Automobile tailgate lock

Abstract

The present invention belongs to the technical field of automobile accessories and provides a car tailgate lock, including a ratchet, a locking transmission part and an unlocking transmission part; the ratchet can rotate around its own ratchet rotation center, and the ratchet is provided with a ratchet locking part to realize the locking and unlocking actions of the ratchet; the locking transmission part includes a paddle, and the paddle can rotate around its own paddle rotation center; the unlocking transmission part includes an unlocking gear shaft, a rocker arm, a pawl and a locking plate, the unlocking gear shaft is provided with a gear shaft toggle part, the gear shaft toggle part is spirally arranged coaxially with the gear shaft, the pawl can rotate around its own pawl rotation center, the rocker arm is provided on the side of the pawl and can rotate around the pawl rotation center, and the locking plate is provided on the pawl; the unlocking part of the application has a high structural integration, and the unlocking transmission process and the locking transmission process are smoother.

Description

Technical Field

[0001] The invention relates to an automobile tailgate component, in particular to an automobile tailgate lock. Background Art

[0002] The tailgate of a car is the trunk of the car. To open the trunk, just press a button in the car or use the remote control key, and the trunk will open automatically. To close the trunk, press the close button in the trunk or the close button in the car, or use the remote control key, and the trunk will close automatically.

[0003] Currently, the tailgate lock is locked and unlocked using two motors respectively. However, the existing door lock structure has many components and low integration, which can easily cause the door lock to become stuck when unlocking or closing, especially when unlocking. Summary of the invention

[0004] The purpose of the present invention is to overcome the existing defects and provide a car tailgate lock with a high degree of structural integration of the unlocking part and smoother unlocking and locking transmission processes.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a car tailgate lock, comprising a ratchet, a locking transmission part and an unlocking transmission part;

[0007] The ratchet is capable of rotating around its own ratchet rotation center, and a ratchet locking portion is provided on the ratchet to realize the locking and unlocking actions of the ratchet;

[0008] The locking transmission part includes a paddle, which is capable of rotating around its own paddle rotation center;

[0009] The unlocking transmission part includes an unlocking gear shaft, a rocker arm, a pawl and a locking plate. The unlocking gear shaft is provided with a gear shaft toggle portion, which is spirally arranged coaxially with the gear shaft. The pawl can rotate around its own pawl rotation center. The rocker arm is provided on the side of the pawl and can rotate around the pawl rotation center. The locking plate is provided on the pawl.

[0010] wherein the rotation centers of the ratchet wheel, the paddle and the pawl are parallel to each other;

[0011] The locking action of the ratchet is specifically as follows: the rotation of the paddle drives the ratchet to rotate in the forward direction until the locking piece abuts against the locking portion of the ratchet;

[0012] The unlocking action of the ratchet is specifically as follows: the unlocking gear shaft rotates so that the gear shaft toggle part pushes the rocker arm to rotate around the rotation center of the pawl, and the pawl rotates synchronously to drive the locking plate to move until the locking plate is separated from the ratchet locking part, thereby realizing the reverse rotation and reset of the ratchet.

[0013] Furthermore, the locking transmission part further includes a power output wheel, a first transmission gear shaft, a second transmission gear shaft and a pull wire;

[0014] One end of the power output wheel is used to connect to the drive motor, the first transmission gear on the first transmission gear shaft is meshed with the power output wheel, the second transmission gear on the second transmission gear shaft is meshed with the second transmission pinion on the first transmission gear shaft, the pull wire is located on one side of the pulling part, and the two ends of the pull wire are respectively connected to one end of the paddle and the inside of the door lock;

[0015] When the power is transmitted from the driving motor to the pulling part, the pulling wire is pulled by the pulling force of the pulling part to drive the paddle to rotate.

[0016] Furthermore, the pulling portion is cam-shaped; and / or,

[0017] The axis of the power output wheel is perpendicular to the axis of the first transmission gear shaft, and the axis of the first transmission gear shaft is parallel to the axis of the second transmission gear shaft.

