Claims:We claim:
1. An abutment assembly (100) with snap clips in a transmission system, the abutment assembly (100) comprising:
a. an abutment housing (101) for securing one or more cable to the transmission system, wherein the abutment housing (101) comprises:
i. at least one pair of snap clips (101a, 101b) for fastening the abutment assembly (100) in the transmission system, wherein the snap clips (101a, 101b) are provided on the exterior periphery of the abutment housing (101);
ii. one or more protrusions (101c) and one or more anti-rotation locking walls (101d) mounted on the exterior of the abutment housing (101) for preventing the axial movement and the rotational movement of the abutment housing (101) in working condition;
iii. at least one or no abutment ribs (101e) established in the abutment housing (101) for withstanding the force exerted in the abutment assembly (100) in working condition;
iv. a front isolator (101f) and a rear isolator (101g) locked in the abutment housing (101) through a lock cap (101h), wherein the front isolator (101f) and the rear isolator (101g) are configured to attenuate the vibration experienced in working condition;
v. a guide pipe (101i) coupled to the abutment housing (101) and the front isolator (101f), wherein the guide pipe (101i) assists the load experienced in the cable in linear and angular movements;
b. a bracket (102) disposed in the transmission system, wherein the bracket (102) comprises a slot (102a) to receive the abutment housing (101) by firmly securing the abutment housing (101) within the slot (102a) in the bracket (102).

2. The abutment assembly (100) as claimed in claim 1, wherein the snap clips (101a, 101b) provided on the exterior periphery of the abutment housing (101) are depressed during the insertion of the abutment housing (101) into the bracket (102).

3. The abutment assembly (100) as claimed in claim 1, wherein the snap clips (101a, 101b) protrudes against the slot (102a) in the bracket (102) subsequent to the insertion of the abutment housing (101) in the slot (102a) thereby clasping the abutment housing (101) within the bracket (102).

4. The abutment assembly (100) as claimed in claim 1, wherein the protrusions (101c) prevent the insertion of the abutment housing (101) into the bracket (102) in case the anti-rotation locking wall (101d) is descended in the direction of the slot (102a) surface.

5. The abutment assembly (100) as claimed in claim 1, wherein the protrusions (101c) assists the insertion of the abutment housing (101) in case the anti-rotation locking wall (101d) is positioned in the direction away from the slot (102a) surface.
, Description:PREAMBLE TO THE DESCRIPTION:
[0001] The following specification particularly describes the invention and the manner in which it is to be performed:

