Electric opening mechanism for a side door lock of a motor vehicle

Abstract

The utility model discloses an electric opening mechanism of automobile side door lock belongs to automobile side door lock technical field. The electric opening mechanism includes motor, electric opening worm, electric opening gear, electric opening connecting rod, electric opening transmission rod, pawl and pawl reset mechanism, and the motor rotates through the worm drive gear, and the gear drives the movement of connecting rod and transmission rod, and transmission rod pushes pawl axle and makes pawl to unlock. The two ends of electric opening connecting rod are connected through the center of electric opening gear shaft, form two force pole structure, make electric opening gear not automatic return after electric opening, realize electronic snow load function, avoid accidental relocking when no reset instruction. The lower part of electric opening gear is equipped with limit groove, and cooperates buffer block and realizes in -place limit and mute effect. The utility model discloses simple structure, small space occupation, high adaptability, has electronic snow load and mute design, improves the intelligent level and use reliability of door lock.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive side door locks, and in particular to an electric opening mechanism for an automotive side door lock. Background Technology

[0002] As the automotive industry rapidly moves towards intelligent and electric vehicles, users' functional demands for vehicle door locks are increasing, especially for side door locks with electric release capabilities. Traditional car side door locks mostly use a mechanical unlocking mechanism. Users pull the door handle, which disengages the pawl from the ratchet via an internal mechanical structure, releasing the latch and opening the door. This method requires manual operation to open the car door, making it relatively cumbersome.

[0003] While some electric side door lock unlocking mechanisms have emerged in the market, they still have significant shortcomings in practical applications. Firstly, existing electric unlocking mechanisms are complex in structure, have numerous components, and occupy a large amount of internal space within the lock body, resulting in poor compatibility with traditional mechanical lock bodies. They typically require significant modifications to the lock body for adaptation, increasing development costs and manufacturing difficulty. Secondly, after electric unlocking, existing mechanisms usually rely on elastic elements such as torsion springs for automatic reset. To prevent the door from relocking due to insufficient unlocking time, the electric unlocking operation often needs to be continuously maintained. This not only increases the burden on the motor but also easily damages the lock body and motor, reducing the system's reliability and lifespan.

[0004] Therefore, how to provide an electric unlocking mechanism for automotive side door locks that is simple in structure, highly adaptable, occupies little space, and can avoid damage caused by relocking and continuous electric opening due to excessively fast reset is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention provides an electric opening mechanism for a car side door lock, which solves the above-mentioned problems existing in the use of the prior art.

[0006] The technical solution of this utility model is implemented as follows: An electric opening mechanism for a car side door lock, characterized in that it comprises: Electric motor; An electrically operated worm gear is fixedly installed at the output end of the motor; An electrically operated gear is mounted on an electrically operated gear shaft and meshes with the electrically operated worm gear for transmission. The electric switch connecting rod rivet is installed on the electric switch gear; An electrically operated connecting rod is riveted and hinged to the electrically operated connecting rod. The electric switch transmission rod has one end hinged to the electric switch connecting rod via an electric switch transmission rod rivet, and the other end is mounted on a ratchet rivet. A pawl, mounted on the pawl rivet; A pawl reset mechanism is mounted on the pawl rivet and has a reset torsion spring on it; The pawl shaft is hinged to the pawl; When the electric switch gear rotates, it drives the electric switch connecting rod and the electric switch transmission rod to move together, pushing the pawl shaft to disengage and unlock the pawl.

[0007] Preferably, the connecting line between the two ends of the electric opening linkage passes through the center of the electric opening gear shaft to form a two-force bar structure, so that the electric opening gear does not have an automatic rotation tendency after being electrically opened, thus realizing the electronic snow load function.

[0008] Preferably, the lower part of the electric opening gear is provided with a limiting groove, including a first limiting groove and a second limiting groove, and a buffer block that cooperates with the limiting groove is provided to limit the movement and reduce noise when the electric opening or reset is in place.

[0009] Preferably, when the motor drives the electric switch gear to rotate in the opposite direction, it drives the electric switch connecting rod and the electric switch transmission rod to reset. The pawl reset mechanism provides a reset force through the reset torsion spring to assist the pawl in returning to its original position.

[0010] Preferably, the electrically operated worm gear and the electrically operated gear form a worm gear transmission pair.

[0011] Compared with the prior art, the electric opening mechanism for a car side door lock provided by this utility model has the following advantages: This invention achieves electric unlocking through the rational linkage of a small number of components, including a motor, worm gear, gear, connecting rod, and transmission rod. The overall structure is compact with a short transmission path. Because it requires minimal modification to the traditional mechanical lock body, it can be easily adapted to existing side door lock platforms, reducing development and manufacturing costs and facilitating large-scale application.

