A type of car door latch

By designing the hook and spring structure of the vehicle door latch, the problem of weak locking of the door limiter in bad weather was solved, realizing reliable locking and convenient closing of the door, and improving safety and convenience.

CN224432277UActive Publication Date: 2026-06-30SHANGHAI BIAOSUO CABINET LOCK CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI BIAOSUO CABINET LOCK CO LTD
Filing Date
2025-06-26
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing door limiters have weak locking performance in inclement weather and are prone to closing due to strong winds, posing a safety hazard.

Method used

Design a vehicle door latch that uses a hook structure on the upper and lower housings and a tension spring to reliably lock the door and allows for easy closing by manually moving a stop plate.

Benefits of technology

The locking and limiting performance of the car door has been improved, ensuring that the door is not easy to close by itself in bad weather, making it convenient, reliable and safe to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a vehicle door latch, comprising an upper housing and a lower housing arranged opposite to each other. The upper housing has a first hook, and the lower housing has a rotating plate rotatably mounted thereon. A second hook, corresponding to the position of the first hook, is fixed on the rotating plate. A tension spring is connected to the rotating plate, with its other end connected to the lower housing. The upper and lower housings are respectively fixed to the exterior of the vehicle door and body. The first and second hooks interlock to achieve the opening and locking of the vehicle door. Furthermore, the tension of the spring prevents the second hook from easily rotating and disengaging from the first hook, thus preventing the door from closing automatically due to strong winds. This ensures that the latch has strong locking and limiting performance, making the opening and closing of the vehicle door more reliable and safe.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a door latch for vehicles. Background Technology

[0002] Door limiters are typically installed on the doors of motorhomes or modified vehicles. They are mainly used to limit the degree to which the doors can be opened. On the one hand, they can limit the maximum opening of the doors to prevent them from opening too wide. On the other hand, they can also restrict the doors when they need to be kept open, such as when the vehicle is parked on a slope or when it is windy, so that the doors will not turn and close.

[0003] However, the locking and limiting performance of the door limiters currently on the market is not strong. In severe weather such as strong winds, the door can still be blown shut by the wind, and the hand can be easily pinched when the door closes accidentally. Therefore, the existing door limiters are not reliable in locking the door. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a vehicle door latch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vehicle door latch includes an upper housing and a lower housing arranged opposite to each other. The upper housing is provided with a first hook, and a rotating plate is rotatably mounted on the lower housing. A second hook corresponding to the position of the first hook is fixed on the rotating plate. A tension spring is connected to the rotating plate, and the other end of the tension spring is connected to the lower housing.

[0007] Preferably, a lower base plate is installed on the lower housing, and a card seat is fixed on the lower base plate. The rotating shaft of the rotating plate is rotatably disposed in the card seat, and the rotating plate rotates and drives the second card hook away from the first card hook.

[0008] Preferably, one end of the tension spring is connected to the lower base plate.

[0009] Preferably, the rotating plate is provided with a stop plate extending to the outside of the lower housing.

[0010] Preferably, the surface of the abutment is provided with anti-slip strips.

[0011] Preferably, an upper base plate is mounted on the upper housing.

[0012] The beneficial effects of this utility model are:

[0013] 1. The upper and lower housings are fixed to the external car door and body respectively. The door is opened and locked by hook one and hook two interlocking with each other. The tension of the spring prevents hook two from easily rotating and disengaging from hook one, thus preventing the door from closing by itself due to strong winds. This ensures that the door latch has strong locking and limiting performance, making the opening of the door more reliable and safe.

[0014] 2. By manually moving the stop plate, the rotating plate can overcome the tension of the tension spring and rotate, causing the second hook to rotate and disengage from the first hook. At this time, the door can rotate and close, making the use of the door latch more convenient and reliable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 4 This is a cross-sectional view of the present invention.