DESCRIPTION OF THE INVENTION
Technical field of the invention
[0002] The present invention relates to an abutment assembly used in a transmission system. More particularly, the invention relates to an abutment assembly with snap clips to firmly engage and lock the abutment housing with a bracket provided in a gear shifter transmission system which prevents slipping of the abutment housing while in operation, generates reaction force and reduces vibrations and undesirable noise experienced in working condition.
Background of the invention
[0003] Over the years, automotive industries have emphasized more on the quality of a ride by giving high preference to the passenger comfort inside a vehicle cabin. The passengers may experience discomfort in the ride due to disruptions transmitted from external source such as an engine compartment or environment to the passenger cabin. One such source may be a transmission system which is employed to transform engine torque and speed into suitable vehicle attributes such as speed, acceleration and torque. The transmission is indirectly connected and controlled by the driver’s hand in the passenger cabin through shift cables, select cable and the gear shifter which may transmit disruptions from the transmission system to the passenger cabin.
[0004] The shift cables run through abutments that are attached to the gearshift housing by the abutment brackets in order to position the specific stroke lengths, angles and a reaction force that are required to engage a gear. The abutments are attached to the gear shift housing to withstand harsh condition such as excessive loading and hostile environment.
[0005] However, the abutment mechanisms in the prior arts suffer from drawbacks such as rotation or slipping of the abutment from the bracket that causes vibration and noise during gear shifting and requires an additional external spring cover for optimized performance. The existing prior arts provide no solution for the above mentioned drawbacks.
[0006] The U.S. Patent Publication No. US9004442B2 discloses an improved abutment system. This invention provides a fixing element for securing a conduit for carrying a cable there through a vehicle body. This fixing element reduces NVH (Noise, vibration, and harshness) transferred down the conduit between a first conduit portion that may guide the cable from the gearbox and the second conduit portion that may guide the cable to the gear shifter. The fixing element disclosed in this invention attaches the conduit to a body of a vehicle.
[0007] The U.S. Patent Publication No. US8245379B2 discloses a motion transmitting cable assembly comprising, a cable having a conduit and a core longitudinally movable within the conduit, a core attachment secured to an end of the core, a conduit abutment fitting secured to an end of the conduit and a guide tube extending from the conduit abutment fitting and slidably receiving the core attachment therein. The guide tube includes a main member secured to the conduit abutment fitting and an extension member longitudinally extending from the main portion such that the core attachment is slidably received in both the main portion and the extension portion. An end of the core attachment is located within the guide tube over an entire stroke of the core attachment.
[0008] Hence, there exists a need for an abutment assembly which firmly secures the abutment housing within the bracket present in the transmission system and also prevents rotation or slipping of the abutment from the transmission system.
Summary of the invention:
[0009] The present invention overcomes the drawbacks in the prior art and provides an abutment assembly in a gear shifter transmission system. The abutment assembly comprises snap clips which secure the abutment assembly inside a bracket and prevent rotation or slipping of the abutment housing while in working condition thereby reducing vibrations and undesirable noise encountered during gear shifting.
[0010] The abutment assembly comprises an abutment housing for securing one or more cable to the transmission system. Further, the abutment housing comprises at least one pair of snap clips provided on the exterior periphery of the abutment housing for fastening the abutment assembly in the transmission system. At least one abutment ribs is established in the abutment housing, wherein the abutment ribs are distributed vertically in the abutment housing to withstand the force experienced in the abutment assembly in working condition.
[0011] Further, the abutment assembly comprises a bracket which is disposed in the transmission system to secure the abutment housing. The bracket comprises a slot to receive the abutment housing by nudging the abutment housing which fits the abutment housing into the slot of the bracket using snap clips. The snap clips provided in the abutment housing are flexible which are depressed during the insertion of the abutment housing into the slot of the bracket. Once the abutment housing is inserted into the slot of the bracket, the snap clips protrude and lock the abutment housing by exerting outward pressure on the bracket. The outward pressure of the snap clips on the bracket prevents slipping of the abutment housing from the bracket while the abutment assembly is in operating condition.
[0012] The design of the abutment assembly with snap clips minimizes the number of parts in accomplishing the aim which makes it simple, easy to install and inexpensive. The present invention improves the ease of assembling abutment assembly in the transmission system and also reduces the maintenance needs. The present invention provides easy shifting of gear lever, since the front isolator and the rear isolator provided in the abutment assembly allows smooth operation by dampening the vibration experienced in the gear shifting cable.

