An electric tailgate lock for a vehicle

Abstract

The present invention discloses an electric tailgate lock for an automobile, which includes a large lock tongue, a small lock tongue, a self-suction unlocking component and a control component. The large lock tongue is provided with a lock groove and a shifting ratchet groove, and the clockwise direction of the lock groove and the shifting ratchet groove is the stop end; the small lock tongue is pressed against the large lock tongue, and a notch for stop cooperation with the small lock tongue is arranged at the stop end of the lock groove; the self-suction unlocking component includes a motor, a driving rod, a shifting rod and an unlocking arm, and the control component includes a position sensor and a controller; the structure of the present invention is concise. Only one motor can achieve self-suction full locking and automatic unlocking. The overall structure is very delicate, not only convenient to install, but also low in cost and strong in practicability.

Description

Technical Field

[0001] The present invention relates to a tailgate lock for an automobile, and particularly to an electric tailgate lock for an automobile with a self - suction function. Background Art

[0002] The tailgate locks of high - grade cars have a self - suction function, and the tailgate can be automatically closed when it is in a semi - locked state, solving the safety hazard of the door not being closed due to negligence. However, the structure of the tailgate lock with a self - suction function is very complicated. The self - suction part and the unlocking part of the tailgate lock are separately and independently arranged, and are driven by multiple motors. Not only is the volume large and the installation inconvenient, but also the cost is high. Summary of the Invention

[0003] In view of the technical problems existing in the background art, the technical problem to be solved by the present invention is to provide an electric tailgate lock for an automobile with a compact structure, convenient installation and low cost.

[0004] To solve the above - mentioned technical problems, the present invention adopts the following technical solutions: This kind of electric tailgate lock for an automobile is characterized in that it includes

[0005] A large lock tongue, which is rotatably installed on the housing. The large lock tongue is connected with a first return torsion spring. The large lock tongue is provided with a lock groove and a shifting position ratchet groove, and the clockwise direction of the lock groove and the shifting position ratchet groove is the stop end;

[0006] A small lock tongue, which is rotatably installed on the housing. The small lock tongue is connected with a second return torsion spring. The small lock tongue is pressed against the large lock tongue, and a notch for stop - fitting with the small lock tongue is arranged at the stop end of the lock groove;

[0007] A self - suction unlocking component, which includes

[0008] A motor, whose output end is in transmission connection with a cam,

[0009] A driving rod, which is rotatably installed on the housing. One end of the driving rod is hinged to the cam,

[0010] A shifting rod, which is rotatably installed on the driving rod. The shifting rod is connected with a third return torsion spring. The shifting rod is provided with a pawl for shifting - fitting with the shifting position ratchet groove,

[0011] And an unlocking arm, which is rotatably installed on the housing. The unlocking arm is in unlocking cooperation with the cam. The unlocking arm is provided with a linkage block for swinging - fitting with the shifting rod, and the small lock tongue is provided with a transmission block for swinging - fitting with the unlocking arm;

[0012] And a control component, which includes

[0013] A position sensor, which is installed on the housing,

[0014] And a controller. Both the motor and the position sensor are connected to the controller.

[0015] The structure of the present invention is concise. Only one motor is used, which can achieve self-suction full locking and automatic unlocking. The overall structure is very delicate, not only convenient for installation, but also low in cost and strong in practicability.

[0016] Preferably, a limiting block is provided on the housing, and the unlocking arm is connected with a return torsion spring IV that presses it against the limiting block. During the unlocking operation, the unlocking arm is pressed against the cam.

[0017] Preferably, the position sensor includes a self-suction sensor;

[0018] A swing arm is rotatably installed on the housing. The swing arm is inductively matched with the self-suction driver. The swing arm is connected with a return torsion spring IV, and a driving block that swings in cooperation with the swing arm is provided on the shift lever.

[0019] Preferably, the position sensor includes a in-place sensor;

[0020] The small lock tongue or the unlocking arm is inductively matched with the in-place sensor.

[0021] Preferably, an unlocking limiting arm is provided on the large lock tongue. The unlocking limiting arm is connected with the shifting ratchet groove, and the unlocking limiting arm is arranged in the clockwise direction of the shifting ratchet groove.

[0022] Preferably, the position sensor includes a reset sensor;

[0023] The cam is inductively matched with the reset sensor.

[0024] The present invention uses a self-suction sensor, an in-place sensor and a reset sensor to respectively detect whether the tailgate is in a semi-locked state or a full-locked state and whether the motor is reset. The position sensor sends the detected information to the controller, and the controller controls the operation of the motor to lock the semi-locked tailgate lock, eliminating potential safety hazards.

