Door lock
By adopting the matching structure of the lock tongue and the lock hook in the tailgate lock, combined with technical means such as arc-shaped barrier strips and release screws, the noise and wear problems caused by the secondary jump during the locking process are solved, and the functions of electric locking and manual release are realized, which improves the degree of automation.
Patent Information
- Application Number
- CN202421058785.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-15
AI Technical Summary
During the locking process, the existing tailgate locks have different mirror spacing positions of the pre-stop and the main stop, resulting in secondary jumps when the locking tongue and pawls cooperate, causing noise and wear.
The matching structure of the lock tongue and the lock hook is adopted to achieve the functional distinction between half-lock and full lock through the two-stage groove on the lock tongue, and an arc-shaped barrier strip is set on the lock tongue to limit the jumping of the lock hook and reduce noise and friction. At the same time, through the coordination of the release screw and the release link, the electric release action can be achieved, and the release link can be manually toggled to complete the manual mechanical release.
It realizes that the lock hook and release link only need to jump once during the locking process, reducing noise and friction losses, and completing automatic locking and release actions through electric components, improving the degree of automation.
Smart Images
Figure CN222615053U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile door locks, in particular to a door lock. Background Art
[0002] At present, a tailgate lock is installed on the tailgate of a vehicle to lock the tailgate of the vehicle. The current tailgate lock generally adopts the cooperation of a lock tongue and a ratchet in structure. When the tailgate is closed, the lock tongue is pushed by the lock pin, and the lock pin is locked in cooperation with the ratchet. For example, the published patent 2007800417412 discloses a locking mechanism for a vehicle, whose structure is to lock by the cooperation of a pre-stopper and a main stopper on the lock tongue and the ratchet to achieve a half-locked and fully locked state. However, during the operation of the above structure, due to the different positions of the mirror image spacing of the pre-stopper and the main stopper, two jumps will be generated when the pre-stopper and the main stopper contact the lock tongue respectively, thereby generating two noises. After the pre-stopper completes the stopping work first, it needs to push a larger angle before the pre-stopper can be pushed out of the groove on the lock tongue, and the main stopper can enter the groove on the lock tongue. Its movement trajectory needs to be more extreme. At the same time, multiple jumps are also a great test for the wear degree of the product. Therefore, it is particularly important to solve the problem of noise and wear caused by secondary bounce when the lock tongue and pawl cooperate to lock on the current ordinary tailgate lock. Utility Model Content
[0003] The purpose of the utility model is to provide a door lock, which can lock the door pin through the cooperation of the lock tongue and the lock hook to complete the door locking work, and at the same time, the functions of half locking and full locking are distinguished through the two-stage groove on the lock tongue, and an arc-shaped blocking strip is provided on the lock tongue to block the lock hook when the lock tongue continues to rotate, so that the protrusion of the lock hook moves along the arc-shaped blocking strip, and no secondary jump is generated when switching between half locking and full locking, thereby reducing noise and friction loss. At the same time, through the cooperation of the release screw and the release connecting rod, the electric release action can be completed through the electric component, and the release connecting rod can also be manually toggled to complete the manual mechanical release. At the same time, an external suction actuator can also be configured to drive the suction connecting rod to push the lock tongue through the pull wire to realize the automatic locking function. The above solves the problem of secondary jumps causing noise and wear when the lock tongue and pawl of the current tailgate lock cooperate to lock, and also realizes the function of electric locking and easy door closing.
[0004] The utility model provides a door lock, comprising a shell, the outer surface of the shell is wrapped with a decorative shell, a mounting plate is arranged on the shell, the shell is mounted on a vehicle body through the mounting plate, a lock tongue is installed in the shell, the lock tongue is arranged in the shell through a lock tongue rotating shaft, and the lock tongue rotates along the lock tongue rotating shaft, a lock hook is arranged beside the lock tongue, a lock hook rotating shaft is arranged at the lower part of the lock hook, the lock hook swings around the lock hook rotating shaft as the center, a groove is opened on the lock tongue, the number of the grooves is two, a convex block matching with the groove is arranged on the lock hook, and locking work is completed by the cooperation of the groove and the convex block, a release screw is arranged above the lock hook, a release motor is arranged at the left end of the release screw, an irregular convex block thread is arranged on the release screw, a release connecting rod is arranged below the release screw, the release connecting rod is arranged on the mounting plate, and the release connecting rod and the lock hook rotate with their respective rotating shafts as the center of the circle.
[0005] A further improvement is that a suction connecting rod is arranged next to the release motor, the upper end of the suction connecting rod is connected to the suction actuator through a pull wire, the pull wire and the suction connecting rod are connected through the suction actuator, and the suction connecting rod is arranged on the mounting plate through the suction rotating shaft.
[0006] A further improvement is that return springs are provided on the lock tongue shaft, lock hook shaft, release shaft and suction shaft, and the return springs provide a reset force for the lock tongue, lock hook, release connecting rod and suction connecting rod.
