Emergency release and pull-in interruption mechanism of automobile tail door lock

Abstract

The utility model discloses an emergency release and pull-in interruption mechanism of an automobile tail door lock, which is characterized in that a driving plate and a locking plate are coaxially hinged on a base, and the locking plate is in toggle connection with a clamping plate; a shifting block is arranged at the end, close to the worm gear, of the face, away from the base rear seat body, of the sliding block, a shifting rod matched with the shifting block to achieve shifting connection is arranged at the upper end of the driving plate, and an interruption plate pin protruding forwards towards the base front seat body is arranged at the end, close to the worm gear, of an interruption plate. The interruption plate pin is in sliding fit in a long through hole in a side plate, close to one side of the worm gear, of the driving plate and abuts against an arc-shaped groove in one side, close to the worm gear, of the upper end of the locking plate so as to be in stirring connection. The end, away from the worm gear, of the interruption plate is hinged to the top end of a release plate hinged to the base through a release plate shaft. An emergency release plate provided with a manual shifting end is coaxially hinged to the release plate shaft, and the emergency release plate is in shifting connection with the release plate. The emergency release and pull-in interruption mechanism is relatively simple and compact in structure and flexible and reliable to operate.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, specifically an emergency release and engagement interruption 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 accidents. However, the electrically unlocking and locking mechanisms of the tailgate locks of this period were driven by a motor via a worm gear and gear set, which in turn drove the unlocking component to unlock and the locking component 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] In actual use, sometimes mechanical or electrical malfunctions of the electric tailgate lock itself or a power outage of the entire vehicle may occur, preventing the electric tailgate lock from opening. Generally, there are two states: one is that the tailgate lock is in the fully locked position and the locking mechanism has been reset, requiring only manual emergency unlocking; the other is that the tailgate lock is in the fully locked position and the locking mechanism is still in the working position against the latch, requiring manual emergency unlocking and manual interruption of the engagement.

[0006] However, the emergency release and engagement interruption mechanism for car tailgate locks, which is based on the electric unlocking and locking mechanisms of the aforementioned nut-screw pair structure, still has the following shortcomings: 1. Generally, the electric unlocking mechanism, electric locking mechanism, and manually operated emergency release and engagement interruption mechanism are all self-contained systems, each consisting of separate components. Their compatibility and interoperability are insufficient, leading to inadequate reliability of the emergency release and engagement interruption. Furthermore, the structure of the emergency release and engagement interruption mechanism, as well as the tailgate lock itself, is relatively complex, increasing component costs. 2. The components in the emergency release and engagement interruption 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, requiring improvement in the flexibility, stability, and reliability of manual emergency release or simultaneous engagement interruption operation. 3. Generally, a pull cable is required for remote operation, and the strength, flexibility, and reliability of the operation need improvement. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an emergency release and engagement interruption mechanism for a car tailgate lock that is relatively simple and compact in structure and flexible and reliable in operation.

[0008] The technical solution of this utility model is to provide an emergency release and engagement interruption mechanism for a car tailgate lock, including a latch plate hinged to a base via a latch plate shaft, a latch plate return spring provided on the base and the latch plate, a pawl hinged to the base via a pawl 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 onto the lead screw and whose rotational motion is converted into linear motion; a drive plate and a locking plate are coaxially hinged to a base, and the locking plate is movably connected to the latch plate; a side of the slider away from the base and near the end of the worm wheel is provided with... A lever is attached to the upper end of the drive plate for actuation. An interrupt plate has a pin protruding forward from the front of the base at one end near the worm gear. The pin slides in a long 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 for actuation. The end of the interrupt plate away from the worm gear is hinged to the top of the release plate, which is hinged to the base via the release plate shaft. An emergency release plate with a manual actuation end is coaxially hinged to the release plate shaft and actuated with the release plate. An emergency release plate return spring is provided on the emergency release plate and the base.

[0009] With the above structure, the emergency release and engagement interruption mechanism of the automobile tailgate lock of this utility model has the following advantages:

[0010] Because the linear motion of the slider of the nut screw pair is used instead of multiple gears in the gear set, its structure is relatively simple and the material cost is relatively reduced.

