Electric locking mechanism of automobile tail door lock

Abstract

The utility model discloses an electric locking mechanism of an automobile tail door lock, which comprises a clamping plate hinged on a base through a clamping plate shaft, a clamping plate return spring arranged on the base and the clamping plate, a pawl hinged on the base through a pawl shaft, and a pawl return spring arranged on the base and the pawl, the worm is arranged on a motor shaft, the worm gear is meshed with the worm, the lead screw and the worm gear are coaxially fixed, and the sliding block is screwed on the lead screw and changes from rotary motion to linear motion. The sliding block is in shifting connection with the driving plate, the driving plate is in shifting connection with the locking plate, the driving plate and the locking plate are coaxially hinged to the base, and the locking plate is in shifting connection with the clamping plate; the electric locking mechanism of the automobile tail door lock further comprises a starting structure and a resetting structure, wherein the starting structure is used for enabling the locked motor to rotate reversely so that the sliding block can reset, and the resetting structure enables the driving plate and the locking plate to reset. The electric locking mechanism of the automobile tail door lock is relatively simple and compact in structure.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, specifically an electric locking mechanism for an automotive tailgate lock. Background Technology

[0002] Early car tailgates were usually closed manually by pressing down, but due to varying degrees of force, the tailgate lock was often not fully locked, but rather in a half-locked state, posing a safety hazard while the car was in motion.

[0003] Later, a type of electrically operated tailgate lock, also known as an electrically self-closing tailgate lock, gradually emerged. When the tailgate was in a half-locked state, the car's BCM (Body Control Module) detected and activated the electrically locking mechanism, or electrically self-closing mechanism, to move the tailgate lock from the half-locked state to the fully locked state, essentially preventing safety accidents. However, the electrically locking mechanism of the tailgate locks of this period was driven by a motor via a worm gear and gear set, which in turn drove the locking components to lock. The gear set used multiple gears, making the structure relatively complex and the material cost relatively high.

[0004] In recent years, some technicians have adopted a nut-screw pair structure, in which the motor drives the screw to rotate via a worm gear, which in turn drives the nut or slider to make linear motion to achieve the electric locking process, thus overcoming the shortcomings of the above-mentioned existing technologies.

[0005] However, the existing electric locking mechanisms of car tailgate locks using the nut and screw pair structure all employ a slider that actuates a locking plate via a drive plate and a locking plate to overcome the spring force of the locking plate's return spring, thus achieving full locking. However, this design still has the following shortcomings: 1. The drive plate and locking plate of the electric locking mechanism are hinged to housings at different locations and engage with each other via arc-shaped grooves and levers. This results in a relatively complex and loose structure, leading to significant force loss during the electric locking process and affecting transmission efficiency. 2. The slider can only actuate the locking plate via multiple connecting plates on the side closest to the worm gear, limiting the installation position of the electric locking mechanism and narrowing the applicability of various tailgate lock structures. 3. The drive plate and locking plate are self-contained locking components and cannot be linked with the emergency release and engagement interruption mechanisms of the car tailgate lock, making the structure of the car tailgate lock relatively complex and increasing component costs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an electric locking mechanism for a car tailgate lock that has a relatively simple and compact structure.

[0007] The technical solution of this utility model is to provide an electric locking mechanism for a car tailgate lock, including a plate hinged to a base via a plate hinge shaft, a plate return spring provided on the base and the plate, a pawl hinged to the base via a pawl hinge shaft, a pawl return spring provided on the base and the pawl, a motor, a worm gear on the motor shaft and a worm wheel meshing with the worm gear, a lead screw fixed coaxially with the worm wheel and a slider screwed on the lead screw and whose rotational motion is converted into linear motion; the slider is movably connected to a drive plate, the drive plate is movably connected to a locking plate, the drive plate and the locking plate are coaxially hinged to a base, and the locking plate is movably connected to the plate hinge shaft; the electric locking mechanism for the car tailgate lock also includes a starting structure for reversing the motor after locking to reset the slider and a reset structure for resetting the drive plate and the locking plate.

[0008] With the above structure, the electric locking mechanism of this utility model's car tailgate lock has the following advantages: Because a linearly moving slider with a nut and screw pair replaces multiple gears in the gear set, its structure is relatively simple, and material costs are relatively reduced. In particular, because the slider is connected to the drive plate, the drive plate is connected to the locking plate, the drive plate and the locking plate are coaxially hinged on the base, and the locking plate is connected to the locking plate, the electric locking mechanism has a simple structure, flexible cooperation between components, no significant force loss during transmission, and a significantly improved transmission efficiency.

