CN115110847B

CN115110847B - Double-pull unlocking automobile front cover lock and automobile

Info

Publication number: CN115110847B
Application number: CN202210872058.XA
Authority: CN
Inventors: 马聪; 颜长深; 范宇
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2023-06-16
Anticipated expiration: 2042-07-19
Also published as: CN115110847A

Abstract

The invention discloses a double-pull unlocking automobile front cover lock and an automobile, wherein the automobile front cover lock comprises a base and a ratchet pawl meshing mechanism, and the ratchet pawl meshing mechanism comprises a pawl body and a ratchet body which are arranged on the base in a movable mode; the ratchet body is provided with a full locking position, a half locking position and an unlocking position; the pawl body has a first engaged position, a second engaged position, and a disengaged position; the pawl body is provided with a limiting structure and a stress structure; the automobile front cover lock further comprises a primary and secondary claw release triggering mechanism arranged on the base, wherein the primary and secondary claw release triggering mechanism comprises a primary claw body and a secondary claw body; the automobile comprises the automobile front cover lock. The invention can realize double-pull unlocking, has smaller movement stroke of the pawl body in the double-pull unlocking process, can reduce the impact sound generated when the pawl body collides with the ratchet body, and is suitable for the high sound quality requirement of the electric trunk.

Description

Double-pull unlocking automobile front cover lock and automobile

Technical Field

The invention relates to an automobile body, in particular to a double-pull unlocking automobile front cover lock and an automobile.

Background

An automobile front cover lock (also called an automobile engine cover lock) is positioned at the front part of an automobile, and can lock and unlock the automobile front cover through locking and unlocking of the automobile front cover lock. In order to meet the requirements of regulations and the requirements of people on comfort operation improvement, the automobile front cover lock generally comprises two stages of locking, wherein a ratchet wheel is provided with two stages of locking positions and an opening position, and through the cooperation of a pawl body of a ratchet wheel pawl engagement mechanism and the ratchet wheel body, an automobile front cover lock pin is unlocked, locked at a half-locking position and locked at a full-locking position, and when the automobile front cover lock is in a full-locking state, a pawl is meshed with the ratchet wheel to lock the ratchet wheel at the full-locking position, so that the automobile front cover lock pin is locked at the full-locking position; after the pawl is separated from the ratchet wheel, the ratchet wheel rotates, and when the pawl is reset, the pawl is meshed with the ratchet wheel again, so that the ratchet wheel is locked at a half-locking position, at the moment, the front cover lock is in a half-locking state, and the automobile front cover lock pin is locked at the half-locking position; when the manual zipper is unlocked for the second time, after the pawl is separated from the ratchet wheel, the ratchet wheel rotates, after the ratchet wheel rotates to the unlocking position, the ratchet wheel stops rotating through the pawl or a limiting piece on the front cover lock base, the pawl is reset, and at the moment, the front cover lock is in an unlocking state, and the lock pin of the front cover of the automobile is unlocked. The stroke that current lockpin got into half lock position from the unblock position to and from half lock position to full lock position is all bigger, therefore when the unblock, the sound is louder, and traditional car front shroud lock can separate with the pawl after the unblock, and the ratchet no longer limits the position of pawl, can strike on drive structure or limit structure after the pawl resets, additionally produces an impact sound. The engine compartment of the electric vehicle is designed as a front trunk, the use frequency of users is greatly higher than that of the fuel vehicle, the requirements on the quality of sound products of the lock are also higher than that of the fuel vehicle, and the existing automobile front cover lock can not meet the high sound quality requirements of the electric front trunk.

CN103953235a discloses a double-pulling opening structure of automobile engine hood lock, which comprises a locking claw and a rotary clamping plate which are arranged in a supporting frame and used for realizing the function of opening and closing the lock, wherein the top of the locking claw is provided with a transition blocking structure in a bent hook shape, the top of the rotary clamping plate is provided with a blocking structure matched with the transition blocking structure, and reset mechanisms used for realizing the reset function are respectively arranged on the locking claw and the rotary clamping plate. The automobile hood lock is reasonable in structural design, can be used for realizing the universality of multiple platforms, and can be conveniently and rapidly opened by two times of internal operation. Needless to say, the technical solution disclosed in the above patent document is an advantageous attempt in the art, and improvement is still required due to the presence of the transition blocking structure, sharp impact sound, poor sound quality.

Disclosure of Invention

Accordingly, the present invention is directed to a front hood lock for a vehicle and a vehicle capable of realizing double-pull unlocking, wherein the movement stroke of a pawl body is small during double-pull unlocking, so that the striking sound generated when the pawl body collides with a ratchet body can be reduced, the front hood lock is suitable for the high sound quality requirement of an electric trunk, the high sound quality requirement of the electric trunk can be satisfied, and the user satisfaction is improved.

The invention relates to a double-pull unlocking automobile front cover lock, which comprises a base and a ratchet pawl engagement mechanism, wherein the ratchet pawl engagement mechanism comprises a pawl body and a ratchet body which are movably arranged on the base; the ratchet body is provided with a full locking position, a half locking position and an unlocking position;

the pawl body has a first engaged position, a second engaged position, and a disengaged position;

when the pawl body is positioned at a first engagement position and the ratchet body is positioned at a full locking position, the pawl body is engaged with the ratchet body, and the automobile front cover lock is in a full locking state;

when the pawl body is positioned at a second engagement position and the ratchet body is positioned at a half-locking position, the pawl body is engaged with the ratchet body, and the automobile front cover lock is in a half-locking state;

when the ratchet wheel body is positioned at the unlocking position, the automobile front cover lock is in an unlocking state;

the pawl body is provided with a limiting structure and a stress structure;

the automobile front cover lock further comprises a primary and secondary claw release triggering mechanism arranged on the base, wherein the primary and secondary claw release triggering mechanism comprises a primary claw body and a secondary claw body which is rotatably arranged on the primary claw body, and the secondary claw body can rotate while moving along with the primary claw body;

When the automobile front cover lock is in a full lock state, the main claw body rotates while moving, so that the sub claw body is in contact with the limiting structure, and the limiting structure enables the sub claw body not to move until the sub claw body is in contact with the stress structure; the female pawl body moves, the female pawl body can be close to and act on the stress structure, the limiting structure moves towards the direction away from the sub pawl body, and the pawl body moves from a first engagement position to a second engagement position, so that the ratchet body can move from a full locking position to a half locking position;

when the automobile front cover lock is in a half-locking state, the main claw body rotates while moving, so that the sub-claw body approaches to and acts on the stress structure, and the pawl body moves from a second engagement position to a separation position, so that the ratchet body can move from the half-locking position to an unlocking position.

Further, be provided with on the pawl body be used for with female claw body and son claw body complex atress portion, the pawl body is in with rotatable mode setting on the base, limit structure is the up end of atress portion, the atress structure is the right-hand member face of atress portion, the up end of atress portion orientation the rotation center of pawl body, the right-hand member face of atress portion orientation son and mother claw release trigger mechanism.

Further, the female claw body is connected with the base in a rotatable mode, and when the female claw body rotates anticlockwise, one end, away from the rotation center of the female claw body, of the female claw body can approach and act on the stress structure, so that the pawl body moves from a first engagement position to a second engagement position.

