Tailgate lock structure with snow-carrying function, tailgate lock and vehicle

Abstract

The present invention provides a tailgate lock structure with a snow-carrying function, comprising a ratchet, the ratchet connected to a base plate via a first rotating shaft, a pawl connected to the base plate via a second rotating shaft, an opening rocker arm sleeved on the outer surface of the second rotating shaft, a hook portion provided in the middle of the opening rocker arm, a stop block provided at the end of the hook portion, and a first guide rib provided on the ratchet. The first guide rib has a right-angled triangle cross-section. When the opening rocker arm rotates, the stop block can pass over the first guide rib from the end of the first guide rib closer to the center of the ratchet, but cannot pass over the first guide rib from the end of the first guide rib farther from the center of the ratchet. The present invention drives the opening rocker arm to rotate, causing the stop block to pass over the first guide rib. The right-angled side of the first guide rib abuts the stop block, preventing the stop block from passing over the first guide rib in the opposite direction. This maintains a certain distance between the pawl and the ratchet, preventing the pawl and ratchet from re-engaging under the weight of accumulated snow.

Description

Technical Field

[0001] The present invention relates to the technical field of tailgate locks, and in particular to a tailgate lock structure with a snow-carrying function, a tailgate lock, and a vehicle. Background Art

[0002] After the tailgate of an SUV or sedan is electrically unlocked, the sealing reaction force of the sealing strip or buffer block is generally used to overcome the gravity of the door, causing the ratchet of the tailgate lock to return to the unlocked state, thereby keeping the tailgate in the open state. Due to the limited sealing reaction force of the sealing strip or buffer block, when a lot of snow accumulates on the tailgate on snowy days, the weight of the tailgate becomes heavier, and the sealing reaction force of the sealing strip or buffer block cannot overcome the gravity of the tailgate, causing the pawl and ratchet of the tailgate lock to re-engage, which will cause the tailgate to be unable to be unlocked and opened.

[0003] In order to solve the above problems, the existing technology adds a snow-load link, a snow-load link torsion spring, a block and a shift block to the door lock, so that the tailgate can be opened even if snow accumulates on the tailgate; but the door lock requires the shift block on the ratchet to touch the snow-load link so that the pawl returns to its position. The door lock structure is relatively complex. The torsion force of the snow-load link torsion spring causes the front end of the snow-load link to press against the block, so that the pawl remains in the unlocked position, and the unlocked state of the pawl is not stable enough. Summary of the Invention

[0004] The purpose of the present invention is to improve and innovate the shortcomings and problems existing in the background technology, and to provide a tailgate lock structure, a tailgate lock and a vehicle with a snow-carrying function.

[0005] According to a first aspect of the present invention, a tailgate lock structure with a snow load function is provided, comprising a pawl and a ratchet that are interlocked with each other, the ratchet being connected to the base plate via a first rotating shaft, the pawl being connected to the base plate via a second rotating shaft, a return torsion spring being sleeved on the first rotating shaft, a return spring being provided on the pawl, the return force provided by the return torsion spring being used to drive the ratchet to rotate counterclockwise, the return force provided by the return spring being used to drive the pawl to rotate clockwise, an opening rocker arm being sleeved on the outer surface of the second rotating shaft, a hook portion being provided in the middle of the opening rocker arm, A blocking block is provided at the end of the hook, and the blocking block is made of soft material. A first guide rib is provided on the ratchet, and the cross-section of the first guide rib is a right triangle. The inclined surface of the first guide rib is provided at one end close to the center of the ratchet. When the opening rocker arm rotates, the blocking block can pass over the first guide rib from the end of the first guide rib close to the center of the ratchet, but cannot pass over the first guide rib from the end of the first guide rib away from the center of the ratchet. The opening rocker arm is driven to rotate by a driving mechanism, and the side of the opening rocker arm away from the ratchet is against the pawl.

[0006] A further solution is that a worm is provided on one side of the opening rocker arm, the worm is driven to rotate by a driving mechanism, and a notch is provided on the opening rocker arm to match the blades of the worm.

[0007] A further solution is that the blocking block is made of EPDM rubber.

[0008] A further solution is that the pawl is provided with a second buckling portion, and the ratchet is provided with a first buckling portion that can cooperate with the second buckling portion.