[0009] Furthermore, a lever is provided on the side of the slider away from the base and near the worm gear. The upper end of the drive plate is a lever that cooperates with the lever to actuate. A reset connecting plate has a protruding post protruding forward towards the front of the base on the side of the drive plate near the worm gear. The protruding post is movably fitted in a through hole on the side plate of the drive plate near the worm gear and abuts against an arc-shaped groove on the upper end of the locking plate near the worm gear to actuate. The end of the reset connecting plate away from the worm gear is hinged to the top of the release plate that is hinged to the base via the release plate shaft. With the above structure, the connection and disengagement of the slider and drive plate are more stable and reliable. The slider, via the drive plate and locking plate coaxially hinged to the base, actuates the locking plate to lock, significantly reducing the arrangement requirements of the relative position of the slider and the locking plate. The shape, position, and connection relationship of specific components can be set according to the slider's running direction (e.g., straight leftward movement) and the slider's position relative to the locking plate (e.g., a certain distance). The slider can actuate the drive plate on the side away from the worm gear, making the installation position within the tailgate lock housing more flexible and expanding its applicability to various tailgate lock structures. Furthermore, since the drive plate and locking plate of the locking mechanism are connected to the reset connecting plate (or interruption plate) and release plate, they can be linked with the tailgate lock's emergency release and engagement interruption mechanism. That is, in the tailgate lock's emergency release and interruption mechanism, only an emergency release plate coaxially hinged to the release plate shaft and an actuation structure are needed to achieve the emergency interruption function, making the tailgate lock structure relatively simple and compact, and relatively saving on tailgate lock component costs.

[0010] Furthermore, the reset structure for resetting the locking plate is a locking plate reset torsion spring. The torsion spring body is fitted onto a torsion spring post on the base, one end of the locking plate reset torsion spring is engaged with the base, and the other end is engaged with the locking plate. With this structure, the locking plate reset torsion spring makes the locking plate return to its initial position more quickly, stably, and reliably after locking by moving the locking plate's pawl.

[0011] Furthermore, the reset structure for resetting the drive plate consists of a release plate reset torsion spring that resets the release plate and, via a hinged reset connecting plate, drives the drive plate to reset. The torsion spring body is fitted onto a torsion spring post on the base, one end of the release plate reset torsion spring is engaged with the base, and the other end is engaged with the release plate. This structure allows for dual-purpose use of a single spring, making the structure more compact and saving one torsion spring. It also improves the linkage effect in the emergency release and interruption mechanism of the tailgate lock.

[0012] Furthermore, the lower end of the drive plate near the front seat has a limiting pawl, and the lower end of the locking plate near the rear seat has a limiting post for the drive plate to abut against the limiting position when resetting. This structure ensures reliable and stable resetting of the locking plate to its initial position after locking, making the movement and resetting process of the drive plate and locking plate faster, more stable, and more reliable.

[0013] Furthermore, the starting structure for reversing the motor after locking to reset the slider is as follows: a signal switch for detecting the linear movement position of the slider is fixed on the base, and the signal switch is electrically connected to the BCM of the car, which controls the forward and reverse rotation of the motor. With the above structure, after locking, within a set time, when the signal switch detects the linear movement of the slider and disengages its contacts, it transmits an electrical signal to the car's electronic control unit, such as the BCM. The BCM then controls the motor to reverse to reset the slider to its initial position, making the motor reversal after locking to reset the slider faster, more stable, and more reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external shape of a car tailgate lock equipped with the electric locking mechanism of this utility model.

[0015] Figure 2 This is a schematic diagram of the preferred embodiment of the electric locking mechanism of this utility model, when it is installed on the base and seat of a car tailgate lock, with the front seat and cover plate omitted, and the slider in the initial position and the locking plate in the fully locked position.

[0016] Figure 3 This is a schematic diagram of the preferred embodiment of the electric locking mechanism of this utility model, showing the initial position of the slider and the semi-locked position of the locking plate. Figure 1 .

[0017] Figure 4 This is a schematic diagram of the preferred embodiment of the electric locking mechanism of this utility model, showing the initial position of the slider and the semi-locked position of the locking plate. Figure 2 .

