Locking mechanism for a vehicle door, vehicle door and vehicle

By installing a reinforcing component on the outside of the car door and connecting it to the lock cylinder assembly, the problem of the lock cylinder assembly detaching due to external impact is solved, thus improving the vehicle's anti-theft performance.

CN118273592BActive Publication Date: 2026-08-04BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BYD CO LTD
Filing Date
2023-10-12
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

In existing technologies, the lock cylinder assembly is easily detached from the car door due to external impacts, causing the door lock to fail and increasing the risk of vehicle theft.

Method used

A reinforcing member is installed on the outside of the car door and connected to the lock cylinder assembly. The reinforcing member restricts the displacement of the lock cylinder assembly relative to the car door and prevents it from detaching.

Benefits of technology

It effectively improves the vehicle's anti-theft performance, prevents the lock cylinder assembly from detaching from the door when struck from the outside, and enhances the stability of the lock cylinder assembly.

✦ Generated by Eureka AI based on patent content.

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    Figure CN118273592B_ABST
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Abstract

The present disclosure relates to a locking mechanism for a vehicle door, a vehicle door and a vehicle. The locking mechanism for the vehicle door comprises a lock cylinder assembly installed on the vehicle door, and a reinforcing member arranged outside the vehicle door and connected with the lock cylinder assembly to prevent the lock cylinder assembly from being separated from the vehicle door. The reinforcing member is arranged outside the vehicle door, and the vehicle door blocks the displacement of the reinforcing member towards the inside. In this way, when the lock cylinder assembly is subjected to external blows, the reinforcing member can limit the displacement of the lock cylinder assembly relative to the vehicle door towards the inside (in the direction of the blows) with the help of the vehicle door, thereby avoiding the lock cylinder assembly from being separated from the vehicle door due to external force, and effectively improving the anti-theft performance of the vehicle.
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Description

Technical Field

[0001] This disclosure relates to the field of vehicle anti-theft technology, specifically to a locking mechanism for a vehicle door, a vehicle door, and a vehicle. Background Technology

[0002] A door handle assembly typically includes a mounting bracket installed on the door, a handle installed on the mounting bracket, and a lock cylinder assembly installed on the mounting bracket.

[0003] In existing technology, when someone strikes the lock cylinder assembly from the outside, the lock cylinder assembly is easily detached from the mounting piece, or due to insufficient installation strength between the mounting piece and the car door, the lock cylinder assembly and the mounting piece may detach from the car door together, causing the door lock to fail and ultimately allowing the car door to be opened from the outside, greatly increasing the risk of vehicle theft. Summary of the Invention

[0004] The purpose of this disclosure is to provide a locking mechanism for a vehicle door, a vehicle door, and a vehicle, so as to at least partially solve the problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a locking mechanism for a vehicle door, comprising: a lock cylinder assembly installed on the vehicle door; and a reinforcing member disposed on the outer side of the vehicle door, the reinforcing member being connected to the lock cylinder assembly to prevent the lock cylinder assembly from detaching from the vehicle door.

[0006] Optionally, the system also includes a mounting element disposed on the inside of the door, through which the lock cylinder assembly is mounted to the door.

[0007] Optionally, the reinforcement includes a baffle for attaching to the outside of the door, and a claw extending into the inside of the door and connecting to the baffle and the lock cylinder assembly.

[0008] Optionally, it also includes a connector that can be locked or disengaged between the pawl and the lock cylinder assembly.

[0009] Optionally, one of the claw and the connector has a plurality of first recesses and the other has a plurality of first protrusions adapted to the plurality of first recesses; one of the connector and the lock cylinder assembly has a plurality of second recesses and the other has a plurality of second protrusions adapted to the plurality of second recesses, wherein the connector can move in a direction parallel to the door, so that the first protrusion extends into the corresponding first recess and the second protrusion extends into the corresponding second recess, or the first protrusion moves out of the corresponding first recess and the second protrusion moves out of the corresponding second recess.

[0010] Optionally, the connector has a threaded hole, and the locking mechanism further includes a locking bolt that mates with the threaded hole. The locking bolt passes through the threaded hole so that when the locking bolt rotates in one direction, it causes the connector to be locked between the pawl and the lock cylinder assembly; and when the locking bolt rotates in another direction, it causes the connector to be disengaged between the pawl and the lock cylinder assembly.

[0011] Optionally, the connector has a limiting surface, which is configured such that when the connector moves to abut against the mounting member, the first protrusion extends into the first recess and the second protrusion extends into the second recess.

