Transmission mechanism for motor vehicle door lock

Abstract

The transmission mechanism comprises a transmission assembly, a locking connecting rod and a locking rocker arm, the center of the locking connecting rod is rotationally connected into a lock body through a pin shaft, and the transmission assembly and the locking connecting rod are matched to be used for driving the locking connecting rod to deflect. The center of the locking rocker arm is also rotationally connected into the lock body through a pin shaft, the top of the locking rocker arm is connected with the locking connecting rod in a hooking mode, and the locking connecting rod is of an integrated structure or a split structure. According to the transmission mechanism for the motor vehicle door lock, through the arrangement of the structure of the locking connecting rod, the locking connecting rod in the transmission mechanism for the motor vehicle door lock can be conveniently installed or detached and replaced, the split type locking connecting rod can be independently replaced according to damage of different positions, and therefore more cost is saved for replacement and maintenance of the locking connecting rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor vehicle door lock, in particular to a transmission mechanism for motor vehicle door lock. BACKGROUND

[0002] The door lock switch of the central locking system on the car is mostly composed of a master switch and a sub switch, the master switch is installed on the door near the driver, and the driver can lock or open all the doors of the car by operating the master switch; the sub switch is installed on each door and can control a door individually.

[0003] The structure for controlling the door by the sub switch on each door is complex, the transmission efficiency between each part is not high, and the parts are easily damaged due to frequent mutual force action, so that the entire central locking system needs to be replaced once damaged, and the maintenance and use cost is high. CONTENT OF THE INVENTION

[0004] In order to improve the problem that the structure of the motor vehicle door lock is complex, the transmission efficiency between each part is not high, and the parts are easily damaged due to frequent mutual force action, so that the entire central locking system needs to be replaced once damaged, and the maintenance and use cost is high, the present application provides a transmission mechanism for motor vehicle door lock.

[0005] The transmission mechanism for motor vehicle door lock provided by the present application adopts the following technical scheme:

[0006] The transmission mechanism for motor vehicle door lock comprises a transmission assembly, a locking link and a locking rocker, the center of the locking link is rotatably connected in the lock body by a pin shaft, the transmission assembly cooperates with the locking link to drive the deflection of the locking link, the center of the locking rocker is also rotatably connected in the lock body by a pin shaft, and the top of the locking rocker is hookingly connected with the locking link, and the locking link is provided in an integral structure or a split structure.

[0007] Further, the locking link comprises a shaft sleeve, a convex disc and two hook claws, the shaft sleeve is formed at the center of the convex disc and is connected with the pin shaft, and the two hook claws are both formed on the outer wall of the shaft sleeve at a certain interval.

[0008] Further, the locking link comprises a split shaft sleeve, a split convex disc and split hook claws, the split shaft sleeve is detachably connected and fixed with the split convex disc, the two split hook claws are both detachably connected and fixed with the split convex disc, and the two split hook claws are installed and arranged at the outer side of the shaft sleeve at a certain interval.

[0009] Further, the split shaft sleeve comprises a sleeve joint section, a combined section, a clamping slot and an opening, the sleeve joint section is formed at the center of the combined section and used for matching connection with the pin shaft, the clamping slot is formed on the combined section and penetrates through the combined section, the opening is formed at the outer edge of the combined section and communicates with the clamping slot, and the combined section is matched and connected with the split convex disc through the clamping slot and the opening.

[0010] Further, the split convex disc comprises a ring disc and a clamping block, the clamping block is formed on the side of the ring disc facing the split shaft sleeve, the clamping block can be inserted into the clamping slot from the opening, and the clamping block can be deflected and clamped with the clamping slot, and two insertion slots are formed on the outer wall of the ring disc at intervals, and positioning protrusions are outwardly protrudedly formed on opposite sides of each insertion slot.

[0011] Further, the clamping slot is provided as a circular hole, the opening is provided as a rectangular opening, the diameter of the clamping slot is greater than the width of the opening, the clamping block is provided as an oval, a rectangle or an oblong, the length of the clamping block is matched with the diameter of the clamping slot, and the width of the clamping block is matched with the width of the opening.