[0018] Figure 5 This is a schematic diagram of the preferred embodiment of the electric locking mechanism of this utility model, showing the initial position of the slider and the unlocked position of the locking plate. Figure 1 .

[0019] Figure 6 This is a schematic diagram of the preferred embodiment of the electric locking mechanism of this utility model, showing the initial position of the slider and the unlocked position of the locking plate. Figure 2 .

[0020] Figure 7 This is an enlarged structural schematic diagram of the drive plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0021] Figure 8 This is an enlarged structural schematic diagram of the locking plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0022] Figure 9 This is an enlarged structural schematic diagram of the reset connecting plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0023] Figure 10 This is an enlarged structural schematic diagram of the release plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0024] As shown in the figure:

[0025] 1. Shell; 11. Base; 111. Rear seat; 112. Front seat; 12. Base; 121. Base plate; 122. Cover plate;

[0026] 21. Clamping plate shaft; 22. Clamping plate; 23. Clamping plate return spring; 24. Pawl shaft; 25. Pawl; 26. Pawl return spring.

[0027] 31. Motor; 32. Worm; 33. Worm wheel; 34. Lead screw; 35. Slider; 351. First arc-shaped lever; 36. Bearing;

[0028] 4. Drive plate; 41. Lever; 42. Side plate; 421. Long through hole; 4211. Opening; 43. Limiting claw; 44. First pin hole.

[0029] 51. Locking plate; 511. Arc-shaped groove; 512. Second arc-shaped lever; 513. Torsion spring limiting hole; 514. Limiting post; 52. Locking plate reset torsion spring; 53. Second pin hole.

[0030] 6. Reset connecting plate, 61. Protruding post, 62. Third pin hole;

[0031] 71. Release plate; 711. Torsion spring locking block; 72. Release plate shaft; 73. Release plate reset torsion spring; 74. Fourth pin hole; 75. Fifth pin hole.

[0032] 81. Cardboard signal switch; 82. Slider signal switch;

[0033] 9. Hinge pin;

[0034] 10. Pins. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions of specific embodiments are intended to aid in understanding this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various specific embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown.

[0037] The housing 1 of the car tailgate lock may include a vertical base 11 and a horizontal base 12. The base 11 may include a rear seat body 111 and a front seat body 112. The base 12 may include a bottom plate 121 and a cover plate 122. The interior of the base 11 and the interior of the base 12 are in communication with each other.

[0038] A preferred embodiment of the electric locking mechanism of this utility model's automotive tailgate lock includes a latching plate 22 hinged to a base 12 via a latching plate shaft 21, a latching plate return spring 23 (e.g., a torsion spring) provided on the base 12 and the latching plate 22, a pawl 25 hinged to the base 12 via a pawl shaft 24, and a pawl return spring 26 (e.g., a torsion spring) provided on the base 12 and the pawl 25. The bottom ends of both the latching plate shaft 21 and the pawl shaft 24 can be fixed, for example, integrally formed on the base plate 121 of the base 12. The pawl 25 can be a plastic-coated pawl, and the latching plate 22 can be a plastic-coated latching plate. The plastic coating serves to reduce noise and extend service life. The pawl 25 is also called a stop pawl. The latching plate 22 is also called a ratchet or locking tongue. A locking rod or locking post provided on the tailgate body, which cooperates with the U-shaped groove of the latching plate 22 to lock the tailgate, is not shown in the figure.

[0039] A preferred embodiment of the electric unlocking mechanism of this utility model's automotive tailgate lock further includes a motor 31, a worm gear 32 on the motor shaft, a worm wheel 33 meshing with the worm gear 32, a lead screw 34 coaxially fixed with the worm wheel 33, and a slider 35 screwed onto the lead screw 34 and converting rotational motion into linear motion. It is easy to understand that the slider 35 is actually the nut in a nut-screw pair, because the nut screwed onto the lead screw 34 converts rotational motion into linear motion during the rotation of the lead screw 34. The nut here actually functions as the slider 35; therefore, for simplicity and clarity, the nut here is directly referred to as the slider 35. The electric locking mechanism is also called an electric locking mechanism, an electric engaging mechanism, an electric self-locking mechanism, or an electric self-locking mechanism. It is easy to understand that the motor 31 can be fixed in the base 11 by means of a snap-fit ​​or screw. The lead screw 34 can be fixed coaxially with the center hole of the worm gear 33 by a key or pin. One end of the lead screw 34 extends axially out of one side of the worm gear 33. Both ends of the lead screw 34 can be rotated and fitted on the base 11 by their respective bearings 36.