[0012] Optionally, the door has a first mounting hole for the lock cylinder assembly to extend into, and the baffle has a second mounting hole for the lock cylinder assembly to extend into.

[0013] Optionally, it also includes a gasket placed between the baffle and the door.

[0014] Optionally, the door has a first mounting hole for the lock cylinder assembly to extend into, and the outer contour of the baffle is designed such that the baffle is always attached to the outside of the door.

[0015] According to a second aspect of this disclosure, a vehicle door is provided, including the aforementioned locking mechanism for a vehicle door.

[0016] According to a third aspect of this disclosure, a vehicle is provided, including the aforementioned door.

[0017] By using the above technical solution, the reinforcement is placed on the outside of the door. The door will block the inward displacement of the reinforcement. With this design, when the lock cylinder assembly is hit by an external impact, the reinforcement can restrict the inward displacement of the lock cylinder assembly relative to the door (along the impact direction) by the door, thus preventing the lock cylinder assembly from being detached from the door by external force and effectively improving the vehicle's anti-theft performance.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a front view of a locking mechanism for a vehicle door, exemplarily shown according to this disclosure;

[0021] Figure 2 It is along Figure 1 Cross-sectional view along the AA direction;

[0022] Figure 3 It is along Figure 1 Cross-sectional view in the middle BB direction;

[0023] Figure 4 This is a schematic diagram illustrating a lock cylinder assembly, connector, and reinforcement at an angle when locked, as exemplarily shown in this disclosure.

[0024] Figure 5 Figure 4 This is a schematic diagram of a lock cylinder assembly, connector, and reinforcement shown by way of example according to this disclosure, when locked from another angle;

[0025] Figure 6 This is a schematic diagram of a reinforcement member exemplarily shown according to this disclosure.

[0026] Explanation of reference numerals in the attached figures

[0027] 100-Mounting component; 200-Vehicle door; 300-Lock cylinder assembly; 310-Lock cylinder; 320-Lock cylinder sleeve; 400-Reinforcing component; 410-Baffle; 411-Second mounting hole; 420-Claw; 510-Connector; 520-Locking bolt; 610-First recess; 620-First protrusion; 630-Second recess; 640-Second protrusion; 700-Washer. Detailed Implementation

[0028] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" may be based on the structure of the relevant component itself or on the orientation of the relevant component when they are used together. For example, "the mounting part is located on the "inner" side of the door" means that the mounting part is installed on the side of the door facing the interior of the vehicle; "the reinforcement part is located on the "outer" side of the door" means that the reinforcement part is at least partially located on the side of the door facing the interior of the vehicle.

[0030] In this disclosure, the terms "first," "second," etc., are used to distinguish one element from another and do not indicate any order or importance. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0031] Reference Figures 1-6In the embodiments of this disclosure, a locking mechanism for a vehicle door is provided, including a lock cylinder assembly 300 and a reinforcing member 400. The lock cylinder assembly 300 is mounted on the vehicle door 200, and the reinforcing member 400 is disposed on the outer side of the vehicle door 200. The reinforcing member 400 is connected to the lock cylinder assembly 300 to prevent the lock cylinder assembly 300 from detaching from the vehicle door 200. It should be noted that "the reinforcing member 400 is disposed on the outer side of the vehicle door 200" means that the reinforcing member 400 is at least partially disposed on the outer side of the vehicle door 200.

[0032] This disclosure does not limit the specific structure of the lock cylinder assembly 300. For example, in the embodiments of this disclosure, the lock cylinder assembly 300 may include a lock cylinder 310 and a lock cylinder sleeve 320 sleeved on the outer periphery of the lock cylinder 310. In this case, the reinforcing member 400 may be directly connected between the door 200 and the lock cylinder 310, or it may be connected between the door 200 and the lock cylinder sleeve 320.

[0033] In embodiments of this disclosure, the reinforcing member 400 can be engaged with the lock cylinder assembly 300 in the impact direction via the recesses and protrusions described below, thereby restricting the displacement of the lock cylinder assembly 300 relative to the door 200 in the impact direction. Furthermore, in some other embodiments, the reinforcing member 400 can also be connected to the lock cylinder assembly 300 by means of bolts and nuts, etc., and this disclosure does not impose limitations on this.

