Self-absorption and breaking mechanism of front cover lock

Abstract

The invention relates to the technical field of automobile parts, in particular to a self-suction and breaking mechanism of a front cover lock, which comprises a ratchet wheel, a pawl, a self-suction module and a breaking module, the ratchet wheel and the pawl are matched to switch the full-open, half-lock and full-lock states of the front cover lock, the self-suction module comprises a rotating rod with autorotation force and a push rod, and the breaking module is connected with the rotating rod. The front cover lock is switched from a semi-locking state to a full-locking state through the self-suction module; the breaking module comprises an unlocking piece with self-rotation force, the breaking module acts to enable the front cover lock to be switched into a state in the unlocking direction, and when the unlocking piece rotates, the second acting end acts on a push rod of the self-suction module, so that the push rod is separated from a fourth clamping block, and the front cover lock is unlocked. Therefore, the locking action of the self-suction module is interrupted. The technical problem that in the prior art, an unlocking module of a front cover lock cannot break a self-suction module is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a self-priming and breaking mechanism of a front cover lock. Background Art

[0002] A car hood lock generally refers to a device used to lock the car hood (also called the hood or the front cover). This lock is designed to ensure that the hood can be securely closed while the vehicle is driving to prevent accidental opening and potential safety hazards. At the same time, there is no engine in the front compartment of an electric car, which has plenty of space, and the application of the front luggage compartment is gradually becoming popular. Therefore, it is necessary to propose a lock body mechanism that can achieve automatic suction and can manually interrupt the automatic suction and unlock. Summary of the invention

[0003] In order to solve the technical problem in the prior art that the unlocking module of the front cover lock cannot interrupt the self-priming module, the present application proposes a self-priming and interrupting mechanism of the front cover lock to solve the above technical problem.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] The present invention provides a self-priming and breaking mechanism of a front cover lock, comprising: a ratchet and a pawl, wherein the ratchet and the pawl cooperate to switch the fully open, half-locked and fully locked states of the front cover lock, wherein the ratchet is provided with a first card block, a second card block, a third card block and a fourth card block in sequence along the self-rotation direction of unlocking, and the pawl is provided with a first claw hook and a second claw hook along the rotation direction, and when the first card block is locked by the first claw hook, the front cover lock is in a fully locked state, and after the first card block is disengaged from the first claw hook, as the ratchet rotates, the third card block is locked by the first claw hook. The second claw hook blocks, the pawl resets, the second block is locked by the first claw hook, and the front cover lock switches from a fully locked state to a semi-locked state. When the ratchet rotates to the unlocked limit position, the front cover lock is in a fully open state; a self-priming module, the self-priming module includes a rotating rod and a push rod with self-rotation force, the first end of the rotating rod is pulled by the first pull rod, the second end of the rotating rod is hinged to the force-bearing end of the push rod, and the pushing end of the push rod cooperates with the fourth block. When the front cover lock is in a semi-locked state, the rotating rod is pulled by the first pull rod to overcome the self-rotation force and rotate The first locking block of the ratchet wheel pushes the first hook of the pawl until the first locking block of the ratchet wheel is locked by the first hook of the pawl, and the front cover lock switches from a semi-locked state to a fully locked state, and the self-priming module is reset; the interrupting module comprises an unlocking member with a self-rotating force, and the unlocking member is sequentially configured with a first action end, a second action end and a pulling end along the rotation direction. The movable end, the pulling end is pulled by the second pull rod, so that the unlocking member overcomes the self-rotation force and rotates. After the unlocking member rotates, the first action end pushes the pawl to overcome its own rotation force in the locking direction and rotates in the opposite direction, so that a block in the current state of the ratchet wheel disengages from the first claw hook of the ratchet wheel, thereby switching the front cover lock to a state in the unlocking direction. While the unlocking member rotates, the second action end acts on the push rod of the self-priming module, so that the push rod disengages from the fourth block, thereby interrupting the locking action of the self-priming module.

[0006] Furthermore, a triangular groove is formed on the fourth clamping block, and correspondingly, a triangular portion that fits into the triangular groove is formed on the pushing end of the push rod.

[0007] Furthermore, a force-bearing pin is formed on the pawl, and the force-bearing pin is pushed by the first acting end.

[0008] Furthermore, a protrusion is formed on the second acting end, and correspondingly, a notch that cooperates with the protrusion is formed on the middle section of the push rod.