Further, a force application part is arranged at one end of the female claw body far away from the rotation center of the female claw body;

when the automobile front cover lock is in a full-lock state, the force application part acts on the force application structure to enable the force application part to move leftwards so as to enable the pawl body to move to a second engagement position;

when the automobile front cover lock is in a full-locking state, the sub-claw body acts on the stress structure to enable the stress part to move leftwards, so that the pawl body moves to a separation position.

Further, the sub-claw body is rotatably disposed at one end of the main-claw body away from the rotation center thereof, and the sub-claw body can extend out of the force application portion in a direction approaching to the force receiving portion in a counterclockwise rotation.

Further, the pawl body is rotatably disposed on the base, an upper end face of the force receiving portion faces the rotation center of the pawl body, and a right end face of the force receiving portion faces the primary and secondary pawl release trigger mechanism.

Further, when the pawl body is located at the first engagement position, the sub-pawl body extending out of the force application portion can abut against the upper end face of the force receiving portion; the force application part can be close to and act on the right end surface of the force receiving part so as to enable the pawl body to rotate from a first engagement position to a second engagement position;

when the pawl body is located at the second engagement position, the sub-pawl body extending out of the force application portion can approach and act on the right end face of the force bearing portion, so that the pawl body moves from the second engagement position to the separation position.

Further, the primary and secondary pawl release triggering mechanism further comprises a secondary pawl elastic element, and the secondary pawl elastic element enables the secondary pawl body to have a movement trend of anticlockwise rotation.

Further, the primary and secondary claw release triggering mechanism further comprises a secondary claw return structure, the secondary claw return structure and the stress parts are respectively located at two different sides of the secondary claw body, and when the primary claw body moves towards the direction away from the stress structure, the secondary claw return structure can overcome the elasticity of the secondary claw elastic element to enable the secondary claw body to rotate clockwise, so that the secondary claw body protrudes upwards from the primary claw body.

Further, the upper portion of female claw body is provided with spacing turn-ups, spacing turn-ups can restrict son claw body anticlockwise pivoted stroke to guarantee son claw body orientation be close to the direction of atress portion stretch out in the application of force portion.

Further, the primary and secondary pawl release triggering mechanism further includes a primary pawl resilient member that imparts a tendency for clockwise rotation to the primary pawl body.

Further, the primary and secondary claw release triggering mechanism further comprises a first primary claw limiting structure and a second primary claw limiting structure which are respectively arranged on the left side and the right side of the primary claw body.

Further, when the female claw body abuts against the second female claw limiting structure, a gap is reserved between the pawl body and the primary and secondary claw release triggering mechanism.

Further, the primary and secondary claw release triggering mechanism further comprises a primary claw rotating shaft and a secondary claw rotating shaft, the primary claw body is rotationally connected with the base through the primary claw rotating shaft, and the secondary claw body is rotationally connected with the primary claw body through the secondary claw rotating shaft.

Further, a first pawl tooth and a second pawl tooth are arranged on the pawl body, and ratchet teeth are arranged on the ratchet body; the ratchet body is rotatably connected with the base;

When the pawl body is in a first engagement position, the first pawl teeth extend into the rotational track of the ratchet teeth;

when the pawl body is positioned at a second engagement position, the first pawl tooth is positioned outside the rotation track of the ratchet tooth, and the second pawl tooth extends into the rotation track of the ratchet tooth;

when the pawl body is in the disengaged position, the pawl body is positioned outside of the rotational path of the ratchet teeth.

Further, a ratchet blocking edge is arranged on the base, when the ratchet body is located at the unlocking position, the ratchet body abuts against the ratchet blocking edge, and the automobile front cover lock is in an unlocking state.

Further, the pawl body also has an unlocked check position;

the ratchet teeth extend downwards along the circumferential direction to form a limiting part, and the pawl body is provided with a non-return part;

when the ratchet wheel body is located at the unlocking position and the automobile front cover lock is in the unlocking state, the pawl body moves from the separation position to the unlocking check position, and the check portion abuts against the limiting portion.

Further, the first pawl tooth, the second pawl tooth and the non-return portion are arranged in sequence from bottom to top.

Further, an arc concave surface is arranged on the non-return part, and an arc convex surface which is used for being fitted with the arc concave surface in a conformal mode is arranged on the limiting part.

Further, the first pawl tooth, the second pawl tooth and the non-return portion are all located below the rotation center of the ratchet body, and the force application portion and the sub-pawl body are all located above the rotation center of the female pawl body.

Further, the primary and secondary claw release trigger mechanism further comprises a inhaul cable, wherein the inhaul cable is connected with the primary claw body, and the inhaul cable can drive the primary claw body to rotate anticlockwise.

Further, the ratchet pawl engagement mechanism further comprises a pawl elastic element, a ratchet rotating shaft and a pawl rotating shaft, wherein the ratchet body is in rotating connection with the base through the ratchet rotating shaft, the pawl body is in rotating connection with the base through the pawl rotating shaft, the pawl elastic element enables the pawl body to have a motion trend of anticlockwise rotation, and the ratchet elastic element enables the ratchet body to have a motion trend of clockwise rotation.

Further, the pawl elastic element is a torsion spring, one connecting rotating arm of the pawl elastic element is connected with the base, and the other connecting rotating arm of the pawl elastic element abuts against the left end face of the stress part.

Further, a locking block is arranged on the ratchet body and is positioned above the ratchet teeth, and a locking groove for accommodating an automobile front cover lock pin is formed between the locking block and the ratchet teeth;

when the ratchet wheel body is positioned at the full locking position or the half locking position, the opening direction of the locking groove is leftwards, and the locking block can limit the lock pin of the front cover of the automobile positioned in the locking groove to move upwards so as to enable the front cover of the automobile to be locked at the full locking state or the half locking state;

when the ratchet body is located at the unlocking position, the opening direction of the locking groove is upward, and the locking block cannot limit the lock pin of the front cover of the automobile located in the locking groove to move upward, so that the front cover of the automobile is locked in an unlocking state.

An automobile of the present invention includes an automobile front cover lock as described above.

The beneficial effects of the invention are as follows:

1. according to the invention, when the primary pulling and unlocking are carried out, the primary claw body rotates while the secondary claw body rotates, the secondary claw body can not move to be in contact with the stressed structure after the limiting structure is in contact with the secondary claw body, and after the pawl body moves from the first occluding position to the second occluding position, the position of the limiting structure is changed, at the moment, the secondary pulling and unlocking are carried out, the primary claw body rotates while the secondary claw body moves, and the limiting structure moves to be out of the movement track of the secondary claw body, so that the secondary claw body can be in direct contact with the stressed structure, and the secondary claw body approaches to and acts on the stressed structure, so that the pawl body can move from the second occluding position to the separating position; in the double-pull unlocking process, the movement stroke of the pawl body is smaller, so that the impact sound generated when the pawl body collides with the ratchet body can be reduced, the high-sound quality requirement of the electric trunk can be met, and the user satisfaction is improved;

