A vehicle door lock
By designing a car door lock with multiple unlocking methods, the problem of not being able to unlock from inside the passenger compartment or trunk in existing technologies has been solved, achieving a highly secure and convenient internal unlocking function and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU HUIFU METAL PROD CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
The existing door locks are mechanically unlocked from the outside of the door, making it impossible to unlock them from inside the passenger compartment or luggage compartment, which poses a security risk.
Design a car door lock with multiple unlocking methods, including remote control, key and pull rope operation, which can be unlocked from the inside of the door and achieves internal unlocking through electromagnet and moving mechanism.
It improves the security and convenience of car door locks, allowing users to unlock them in multiple ways from inside the car or trunk, enhancing both the user experience and security.
Smart Images

Figure CN224452488U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lock technology, and in particular to a car door lock. Background Technology
[0002] In the current market, pickup trucks often require locks for their rear cargo beds, passenger luggage compartments, and some engine compartment doors to ensure safety and extend their lifespan. However, most locks on the market use traditional mechanical locks, meaning they are typically designed for external mechanical unlocking. While this meets basic locking needs to some extent, it poses a significant safety hazard if someone is accidentally trapped inside the cargo bed or luggage compartment. Therefore, a new type of door lock is needed to address these issues. Utility Model Content
[0003] The purpose of this utility model is to provide a car door lock that aims to solve the above-mentioned technical problems. This utility model has multiple unlocking methods, can be operated flexibly, and has the function of unlocking from the inside of the door. It is highly secure, easy to use, can meet multiple user needs, improve user experience, and is highly practical.
[0004] To achieve the above objectives, this utility model employs the following technical solution:
[0005] A car door lock includes a handle, a base, a protective shell, a connecting component, a control component, a lock cylinder, a sliding bolt, a movable mechanism, and a pull cord. One end of the base is connected to the protective shell, and the control component and the movable mechanism are both fixed to the other end of the base. The base has a handle mounting position, and the handle is movably mounted in the handle mounting position. The handle has a lock cylinder mounting hole, and the lock cylinder is disposed in the lock cylinder mounting hole. The lock cylinder has a limiting part, and the limiting part is movably connected to the sliding bolt.
[0006] The control component includes an elastic block, a fixed shell, a PCB board and an electromagnet installed in the fixed shell. The PCB board is provided with a pressure sensing component. One end of the elastic block is in contact with the handle, and the other end of the elastic block is in contact with the pressure sensing component. The electromagnet is electrically connected to the PCB board and is provided with a magnetic shaft.
[0007] One end of the sliding tongue is in contact with the magnet shaft, and the other end of the sliding tongue is in contact with and connected to the movable mechanism.
[0008] Furthermore, the movable mechanism includes a fixed base, a movable connecting base, a first spring, and a second spring. The fixed base has a movable groove, and one end of the movable connecting base is movably installed in the movable groove. Both the first spring and the second spring are connected to the movable connecting base.
[0009] Furthermore, one end of the movable connecting seat is provided with a movable part, which is movably installed in the movable groove. The first spring and the second spring are both connected to the movable part. The other end of the movable connecting seat is provided with a movable abutting post, the upper end of which is movably abutting against the lower end of the sliding tongue.
[0010] Furthermore, the movable mechanism also includes a rotating torsion spring, a rotating connector, and a rotating paddle. One end of the rotating connector is connected to the rotating paddle, and the other end of the rotating connector passes through the fixed base and the moving part and is connected to the rotating torsion spring.
[0011] Furthermore, one side of the rotating connector is provided with a rotating part, which is convex in shape and can movably abut against the moving part.
[0012] Furthermore, the sliding tongue is provided with a horizontal recess, a vertical recess, and a spring mounting position. A third spring is installed on the spring mounting position. The upper end of the vertical recess is connected to the horizontal recess, and the lower end of the vertical recess is open downwards. The limiting part can move within the horizontal recess and the vertical recess.
[0013] Furthermore, the handle is also provided with an upper through hole and a lower through hole, which are connected to the lock cylinder mounting hole. The magnet shaft of the electromagnet can pass through the upper through hole and abut against the sliding tongue, and the lower end of the sliding tongue can pass through the lower through hole and abut against the movable abutting post.
[0014] Furthermore, the connecting assembly includes a left swing arm, a right swing arm, and a swing arm torsion spring. The left swing arm and the right swing arm are plugged together. The front ends of the left swing arm and the front ends of the right swing arm are connected to form a swing arm pivot. The swing arm pivot is movably connected to the base and the handle. The swing arm torsion spring is disposed on the swing arm pivot.
