"A Connector, A Connector Assembly And A Method Of Assembling A Connector"

Abstract

An object of the present invention is to provide a connector in which the other connector housing can be commonly used for one unitary-type connector housing and one divided-type connector housing.A female housing 10 is divided into a first and a second blocks 15A, 15B, which can be united by fitting a rib 27 of the second block 15B into a dovetail groove 19 of the first block 15A. With the two blocks 15A, 15B united, tab-shaped terminal insertion passages 29 are formed up to the dovetail groove 19 and the rib 27 in the female housing 10. This enables male tabs 13 to enter the tab-shaped terminal insertion passages 29 and prevents them from interfering with the female housing 10, wherefore a male housing 11 can be commonly used for a unitary-type female housing 40 and the divided-type female housing 10.

Information

Applicants

Inventors

Specification

A Connector, A Connector Assembly And A Method Of Assembling A Connector
The present invention relates to a connector, a connector assembly and to a method of assembling a connector.
A known connector is provided with a pair of connector housings connectable with each other, wherein a plurality of cavities for accommodating terminal fittings are formed in one connector housing and tab-shaped terminals to be connected with the terminal fittings are arranged in the other connector housing. If the two connector housings of this connector are connected, the tab-shaped terminals enter the cavities to come into contact with the terminal fittings, whereby the two connector housings are electrically connected. A so-called unitary-type connector in which one connector housing is formed by a single member is known as a connector of this type.
In an automotive wiring harness, a plurality of different circuits are connected to one circuit via a connector in some cases. In such a case, a plurality of circuits are wired in one connector housing. Then, a wiring operation is cumbersome because wires of different lengths to be laid along different paths have to be connected with one connector housing. Accordingly, if one connector housing is divided into a plurality of blocks, i.e. made into a so-called divided-type connector, wire laying operations can be performed independently for the respective circuits in the respective blocks. This can facilitate the wire
laying operations. A connector of this type is e.g. known from Japanese Unexamined Patent Publication No. H10-106670.
In this connector, dovetail grooves or ribs engageable with the dovetail grooves are formed in or on the outer surfaces of each block constituting one connector housing, and two connector housings are connected after the respective blocks are united by the engagement of the dovetail grooves and the ribs. This can prevent the respective blocks from separating from each other during the connecting operation of the two connector housings. Thus, an operator needs not perform the connecting operation while pressing the respective blocks so as not to separate, wherefore operation efficiency can be improved.
However, according to the above construction, cavities into which terminal fittings are insertable cannot be formed in an area of one connector housing where the dovetail grooves or the ribs are formed. If an attempt is made to connect the two connector housings in such a case, the leading ends of the tab-shaped terminals arranged at positions corresponding to the areas where the dovetail grooves or the ribs are formed interfere with a connecting surface of the one connector housing. Thus, the tab-shaped terminals cannot be arranged at positions of the other connector housing corresponding to the area where the dovetail grooves or the ribs are formed. Then, the other connector housing can be only exclusively used for the one connector housing of the divided type and cannot be used for one connector housing of the unitary type.
The present invention was developed in view of the above situation, and an object thereof is to provide a connector, connector assembly and
assembling method in which the other connector housing can be commonly used for one unitary-type connector housing and one divided-type connector housing.
This object is solved according to the invention by the features of the independent claims. Preferred embodiments of the invention are subject of the dependent claims.
According to the invention, there is provided a connector, comprising a connector housing connectable with a mating connector housing along a connecting direction, the connector housing being formed with one or more cavities for at least partly accommodating one or more respective terminal fittings and being divided into a plurality of blocks with respect to a direction intersecting with the connecting direction, the respective blocks being made unitable by forming at least one engaging portion and/or at least one interacting portion on one block engageable with at least one engaging portion and/or at least one interacting portion provided on the other respective block, and the connector housing being connected with the mating connector housing with the respective blocks united or integrally connected, wherein:
at least one tab-shaped terminal insertion passage extending backward substantially in the connecting direction from a connecting surface of the connector housing with the mating connector housing is formed up to the engaging portion and/or the interacting portion in the connector housing along boundary surfaces of the respective blocks with the respective blocks united or integrally connected, and
the leading end of a tab-shaped terminal of the mating connector housing does not interfere with the back wall of the tab-shaped terminal
insertion passage with the connector housing properly connected with the mating connector housing.
Accordingly, when the divided-type connector housing and the mating connector housing are connected, those one or more of the tab-shaped terminals arranged at positions substantially corresponding to the cavities can at least partly enter the cavity/cavities to be connected with the one or more respective terminal fittings. On the other hand, the terminal fitting arranged at a position substantially corresponding to the engaging portion and/or the interacting portion enters the tab-shaped terminal insertion passage formed to extend substantially up to the engaging portion or the interacting portion. Since the back wall of the tab-shaped terminal insertion passage and the leading end of this tab-shaped terminal do not interfere with each other when the two connector housings are properly connected, the two connector housings are properly connectable even if the one connector housing is of the divided type.