[0019] In the diagram: upper shell 1, upper base plate 11, hook 1 12, lower shell 2, lower base plate 21, card seat 211, rotating plate 22, rotating shaft 221, hook 2 23, abutment plate 24, anti-slip strip 241, tension spring 25. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] In the description of this specification, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1-4 As shown, a vehicle door latch includes an upper housing 1 and a lower housing 2 arranged opposite to each other. The upper housing 1 and the lower housing 2 are respectively fixed to the external vehicle door and the vehicle body. Specifically, an upper base plate 11 is installed on the upper housing 1, and a lower base plate 21 is installed on the lower housing 2. The upper base plate 11 and the lower base plate 21 can be correspondingly glued and fixed to the vehicle door and the vehicle body.

[0023] The upper housing 1 is provided with a first hook 12, and the lower housing 2 is rotatably mounted with a rotating plate 22. The rotating plate 22 is fixed with a second hook 23 corresponding to the position of the first hook 12. The second hook 23 is located at one end of the rotating plate 22, and the first hook 12 and the second hook 23 can be fixed relative to each other.

[0024] A tension spring 25 is connected to the rotating plate 22, and the other end of the tension spring 25 is connected to the lower housing 2. Specifically, a card seat 211 is fixed on the lower base plate 21, and the rotating shaft 221 of the rotating plate 22 is rotatably disposed in the card seat 211. One end of the tension spring 25 is connected to the lower base plate 21, and the other end of the tension spring 25 is connected to one side of the rotating plate 22.

[0025] By rotating the car door, the first hook 12 is driven to rotate and engage with the second hook 23, thereby opening and locking the car door. The tension of the tension spring 25 prevents the second hook 23 from easily rotating and disengaging from the first hook 12, thus ensuring the reliability of opening the car door in this embodiment. This prevents the car door from closing on its own due to strong winds, ensuring that this embodiment has strong locking and limiting performance, making the opening of the car door more reliable and safe.

[0026] The rotating plate 22 is provided with a stop plate 24 extending to the outside of the lower housing 2. The stop plate 24 is located at the other end of the rotating plate 22. By manually moving the stop plate 24, the rotating plate 22 rotates and drives the second hook 23 away from the first hook 12. That is, by moving the stop plate 24 (see reference) Figure 4 As shown, by pushing the abutment plate 24 upward, the rotating plate 22 is driven to rotate counterclockwise, so that the rotating plate 22 can overcome the tension of the tension spring 25 and rotate, and the second hook 23 rotates to disengage from the first hook 12. At this time, the car door can rotate and close, thus making the use of this embodiment more convenient and reliable.

[0027] The surface of the abutment 24 is provided with anti-slip strips 241, so that the abutment 24 can be moved more conveniently through the anti-slip strips 241.

[0028] Furthermore, the structure of this embodiment is simple, easy to install and disassemble, and convenient to use. At the same time, the hook connection between hook 12 and hook 23 is stable and reliable, making it suitable for widespread use.

[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. A vehicle door latch, comprising an upper housing (1) and a lower housing (2) disposed opposite to each other, characterized in that: The upper housing (1) is provided with a hook one (12), and the lower housing (2) is rotatably mounted with a rotating plate (22). The rotating plate (22) is fixed with a hook two (23) corresponding to the position of the hook one (12). The rotating plate (22) is connected with a tension spring (25), and the other end of the tension spring (25) is connected to the lower housing (2).

2. The vehicle door latch as described in claim 1, characterized in that: The lower housing (2) is equipped with a lower base plate (21), and a card seat (211) is fixed on the lower base plate (21). The rotating shaft (221) of the rotating plate (22) is rotatably disposed in the card seat (211). The rotating plate (22) rotates and drives the second card hook (23) away from the first card hook (12).

3. A vehicle door latch as described in claim 2, characterized in that: One end of the tension spring (25) is connected to the lower base plate (21).

4. A vehicle door latch as described in claim 1, characterized in that: The rotating plate (22) is provided with a stop plate (24) extending to the outside of the lower housing (2).

5. A vehicle door latch as described in claim 4, characterized in that: The surface of the abutment (24) is provided with anti-slip strips (241).

6. A vehicle door latch as described in claim 1, characterized in that: An upper base plate (11) is installed on the upper housing (1).