[001] The present subject matter described herein, relates to opening and closing of vehicle side door, and, in particularly, to a vehicle side door checker having an extended stopper link plate which engages with L shaped bracket mounted on the vehicle side door for preventing damage to stopper due to over-opening.
BACKGROUND AND PRIOR ART:
[002] Generally, side door checker/stopper (as shown figure 1) is used in the vehicle for stepwise opening of side door and to prevent self-closing and opening of doors when vehicle is at slope. Further, in existing designs, door opening extent (angle) is controlled by side stopper when stopper pin hits the stopper housing.
[003] Figure 1 illustrates the assembly and construction of the side door checker as known in the art. The side door checker assembly 100 has a check lever 102 turnably coupled to an automobile body at end 103. The check lever 102 includes a link plate 105 made of a metal and a cover layer made of a synthetic resin, covering the link plate. The check lever 102 is connected with the body of the vehicle at the point 103. The outer surface of check lever 102 is formed as a detent surface which moves inside the stopper housing 101 for controlled opening by motion of detent surface inside the stopper housing 101. The stopper housing is fixed to the side door in an openable and closable manner. Through the stopper housing 101 passes the check lever which can move relative to stopper housing; a detent mechanism housed in the stopper housing 101 and configured to keep the door at a predetermined open position in collaboration with the detent surface.
[004] Further, the side door checker 100 has a stopper pin 104 press-fitted into a fixing hole provided in a free end portion of the link plate 105 after the stopper housing 101. During the full open condition of stopper mechanism, the stopper pin 104 hits the stopper housing 101 and door stops.

[005] In the current design of the side door checker 100, when the side door is opened, maximum door opening is reached door stopper pin 104 strikes stopper housing. After repeated number of cycles, permanent impression of the stopper pin 104 starts forming on the stopper housing 101. If this is continued, then the lid can be overly damaged and inside packaging/child parts of the stopper housing is disturbed and stopper may malfunction. Also in pin type of stoppers, the stopper pin 104 is susceptible for brittle crack due to irregularities in heat treatment.
[006] Therefore, there is need in the art to develop a different arrangement for stopping the check lever during full open condition of the door to avoid hitting on the stopper housing. The present subject matter provides technical solution for the above mentioned technical problem.
OBJECTS OF THE INVENTION:
[007] The principal objective of the present invention is to provide a side door checker with extended L shaped link plate at free end.
[008] Another object of the present subject matter is to provide a L shaped bracket on inner panel of side door to receive bent portion of the L shaped link plate to prevent damage to side door stopper when door is over-opened due to abuse usage by customer.
[009] Another object of the present subject matter is to provide a vehicle side door checker and side door assembly for opening and closing of the side door.
[0010] Yet another object of the present invention is to provide a vehicle side door checker and side door assembly that is simple and inexpensive, and efficiently control and restrict angular opening of the side door.
SUMMARY OF THE INVENTION:
[0011] The subject matter disclosed herein relates to a vehicle side door checker and side door assembly for opening and closing of the side door. The present assembly controls side door opening angle by means of a bracket mounted on inner panel of the side door. The side door checker has an extended L shaped link plate at free end. The extended portion of L shaped link plate extends towards the

inner panel of the side door. On the side door, a L shaped bracket is mounted on inner panel. The L shaped bracket has vertical portion which is mounted on the inner panel in longitudinal direction of the vehicle and horizontal bent portion extend away from the inner panel of the side door. In the vehicle side door full open condition, the bent portion of the L shaped link plate engages with the horizontal bent portion of the L shaped bracket of the side door to restrict and control further movement of the side door.
[0012] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0014] Fig. 1 illustrates side door checker as known in the art;
[0015] Fig. 2 and 3 illustrate engagement of side door checker with L shaped bracket in side door open condition, in accordance with an embodiment of the present subject matter; and
[0016] Fig. 4 and 5 illustrate position of L shaped link plate of the side door checker with the L shaped bracket of the side door during side door close condition, in accordance with an embodiment of the present subject matter.

[0017] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0018] The subject matter disclosed herein relates to a vehicle side door checker and side door assembly for opening and closing of the side door. The present assembly controls side door opening angle by means of a bracket mounted on inner panel of the side door. The side door checker has an extended L shaped link plate at free end. The bent portion of the extended L shaped link plate extends towards the inner panel of the side door. On the side door, a L shaped bracket is mounted on inner panel. The L shaped bracket has vertical portion which is mounted on the inner panel in longitudinal direction of the vehicle and horizontal bent portion extend away from the inner panel of the side door. In the vehicle side door full open condition, the bent portion of the L shaped link plate engages with the horizontal bent portion of the L shaped bracket of the side door to restrict and control further movement of the side door.
[0019] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and

conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying 5 figures.
[0020] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise 10 various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0021] Figure 2 and 3 illustrate engagement of side door checker with L shaped bracket in side door open condition, in accordance with an embodiment of the present subject matter. The vehicle side door checker and side door assembly 200
15 includes side door checker, side door, and L shaped bracket 205. The side door checker has a check lever 202 coupled to a vehicle body at one end and other end is freely movable inside a stopper housing 203. The check lever 202 includes a core plate made of a metal and a cover layer made of a synthetic resin. The cover layer of the core metal plate has an outer surface formed as a detent surface. The
20 stopper housing (203) fixed to the side door 201 coupled to the vehicle body in an openable and closable manner. The stopper housing 203 has a slot for slide motion of the check lever 202 during opening and closing operation of the side door (201). The stopper housing 203 has a detent mechanism which is configured to keep the side door at a predetermined open position in collaboration with the
25 detent surface. The detent surface of the check lever 202 moves in the detent mechanism which controls the opening of the side door at different angles.
[0022] Further, the free end of the check lever 202 has an L shaped link plate 204
instead of stopper pin mechanism as known in the art. The L shaped link plate 204
is integrated with the check lever plate 202. The L shaped link plate 204 is a
30 stamping part. The check lever 202 moves in the stopper housing 203 during
6

opening and closing of the door, accordingly, the free end having the L shaped link plate moves inside the space between outer and inner panel. The L shaped link plate 204 has an extended portion 204a at the end. The extended portion 204a extends toward the inner panel of the side door 201 from vertical portion of the L 5 shaped link plate 204.
[0023] In further embodiment of the present subject matter, the side door 201 has a L shaped bracket 205 which is mounted in longitudinal direction on inner panel of the side door 201. The L shaped bracket 205 is mounted on the inner panel of the side door 201 by means of stud bolts. The L shaped bracket 205 has a vertical
10 portion 205b which is longitudinally (along axis X) mounted on the inner panel of the side door 205 and horizontal bent portion 205a which extends in perpendicular direction from the vertical portion 205b away from vehicle cabin or in other words towards outer panel side of the side door. The horizontal bent portion 205a of the L shaped bracket (205) extends in perpendicular direction from the vertical
15 portion 205b away from the inner panel of the side door (201). The L shaped bracket 205 is made of sheet metal having high strength and stiffness. In the present arrangement, the horizontal bent portion 205a and extended portion 204a of the L shaped link plate 204 faces each other. The check lever plate 202 and the horizontal bent portion 205a have clearance for opening and closing of the side
20 door 201.
[0024] In the full open condition of the side door 201, the L shaped link plate 204 of the side door checker engages with the L shaped bracket 205 of the side door 201. The extended portion 204a of the L shaped link plate 204 engages with horizontal bent portion 205a of the L shaped bracket 205 to stop opening of the 25 side door 201. The engagement of the L shaped link plate 204 of the side door checker with the L shaped bracket 205 of the side door 201 restricts further movement of the side door 201 in open direction. Therefore, when side door 201 is fully opened, instead of hitting the stopper housing 203, the L shaped link plate hits the L shaped bracket of the side door for restricting further movement of the
7

check lever plate 202 in the stopper housing. In this way no force/impact comes on stopper housing(203)
[0025] Advantages of the present subject matter:
[0026] Stopper housing is prevented from damage either from stopper pin which 5 itself is susceptible for crack or extended link plate.
[0027] In the present subject matter stopper pin is eliminated. So a child part is eliminated and resulting assembly time at suppliers end is reduced.
[0028] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present
10 subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations
15 which fall within the scope of the present subject matter.

Claims:We claim:

1.A vehicle side door checker and side door assembly (200) comprising:
a check lever (202) coupled to a vehicle body at one end and other end is free, the check lever (202) including a core plate (204) made of a metal and a cover layer made of a synthetic resin, wherein the cover layer having an outer surface formed as a detent surface;
a stopper housing (203) fixed to the side door (201) coupled to the vehicle body in an openable and closable manner, the stopper housing (203) has slot for motion of the check lever (202) during opening and closing operation of the side door (201);
a detent mechanism housed in the stopper housing and configured to keep the side door at a predetermined open position in collaboration with the detent surface;
characterized in that
an extended L shaped link plate (204) provided at the free end of the check lever (202), wherein the free end of the check lever plate (202) moves in the side door (201);
a L shaped bracket (205) mounted on inner panel of the side door (201);
wherein the L shaped link plate (204) of the check lever (202) engages with the L shaped bracket (205) of the side door (201) in full open condition of the side door (201) to restrict further movement of the side door (201).

2. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein the extended L shaped link plate (204) is integrated with the check lever plate (202).

3. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein extended portion (204a) of the L shaped link plate (204) extend toward the inner panel of the side door (201).

4. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein the L shaped bracket (205) has a vertical portion (205b) longitudinally (axis X) mounted on the inner panel of the side door (201) and horizontal bent portion (205a) extending in perpendicular direction from the vertical portion (205b) towards outer panel of the side door.

5. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein horizontal bent portion (205a) of the L shaped bracket (205) extend in perpendicular direction from the vertical portion (205b) away from the inner panel of the side door (201).

6. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein horizontal bent portion (205a) and bent portion (204a) of the extended L shaped link plate (204) faces each other.

7. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein extended portion (204a) of the L shaped link plate (204) engages with horizontal bent portion (205a) of the L shaped bracket (205) to stop futher opening of the side door (201).

8. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein the L shaped bracket (205) is made of sheet metal.

9. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein the L shaped bracket (205) is mounted on the inner panel of the side door (201) by means of stud mounting.

10. The vehicle side door checker and side door assembly (200) as claimed in claim 1, wherein the check lever plate (202) and the horizontal bent portion (205a) has clearance for opening and closing of the side door (201).
, Description:SIDE DOOR CHECKER WITH L SHAPED BRACKET ON VEHICLE SIDE DOOR
FIELD OF INVENTION:
[001] The present subject matter described herein, relates to opening and closing of vehicle side door, and, in particularly, to a vehicle side door checker having an extended stopper link plate which engages with L shaped bracket mounted on the vehicle side door for preventing damage to stopper due to over-opening.
BACKGROUND AND PRIOR ART:
[002] Generally, side door checker/stopper (as shown figure 1) is used in the vehicle for stepwise opening of side door and to prevent self-closing and opening of doors when vehicle is at slope. Further, in existing designs, door opening extent (angle) is controlled by side stopper when stopper pin hits the stopper housing.
[003] Figure 1 illustrates the assembly and construction of the side door checker as known in the art. The side door checker assembly 100 has a check lever 102 turnably coupled to an automobile body at end 103. The check lever 102 includes a link plate 105 made of a metal and a cover layer made of a synthetic resin, covering the link plate. The check lever 102 is connected with the body of the vehicle at the point 103. The outer surface of check lever 102 is formed as a detent surface which moves inside the stopper housing 101 for controlled opening by motion of detent surface inside the stopper housing 101. The stopper housing is fixed to the side door in an openable and closable manner. Through the stopper housing 101 passes the check lever which can move relative to stopper housing; a detent mechanism housed in the stopper housing 101 and configured to keep the door at a predetermined open position in collaboration with the detent surface.
[004] Further, the side door checker 100 has a stopper pin 104 press-fitted into a fixing hole provided in a free end portion of the link plate 105 after the stopper housing 101. During the full open condition of stopper mechanism, the stopper pin 104 hits the stopper housing 101 and door stops.
[005] In the current design of the side door checker 100, when the side door is opened, maximum door opening is reached door stopper pin 104 strikes stopper housing. After repeated number of cycles, permanent impression of the stopper pin 104 starts forming on the stopper housing 101. If this is continued, then the lid can be overly damaged and inside packaging/child parts of the stopper housing is disturbed and stopper may malfunction. Also in pin type of stoppers, the stopper pin 104 is susceptible for brittle crack due to irregularities in heat treatment.
[006] Therefore, there is need in the art to develop a different arrangement for stopping the check lever during full open condition of the door to avoid hitting on the stopper housing. The present subject matter provides technical solution for the above mentioned technical problem.
OBJECTS OF THE INVENTION:
[007] The principal objective of the present invention is to provide a side door checker with extended L shaped link plate at free end.
[008] Another object of the present subject matter is to provide a L shaped bracket on inner panel of side door to receive bent portion of the L shaped link plate to prevent damage to side door stopper when door is over-opened due to abuse usage by customer.
[009] Another object of the present subject matter is to provide a vehicle side door checker and side door assembly for opening and closing of the side door.
[0010] Yet another object of the present invention is to provide a vehicle side door checker and side door assembly that is simple and inexpensive, and efficiently control and restrict angular opening of the side door.
SUMMARY OF THE INVENTION:
[0011] The subject matter disclosed herein relates to a vehicle side door checker and side door assembly for opening and closing of the side door. The present assembly controls side door opening angle by means of a bracket mounted on inner panel of the side door. The side door checker has an extended L shaped link plate at free end. The extended portion of L shaped link plate extends towards the inner panel of the side door. On the side door, a L shaped bracket is mounted on inner panel. The L shaped bracket has vertical portion which is mounted on the inner panel in longitudinal direction of the vehicle and horizontal bent portion extend away from the inner panel of the side door. In the vehicle side door full open condition, the bent portion of the L shaped link plate engages with the horizontal bent portion of the L shaped bracket of the side door to restrict and control further movement of the side door.