[0025] Preferably, the electric tailgate lock of the vehicle further includes a manual unlocking component, which includes an unlocking arm. The unlocking arm is rotatably installed on the housing. One end of the unlocking arm is connected with a pull rope, and a transmission block that swings in cooperation with the unlocking arm is provided on the small lock tongue. The user can also manually open the tailgate lock and use it in the state where the motor fails. Description of the Drawings

[0026] Figure 1 For the schematic illustration of the present invention Figure 1 。

[0027] Figure 2 For the schematic illustration of the present invention Figure 2 。

[0028] Figure 3This is the front view of the semi-locked state of the present invention.

[0029] Figure 4 This is the front view of the fully locked state of the present invention.

[0030] Figure 5 This is the front view of the unlocked state of the present invention. Detailed implementation manners

[0031] The embodiments of the present invention and the relevant details and working principles of the embodiments will be described below in conjunction with the accompanying drawings. This kind of electric tailgate lock for automobiles includes a large lock tongue 1, a small lock tongue 2, a self-suction unlocking component and a control component. The large lock tongue 1 is rotatably installed on the housing 8. The large lock tongue is connected to a first return torsion spring. The elastic force of the first return torsion spring causes the large lock tongue to rotate counterclockwise to the unlocking state. The large lock tongue 1 is provided with a lock groove 13 and a shifting ratchet groove 3. The clockwise direction of the lock groove and the shifting ratchet groove is the stop end, and the counterclockwise direction of the shifting ratchet groove 3 can slide. The small lock tongue 2 is rotatably installed on the housing 8. The small lock tongue is connected with a second return torsion spring. The small lock tongue 2 is pressed against the large lock tongue 1. The elastic force of the second return torsion spring presses the small lock tongue against the large lock tongue. A notch 4 for stop cooperation with the small lock tongue is provided at the stop end of the lock groove 13. The notch forms a step at the stop end of the lock groove, so that the small lock tongue and the large lock tongue are stuck and stopped. When fully locked, the large lock tongue 1 rotates clockwise, and the small lock tongue slides on the back of the shifting ratchet groove of the large lock tongue until it enters the notch 4, and the large lock tongue stops rotating. At this time, the elastic force of the first return torsion spring presses it against the small lock tongue, and the small lock tongue also presses against the notch of the large lock tongue, and the two are pressed against each other, and the large lock tongue is locked in the fully locked state.The self-priming unlocking component includes a motor 16, a driving rod 15, a shifting rod 9 and an unlocking arm 6. The output end of the motor is in transmission connection with a cam 7. The driving rod 15 is rotatably installed on the housing. One end of the driving rod is hinged to the cam 7. The shifting rod 9 is rotatably installed on the driving rod 15. The shifting rod is connected with a third return torsion spring. The shifting rod is provided with a pawl 5 which is in driving cooperation with a shifting position ratchet groove 3. The elastic force of the third return torsion spring makes the pawl of the shifting rod always press against the large lock tongue. The unlocking arm 6 is rotatably installed on the housing 8. The unlocking arm is in unlocking cooperation with the cam 7, that is, the cam 7 drives the unlocking arm 6 to swing to achieve unlocking. The swinging trajectories of the unlocking arm and the driving rod 15 are different. Two cams can be adopted or two curved surface structures can be designed on one cam to drive the driving rod and the unlocking arm respectively. In this embodiment, a limiting block is provided on the housing, not shown in the figure. The unlocking arm 6 is connected with a fourth return torsion spring which makes it press against the limiting block. In the unlocking working condition, the unlocking arm 6 is pressed against the cam 7. The pressing joint of the cam and the unlocking arm is an unlocking driving surface. That is, when unlocking, the unlocking driving surface of the cam is on the left side of the limiting block. The unlocking arm is pressed against the cam and does not contact the limiting block. The cam drives the unlocking arm to swing to the left, which is equivalent to swinging counterclockwise. However, in the half-lock and full-lock working conditions, the unlocking driving surface of the cam moves to the right side of the limiting block. At this time, the unlocking arm presses on the limiting block. Due to the blocking of the limiting block, the unlocking arm is separated from the cam. The unlocking arm is provided with a linkage block 11 which is in swinging cooperation with the shifting rod. The small lock tongue is provided with a transmission block 12 which is in swinging cooperation with the unlocking arm. In the half-lock state, the pawl 5 is in the shifting position ratchet groove 3 and is pressed against the stopping end of the shifting position ratchet groove. When fully locked, the driving rod 15 swings downward. The pawl 5 pushes the large lock tongue 1 to rotate clockwise, and finally full locking is achieved. In these two states, the unlocking arm is always pressed against the limiting block and is not affected by the rotation of the cam. See the attached drawing. The transmission block 12 of the small lock tongue is arranged on the left side of the unlocking arm 6. The linkage 11 block on the unlocking arm is arranged below the shifting rod 9. The small lock tongue and the shifting rod are not affected by the unlocking arm either. When unlocking, the motor drives the cam 7 to rotate reversely. The cam drives the unlocking arm 6 to swing to the left. The unlocking arm needs to drive the shifting rod to lift upward to separate the pawl 5 from the large lock tongue 1. At the same time, the unlocking arm drives the transmission block 12 to separate the small lock tongue 2 from the large lock tongue. The unlocking arm is also connected with a pull rope. The user can manually open the tail door lock, manually drive the pull rope, overcome the elastic force of the fourth return torsion spring, make the unlocking arm swing to the left, separate the small lock tongue and the pawl from the large lock tongue. The large lock tongue 1 is not restricted and rotates counterclockwise under the drive of the first return torsion spring to achieve unlocking.