As described above, the mating connector housing can be commonly used regardless of whether the connector housing is of the unitary type or of the divided type according to the above, since the tab-shaped terminal can be provided in the mating connector housing at the position substantially corresponding to the engaging portion and/or the interacting portion even if the connector housing is of the divided type.
According to a preferred embodiment of the invention, the engaging portion comprises a dovetail groove extending in a direction at an angle different from 0° or 180°, preferably substantially normal to the connecting direction of the connector housing and the interacting portion comprises a rib at least partly fittable into the dovetail groove.
Accordingly, since the dovetail groove is formed to extend in the direction at an angle different from 0° or 180°, preferably substantially normal to the connecting direction of the connector housing, relative displacements of the respective blocks substantially along the connecting direction of the connector housing are prevented with the respective blocks united with each other. Thus, even if the other connector housing comes into contact with the connector housing from front substantially along the connecting direction, displacements of the respective blocks substantially along the connecting direction of the connector housing can be prevented.
Preferably, out of the blocks unitable with each other, at least one dovetail-groove side tab-shaped terminal insertion passage is so formed in at least one block as to substantially communicate with the respective dovetail groove and at least one rib side tab-shaped terminal insertion passage is formed in the other block.
Further preferably, the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage communicate with each other to form at least part of the tab-shaped terminal insertion passage by uniting the respective blocks.
Still further preferably, the respective blocks are formed with one or more positioning portions for substantially aligning the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage while being united or integrally connected.
If the respective blocks are united while being displaced from each other, the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage are not aligned, with the result that a
part of the inner wall of the tab-shaped terminal insertion passage may project inward. If an attempt is made to connect the connector housing with the mating connector housing in such a case, the tab-shaped terminal may interfere with the inward projecting part of the inner wall of the tab-shaped terminal insertion passage.
According to the above, since the respective blocks are formed with the one or more positioning portions, the at least one dovetail-groove side tab-shaped terminal insertion passage and the at least one rib side tab-shaped terminal insertion passage can be substantially aligned when the respective blocks are united or integrally connected. Therefore, the interference of the tab-shaped terminal with the inner wall of the tab-shaped terminal insertion passage can be prevented.
Further preferably, the respective blocks can be united or integrally connected substantially along a mating direction by sliding one block relative to the other block to at least partly fit the rib(s) into the dovetail groove(s).
Most preferably, one of the engaging portion and the interacting portion comprises a locking claw and the other of the engaging portion and the interacting portion comprises a receiving portion resiliency engageable with the locking claw.
According to the invention, there is further provided a connector assembly, comprising a connector according to the invention or a preferred embodiment thereof and a mating connector, the connector comprising one or more respective terminal fittings, and the mating connector housing comprises a plurality of tab-shaped terminals to be connected with the terminal fittings.
According to a preferred embodiment of the invention, there is provided a connector assembly, comprising a pair of connector housings connectable with each other, one connector housing being formed with a plurality of cavities for accommodating terminal fittings, a plurality of tab-shaped terminals to be connected with the terminal fittings being arranged in the other connector housing, the one connector housing being divided into a plurality of blocks with respect to a direction intersecting with a connecting direction thereof, the respective blocks being made unitable by forming an engaging portion or an interacting portion engageable with each other on outer surfaces thereof, and the two connector housings being connected with the respective blocks united, wherein:
a tab-shaped terminal insertion passage extending backward in the connecting direction from a connecting surface of the one connector housing with the other connector housing is formed up to the engaging portion or the interacting portion in the one connector housing along boundary surfaces of the respective blocks with the respective blocks united, and
the leading end of the tab-shaped terminal does not interfere with the back wall of the tab-shaped terminal insertion passage with the two connector housings properly connected.
Accordingly, when the divided-type one connector housing and the other connector housing are connected, those of the tab-shaped terminals arranged at positions corresponding to the cavities enter the cavities to be connected with the terminal fittings. On the other hand, the terminal fitting arranged at a position corresponding to the engaging portion or the interacting portion enters the tab-shaped terminal insertion passage formed to extend up to the engaging
portion or the interacting portion. Since the back wall of the tab-shaped terminal insertion passage and the leading end of this tab-shaped terminal do not interfere with each other when the two connector housings are properly connected, the two connector housings are properly connectable even if the one connector housing is of the divided type.
As described above, the other connector housing can be commonly used regardless of whether the one connector housing is of the unitary type or of the divided type according to the above, since the tab-shaped terminal can be provided in the other connector housing at the position corresponding to the engaging portion or the interacting portion even if the one connector housing is of the divided type.