Brief description of the drawings:
[0013] The foregoing and other features of abutments will become more apparent from the following detailed description of abutment when read in conjunction with the accompanying drawings. In the drawings, like reference numerals refer to like elements.
[0014] FIG 1 indicates a perspective view of an abutment assembly according to one embodiment of the invention.
[0015] FIG 2 indicates an orthogonal cut section view of abutment assembly with a front isolator and a rear isolator.
[0016] FIG 3 indicates an orthogonal side view of an abutment assembly according to one embodiment of the invention
[0017] FIG 4 indicates an orthogonal cut section view of an abutment assembly secured into the slot of the bracket via snap clips.
[0018] FIG 5 indicates an orthogonal cut section view of an abutment assembly with anti-rotation locking walls preventing the insertion of abutment housing into the bracket.
Detailed description of the invention:
[0019] Reference will now be made in detail to the description of the present subject matter, one or more examples of which are shown in figures. Each example is provided to explain the subject matter and not a limitation. Various changes and modifications obvious to one skilled in the art to which the invention pertains are deemed to be within the spirit, scope and contemplation of the invention.
[0020] The present invention relates to an abutment assembly comprising an abutment housing with at least one pair of snap clips provided on its exterior periphery. The abutment housing is secured on a bracket which provides a slot to firmly engage the abutment housing into the slot through snap clips. The snap clips are flexible which lock the abutment housing by exerting outward pressure on the bracket thereby preventing slipping of the abutment housing. The abutment housing comprises one or more protrusions and anti-rotation locking walls to prevent axial and rotational movement of the abutment housing inside the slot. A front isolator and rear isolator in the abutment housing reduce vibrations and undesirable noise encountered in working condition.
[0021] FIG 1 indicates a perspective view of an abutment assembly (100) according to one embodiment of the invention. The abutment assembly (100) comprises an abutment housing (101) for securing one or more cable to the transmission system. Further, the abutment housing (101) comprises at least one pair of snap clips (101a, 101b), one or more protrusions (101c), at least one or no abutment ribs (101e), front isolator (101f), rear isolator (101g) and a guide pipe (101i) to form an abutment assembly (100). In a preferred embodiment, the abutment housing (101) is preferably made of a glass filled engineering plastic. The abutment housing (101) comprises at least one pair of snap clips (101a, 101b) for fastening the abutment housing (101) in the transmission system, wherein the snap clips (101a, 101b) are provided on the exterior periphery of the abutment housing (101).
[0022] As indicated in FIG 1, a plurality of protrusions (101c) and anti-rotation locking walls (101d) are mounted on the exterior of the abutment housing (101) to prevent the axial movement and rotational movement of the abutment housing (101) which is experienced in working condition thereby preventing slipping of the abutment housing (101) subsequent to its assembly. Further the abutment housing (101) comprises at least one or no abutment ribs (101e), wherein the abutment ribs (101e) is designed to provide stiffness to the abutment housing (101) for withstanding the force exerted in the abutment assembly (100) in working condition. In one embodiment, the abutment ribs (101e) are distributed vertically in the abutment housing (101) which may withstand force up to 2500N experienced in the abutment assembly (100).
[0023] FIG 2 indicates an orthogonal front view of an abutment assembly (100) which comprises the front isolator (101f) and the rear isolator (101g) locked in the abutment housing (101) through a lock cap (101h), wherein the front isolator (101f) and the rear isolator (101g) are configured to attenuate the vibration experienced during working of the transmission system. Further the abutment housing (101) comprises the guide pipe (101i) which is coupled to the abutment housing (101) and the front isolator (101f), wherein the guide pipe (101i) assists the load experienced in the cable in linear and angular movements. In another embodiment, the guide pipe (101i) may sustain at least 500N load in axial direction experienced in the abutment assembly (100) in working condition. Further, the abutment housing (101) is fixed to an outer shaft (101j) provided in the abutment assembly (100) which is enclosed by the outer shaft mould (101k). The outer shaft (101j) may be connected to the gear box of the transmission system through the cable.