2. According to the invention, the stress part and the sub-claw body are positioned on the right side of the stress part, when the pawl body is positioned at a first engagement position and the main-claw body is positioned at an initial position, the distance between the stress part and the force application part is L1, when the pawl body is positioned at a second engagement position and the main-claw body is positioned at the initial position, the distance between the stress part and the force application part is L2, L2 is larger than L1, the sub-claw body can extend out of the force application part towards the direction close to the stress part in a anticlockwise manner, the difference between L2 and L1 can be compensated, and the sub-claw body can act on the stress part when the pawl body is positioned at the second engagement position;

3. the upper end face of the stress part faces the rotation center of the pawl body, so that the pawl body cannot be rotated by applying force perpendicular to the upper end face of the stress part, the right end face of the stress part can provide a contact surface with the main pawl body or the sub pawl body, and the pawl body can be rotated when the main pawl body or the sub pawl body acts on the right end face of the stress part;

4. the primary and secondary claw release triggering mechanism disclosed by the invention does not contact the pawl body in other time except collision with the pawl body during driving, does not generate extra impact sound, only generates one impact sound with smaller sound during pulling the inhaul cable twice, and is suitable for the high-sound quality requirement of the electric trunk;

5. In the process of clockwise rotation and resetting of the main claw body to an initial position, the sub-claw body is contacted with the sub-claw resetting structure, the main claw body clockwise rotates and simultaneously enables the sub-claw resetting structure to overcome the elastic force of the sub-claw elastic element, the sub-claw body clockwise rotates for a certain angle, the sub-claw body upwards protrudes out of the main claw body, when the inhaul cable is pulled for the next time to enable the main claw body to move, the sub-claw body is far away from the sub-claw resetting structure, and the sub-claw body anticlockwise rotates and then can extend out of the force application part towards the direction close to the force application part;

6. the invention reasonably arranges the pawl body, the ratchet body and the structure of the primary and secondary pawl release triggering mechanism, thereby realizing double-pull unlocking;

7. the pawl body is also provided with an unlocking check position, the stroke of the pawl body from the separation position to the unlocking check position is very small, and the sound generated by the contact of the check part and the limiting part is very small, so that the sound quality of the automobile front cover lock can be further improved;

8. the invention can be used for matching the main pawl body and the sub pawl body to drive the pawl body to rotate clockwise, and can also be used for applying force to the connecting rotating arm of the pawl elastic element to enable the pawl body to have a counterclockwise rotating movement trend, and only one driving boss is arranged to provide matching for two parts, so that the structure of the pawl body is simpler and the weight is lighter.

Drawings

In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

FIG. 3 is a schematic diagram of an explosive structure according to the present invention;

FIG. 4 is a schematic view of the ratchet pawl engagement mechanism of the present invention;

FIG. 5 is a schematic view of the structure of the primary and secondary pawl release trigger mechanism of the present invention;

FIG. 6 is a schematic diagram of a guaranteed configuration of a primary and secondary pawl release trigger mechanism of the present invention;

FIG. 7 is a schematic diagram of the present invention in a fully locked state;

FIG. 8 is a second schematic diagram of the present invention in a fully locked state;

FIG. 9 is a schematic diagram of a first pull cable of the present invention;

FIG. 10 is a second schematic diagram of the first pull cable of the present invention;

FIG. 11 is a schematic view of the ratchet body rotated to a half-lock position according to the present invention;

FIG. 12 is a second schematic view of the ratchet body rotated to a half-lock position according to the present invention;

FIG. 13 is a schematic view of the first embodiment of the present invention after the first cable is released;

FIG. 14 is a second schematic view of the first cable release mechanism of the present invention;

FIG. 15 is a schematic view of a second pull of the cable of the present invention with the pawl body resting against the force receiving portion;

FIG. 16 is a second schematic view of the structure of the second pulling cable of the present invention with the pawl body resting against the force receiving portion;

FIG. 17 is a schematic illustration of the first embodiment of the present invention with the ratchet teeth disengaged from the second pawl teeth after a second pull of the cable;

FIG. 18 is a second schematic illustration of the separation of the ratchet teeth from the second pawl teeth after a second pull of the cable of the present invention;

FIG. 19 is a schematic view of the second cable release structure of the present invention;

FIG. 20 is a second schematic view of the structure of the second cable release device of the present invention;

FIG. 21 is a flow chart of a double pull unlocking method of the present invention;

FIG. 22 is a schematic diagram of the locking process of the present invention;

FIG. 23 is a schematic view of the path of movement of the ratchet teeth of the present invention (with the pawl body in the disengaged position).

The figures are marked as follows:

1-a base, 11-a ratchet blocking edge;

2-ratchet pawl engagement mechanism, 21-pawl body, 211-first pawl tooth, 212-second pawl tooth, 213-check portion, 214-force portion, 22-pawl resilient element, 23-ratchet body, 231-ratchet teeth, 232-limit portion, 233-lock block, 234-lock slot, 25-ratchet resilient element, 26-pawl spindle, 27-ratchet spindle;

the three-dimensional jaw comprises a 3-primary and secondary jaw release trigger mechanism, a 31-primary jaw body, a 311-limit flanging, a 312-mounting bracket, a 313-force application part, a 32-secondary jaw body, a 33-primary jaw elastic element, a 34-primary jaw limit structure, a 35-secondary jaw limit structure, a 36-secondary jaw elastic element, a 37-secondary jaw return structure, a 38-primary jaw rotating shaft and a 39-secondary jaw rotating shaft;

4-inhaul cables;

5-automobile front cover lock pin.

Detailed Description

The technical scheme of the invention is described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, a double-pull unlocking front hood lock for an automobile in the present embodiment includes a base 1 and a ratchet pawl engagement mechanism 2, the ratchet pawl engagement mechanism 2 including a pawl body 21 and a ratchet body 23 movably provided on the base 1; the ratchet body 23 has a full lock position, a half lock position, and an unlock position;

the pawl body 21 has a first engaged position, a second engaged position, and a disengaged position;

as shown in fig. 7 to 8, when the pawl body 21 is located at the first engagement position and the ratchet body 23 is located at the full lock position, the pawl body 21 engages with the ratchet body 23, and the front hood lock of the automobile is in the full lock state;

13-14, when the pawl body 21 is in the second engaged position and the ratchet body 23 is in the semi-lock position, the pawl body 21 engages the ratchet body 23 and the front cowl lock is in the semi-lock state;

as shown in fig. 19 to 20, when the ratchet body 23 is located at the unlock position, the automobile front cover lock is in the unlock state;

the pawl body 21 is provided with a limiting structure and a stress structure;

As shown in fig. 5 to 6, the front hood lock of the automobile further includes a primary and secondary claw release triggering mechanism 3 provided on the base 1, the primary and secondary claw release triggering mechanism 3 including a primary claw body 31 and a secondary claw body 32 rotatably provided on the primary claw body 31, the secondary claw body 32 being capable of rotating while the secondary claw body 32 moves with the primary claw body 31;

as shown in fig. 9 to 12, when the automobile front cover lock is in the full lock state, the main jaw body 31 moves while the sub-jaw body 32 rotates, so that the sub-jaw body 32 contacts with the limiting structure, and the limiting structure enables the sub-jaw body 32 not to move until contacting with the stress structure; at this time, the female pawl body 31 moves, so that the female pawl body 31 can approach and act on the force-receiving structure, the limit structure moves towards the direction of the distal ion pawl body 32, and the pawl body 21 moves from the first engagement position to the second engagement position, so that the ratchet body 23 can move from the full locking position to the half locking position;

15-18, when the front hood lock of the automobile is in the half-lock state, the main pawl body 31 moves while the sub-pawl body 32 rotates, so that the sub-pawl body 32 approaches and acts on the force-receiving structure, and the pawl body 21 moves from the second engagement position to the disengagement position, thereby enabling the ratchet body 23 to move from the half-lock position to the unlocking position.