[0009] Furthermore, the push rod is a long rod arranged below the bottom of the ratchet and the pawl.

[0010] Furthermore, the self-rotation forces of the ratchet, pawl, rotating rod, push rod and unlocking member are all provided by torsion springs arranged at the rotating shafts of the corresponding components.

[0011] Based on the above technical solution, the technical effects that can be achieved by the present invention are:

[0012] The self-priming and breaking mechanism of the front cover lock of the present application, the ratchet and the pawl cooperate to switch the fully open, half-locked and fully locked states of the front cover lock. The self-priming module can switch the front cover lock from the half-locked state to the fully locked state. Specifically, after the rotating rod of the self-priming module is pulled by the first pull rod, the rotating rod drives the push rod hinged thereto to move, and the push rod pushes the ratchet, so that the first block of the ratchet pushes open the first claw hook of the ratchet until the first block is locked by the first claw hook, and the front cover lock switches from the half-locked state to the fully locked state. On the one hand, the breaking module can make the front cover lock switch a state in the unlocking direction. For example, if the breaking module is acted once, the front cover lock can be switched from the fully locked state to the half-locked state. If the breaking module is acted again, the front cover lock can be switched from the half-locked state to the fully open state. The breaking module acts on the pawl through the first acting end to push Open the pawl, so that the pawl releases the primary limit on the ratchet, thereby realizing the unlocking of the front cover lock. More importantly, at the same time of unlocking, the second acting end of the unlocking member will push the push rod away, interrupting the locking action of the self-priming module. In summary, the self-priming and interrupting mechanism of the front cover lock of the present application can not only switch the front cover lock from a semi-locked state to a fully locked state through the self-priming module, but also realize the unlocking of the front cover lock through the interrupting module, and the interrupting module can also act on the push rod, an important actuator of the self-priming module, to prevent the push rod from pushing the fourth block of the ratchet, thereby interrupting the locking action of the self-priming module. In other words, the interrupting module of the present application can realize unlocking under any circumstances, thereby ensuring the safety of the vehicle and solving the technical problem that the unlocking module of the front cover lock in the prior art cannot interrupt the self-priming module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the front cover lock of the present application being in a semi-locked state and the self-priming module not being activated;

[0014] Figure 2 This is a schematic diagram of the front cover lock of the present application being in a fully locked state and the self-priming module being activated;

[0015] Figure 3 This is a schematic diagram of the front cover lock of the present application being in a semi-locked state and being interrupted by an interruption module;

[0016] Figure 4 This is a schematic diagram of the front cover lock of the present application being in a fully locked state and being interrupted by an interruption module;

[0017] Figure 5 The front cover lock of the present application is in a fully open state.