[0015] Furthermore, the other end of the right swing arm is provided with a connecting end.
[0016] Furthermore, it also includes a protective base, which is connected to the protective shell.
[0017] This utility model of car door lock has the following beneficial effects:
[0018] 1. High security: This utility model has the function of unlocking from inside the carriage, that is, it is equipped with a movable mechanism, mainly to prevent people from being accidentally trapped in the carriage or luggage compartment: the pull rope installed on the rotating lever is led to the carriage or luggage compartment. If someone is accidentally trapped in the carriage or luggage compartment, they can pull the pull rope, which will pull the rotating lever of the internal movable mechanism, thus realizing the unlocking function from the inside and improving the safety of use.
[0019] 2. Multiple unlocking methods: This utility model's car door lock offers the following three unlocking methods:
[0020] 1) Unlocking with a remote control: The PCB board receives the unlocking signal and decodes the managed lock. Then, pressing the handle by hand energizes the pressure sensing component to the electromagnet, causing the electromagnet's magnetic shaft to retract and unlock.
[0021] 2) Turn the lock cylinder with the key. The limiting part of the lock cylinder rotates, causing the sliding tongue to extend upward, thereby pushing the magnet axis of the electromagnet upward to unlock the lock.
[0022] 3) Rotate the latch on the back. The latch drives the movable mechanism to move. The movement of the movable mechanism drives the sliding tongue to move upward, thereby pushing the magnet axis of the electromagnet upward to unlock it.
[0023] This utility model has multiple unlocking methods, allowing for flexible operation. It also features an unlocking function from inside the compartment door, providing high security and ease of use. It can meet multiple user needs, enhance user experience, and is highly practical. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;
[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;
[0026] Figure 3 This is a breakdown diagram of the structure of this utility model without the pull rope. Figure 1 ;
[0027] Figure 4 This is a breakdown diagram of the structure of this utility model without the pull rope. Figure 2 ;
[0028] Figure 5 This is a schematic cross-sectional view of the present invention without a pull rope.
[0029] Figure 6 for Figure 5 The diagram shown is a structural schematic without the base and protective shell.
[0030] Figure 7 for Figure 6 The diagram shows the structure of the control components, lock cylinder, sliding tongue, and moving mechanism.
[0031] Figure 8 for Figure 6 The diagram shown is an exploded view of the sliding tongue and the moving mechanism.
[0032] The numbers on the map are:
[0033] 1. Handle; 2. Base; 3. Protective shell; 4. Connecting assembly; 5. Lock cylinder; 6. Slip tongue; 7. Movable mechanism; 8. Pull cord; 9. Handle mounting position; 10. Lock cylinder mounting hole; 11. Limiting part; 12. Elastic block; 13. Fixing shell; 14. PCB board; 15. Electromagnet; 16. Pressure sensing component; 17. Magnet shaft; 18. Fixing base; 19. Movable connecting base; 20. First spring; 21. Movable groove; 2 2. Moving part; 23. Movable abutment post; 24. Rotating torsion spring; 25. Rotating connector; 26. Rotating lever; 27. Pushing part; 28. Rotating part; 29. Horizontal recess; 30. Vertical recess; 31. Third spring; 32. Left swing arm; 33. Right swing arm; 34. Swing arm torsion spring; 35. Swing arm pivot; 36. Connecting end; 37. Protective seat; 38. Power plug; 39. Indicator light; 40. Elastic block support post. Detailed Implementation
[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the product of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings.
[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0037] like Figures 1 to 4 As shown, a car door lock includes a handle 1, a base 2, a protective shell 3, a connecting component 4, a control component, a lock cylinder 5, a sliding tongue 6, a movable mechanism 7, and a pull cord 8. One end of the base 2 is connected to the protective shell 3, and the control component and the movable mechanism 7 are both fixed to the other end of the base 2. The base 2 has a handle mounting position 9, and the handle 1 is movably mounted in the handle mounting position 9. The handle 1 has a lock cylinder mounting hole 10, and the lock cylinder 5 is disposed in the lock cylinder mounting hole 10. The lock cylinder 5 has a limiting part 11, and the limiting part 11 is movably connected to the sliding tongue 6.
[0038] The control assembly includes an elastic block 12, a fixed shell 13, a PCB board 14 and an electromagnet 15 installed in the fixed shell 13. The PCB board 14 is provided with a pressure sensing component 16. One end of the elastic block 12 is in contact with the handle 1, and the other end of the elastic block 12 is in contact with the pressure sensing component 16. The electromagnet 15 is electrically connected to the PCB board 14, and the electromagnet 15 is provided with a magnetic shaft 17.