[0012] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0014] Fig. 1 illustrates side door checker as known in the art;
[0015] Fig. 2 and 3 illustrate engagement of side door checker with L shaped bracket in side door open condition, in accordance with an embodiment of the present subject matter; and
[0016] Fig. 4 and 5 illustrate position of L shaped link plate of the side door checker with the L shaped bracket of the side door during side door close condition, in accordance with an embodiment of the present subject matter.
[0017] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0018] The subject matter disclosed herein relates to a vehicle side door checker and side door assembly for opening and closing of the side door. The present assembly controls side door opening angle by means of a bracket mounted on inner panel of the side door. The side door checker has an extended L shaped link plate at free end. The bent portion of the extended L shaped link plate extends towards the inner panel of the side door. On the side door, a L shaped bracket is mounted on inner panel. The L shaped bracket has vertical portion which is mounted on the inner panel in longitudinal direction of the vehicle and horizontal bent portion extend away from the inner panel of the side door. In the vehicle side door full open condition, the bent portion of the L shaped link plate engages with the horizontal bent portion of the L shaped bracket of the side door to restrict and control further movement of the side door.
[0019] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.
[0020] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
[0021] Figure 2 and 3 illustrate engagement of side door checker with L shaped bracket in side door open condition, in accordance with an embodiment of the present subject matter. The vehicle side door checker and side door assembly 200 includes side door checker, side door, and L shaped bracket 205. The side door checker has a check lever 202 coupled to a vehicle body at one end and other end is freely movable inside a stopper housing 203. The check lever 202 includes a core plate made of a metal and a cover layer made of a synthetic resin. The cover layer of the core metal plate has an outer surface formed as a detent surface. The stopper housing (203) fixed to the side door 201 coupled to the vehicle body in an openable and closable manner. The stopper housing 203 has a slot for slide motion of the check lever 202 during opening and closing operation of the side door (201). The stopper housing 203 has a detent mechanism which is configured to keep the side door at a predetermined open position in collaboration with the detent surface. The detent surface of the check lever 202 moves in the detent mechanism which controls the opening of the side door at different angles.
[0022] Further, the free end of the check lever 202 has an L shaped link plate 204 instead of stopper pin mechanism as known in the art. The L shaped link plate 204 is integrated with the check lever plate 202. The L shaped link plate 204 is a stamping part. The check lever 202 moves in the stopper housing 203 during opening and closing of the door, accordingly, the free end having the L shaped link plate moves inside the space between outer and inner panel. The L shaped link plate 204 has an extended portion 204a at the end. The extended portion 204a extends toward the inner panel of the side door 201 from vertical portion of the L shaped link plate 204.
[0023] In further embodiment of the present subject matter, the side door 201 has a L shaped bracket 205 which is mounted in longitudinal direction on inner panel of the side door 201. The L shaped bracket 205 is mounted on the inner panel of the side door 201 by means of stud bolts. The L shaped bracket 205 has a vertical portion 205b which is longitudinally (along axis X) mounted on the inner panel of the side door 205 and horizontal bent portion 205a which extends in perpendicular direction from the vertical portion 205b away from vehicle cabin or in other words towards outer panel side of the side door. The horizontal bent portion 205a of the L shaped bracket (205) extends in perpendicular direction from the vertical portion 205b away from the inner panel of the side door (201). The L shaped bracket 205 is made of sheet metal having high strength and stiffness. In the present arrangement, the horizontal bent portion 205a and extended portion 204a of the L shaped link plate 204 faces each other. The check lever plate 202 and the horizontal bent portion 205a have clearance for opening and closing of the side door 201.
[0024] In the full open condition of the side door 201, the L shaped link plate 204 of the side door checker engages with the L shaped bracket 205 of the side door 201. The extended portion 204a of the L shaped link plate 204 engages with horizontal bent portion 205a of the L shaped bracket 205 to stop opening of the side door 201. The engagement of the L shaped link plate 204 of the side door checker with the L shaped bracket 205 of the side door 201 restricts further movement of the side door 201 in open direction. Therefore, when side door 201 is fully opened, instead of hitting the stopper housing 203, the L shaped link plate hits the L shaped bracket of the side door for restricting further movement of the check lever plate 202 in the stopper housing. In this way no force/impact comes on stopper housing(203)
[0025] Advantages of the present subject matter:
[0026] Stopper housing is prevented from damage either from stopper pin which itself is susceptible for crack or extended link plate.
[0027] In the present subject matter stopper pin is eliminated. So a child part is eliminated and resulting assembly time at suppliers end is reduced.
[0028] Although embodiments for the present subject matter have been described in language specific to structural features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/component of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.