CN214403129U - Automobile front cover lock with double-pull function - Google Patents

Abstract

The utility model relates to an automobile front cover lock with double-pull function, which comprises a locking component for locking the automobile front cover and an unlocking component for unlocking the locking component, wherein the locking component comprises a ratchet wheel component, a pawl component, a lower shell and an upper shell; ratchet subassembly includes ratchet, ratchet installation axle and ratchet torsional spring, the ratchet pass through the ratchet installation axle install in between lower casing and the last casing, pawl subassembly includes pawl, pawl installation axle and pawl torsional spring, the pawl pass through the pawl installation axle install in between lower casing and the last casing, the unblock subassembly includes first release lever, second release lever, first elastic component and first release lever installation axle, first release lever and second release lever are installed on lower casing through first release lever installation axle. The utility model discloses a pull twice handle in succession and can open the protecgulum of car, it is very convenient to use.

Description

Automobile front cover lock with double-pull function

Technical Field

The utility model relates to a car protecgulum lock, concretely relates to car protecgulum lock with two functions of drawing.

Background

The automobile front cover inner plate is provided with a lock system to lock the automobile front cover on the automobile body, so as to prevent dangerous events caused by sudden opening of the front cover in the driving process of the automobile. At present, a handle is pulled once in a vehicle to unlock the front cover by pulling an unlocking connecting rod once at the position of the front cover, so that the front cover is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides an automobile front cover lock with two functions of drawing, this front cover lock draws twice handle in the car in succession and can opens, need not to dial an unblock connecting rod in front cover department, and it is very convenient to use.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

an automobile front cover lock with a double-pull function comprises a locking assembly and an unlocking assembly, wherein the locking assembly is used for locking an automobile front cover, the unlocking assembly is used for unlocking the locking assembly, and the locking assembly comprises a ratchet wheel assembly, a pawl assembly, a lower shell and an upper shell;

the ratchet assembly comprises a ratchet wheel, a ratchet wheel mounting shaft and a ratchet wheel torsional spring, the ratchet wheel is mounted between the lower shell and the upper shell through the ratchet wheel mounting shaft, the ratchet wheel can rotate around the ratchet wheel mounting shaft, the ratchet wheel torsional spring is sleeved on the ratchet wheel mounting shaft, and the ratchet wheel torsional spring can drive the ratchet wheel to reset;

the pawl assembly comprises a pawl, a pawl mounting shaft and a pawl torsion spring, the pawl is mounted between the lower shell and the upper shell through the pawl mounting shaft, the pawl can rotate around the pawl mounting shaft, the pawl torsion spring is sleeved on the pawl mounting shaft and can drive the pawl to reset, and the pawl and the ratchet can be mutually buckled to enable the automobile front cover to be in a locked state;

the unlocking assembly comprises a first release lever, a second release lever, a first elastic piece and a first release lever mounting shaft, wherein the first release lever and the second release lever are mounted on the lower shell through the first release lever mounting shaft, the first release lever and the second release lever can rotate around the first release lever mounting shaft, the second release lever is rotatably connected to the pawl mounting shaft, the first release lever is connected to the lower shell through the first elastic piece and connected to the external handle through a pull cable, and the first elastic piece is used for resetting the first release lever; when external force pulls the first release lever through the inhaul cable, the first release lever rotates and can drive the pawl to rotate around the pawl mounting shaft, so that the pawl is separated from the ratchet wheel, and meanwhile, the ratchet torsion spring drives the ratchet wheel to reset, so that the automobile front cover is in an unlocking state.

Preferably, the lower shell is provided with a locking groove, a first mounting hole, a second mounting hole and a first stop member, and the upper shell is provided with a clamping groove, a third mounting hole, a fourth mounting hole and a second stop member.

Preferably, the ratchet wheel is provided with a ratchet wheel locking part, a ratchet wheel mounting shaft hole and a ratchet wheel rivet hole, the ratchet wheel mounting shaft sequentially penetrates through the third mounting hole of the upper shell, the ratchet wheel mounting shaft hole and the first mounting hole of the lower shell, a ratchet wheel rivet is riveted in the ratchet wheel rivet hole, and the ratchet wheel rivet is arranged in the locking groove of the lower shell.