[0011] Especially:

[0012] The manually operated emergency release and engagement interruption mechanism, along with the electric unlocking and electric locking mechanisms, are interconnected and their components are linked. For example, the release plates of the electric locking and unlocking mechanisms are linked, while the emergency release and engagement interruption mechanism only requires adding an interconnected emergency release plate and a return spring to the electric locking mechanism. This significantly improves the reliability of emergency release and engagement interruption. Furthermore, the structure of the emergency release and engagement interruption mechanism of the car tailgate lock is relatively simple and compact, resulting in relatively low component costs. The reliability and stability of emergency release and engagement interruption are also good.

[0013] Furthermore, since the emergency release plate of the emergency release and engagement interruption mechanism is coaxially hinged and driven to connect with the release plate of the electric unlocking mechanism, and the interruption plate pin of the emergency release and engagement interruption mechanism is linearly slidingly engaged with the elongated through hole of the drive plate of the electric locking mechanism, the structure of the emergency release and engagement interruption mechanism is simpler, more compact and reliable, the cooperation between the parts is more flexible and reliable, and the flexibility, stability and reliability of manual emergency release or simultaneous engagement interruption operation are greatly improved.

[0014] Furthermore, the front body of the base has an arc-shaped through hole, and the toggle block of the manual toggle end of the emergency release plate is inserted and fixed to the hollow pin of a knob that slides within the arc-shaped through hole. With the above structure, manual emergency release or simultaneous engagement interruption does not require remote operation with a pull cord as in the existing technology, which makes the operation more powerful, flexible, stable and reliable.

[0015] Furthermore, the end of the emergency release plate furthest from the manual actuation end has a passive pawl that actuates the release plate, causing it to rotate counterclockwise. This structure further improves the flexibility, stability, and reliability of manual emergency release. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the preferred embodiment of the electric emergency release and engagement interruption mechanism of this utility model, showing the initial position of the slider and the fully locked position of the locking plate. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the preferred embodiment of the electric emergency release and engagement interruption mechanism of this utility model, showing the initial position of the slider and the fully locked position of the locking plate. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of the preferred embodiment of the electric emergency release and engagement interruption mechanism of this utility model when the slider and other parts are in the electric locking position and the plate is in the fully locked position.

[0019] Figure 4 This is a schematic diagram of the exterior of a car tailgate lock equipped with a preferred embodiment of the emergency release and engagement interruption mechanism of this utility model (maximum open position at the toggle switch).

[0020] Figure 5 This is a schematic diagram of the preferred embodiment of the emergency release and engagement interruption mechanism of this utility model, which is installed on the base and seat of a car tailgate lock, with the front seat and cover plate omitted, and the toggle switch of the emergency release and engagement interruption mechanism in the maximum position and the locking plate in the unlocked position.

[0021] Figure 6 This is a schematic diagram of the structure of the emergency release and engagement interruption mechanism of the present invention when the toggle switch is in the maximum open position and the locking plate is in the unlocked position.

[0022] Figure 7 This is an enlarged structural diagram of the back of the dial in a preferred embodiment of the electric locking mechanism of this utility model.

[0023] Figure 8 This is an enlarged structural schematic diagram of the emergency release plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0024] Figure 9 This is an enlarged structural schematic diagram of the emergency release plate reset spring in a preferred embodiment of the electric locking mechanism of this utility model.

[0025] Figure 10 This is an enlarged structural schematic diagram of the drive plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0026] Figure 11 This is an enlarged structural schematic diagram of the locking plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0027] Figure 12 This is an enlarged structural schematic diagram of the interrupt plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0028] Figure 13 This is an enlarged structural schematic diagram of the release plate in a preferred embodiment of the electric locking mechanism of this utility model.

[0029] As shown in the figure:

[0030] 1. Shell; 11. Base; 111. Rear seat; 112. Front seat; 1121. Arc-shaped through hole; 12. Base; 121. Base plate; 122. Cover plate.

[0031] 21. Clamping plate shaft; 22. Clamping plate; 23. Clamping plate return spring; 24. Pawl shaft; 25. Pawl; 26. Pawl return spring.