[0018] Among them: 1-ratchet, 11-first clamping block, 12-second clamping block, 13-third clamping block, 14-fourth clamping block, 141-triangular groove; 2-pawl, 21-first claw hook, 22-second claw hook, 23-force pin; 3-self-priming module, 31-rotating rod, 32-push rod, 321-notch part, 322-triangular part, 33-first pull rod; 4-interrupting module, 41-unlocking piece, 411-first action end, 412-second action end, 4121-protruding part, 413-pulling end, 42-second pull rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0025] like Figure 1-5As shown, the present application provides a self-priming and breaking mechanism of a front cover lock, including a ratchet 1, a pawl 2, a self-priming module 3 and an breaking module 4. The ratchet 1 and the pawl 2 cooperate to switch the fully open, half-locked and fully locked states of the front cover lock. The ratchet 1 is provided with a first card block 11, a second card block 12, a third card block 13 and a fourth card block 14 in sequence along its self-rotation direction of unlocking. The pawl 2 is provided with a first claw hook 21 and a second claw hook 22 along the rotation direction. When the first card block 11 is locked by the first claw hook 21, the front cover lock is in a fully locked state. After the first card block 11 escapes from the first claw hook 21, as the ratchet 1 rotates, the third card block 13 and the fourth card block 14 are released. The block 13 is blocked by the second claw hook 22 of the pawl 2 before it is reset (the function of the third card block 13 is to prevent the front cover lock from directly entering the fully open state from the fully locked state), the pawl 2 is reset, the second card block 12 is locked by the first claw hook 21, and the front cover lock is switched from the fully locked state to the semi-locked state. When the ratchet 1 rotates to the unlocked limit position, the front cover lock is in the fully open state. The self-priming module 3 includes a rotating rod 31 and a push rod 32 with self-rotation force. The first end of the rotating rod 31 is pulled by the first pull rod 33, and the second end of the rotating rod 31 is hinged to the force-bearing end of the push rod 32. The pushing end of the push rod 32 cooperates with the fourth card block 14, and the front cover lock is in a semi-locked state. In the state, by pulling the first pull rod 33, the rotating rod 31 overcomes the self-rotation force and rotates once. The rotating rotating rod 31 drives the push rod 32 to overcome the self-rotation force and push the fourth block 14 of the ratchet 1. The pushed ratchet 1 overcomes its unlocking self-rotation force and rotates in the opposite direction. During the rotation process, the first block 11 of the ratchet 1 pushes the first claw hook 21 of the pawl 2 until the first block 11 of the ratchet 1 is locked by the first claw hook 21 of the pawl 2. The front cover lock switches from the semi-locked state to the fully locked state, the self-priming module 3 is reset, and the interrupting module 4 includes an unlocking member 41 with a self-rotation force. The unlocking member 41 is sequentially provided with a first action end 4 along the rotation direction. 11. The second action end 412 and the pulling end 413, the pulling end 413 is pulled by the second pull rod 42 to make the unlocking member 41 overcome the self-rotation force and rotate. After the unlocking member 41 rotates, the first action end 411 pushes the pawl 2 to overcome its own rotation force in the locking direction and rotate in the opposite direction, so that a block in the current state of the ratchet 1 disengages from the first claw hook 21 of the ratchet 1, thereby switching the front cover lock to a state in the unlocking direction. While the unlocking member 41 rotates, the second action end 412 acts on the push rod 32 of the self-priming module 3, so that the push rod 32 disengages from the fourth block 14, thereby interrupting the locking action of the self-priming module 3.

[0026] The self-priming and breaking mechanism of the front cover lock of the present application has a lock hole on the ratchet 1 that cooperates with the lock buckle on the front cover. When the front cover lock is in the fully open state, the front cover is manually closed to switch the front cover lock from the fully open state to the semi-locked state. The front cover lock in the semi-locked state can be switched from the semi-locked state to the fully locked state through the self-priming module 3, and the unlocking of the front cover lock is achieved through the breaking module 4. Specifically, when the front cover lock is in the fully locked state, the pulling end 413 is pulled by the second pull rod 42, and the unlocking member 41 rotates, so that the first action end 411 acts on the pawl 2, and the pawl 2 overcomes the self-rotation force and rotates in the opposite direction to make the first claw hook 21 release the restriction on the first card block 11, and the ratchet 1 rotates under the action of the self-rotation force to make the first card block 11 that has released the restriction rotate out of the first claw hook 21. The unlocking member 41 is reset, the second card block 12 is locked by the first claw hook 21, and the front cover lock is switched from the fully locked state to the semi-locked state. The unlocking member 41 is pulled again by the second pull rod 42, and the first action end 411 acts on the pawl 2 again, so that the first catch of the pawl 2 releases the restriction on the second card block 12, the unlocking member 41 is reset, and the first claw hook 21 locks the third card block 13, and the front cover lock is switched from the semi-locked state to the fully open state. More importantly, in the process of unlocking the interrupting module 4, the second action end 412 of the unlocking member 41 acts on the push rod 32, releasing the action of the push rod 32 on the fourth card block 14, interrupting the locking action of the self-priming module 3, and ensuring that the front cover lock can be opened without being affected under any circumstances.

[0027] In a specific implementation of the present invention, a triangular groove 141 is formed on the fourth block 14 , and accordingly, a triangular portion 322 is formed on the pushing end of the push rod 32 to fit into the triangular groove 141 , so that the push rod 32 and the fourth block 14 can fit better.

[0028] In a specific implementation of the present invention, a force-bearing pin 23 is formed on the pawl 2 , and the force-bearing pin 23 is pushed by the first acting end 411 to facilitate the pawl 2 to be pushed by the unlocking member 41 .

[0029] In a specific implementation of the present invention, a protrusion 4121 is formed on the second acting end 412 , and correspondingly, a notch 321 cooperating with the protrusion 4121 is formed on the middle section of the push rod 32 .

[0030] Furthermore, the push rod 32 is a long rod disposed below the bottom of the ratchet 1 and the pawl 2 .