[0018] Furthermore, in the locking transmission part,

[0019] A paddle torsion spring is provided at the rotation center of the paddle, and two legs of the paddle torsion spring are respectively fixed on the paddle and inside the door lock.

[0020] Furthermore, in the unlocking transmission part,

[0021] One end of the rocker arm is configured as a rocker arm toggling part that matches the gear shaft toggling part. When the gear shaft rotates, the gear shaft toggling part pushes the rocker arm toggling part to move, so that the rocker arm rotates.

[0022] Furthermore, a rocker arm stop portion is provided on the side surface of the rocker arm, and a ratchet stop portion matching the rocker arm stop portion is provided on the side surface of the pawl extending toward one side of the rocker arm.

[0023] Furthermore, it also includes a switch lock guide portion, the switch lock guide portion includes

[0024] A first limiting portion and a second limiting portion are provided on the surface of the ratchet, wherein a limiting groove is formed between the first limiting portion and the second limiting portion; and

[0025] A rocker arm hook portion extends from the rocker arm surface toward the ratchet, wherein the rocker arm hook portion hooks the second limiting portion and one end of the rocker arm hook is located in the limiting groove.

[0026] Further, in the unlocking transmission part,

[0027] A swing arm torsion spring is arranged at the center of rotation of the pawl. Two legs of the swing arm torsion spring are respectively fixed on the swing arm hook part and inside the door lock.

[0028] Further, the unlocking transmission part further includes a third transmission gear shaft. A third transmission pinion on the third transmission gear shaft meshes with a third transmission big gear on the unlocking gear shaft.

[0029] Further, a ratchet torsion spring is arranged at the center of rotation of the ratchet of the ratchet wheel. Two legs of the ratchet torsion spring are respectively fixed on the ratchet and inside the door lock.

[0030] Advantageous effects:

[0031] 1. Improve the structural integration of the unlocking transmission part. Utilize the integrated structure of the unlocking gear shaft and the cooperation with the swing arm to make the unlocking process smoother and reduce unlocking jamming.

[0032] 2. Improve the structure of the locking transmission part. The rotational speed of the two-stage transmission is reduced and the acting force points are increased, so the driving motor for unlocking does not need to be set for forward and reverse rotation.

[0033] 3. The whole is divided into two parts, each with a compact structure, reducing the occupied space. Description of the drawings

[0034] The drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0035] Figure 1 is the first perspective structure diagram of the present invention;

[0036] Figure 2 is the second perspective structure diagram of the present invention;

[0037] Figure 3 is the third perspective structure diagram of the present invention.

[0038] In the figure: 1-ratchet, 101-ratchet rotation center, 102-ratchet locking part, 103-ratchet toggle part, 104-ratchet hook part, 2-paddle, 201-paddle rotation center, 202-paddle toggle part, 3-unlocking gear shaft, 301-gear shaft toggle part, 02-third transmission gear, 4-rocker arm, 401-rocker arm toggle part, 402-rocker arm stop part, 5-pawl, 501-pawl rotation center Heart, 502-ratchet stop, 6-locking plate, 7-power output wheel, 8-first transmission gear shaft, 801-first transmission gearwheel, 802-second transmission pinion, 9-second transmission gear shaft, 901-second transmission gearwheel, 902-pulling part, 10-pull wire, 11-paddle torsion spring, 12-rocker arm torsion spring, 13-third transmission gear shaft, 1301-third transmission pinion, 14-ratchet torsion spring. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] like Figures 1-3 As shown, the present invention discloses a car tailgate lock, comprising a ratchet 1, a locking transmission part and an unlocking transmission part;

[0041] The ratchet 1 can rotate around its own ratchet rotation center 101, and a ratchet locking portion 102 is provided on the ratchet 1 to achieve locking and unlocking actions of the ratchet 1;

[0042] The locking transmission part includes a paddle 2, which can rotate around its own paddle rotation center 201;

[0043] The unlocking transmission part includes an unlocking gear shaft 3, a rocker arm 4, a pawl 5 and a locking plate 6. The unlocking gear shaft 3 is provided with a gear shaft toggle portion 301, which is spirally arranged coaxially with the gear shaft 3. The pawl 5 can rotate around its own pawl rotation center 501. The rocker arm 4 is provided on the side of the pawl 5 and can rotate around the pawl rotation center 501. The locking plate 6 is provided on the pawl 5.