Preferably, the ratchet torsion spring is sleeved on the ratchet mounting shaft, one end of the ratchet torsion spring is abutted against the ratchet rivet, the other end of the ratchet torsion spring is fixed in the clamping groove of the upper shell, and when the ratchet and the pawl are mutually buckled, the ratchet torsion spring is in a twisted state.

Preferably, the pawl is provided with a pawl locking part, a pawl mounting shaft hole and a support arm, the pawl mounting shaft sequentially penetrates through a fourth mounting hole of the upper shell, the pawl mounting shaft hole and a second mounting hole of the lower shell, the pawl mounting shaft is sleeved with a bushing, and the ratchet locking part of the ratchet wheel is mutually buckled with the pawl locking part of the pawl to lock the automobile front cover.

Preferably, the pawl torsion spring is sleeved on the pawl mounting shaft, one end of the pawl torsion spring abuts against the ratchet wheel mounting shaft, the other end of the pawl torsion spring abuts against the support arm of the pawl, and when the ratchet wheel and the pawl are mutually buckled, the pawl torsion spring is in a natural state.

Preferably, the unblock subassembly still includes the second elastic component, be equipped with bending portion, protruding portion and pulling portion on the first release lever, the cable is connected in this pulling portion, and when the automobile bonnet was in complete locking state, the protruding portion laminate in the support arm of pawl, the second elastic component cover is located first release lever installation axle, and its one end supports and leans on in the second release lever, and the other end supports and leans on in the bending portion of first release lever.

Preferably, the second release lever is provided with a first limit portion, a second limit portion, a toggle member and a mounting groove, the pawl mounting shaft penetrates through the mounting groove of the second release lever, when the automobile front cover is in a complete locking state, the second limit portion of the second release lever abuts against a second stop member of the upper shell, after the first release lever rotates for a certain angle relative to the second release lever, the bending portion of the first release lever abuts against the toggle member of the second release lever to drive the second release lever to rotate together, and after the second release lever rotates for a certain angle around the pawl mounting shaft, the first limit portion on the second release lever abuts against a first stop member of the lower shell.

The utility model has the advantages that: the utility model mainly comprises a ratchet wheel component, a pawl component and an unlocking component, wherein the ratchet wheel component and the pawl component are arranged between an upper shell and a lower shell, the unlocking component is arranged on the lower shell, one side of a first release lever in the unlocking component is connected with the lower shell through a first elastic piece, the other side of the first release lever is connected with an external handle through a guy cable, when a front cover of an automobile is in a full locking state, the pawl and the ratchet wheel are mutually buckled, at the moment, when external force pulls the guy cable through the handle and further pulls the first release lever, the first release lever pushes the pawl to rotate to separate the pawl from the ratchet wheel, the ratchet wheel rotates a certain angle under the restoring force action of a ratchet torsion spring and then is mutually buckled with the pawl again, at the moment, the ratchet wheel is in a half locking state, after the external force disappears, the first release lever resets under the action of the first elastic piece, the first release lever is pulled again, the first release lever drives the pawl to rotate, so that the pawl is separated from the ratchet wheel again, the ratchet wheel rotates under the action of the restoring force of the ratchet wheel torsion spring and is completely separated from the pawl, and the ratchet wheel is in a fully-open state at the moment, so that the unlocking operation of the automobile front cover is completed. The utility model discloses a stimulate twice handle in succession and can open the protecgulum of car, it is very convenient to use, just the utility model has the advantages of simple overall structure, the installation is convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention in a fully locked state;

FIG. 2 is a schematic structural view of the present invention in a fully open state;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a schematic structural view of the lower housing of the present invention;

fig. 5 is a schematic structural view of the upper housing of the present invention;

FIG. 6 is a schematic view of the ratchet wheel of the present invention;