[0024] FIG 3 indicates an orthogonal side view of an abutment assembly (100) according to one embodiment of the invention. The abutment assembly (100) comprises a bracket (102) which is disposed in the transmission system, wherein the bracket (102) comprises a slot (102a) to receive the abutment housing (101) by nudging the abutment housing (101) which firmly secures the abutment housing (101) within the slot (102a) in the bracket (102). Positive stops are provided in the exterior edges of the abutment housing and (101) to entrench the abutment housing (101) inside the slot (102a) in the bracket (102) by pushing positive stops of the abutment against positive stops of the bracket which are provided in the slot (102a) of the bracket (102). In one embodiment, the outer diameter of the abutment housing (101) may be 20.8 millimeter which firmly engages with the slot (102a) of the bracket (102), wherein the diameter of the slot (102a) of the bracket (102) may have same dimension of 20.8milimeters as that of the abutment housing (101).
[0025] As indicated in FIG 3, the snap clips (101a, 101b) provided on the exterior periphery of the abutment housing (101) are flexible which are depressed to insert the abutment housing (101) into the bracket (102). Further, the snap clips (101a, 101b) protrudes against the slot (102a) in the bracket (102) subsequent to the insertion of the abutment housing (101) in the slot (102a) thereby clasping the abutment housing (101) within the bracket (102). In another embodiment, the assembling force of the abutment housing (101) into the bracket (102) may be up to 60N whereas as dissembling force of the abutment housing (101) from the bracket (102) may be at least 250N.
[0026] FIG 4 indicates an orthogonal cut section view of an abutment assembly (100) secured into the slot (102a) of the bracket (102) via snap clips (101a, 101b). As shown in the figure, the abutment housing (101) is inserted into the slot (102a) of the bracket (102) through the snap clips (101a, 101b) which firmly fastens the abutment housing (101) into the slot (102a) by exerting outward pressure on the bracket (102). The outward pressure generated by the snap clips (101a, 101b) prevents oscillatory movement of the abutment housing (101) while in operation thereby preventing vibrations and undesirable noise during gear shifting. Further, the outward pressure generated by the snap clips (101a, 101b) against the slot (102a) of the bracket (102) prevents slipping or retreating of the abutment housing (101) from the bracket (102). The guide pipe (101i) coupled to the abutment housing (101) may provide adjustment up to 8 degree of angular movements subsequent to the insertion of abutment housing (101) into the bracket (102).
[0027] FIG 5 indicates an orthogonal cut section view of an abutment assembly (100) comprising protrusions (101c) and anti-rotation locking walls (101d). The anti-rotation locking walls (101d) prevent the insertion of the abutment housing (101) into the bracket (102) in case the anti-rotation locking walls (101d) is descended in the direction of the slot (102a). The flanges provided at the periphery of the anti-rotation locking wall (101d) thwarts the abutment housing (101) from descending down the positive stops on bracket (102b, 102c). In another embodiment, the protrusions (101c) assist the insertion of the abutment housing (101) in case the anti-rotation locking wall (101d) is positioned in the direction opposite to the slot (102a) surface. A plurality of protrusions (101c) and anti-rotation locking walls (101d) engages in the slot (102a) subsequent to the assembly of the abutment housing (101) in the bracket (102) which prevents the axial movement and rotational movement of the abutment housing (101) in the bracket (102).
[0028] The design of the abutment housing (101) with snap clips (101a, 101b), in the embodiments described above, minimizes the number of parts in accomplishing the aim which makes it simple, easy to install and inexpensive. The present invention improves the ease of assembling abutment assembly (100) in the transmission system and also reduces the maintenance needs. Further, the protrusion (101c) and the anti-rotation locking walls (101d) prevents slipping and the noise experienced in the abutment assembly (100) subsequent to the engagement of the abutment housing (101) with the bracket (102). Further, the present invention provides easy shifting of gear level, since the front isolator (101f) and the rear isolator (101g) allows smooth operation by dampening the vibration experienced in the gear shifting cable.
[0029] In addition, the invention may be varied in size and dimension to accommodate different applications in automotive industry such as vehicles and in manufacturing industry comprising transmission system. However, the basic structural features described above will remain the same.
[0030] The many features and advantages of the invention are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the invention which fall within the true spirit and scope of the invention. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

Reference numbers:

Components Reference Numbers
Abutment housing 101
Snap clips 101a, 101b
Protrusions 101c
Anti-rotation locking wall 101d
Abutment ribs 101e
Front isolator 101f
Rear isolator 101g
Lock cap 101h
Guide Pipe 101i
Outer shaft 101j
Outer shaft mould 101k
Bracket 102
Slot 102a