Preferably, the engaging portion is a dovetail groove extending in a direction substantially normal to the connecting direction of the one connector housing and the interacting portion is a rib fittable into the dovetail groove.
Accordingly, since the dovetail groove is formed to extend in the direction substantially normal to the connecting direction of the one connector housing, relative displacements of the respective blocks along the connecting direction of the one connector housing are prevented with the respective blocks united with each other. Thus, even if the other connector housing comes into contact with the one connector housing from front along the connecting direction, displacements of the respective blocks along the connecting direction of the one connector housing can be prevented.
Most preferably, out of the blocks unitable with each other, a dovetail-groove side tab-shaped terminal insertion passage is so formed in one block as
to communicate with the dovetail groove and a rib side tab-shaped terminal insertion passage is formed in the other block,
the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage communicate with each other to form the tab-shaped terminal insertion passage by uniting the respective blocks, and
the respective blocks are formed with positioning portions for aligning the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage while being united.
If the respective blocks are united while being displaced from each other, the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage are not aligned, with the result that a part of the inner wall of the tab-shaped terminal insertion passage may project inward. If an attempt is made to connect the two connector housings in such a case, the tab-shaped terminal may interfere with the inward projecting part of the inner wall of the tab-shaped terminal insertion passage.
According to the above, since the respective blocks are formed with the positioning portions, the dovetail-groove side tab-shaped terminal insertion passage and the rib side tab-shaped terminal insertion passage can be aligned when the respective blocks are united. Therefore, the interference of the tab-shaped terminal with the inner wall of the tab-shaped terminal insertion passage can be prevented.
According to the invention, there is further provided a method of assembling a connector, in particular according to the invention or a preferred embodiment thereof, comprising the following steps:
providing a connector housing connectable with a mating connector housing along a connecting direction, the connector housing being formed with one or more cavities for at least partly accommodating one or more respective terminal fittings and being divided into a plurality of blocks with respect to a direction intersecting with the connecting direction,
uniting the respective blocks by engaging at least one engaging portion and/or at least one interacting portion on one block with at least one engaging portion and/or at least one interacting portion provided on the other respective block, and the connector housing being connected with the mating connector housing with the respective blocks united, wherein:
at least one tab-shaped terminal insertion passage extending backward substantially in the connecting direction from a connecting surface of the connector housing with the mating connector housing is formed up to the engaging portion and/or the interacting portion in the connector housing along boundary surfaces of the respective blocks with the respective blocks united, and
the leading end of a tab-shaped terminal of the mating connector housing does not interfere with the back wall of the tab-shaped terminal insertion passage with the connector housing properly connected with the mating connector housing.
These and other objects, features and advantages of the present invention will become more apparent upon reading of the following detailed description of preferred embodiments and accompanying drawings. It should be understood that even though embodiments are separately described, single features thereof may be combined to additional embodiments.
FIG. 1 is a front view showing a state before a first and a second blocks constituting a female housing of a connector according to one embodiment of the invention are united,
FIG. 2 is a side view of the first block,
FIG. 3 is a side view of the second block,
FIG. 4 is a partial enlarged perspective view of the first and second blocks,
FIG. 5 is a plan view showing a state before the first and second blocks are united,
FIG. 6 is a front view showing a state where the first and second blocks are united,
FIG. 7 is a plan view showing the state where the first and second blocks are united,
FIG. 8 is a section along A-A of FIG. 7,
FIG. 9 is a plan view showing a state where a retainer is mounted in the female housing,
FIG. 10 is a partial enlarged section showing a state before a male housing and the female housing are connected,
FIG. 11 is a partial enlarged section showing a state after the male housing and the female housing are connected, and
FIG. 12 is a plan view of a unitary-type female housing.
One preferred embodiment of the present invention is described with reference to FIGS. 1 to 12. A connector according to this embodiment is provided with a male housing 10 (preferably corresponding to one connector
housing) and a male housing (preferably corresponding to the other connector housing) connectable with each other along a connecting direction CD.
Although not shown in detail, the male housing 11 is made e.g. of synthetic resin and at least one busbar member 12 preferably formed by press-forming or cutting a conductive (preferably metal) sheet into a specified (predetermined or predeterminable) shape and bending, embossing and/or folding the resulting the conductive (metal) sheet is arranged therein (see FIG. 10). This busbar member 12 is formed with one or more, preferably with a plurality of male tabs 13 (corresponding to one or more tab-shaped terminals) projecting substantially forward with respect to the connecting direction CD of the male housing 11, and these male tabs 13 preferably are provided for shorting two or more female terminal fittings 14 by being connected with the female terminal fittings 14 to be described later.