[0012] Further, the split hook claw is formed with an insertion block on the side close to the split convex disc, the insertion block is inserted into the insertion slot and clamped and connected therewith.

[0013] The beneficial technical effects of the present application are that: through the setting of the structure of the locking link, the locking link of the transmission mechanism for the motor vehicle door lock can be conveniently installed, disassembled and replaced, and the split locking link can be individually replaced according to the damage of different positions, so that the replacement and maintenance of the locking link are more cost-saving. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural exploded view of the transmission mechanism for the motor vehicle door lock;

[0015] Figure 2 is a structural view of the locking link in embodiment one;

[0016] Figure 3 is a structural view of the locking link in embodiment two;

[0017] Figure 4 is a structural view of the split shaft sleeve in embodiment two;

[0018] Figure 5 is a structural view of the split convex disc in embodiment two;

[0019] Figure 6 is a structural view of the split hook claw in embodiment two.

[0020] 10, transmission assembly; 20, locking link; 21, shaft sleeve; 22, convex disc; 23, hook claw; 24, split shaft sleeve; 241, sleeving section; 242, combining section; 243, clamping groove; 244, opening; 25, split convex disc; 251, annular disc; 252, clamping block; 253, insertion slot; 254, positioning protrusion; 26, split hook claw; 261, insertion block; 30, locking rocker arm. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] The present application discloses a transmission mechanism for a motor vehicle door lock. Referring to Figure 1 , the transmission mechanism for a motor vehicle door lock comprises a transmission assembly 10, a locking link 20 and a locking rocker arm 30. The center of the locking link 20 is rotatably connected in the lock body by a pin shaft, and the transmission assembly 10 cooperates with the locking link 20 to drive the deflection of the locking link 20. The center of the locking rocker arm 30 is also rotatably connected in the lock body by a pin shaft, and the top of the locking rocker arm 30 is hooked together with the locking link 20. Embodiment one

[0023] In this embodiment, the locking link 20 is provided as an integral structure.

[0024] Referring to Figure 2 , the locking link 20 comprises a shaft sleeve 21, a convex disc 22 and two hook claws 23. The shaft sleeve 21 is formed at the center of the convex disc 22 and cooperatively connected with the pin shaft, and the two hook claws 23 are both formed on the outer wall of the shaft sleeve 21 at a certain interval. Embodiment two

[0025] In this embodiment, the locking link 20 is provided as a split structure.

[0026] Referring to Figure 3 , the locking link 20 comprises a split shaft sleeve 24, a split convex disc 25 and a split hook claw 26. The split shaft sleeve 24 is detachably connected and fixed with the split convex disc 25, and the two split hook claws 26 are both detachably connected and fixed with the split convex disc 25, and the two split hook claws 26 are installed and arranged at a certain interval on the outside of the shaft sleeve 21.

[0027] Referring to Figure 4The split shaft sleeve 24 comprises a sleeve joint segment 241, a combination segment 242, a clamping groove 243 and an opening 244. The sleeve joint segment 241 is formed at the center of the combination segment 242 and used for matching connection with the pin shaft. The clamping groove 243 is formed on the combination segment 242 and penetrates the combination segment 242. The opening 244 is formed at the outer edge of the combination segment 242 and communicates with the clamping groove 243. The combination segment 242 is matched and connected with the split convex disc 25 by the clamping groove 243 and the opening 244.

[0028] Referring to Figure 5 The split convex disc 25 can comprise an annular disc 251, a clamping block 252, two insertion grooves 253 and two sets of positioning protrusions 254. The clamping block 252 is formed on the side of the annular disc 251 facing the split shaft sleeve 24. The clamping groove 243 is provided as a circular hole, and the opening 244 is provided as a rectangular opening. The diameter of the clamping groove 243 is greater than the width of the opening 244. The clamping block 252 is provided as an oval, a rectangle or an oblong. The length of the clamping block 252 is adapted to the diameter of the clamping groove 243, and the width of the clamping block 252 is adapted to the width of the opening 244, so that the clamping block 252 can be inserted into the clamping groove 243 from the opening 244, and then the clamping block 252 can be deflected by ninety degrees and clamped with the clamping groove 243, so that the split convex disc 25 and the split shaft sleeve 24 are assembled together. Two insertion grooves 253 are formed at intervals on the outer wall of the annular disc 251. The positioning protrusions 254 are outwardly protrudingly formed on the opposite sides of each insertion groove 253.