[0031] In a specific implementation of the present invention, the self-rotation forces of the ratchet 1 , the pawl 2 , the rotating rod 31 , the push rod 32 and the unlocking member 41 are all provided by torsion springs disposed at the rotating shafts of the corresponding components.

[0032] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A self-priming and breaking mechanism for a front cover lock, characterized in that: include: A ratchet (1) and a pawl (2), wherein the ratchet (1) and the pawl (2) cooperate to switch the front cover lock between fully open, half locked and fully locked states, wherein the ratchet (1) is provided with a first clamping block (11), a second clamping block (12), a third clamping block (13) and a fourth clamping block (14) in sequence along its unlocking self-rotation direction, and the pawl (2) is provided with a first claw hook (21) and a second claw hook (22) along the rotation direction, wherein the first clamping block (11) is engaged by the first claw hook When the front cover lock (21) is locked, the front cover lock is in a fully locked state. After the first clamping block (11) is disengaged from the first claw hook (21), as the ratchet (1) rotates, the third clamping block (13) is blocked by the second claw hook (22), the ratchet (2) is reset, and the second clamping block (12) is locked by the first claw hook (21). The front cover lock switches from a fully locked state to a half-locked state. When the ratchet (1) rotates to the unlocking limit position, the front cover lock is in a fully open state. The self-priming module (3) comprises a rotating rod (31) with self-rotation force and a push rod (32), the first end of the rotating rod (31) is pulled by a first pull rod (33), the second end of the rotating rod (31) is hinged to the force-bearing end of the push rod (32), the pushing end of the push rod (32) cooperates with the fourth clamping block (14), when the front cover lock is in a semi-locked state, the rotating rod (31) is rotated to overcome the self-rotation force by pulling the first pull rod (33), and the rotating rod (31) is rotated after rotation. 31) drives the push rod (32) to overcome the self-rotation force and push the fourth block (14) of the ratchet (1), and the ratchet (1) after being pushed overcomes its unlocking self-rotation force and rotates in the opposite direction. During the rotation, the first block (11) of the ratchet (1) pushes away the first claw hook (21) of the pawl (2), until the first block (11) of the ratchet (1) is locked by the first claw hook (21) of the pawl (2), and the front cover lock switches from a semi-locked state to a fully locked state, and the self-priming module (3) is reset; The interrupting module (4) comprises an unlocking member (41) with a self-rotating force, wherein the unlocking member (41) is sequentially provided with a first action end (411), a second action end (412) and a pulling end (413) along the rotation direction, wherein the pulling end (413) is pulled by the second pull rod (42) to make the unlocking member (41) rotate against the self-rotating force, and after the unlocking member (41) rotates, the first action end (411) pushes the pawl (2) to rotate in the opposite direction against the self-rotating force in the locking direction, so that a block in the current state of the ratchet (1) is disengaged from the first claw hook (21) of the ratchet (1), thereby switching the front cover lock to a state in the unlocking direction, and while the unlocking member (41) rotates, the second action end (412) acts on the push rod (32) of the self-priming module (3), so that the push rod (32) is disengaged from the fourth block (14), thereby interrupting the locking action of the self-priming module (3).

2. The self-priming and breaking mechanism of the front cover lock according to claim 1, characterized in that: A triangular groove (141) is formed on the fourth clamping block (14), and correspondingly, a triangular portion (322) that fits into the triangular groove (141) is formed on the pushing end of the push rod (32).

3. The self-priming and breaking mechanism of the front cover lock according to claim 1, characterized in that: A force-bearing pin (23) is formed on the pawl (2), and the force-bearing pin (23) is pushed by the first acting end (411).

4. The self-priming and breaking mechanism of the front cover lock according to claim 1, characterized in that: A protrusion (4121) is formed on the second action end (412), and correspondingly, a notch (321) that cooperates with the protrusion (4121) is formed on the middle section of the push rod (32).

5. The self-priming and breaking mechanism of the front cover lock according to claim 1, characterized in that: The push rod (32) is a long rod arranged below the bottom of the ratchet wheel (1) and the ratchet pawl (2).

6. The self-priming and breaking mechanism of the front cover lock according to claim 1, characterized in that: The self-rotation forces of the ratchet (1), the pawl (2), the rotating rod (31), the push rod (32) and the unlocking member (41) are all provided by torsion springs arranged at the rotating shafts of the corresponding components.

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