FIG. 7 is a schematic view of the structure of the pawl of the present invention;

fig. 8 is a schematic structural view of a first release lever in the present invention;

fig. 9 is a schematic structural view of a second release lever according to the present invention;

fig. 10 is a flow chart of the first pulling of the first release lever according to the present invention;

fig. 11 is a flow chart of the present invention for pulling the first release lever a second time;

in the figure:

10-ratchet wheel component, 11-ratchet wheel mounting shaft, 12-ratchet wheel torsion spring, 13-ratchet wheel rivet,

20-ratchet wheel, 21-ratchet wheel locking part, 22-ratchet wheel mounting shaft hole and 23-ratchet wheel rivet hole;

30-pawl assembly, 31-pawl mounting shaft, 32-bushing, 33-pawl torsion spring, 40-pawl, 41-pawl locking part, 42-pawl mounting shaft hole and 43-support arm;

50-unlocking assembly, 51-first elastic member, 52-second elastic member, 53-first release lever mounting shaft, 54-first release lever, 55-bending part, 56-projection, 57-pulling cable, 58-pulling part, 60-second release lever, 61-first limiting part, 62-second limiting part, 63-toggle piece, 64-mounting groove;

70-lower shell, 71-lock groove, 72-first mounting hole, 73-second mounting hole, 74-first stop piece, 80-upper shell, 81-lock groove, 82-third mounting hole, 83-fourth mounting hole, 84-second stop piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Example (b): as shown in fig. 1 to 11, an automobile front cover lock with double-pull function is characterized in that: the front cover locking device comprises a locking assembly for locking a front cover of an automobile and an unlocking assembly 50 for unlocking the locking assembly, wherein the locking assembly comprises a ratchet assembly 10, a pawl assembly 30, a lower shell 70 and an upper shell 80;

the ratchet assembly 10 includes a ratchet 20, a ratchet mounting shaft 11 and a ratchet torsion spring 12, the ratchet 20 is mounted between the lower housing 70 and the upper housing 80 through the ratchet mounting shaft 11, the ratchet 20 can rotate around the ratchet mounting shaft 11, the ratchet torsion spring 12 is sleeved on the ratchet mounting shaft 11, and the ratchet torsion spring 12 can drive the ratchet 20 to return;

the pawl assembly 30 comprises a pawl 40, a pawl mounting shaft 31 and a pawl torsion spring 33, wherein the pawl 40 is mounted between the lower shell 70 and the upper shell 80 through the pawl mounting shaft 31, the pawl 40 can rotate around the pawl mounting shaft 31, the pawl torsion spring 33 is sleeved on the pawl mounting shaft 31, the pawl torsion spring 33 can drive the pawl 40 to reset, and the pawl 40 and the ratchet wheel 20 can be mutually buckled to enable the automobile front cover to be in a locked state;

the unlocking assembly 50 comprises a first release lever 54, a second release lever 60, a first elastic member 51 and a first release lever mounting shaft 53, wherein the first release lever 54 and the second release lever 60 are mounted on the lower housing 70 through the first release lever mounting shaft 53, the first release lever 54 and the second release lever 60 can rotate around the first release lever mounting shaft, the second release lever 60 is rotatably connected to the pawl mounting shaft 31, the first release lever 54 is connected to the lower housing through the first elastic member 51, the first release lever 54 is connected to the external handle through a pull cable 57, and the first elastic member 51 is used for resetting the first release lever 54; when an external force pulls the first release lever 54 through the cable 57, the first release lever 54 rotates and can drive the pawl 40 to rotate about the pawl mounting axle 31 to disengage the pawl from the ratchet wheel, while the ratchet torsion spring 12 drives the ratchet wheel 20 to return to an unlocked state of the automobile hood.