[0044] The ratchet rotation center 101, the paddle rotation center 201 and the pawl rotation center 501 are parallel to each other;

[0045] The locking action of the ratchet 1 is as follows: the rotation of the paddle 2 drives the ratchet 1 to rotate in the forward direction until the locking piece 6 abuts against the ratchet locking portion 102;

[0046] The unlocking action of the ratchet 1 is specifically as follows: the unlocking gear shaft 3 rotates so that the gear shaft toggle part 301 pushes the rocker arm 4 to rotate around the pawl rotation center 501, and the pawl 5 rotates synchronously to drive the locking plate 6 to move until the locking plate 6 is separated from the ratchet locking part 102, so as to realize the reverse rotation and reset of the ratchet 1.

[0047] By improving the structure of the unlocking gear shaft 3, the integrated gear shaft toggle part 301 is made to move in a spiral motion with the rotation of the gear shaft 3, and the rocker arm 4 abutting against the gear shaft toggle part 301 is rotated along the gear shaft toggle part 301, so that the rocker arm 4 and the pawl 5 move away from one end of the lock gear shaft 3 and gradually move away from the ratchet 1 until the locking plate 6 is separated from the ratchet 1, thereby achieving the unlocking effect; the rocker arm 4, the pawl 5, and the locking plate 6 are integrated together as a whole, and the structure is more stable, which not only strengthens the overall structure of the unlocking transmission part and improves the integration of components, but also reduces the number of intermediate transmission components used and reduces the probability of jamming.

[0048] Specifically, in the unlocking transmission part, one end of the rocker arm 4 is configured as a rocker arm toggle part 401 that matches the gear shaft toggle part 301. When the gear shaft 3 rotates, the gear shaft toggle part 301 pushes the rocker arm toggle part 401 to move, so that the rocker arm 4 rotates.

[0049] The rocker arm toggling portion 401 abuts against the side surface of the gear shaft toggling portion 301 , which can improve the smoothness of the transmission between the rocker arm 4 and the unlocking gear shaft 3 .

[0050] In order to realize the rotation of the paddle 2, the locking transmission part further includes a power output wheel 7, a first transmission gear shaft 8, a second transmission gear shaft 9 and a pull wire 10;

[0051] One end of the power output wheel 7 is used to connect to the drive motor, the first transmission gear 801 on the first transmission gear shaft 8 is meshed with the power output wheel 7, the second transmission gear 901 on the second transmission gear shaft 9 is meshed with the second transmission pinion 802 on the first transmission gear shaft 8, the pull wire 10 is located on one side of the pulling portion 902, and the two ends of the pull wire 10 are respectively connected to one end of the paddle 2 and the inside of the door lock;

[0052] When the power is transmitted from the driving motor to the pulling portion 902 , the pulling wire 10 is pulled by the pulling force of the pulling portion 902 to drive the paddle 2 to rotate.

[0053] Specifically, the power output wheel 7 is a worm gear, and the diameters of the second transmission pinion 802, the first transmission gearwheel 801, and the second transmission gearwheel 901 increase successively; the power is decelerated for the first time from the power output wheel 7 to the first transmission gearwheel 801, and is decelerated for the second time from the second transmission pinion 802 to the second transmission gearwheel 901. The structure of the entire locking transmission part utilizes three-step gear meshing to compact the structure of the locking transmission part, and the transmission is smoother.

[0054] As an embodiment of the present application, the pull wire 10 is a steel wire rope.

[0055] In order to provide stable tension support for the pulling wire 10, the pulling part 902 is cam-shaped, and the axis of the second transmission gear shaft 9 is located at the large diameter end of the pulling part 902; when the ratchet 1 is in the reset state, the pulling wire 10 is close to the large diameter end of the pulling part 902. When the second transmission gear shaft 9 rotates to the small head end of the pulling part 902, the pulling wire 10 is deformed under the action of the pulling part 902, thereby pulling one end of the paddle 2, causing the paddle 2 to rotate.