When the automobile front cover lock is in a full-lock state, when the automobile front cover lock is pulled and unlocked for the first time, the main claw body 31 moves while the sub-claw body 32 rotates, the limiting structure is in contact with the sub-claw body 32, so that the sub-claw body 32 cannot move to be in contact with the stressed structure, and after the pawl body 21 moves from the first engagement position to the second engagement position, the position of the limiting structure is changed, at the moment, the second pulling and unlocking are carried out, the main claw body 31 moves while the sub-claw body 32 rotates, the limiting structure moves out of the movement track of the sub-claw body 32, and therefore the sub-claw body 323 can be in direct contact with the stressed structure, the sub-claw body 32 approaches to and acts on the stressed structure, so that the pawl body 21 can move from the second engagement position to the separation position. In the double-pull unlocking process, the movement stroke of the pawl body 21 is smaller, so that the impact sound generated when the pawl body 21 and the ratchet body 23 impact can be reduced, the high-sound quality requirement of the electric trunk can be met, and the user satisfaction is improved.

In this embodiment, the pawl body 21 is provided with a force receiving portion 214 for being matched with the main pawl body 31 and the sub-pawl body 32, the pawl body 21 is rotatably disposed on the base 1, the limiting structure is an upper end face of the force receiving portion 214, the force receiving structure is a right end face of the force receiving portion 214, the upper end face of the force receiving portion 214 faces the rotation center of the pawl body 21, and the right end face of the force receiving portion 214 faces the sub-pawl release triggering mechanism 3.

In this embodiment, as shown in fig. 9 to 12, the female pawl body 31 is rotatably connected to the base 1, and when the female pawl body 31 rotates counterclockwise, one end of the female pawl body 31 away from the rotation center thereof can approach and act on the force-bearing structure of the pawl body 21, so that the pawl body 21 moves from the first engagement position to the second engagement position.

In this embodiment, as shown in fig. 11 to 16, the female pawl body 31 is provided with a biasing portion 313 at one end thereof away from the rotation center thereof;

when the automobile front cover lock is in the full lock state, the force application part 313 acts on the force application structure to enable the force application part 214 to move leftwards under the action of the force application part 313 so as to enable the pawl body 21 to move to the second engagement position;

when the front hood lock of the automobile is in the half-locking state, the sub-claw body 32 acts on the stress structure to enable the stress part 214 to move leftwards under the action of the sub-claw body 32, so that the pawl body 21 moves to the separation position.

The main jaw body 31 and the sub-jaw body 32 act on the force receiving portion 214, and thrust is provided to enable the force receiving portion 214 to drive the pawl body 21 to move, and positions of the force receiving portion 214 of the pawl body 21 at the first engagement position, the second engagement position and the separation position are different, when the pawl body 21 moves to the first engagement position, the second engagement position and the separation position in sequence, the force receiving portion 214 correspondingly moves leftwards, so that the pawl body 21 and the sub-jaw body 32 are matched with each other conveniently.

In the present embodiment, the sub-pawl body 32 is rotatably disposed at one end of the main pawl body 31 away from the rotation center thereof, and the sub-pawl body 32 can be rotated counterclockwise to protrude from the urging portion 313 in a direction approaching the force receiving portion 214.

The force receiving portion 214 and the sub-pawl body 32 are located on the right side of the force receiving portion 214, when the pawl body 21 is located at the first engagement position and the main pawl body 31 is located at the initial position, the distance between the force receiving portion 214 and the force applying portion 313 is L1, when the pawl body 21 is located at the second engagement position and the main pawl body 31 is located at the initial position, the distance between the force receiving portion 214 and the force applying portion 313 is L2, L2 is larger than L1, the sub-pawl body 32 can extend out of the force applying portion 313 towards the direction approaching to the force receiving portion 214 in a counterclockwise direction, the difference between L2 and L1 can be compensated, and when the pawl body 21 is located at the second engagement position, the sub-pawl body 32 can act on the force receiving portion 214.

In this embodiment, as shown in fig. 9, the pawl body 21 is rotatably provided on the base 1, the upper end surface of the force receiving portion 214 faces the rotation center of the pawl body 21, and the right end surface of the force receiving portion 214 faces the primary-secondary pawl release trigger mechanism 3. The upper end face of the force receiving portion 214 faces the rotation center of the pawl body 21, so that the pawl body 21 cannot be rotated by applying a force perpendicular to the upper end face of the force receiving portion 214, the right end face of the force receiving portion 214 can provide a contact surface with the main pawl body 31 or the sub pawl body 32, and the pawl body 21 can be rotated when the main pawl body 31 or the sub pawl body 32 acts on the right end face of the force receiving portion 214.

In this embodiment, when the pawl body 21 is located at the first engagement position, the sub-pawl body 32 protruding from the force applying portion 313 can abut against the upper end face of the force receiving portion 214; the urging portion 313 can approach and act on the right end face of the force receiving portion 214 to rotate the pawl body 21 from the first engagement position to the second engagement position;

when the pawl body 21 is in the second engagement position, the sub-pawl body 32 protruding from the urging portion 313 can approach and act on the right end face of the force receiving portion 214 to move the pawl body 21 from the second engagement position to the disengaged position.

Specifically, as shown in fig. 9 to 12, when the pawl body 21 is in the first engaged position, the counterclockwise rotation of the main pawl body 31 can rotate the sub-pawl body 32 counterclockwise, so that the sub-pawl body 32 protruding from the urging portion 313 can be abutted against the upper end face of the force receiving portion 214; the counterclockwise rotation of the female pawl body 31 also brings the urging portion 313 close to and against the right end face of the force receiving portion 214 to rotate the pawl body 21 from the first engagement position to the second engagement position; as shown in fig. 15 to 16, when the pawl body 21 is located at the second engagement position, the counterclockwise rotation of the main pawl body 31 can rotate the sub-pawl body 32 counterclockwise, so that the sub-pawl body 32 protruding from the urging portion 313 can be brought close to and act on the right end face of the force receiving portion 214 to move the pawl body 21 from the second engagement position to the separation position.

In this embodiment, as shown in fig. 5 to 6, the primary-secondary pawl releasing and triggering mechanism 3 further includes a secondary pawl elastic member 36, and the secondary pawl elastic member 36 makes the secondary pawl body 32 have a movement tendency to rotate counterclockwise.