[0009] A further solution is that a second guide rib is provided on the ratchet, and the second guide rib is provided between the first guide rib and the center of the ratchet. When the blocking block passes over the first guide rib, the second guide rib abuts against the blocking block.

[0010] A further solution is that the driving mechanism includes a motor, an output end of the motor is fixedly connected to a first gear, the first gear is meshedly connected to a second gear, and the second gear is installed at the end of the worm.

[0011] A further solution is that a protrusion is provided on the surface of the pawl, and the protrusion abuts against the middle part of the side of the opening rocker arm away from the hook part.

[0012] A further solution is that the first guide rib is in an arc shape.

[0013] According to a second aspect of the present invention, a tailgate lock is provided, comprising a tailgate lock structure with a snow-carrying function as described in any one of the above items.

[0014] According to a third aspect of the present invention, a vehicle is provided, comprising a tailgate lock as described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) when unlocking, the driving mechanism drives the opening rocker arm to rotate, and the opening rocker arm drives the pawl to rotate to the unlocking position, and at the same time, the opening rocker arm drives the blocking block to pass over the first guide rib. After the blocking block passes over the first guide rib, the right-angled side of the first guide rib abuts the blocking block, so that the blocking block cannot pass over the first guide rib in the opposite direction, thereby maintaining a certain distance between the pawl and the ratchet, so that the pawl and the ratchet of the tailgate lock will not re-engage under the action of the gravity of the accumulated snow; the first guide rib abuts the blocking block, so that the pawl can be stably maintained in the unlocking position;

[0016] (2) When the ratchet is rotated to the fully open position, the first guide rib on the ratchet no longer presses against the blocking block, so that the blocking block can automatically return to the side of the first guide rib close to the center of the ratchet when the ratchet is in the fully open position, thereby allowing the pawl to automatically return to the preset position when the ratchet is in the fully open position. There is no need to set up other additional structures to release the first guide rib from pressing against the blocking block, and the structural design is ingenious;

[0017] (3) The present invention drives the opening rocker arm to rotate by cooperating the blade of the worm gear with the notch on the opening rocker arm. When the opening rocker arm drives the pawl to rotate to the unlocking position, the blade of the worm gear separates from the notch and will not hinder the movement of the opening rocker arm. When the ratchet wheel rotates to the fully open position, the second guide rib on the ratchet wheel abuts against the blocking block, which plays a role in limiting the opening rocker arm and preventing the opening rocker arm from rotating at an excessive angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of a tailgate lock structure with snow load function provided by an embodiment of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of a tailgate lock structure with snow load function provided by an embodiment of the present invention Figure 2 (excluding opening rocker arm);

[0021] Figure 3 A schematic diagram of the cooperation structure of the opening rocker arm and the worm gear provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the back side of the pawl provided by an embodiment of the present invention.

[0023] Figure numerals: base plate 1, ratchet 2, pawl 3, opening rocker arm 4, worm 5, motor 6, first gear 7, second gear 8, first guide rib 201, second guide rib 202, return torsion spring 203, first snap-fit portion 204, return spring 301, second snap-fit portion 302, protrusion 303, notch 401, hook portion 402, blocking block 4021. DETAILED DESCRIPTION

[0024] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Example 1

[0028] See also Figures 1-4 The present invention provides a tailgate lock structure with a snow-loading function, comprising a pawl 3 and a ratchet 2 that engage with each other. The pawl 3 is provided with a second engaging portion 302, and the ratchet 2 is provided with a first engaging portion 204 that engages with the second engaging portion 302. The ratchet 2 is connected to a base plate 1 via a first rotating shaft, and the pawl 3 is connected to the base plate 1 via a second rotating shaft. The pawl 3 is loosely engaged with the outer surface of the second rotating shaft. The pawl 3, ratchet 2, and base plate 1 are all disposed on the tailgate of a vehicle. When the second engaging portion 302 of the pawl 3 and the first engaging portion 304 of the ratchet 2 engage together, the tailgate lock is locked, and the lock catch on the vehicle body cannot be disengaged from the ratchet 2, resulting in the tailgate being unable to be opened. A return torsion spring 203 is sleeved on the first rotating shaft, and a return spring 301 is provided on the pawl 3. The return force provided by the return torsion spring 203 is used to drive the ratchet 2 to rotate counterclockwise, and the return force provided by the return spring 301 is used to drive the pawl 3 to rotate clockwise.