[0056] In a specific embodiment, the axis of the power take-off wheel 7 is perpendicular to the axis of the first transmission gear shaft 8 , and the axis of the first transmission gear shaft 8 is parallel to the axis of the second transmission gear shaft 9 .

[0057] In order to facilitate the automatic resetting of the paddle 2, a paddle torsion spring 11 is provided at the paddle rotation center 201 in the locking transmission part, and two legs of the paddle torsion spring 11 are respectively fixed on the paddle 2 and inside the door lock.

[0058] Specifically, the other end of the paddle 2 is configured as a paddle toggle portion 202, and the ratchet 1 is provided with a ratchet toggle portion 103 that matches the paddle toggle portion 202, and the end of the ratchet 1 opposite to the ratchet toggle portion 103 is configured as a ratchet hook portion 104; when the driving motor rotates forward so that the pull wire 10 pulls the paddle 2 to rotate, the paddle toggle portion 202 contacts the ratchet toggle portion 103 and drives the ratchet 1 to rotate, and at the same time, the torque of the paddle torsion spring 11 increases until the ratchet hook portion 104 hooks the lock on the tailgate, and then the driving motor reverses and the pull wire 10 is retracted, and the paddle 2 is reset under the action of the paddle torsion spring 11.

[0059] In order to facilitate the installation and positioning between the rocker arm 4 and the pawl 5: a rocker arm stop portion 402 is provided on the side of the rocker arm 4, and a pawl stop portion 502 matching the rocker arm stop portion 402 is provided on the side of the pawl 5 extending toward the rocker arm 4; specifically, the rocker arm stop portion 402 blocks the upper side of the pawl stop portion 502, and the side of the pawl stop portion 502 contacts the side of the rocker arm 4.

[0060] In order to further improve the connection stability between the unlocking transmission part and the ratchet 1 and avoid jamming when unlocking and closing the lock, the present application also includes a switch lock guide part, which includes

[0061] A first limiting portion 105 and a second limiting portion 106 are provided on the surface of the ratchet 1 , wherein a limiting groove is formed between the first limiting portion 105 and the second limiting portion 106 ; and

[0062] A rocker arm hook portion 403 extends from the surface of the rocker arm 4 toward the ratchet 1, and the rocker arm hook portion 403 hooks the second limiting portion 106 and one end of the rocker arm hook portion 403 is located in the limiting groove; during the locking action of the ratchet 1, the ratchet 1 rotates relative to the rocker arm 4, and during the unlocking action of the ratchet 1, the rocker arm 4 rotates relative to the ratchet 1.

[0063] In order to facilitate the resetting of the locking plate 6, a rocker arm torsion spring 12 is provided at the pawl rotation center 501 in the unlocking transmission part, and two legs of the rocker arm torsion spring 12 are respectively fixed on the rocker arm hook part 403 and inside the door lock.

[0064] In a specific embodiment, the gear shaft toggle portion 301 circles around the lock gear shaft 3 at least once; when the rocker arm 4 rotates to the head of the gear shaft toggle portion 301, it can rebound under the action of the rocker arm torsion spring 12 until it re-contacts the side wall of the gear shaft toggle portion 301, so that the drive motor connected to the third transmission gear shaft 13 does not need to be required to rotate forward or reverse.

[0065] In addition, in order to realize the deceleration transmission of the unlocking transmission part, the unlocking transmission part also includes a third transmission gear shaft 13, and the third transmission pinion 1301 on the third transmission gear shaft 13 is engaged with the third transmission large gear 302 on the unlocking gear shaft 3; the third transmission gear shaft 13 is used to connect the drive motor to provide power for the third transmission pinion 1301.

[0066] In order to facilitate the ratchet 1 to automatically pop open during the unlocking movement, a ratchet torsion spring 14 is provided at the ratchet rotation center 101 of the ratchet 1, and two legs of the ratchet torsion spring 14 are respectively fixed on the ratchet 1 and inside the door lock.