In this embodiment, as shown in fig. 5-6, the primary-secondary claw release triggering mechanism 3 further includes a primary claw return structure 37, the primary claw return structure 37 and the force receiving portion 214 are respectively located on different sides of the primary claw body 32, and when the primary claw body 31 moves in a direction away from clockwise rotation, the primary claw return structure 37 can overcome the elastic force of the primary claw elastic element 36 to rotate the primary claw body 32 clockwise, so that the primary claw body 32 protrudes upwards from the primary claw body 31. In the process of clockwise rotation and resetting of the female pawl body 31 to the initial position, the sub-pawl body 32 contacts with the sub-pawl return structure 37, the female pawl body 31 rotates clockwise and simultaneously enables the sub-pawl return structure 37 to overcome the elastic force of the sub-pawl elastic element 36, the sub-pawl body 32 rotates clockwise by a certain angle, the sub-pawl body 32 protrudes upwards from the female pawl body, when the cable is pulled next time to enable the female pawl body to move, the sub-pawl body 32 moves away from the sub-pawl return structure 37, and the sub-pawl body 32 can extend out of the force application part 313 towards the direction approaching the force application part 214 after rotating anticlockwise.

In this embodiment, as shown in fig. 5-6, a limit flange 311 is disposed on the upper portion of the main claw body 31, and the limit flange 311 can limit the counterclockwise rotation travel of the sub-claw body 32, so as to ensure that the sub-claw body 32 extends out of the force application portion 313 toward the direction approaching the force receiving portion 214. After the sub-claw body 32 is separated from the sub-claw return structure 37, the sub-claw body 32 rotates counterclockwise until abutting against the limit flange 311, and at this time, the sub-claw body 32 extends out of the force application portion 313 in a direction approaching the force receiving portion 214.

In this embodiment, as shown in fig. 5 to 6, the primary-secondary pawl releasing and triggering mechanism 3 further includes a primary pawl elastic member 33, and the primary pawl elastic member 33 causes the primary pawl body 31 to have a clockwise rotational movement tendency.

In this embodiment, as shown in fig. 5 to 6, the primary-secondary claw release triggering mechanism 3 further includes a first primary claw limiting structure 34 and a second primary claw limiting structure 35 respectively disposed on the left and right sides of the primary claw body 31.

When the pawl body 21 is positioned at the first engagement position in use, the counter-clockwise rotation of the main pawl body 31 can gradually lead the sub-pawl body 32 to be far away from the ion pawl return structure 37, the sub-pawl body 32 rotates counter-clockwise under the action of the sub-pawl elastic element 36, so that the sub-pawl body 32 extends out of the force application part 313, the sub-pawl body 32 extending out of the force application part 313 abuts against the upper end surface of the force application part 214, and the upper end surface of the force application part 214 overcomes the elasticity of the sub-pawl elastic element 36 to stop the movement of the sub-pawl body 32; simultaneously, the female pawl body 31 rotates anticlockwise, the force application part 313 approaches and acts on the force application part 214, and the force application part 214 is pushed to drive the pawl body 21 to rotate leftwards, so that the pawl body 21 rotates from the first engagement position to the second engagement position; when the pawl body 21 is located at the second engagement position, the female pawl body 31 rotates counterclockwise to enable the sub-pawl body 32 to gradually move away from the ion pawl return structure 37, the sub-pawl body 32 rotates counterclockwise under the action of the sub-pawl elastic element 36, so that the sub-pawl body 32 extends out of the force applying portion 313, and although the position of the force applying portion 214 changes, the sub-pawl body 32 extends out of the force applying portion 313 to compensate for the change of the position, so that the sub-pawl body 32 can approach and act on the force applying portion 214, and under the driving of the female pawl body 31, the sub-pawl body 32 pushes the force applying portion 214 to drive the pawl body 21 to rotate left, so that the pawl body 21 rotates from the second engagement position to the separation position.

In this embodiment, as shown in fig. 2, when the female pawl body 31 abuts against the second female pawl limiting structure 35 under the elastic action of the female pawl elastic element 33, a gap is provided between the pawl body 21 and the primary-secondary pawl releasing and triggering mechanism 3. This gap can ensure that the primary and secondary pawl release trigger mechanism 3 does not contact the pawl body 21 in other times except for the impact with the pawl body 21 during driving, does not generate additional impact sound, generates only one impact sound with smaller sound during pulling the cable 4 twice, and is suitable for the high sound quality requirement of an electric trunk.

In this embodiment, as shown in fig. 4, the primary-secondary claw release triggering mechanism 3 further includes a primary claw rotating shaft 38 and a secondary claw rotating shaft 39, the primary claw body 31 is rotatably connected with the base 1 through the primary claw rotating shaft 38, and the secondary claw body 32 is rotatably connected with the primary claw body 31 through the secondary claw rotating shaft 39.

In this embodiment, as shown in fig. 4 and 23, the pawl body 21 is provided with a first pawl tooth 211 and a second pawl tooth 212, and the ratchet body 23 is provided with a ratchet tooth 231; the ratchet body 23 is rotatably connected with the base 1;

when the pawl body 21 is in the first engaged position, the first pawl teeth 211 extend into the rotational path of the ratchet teeth 231;

When the pawl body 21 is in the second engaged position, the first pawl tooth 211 is located outside the rotational locus of the ratchet tooth 231 and the second pawl tooth 212 extends into the rotational locus of the ratchet tooth 231;

as shown in fig. 23, when the pawl body 21 is in the disengaged position, the pawl body 21 is located outside the rotational locus of the ratchet teeth 231.

When the pawl body 21 is in the first engagement position and the ratchet body 23 is in the full lock position, the first pawl teeth 211 engage the ratchet teeth 231, and the automobile front cover lock is in the full lock state; at this time, the female pawl body 31 rotates counterclockwise, the force application part 313 approaches and acts on the force application part 214 to push the force application part 214 to drive the pawl body 21 to rotate leftwards, the pawl body 21 rotates from the first engagement position to the second engagement position, the first pawl tooth 211 moves out of the rotation track of the ratchet tooth 231, the first pawl tooth 211 is separated from the ratchet tooth 231, and at this time, the second pawl tooth 212 stretches into the rotation track of the ratchet tooth 231, so that the ratchet tooth 231 is engaged with the second pawl tooth 212, the ratchet body 23 is located at the half-locking position, and the automobile front cover lock is in the half-locking state;

when the pawl body 21 is located at the second engagement position and the ratchet body 23 is located at the half-locking position, the second pawl teeth 212 are engaged with the ratchet teeth 231, the female pawl body 31 rotates anticlockwise to enable the sub-pawl body 32 to gradually move away from the ion pawl return structure 37, the sub-pawl body 32 rotates anticlockwise under the action of the sub-pawl elastic element 36, so that the sub-pawl body 32 extends out of the force application portion 313, the sub-pawl body 32 pushes the force application portion 214 to drive the pawl body 21 to rotate leftwards under the driving of the female pawl body 31, the pawl body 21 rotates from the second engagement position to the separation position, the pawl body 21 is located outside the rotation track of the ratchet teeth 231, the second pawl teeth 212 are separated from the ratchet teeth 231, the ratchet body 23 can rotate to the unlocking position, and the automobile front cover lock is in the unlocking state.

In this embodiment, as shown in fig. 1-2, the base 1 is provided with a ratchet blocking edge 11, when the ratchet body 23 is located at the unlocking position, the ratchet body 23 abuts against the ratchet blocking edge 11, and the front cover lock of the automobile is in the unlocking state. After the second pawl tooth 212 is separated from the ratchet tooth 231, the ratchet elastic element 25 rotates the ratchet body 23 until the ratchet body 23 abuts against the ratchet blocking edge 11, and the ratchet blocking edge 11 stops the ratchet body 23 at the unlocking position, so that the automobile front cover lock is in the unlocking state.