[0034] By using the above technical solution, the reinforcing member 400 is set on the outside of the door 200. The door 200 will block the inward displacement of the reinforcing member 400. With this design, when the lock cylinder assembly 300 is hit by an external impact, since the lock cylinder assembly 300 is connected to the door 200 by the reinforcing member 400, the reinforcing member 400 can use the door 200 to restrict the inward displacement of the lock cylinder assembly 300 relative to the door 200 (along the impact direction), thereby preventing the lock cylinder assembly 300 from being detached from the door 200 by external force, and effectively improving the vehicle's anti-theft performance.

[0035] In order to install the lock cylinder assembly 300 on the vehicle door, refer to Figures 1-6 In the embodiments disclosed herein, the locking mechanism for the vehicle door may further include a mounting member 100, which may be disposed on the inside of the vehicle door 200, and the lock cylinder assembly 300 may be mounted on the vehicle door 200 via the mounting member 100. Here, the mounting member 100 refers to a mounting base for mounting parts such as the lock cylinder assembly 300 to the vehicle door 200, such as a handle base.

[0036] In the embodiments of this disclosure, the mounting component 100 can be installed on the inside of the door 200 by means of bolts, nuts or snap-fit ​​structures, and the lock cylinder assembly 300 can be installed on the mounting component 100 by means of bolts, nuts or snap-fit ​​structures, etc. This disclosure does not limit this.

[0037] This disclosure does not limit the structure of the door 200. When the door 200 includes an inner panel and an outer panel, the mounting member 100 is disposed on the inner side of the outer panel, and the reinforcing member 400 is disposed on the outer side of the outer panel. When the door 200 includes only one door panel, the mounting member 100 is disposed on the inner side of the door panel, and the reinforcing member 400 is disposed on the outer side of the door panel.

[0038] This disclosure does not limit the specific structure of the reinforcing member 400; refer to... Figure 3 and Figure 6 In some embodiments, the reinforcement 400 may include a baffle 410 for attaching to the outside of the door 200, and a claw 420 extending into the inside of the door 200 and connecting the baffle 410 and the lock cylinder assembly 300. In this case, the door 200 may have a through hole for the claw 420 to pass through, or the claw 420 may extend into the inside of the door 200 via a first mounting hole mentioned below. With this design, when the lock cylinder assembly 300 is subjected to external impact, it tends to move inward. Since the claw 420 is connected between the lock cylinder assembly 300 and the baffle 410, the lock cylinder assembly 300 can pull the baffle 410 inward through the claw 420. Since the baffle 410 is attached to the outside of the door 200, the door can act as a barrier to restrict the movement of the baffle 410 inward, thereby preventing the lock cylinder assembly 300 from moving inward and avoiding the lock cylinder assembly 300 from being detached from the mounting piece 100 or causing the mounting piece 100 to detach from the door 200.

[0039] In the embodiments of this disclosure, the baffle 410 and the door 200 can be in a simple fit, or in some other embodiments, in order to prevent the baffle 410 from shifting relative to the door 200, adhesive or the like can be applied between the baffle 410 and the door 200.

[0040] Furthermore, referring to Figure 2 and Figure 3 In embodiments of this disclosure, the locking mechanism for the vehicle door may further include a gasket 700 disposed between the baffle 410 and the vehicle door 200. By providing the gasket 700, it can serve two purposes: firstly, it can provide cushioning and protection, preventing the surface of the vehicle door 200 from being damaged or scratched by the baffle 410; secondly, it can also serve a sealing purpose, ensuring the airtightness of the locking mechanism and preventing external impurities, moisture, etc., from entering the interior and affecting precision components such as the lock cylinder assembly 300.

[0041] Reference Figures 3-5In embodiments of this disclosure, the locking mechanism for the vehicle door may further include a connector 510 lockably or detachably connected between the pawl 420 and the lock cylinder assembly 300. This design allows the connector 510 to be lockably connected between the pawl 420 and the lock cylinder assembly 300 when it is necessary to lock the lock cylinder assembly 300 to the pawl 420 to limit displacement of the lock cylinder assembly 300 relative to the door in the impact direction; and to be detachably connected between the pawl 420 and the lock cylinder assembly 300 when it is necessary to disassemble and repair the lock cylinder assembly 300. This disclosure does not describe the structure of the connector 510 or how it switches between locked and detached connections. For example, in embodiments of this disclosure, the connector 510 may be a slide valve that switches between locked and detached connections by reciprocating in a direction parallel to the door 200.