[0032] 31. Motor; 32. Worm; 33. Worm wheel; 34. Lead screw; 35. Slider; 351. First arc-shaped lever; 36. Bearing;

[0033] 4. Drive plate; 41. Lever; 42. Side plate; 421. Long through hole; 4211. Opening; 43. Limiting claw; 44. First pin hole.

[0034] 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.

[0035] 6. Interrupt plate; 61. Interrupt plate pin; 62. Third pin hole;

[0036] 71. Release plate; 711. Torsion spring locking block; 712. Passive claw; 72. Release plate shaft; 73. Release plate reset torsion spring; 74. Fourth pin hole; 75. Fifth pin hole.

[0037] 81. Cardboard signal switch; 82. Slider signal switch;

[0038] 91. Emergency release plate; 911. Manual toggle end; 9111. Toggle block; 912. Toggle claw; 913. Torsion spring engaging protrusion; 914. Sixth pin hole; 92. Toggle button; 921. Hollow toggle post; 9211. Blind hole; 93. Emergency release plate reset spring.

[0039] 101. Pin;

[0040] 102. Hinge pin. Detailed Implementation

[0041] 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.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown.

[0043] 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.

[0044] The emergency release and engagement interruption mechanism of the car tailgate lock can also be described as the emergency release / engagement interruption mechanism of the car tailgate lock, or the mechanism for emergency release and engagement interruption of the car tailgate lock.

[0045] A preferred embodiment of the emergency release and engagement interruption mechanism for a car tailgate lock of this utility model 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 lever provided on the tailgate body that cooperates with the U-shaped groove of the latching plate 22 to lock the tailgate is not shown in the figure.

[0046] A preferred embodiment of the emergency release and engagement interruption mechanism for a car tailgate lock of this utility model 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 engagement 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.

[0047] In a preferred embodiment of the emergency release and engagement interruption mechanism for the tailgate lock of this utility model, a card plate signal switch 81 for detecting the rotational position of the card plate 22 is fixed on the base 11. The card plate signal switch 81 is electrically connected to the vehicle's BCM (Body Control Module) and can provide electrical signals for control purposes. Of course, the motor 31 is also electrically connected to the vehicle's electrical control components, such as the BCM.

[0048] The above are existing technologies.

[0049] The inventive points of this utility model are as follows.

[0050] In a preferred embodiment of the emergency release and engagement interruption mechanism of the tailgate lock, a drive plate 4 and a locking plate 51 are coaxially hinged to a base 11, and the locking plate 51 is movably connected to a latching plate 22. 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 engages with the lever, such as the first arc-shaped lever 351, for movable connection. An interruption plate 6 has an interruption plate pin 61 protruding forward towards the front base 112 on the end near the worm gear 33. The interruption plate pin 61 is slidably engaged in a long through hole 421 on the side plate 42 of the drive plate 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 movable connection. The end of the interrupt 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. An emergency release plate 91 with a manual actuation end 911 is coaxially hinged to the release plate shaft 72. The emergency release plate 91 and the release plate 71 are connected by a lever. Specifically, the end of the emergency release plate 91 away from the manual actuation end 911 has a driven pawl 712 that actuates the release plate 71, causing it to rotate counterclockwise. The lever 41 can also be called a pawl. The interrupt plate pin 61 is also called a protrusion or a lever post.

[0051] An emergency release plate reset spring 93 is provided on the emergency release plate 91 and the base 11. The specific structure can be as follows: the emergency release plate reset spring 93 is a torsion spring, the torsion spring body is sleeved on the release plate shaft 72, one end of the torsion spring is engaged with the torsion spring engaging protrusion 913 on the emergency release plate 91, and the other end of the torsion spring is engaged with the base 11.

[0052] The front seat 112 of the base 11 has an arc-shaped through hole 1121. The actuating block 9111 of the manual actuating end 911 of the emergency release plate 91 is inserted and fixed to the hollow pin 921 of the knob 92, which is slidably fitted in the arc-shaped through hole 1121. The actuating block 9111 is interference-fitted in the blind hole 9211 of the hollow pin 921. The hollow pin 921 can be a rectangular hollow pin 921 that matches the shape and size of the rectangular actuating block 9111. The blind hole 9211 can be a rectangular blind hole 9211, which can also be called a groove.