[0067] It can be understood that the ratchet rotation center 101, the paddle rotation center 201, and the pawl rotation center 501 in the present application are respectively used to install the rotation shafts, and each rotation shaft is located inside the tailgate to support the rotational movement of each rotating component.

[0068] Working principle:

[0069] When locking, attach Figure 1Based on the perspective of , the driving motor drives the power output wheel 7 to rotate in the forward direction. After the first transmission gear 801, the second transmission gear 802, and the second transmission gear 901 are reduced in three stages, the pulling part on the second transmission gear shaft 9 rotates counterclockwise. After the pull wire 10 is pulled, it drives the paddle 2 to rotate clockwise. At the same time, the torque of the paddle torsion spring 11 increases, and the paddle toggle part 202 rotates clockwise until it contacts the ratchet toggle part 103, driving the ratchet 1 to rotate counterclockwise. During the counterclockwise rotation of the ratchet 1, the outer wall of the upper side of the ratchet 1 and the locking plate 6 abuts and pushes the locking plate 6 to move upward, and at the same time the torque of the ratchet torsion spring 14 increases, so that the rocker arm 4, the pawl 5, and the locking plate 6 rotate synchronously clockwise around the pawl rotation center 501, and at the same time the torque of the rocker arm torsion spring 12 increases until the ratchet locking part 102 moves to the left end of the locking plate 6. Under the action of the rocker arm torsion spring 12, the locking plate 6 is engaged with the ratchet locking part 102, and the ratchet 1 cannot rotate clockwise. Then the driving motor is reversed to drive the pulling part 902 to release the pull wire 10, the pull wire tension disappears, and the paddle 2 is reset under the action of the paddle torsion spring 11.

[0070] Before unlocking, attach Figure 2 Based on the perspective of , due to the engagement of the locking plate 6 and the ratchet locking part 102, the lower end of the rocker arm toggle part 401 abuts against the gear shaft toggle part 301; when unlocking, the driving motor drives the third transmission gear shaft 13 to rotate counterclockwise, and after the third transmission small gear 1301 and the third transmission large gear 302 are driven and decelerated, the unlocking gear shaft 3 rotates clockwise, so that the gear shaft toggle part 301 rotates clockwise to push the rocker arm toggle part 401 upward, so that the rocker arm 4 revolves around the pawl rotation center 501 It rotates clockwise, and at the same time, the torque of the rocker arm torsion spring 12 increases, and the locking plate 6 rotates synchronously with the rocker arm 4 so that it gradually disengages from the ratchet locking part 102. When the locking plate 6 completely disengages from the ratchet locking part 102, the ratchet 1 is reset under the action of the ratchet torsion spring 14 to complete the unlocking; when the rocker arm toggle part 401 is pushed to the uppermost end of the rocker arm toggle part 401, it is briefly separated from the rocker arm toggle part 401. At this time, the rocker arm is reset under the action of the rocker arm torsion spring 12, and the rocker arm toggle part 401 moves downward to re-abut the rocker arm toggle part 401.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile tailgate lock, characterized in that: It comprises a ratchet (1), a locking transmission part and an unlocking transmission part; The ratchet (1) is capable of rotating around its own ratchet rotation center (101), and a ratchet locking portion (102) is provided on the ratchet (1) to achieve locking and unlocking actions of the ratchet (1); The locking transmission part comprises a paddle (2), and the paddle (2) is capable of rotating around its own paddle rotation center (201); The unlocking transmission part comprises an unlocking gear shaft (3), a rocker arm (4), a pawl (5) and a locking plate (6); a gear shaft toggling part (301) is provided on the unlocking gear shaft (3); the gear shaft toggling part (301) is spirally arranged coaxially with the gear shaft (3); the pawl (5) is capable of rotating around its own pawl rotation center (501); the rocker arm (4) is provided on the side of the pawl (5) and is capable of rotating around the pawl rotation center (501); and the locking plate (6) is provided on the pawl (5); The ratchet rotation center (101), the paddle rotation center (201) and the pawl rotation center (501) are respectively parallel; The locking action of the ratchet (1) is specifically as follows: the paddle (2) rotates to drive the ratchet (1) to rotate in the forward direction until the locking plate (6) abuts against the ratchet locking portion (102); The unlocking action of the ratchet (1) is specifically as follows: the unlocking gear shaft (3) rotates so that the gear shaft toggle portion (301) pushes the rocker arm (4) to rotate around the pawl rotation center (501), and the pawl (5) rotates synchronously to drive the locking plate (6) to move until the locking plate (6) is separated from the ratchet locking portion (102), thereby realizing the reverse rotation and reset of the ratchet (1).