The female housing 10 is made e.g. of synthetic resin and preferably is of the so-called divided type divided into a plurality of blocks 15 (two in this embodiment) with respect to width direction WD (transverse direction in FIG. 1 and direction intersecting with a connecting direction CD of the female housing 10) which can be united together or integrally connected with each other. The right block 15 in FIG. 1 serves as a first block 15A and the left block 15 serves a second block 15B. With both blocks 15A, 15B united or integrally connected, the left surface of the first block 15A and the right surface of the second block 15B preferably serve as or form boundary surfaces between the two blocks 15A, 15B. One or more, preferably a plurality of cavities 16 are formed to penetrate the respective blocks 15A, 15B substantially in forward and backward directions (direction penetrating the plane of FIG. 1 and/or substantially along
the connecting direction CD of the female housing 10) while preferably being arranged substantially side by side along width direction WD and/or vertical direction (vertical direction in FIG. 1) at one or more stages (at two stages in the shown example), and the one or more female terminal fittings 14 are to be at least partly inserted into these cavities 16. A locking portion 31 for locking the female terminal fitting 14 resiliently deformably projects from or at an inner wall of each cavity 16. A retainer insertion hole having an open upper side and such a depth as to substantially communicate with (at least part of) the respective cavities 16 preferably is formed at (preferably a rear side of) the lateral (upper) surface of each block 15A, 15B with respect to the connecting direction CD of the female housing 10, and a retainer 18 preferably is at least partly inserted into this retainer insertion hole 17 to (preferably doubly) lock the female terminal fittings 14 preferably in cooperation with the locking portions 31 (see FIGS. 5 and 9).
At least one undercut or dovetail groove 19 (corresponding to a preferred engaging portion) preferably retracted rightward in FIG. 1 and/or extending substantially in a mating direction MD or in vertical direction (direction at an angle different from 0° or 180°, preferably substantially normal to the connecting direction CD of the female housing 10) is formed at (preferably a front side of) the lateral (left) surface of the first block 15A. In the lateral (left) surface (boundary surface to the second block 15B) of the first block 15A are formed one or more, preferably two undercut or dovetail-groove side tab-shaped terminal insertion passages 20 extending substantially backward from the front surface of the first block 15A substantially along the connecting direction CD of the female housing 10 and/or arranged one above the other.
These dovetail-groove side tab-shaped terminal insertion passages 20 extend to substantially communicate with the dovetail groove 19. The male tabs 13 are at least partly insertable into the dovetail-groove side tab-shaped terminal insertion passages 20, and one or more tapered surfaces 21A for guiding the male tabs 13 are formed at or near the front opening(s) of the dovetail-groove side tab-shaped terminal insertion passage(s) 20. Out of wall portions forming the dovetail groove 19, a rear wall portion 22 located substantially behind preferably is cut off from the bottom end of the first block 15A to a specified (predetermined or predeterminable) height position, and comes substantially into contact with a contact wall portion 23 of the second block 15B to be described later.
At least one engaging-projection receiving portion 25 (corresponding to a preferred positioning portion) engageable with at least one engaging projection 24 (corresponding to a preferred positioning portion) to be described later preferably is so formed at a position of the lateral (left) surface of the first block 15A near the rear end and the bottom end as to be retracted rightward in FIG. 1. At least one tapered surface 26A inclined outward toward the top is formed in the lateral (left) surface of the first block 15A substantially below the engaging-projection receiving portion 25 from the bottom edge, so that the engaging projection 24 can easily move onto.
At least one rib 27 (corresponding to a preferred interacting portion) projecting laterally or towards the neighboring block 15A (rightward in FIG. 1) and engageable with the dovetail groove 19 is formed at a position of the front side of the lateral (right) surface of the second block 15B substantially corresponding to the aforementioned dovetail groove 19 (see FIG. 4). One or
more rib side tab-shaped terminal insertion passages 28 extending substantially in forward and backward directions (or substantially along the connecting direction CD) are formed preferably one substantially above the other in the rib 27, and the respective one or more male tabs 13 are at least partly insertable into these rib side tab-shaped terminal insertion passages 28. One or more back walls 30 of the rib side tab-shaped terminal insertion passages 28 preferably are so set as not to interfere with the leading ends of the male tabs 13 when the two housings 10, 11 are properly connected with the two blocks 15A, 15B united or integrally connected at substantially proper positions. The contact wall portion 23 projecting substantially backward is formed at the bottom end of the rib 27, and a downward displacement (or displacement substantially along the mating direction MD) of the first block 15A is prevented by the contact of the bottom end surface of the aforementioned rear wall portion 22 of the first block 15A with the upper surface of this contact wall portion 23 from above. One or more tapered surfaces 21B for substantially guiding the male tabs 13 are formed at positions located at preferably the front edge of the lateral (right) surface (boundary surface to the first block 15A) of the second block 15B and/or substantially corresponding to the dovetail-groove side tab-shaped terminal insertion passages 20 of the first block 15A.