[0053] The elongated through hole 421 may have an opening 4211 at one end near the worm gear 33. With the above structure, the length of the elongated through hole 421 can be extended on the side plate 42 of the same length. The opening 4211 can also be called a notch.

[0054] The drive plate 4 and the locking plate 51 are coaxially hinged, and the first pin hole 44 of the drive plate 4 and the second pin hole 53 of the locking plate 51 can be rotatably engaged on the same pin 101 fixed on the base 11.

[0055] The release plate 71 is hinged to the base 11 via the release plate shaft 72. Specifically, the fifth pin hole 75 of the release plate 71 is rotatably engaged with the release plate shaft 72. The emergency release plate 91 is coaxially hinged to the release plate shaft 72. Specifically, the sixth pin hole 914 of the emergency release plate 91 is rotatably engaged with the release plate shaft 72.

[0056] A toggle connection can also be understood as the two parties forming a toggle connection, that is, the relationship between the two parties is a toggle and being toggled relationship.

[0057] The specific structure of the hinged connection between the end of the interrupting plate 6 away from the worm gear 33 and the top of the release plate 71 can be as follows: The end of the interrupting plate 6 away from the worm gear 33 has a third pin hole 62 (e.g., a circular pin hole), and the top of the release plate 71 has a fourth pin hole 74 (e.g., a circular pin hole) on the same axis. A hinge pin 102 is rotatably fitted within the two pin holes. The two ends of the hinge pin 102 can have axial limiting structures, such as a shoulder or large end at one end and a cotter pin or nut for axial limiting at the other end. The terms "hinge pin" and "pin shaft" can be used interchangeably.

[0058] 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.

[0059] The emergency release and engagement interruption mechanism of the car tailgate lock may further include 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.

[0060] 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, and can provide electrical signals for control purposes. 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; of course, forward and reverse rotation do not occur at the same time. Linear movement is also called linear motion.

[0061] 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.

[0062] The reset structure that resets 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 the interlocking interrupt plate 6. The torsion spring body of the release plate reset torsion spring 73 is sleeved on a torsion spring column of the base 11. One end of the release plate reset torsion spring 73 is engaged with the base 11, and the other end of the release plate reset torsion spring 73 is engaged with the release plate 71, such as with the torsion spring engaging block 711.

[0063] 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.

[0064] In the embodiment of the emergency release and engagement interruption mechanism of the tailgate lock of this utility model, the release plate 71 and the release plate return torsion spring 73 also serve as parts in the electric unlocking mechanism of the tailgate lock. Hinged connection and rotary fit have the same meaning; rotary fit is also called rotary connection.

[0065] like Figures 1-6 As shown, the emergency release and engagement interruption mechanism of this car's tailgate lock operates as follows:

[0066] 1. In the initial position, manually rotate the toggle switch 92 clockwise along the arc-shaped through hole 1121, causing the emergency release plate 91 to overcome the spring force of the emergency release plate reset spring 93 and rotate clockwise around the release plate shaft 72. The initial position referred to here is... Figure 1 , Figure 2 and Figure 3 The slider 35, drive plate 4, locking plate 51, interrupt plate 6, release plate 71, and pawl 25 shown are in their initial positions. At this time, the tailgate lock is in the fully locked position, also known as the locked position, the fully locked state, or the locked state.

[0067] 2. The emergency release plate 91 moves the release plate 71 to overcome the spring force of the release plate reset torsion spring 73 and rotates clockwise around the release plate shaft 72.

[0068] 3. The release plate 71 moves the pawl 25 to overcome the spring force of the pawl return spring 26 and rotates counterclockwise around the pawl shaft 24, causing the pawl 25 to disengage from the locking plate 22. Under the spring force of the locking plate return spring 23, the locking plate 22 rotates counterclockwise around the locking plate shaft 21 to fully open. That is, at this time, the tailgate lock is in the open position, or the unlocked position, or the fully open position, or the open state, or the unlocked state, or the fully open state.