In this embodiment, as shown in fig. 19-20, the pawl body 21 also has an unlocked check position;

the ratchet teeth 231 extend downwards along the circumferential direction to form a limiting part 232, and the pawl body 21 is provided with a non-return part 213;

when the ratchet body 23 is in the unlock position and the front hood lock is in the unlock state, the pawl body 21 moves from the disengaged position to the unlock check position, and the check portion 213 abuts on the stopper 232.

When the ratchet body 23 rotates to the unlocking position, after the primary and secondary claw release trigger mechanism 3 returns to the initial position, the pawl body 21 can rotate anticlockwise under the action of the pawl elastic element 22 until the check part 213 abuts against the limiting part 232, the rotation of the pawl body 21 is stopped, the stroke of the pawl body 21 from the separating position to the unlocking check position is very small, the sound generated by the contact of the check part 213 and the limiting part 232 is very small, and the sound quality of the automobile front cover lock can be further improved.

In this embodiment, as shown in fig. 4, the first pawl tooth 211, the second pawl tooth 212, and the check portion 213 are provided in this order from bottom to top.

In this embodiment, as shown in fig. 4 and 23, the non-return portion 213 is provided with an arc concave surface, and the limit portion 232 is provided with an arc convex surface for fitting the arc concave surface. The rotation track of ratchet tooth 231 is circular, and when pawl body 21 was in the separation position, arc concave surface and arc convex surface all with ratchet tooth 231's rotation track phase-match, the arc concave surface can be for ratchet tooth 231 to step down, prevents to interfere, and the arc convex surface can guarantee that the interval is less between arc concave surface and the arc convex surface, guarantees that pawl body 21 rotates less to the stroke of unblock non return position from the separation position.

In this embodiment, as shown in fig. 4, the first pawl tooth 211, the second pawl tooth 212, and the non-return portion 213 are located below the rotation center of the ratchet body 23, and the urging portion 313 and the sub-pawl body 32 are located above the rotation center of the main pawl body 31.

In this embodiment, as shown in fig. 1 to 3, the primary-secondary claw release triggering mechanism 3 further includes a cable 4, where the cable 4 is connected to the primary claw body 31, and the cable 4 can drive the primary claw body 31 to rotate counterclockwise. The female pawl body 31 is provided with a mounting bracket 312 for connecting with the cable 4, and pulling the cable 4 can rotate the female pawl body 31 counterclockwise.

In this embodiment, as shown in fig. 4, the ratchet pawl engagement mechanism 2 further includes a pawl elastic element 22, a ratchet elastic element 25, a ratchet rotating shaft 27 and a pawl rotating shaft 26, wherein the ratchet body is rotatably connected with the base 1 through the ratchet rotating shaft, the pawl body is rotatably connected with the base 1 through the pawl rotating shaft, the pawl elastic element 22 causes the pawl body 21 to have a movement tendency to rotate counterclockwise, and the ratchet elastic element 25 causes the ratchet body 23 to have a movement tendency to rotate clockwise.

In this embodiment, as shown in fig. 4, the pawl elastic element 22 is a torsion spring, one connecting arm of the pawl elastic element 22 is connected with the base 1, and the other connecting arm of the pawl elastic element 22 abuts against the left end face of the force receiving portion 214. The force receiving portion 214 not only can be used for being matched with the main pawl body 31 and the sub pawl body 32 to drive the pawl body 21 to rotate clockwise, but also can be used for applying force to the connecting rotating arm of the pawl elastic element 22 to enable the pawl body 21 to have a counterclockwise rotation movement trend, and only one driving boss is arranged to be matched with two parts, so that the structure of the pawl body 21 is simpler and the weight is lighter.

In this embodiment, as shown in fig. 4, a locking block 233 is provided on the ratchet body 23, the locking block 233 is located above the ratchet teeth 231, and a locking groove 234 for accommodating the front hood lock pin 5 of the automobile is formed between the locking block 233 and the ratchet teeth 231;

When the ratchet body 23 is located at the full locking position or the half locking position, the opening direction of the locking groove 234 is leftward, and the locking block 233 can limit the front cover lock pin 5 located in the locking groove 234 to move upward, so that the front cover lock of the automobile is in the full locking state or the half locking state;

when the ratchet body 23 is located at the unlock position, the locking block 233 cannot restrict the front hood lock pin 5 located in the locking groove 234 from moving upward in the opening direction of the locking groove 234, so that the front hood lock is in the unlock state.

An automobile in this embodiment includes the automobile front cover lock as described above.

The following describes the operation of the present invention in detail with reference to the drawings and examples.

The unlocking process is as follows:

as shown in fig. 7, 8 and 21, the front hood lock is in the fully locked state, the pawl body 21 is in the first engagement position and the ratchet body 23 is in the fully locked position, the ratchet teeth 231 are engaged with the first pawl teeth 211, the opening direction of the locking groove 234 is leftward, the front hood lock pin 5 is locked in the locking groove 234, the main pawl body 31 is abutted against the second main pawl limiting structure 35, a gap is formed between the right end surface of the force receiving portion 214 and the force applying portion 313, the sub pawl elastic element 36 enables the sub pawl body 32 to be abutted against the sub pawl return structure 37, and the upper portion of the sub pawl body 32 extends upward from the main pawl body 31;

As shown in fig. 9, 10 and 21, when the cable 4 is pulled for the first time, the female pawl body 31 rotates to enable the female pawl body 31 to leave the second female pawl limiting structure 35, the sub-pawl elastic element 36 enables the sub-pawl body 32 to rotate along with the female pawl body 31 anticlockwise, the sub-pawl body 32 leaves the sub-pawl return structure 37, the sub-pawl body 32 rotates anticlockwise and abuts against the upper end surface of the force receiving portion 214, the female pawl body 31 drives the sub-pawl body 32 to rotate, and the force applied by the sub-pawl body 32 to the upper end surface of the force receiving portion 214 is downward, so that the sub-pawl body 32 cannot push the force receiving portion 214 to rotate, and simultaneously with the rotation of the female pawl body 31, the force applying portion 313 abuts against the right end surface of the force receiving portion 214, and the force applying portion 313 pushes the pawl body 21 to rotate clockwise;

as shown in fig. 11, 12 and 21, during the pulling process of the cable 4, the female pawl body 31 continues to rotate, the force application part 313 continues to push the pawl body 21 to rotate clockwise, the pawl body 21 rotates to the second engagement position, the ratchet teeth 231 are separated from the first pawl teeth 211, the ratchet body 23 rotates clockwise under the action of the ratchet elastic element 25, the ratchet teeth 231 are engaged with the second pawl teeth 212, the ratchet body 23 stops at the half-locking position, the front cover lock of the automobile is changed from the full-locking state to the half-locking state, and the female pawl body 31 is restricted from continuing to rotate when rotating to the first female pawl limiting structure 34, so that the cable 4 is released;