[0040] In a preferred embodiment of the electric unlocking mechanism for the tailgate lock of this utility model, a plate signal switch 81 for detecting the rotational position of the plate 22 is fixed on the base. The plate signal switch 81 is electrically connected to the vehicle's BCM (Body Control Module). Similarly, the motor 31 is also electrically connected to the vehicle's electronic control components, such as the BCM.

[0041] The above are existing technologies.

[0042] The inventive points of this utility model are as follows.

[0043] In a preferred embodiment of the electric unlocking mechanism for a car tailgate lock, the slider 35 is movably connected to the drive plate 4, the drive plate 4 is movably connected to the locking plate 51, the drive plate 4 and the locking plate 51 are coaxially hinged on the base 11, and the locking plate 51 is movably connected to the latch plate 22. The coaxial hinge can be achieved by the first pin hole 44 of the drive plate 4 and the second pin hole 53 of the locking plate 51 rotatably engaging on the same pin 10 fixed on the base 11. Its specific structure can be as follows: A lever, such as a first arc-shaped lever 351, is provided on the side of the slider 35 away from the base 11 and near the worm gear 33. The upper end of the drive plate 4 is a lever 41 that cooperates with the lever 351 for actuation. A reset connecting plate 6 has a protruding post 61 protruding forward towards the front seat 112 of the base 11 on its end near the worm gear 33. The protruding post 61 is movably fitted into a through hole on the side plate 42 of the drive plate 4 near the worm gear 33, and abuts against an arc-shaped groove 511 on the upper end of the locking plate 51 near the worm gear 33 for actuation connection. The end of the reset connecting plate 6 away from the worm gear 33 is hinged to the top of the release plate 71, which is hinged to the base 11 via the release plate shaft 72, such that the fifth pin hole 75 of the release plate 71 is rotatably fitted onto the release plate shaft 72. The actuation connection can also be understood as the two forming an actuation connection, that is, the relationship between the two is a actuating and being actuated relationship. The lever 41 can also be called a pawl. The protruding post 61 can also be called a pawl.

[0044] The specific structure of the reset connecting plate 6, which is away from the worm gear 33, and the top of the release plate 71 is as follows: the reset connecting plate 6, which is away from the worm gear 33, has a third pin hole 62, such as a circular pin hole, and the top of the release plate 71 has a fourth pin hole 74, such as a circular pin hole, on the same axis. A hinge pin 9, or pin shaft, is rotatably fitted in the two pin holes. The two ends of the hinge pin 9 may have axial limiting structures, such as one end of the hinge pin 9 being a shoulder or a large head, and the other end being axially limited by a cotter pin or nut.

[0045] It is easy to understand that, regarding the electric locking mechanism of this car tailgate lock, the through hole that mates with the protrusion 61 can be a circular through hole, and the movable fit between the protrusion 61 and the circular through hole can be a rotational fit. However, as a tailgate lock that combines an unlocking mechanism, a locking mechanism, and an emergency release and interruption mechanism, in order to ensure that the through hole meets the needs of the emergency release and interruption functions, the through hole is an elongated through hole 421. The movable fit between the protrusion 61 and the elongated through hole 421 is a sliding fit in addition to a rotational fit. The elongated through hole 421 can be an elongated through hole 421 with an opening 4211 or a notch, so that the protrusion 61 can easily move in and out laterally during assembly and disassembly. The bottom end of the locking plate 51 may have an arc-shaped lever, such as a second arc-shaped lever 512, facing the locking plate 22. The lever connection between the locking plate 22 and the second arc-shaped lever 512 is a lever part 221 with multiple vertical surfaces. The arc surface of the second arc-shaped lever 512 is lever-connected to one vertical surface of the lever part 221. The drive plate 4 is also called the locking drive plate, or the self-priming drive plate, or the suction drive plate. The locking plate 51 is also called the self-priming plate or the suction plate.

[0046] The electric locking mechanism of the car tailgate lock further includes a starting structure for reversing the motor 31 after locking to reset the slider 35, and a reset structure for resetting the drive plate 4 and the locking plate 51.