[0039] One end of the sliding tongue 6 is in movable contact with the magnet shaft 17, and the other end of the sliding tongue 6 is in contact with and connected to the movable mechanism 7;
[0040] One end of the connecting component 4 is connected to the handle 1 and the base 2, and the other end of the connecting component 4 is connected to the door panel.
[0041] It should be noted that the unlocking methods of this utility model include the following three:
[0042] 1) When unlocking with the remote control, the PCB board 14 receives the unlocking signal and decodes the managed lock. Then, the handle 1 is pressed by hand, and the elastic block 12 transmits the pressure to the pressure sensing component 16. The pressure sensing component 16 energizes the electromagnet 15, and the magnet shaft 17 of the electromagnet 15 retracts. The magnet shaft 17 leaves the sliding tongue 6, and the handle 1 rotates outward from the base 2 with the cooperation of the connecting component 4, so that the other end of the connecting component 4 is separated from the door panel, thus unlocking. When it is necessary to lock, press the handle 1 inward to lock.
[0043] 2) Turn the lock cylinder 5 with the key. The limiting part 11 of the lock cylinder 5 rotates, causing the sliding tongue 6 to move upward, thereby pushing the magnet shaft 17 of the electromagnet 15 upward back. The magnet shaft 17 leaves the sliding tongue 6, and the handle 1 rotates outward from the base 2 with the cooperation of the connecting component 4, so that the other end of the connecting component 4 is separated from the door panel, thus unlocking the door.
[0044] 3) Rotate the rear movable mechanism 7. The movement of the movable mechanism 7 drives the sliding tongue 6 to move upward, thereby pushing the abutment axis of the electromagnet 15 upward. The magnet shaft 17 leaves the sliding tongue 6, and the handle 1 rotates outward from the base 2 with the cooperation of the connecting component 4, so that the other end of the connecting component 4 is separated from the door panel, thus unlocking. When it is necessary to lock, press the handle 1 inward to lock.
[0045] It should be further noted that the electromagnet 15 in this embodiment can be a pull electromagnet 15 or a push electromagnet 15. The magnet shaft 17 on the electromagnet 15 is retractable. This structure is existing technology and will not be described in detail. The pressure sensing component 16 in this embodiment can be a micro switch or other common pressure sensing components 16. The elastic block 12 in this embodiment can be made of rubber.
[0046] like Figure 7 and Figure 8As shown, the movable mechanism 7 includes a fixed base 18, a movable connecting base 19, a first spring 20, and a second spring. The fixed base 18 has a movable groove 21, and one end of the movable connecting base 19 is movably installed in the movable groove 21. Both the first spring 20 and the second spring are connected to the movable connecting base 19. The first spring 20 and the second spring are both installed between the base 2 and the movable connecting base 19, providing elasticity and cushioning.
[0047] like Figure 7 and Figure 8 As shown, one end of the movable connecting seat 19 is provided with a movable part 22, which is movably installed in the movable groove 21. The first spring 20 and the second spring are both connected to the movable part 22. The other end of the movable connecting seat 19 is provided with a movable abutting post 23, the upper end of which is movably abutting against the lower end of the sliding tongue 6.
[0048] like Figure 7 and Figure 8 As shown, the movable mechanism 7 also includes a rotating torsion spring 24, a rotating connector 25, and a rotating paddle 26. One end of the rotating connector 25 is connected to the rotating paddle 26, and the other end of the rotating connector 25 passes through the fixed base 18 and the moving part 22 and is connected to the rotating torsion spring 24. The rotating paddle 26 is provided with a pull rope hole 8 for connecting a pull rope 8.
[0049] It should be noted that this utility model has the function of unlocking from inside the carriage, that is, the movable mechanism 7 is set up, mainly to prevent people from being accidentally trapped in the carriage or luggage compartment: the pull rope 8 installed on the rotating lever 26 is led into the carriage or luggage compartment. If someone is accidentally trapped in the carriage or luggage compartment, they can pull the pull rope 8, which will pull the rotating lever 26 of the internal movable mechanism 7, and thus realize the unlocking function from the inside, which is highly safe.
[0050] like Figure 7 and Figure 8 As shown, the movable connecting seat 19 is provided with a pushing part 27, and the rotating connecting member 25 is provided with a rotating part 28 on one side. The rotating part 28 is convex in shape and can move and abut against the pushing part 27.