As shown in fig. 13, 14 and 21, after the cable 4 is released, the female pawl elastic element 33 rotates the female pawl body 31 clockwise, the female pawl body 31 abuts against the second female pawl limiting structure 35, the sub-pawl elastic element 36 abuts against the sub-pawl body 32 against the sub-pawl return structure 37, and the upper portion of the sub-pawl body 32 protrudes upward from the female pawl body 31;

as shown in fig. 15, 16 and 21, at this time, the ratchet teeth 231 are engaged with the second pawl teeth 212, the position of the pawl body 21 is changed relative to the initial position, the force receiving portion 214 moves to the left, when the female pawl body 31 abuts against the second female pawl limiting structure 35, the gap between the right end surface of the force receiving portion 214 and the force applying portion 313 increases, after the pulling rope 4 is pulled for the second time, the female pawl body 31 rotates to make the female pawl body 31 separate from the second female pawl limiting structure 35, the clockwise rotation of the female pawl body 31 does not make the force applying portion 313 push the right end surface of the force receiving portion 214, the male pawl body 32 can rotate counterclockwise along with the female pawl body 31, and at the same time, the male pawl body 32 separates from the male pawl return structure 37, the male pawl elastic element 36 makes the male pawl body 32 itself rotate counterclockwise to a position abutting against the limit flange 311, the upper portion of the male pawl body 32 protrudes to the force applying portion 313 to the left, and the length of the male pawl body 32 protrudes by the position change amount of the force receiving portion 214, so that the male pawl body 32 can abut against the right end surface of the force receiving portion 214;

As shown in fig. 17, 18 and 21, when the pulling rope 4 is continuously pulled and the main pawl body 31 rotates clockwise, the sub pawl body 32 can push the pawl body 21 to rotate clockwise to the separating position, the ratchet teeth 231 are separated from the second pawl teeth 212, and the ratchet body 23 rotates clockwise under the action of the ratchet elastic member 25;

as shown in fig. 19, 20 and 21, the ratchet elastic member 25 rotates the ratchet body 23 until the ratchet body 23 abuts against the ratchet blocking edge 11, the ratchet blocking edge 11 stops the ratchet body 23 at the unlocking position, and the automobile front cover lock is in the unlocking state; and simultaneously, after the stay rope 4 is released to enable the primary and secondary claw release trigger mechanism 3 to return to the initial position, the pawl body 21 can rotate anticlockwise under the action of the pawl elastic element 22 until the check part 213 abuts against the limiting part 232, the pawl body 21 stops rotating, and at the moment, the pawl body 21 stops at the unlocking check position.

The locking process is as follows:

as shown in fig. 22, the ratchet body 23 abuts against the ratchet blocking edge 11, the opening direction of the holding locking groove 234 is upward, the check portion 213 abuts against the stopper portion 232, and the automobile front cover lock pin 5 moves downward into the locking groove 234 of the ratchet body 23; the automobile front cover lock pin 5 continuously moves downwards to drive the ratchet wheel body 23 to rotate, the ratchet wheel body 23 rotates from an unlocking position to a half locking position and then rotates to a full locking position, and the automobile front cover lock is changed into a full locking state.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims

1. The double-pull unlocking automobile front cover lock comprises a base (1) and a ratchet pawl meshing mechanism (2), wherein the ratchet pawl meshing mechanism (2) comprises a pawl body (21) and a ratchet body (23) which are movably arranged on the base (1); the ratchet body (23) has a full lock position, a half lock position and an unlock position;

the method is characterized in that:

the pawl body (21) has a first engaged position, a second engaged position, and a disengaged position;

when the pawl body (21) is positioned at a first engagement position and the ratchet wheel body (23) is positioned at a full locking position, the pawl body (21) is engaged with the ratchet wheel body (23), and the automobile front cover lock is in a full locking state;

when the pawl body (21) is positioned at a second engagement position and the ratchet wheel body (23) is positioned at a half-locking position, the pawl body (21) is engaged with the ratchet wheel body (23), and the automobile front cover lock is in a half-locking state;

When the ratchet wheel body (23) is positioned at the unlocking position, the automobile front cover lock is in an unlocking state;

a limiting structure and a stress structure are arranged on the pawl body (21);

the automobile front cover lock further comprises a primary and secondary claw release triggering mechanism (3) arranged on the base (1), the primary and secondary claw release triggering mechanism (3) comprises a primary claw body (31) and a secondary claw body (32) rotatably arranged on the primary claw body (31), and the secondary claw body (32) can rotate while moving along with the primary claw body (31);

when the automobile front cover lock is in a full lock state, the main claw body (31) moves and the sub claw body (32) rotates at the same time, so that the sub claw body (32) is in contact with the limiting structure, and the limiting structure enables the sub claw body (32) not to move until the sub claw body is in contact with the stress structure; the female pawl body (31) moves, the female pawl body (31) can be made to approach and act on the stress structure, the limiting structure moves towards the direction away from the sub pawl body (32), the pawl body (21) moves from a first engagement position to a second engagement position, and therefore the ratchet wheel body (23) can move from a full locking position to a half locking position;

When the automobile front cover lock is in a half-locking state, the main claw body (31) moves and the sub-claw body (32) rotates, so that the sub-claw body (32) approaches and acts on the stress structure, the pawl body (21) moves from a second engagement position to a separation position, and the ratchet wheel body (23) can move from the half-locking position to an unlocking position.

2. The double-pull unlocked automotive front cover lock of claim 1, wherein:

be provided with on pawl body (21) be used for with female claw body (31) and sub-claw body (32) complex atress portion (214), pawl body (21) are in with rotatable mode setting on base (1), limit structure is the up end of atress portion (214), the atress structure is the right-hand member face of atress portion (214), the up end of atress portion (214) orientation the rotation center of pawl body (21), the right-hand member face of atress portion (214) orientation sub-female claw release trigger mechanism (3).

3. The double-pull unlocked automotive front cover lock of claim 1, wherein: the female claw body (31) is connected with the base (1) in a rotatable mode, and when the female claw body (31) rotates anticlockwise, one end, far away from the rotation center of the female claw body (31), can approach and act on the stress structure, so that the pawl body (21) moves from a first engagement position to a second engagement position.

4. The double-pull unlocked automotive front cover lock of claim 2, wherein:

a force application part (313) is arranged at one end of the female claw body (31) far away from the rotation center of the female claw body;

when the automobile front cover lock is in a full lock state, the force application part (313) acts on the force application structure to enable the force application part (214) to move leftwards so as to enable the pawl body (21) to move to a second engagement position;

when the automobile front cover lock is in a half-locking state, the sub-claw body (32) acts on the stress structure to enable the stress part (214) to move leftwards, so that the pawl body (21) moves to a separation position.

5. The double pull unlocked automotive front cover lock of claim 4, wherein: the sub-claw body (32) is rotatably arranged at one end of the main-claw body (31) far away from the rotation center of the main-claw body, and the sub-claw body (32) can extend out of the force application part (313) towards the direction approaching to the force receiving part (214) in a counterclockwise rotation mode.