[0047] The starting structure for reversing the motor 31 after locking to reset the slider 35 can be as follows: a slider signal switch 82 for detecting the linear movement position of the slider 35 is fixed on the base 11. The slider signal switch 82 is electrically connected to the vehicle's BCM (Body Control Module), which controls the forward and reverse rotation of the motor 31. It is easy to understand that being able to control the forward and reverse rotation of the motor 31 means being able to control both forward and reverse rotation of the motor 31, although the forward and reverse rotations do not occur at the same time. Linear movement is also called linear motion.

[0048] The reset structure for resetting the locking plate 51 can be a locking plate reset torsion spring 52. The torsion spring body of the locking plate reset torsion spring 52 is sleeved on a torsion spring post of the base 11. One end of the locking plate reset torsion spring 52 is engaged with the base 11, and the other end of the locking plate reset torsion spring 52 is engaged with the locking plate 51, such as hooking into a torsion spring limiting hole 513 of the locking plate 51.

[0049] The reset structure for resetting the drive plate 4 can be a release plate reset torsion spring 73 that resets the release plate 71 and drives the drive plate 4 to reset via a reset connecting plate 6 that is hinged to it. The torsion spring body of the release plate reset torsion spring 73 is sleeved on a torsion spring post of the base 11. One end of the release plate reset torsion spring 73 is engaged with the base 11, and the other end is engaged with the release plate 71, such as the torsion spring engaging block 711. Figure 3 and Figure 5As shown in the diagram, it is easy to understand that when the release plate 71 is reset to its initial position, its lower end is far away from the pawl 25. At the same time, when the drive plate 4 rotates counterclockwise and drives the locking plate 51 to move the locking plate 22 to lock, the release plate 71 is driven to rotate clockwise via the reset connecting plate 6. The lower end of the release plate 71 is only close to the pawl 25 and does not move the pawl 25.

[0050] A limiting claw 43 may be provided on the lower end of the drive plate 4 near the front seat 112, and a limiting post 514 for the drive plate 4 to abut against the limiting position when it is reset is provided on the lower end of the locking plate 51 near the rear seat 111.

[0051] It is easy to understand that the reset connecting plate 6 is a component in the emergency release and interruption mechanism of the tailgate lock, referred to as the interruption plate in the emergency release and interruption mechanism. In the embodiment of the electric locking mechanism of the tailgate lock of this utility model, it serves both to engage the locking plate 51 and to reset the drive plate 4 to its initial position. Therefore, the reset connecting plate 6 can also be called the interruption plate. The release plate 71 and the release plate reset torsion spring 73 are components in the tailgate lock unlocking mechanism. In the embodiment of the electric locking mechanism of the tailgate lock of this utility model, they serve both to reset the drive plate 4 to its initial position. Therefore, the release plate 71 can also be called the reset linkage plate, and the release plate reset torsion spring 73 can also be called the linkage plate reset torsion spring. Hinge and rotational engagement have the same meaning; rotational engagement is also called rotational connection.

[0052] like Figures 1-6 As shown, the electric locking mechanism of this car tailgate lock operates as follows:

[0053] 1. In the initial position, the card signal switch 81 detects that the card 22 is in the semi-locked position, and transmits an electrical signal to the vehicle's BCM. The vehicle's BCM then controls the motor 31 to drive the worm 32 to rotate. The worm 32 meshes with the worm wheel 33, which rotates. The worm wheel 33 drives the lead screw 34 to rotate. The nut screwed on the lead screw 34, i.e., the slider 35, changes from rotational motion to linear motion, that is, the slider 35 moves linearly to the left. The initial position mentioned here refers to... Figure 2 , Figure 3 and Figure 4 The slider 35, drive plate 4, locking plate 51, reset connecting plate 6, and release plate 71 shown are in their initial positions. At this time, the tailgate is in a semi-locked position due to manual pressing, where the locking plate 22 and the pawl 25 cooperate. The semi-locked position is also called the semi-locked state.

[0054] 2. The slider 35 moves the lever 41 at the upper end of the drive plate 4 and drives the entire drive plate 4 to overcome the spring force of the release plate reset torsion spring 73 and rotate counterclockwise around its own axis.