[0069] like Figures 1-6 As shown, the emergency release and engagement interruption mechanism of this car tailgate lock operates as follows:

[0070] When the electric closing mechanism of the tailgate lock drives the latch plate to the fully locked state: the car's BCM control motor 31 drives the worm gear 32 to rotate, the worm gear 32 meshes with the worm wheel 33 to rotate, the worm wheel 33 drives the lead screw 34 to rotate, and the nut screwed on the lead screw 34, i.e., the slider 35, changes from rotational motion to linear motion, i.e., the slider 35 moves linearly to the left, thereby overcoming the spring force of their respective return springs and driving the drive plate 4 and the locking plate 5 to move the latch plate 22 to the fully locked position. At the same time, it drives the interrupt plate 6, the release plate 71, and the pawl 25 to their respective working positions. If at this time there is a mechanical or electrical failure of the electric locking car door lock itself or a power failure of the whole vehicle, making the electric locking car tailgate lock unable to open, manual emergency release and simultaneous interruption of engagement are required:

[0071] 1. By manually turning the lever 92 clockwise along the arc-shaped through hole 1121, the emergency release plate 91 will overcome the spring force of the emergency release plate reset spring 93 and rotate clockwise around the release plate shaft 72.

[0072] 2. The emergency release plate 91 moves the release plate 71 to overcome the spring force of the release plate reset torsion spring 73 and rotates clockwise around the release plate shaft 72.

[0073] 3. The release plate 71 actuates the pawl 25 to overcome the spring force of the pawl return spring 26 and rotate counterclockwise around the pawl shaft 24, causing the pawl 25 to disengage from the locking plate 22. Simultaneously, the release plate 71 pushes the interrupt plate 6 and the interrupt plate pin 61 on the interrupt plate 6 to move to the right along the elongated through hole 421, thus disengaging the locking plate 51 (i.e., the self-priming plate). The return spring of the locking plate 51 causes it to rotate clockwise, disengaging the locking plate from its restraint. Under the spring force of the locking plate return spring 23, the locking plate 22 rotates counterclockwise around the locking plate shaft 21 and fully opens, i.e., as... Figure 5 and Figure 6 As shown, the tailgate lock is in the open position, also known as the unlocked position, the fully open position, the open state, the unlocked state, or the fully open state.

[0074] 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.

[0075] 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 emergency release and latching interruption mechanism of a tailgate lock of an automobile, comprising a clamping plate hinged to a base through a clamping plate shaft, a clamping plate reset spring arranged on the base and the clamping plate, a pawl hinged to the base through a pawl shaft, a pawl reset spring arranged on the base and the pawl, a motor and a worm on a motor shaft, a worm wheel engaged with the worm, a lead screw coaxially fixed with the worm wheel, and a slider screwed on the lead screw and converted from rotary motion to linear motion; characterized in that: A drive plate and a locking plate are coaxially hinged on the base, the locking plate is connected with the card plate; a knob is arranged on the end of the slide block close to the worm gear, the upper end of the drive plate is a lever connected with the knob, a interrupt plate pin is arranged on the end of the interrupt plate close to the worm gear, the interrupt plate pin is slidingly connected with a long hole on the side plate of the drive plate close to the worm gear, and the interrupt plate pin is abutted with an arc groove on the upper end of the locking plate close to the worm gear; the end of the interrupt plate far from the worm gear is hinged with the top end of the release plate hinged on the base through the release plate shaft; an emergency release plate with a manual lever is coaxially hinged on the release plate shaft, the emergency release plate is connected with the release plate; the emergency release plate and the base are provided with an emergency release plate reset spring.

2. The emergency release and latching interruption mechanism for an automotive liftgate lock as defined in claim 1, wherein: An arc hole is arranged on the front seat of the base, and the knob of the lever is inserted and fixed with the hollow lever column of the knob slidingly connected with the arc hole.

3. The emergency release and latching interruption mechanism for an automotive liftgate lock as defined in claim 1 wherein: The end of the emergency release plate far from the manual lever is provided with a passive claw for driving the release plate to rotate counterclockwise.

4. The emergency release and latching interruption mechanism for an automotive liftgate lock as defined in claim 3, wherein: The emergency release plate reset spring is a torsion spring, the torsion spring body is sleeved on the release plate shaft, one end of the torsion spring is clamped on the torsion spring clamping block of the emergency release plate, and the other end of the torsion spring is clamped on the base.

Images