6. The double pull unlocked automotive front cover lock of claim 5, wherein:

when the pawl body (21) is positioned at a first engagement position, the sub-pawl body (32) extending out of the force application part (313) can be abutted against the upper end surface of the force receiving part (214); the force application part (313) can approach and act on the right end surface of the force receiving part (214) so as to enable the pawl body (21) to rotate from a first engagement position to a second engagement position;

When the pawl body (21) is located at the second engagement position, the sub-pawl body (32) extending from the force application portion (313) can approach and act on the right end face of the force receiving portion (214) so as to enable the pawl body (21) to move from the second engagement position to the separation position.

7. The double-pull unlocked automotive front cover lock of claim 2, wherein: the primary and secondary claw release triggering mechanism (3) further comprises a secondary claw elastic element (36), and the secondary claw elastic element (36) enables the secondary claw body (32) to have a movement trend of anticlockwise rotation.

8. The double pull unlocked automotive front cover lock of claim 7, wherein: the primary and secondary claw release trigger mechanism (3) further comprises a primary claw return structure (37), the primary claw return structure (37) and the stress parts (214) are respectively positioned on two different sides of the primary claw body (32), and when the primary claw body (31) moves towards a direction away from the stress structure, the primary claw return structure (37) can overcome the elasticity of the primary claw elastic element (36) to enable the primary claw body (32) to rotate clockwise so that the primary claw body (32) protrudes upwards from the primary claw body (31).

9. The double pull unlocked automotive front cover lock of claim 4, wherein: the upper portion of female claw body (31) is provided with spacing turn-ups (311), spacing turn-ups (311) can be restricted sub-claw body (32) anticlockwise pivoted stroke, in order to guarantee sub-claw body (32) towards be close to direction of atress portion (214) stretch out in forcing portion (313).

10. The double-pull unlocked automotive front cover lock of claim 1, wherein: the primary and secondary claw release triggering mechanism (3) further comprises a primary claw elastic element (33), and the primary claw elastic element (33) enables the primary claw body (31) to have a clockwise rotation movement trend.

11. The double-pull unlocked automotive front cover lock of claim 1, wherein: the primary and secondary claw release trigger mechanism (3) further comprises a first primary claw limiting structure (34) and a second primary claw limiting structure (35) which are respectively arranged on the left side and the right side of the primary claw body (31).

12. The double-pull unlocked automotive front cover lock of claim 11, wherein: when the female claw body (31) is abutted against the second female claw limiting structure (35), a gap is reserved between the pawl body (21) and the primary and secondary claw release triggering mechanism (3).

13. The double-pull unlocked automotive front cover lock of claim 1, wherein: the primary and secondary claw release trigger mechanism (3) further comprises a primary claw rotating shaft (38) and a secondary claw rotating shaft (39), the primary claw body (31) is rotationally connected with the base (1) through the primary claw rotating shaft (38), and the secondary claw body (32) is rotationally connected with the primary claw body (31) through the secondary claw rotating shaft (39).

14. The double pull unlocked automotive front cover lock of claim 4, wherein: the ratchet body (21) is provided with a first pawl tooth (211) and a second pawl tooth (212), and the ratchet body (23) is provided with ratchet teeth (231); the ratchet body (23) is rotatably connected with the base (1);

when the pawl body (21) is in a first engaged position, the first pawl tooth (211) extends into the rotational path of the ratchet tooth (231);

when the pawl body (21) is in a second engagement position, the first pawl tooth (211) is located outside the rotational locus of the ratchet tooth (231), and the second pawl tooth (212) extends into the rotational locus of the ratchet tooth (231);

When the pawl body (21) is in the disengaged position, the pawl body (21) is located outside the rotational locus of the ratchet teeth (231).

15. The double pull unlocked automotive front cover lock of claim 14, wherein: the automobile front cover lock is characterized in that a ratchet blocking edge (11) is arranged on the base (1), when the ratchet body (23) is located at the unlocking position, the ratchet body (23) abuts against the ratchet blocking edge (11), and the automobile front cover lock is in the unlocking state.

16. The double pull unlocked automotive front cover lock of claim 15, wherein: the pawl body (21) also has an unlocking check position;

the ratchet teeth (231) extend downwards along the circumferential direction to form a limiting part (232), and the pawl body (21) is provided with a non-return part (213);

when the ratchet wheel body (23) is located at the unlocking position and the automobile front cover lock is in the unlocking state, the pawl body (21) moves from the separation position to the unlocking check position, and the check part (213) abuts against the limiting part (232).

17. The double pull unlocked automotive front cover lock of claim 16, wherein: the first pawl tooth (211), the second pawl tooth (212) and the non-return part (213) are arranged in sequence from bottom to top.

18. The double pull unlocked automotive front cover lock of claim 16, wherein: the check part (213) is provided with an arc concave surface, and the limiting part (232) is provided with an arc convex surface which is used for being fitted with the arc concave surface in a conformal mode.

19. The double pull unlocked automotive front cover lock of claim 16, wherein: the first pawl tooth (211), the second pawl tooth (212) and the non-return part (213) are all positioned below the rotation center of the ratchet body (23), and the force application part (313) and the sub-pawl body (32) are all positioned above the rotation center of the main pawl body (31).

20. The double-pull unlocked automotive front cover lock of claim 1, wherein: the primary and secondary claw release trigger mechanism (3) further comprises a inhaul cable (4), the inhaul cable (4) is connected with the primary claw body (31), and the inhaul cable (4) can drive the primary claw body (31) to rotate anticlockwise.

21. The double pull unlocked automotive front cover lock of claim 14, wherein: the ratchet pawl interlock mechanism (2) further comprises a pawl elastic element (22), a ratchet elastic element (25), a ratchet rotating shaft (27) and a pawl rotating shaft (26), wherein the ratchet body (23) is rotationally connected with the base (1) through the ratchet rotating shaft (27), the pawl body (21) is rotationally connected with the base (1) through the pawl rotating shaft (26), the pawl elastic element (22) enables the pawl body (21) to have a motion trend of anticlockwise rotation, and the ratchet elastic element (25) enables the ratchet body (23) to have a motion trend of clockwise rotation.

22. The double pull unlocked automotive front cover lock of claim 21, wherein: the pawl elastic element (22) is a torsion spring, one connecting rotating arm of the pawl elastic element (22) is connected with the base (1), and the other connecting rotating arm of the pawl elastic element (22) abuts against the left end face of the stress part (214).

23. The double pull unlocked automotive front cover lock of claim 21, wherein:

a locking block (233) is arranged on the ratchet wheel body (23), the locking block (233) is positioned above the ratchet wheel teeth (231), and a locking groove (234) for accommodating an automobile front cover lock pin (5) is formed between the locking block (233) and the ratchet wheel teeth (231);

when the ratchet wheel body (23) is positioned at the full locking position or the half locking position, the opening direction of the locking groove (234) is leftwards, and the locking block (233) can limit the front cover lock pin (5) positioned in the locking groove (234) to move upwards so as to enable the front cover lock of the automobile to be in the full locking state or the half locking state;

when the ratchet wheel body (23) is positioned at the unlocking position, the opening direction of the locking groove (234) is upward, and the locking block (233) cannot limit the upward movement of the automobile front cover lock pin (5) positioned in the locking groove (234) so as to enable the automobile front cover lock to be in the unlocking state.

24. An automobile, characterized in that: a front hood lock for a vehicle comprising the lock according to any one of claims 1 to 23.