A door lock mechanism for a vehicle
Patent Information
- Application Number
- CN202522312115.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0002]在车辆防护用具技术领域，汽车门锁机构作为保障车门闭合安全与使用可靠性的核心部件，其锁止稳定性与防误开性能直接影响车辆使用安全，然而，现有汽车门锁机构普遍存在锁止结构设计单一的问题，多数仅通过单一锁止件与外部凵型锁配合实现基础锁止，缺乏二次加固锁止机制，当人员误拉动车门内外侧的解锁钢丝时，极易导致锁止状态意外解除，进而引发误开门的安全风险；
1、本实用新型通过电动锁止组件与锁定块、扭簧的配合，实现门锁的双重稳固锁止与防误开功能；不仅能在关门后通过微型电机驱动第二锥齿轮转动，啮合带动第一锥齿轮同步旋转，进而使丝杆通过螺纹传动带动卡接台上移，嵌合锁定块的卡槽对其二次卡死，避免误拉钢丝导致开门；还能借助扭簧在关门时的形变蓄力，配合锁定板与卡槽形成的单向自锁结构，确保锁定块对外部凵型锁的稳定夹持，防止车门行驶中意外松动；且电动锁止组件通过电路板与车辆中控系统联动，指令响应迅速，进一步强化门锁锁止可靠性，满足汽车对门锁安全防误开的核心需求。
Smart Images
Figure CN224770001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle protection equipment technology, and in particular to an automobile door lock mechanism. Background Technology
[0002] In the field of vehicle protection equipment technology, the car door lock mechanism is a core component that ensures the safety and reliability of door closure. Its locking stability and anti-accidental opening performance directly affect the safety of vehicle use. However, existing car door lock mechanisms generally have the problem of simple locking structure design. Most of them only use a single locking component to cooperate with an external U-shaped lock to achieve basic locking, lacking a secondary reinforcement locking mechanism. When a person accidentally pulls the unlocking wire on the inside or outside of the car door, it is very easy to cause the locking state to be accidentally released, thus causing the safety risk of accidentally opening the door. Meanwhile, the design of the elastic component used to assist the locking block reset in the existing mechanism is not reasonable enough in its cooperation with the locking block and the abutment plate, making it difficult to form a stable one-way self-locking structure. During vehicle operation, the clamping force between the locking block and the external U-lock is easily weakened due to factors such as road bumps and vehicle body vibration, causing the locking block to loosen and failing to continuously and stably lock the door. This poses a safety hazard of the door being accidentally opened while driving. In addition, some door lock mechanisms with electric locking functions have poor compatibility between their electric components and the vehicle's central control system, resulting in a significant delay in command response. Furthermore, they lack a design to achieve secondary locking of the locking block through electric drive, making it impossible to quickly and reliably strengthen the locking effect. This results in insufficient overall locking reliability of the door lock, making it difficult to meet the core usage requirements of automobiles for door lock security and preventing accidental opening. Therefore, the above problems need to be solved. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a car door lock mechanism.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: an automotive door lock mechanism, comprising a mounting box, wherein a slot is provided on the top surface of the mounting box, and the center of the slot is the center point of the overall structure, and a positioning platform is installed in the center of the bottom surface of the mounting box; a first abutment plate with its top surface inclined towards the center point is fixedly connected to the front and rear ends of both sides of the upper part of the mounting box cavity, and a circular locking block is rotatably connected to both sides of the upper part of the mounting box cavity; a plurality of equidistant slots are provided on the outer side of the locking block, and an arc-shaped locking groove is provided above the near ends of two locking blocks; an electric locking assembly is installed in the mounting box, and a tension unlocking assembly and a paddle locking assembly are installed in the positioning platform.
[0005] Preferably, a second abutment plate with its lower end inclined toward the center point is fixedly connected to the front and rear ends of the two locking blocks, and a torsion spring is sleeved on the central axis of the front and rear ends of the locking blocks, with the two ends of the torsion spring abutting against the first abutment plate and the second abutment plate respectively.