[0029] The outer surface of the second rotating shaft is sleeved with an opening rocker arm 4, which also has a clearance fit with the second rotating shaft. A hook portion 402 is provided at the middle end of the opening rocker arm 4, near the ratchet 2. A stopper 4021 is provided at the end of the hook portion 402. The stopper 4021 is made of a soft material. In this embodiment, the stopper 4021 is made of EPDM rubber. A first guide rib 201 and a second guide rib 202 are provided on the surface of the ratchet 2, separated by a predetermined distance. The first guide rib 201 is arc-shaped, and its cross-section is a right triangle, with the hypotenuse of the right triangle located at the end closest to the center of the ratchet 2. When the opening rocker arm 4 rotates under the action of the driving mechanism, the blocking block 4021 can pass over the first guide rib 201 from the end closest to the center of the ratchet 2, but cannot pass over the first guide rib 201 from the end away from the center of the ratchet 2. The second guide rib 202 is located between the first guide rib 201 and the center of the ratchet 2. After the ratchet 2 and the pawl 3 are disengaged, the ratchet 2 rotates counterclockwise, so that the first guide rib 201 no longer abuts the blocking block 4021, allowing the blocking block 4021 to pass over the first guide rib 201 from the end thereof, so that the blocking block 4021 can automatically return to the side of the first guide rib 201 near the center of the ratchet 2 when the ratchet 2 is in the fully open position. This allows the pawl 3 to automatically return to the preset position when the ratchet 2 is in the fully open position, without the need for additional structures to release the first guide rib 201 from abutting the blocking block 4021. After the blocking block 4021 passes over the first guide rib 201, the second guide rib 202 abuts against the blocking block 4021, preventing the opening rocker arm 4 from continuing to rotate clockwise, which would otherwise cause the position of the opening rocker arm 4 to become uncontrollable.

[0030] The opening rocker arm 4 is driven to rotate by a driving mechanism. A worm 5 is provided on one side of the pawl 3. The worm 5 is driven to rotate by the driving mechanism. The opening rocker arm 4 is provided with a notch 401 adapted to the blade of the worm 5. The driving mechanism includes a motor 6. The output end of the motor 6 is fixedly connected to a first gear 7. The first gear 7 is meshed with a second gear 8. The second gear 8 is mounted on the end of the worm 5.

[0031] A raised portion 303 is provided on the surface of the pawl 3, and the raised portion 303 abuts against the middle part of the side of the opening rocker arm 4 away from the hook portion 402, so that the side of the opening rocker arm 4 away from the ratchet 2 abuts against the pawl 3, so that when the pawl 3 rotates clockwise, it can drive the opening rocker arm 4 to rotate, and when the opening rocker arm 4 rotates counterclockwise, it can drive the pawl 3 to rotate counterclockwise.

[0032] The working principle of the present invention is as follows: in specific use, when the second buckling portion 302 of the pawl 3 is buckled with the first buckling portion 204 of the ratchet 2, the tailgate lock is locked. At this time, the lock buckle on the vehicle body cannot be separated from the ratchet 2, and the tailgate cannot be opened; when unlocking, the motor 6 drives the worm 5 to rotate, and the blade on the worm 5 drives the opening rocker arm 4 to rotate, and the opening rocker arm 4 drives the pawl 3 to rotate to the unlocking position, and at the same time, the opening rocker arm 4 drives the blocking block 4021 to cross the first guide rib 201. After the blocking block 4021 crosses the first guide rib 201, the right-angled side of the first guide rib 201 presses against the blocking block 4021, so that the blocking block 4021 cannot cross the first guide rib 201 in the opposite direction, thereby maintaining a certain distance between the pawl 3 and the ratchet 2, so that the pawl 3 and the ratchet 2 of the tailgate lock are locked. 2 will not be re-fastened under the action of the gravity of the accumulated snow; thereafter, under the action of the sealing reaction force of the sealing strip and the return torsion spring 203, the ratchet 2 rotates counterclockwise until the ratchet 2 rotates to the fully open position, at which time the lock on the vehicle body disengages from the ratchet 2, and the blocking block 4021 passes over the first guide rib 201 from the end of the first guide rib 201 and is resisted by the end of the second guide rib 202. The second guide rib 202 limits the opening rocker arm 4 to prevent the opening rocker arm 4 from rotating too much; when closing the tailgate, the lock on the vehicle body drives the ratchet 2 to rotate clockwise, and the blocking block 4021 enters between the first guide rib 201 and the second guide rib 202, and the pawl 3 returns to its initial position. The lock on the vehicle body driving the ratchet 2 to rotate is a prior art and is not specifically described here.