The reset state of the ratchet wheel 20 is that the ratchet wheel is in a full-open state, namely that the automobile front cover is in an unlocked state, and the reset state of the pawl 40 is that the pawl is in a full-lock state, namely that the automobile front cover is in a locked state; the utility model mainly comprises a ratchet assembly 10, a pawl assembly 30 and an unlocking assembly 50, wherein the ratchet assembly 10 and the pawl assembly 30 are installed between an upper shell 80 and a lower shell 70, the unlocking assembly 50 is installed on the lower shell 70, one side of a first release lever 54 in the unlocking assembly is connected with the lower shell 70 through a first elastic piece 51, the first elastic piece 51 can adopt a spring, the other side of the first release lever is connected with an external handle through a guy cable 57, when a front cover of an automobile is in a locking state, the pawl 40 and the ratchet 20 are mutually buckled, the ratchet is in a full locking state, at the moment, the first release lever 54 is mutually jointed with the pawl 40, when external force pulls the guy cable 57 through the handle to further pull the first release lever 54, the first release lever 54 pushes the pawl 40, the pawl rotates around a pawl installation shaft 31, so that the pawl 40 is separated from the ratchet 20, the ratchet 20 is mutually buckled with the pawl again after rotating a certain angle under the restoring force of a ratchet torsion spring 12, at the moment, the ratchet wheel is in a half-locking state, and after the external force disappears, the first release lever 54 is reset under the action of the first elastic piece 51, the first release lever 54 is pulled again, the first release lever 54 drives the pawl 40 to rotate again, so that the pawl is disengaged from the ratchet wheel 20 again, the ratchet wheel 20 rotates under the action of the restoring force of the ratchet wheel torsion spring to be disengaged from the pawl 40, and at the moment, the ratchet wheel is in a fully-open state, so that the unlocking operation of the automobile front cover is completed. The utility model discloses a stimulate twice handle in succession and can open the protecgulum of car, it is very convenient to use, just the utility model has the advantages of simple overall structure, the installation is convenient. )

As shown in fig. 4 and 5, the lower housing 70 is provided with a locking groove 71, a first mounting hole 72, a second mounting hole 73 and a first stopper 74, and the upper housing 80 is provided with a locking groove 81, a third mounting hole 82, a fourth mounting hole 83 and a second stopper 84.

As shown in fig. 6, the ratchet 20 is provided with a ratchet locking portion 21, a ratchet mounting shaft hole 22 and a ratchet rivet hole 23, the ratchet mounting shaft 11 sequentially passes through the third mounting hole 82 of the upper housing, the ratchet mounting shaft hole 22 and the first mounting hole 72 of the lower housing, a ratchet rivet 13 is riveted in the ratchet rivet hole 23, and the ratchet rivet 13 is placed in the locking groove 71 of the lower housing. The ratchet locking part 21 is used for being buckled with the pawl 40, the ratchet mounting shaft 11 can adopt a rivet, the rivet is used for riveting the ratchet, the upper shell and the lower shell, and after the ratchet is separated from the pawl, the ratchet can rotate around the ratchet mounting shaft under the action of a ratchet torsion spring.

The ratchet torsion spring 12 is sleeved on the ratchet mounting shaft 11, one end of the ratchet torsion spring abuts against the ratchet rivet 13, the other end of the ratchet torsion spring is fixed in the clamping groove 81 of the upper shell, and when the ratchet 20 and the pawl 40 are mutually buckled, the ratchet torsion spring 12 is in a twisted state. Therefore, when the ratchet 20 is disengaged from the pawl 40, the ratchet rivet 13 slides along the lock groove 71 of the lower housing under the restoring force of the ratchet torsion spring 12, so that the front cover of the automobile is opened; when the automobile front cover is locked, the ratchet wheel is limited by the pawl, the ratchet wheel torsion spring is always in a twisted state, after the ratchet wheel is separated from the pawl, the ratchet wheel torsion spring enables the ratchet wheel to reset by utilizing the restoring force effect of the ratchet wheel torsion spring, and the automobile front cover is in an open state at the moment.