[0051] It should be noted that when the pull cord 8 pulls the rotating lever 26, the rotating part 28 drives the rotating connector 25 to rotate. The protruding rotating part 28 of the rotating connector 25 pushes upward against the movable connecting seat 19, causing the moving part 22 to move upward along the movable groove 21 and the movable abutting post 23 to move upward, thereby driving the sliding tongue 6 to move upward, thereby pushing the abutting axis of the electromagnet 15 upward, causing the magnet shaft 17 to leave the sliding tongue 6. With the cooperation of the connecting component 4, the handle 1 rotates outward from the base 2, causing the other end of the connecting component 4 to detach from the door panel, thus unlocking the door.
[0052] It should be further explained that the sliding tongue 6 in this embodiment is limited and installed on the lock cylinder mounting hole 10, and will not detach from the handle 1.
[0053] like Figure 7 and Figure 8 As shown, the sliding tongue 6 is provided with a horizontal recess 29, a vertical recess 30 and a spring mounting position. A third spring 31 is installed on the spring mounting position. The upper end of the vertical recess 30 is connected to the horizontal recess 29. The lower end of the vertical recess 30 is opened downwards. The limiting part 11 can move within the horizontal recess 29 and the vertical recess 30.
[0054] It should be noted that when the lock cylinder 5 is turned with the key, the limiting part 11 rotates and moves along the transverse recess 29, causing the sliding tongue 6 to move upward, thereby pushing the abutting axis of the electromagnet 15 upward, causing the magnet shaft 17 to leave the sliding tongue 6, and the handle 1 rotates outward from the base 2 with the cooperation of the connecting component 4, so that the other end of the connecting component 4 is disengaged from the door panel, thus unlocking the door.
[0055] like Figures 1 to 6 As shown, the handle 1 is also provided with an upper through hole and a lower through hole. The upper through hole, the lower through hole and the lock cylinder mounting hole 10 are connected. The magnet shaft 17 of the electromagnet 15 can pass through the upper through hole and abut against the sliding tongue 6. The lower end of the sliding tongue 6 can pass through the lower through hole and abut against the movable abutment post 23.
[0056] like Figure 3 and Figure 4 As shown, the connecting assembly 4 includes a left swing arm 32, a right swing arm 33, and a swing arm torsion spring 34. The left swing arm 32 and the right swing arm 33 are plugged together. The front ends of the left swing arm 32 and the right swing arm 33 are connected to form a swing arm pivot 35. The swing arm pivot 35 is movably connected to the base 2 and the handle 1. The swing arm torsion spring 34 is mounted on the swing arm pivot 35. The connecting assembly 4 serves to lock the door panel. The swing arm torsion spring 34, the handle 1, the left swing arm 32, and the right swing arm 33 form a lever relationship, improving the convenience of unlocking.
[0057] like Figure 3 and Figure 4 As shown, the other end of the right swing arm 33 is provided with a connecting end 36, and the connecting end 36 is provided with a threaded hole. A cover plate is installed at the threaded hole by bolts or the like to assist in locking the door.
[0058] It should be noted that when the handle 1 drives the connecting assembly 4 to rotate along the swing arm pivot 35, the connecting end 36 swings downward, and the connecting end 36 and the cover plate disengage from or move away from the corresponding door panel, and are in the unlocked state; when in the locked state, the connecting end 36 and the cover plate on it abut against the corresponding door panel.
[0059] like Figures 1 to 4 As shown, the handle 1 has a pressing position and a raised gripping part, which is located below the lock cylinder 5. Pressing the pressing position triggers the pressure sensing component 16, and with the cooperation of the control component, the sliding tongue 6, the left swing arm 32, the right swing arm 33, the swing arm torsion spring 34, and the base 2, the lower end of the handle 1 can be driven to open outward, making it easier to use the functions of the handle 1.
[0060] like Figure 3 As shown, it also includes a protective seat 37, which is fixedly connected to the base 2 by screws.
[0061] like Figure 1 and Figure 2 As shown, the fixed shell 13 is fixed to the base 2 with screws, the movable fixed seat 18 is fixed to the base 2 with screws, and the rotating connector 25 and the rotating lever 26 are fixed with screws.
[0062] like Figure 3 and Figure 4 As shown, the connection between the protective shell and the base 2, and the connection between the fixed shell 13 and the base 2 are respectively sealed and waterproofed.
[0063] It should be noted that the waterproof sealing in this embodiment can be achieved by integrally forming a waterproof sealing strip on the protective shell; or by using sealant or sealing rubber ring at the connection between the protective shell and the base 2, or at the connection between the fixed shell 13 and the base 2.
[0064] like Figure 1 and Figure 2 As shown, the PCB board 14 is equipped with a power plug 38 to enable power supply.