[0033] Example 2

[0034] The present invention provides a tailgate lock, comprising a tailgate lock structure with a snow-carrying function as described in Example 1.

[0035] Example 3

[0036] The present invention provides a vehicle, characterized by comprising a tailgate lock as described in Example 2.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0038] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0039] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification does not necessarily mean that they are all the same embodiments, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A tailgate lock structure with a snow-loading function, comprising a ratchet (2) and a pawl (3) that engage with each other, characterized in that: The ratchet (2) is connected to the base plate (1) via a first rotating shaft, and the pawl (3) is connected to the base plate (1) via a second rotating shaft. A return torsion spring (203) is provided on the first rotating shaft, and a return spring (301) is provided on the pawl (3). The return force provided by the return torsion spring (203) is used to drive the ratchet (2) to rotate counterclockwise, and the return force provided by the return spring (301) is used to drive the pawl (3) to rotate clockwise. An opening rocker arm (4) is provided on the outer surface of the second rotating shaft. A hook portion (402) is provided in the middle of the opening rocker arm (4). A blocking block (4021) is provided at the end of the hook portion (402). The blocking block (4021) is made of a soft material. A first guide rib (201) is provided on the ratchet (2). The first guide rib (2 01) has a right triangle cross-section, the inclined surface of the first guide rib (201) is arranged at one end close to the center of the ratchet (2), and when the opening rocker arm (4) rotates, the blocking block (4021) can pass over the first guide rib (201) from the end of the first guide rib (201) close to the center of the ratchet (2), but cannot pass over the first guide rib (201) from the end of the first guide rib (201) away from the center of the ratchet (2), the opening rocker arm (4) is driven to rotate by the driving mechanism, and the side of the opening rocker arm (4) away from the ratchet (2) abuts against the pawl (3), wherein, after the ratchet (2) and the pawl (3) are disengaged, the ratchet (2) rotates counterclockwise, so that the blocking block (4021) can automatically return to the first guide rib (201) when the ratchet (2) is in the fully opened position. 201) is close to the side of the center of the ratchet (2), so that the pawl (3) can automatically return to the preset position when the ratchet (2) is in the fully open position.

2. The tailgate lock structure with snow load function according to claim 1, characterized in that: A worm (5) is provided on one side of the opening rocker arm (4), and the worm (5) is driven to rotate by a driving mechanism. A notch (401) is provided on the opening rocker arm (4) and is adapted to the blade of the worm (5).

3. The tailgate lock structure with snow-loading function according to claim 1, characterized in that: The blocking block (4021) is made of EPDM rubber.

4. The tailgate lock structure with snow-loading function according to claim 1, characterized in that: The pawl (3) is provided with a second buckling portion (302), and the ratchet (2) is provided with a first buckling portion (204) capable of cooperating with the second buckling portion (302).

5. The tailgate lock structure with snow-loading function according to claim 1, characterized in that: The ratchet (2) is further provided with a second guide rib (202), which is arranged between the first guide rib (201) and the center of the ratchet (2). When the blocking block (4021) passes over the first guide rib (201), the second guide rib (202) abuts against the blocking block (4021).

6. The tailgate lock structure with snow-loading function according to claim 2, characterized in that: The driving mechanism comprises a motor (6), an output end of the motor (6) is fixedly connected to a first gear (7), the first gear (7) is meshedly connected to a second gear (8), and the second gear (8) is mounted on the end of the worm (5).

7. The tailgate lock structure with snow-loading function according to claim 1, characterized in that: A raised portion (303) is provided on the surface of the pawl (3), and the raised portion (303) abuts against the middle portion of the opening rocker arm (4) on a side away from the hook portion (402).

8. The tailgate lock structure with snow-loading function according to claim 1, characterized in that: The first guide rib (201) is in an arc shape.

9. A tailgate lock, characterized by: It comprises a tailgate lock structure with a snow-carrying function as described in any one of claims 1-8.

10. A vehicle, characterized in that: The invention comprises a tailgate lock as claimed in claim 9.

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