[0032] The control component includes a position sensor and a controller. The position sensor is installed on the housing. Both the motor and the position sensor are connected with the controller. That is, after the position sensor detects the position of the large lock tongue rotation, it sends the information to the controller, and the controller sends an instruction to the motor 16. For example, when the position sensor detects that the large lock tongue is in the half-lock state, see the attached Figure 3, at this time, the small locking tongue 2 is on the back of the shifting position ratchet groove 3, that is, it is pressed against the side of the large locking tongue 2. The shifting claw 5 is in the shifting position ratchet groove 3 and is pressed against the stop end of the shifting position ratchet groove. After receiving the semi-lock information, the controller sends an instruction to the motor, and the motor runs, driving the cam 7 to rotate clockwise, causing the end of the driving rod where the shifting rod 6 is installed to swing downward. The shifting claw 5 of the shifting rod pushes the large locking tongue to rotate clockwise. See attached Figure 4 , the small locking tongue 2 slides on the back of the shifting position ratchet groove until it enters the notch 4. The motor reverses, and the cam drives the driving rod to swing in the reverse direction. The return torsion spring three causes the shifting claw of the shifting rod to move in the reverse direction along the back of the shifting position ratchet groove. The large locking tongue is not subject to the thrust of the shifting claw 5, and the elastic force of the return torsion spring one presses it against the small locking tongue, and the two restrict each other. The large locking tongue 1 is locked in the fully locked state. After the motor drives the cam to reset, it stops running, thus realizing automatic full locking. When unlocking, the motor reverses, the driving cam rotates counterclockwise, the cam pushes the unlocking arm 6 to swing clockwise, the linkage block 11 on the unlocking arm drives the shifting rod to lift upward, the shifting claw 5 is separated from the large locking tongue, and the swinging of the unlocking arm also pushes the transmission block 12, causing the small locking tongue 2 to swing leftward to disengage from the notch 4. The large locking tongue is not restricted by the small locking tongue and the shifting claw, and rotates counterclockwise under the drive of the return torsion spring one. See attached Figure 5 , at this time, the locking bolt of the tailgate can disengage from the locking groove and is in the unlocked state. The present invention uses one motor to be able to both self-aspirate and fully lock and automatically unlock. The overall structure is very delicate. It is not only convenient to install, but also low in cost and strong in practicability. The structure of the present invention is concise. It only uses one motor to be able to both self-aspirate and fully lock and automatically unlock. The overall structure is very delicate. It is not only convenient to install, but also low in cost and strong in practicability.

[0033] In order to accurately locate the position of the large lock tongue, the position sensor includes a self-priming sensor 14 and an in-place sensor 17. A swing arm 19 is rotatably mounted on the shell, and the swing arm cooperates with the self-priming transmission sensor 14. The swing arm is connected with a return torsion spring 4. The lever 9 is provided with a driving block 20 that cooperates with the swing arm swing, and the driving block is arranged on the right side of the swing arm. The elastic force of the return torsion spring 4 makes the swing arm always press against the driving block 20. When the cam 7 drives the lever to swing, the lever drives the swing arm to swing through the driving block. The swing arm and the self-priming sensor have two states, one is that when the self-priming sensor detects that the distance between the two is close, it is an open signal, and the other is that when the distance between the two becomes larger, it is a half-lock signal; the small lock tongue 2 cooperates with the in-place sensor sensor 17, and also has two states. When the self-priming sensor detects that the distance between the two is close, it is an open signal, and when the distance between the two becomes larger, it is a full-lock signal. The self-priming sensor 14 and the in-place sensor 17 are used together for the best effect. When the large lock tongue 1 is in a semi-locked state, the distance between the self-priming sensor and the swing arm is large, and the self-priming sensor sends the detected information to the controller. The controller sends a command to the motor, the motor starts, drives the lever to swing, and the lever drives the large lock tongue to rotate clockwise. When the large lock tongue rotates to a fully locked state, the lever drives the swing arm to swing to the left, and the distance between the self-priming sensor and the swing arm becomes smaller. The small lock tongue moves into the notch of the large lock tongue, and the distance between the small lock tongue and the in-place sensor becomes larger. When the controller receives the above information, the tailgate lock is fully locked, and the motor rotates in the opposite direction to reset and return to the initial state. Because the motor of the present invention is used for both self-priming full locking and unlocking, in order to accurately operate the motor, the motor must be reset after each operation to return to the initial state. An unlocking limit arm 21 is provided on the large lock tongue 1, and the unlocking limit arm is connected to the shifting ratchet groove 3, and the unlocking limit arm is arranged in the clockwise direction of the shifting ratchet groove, see attached Figure 5 After unlocking, the push claw 5 climbs onto the unlocking limit arm 21. After the motor is reset, the push rod is not restricted by the linkage block on the unlocking arm. Driven by the return spring three, it is pressed toward the large lock tongue 1. The push claw is pressed against the unlocking limit arm. The unlocking limit arm and the push rod are staggered front and back. When the tailgate is closed, the large lock tongue is not blocked by the push rod and can rotate clockwise; the position sensor includes a reset sensor 18; the cam 7 cooperates with the reset sensor induction, and the cam is provided with an initial position. After the motor is running, it rotates in the opposite direction until the reset sensor detects the initial position of the cam and the motor stops, thereby ensuring that the motor can return to the initial state after running.