[0012] In this invention, the connecting lines at both ends of the electric opening linkage pass through the center of the electric opening gear shaft. Utilizing the characteristics of a two-force bar, the electric opening gear does not have an automatic tendency to rotate after being electrically opened, thus achieving the electronic snow load function. Without receiving a reset command, the pawl will not return to its original position, effectively preventing the door from accidentally relocking due to an excessively short unlocking time. Simultaneously, it eliminates the need for continuous motor power, avoiding damage to the motor and lock body due to prolonged load, thereby improving system safety and lifespan.

[0013] This invention features a limit groove at the lower part of the electric opening gear and an added buffer block. When the electric opening or reset is complete, the limit groove collides with the buffer block to limit the movement. Simultaneously, in the event of signal failure, the buffer block's limiting action causes the motor to stall and stop. The buffer block effectively reduces collision noise, improves the sound quality during electric door opening, and enhances the user experience. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the first direction of electric opening in this embodiment.

[0016] Figure 2 This is a schematic diagram of the second direction structure during the electric switching and reset process.

[0017] Figure 3 This is a structural diagram of an electric open gear.

[0018] Figure 4 This is a schematic diagram of the electronic snow load function.

[0019] Figure 5 This is an exploded schematic diagram of an electrically operated opening mechanism.

[0020] Figure 6 This is a schematic diagram of the buffer block installation structure. Detailed Implementation

[0021] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0022] like Figure 1-6 As shown, the electric opening mechanism for a car side door lock provided in this embodiment includes: a motor 1, an electric opening worm gear 2, an electric opening gear 3, an electric opening connecting rod rivet 4, an electric opening gear shaft 5, an electric opening connecting rod 6, an electric opening transmission rod 7, an electric opening transmission rod rivet 8, a pawl rivet 9, a pawl 10, a pawl reset mechanism 11, a reset torsion spring 12, a pawl shaft 13, and a buffer block 14.

[0023] Specifically, an electrically operated worm gear 2 is fixedly mounted on the output end of the motor 1. An electrically operated gear 3 is mounted on an electrically operated gear shaft 5 and can rotate freely around the shaft. The electrically operated worm gear 2 and the electrically operated gear 3 mesh with each other, forming a worm gear transmission pair. An electrically operated connecting rod rivet 4 is mounted on the electrically operated gear 3. One end of the electrically operated connecting rod 6 is hinged to the electrically operated gear 3 through the electrically operated connecting rod rivet 4 and can rotate relative to it. The other end of the electrically operated connecting rod 6 is hinged to one end of the electrically operated transmission rod 7 through the electrically operated transmission rod rivet 8, and the two can rotate relative to each other around the rivet. The other end of the electrically operated transmission rod 7 is mounted on a pawl rivet 9 and can rotate around the shaft. A pawl 10 and a pawl reset mechanism 11 are both mounted on the same pawl rivet 9 and can rotate around the shaft. A reset torsion spring 12 is mounted on the pawl reset mechanism 11 to provide auxiliary force for the pawl 10 to reset. A pawl shaft 13 is also hinged to the pawl 10. In addition, a buffer block 14 is provided at the corresponding position below the electric gear 3.

[0024] Electric opening process: When electric unlocking is required, the controller sends a start command to motor 1, which rotates in the forward direction, driving the electric worm gear 2 to rotate. The electric worm gear 2 drives the electric gear 3, which meshes with it, to rotate around the electric gear shaft 5 in a first direction (e.g., ...). Figure 1 (1) Rotation. When the electric unlocking gear 3 rotates, the electric unlocking connecting rod rivet 4 on it revolves, driving the electric unlocking connecting rod 6 to move. The electric unlocking connecting rod 6 then drives the electric unlocking transmission rod 7 to rotate around the pawl rivet 9 via the electric unlocking transmission rod rivet 8. During the rotation, the electric unlocking transmission rod 7 pushes the pawl shaft 13, thereby causing the pawl 10 to rotate around the pawl rivet 9 and disengage from the ratchet, realizing the electric unlocking of the door lock.

[0025] Implementation of electronic snow load function: Reference Figure 4 In this embodiment, the line connecting the two ends of the electrically operated connecting rod 6 (i.e., the end connected to the electrically operated connecting rod rivet 4 and the end connected to the electrically operated transmission rod rivet 8) passes through the center of the electrically operated gear shaft 5. Since the electrically operated connecting rod 6 is in a two-force state after being electrically opened to the correct position, and the worm gear transmission pair has a self-locking characteristic, the electrically operated gear 3 will not automatically reverse under the action of the reset torsion spring 12 or other external forces. Without receiving a reset command, the pawl 10 remains disengaged and will not return to its original position, thus realizing the electronic snow lock function. This function effectively avoids the problem of the door accidentally relocking due to an excessively short unlocking time, and also eliminates the need for continuous power supply to the motor 1, preventing motor stalling or damage to the lock body.