2. The tailgate lock for a vehicle according to claim 1, characterized in that: The locking transmission unit further includes a power output wheel (7), a first transmission gear shaft (8), a second transmission gear shaft (9) and a pull wire (10); One end of the power output wheel (7) is used to connect to the drive motor, the first transmission gear (801) on the first transmission gear shaft (8) is meshed with the power output wheel (7), the second transmission gear (901) on the second transmission gear shaft (9) is meshed with the second transmission pinion (802) on the first transmission gear shaft (8), the pull wire (10) is located on one side of the pulling portion (902), and the two ends of the pull wire (10) are respectively connected to one end of the paddle (2) and the inside of the door lock; When the power is transmitted from the driving motor to the pulling portion (902), the pull wire (10) is pulled by the pulling force of the pulling portion (902) to drive the paddle (2) to rotate.

3. The motor vehicle tailgate lock according to claim 2, characterized in that: The axis of the power output wheel (7) is perpendicular to the axis of the first transmission gear shaft (8), and the axis of the first transmission gear shaft (8) is parallel to the axis of the second transmission gear shaft (9).

4. The car tailgate lock according to claim 3, characterized in that: In the locking transmission part, A paddle torsion spring (11) is provided at the paddle rotation center (201), and two legs of the paddle torsion spring (11) are fixed on the paddle (2) and inside the door lock, respectively.

5. The motor vehicle tailgate lock according to claim 1, characterized in that: In the unlocking transmission part, One end of the rocker arm (4) is configured as a rocker arm toggling portion (401) that matches the gear shaft toggling portion (301). When the gear shaft (3) rotates, the gear shaft toggling portion (301) pushes the rocker arm toggling portion (401) to move, thereby causing the rocker arm (4) to rotate.

6. The tailgate lock for an automobile according to claim 5, wherein: A rocker arm stop portion (402) is provided on the side of the rocker arm (4), and a ratchet stop portion (502) matching the rocker arm stop portion (402) is provided on the side of the ratchet (5) extending toward one side of the rocker arm (4).

7. The car tailgate lock according to claim 6, characterized in that: It also includes a switch lock guide portion, the switch lock guide portion includes A first limiting portion (105) and a second limiting portion (106) are provided on the surface of the ratchet (1), wherein a limiting groove is formed between the first limiting portion (105) and the second limiting portion (106); and A rocker arm hook portion (403) extends from the surface of the rocker arm (4) toward the ratchet (1), wherein the rocker arm hook portion (403) hooks the second limiting portion (106) and one end of the rocker arm hook portion is located in the limiting groove.

8. The car tailgate lock according to claim 7, characterized in that: In the unlocking transmission part, A rocker arm torsion spring (12) is provided at the pawl rotation center (501), and two legs of the rocker arm torsion spring (12) are respectively fixed on the rocker arm hook portion (403) and inside the door lock.

9. The car tailgate lock according to any one of claims 5-8, characterized in that: The unlocking transmission unit further comprises a third transmission gear shaft (13), wherein a third transmission pinion (1301) on the third transmission gear shaft (13) is meshed with a third transmission gearwheel (302) on the unlocking gear shaft (3).

10. The tailgate lock for an automobile according to claim 1, wherein: A ratchet torsion spring (14) is provided at the ratchet rotation center (101) of the ratchet (1), and two legs of the ratchet torsion spring (14) are respectively fixed on the ratchet (1) and inside the door lock.

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