[0042] Reference Figures 2-6 In the embodiments disclosed herein, one of the claw 420 and the connector 510 may be formed with a plurality of first recesses 610, and the other may be formed with a plurality of first protrusions 620 adapted to the plurality of first recesses 610. One of the connector 510 and the lock cylinder assembly 300 may be formed with a plurality of second recesses 630, and the other may be formed with a plurality of second protrusions 640 adapted to the plurality of second recesses 630. The connector 510 may move in a direction parallel to the door 200, such that the first protrusions 620 extend into the corresponding first recesses 610 and the second protrusions 640 extend into the corresponding second recesses 630, or that the first protrusions 620 move out of the corresponding first recesses 610 and the second protrusions 640 move out of the corresponding second recesses 630. With this design, when the connector 510 needs to be locked between the claw 420 and the lock cylinder assembly 300, it is only necessary to drive the connector 510 to move in a direction parallel to the door 200 until the first protrusion 620 extends into the corresponding first recess 610 and the second protrusion 640 extends into the corresponding second recess 630. At this time, the corresponding recesses and protrusions form a locking limit in the direction perpendicular to the door 200 (the impact direction) to restrict the displacement of the lock cylinder assembly 300 relative to the door in the impact direction. When it is necessary to disassemble and repair the lock cylinder assembly 300, it is only necessary to drive the connector 510 in the reverse direction to move the first protrusion 620 out of the corresponding first recess 610 and the second protrusion 640 out of the corresponding second recess 630.

[0043] This disclosure does not limit the number of the first recess 610, the first convex portion 620, the second recess 630, and the second convex portion 640. For example, the number of the first recess 610 and the first convex portion 620 can be 3 and 4 respectively, and the number of the second recess 630 and the second convex portion 640 can be 2 and 3 respectively.

[0044] In the embodiments disclosed herein, the first recess 610 and the second recess 630 can be respectively constructed as U-shaped grooves extending through the connecting member 510 along its movement direction, and the first protrusion 620 and the second protrusion 640 can be respectively constructed as protrusions matching the shape of the corresponding U-shaped grooves. With this design, the first protrusion 620 and the second protrusion 640 can move along the connecting member 510 in a direction parallel to the door 200, so that the first protrusion 620 and the second protrusion 640 can respectively enter the corresponding U-shaped grooves from their side ends, and the two side walls of the U-shaped grooves can lock the corresponding protrusions in a direction perpendicular to the door 200. Furthermore, in some other embodiments, the first recess 610 and the second recess 630 can be respectively constructed as grooves with openings facing the corresponding protrusions (open at one end). When it is necessary to lock the lock cylinder assembly 300 and the pawl 420, the driving connecting member 510 can drive the protrusions to extend into the corresponding first recess 610 or second recess 630.

[0045] Furthermore, in order to enable the drive connector 510 to move in a direction parallel to the door 200, refer to Figures 3-5 In embodiments of this disclosure, the connector 510 may have a threaded hole (not shown in the figure), and the locking mechanism may further include a locking bolt 520 that mates with the threaded hole. The locking bolt 520 may pass through the threaded hole so that when the locking bolt 520 rotates in one direction, it engages the connector 510 between the pawl 420 and the lock cylinder assembly 300; and when the locking bolt 520 rotates in another direction, it disengages the connector 510 from the pawl 420 and the lock cylinder assembly 300. The locking bolt 520 is rotatably mounted on the mounting member 100, with one end protruding from the mounting member 100. With this design, during assembly, after the lock cylinder assembly 300 and the pawl 420 are installed in place, the operator can directly tighten the locking bolt 520 from the outside to drive the connecting piece 510 to move and lock it between the pawl 420 and the lock cylinder assembly 300. Similarly, when the lock cylinder assembly 300 needs to be disassembled for maintenance, the operator only needs to tighten the locking bolt 520 in the opposite direction from the outside. The operation is convenient and quick, which is beneficial for assembly and disassembly.

[0046] To ensure that the protrusions can accurately extend into the corresponding recesses when the drive connector 510 moves, in the embodiments of this disclosure, the connector 510 may have a limiting surface (not shown in the figure). The limiting surface may be configured such that, when the connector 510 moves to abut against the mounting member 100, the first protrusion 620 extends into the first recess 610 and the second protrusion 640 extends into the second recess 630. With this design, there is no need to manually monitor whether the first protrusion 620 extends into the first recess 610 or whether the second protrusion 640 extends into the second recess 630; it is sufficient to move the connector 510 until the limiting surface abuts against the mounting member 100 (where it can no longer move).