The engaging projection 24 projecting laterally (rightward in FIG. 1) is formed at a position located near the rear end of the right surface of the second block 15B and/or substantially corresponding to the engaging-projection receiving portion 25 of the first block 15A. At least one tapered surface 26B preferably is formed on or near the upper surface of the engaging projection 24, so that the engaging projection 24 can easily move over the wall surface below
the engaging-projection receiving portion 25. The bottom end surface of the engaging projection 24 preferably is formed to be perpendicular to the right surface of the second block 15B, and an upward displacement (or displacement substantially along the mating direction MD) of the first block 15A is prevented by the contact of the bottom end surface of this engaging projection 24 with the bottom end surface of the engaging-projection receiving portion 25 from above. The first block 15A and the second block 15B can be united substantially along the mating direction MD by sliding the first block 15A relative to the second block 15B from above to at least partly fit the rib(s) 27 into the dovetail groove(s) 19. With the first and second blocks 15A, 15B united or integrally connected at the substantially proper positions, the bottom surface of the rear wall portion 22 of the first block 15A is substantially in contact with the upper surface of the contact wall portion 23 of the second block 15B from above to prevent a downward displacement of the first block 15A, and the bottom end surface of the engaging projection 24 of the second block 15B is in contact with the bottom surface of the engaging-projection receiving portion 25 of the first block 15A from above to prevent an upward displacement of the first block 15A. In this way, the first and second blocks 15A, 15B are positioned with respect to vertical direction (or substantially along the mating direction MD). Further, displacements of the first and second blocks 15A, 15B along forward and backward directions (or connecting direction CD) and/or width direction WD are prevented by the engagement of the rib(s) 27 of the second block 15B with the intersecting (substantially vertically extending) dovetail groove(s) 19 formed in the first block 15A. In other words, the mating direction MD is arranged at an angle different from 0° or 180°, preferably substantially normal to the forward
and backward directions (or connecting direction CD) and/or the width direction WD.
With the first and second blocks 15A, 15B united at the substantially proper positions to form the female housing 10, the dovetail-groove side tab-shaped terminal insertion passage(s) 20 formed in the first block 15A and the rib side tab-shaped terminal insertion passage(s) 28 formed in the second block 15B communicate with each other, whereby one or more tab-shaped terminal insertion passages 29 extending substantially backward from the connecting surface of the female housing 10 with the male housing 11 substantially along the boundary surfaces of the first and second blocks 15A, 15B are formed substantially up to the dovetail groove 19 and/or the rib 27. The dovetail-groove side tab-shaped terminal insertion passage(s) 20 and the rib side tab-shaped terminal insertion passage(s) 28 preferably is/are substantially aligned by the engagement of the aforementioned engaging projection 24 and engaging-projection receiving portion 25. As shown in FIG. 6, the cavities 16 formed in the first and second blocks 15A, 15B are arrayed in one or more rows substantially along width direction WD with the first and second blocks 15A, 15B united at the substantially proper positions. In this state, the tab-shaped terminal insertion passages 29 substantially are vertically aligned with each other and/or aligned with the row(s) of the cavities at the one or more , preferably the two (upper and lower) stages along width direction WD.
The male housing 11 is connectable with the preferably divided-type female housing 10 formed by uniting the first and second blocks 15A, 15B and also connectable with a unitary-type female housing 40. FIG. 12 shows the unitary-type female housing 40 for comparison with the divided-type female
housing 10 according to this embodiment. The unitary-type female housing 40 is made e.g. of synthetic resin, and one or more, preferably a plurality of cavities 16 for at least partly accommodating the one or more respective female terminal fittings 14 are formed to penetrate the female housing 40 substantially in forward and backward directions while preferably being arranged substantially side by side along width direction WD and/or vertical direction at one or more stages (at two stages in the shown example).
With the male housing 11 substantially properly connected with the unitary-type female housing 40, the male tabs 13 are at least partly inserted in (preferably all) the cavities 16.
On the other hand, when the male housing 11 and the divided-type female housing 10 are connected, out of the male tabs 13, those arranged at positions substantially corresponding to the cavities 16 are at least partly inserted into the respective cavities 16 to come into contact with the female terminal fittings 14 for electrical connection. On the other hand, out of the tabs 13, those arranged at positions substantially corresponding to the tab-shaped terminal insertion passages 29 are at least partly inserted into the tab-shaped terminal insertion passages 29. The back walls 30 of the tab-shaped terminal insertion passages 29 preferably are so formed as not to interfere with the leading ends of the male tabs 13 with the two housings 10, 20 properly connected. In the divided-type female housing 10, the tab-shaped terminal insertion passages 29 are formed at the positions substantially corresponding to specified (predetermined or predeterminable) cavities (e.g. the seventh cavity at the upper stage from left in FIG. 1 and the eighth cavity at the lower stage from left in FIG. 1) in the unitary-type female housing 40.