[0006] Preferably, the electric locking assembly includes a positioning plate longitudinally fixed to both sides inside the mounting box. The positioning plate has a first threaded hole in the middle, and a lead screw is threadedly connected to the positioning plate through the threaded hole. A first bevel gear is fixedly connected to the lower end of the lead screw. The two first bevel gears are meshed with second bevel gears at their distal ends. The two second bevel gears are connected to a micro motor at their distal ends through a coupling. The micro motor is installed on the bottom surface inside the mounting box.
[0007] Preferably, the positioning plate has lifting grooves at both the front and rear ends of its longitudinal axis, and a U-shaped locking platform is installed between the two lifting grooves. A second threaded hole is provided in the middle of the lower end of the locking platform, and the lead screw is threadedly connected to the locking platform through the second threaded hole.
[0008] Preferably, the tension unlocking assembly includes a through hole in the middle of the positioning platform, a first locking groove in the middle of the through hole, a spring fixedly connected to the top surface of the positioning platform, a locking plate fixedly connected to the top surface of the spring, a main steel wire slidably connected inside the through hole of the positioning platform, the upper end of the main steel wire being fixedly connected to the locking plate, and a triangular connecting platform connected to the lower end of the main steel wire, an outer steel wire connected to one side of the triangular connecting platform, and an inner steel wire connected to the other side of the triangular connecting platform, and the paddle locking assembly being located in the first locking groove.
[0009] Preferably, the paddle locking assembly includes a second locking groove formed at the center of the front end of the positioning platform, the second locking groove communicating with the first locking groove, a rotating disk rotatably connected to the center of the first locking groove, a connecting hole formed in the center of the rotating disk, the diameter of the connecting hole being larger than the diameter of the main steel wire, and a plurality of equidistant arc-shaped grooves formed on the top surface of the rotating disk; a plurality of equidistant teeth are installed on the outer side of the rotating disk, a vertical locking plate is slidably connected in the arc-shaped groove, a rotating column is installed in the center of the second locking groove, and a rotating block centered on the rotating column is rotatably connected in the second locking groove, a tooth groove with matching teeth is formed at the rear end of the rotating block, and a reserved groove is formed at the front end of the rotating block.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves dual stable locking and anti-accidental opening functions for the door lock through the cooperation of the electric locking component, locking block, and torsion spring. Not only does it drive the second bevel gear to rotate via a micro motor after the door is closed, meshing with and synchronously rotating the first bevel gear, which in turn causes the lead screw to move upwards via threaded transmission, locking the locking block in its slot for a second time, preventing accidental opening due to pulling the steel wire; it also utilizes the deformation of the torsion spring during door closing to store force, combined with the one-way self-locking structure formed by the locking plate and the slot, ensuring stable clamping of the locking block on the external U-shaped lock and preventing accidental loosening of the door during driving. Furthermore, the electric locking component is linked to the vehicle's central control system via a circuit board, providing rapid command response and further enhancing the door lock's reliability, meeting the core requirements of automobiles for door lock security and anti-accidental opening.
[0011] 2. This utility model device achieves flexible unlocking and emergency locking switching of the door lock through the cooperation between the tension unlocking component and the inner steel wire, outer steel wire, and paddle locking component. In the tension unlocking component, the triangular connecting platform connects the outer steel wire and the inner steel wire respectively. Pulling any steel wire will cause the main steel wire to move down, causing the locking plate to disengage from the slot and release the self-locking, making it convenient for people inside and outside the vehicle to quickly open the door. The paddle locking component can drive the rotating block to rotate through the external locking paddle, which in turn drives the rotating disk to rotate, causing the locking plate to slide in the arc groove and clamp the main steel wire, realizing manual emergency locking, which is suitable for scenarios of power failure or electric component failure. The two unlocking and locking methods complement each other, avoiding the failure of the door lock due to the failure of a single component, and improving the flexibility and emergency adaptability of the door lock. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the spring box locking plate structure proposed in this utility model; Figure 3 This is a partial sectional view of the overall structure proposed in this utility model; Figure 4 The present utility model proposes Figure 2 Enlarged diagram of part A in the middle; Figure 5 The present utility model proposes Figure 3 Enlarged schematic diagram of part B in the middle.