As shown in fig. 7, the pawl 40 is provided with a pawl locking portion 41, a pawl mounting shaft hole 42 and a support arm 43, the pawl mounting shaft 31 sequentially passes through the fourth mounting hole 83 of the upper housing, the pawl mounting shaft hole 42 and the second mounting hole 73 of the lower housing, the bushing 32 is sleeved on the pawl mounting shaft 31, and the ratchet locking portion 21 of the ratchet and the pawl locking portion 41 of the pawl are mutually locked to lock the front cover of the automobile.

The pawl torsion spring 33 is sleeved on the pawl mounting shaft 31, one end of the pawl torsion spring is abutted against the ratchet wheel mounting shaft 11, the other end of the pawl torsion spring is abutted against the support arm 43 of the pawl, and when the ratchet wheel 20 and the pawl 40 are mutually buckled, the pawl torsion spring 33 is in a natural state. The pawl installation axle 31 can be the rivet, and this rivet is with last casing, second release lever, pawl and lower casing riveting, when pawl 40 breaks away from ratchet 20 under the effect of first release lever, pawl torsional spring 33 is in the distortion state, and the ratchet rotates certain angle under the effect of ratchet torsional spring and buckles with the pawl once more, and the pawl torsional spring is in the distortion state always, and the back ratchet breaks away from the pawl after the car protecgulum is closed, and under the effect of pawl torsional spring 33 restoring force, pawl 40 buckles with ratchet 20 once more, and the pawl resets promptly, and the car protecgulum is locked once more.

The unlocking assembly 50 further includes a second elastic member 52, as shown in fig. 8, the first release lever 54 is provided with a bent portion 55, a protruding portion 56 and a pulling portion 58, the cable 57 is connected to the pulling portion 58, when the front cover of the automobile is in a complete locking state, the protruding portion 56 is attached to the support arm 43 of the pawl, the second elastic member 52 is sleeved on the first release lever mounting shaft 53, and one end of the second elastic member abuts against the second release lever 60, and the other end abuts against the bent portion 55 of the first release lever. The primary release lever mounting shaft 53 is a rivet which rivets the primary release lever 54 and the secondary release lever 60, and the primary and secondary release levers can rotate around the rivet, and the secondary elastic member 52 may be a torsion spring to ensure the normal operation of the primary and secondary release levers by properly designing the elastic force of the primary and secondary elastic members to ensure that the primary release lever first rotates around the primary release lever mounting shaft when the primary release lever is pulled.

As shown in fig. 9, the second release lever 60 is provided with a first limit portion 61, a second limit portion 62, a toggle member 63 and a mounting slot 64, the pawl mounting shaft 31 is inserted into the mounting slot 64 of the second release lever, when the front cover of the automobile is in a complete locking state, the second limit portion 62 of the second release lever 60 abuts against the second stop member 84 of the upper housing, when the first release lever 54 rotates a certain angle relative to the second release lever 60, the bent portion 55 of the first release lever 54 abuts against the toggle member 63 of the second release lever 60 to drive the second release lever 60 to rotate together, and when the second release lever 60 rotates a certain angle around the pawl mounting shaft 31, the first limit portion 61 of the second release lever 60 abuts against the first stop member 74 of the lower housing. The pawl mounting shaft 31 passes through the upper housing 80, the mounting groove 64 of the secondary release lever, the pawl 40 and the lower housing 70 in this order, the secondary release lever 60 and the pawl 40 can rotate around the pawl mounting shaft 31, and when the front cover of the automobile is in a complete locking state, the second limit portion 62 of the secondary release lever abuts against the second stop member 84 of the upper housing, so that the second stop member 84 is used for limiting the position of the secondary release lever, and the first stop member 74 of the lower housing is used for limiting the maximum stroke of the secondary release lever.