Next, functions and effects of this embodiment are described. First, an assembling operation of the female housing 10 is described. In FIG. 1, the first block 15A is placed slantedly or inclined with respect to (e.g. obliquely upward to right of) the second block 15B and is slid downward to bring the lateral (left) surface of the first block 15A and the corresponding lateral (right) surface of the second block 15B substantially into sliding contact. At this time, the rib 27 of the second block 15B is at least partly fitted into the dovetail groove 19 of the first block 15A. If the first block 15A is further slid substantially along the mating direction MD (downward), it is displaced substantially along the mating direction MD (downward) by being guided by the dovetail groove 19 and the engaging projection 24 of the second block 15B comes substantially into contact with the bottom edge of the right surface of the first block 15A from below. Then, the engaging projection 24 and the tapered surface 26B of the second block 15B come substantially into sliding contact with the tapered surface 26A formed at the bottom edge of the left surface of the first block 15A, whereby the engaging projection 24 moves onto the left surface of the first block 15A. When the first block 15A is pushed further substantially along the mating direction MD (downward), the engaging projection 24 is at least partly fitted into the engaging-projection receiving portion 25. Then, the bottom end surface of the engaging projection 24 comes substantially into contact with the bottom surface of the engaging-projection receiving portion 25 from above, thereby preventing an upward displacement of the first block 15A. Further, the bottom surface of the rear wall portion 22 of the first block 15A comes substantially into contact with the upper surface of the contact wall portion 23 of the second block 15B from above, thereby preventing a downward displacement of the first block 15A.
Further, displacements of the first and second blocks 15A, 15B along forward and backward directions (or connecting direction CD) and/or width direction WD are prevented by fitting the rib 27 into the dovetail groove 19 extending substantially along the mating direction MD (or vertical direction). In this way, the first and second blocks 15A, 15B are positioned and assembled to form the divided-type female housing 10.
Since the cavities 16 for the at least partial insertion of the female terminal fittings 14 should not be formed in the area of the female housing 10 according to this embodiment where the dovetail groove 19 and the rib 27 are formed, the male tabs 13 corresponding to the area where the dovetail groove 19 and the rib 27 are formed may strike against the front surface of the female housing 10, making it impossible to connect the two housings 10, 11. For the connection of the two housings 10, 11, the male tabs 13 may not be formed at positions corresponding to the area where the dovetail groove 19 and the rib 27 are formed. However, according to this construction, the male housing 11 is exclusively used for the divided-type female housing 10 and preferably cannot be commonly used for the unitary-type female housing 40.
In view of the above problem, in the female housing 10 according to this embodiment, the one or more tab-shaped terminal insertion passages 29 preferably are so formed in the boundary surfaces of the first and second blocks 15A, 15B as to extend substantially backward up to the dovetail groove 19 and the rib 27 from the connecting surface with the male housing 11. Thus, if the male housing 11 is connected with the female housing 10 from front, out of the male tabs 13, those arranged at the positions substantially corresponding to the cavities 16 enter the cavities 16 to be connected with the female terminal
fittings 14, whereas those arranged at the positions corresponding to the dovetail groove 19 and the rib 27 enter the tab-shaped terminal insertion passages 29 so as not to interfere with the female housing 10. As a result, the male tabs 13 can be formed at the positions corresponding to the area of the divided-type female housing 10 where the dovetail groove 19 and the rib 27 are formed, wherefore the male housing 11 can be commonly used for both the unitary-type female housing 40 and the divided-type female housing 10 avoiding particularly a risk of damaging the male tabs 13. With the divided-type female housing 10 and the male housing 11 substantially properly connected, the male tabs 13 are guided by the tapered surfaces 21 A, 21B formed at the opening edges of the tab-shaped terminal insertion passages 29.
If the respective blocks 15A, 15B are united while being displaced relative to each other, the dovetail-groove side tab-shaped terminal insertion passages 20 and the rib side tab-shaped terminal insertion passages 28 preferably are not aligned, with the result that parts of the inner walls of the tab-shaped terminal insertion passages 29 may project inward. If an attempt is made to connect the two housings 10, 11 in such a case, the male tabs 13 may interfere with the inward projecting parts of the inner walls of the tab-shaped terminal insertion passages 29.
In view of the above, the engaging-projection receiving portion 25 is formed in the first block 15A and the engaging projection 24 is formed on the second block 15B in this embodiment. Thus, the dovetail-groove side tab-shaped terminal insertion passages 20 and the rib side tab-shaped terminal insertion passages 28 can be substantially aligned when the respective blocks 15A, 15B are united or integrally connected. This can prevent the interference
of the male tabs 13 with the inner walls of the tab-shaped terminal insertion passages 29.