[0013] The numbers in the diagram are: 1. Mounting box; 2. Positioning platform; 3. First abutment plate; 4. Locking block; 5. Second abutment plate; 6. Torsion spring; 7. Slot; 8. Positioning plate; 9. Lead screw; 10. First bevel gear; 11. Snap-fit platform; 12. Second bevel gear; 13. Micro motor; 14. Spring; 15. Locking plate; 16. Rotating disk; 17. Locking plate; 18. Rotating block; 19. Main steel wire; 20. Triangular connecting platform; 21. Outer steel wire; 22. Inner steel wire. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] Example: See Figures 1 to 5This utility model discloses an automotive door lock mechanism, including a mounting box 1. The top surface of the mounting box 1 has a slot, facilitating the installation of an electric locking component and subsequent components. A circuit board is bolted to the outside of the mounting box 1, facilitating future connection with the vehicle's central control system. A positioning platform 2 is installed at the center of the bottom surface of the mounting box 1, with the center of the slot as the overall structure center point. The positioning platform 2 facilitates the installation of a telescopic unlocking component and a paddle locking component. First abutment plates 3, with their top surfaces inclined towards the center point, are fixed to the upper sides of the mounting box 1's inner cavity at both ends. The first abutment plates 3 facilitate the installation of a torsion spring 6 in conjunction with a second abutment plate 5. The upper sides of the mounting box 1's inner cavity also have... Each side is rotatably connected to a circular locking block 4, which facilitates locking the external U-shaped lock. Multiple equidistant slots 7 are formed on the outer side of the locking block 4, allowing it to engage with the external locking plate 15 for locking. An arc-shaped locking groove is formed above the adjacent ends of the two locking blocks 4. An electric locking assembly is installed inside the mounting box 1, and a tension unlocking assembly and a paddle locking assembly are installed inside the positioning platform 2. A second abutment plate 5, with its lower end inclined towards the center point, is fixed to the front and rear ends of the two locking blocks 4, facilitating the installation of a torsion spring 6 in conjunction with the first abutment plate 3. A torsion spring 6 is sleeved on the central axis of both the front and rear ends of the locking blocks 4, with both ends of the torsion spring 6 engaging with the first abutment plate 15. Plate 3 and the second abutting plate 5 abut against each other, and the torsion spring 6 facilitates the reset driving force for the locking block 4 during the subsequent unlocking process; the electric locking assembly includes a positioning plate 8 longitudinally fixed to both sides inside the mounting box 1, through which the positioning plate 8 facilitates the threaded connection of the lead screw 9 and the sliding connection of the locking platform 11; the positioning plate 8 has a first threaded hole in the middle, and the positioning plate 8 is threadedly connected to the lead screw 9 through the threaded hole, through which the lead screw 9 facilitates the connection of the first bevel gear 10 by welding process and the threaded connection of the locking platform 11; the lower end of the lead screw 9 is fixedly connected to the first bevel gear 10, through which the first bevel gear 10 facilitates the receiving of the transmission power of the second bevel gear 12 and thus drives the lead screw 9 to rotate; the two first bevel gears 10 are at their distal ends The first bevel gear 11 is connected to the second bevel gear 12, which facilitates the transmission of the driving force of the micro motor 13 to the first bevel gear 11. The two second bevel gears 12 are connected to the micro motor 13 at their far ends via couplings. The micro motor 13 is installed on the bottom surface of the mounting box 1, and it is convenient to connect to and drive the second bevel gear 12 via the couplings. The positioning plate 8 has lifting grooves at both the front and rear ends of its longitudinal axis. A U-shaped locking platform 11 is installed between the two lifting grooves. A second threaded hole is opened in the middle of the lower end of the locking platform 11. The lead screw 9 is threadedly connected to the locking platform 11 through the second threaded hole. The locking platform 11 facilitates the locking of the locking groove 7 and the locking block 4.