[0029] Referring to Figure 6 The split hook claw 26 is formed with an insertion block 261 near the side facing the split convex disc 25. The insertion block 261 is inserted into the insertion groove 253 and clamped and connected with the insertion groove 253, so that the two split hook claws 26 can be assembled and connected with the split convex disc 25.

[0030] Through the arrangement of the structure of the locking link 20, the locking link in the transmission mechanism for the motor vehicle door lock can be more conveniently installed, disassembled and replaced. The split locking link can be individually replaced according to the damage at different positions, so that the replacement and maintenance of the locking link is more cost-saving.

[0031] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A transmission mechanism for a motor vehicle door lock, comprising a transmission assembly (10), a locking link (20), and a locking rocker arm (30), wherein the center of the locking link (20) is rotatably connected to the lock body by a pin, and the transmission assembly (10) cooperates with the locking link (20) to drive the deflection of the locking link (20); the center of the locking rocker arm (30) is also rotatably connected to the lock body by a pin, and the top of the locking rocker arm (30) is hooked together with the locking link (20), characterized in that, The locking link (20) is configured as an integral structure or a split structure.

2. The transmission mechanism for a motor vehicle door lock according to claim 1, characterized in that, The locking link (20) includes a bushing (21), a cam (22) and two claws (23). The bushing (21) is formed at the center of the cam (22) and is connected to the pin. The two claws (23) are formed on the outer wall of the bushing (21) at a certain distance.

3. The transmission mechanism for a motor vehicle door lock according to claim 1, characterized in that, The locking link (20) includes a split bushing (24), a split cam (25), and split claws (26). The split bushing (24) and the split cam (25) are detachably connected and fixed. Both split claws (26) are detachably connected and fixed to the split cam (25), and the two split claws (26) are installed on the outside of the bushing (21) at a certain distance.

4. The transmission mechanism for a motor vehicle door lock according to claim 3, characterized in that, The split bushing (24) includes a sleeve section (241), a combination section (242), a slot (243), and an opening (244). The sleeve section (241) is formed at the center of the combination section (242) and is used to connect with a pin. The slot (243) is formed on the combination section (242) and extends through the combination section (242). The opening (244) is formed at the outer edge of the combination section (242) and communicates with the slot (243). The combination section (242) is connected to the split cam (25) by the slot (243) and the opening (244).

5. A transmission mechanism for a motor vehicle door lock according to claim 4, characterized in that, The split cam (25) includes an annular disk (251) and a locking block (252). The locking block (252) is formed on the side of the annular disk (251) facing the split bushing (24), and the locking block (252) can be inserted into the slot (243) from the opening (244), and the locking block (252) can be deflected and locked between the locking block (243).

6. A transmission mechanism for a motor vehicle door lock according to claim 5, characterized in that, The slot (243) is a circular hole, the opening (244) is a rectangular opening, and the diameter of the slot (243) is greater than the width of the opening (244). The block (252) is elliptical, rectangular or oblong, and the length of the block (252) is adapted to the diameter of the slot (243), and the width of the block (252) is adapted to the width of the opening (244).

7. A transmission mechanism for a motor vehicle door lock according to claim 5, characterized in that, Two slots (253) are formed at intervals on the outer wall of the annular disk (251), and each slot (253) has a positioning protrusion (254) protruding outward on opposite sides.

8. A transmission mechanism for a motor vehicle door lock according to claim 7, characterized in that, The split hook (26) has a plug (261) formed on the side near the split cam (25), and the plug (261) is inserted into the slot (253) and locked therein.

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