[0047] Reference Figures 2-3 , Figure 6 In embodiments of this disclosure, the door 200 may have a first mounting hole (not shown) for the lock cylinder assembly 300 to extend into, and the baffle 410 may have a second mounting hole 411 for the lock cylinder assembly 300 to extend into. This design allows the lock cylinder assembly 300 to pass sequentially through the second mounting hole 411 and the first mounting hole from the outside and be installed onto the inside of the door 200, facilitating installation. The first mounting hole 411 and the second mounting hole may be integrally formed with the corresponding sheet metal, or they may be created later; this disclosure does not impose any limitations on this.

[0048] In embodiments of this disclosure, the door 200 may have a first mounting hole for the lock cylinder assembly 300 to extend into, and the outer contour of the baffle 410 is designed so that the baffle 410 can always be attached to the outer side of the door 200. This design can prevent the baffle 410 from entering the inner side through the first mounting hole when subjected to the pulling force of the lock cylinder assembly 300, thus preventing the baffle 410 from failing. This disclosure does not limit the shape of the first mounting hole and the baffle 410. For example, when both are circular, the diameter of the baffle 410 can be larger than the diameter of the first mounting hole; when the first mounting hole is circular and the baffle 410 is square or irregular in shape, the outer contour of the baffle 410 needs to have a portion with a straight dimension larger than the diameter of the first mounting hole, so as to restrict the baffle 410 from entering the first mounting hole through this portion. In short, the outer contour of the baffle 410 needs to be configured so that it cannot enter the inner side of the door 200 through the first mounting hole.

[0049] According to a second aspect of this disclosure, a vehicle door is provided, including the aforementioned locking mechanism for a vehicle door. Since the vehicle door has all the beneficial effects of the aforementioned locking mechanism for a vehicle door, further details are omitted here.

[0050] According to a third aspect of this disclosure, a vehicle is provided that includes the aforementioned door, since the vehicle has all the beneficial effects of the aforementioned door, which will not be elaborated here.

[0051] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0053] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A locking mechanism for a vehicle door, characterized in that, include: Lock cylinder assembly, installed in the car door; as well as A reinforcing member is provided on the outer side of the vehicle door and is connected to the lock cylinder assembly to prevent the lock cylinder assembly from detaching from the vehicle door. The reinforcing member includes a baffle for attaching to the outer side of the door, and a claw extending into the inner side of the door and connecting the baffle and the lock cylinder assembly. The locking mechanism for the vehicle door also includes a connector that is lockably or detachably connected between the pawl and the lock cylinder assembly. One of the latch and the connector has a plurality of first recesses, and the other has a plurality of first protrusions adapted to the plurality of first recesses; one of the connector and the lock cylinder assembly has a plurality of second recesses, and the other has a plurality of second protrusions adapted to the plurality of second recesses, wherein the connector is movable in a direction parallel to the door, such that the first protrusion extends into the corresponding first recess and the second protrusion extends into the corresponding second recess, or the first protrusion moves out of the corresponding first recess and the second protrusion moves out of the corresponding second recess.

2. The latching mechanism for a vehicle door according to claim 1, characterized by, It also includes a mounting component, which is disposed on the inside of the door, and the lock cylinder assembly is mounted to the door via the mounting component.

3. The latch mechanism for a vehicle door according to claim 1, characterized by, The connector has a threaded hole, and the locking mechanism also includes a locking bolt that mates with the threaded hole. The locking bolt passes through the threaded hole so that when the locking bolt rotates in one direction, it causes the connector to be locked between the pawl and the lock cylinder assembly; and when the locking bolt rotates in another direction, it causes the connector to be disengaged between the pawl and the lock cylinder assembly.

4. The latch mechanism for a vehicle door according to claim 2, characterized by The connector has a limiting surface, which is configured such that when it moves with the connector to abut against the mounting member, the first protrusion extends into the first recess and the second protrusion extends into the second recess.

5. The latching mechanism for a vehicle door according to any one of claims 1, 3-4, characterized in that, The door has a first mounting hole for the lock cylinder assembly to extend into, and the baffle has a second mounting hole for the lock cylinder assembly to extend into.

6. The latching mechanism for a vehicle door according to any one of claims 1, 3-4, characterized in that, It also includes a gasket placed between the baffle and the door.

7. The latching mechanism for a vehicle door according to any one of claims 1, 3-4, characterized in that, The door has a first mounting hole for the lock cylinder assembly to extend into, and the outer contour of the baffle is designed so that the baffle is always attached to the outside of the door.

8. A vehicle door, characterized by Includes the locking mechanism for a vehicle door as described in any one of claims 1-7.

9. A vehicle characterized by comprising: Includes the vehicle door as described in claim 8.