The utility model discloses an operation process: the steps are as follows, as shown in fig. 10 and 11, the arrows in the figures represent the flow of actions:

the method comprises the following steps: a first pull on the first release lever, the first of which is illustrated in fig. 10 with the front cover lock in the locked condition, the ratchet wheel 20 and pawl 40 in the fully locked condition, the pawl 40 in the initial, i.e., reset condition, with the pawl torsion spring 33 in the natural condition and the ratchet torsion spring 12 in the twisted condition, the first release lever 54 and the second release lever 60 in the initial condition; the first release lever 54 is pulled by the cable 57, and the pawl 40, the first release lever 54 and the second release lever 60 are mutually restrained and synchronously rotate relative to the pawl mounting shaft 31 until the first limit part 61 of the second release lever abuts against the first stop part 74 of the lower shell, and the state of the second drawing in fig. 10 is achieved;

step two: as shown in the second drawing of fig. 10, which shows the moment of full lock unlocking, the locking portions of the pawl 40 and the ratchet 20 are disengaged from each other, the secondary release lever 60 is in the maximum stroke state, and after the ratchet 20 is disengaged from the limitation of the pawl 40, the ratchet 20 is rotated to the half-locked state by the ratchet torsion spring 12 and is limited again by the pawl 40, as shown in the third drawing of fig. 10, and at the same time, the primary release lever and the secondary release lever are reset by the first elastic member 51 after the unlocking tension is stopped, as shown in the fourth drawing of fig. 10, which shows the front cover lock in the half-locked state;

step three: pulling the first release lever a second time, as shown in fig. 11, the unlocking pull pulls the first release lever 54, which rotates about the first release lever mounting shaft 53 relative to the second release lever 60 until the bent portion 55 of the first release lever abuts against the toggle member 63 of the second release lever, as shown in the first drawing of fig. 11;

step four: the first release lever 54 continues to rotate the second release lever 60 synchronously with the external force until the protrusion 56 of the first release lever contacts the arm 43 of the pawl, and the first release lever 54, the second release lever 60 and the pawl 40 rotate synchronously again until the first limit portion 61 of the second release lever abuts against the first stop 74 of the lower housing and the pawl unlocks the ratchet wheel again, as shown in the second drawing of fig. 11;

step five: after the ratchet 20 is disengaged from the pawl 40, the ratchet 20 is rotated to the fully open state under the action of the ratchet torsion spring 12, as shown in the third drawing in fig. 11, the pawl and the ratchet are in the fully open state, the full release torsion of the ratchet torsion spring 12 is in the natural state, the ratchet is reset, the pawl torsion spring 33 is in the twisted state, the pawl is blocked by the ratchet, the first release lever 54 and the second release lever 60 are in the maximum stroke state, and the first elastic member 51 is stretched;

step six: after the unlocking pulling force is stopped, the first release lever 54 and the second release lever 60 are reset under the restoring force of the first elastic member 51, so that the whole unlocking process is completed, as shown in the fourth drawing in fig. 11, the ratchet wheel and the pawl are in the full-open position, the first release lever and the second release lever are reset to the initial position, the pawl and the ratchet wheel are buckled again, and the automobile front cover is unlocked; after the front cover of the automobile is closed, the ratchet wheel 20 returns to the full locking state, meanwhile, the pawl 40 is disengaged from the ratchet wheel 20 and the pawl is reset under the restoring force of the pawl torsion spring 33, the pawl and the ratchet wheel are buckled again, the front cover of the automobile is locked, and the state of the first graph in fig. 10 is returned again.

It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. The utility model provides an automobile bonnet lock with two functions that draw which characterized in that: the front cover unlocking device comprises a locking assembly and an unlocking assembly (50), wherein the locking assembly is used for locking a front cover of an automobile, and the unlocking assembly is used for unlocking the locking assembly, and comprises a ratchet assembly (10), a pawl assembly (30), a lower shell (70) and an upper shell (80);

the ratchet wheel assembly (10) comprises a ratchet wheel (20), a ratchet wheel mounting shaft (11) and a ratchet wheel torsion spring (12), the ratchet wheel (20) is mounted between the lower shell (70) and the upper shell (80) through the ratchet wheel mounting shaft (11), the ratchet wheel (20) can rotate around the ratchet wheel mounting shaft (11), the ratchet wheel torsion spring (12) is sleeved on the ratchet wheel mounting shaft (11), and the ratchet wheel torsion spring (12) can drive the ratchet wheel (20) to reset;