[0007] A further improvement is that a plug connector is arranged above the shell, which is connected to a connector of a vehicle controller to realize signal transmission and energy conversion.
[0008] A further improvement is that a detection switch is provided in the plug connector, and the positions of the lock tongue, the lock hook and the release connecting rod can be identified by the state of the detection switch.
[0009] A further improvement is that a snow load connecting rod is arranged between the release screw and the lock tongue and the lock hook, and the door is kept unlocked by the snow load connecting rod, and the snow load connecting rod is arranged in the shell through the snow load rotating shaft.
[0010] A further improvement is that a dust cover is arranged outside the suction connecting rod to protect the suction connecting rod.
[0011] A further improvement is that a release groove with a notch is provided on the release link, and the lock hook is limited by the release groove to achieve action transmission.
[0012] A further improvement is that: an arc-shaped blocking strip is arranged on the lock tongue, and a blocking protrusion is arranged on the lock hook, and the jumping of the lock hook is limited by the blocking protrusion contacting the arc-shaped blocking strip.
[0013] The utility model has the following beneficial effects: through the special structure of the lock tongue and the lock hook, the lock hook and the release link only need to jump once during the door locking process, reducing the generation of noise and friction, and realizing automatic release under the drive of the release motor and the release screw. At the same time, an external suction actuator can be expanded to complete the door suction action, with a higher degree of automation. A detection switch is added to the connector to monitor the door status in real time, and a snow load link is added to keep the door unlocked. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure appearance of the utility model.
[0015] Figure 2 It is a front view of the internal structure of the shell of the utility model.
[0016] Figure 3 It is a rear view of the internal structure of the shell of the utility model.
[0017] Figure 4 It is a schematic diagram of the lock tongue structure of the utility model.
[0018] Figure 5 It is a schematic diagram of the release connecting rod structure of the utility model.
[0019] Wherein: 1-housing, 2-mounting plate, 3-lock tongue, 4-lock hook, 5-groove, 6-bump, 7-release screw, 8-release motor, 9-suction connecting rod, 10-lock buffer block, 11-plug connector, 12-snow load connecting rod, 13-dust cover, 14-release groove, 15-arc blocking strip, 16-blocking bump, 17, release connecting rod. DETAILED DESCRIPTION
[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0021] like Figure 1-3As shown, the present embodiment provides a door lock provided by the utility model, comprising a shell 1, a mounting plate 2 is arranged on the shell 1, the shell 1 is mounted on the vehicle body through the mounting plate 2, a lock tongue 3 is installed in the shell 1, the lock tongue 3 is arranged in the shell 1 through the lock tongue rotating shaft, and the lock tongue 3 rotates along the lock tongue rotating shaft, a lock hook 4 is arranged beside the lock tongue 3, a lock hook rotating shaft is arranged on the upper part of the lock hook 4, the lock hook 4 swings around the lock hook rotating shaft, a groove 5 is opened on the lock tongue 3, the number of the grooves 5 is two, a protrusion 6 cooperating with the groove 5 is arranged on the lock hook 4, and the locking work is completed by the cooperation of the groove 5 and the protrusion 6, a release screw 7 is arranged above the lock hook 4, a release motor 8 is arranged at the left end of the release screw 7, an irregular protrusion thread is arranged on the release screw 7, a release connecting rod 17 is arranged below the release screw 7, and the release connecting rod 17 is arranged on the mounting plate 2, and the release connecting rod 17 and the lock hook 4 rotate using their respective rotating shafts as the center of the circle. A suction link 9 is arranged next to the release motor 8. The upper end of the suction link 9 is connected to the suction actuator through a pull wire. The external suction actuator drives the suction link 9 to drive the pull wire to transmit power. The suction link 9 is arranged on the mounting plate 2 through the suction shaft. Return springs are arranged on the lock tongue shaft, the lock hook shaft, the release shaft and the suction shaft, and the return spring provides a rebound force for the shaft. A lock buffer block 10 is arranged between the lock tongue 3 and the lock hook 4, and the lock buffer block 10 buffers the rebound of the lock tongue 3 and the lock hook 4. A plug connector 11 is arranged above the housing 1, and is connected to the connector of the vehicle controller through the plug connector 11 to realize signal transmission.
[0022] A detection switch is provided in the plug connector 11, and the positions of the lock tongue, the lock hook and the release link are identified by the state of the detection switch.
[0023] A snow load link 12 is provided between the release screw 7 and the lock tongue 3 and the lock hook 4. The snow load link 12 is used to keep the door unlocked when necessary. The snow load link 12 is provided in the housing 1 through a snow load shaft. A dust cover 13 is provided outside the release motor 8 to protect the suction link 9. Figure 5 As shown, a release groove 14 with a notch is provided on the release link 17, and the lock hook 4 is limited by the release groove 14. Figure 4 As shown, an arc-shaped blocking strip 15 is provided on the lock tongue 3 , and a blocking protrusion 16 is provided on the lock hook 4 , and the blocking protrusion 16 contacts the arc-shaped blocking strip 15 to limit the jumping of the lock hook 4 .