[0016] In this utility model, the tension unlocking assembly includes a through hole in the middle of the positioning platform 2, a first locking groove in the middle of the through hole, a spring 14 fixedly connected to the top surface of the positioning platform 2, the spring 14 facilitating the provision of a driving force for the locking plate 15 to return to its original position; the locking plate 15 is fixedly connected to the top surface of the spring 14, the locking plate 15 facilitating the formation of a one-way self-locking structure between the slot 7 and the locking block 4; and a main steel wire 19 is slidably connected inside the through hole of the positioning platform 2, the main steel wire 19 facilitating the driving of the locking plate 15 to move downwards to lock the block. 4. Unlocking: The upper end of the main steel wire 19 is fixedly connected to the locking plate 15, and the lower end of the main steel wire 19 is connected to a triangular connecting platform 20, which facilitates connection to the outer steel wire 21 and the inner steel wire 22; one side of the triangular connecting platform 20 is connected to the outer steel wire 21, which facilitates connection to the external door handle; and the other side of the triangular connecting platform 20 is connected to the inner steel wire 22, which facilitates connection to the internal door handle; the paddle locking assembly is located in the first locking groove, and the paddle locking assembly includes... A second locking groove is formed in the middle of the front end of the positioning platform 2. The second locking groove is connected to the first locking groove. A rotating disk 16 is rotatably connected to the middle of the first locking groove. A connecting hole is formed in the middle of the rotating disk 16, which facilitates the connection of the locking plate 17 with the arc-shaped groove. The diameter of the connecting hole is larger than the diameter of the main steel wire 19, and multiple equally spaced arc-shaped grooves are formed on the top surface of the rotating disk 16. Multiple equally spaced teeth are installed on the outer side of the rotating disk 16, and a vertical locking plate 17 is slidably connected in the arc-shaped groove. 17 facilitates the clamping of the main steel wire 19 with the rotating disk 16; a rotating column is installed in the middle of the second locking groove, and a rotating block 18 centered on the rotating column is rotatably connected in the second locking groove. The rear end of the rotating block 18 is provided with a toothed groove for matching teeth, and the front end of the rotating block 18 is provided with a reserved groove. The rotating block 18 facilitates the connection between the external wire of the reserved groove box and the external manual locking lever. The movement of the manual locking lever drives the rotating block 18 to rotate, thereby driving the rotating disk 16 to rotate.
[0017] Working principle: In use, the mounting box 1 and its internal components are installed inside the car door frame. The outer steel wire 21, separated by the triangular connecting platform 20, is connected to the external door handle, and the inner steel wire 22 is connected to the internal door handle. Finally, the reserved slot in the rotating block 18 is connected to the external locking lever via an external wire. The external circuit board is then connected to the vehicle. The vehicle is then started, energizing the product via the circuit board. The car door is closed, and during this closing process, the two locking blocks 4 on the top surface contact the external U-lock. The U-lock impacts the locking blocks 4, causing them to rotate. During this process, the torsion spring 6 installed between the first abutment plate 3 and the second abutment plate 5 is compressed, and simultaneously, the slot 7 rotates... During the process, the locking plate 15 will be impacted, causing it to move downward against the spring 14. As the locking plate 15 moves downward against the spring 14, both ends of the locking plate 15 are also engaged in different slots 7 (equivalent to a ratchet and pawl one-way self-locking structure). When the upper end of the external U-shaped lock is completely locked by the two locking blocks 4, the locking plate 15 is also placed in the locking slot opened by the locking block 4 to prevent the locking block 4 from rotating. When it is necessary to open the door, simply pull the outer steel wire 21 or the inner steel wire 22 to drive the main steel wire 19, which in turn drives the locking plate 15 to move downward against the spring 14 and drives the two locking blocks 4 to rotate. When the locking plate 15 continues to move downward, and the toothed slots 7 opened by the locking block 4 are no longer engaged with the locking plate 15, the locking block 4 will be reset under the action of the torsion spring 6 to open the door. After the car door is closed, to prevent accidental opening, the locking block on the door can be clicked. Clicking the locking block sends a signal to the circuit board, activating the micro motor 13. The micro motor 13 drives the second bevel gear 12 to rotate, which in turn drives the first bevel gear 10. The rotation of the first bevel gear 10 drives the lead screw 9. Since the lead screw 9 is threadedly connected to the locking platform 11, its rotation causes the locking platform 11 to move upwards and engage in the slot 7, locking the locking block 4 and preventing the main steel wire 19 from pulling the locking plate 15, thus preventing accidental opening of the door. Alternatively, the door can be locked using an external locking lever. Moving the external locking lever rotates the wire, which in turn rotates the rotating block 18. The rotation of the rotating block 18 rotates the rotating disk 16, which in turn locks the locking plate 17, clamping the main steel wire 19, achieving the same effect as the electric locking described above.