[0055] 3. The drive plate 4, via the protrusion 61, pushes the locking plate 51 to overcome the spring force of the locking plate reset torsion spring 52 and rotates counterclockwise around its own axis.

[0056] 4. The bottom end of the locking plate 51 actuates the latch plate 22 and overcomes the spring force of the latch plate return spring 23 (or the latch plate return torsion spring), rotating around its own axis to enter the fully locked state. At this time, the reset connecting plate 6 moves to the right and drives the release plate 71 to rotate clockwise around its own axis, approaching the pawl 25 but not actuating the pawl 25. The fully locked state is also called the locked state, or the fully locked position, or the locked position.

[0057] 5. After the lock is engaged, within a set time, when the slider signal switch 82 detects that the slider 35 has moved linearly and the top of the slider 35 has disengaged from the contact of the slider signal switch 82, it immediately transmits an electrical signal to the vehicle's BCM. The vehicle's BCM then controls the motor 31 to reverse, causing the slider 35 to return to its initial position. At this time, the release plate 71 rotates counterclockwise to return to its initial position under the spring force of the release plate return torsion spring 73, and drives the drive plate 4 to rotate clockwise to return to its initial position via the return connecting plate 6 and the protrusion 61 on the return connecting plate 6. The locking plate 51 rotates clockwise to return to its initial position under the spring force of the locking plate return torsion spring 52. The spring force is also called the spring action force.

[0058] Components, structures, or quantities not marked above are not shown in the drawings, and some components are not marked in the drawings. The drawings are for illustrative purposes only. In case of any inconsistency between the drawings and the text description, or between the drawings themselves, the text description shall prevail.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric locking mechanism for a car tailgate lock, comprising a plate hinged to a base via a plate hinge shaft, a plate return spring disposed on the base and the plate, a pawl hinged to the base via a pawl hinge shaft, a pawl return spring disposed on the base and the pawl, a motor, a worm gear on the motor shaft, and a worm wheel meshing with the worm gear, a lead screw fixed coaxially with the worm wheel, and a slider screwed onto the lead screw and whose rotational motion is converted into linear motion; characterized in that: The slider is connected to the drive plate, the drive plate is connected to the locking plate, the drive plate and the locking plate are coaxially hinged on the base, and the locking plate is connected to the latch plate. The electric locking mechanism of the car tailgate lock also includes a starting structure for reversing the motor after locking to reset the slider and a reset structure for resetting the drive plate and the locking plate.

2. The electric locking mechanism of the automobile tailgate lock according to claim 1, characterized in that: A lever is provided on the side of the slider away from the base and near the worm gear. The upper end of the drive plate is a lever that cooperates with the lever to actuate it. A reset connecting plate has a protruding post protruding forward towards the front of the base on the side of the drive plate near the worm gear. The protruding post is movably fitted into a through hole in the side plate of the drive plate near the worm gear and abuts against an arc-shaped groove on the upper end of the locking plate near the worm gear to actuate it. The end of the reset connecting plate away from the worm gear is hinged to the top of the release plate that is hinged to the base via the release plate shaft.

3. The electric locking mechanism of the car tailgate lock according to claim 2, characterized in that: The reset structure that resets the locking plate is a locking plate reset torsion spring. The torsion spring body is fitted onto a torsion spring post on the base. One end of the locking plate reset torsion spring is engaged with the base, and the other end is engaged with the locking plate.

4. The electric locking mechanism of the automobile tailgate lock according to claim 2, characterized in that: The reset structure that resets the drive board is a release plate reset torsion spring that resets the release plate and drives the drive board to reset via a reset connecting plate that is hinged to each other. The torsion spring body of the release plate reset torsion spring is sleeved on a torsion spring column of the base. One end of the release plate reset torsion spring is engaged with the base, and the other end of the release plate reset torsion spring is engaged with the release plate.

5. The electric locking mechanism of the car tailgate lock according to claim 4, characterized in that: There is a limiting pawl on the lower end of the drive plate near the front seat, and there is a limiting post on the lower end of the locking plate near the rear seat for the drive plate to abut against the limit when it is reset.

6. The electric locking mechanism of the automobile tailgate lock according to claim 1, characterized in that: The starting structure for reversing the motor after locking to reset the slider is as follows: a signal switch for detecting the linear movement position of the slider is fixed on the base, and the signal switch is electrically connected to the BCM of the car that can control the forward and reverse rotation of the motor.

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