Claims

1. An electric tailgate lock for a vehicle, characterized in that: It includes a large locking tongue, a small locking tongue, a self - suction unlocking component and a control component. The large locking tongue is rotatably installed on the housing. The large locking tongue is connected to a first return torsion spring. The large locking tongue is provided with a locking groove and a shifting ratchet groove, and the clockwise direction of the locking groove and the shifting ratchet groove is the stop end. The small locking tongue is rotatably installed on the housing. The small locking tongue is connected to a second return torsion spring. The small locking tongue is pressed against the large locking tongue, and a notch for stop - fitting with the stop end of the locking groove is provided on the small locking tongue. The self - suction unlocking component includes a motor, a driving rod, a shifting rod and an unlocking arm. The output end of the motor is in transmission connection with a cam. The driving rod is rotatably installed on the housing. One end of the driving rod is hinged to the cam. The shifting rod is rotatably installed on the driving rod. The shifting rod is connected to a third return torsion spring. The shifting rod is provided with a pawl for engaging and shifting with the shifting ratchet groove. The unlocking arm is rotatably installed on the housing. The unlocking arm is in unlocking cooperation with the cam. A limiting block is provided on the housing. The unlocking arm is connected to a fourth return torsion spring that presses it against the limiting block. In the unlocking condition, the unlocking arm is pressed against the cam, and the pressing - together position of the cam and the unlocking arm is the unlocking driving surface. The unlocking arm is provided with a linkage block for swinging cooperation with the shifting rod, and the small locking tongue is provided with a transmission block for swinging cooperation with the unlocking arm. The control component includes a position sensor and a controller. The position sensor is installed on the housing, and both the motor and the position sensor are connected to the controller. In the semi - locked state, the pawl is in the shifting ratchet groove and is pressed against the stop end of the shifting ratchet groove. The unlocking arm is separated from the cam, and the unlocking driving surface of the cam is on the right side of the limiting block. When fully locked, the driving rod swings downward, and the pawl pushes the large locking tongue to rotate clockwise to achieve full locking. When unlocking, the motor drives the cam to rotate counterclockwise. The unlocking driving surface of the cam moves to the left side of the limiting block. The cam drives the unlocking arm to swing leftward. The unlocking arm drives the shifting rod to lift the pawl upward to separate from the large locking tongue. At the same time, the unlocking arm drives the transmission block to separate the small locking tongue from the large locking tongue.

2. The electric tailgate lock for an automobile according to claim 1, wherein: The position sensor includes a self - suction sensor. A swing arm is rotatably installed on the housing. The swing arm is in induction cooperation with the self - suction actuator. The swing arm is connected to a fourth return torsion spring. The shifting rod is provided with a driving block for swinging cooperation with the swing arm.

3. The electric tailgate lock for an automobile according to claim 1, wherein: The position sensor includes a in - place sensor. The small locking tongue is in induction cooperation with the in - place sensor.

4. The electric tailgate lock for a vehicle according to claim 1, characterized in that: An unlocking limiting arm is provided on the large locking tongue. The unlocking limiting arm is connected to the shifting ratchet groove and is arranged in the clockwise direction of the shifting ratchet groove.

5. The electric tailgate lock for an automobile according to claim 4, wherein: The position sensor includes a reset sensor. The cam is in induction cooperation with the reset sensor.

6. The motorized tailgate lock for an automobile according to claim 1, characterized in that: The unlocking arm is connected with a pull - rope connection.

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