[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A car door lock mechanism, comprising a mounting box (1), characterized in that: The mounting box (1) has a slot on its top surface, with the center of the slot as the center point of the overall structure, and a positioning platform (2) is installed in the center of the bottom surface of the mounting box (1); the front and rear ends of the upper sides of the inner cavity of the mounting box (1) are fixedly connected to a first abutment plate (3) with the top surface inclined towards the center point, and the upper sides of the inner cavity of the mounting box (1) are rotatably connected to a circular locking block (4), the outer side of the locking block (4) has multiple equidistant slots (7), and the upper ends of two locking blocks (4) have an arc-shaped locking groove, the mounting box (1) is equipped with an electric locking assembly, and the positioning platform (2) is equipped with a tension unlocking assembly and a paddle locking assembly.
2. The automobile door lock mechanism according to claim 1, characterized in that: The two locking blocks (4) are fixed with a second abutment plate (5) with its lower end inclined toward the center point at the front and back ends respectively, and a torsion spring (6) is sleeved on the central axis of the front and rear ends of the locking blocks (4). The two ends of the torsion spring (6) abut against the first abutment plate (3) and the second abutment plate (5) respectively.
3. The automobile door lock mechanism according to claim 1, characterized in that: The electric locking assembly includes a positioning plate (8) that is longitudinally fixed to both sides inside the mounting box (1). The positioning plate (8) has a first threaded hole in the middle and a lead screw (9) is threadedly connected to the positioning plate (8) through the threaded hole. A first bevel gear (10) is fixedly connected to the lower end of the lead screw (9). The two first bevel gears (10) are meshed with a second bevel gear (12) at their distal ends. The two second bevel gears (12) are connected to a micro motor (13) at their distal ends through a coupling. The micro motor (13) is installed on the bottom surface inside the mounting box (1).
4. The automobile door lock mechanism according to claim 3, characterized in that: The positioning plate (8) has lifting grooves at both the front and rear ends of its longitudinal axis. A U-shaped locking platform (11) is installed between the two lifting grooves. A second threaded hole is provided at the lower center of the locking platform (11). The lead screw (9) is threadedly connected to the locking platform (11) through the second threaded hole.
5. The automobile door lock mechanism according to claim 1, characterized in that: The tension unlocking assembly includes a through hole in the middle of the positioning platform (2), a first locking groove in the middle of the through hole, a spring (14) fixed to the top surface of the positioning platform (2), a locking plate (15) fixed to the top surface of the spring (14), a main steel wire (19) slidably connected in the through hole of the positioning platform (2), the upper end of the main steel wire (19) fixed to the locking plate (15), and the lower end of the main steel wire (19) connected to a triangular connecting platform (20), an outer steel wire (21) connected to one side of the triangular connecting platform (20), and an inner steel wire (22) connected to the other side of the triangular connecting platform (20). The paddle locking assembly is located in the first locking groove.
6. The automobile door lock mechanism according to claim 5, characterized in that: The paddle locking assembly includes a second locking groove located at the center of the front end of the positioning platform (2). The second locking groove is connected to the first locking groove. A rotating disk (16) is rotatably connected to the center of the first locking groove. A connecting hole is provided in the center of the rotating disk (16). The diameter of the connecting hole is larger than the diameter of the main steel wire (19). Multiple equidistant arc-shaped grooves are provided on the top surface of the rotating disk (16). Multiple equidistant teeth are installed on the outer side of the rotating disk (16). A vertical locking plate (17) is slidably connected in the arc-shaped groove. A rotating column is installed in the center of the second locking groove. A rotating block (18) centered on the rotating column is rotatably connected in the second locking groove. A tooth groove with matching teeth is provided at the rear end of the rotating block (18). A reserved groove is provided at the front end of the rotating block (18).