[0024] Working principle: when the door lock pin is inserted into the groove 5 of the lock tongue 3, the lock tongue 3 is driven by the lock pin to rotate along the lock tongue shaft as the axis, and the lock hook 4 is driven by the spring on the lock hook shaft to be close to the lock tongue 3, and the protrusion 6 on the lock hook 4 is inserted into the first fixed groove below the side of the lock tongue 3, so that the door is half-locked. When the door lock pin drives the lock tongue 3 to continue to rotate, the arc-shaped blocking strip 15 on the lock tongue 3 lifts the lock hook 4, and the connection between the lock hook 4 and the release link 17 moves in the release groove 14, so the release link 17 will not jump, and the lock hook 4, driven by the lock tongue 3, inserts the protrusion 6 into the second fixed groove below the side of the lock tongue 3 to complete the full lock state. When the vehicle controller controls the tailgate to open, the plug connector 11 provides power to the release motor 8 to start rotating. There is a transmission gear on the rotating rod of the release motor 8, which meshes with the gear at one end of the release screw 7. The release motor 8 drives the release screw 7 to rotate, and the irregular protrusion thread on the release screw 7 pushes the release link 17 to the disengagement position, driving the lock hook 4 to disengage the lock tongue 3, so as to open the car lock. The external suction actuator drives the suction link 9 to rotate along the suction link shaft through the pull wire to realize the door suction action. The lock tongue 3 and the lock hook 4 are protected by the lock buffer block 10 when they are in contact and disengagement, so as to prevent the lock tongue 3 and the lock hook 4 from being damaged due to impact.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A door lock, comprising a housing (1), wherein a mounting plate (2) is arranged on the housing (1), and the housing (1) is mounted on a vehicle body via the mounting plate (2); a lock tongue (3) is mounted in the housing (1), and the lock tongue (3) is arranged in the housing (1) via a lock tongue rotating shaft, and the lock tongue (3) rotates along the lock tongue rotating shaft; a lock hook (4) is arranged beside the lock tongue (3), and a lock hook rotating shaft is arranged at the lower part of the lock hook (4), and the lock hook (4) swings around the lock hook rotating shaft as the center; a groove (5) is provided on the lock tongue (3), and the number of the grooves (5) is two; a convex block (6) is provided on the lock hook (4) to cooperate with the groove (5), and a locking operation is completed by the cooperation between the groove (5) and the convex block (6), and the locking work is completed, characterized in that: A release screw (7) is arranged above the lock hook (4), a release motor (8) is arranged at the left end of the release screw (7), an irregular convex thread is arranged on the release screw (7), and a release connecting rod (17) is arranged below the release screw (7), the release connecting rod (17) is mounted on the mounting plate (2), and the release connecting rod (17) and the lock hook (4) rotate with their respective rotation axes as the center of the circle.
2. A door lock according to claim 1, characterized in that: A suction connecting rod (9) is arranged next to the release motor (8); the upper end of the suction connecting rod (9) is connected to the suction actuator via a pull wire; and the suction connecting rod (9) is arranged on the mounting plate (2) via a suction rotating shaft.
3. A door lock according to claim 1 or 2, characterized in that: The lock tongue rotating shaft, the lock hook rotating shaft, the release rotating shaft and the suction rotating shaft are all provided with return springs, and the return springs provide a reset force for the lock tongue, the lock hook, the release connecting rod and the suction connecting rod.
4. A door lock according to claim 1, characterized in that: A plug connector (11) is provided above the housing (1), and is connected to a plug connector of a vehicle controller via the plug connector (11) to achieve signal transmission and energy conversion.
5. A door lock according to claim 4, characterized in that: The plug connector (11) is provided with a detection switch, and the positions of the lock tongue, the lock hook and the release connecting rod are identified by the state of the detection switch.
6. A door lock according to claim 1, characterized in that: A snow load connecting rod (12) is arranged between the release screw rod (7), the lock tongue (3) and the lock hook (4), and the vehicle door is kept unlocked by the snow load connecting rod (12). The snow load connecting rod (12) is arranged in the housing (1) via a snow load rotating shaft.
7. A door lock as claimed in claim 2, characterized in that: A dust cover (13) is provided outside the suction connecting rod (9), and the dust cover (13) protects the suction connecting rod (9).
8. A door lock according to claim 1, characterized in that: The release link (17) is provided with a release groove (14) with a notch.
9. A door lock according to claim 1, characterized in that: The lock tongue (3) is provided with an arc-shaped blocking strip (15), and the lock hook (4) is provided with a blocking protrusion (16), and the blocking protrusion (16) contacts the arc-shaped blocking strip (15) to limit the jumping of the lock hook (4).