[0026] Electrical reset process: When the electric opening mechanism needs to be reset, the controller sends a reverse start command to motor 1. Motor 1 rotates in the reverse direction, driving the electric opening worm gear 2 to drive the electric opening gear 3 in the second direction (opposite to the first direction). Figure 4(ii) Rotation. When the electric switch gear 3 rotates in the reverse direction, it drives the electric switch connecting rod 6 and the electric switch transmission rod 7 to move in the opposite direction, causing the electric switch transmission rod 7 to disengage from the pushing action on the pawl shaft 13. At this time, under the torque of the reset torsion spring 12 set on the pawl reset mechanism 11, the pawl 10 is assisted to be pushed back to the initial locked position, completing the reset of the entire mechanism.

[0027] Limiting and silent design: Reference Figure 3 In this embodiment, a limiting groove is provided at the lower part of the electric opening gear 3, including a first limiting groove 301 and a second limiting groove 302, and a buffer block 14 is installed at a fixed position corresponding to the limiting groove. When the electric opening command is executed and the electric opening gear 3 rotates to the correct position, the side of the first limiting groove 301 collides with the buffer block 14 to achieve mechanical limiting; when the reset command is executed and the electric opening gear 3 resets to the correct position, the side of the second limiting groove 302 collides with the buffer block 14 to achieve mechanical limiting. The buffer block 14 is installed on the lock housing, such as... Figure 6 As shown. In case of abnormal conditions such as control signal failure, the collision between the limit slot and the buffer block will cause the motor 1 to stall briefly and stop, preventing excessive rotation and damage to the mechanism. At the same time, the buffer block 14 is made of elastic material (such as rubber or soft plastic), which effectively reduces the noise generated during limit collision and improves the sound quality of the door lock during electric operation.

[0028] In summary, the electric unlocking mechanism for the car side door lock provided in this embodiment achieves electric unlocking and reset functions through simple linkage transmission. It has a compact structure, occupies little space, and has high adaptability. It also features electronic snow load function and silent limit design, which significantly improves the intelligence level, security and user experience of the car side door lock.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric opening mechanism for a car side door lock, characterized in that, include: Motor (1); The electric worm gear (2) is fixedly installed at the output end of the motor (1); The electric gear (3) is mounted on the electric gear shaft (5) and meshes with the electric worm gear (2) for transmission; The electric starter connecting rod rivet (4) is installed on the electric starter gear (3); The electrically operated connecting rod (6) is hinged to the electrically operated connecting rod rivet (4); The electric start transmission rod (7) has one end hinged to the electric start connecting rod (6) via an electric start transmission rod rivet (8), and the other end is mounted on a pawl rivet (9); A pawl (10) is mounted on the pawl rivet (9); A pawl reset mechanism (11) is installed on the pawl rivet (9) and a reset torsion spring (12) is provided thereon. The pawl shaft (13) is hinged to the pawl (10); When the electric opening gear (3) rotates, it drives the electric opening connecting rod (6) and the electric opening transmission rod (7) to work together, pushing the pawl shaft (13) to disengage and unlock the pawl (10).

2. The electric opening mechanism for the automotive side door lock according to claim 1, characterized in that: The two ends of the electric opening linkage (6) are connected through the center of the electric opening gear shaft (5) to form a two-force bar structure, so that the electric opening gear (3) does not have an automatic rotation tendency after being electrically opened, thus realizing the electronic snow load function.

3. The electric opening mechanism for the automotive side door lock according to claim 1, characterized in that: The lower part of the electric opening gear (3) is provided with a limiting groove, including a first limiting groove (301) and a second limiting groove (302), and a buffer block (14) that cooperates with the limiting groove is provided to limit the movement and reduce noise when the electric opening or reset is in place.

4. The electric opening mechanism for the automotive side door lock according to claim 1, characterized in that: When the motor (1) drives the electric switch gear (3) to rotate in the opposite direction, driving the electric switch connecting rod (6) and the electric switch transmission rod (7) to reset, the pawl reset mechanism (11) provides reset force through the reset torsion spring (12) to assist the pawl (10) to return to its original position.

5. The electric opening mechanism for the automotive side door lock according to claim 1, characterized in that: The electrically operated worm gear (2) and the electrically operated gear (3) constitute a worm gear transmission pair.

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