[0065] like Figures 1 to 4 As shown, it also includes an indicator light 39, which is installed in the base 2 and is electrically connected to the PCB board 14.
[0066] It should be noted that the control component in this embodiment can also be equipped with a Bluetooth module, which can be controlled by a mobile phone via Bluetooth. That is, the PCB board 14 receives the unlocking signal and decodes the managed lock.
[0067] like Figures 1 to 4 As shown, the handle 1 has a through hole located on one side of the indicator light 39. The light from the indicator light 39 passes through the through hole.
[0068] like Figure 4 As shown, the handle 1 is provided with an elastic block support column 40, and one end of the elastic block 12 is connected to the elastic block support column 40.
[0069] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A car door lock, characterized in that: It includes a handle (1), a base (2), a protective shell (3), a connecting component (4), a control component, a lock cylinder (5), a sliding tongue (6), a moving mechanism (7), and a pull rope (8). One end of the base (2) is connected to the protective shell (3). The control component and the moving mechanism (7) are both fixed to the other end of the base (2). The base (2) has a handle mounting position (9). The handle (1) is movably installed in the handle mounting position (9). The handle (1) has a lock cylinder mounting hole (10). The lock cylinder (5) is set in the lock cylinder mounting hole (10). The lock cylinder (5) has a limiting part (11). The limiting part (11) is movably connected to the sliding tongue (6). The control component includes an elastic block (12), a fixed shell (13), a PCB board (14) and an electromagnet (15) installed in the fixed shell (13). The PCB board (14) is provided with a pressure sensing component (16). The electromagnet (15) is electrically connected to the PCB board (14). The electromagnet (15) is provided with a magnet shaft (17). One end of the sliding tongue (6) is in contact with the magnet shaft (17), and the other end of the sliding tongue (6) is in contact with the moving mechanism (7).
2. The door lock according to claim 1, characterized in that: The movable mechanism (7) includes a fixed seat (18), a movable connecting seat (19), a first spring (20) and a second spring. The fixed seat (18) is provided with a movable groove (21). One end of the movable connecting seat (19) is movably installed in the movable groove (21). The first spring (20) and the second spring are both connected to the movable connecting seat (19).
3. The door lock according to claim 2, characterized in that: One end of the movable connecting seat (19) is provided with a movable part (22), which is movably installed in the movable groove (21). The first spring (20) and the second spring are both connected to the movable part (22). The other end of the movable connecting seat (19) is provided with a movable abutting post (23), and the upper end of the movable abutting post (23) is movably abutting against the lower end of the sliding tongue (6).
4. The door lock according to claim 3, characterized in that: The active mechanism (7) also includes a rotating torsion spring (24), a rotating connector (25), and a rotating paddle (26). One end of the rotating connector (25) is connected to the rotating paddle (26), and the other end of the rotating connector (25) passes through the fixed seat (18) and the moving part (22) and is connected to the rotating torsion spring (24).
5. The door lock according to claim 4, characterized in that: The rotating connector (25) has a rotating part (28) on one side. The rotating part (28) is convex and can movably abut against the moving part (22).
6. The door lock according to claim 5, characterized in that: The sliding tongue (6) is provided with a horizontal recess (29), a vertical recess (30) and a spring mounting position. A third spring (31) is installed on the spring mounting position. The upper end of the vertical recess (30) is connected to the horizontal recess (29). The lower end of the vertical recess (30) is opened downwards. The limiting part (11) can move within the horizontal recess (29) and the vertical recess (30).
7. The door lock according to claim 6, characterized in that: The handle (1) is also provided with an upper through hole and a lower through hole. The upper through hole, the lower through hole and the lock cylinder mounting hole (10) are connected. The magnet shaft (17) of the electromagnet (15) can pass through the upper through hole and abut against the sliding tongue (6). The lower end of the sliding tongue (6) can pass through the lower through hole and abut against the movable abutting post (23).
8. The door lock according to claim 7, characterized in that: The connecting assembly (4) includes a left swing arm (32), a right swing arm (33) and a swing arm torsion spring (34). The left swing arm (32) and the right swing arm (33) are connected by an insertion. The front end of the left swing arm (32) and the front end of the right swing arm (33) are connected to form a swing arm pivot (35). The swing arm pivot (35) is movably connected to the base (2) and the handle (1). The swing arm torsion spring (34) is set on the swing arm pivot (35).
9. The door lock of claim 8, wherein: The other end of the right swing arm (33) is provided with a connecting end (36).
10. The door lock according to claim 9, characterized in that: It also includes a protective base (37), which is connected to the protective shell (3).