Further, the respective blocks 15A, 15B preferably are not displaced relative to each other along the connecting direction CD of the female housing 10 while being united with each other since the dovetail groove 19 is formed to extend substantially in the mating direction MD at an angle different from 0° or 180°, preferably substantially normal to the connecting direction CD of the female housing 10. Thus, even if the male housing 11 comes into contact with the female housing 10 from front with respect to the connecting direction CD upon connecting the two housings 10, 11, displacements of the respective blocks 15A, 15B along the connecting direction CD of the female housing 10 can be prevented.
Accordingly, to provide a connector in which the other connector housing can be commonly used for one unitary-type connector housing and one divided-type connector housing, a female housing 10 is divided into at least a first block 15A and a second block 15B, which can be united or integrally connected by at least partly fitting at least one rib 27 of the second block 15B into at least one respective dovetail or undercut groove 19 of the first block 15A. With the two blocks 15A, 15B united or integrally connected, one or more tab-shaped terminal insertion passages 29 are formed substantially up to the dovetail groove 19 and the rib 27 in the female housing 10. This enables one or more male tabs 13 to enter the tab-shaped terminal insertion passages 29 and prevents them from interfering with the female housing 10, wherefore a male housing 11 can be commonly used for a unitary-type female housing 40 and the divided-type female housing 10.

The present invention is not limited to the above described and illustrated embodiment. For example, the following embodiments are also embraced by the technical scope of the present invention as defined by the claims.
(1) Although the respective blocks 15A, 15B are united by being slid
along the mating direction MD or substantially vertically relative to each other in
the foregoing embodiment, the present invention is not limited thereto. The
dovetail groove 19 and the rib 27 may be formed to extend in width direction
WD and the respective blocks 15A, 15B may be united or integrally connected
by being slid relative to each other in width direction WD. The respective blocks
15A, 15B can be united by being slid in any arbitrary mating direction MD at an
angle different from 0° or 180°, preferably substantially normal to the
connecting direction CD of the male and female housings 11, 10.
If the respective blocks 15A, 15B are constructed to include an engaging portion or an interacting portion so as not to displace in forward and backward directions, the dovetail groove 19 and the rib 27 may be formed to extend in forward and backward directions and the respective blocks 15A, 15B may be united by being slid in forward and backward directions. Alternatively, each of the blocks 15A and 15B may be formed with respective one or more dovetail grooves 19 and one or more ribs 27 being engageable with each other, respectively.
(2) Although the engaging portion preferably comprises the dovetail
groove 19 and the interacting portion is the rib 27 in the foregoing embodiment,
the present invention is not limited thereto and the engaging portion may be or
comprise a locking claw and the interacting portion may be a receiving portion resiliency engageable with the locking claw.
(3) Although the busbar member 12 including the male tabs 13 is
arranged in the male housing 11 in the foregoing embodiment, the present
invention is not limited thereto and male terminal fittings including the male tabs
13 maybe arranged.
(4) Although the female housing 10 is divided into two blocks 15 in
the foregoing embodiment, the present invention is not limited thereto and the
female housing 10 may be divided into three or more blocks 15.
If the female housing 10 is divided into three or more blocks 15, the following constructions may be adopted. Each of blocks 15 to be located between other blocks 15 in an assembled state preferably has at least one dovetail groove 19 formed in one boundary surface while having at lest one rib 27 formed on the other boundary surface, and these blocks 15 are arranged substantially side by side between two end blocks to be united or integrally connected. Alternatively, each of such blocks 15 has at least one dovetail groove 19 formed in both boundary surfaces thereof or has at least one rib 27 formed on both boundary surfaces thereof, and the blocks 15 having the dovetail grooves 19 in both boundary surfaces and those having the ribs 27 on both boundary surfaces are alternately arranged between two end blocks to be united.
LIST OF REFERENCE NUMERALS
10 ... female housing (one connector housing)
11 ... male housing (other connector housing)
13 ... male tab (tab-shaped terminal)
15A(15) ... first block
156(15) ... second block
14 ... female terminal fitting
16 ... cavity
19 ... dovetail groove (engaging portion)
20 ... dovetail-groove side tab-shaped terminal insertion passage

24 ... engaging projection (positioning portion)
25 ... engaging-projection receiving portion (positioning portion)

27 ... rib (interacting portion)
28 ... rib side tab-shaped terminal insertion passage
29 ... tab-shaped terminal insertion passage

We Claim:
1. A connector, comprising a connector housing (10) connectable with a mating
connector housing (11) along a connecting direction (CD), the connector housing (10) being
formed with one or more cavities (16) for at least partly accommodating one or more respective
terminal fillings (14) and being divided into a plurality of blocks (15A, 15B) with respect to a
direction intersecting with the connecting direction (CD), the respective blocks (15A, 15B) being
made unitable by forming at least one engaging portion (19) and/or at least one interacting
portion (27) on one block (15A) engageable with at least one engaging portion (19) and/or at
least one interacting portion (27) provided on the other respective block (15B), and the connector
housing (10) being connected with the mating connector housing (11) with the respective blocks
(15A, 15B) united, wherein:
at least one tab-shaped terminal insertion passage (29) extending backward substantially in the connecting direction (CD) from a connecting surface of the connector housing (10) with the mating connector housing (11) is formed up to the engaging portion (19) and/or the interacting portion (27) in the connector housing (11) along boundary surfaces of the respective blocks (15A, 15B) with the respective blocks (15A, 15B) united, and
the leading end of a tab-shaped terminal (13) of the mating connector housing (11) does not interfere with the back wall of the tab-shaped terminal insertion pas20 sage (29) with the connector housing (10) properly connected with the mating connector housing (11),
characterized in that said tab-shaped terminal insertion passage (29) is/are positioned such that a tab-shaped terminal (13) of the mating connector housing (11) arranged at a position corresponding to the engaging portion (19) and/or the interacting portion (27) can enter the tab-shaped terminal insertion passage (29).
2. A connector as claimed in claim 1, wherein the engaging portion (19) comprises a
dovetail groove (19) extending in a direction (MD) at an angle different from 00 or 180°,
preferably substantially normal to the connecting direction (CD) of the connector housing (10)
and the interacting portion (27) comprises a rib (27) at least partly fittable into the dovetail
groove (19).

3. A connector as claimed in claim 2, wherein out of the blocks (15A, 15B) linkable with each other, at least one dovetail-groove side tab-shaped terminal insertion passage (20) is so formed in at least one block (15A) as to substantially communicate with the respective dovetail groove (19) and at least one rib side tab-shaped terminal insertion passage (28) is formed in the other block (15B).
4. A connector as claimed in claim 3, wherein the dovetail-groove side tab-shaped terminal insertion passage (20) and the rib side tab-shaped terminal insertion passage (28) communicate with each other to form at least part of the tab-shaped terminal insertion passage (29) by uniting the respective blocks (15A, 15B).
5. A connector as claimed in claim 3 or 4, wherein the respective blocks (15A, 15B) are formed with one or more positioning portions (24; 25) for substantially aligning the dovetail-groove side tab-shaped terminal insertion passage (20) and the rib side tab-shaped terminal insertion passage (28) while being united.
6. A connector as claimed in one or more of the preceding claims 2 to 5, wherein the respective blocks (15A, 15B) can be united substantially along a mating direction (MD) by sliding one block (15A) relative to the other block (15B) to at least partly fit the rib(s) (27) into the dovetail groove(s) (19).
7. A connector as claimed in one or more of the preceding claims, wherein one of the engaging portion and the interacting portion comprises a locking claw and the other of the engaging portion and the interacting portion comprises a receiving portion resiliency engageable with the locking claw.
8. A connector assembly, comprising a connector according to one or more of the preceding claims and a mating connector, the connector comprising one or more respective terminal fittings (14), and the mating connector housing comprises a plurality of tab-shaped terminals (13) to be connected with the terminal fittings (14).

9. A method of assembling a connector, comprising the following steps:
providing a connector housing (10) connectable with a mating connector housing (11) along a connecting direction (CD), the connector housing (10) being formed with one or more cavities (16) for at least partly accommodating one or more respective terminal fittings (14) and being divided into a plurality of blocks (15A, 15B) with respect to a direction intersecting with the connecting direction (CD),
uniting the respective blocks (15A, 15B) by engaging at least one engaging portion (19) and/or at least one interacting portion (27) on one block (15 A) with at least one engaging portion (19) and/or at least one interacting portion (27) provided on the other respective block (15B), and the connector housing (10) being connected with the mating connector housing (ii) with the respective blocks (15A, 15B) united, wherein:
at least one tab-shaped terminal insertion passage (29) extending backward substantially in the connecting direction (CD) from a connecting surface of the connector housing (10) with the mating connector housing (11) is formed up to the engaging portion (19) and/or the interacting portion (27) in the connector housing (11) along boundary surfaces of the respective blocks (15A, 15B) with the respective blocks (15A, 15B) united, and
the leading end of a tab-shaped terminal (13) of the mating connector housing (11) does not interfere with the back wall of the tab-shaped terminal insertion passage (29) with the connector housing (10) properly connected with the mating connector housing (11), characterized by
positioning said tab-shaped terminal insertion passage (29) such that s.a tab- shaped terminal (13) of the mating connector housing (11) arranged at a position corresponding to the engaging portion (19) and/or the interacting portion (27) can enter the tab-shaped terminal insertion passage (29).

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