the pawl assembly (30) comprises a pawl (40), a pawl mounting shaft (31) and a pawl torsion spring (33), the pawl (40) is mounted between the lower shell (70) and the upper shell (80) through the pawl mounting shaft (31), the pawl (40) can rotate around the pawl mounting shaft (31), the pawl torsion spring (33) is sleeved on the pawl mounting shaft (31), the pawl torsion spring (33) can drive the pawl (40) to reset, and the pawl (40) and the ratchet wheel (20) can be mutually buckled to enable the automobile front cover to be in a locking state;

the unlocking assembly (50) comprises a first release lever (54), a second release lever (60), a first elastic member (51) and a first release lever mounting shaft (53), wherein the first release lever (54) and the second release lever (60) are mounted on a lower shell (70) through the first release lever mounting shaft (53), the first release lever (54) and the second release lever (60) can rotate around the first release lever mounting shaft, the second release lever (60) is rotationally connected to the pawl mounting shaft (31), the first release lever (54) is connected to the lower shell through the first elastic member (51), the first release lever (54) is connected to an external handle through a pull cable (57), and the first elastic member (51) is used for resetting the first release lever (54); when an external force pulls the first release lever (54) through the pull cable (57), the first release lever (54) rotates and can drive the pawl (40) to rotate around the pawl mounting shaft (31) so that the pawl is disengaged from the ratchet wheel, and meanwhile, the ratchet torsion spring (12) drives the ratchet wheel (20) to reset so that the automobile front cover is in an unlocking state.

2. The automotive front cover lock with double pull function according to claim 1, characterized in that: the lower shell (70) is provided with a locking groove (71), a first mounting hole (72), a second mounting hole (73) and a first stop piece (74), and the upper shell (80) is provided with a clamping groove (81), a third mounting hole (82), a fourth mounting hole (83) and a second stop piece (84).

3. The automotive front cover lock with double pull function according to claim 2, characterized in that: be equipped with ratchet hasp portion (21), ratchet installation shaft hole (22) and ratchet rivet hole (23) on ratchet (20), ratchet installation axle (11) wear to locate third mounting hole (82), ratchet installation shaft hole (22) of last casing and first mounting hole (72) of casing down in proper order, riveting ratchet rivet (13) in ratchet rivet hole (23), ratchet rivet (13) are arranged in the locked groove (71) of casing down.

4. The automotive front cover lock with double pull function according to claim 3, characterized in that: ratchet installation axle (11) is located to ratchet torsional spring (12) cover, and this ratchet torsional spring's one end support by in ratchet rivet (13), the other end is fixed in draw-in groove (81) of last casing, when ratchet (20) and pawl (40) each other the lock joint, ratchet torsional spring (12) are in the distortion state.

5. The automotive front cover lock with double pull function according to claim 3, characterized in that: be equipped with pawl hasp portion (41), pawl installation shaft hole (42) and support arm (43) on pawl (40), pawl installation axle (31) are worn to locate fourth mounting hole (83), pawl installation shaft hole (42) of last casing and second mounting hole (73) of casing down in proper order, just bush (32) are established to the cover on pawl installation axle (31), ratchet hasp portion (21) of ratchet with the mutual lock of pawl hasp portion (41) of pawl and with the locking of automobile front shroud.

6. The automotive front cover lock with double pull function according to claim 5, characterized in that: the pawl torsion spring (33) is sleeved on the pawl mounting shaft (31), one end of the pawl torsion spring abuts against the ratchet wheel mounting shaft (11), the other end of the pawl torsion spring abuts against the support arm (43) of the pawl, and when the ratchet wheel (20) and the pawl (40) are mutually buckled, the pawl torsion spring (33) is in a natural state.

7. The automotive front cover lock with double pull function according to claim 5, characterized in that: the unlocking assembly (50) further comprises a second elastic piece (52), a bending portion (55), a protruding portion (56) and a pulling portion (58) are arranged on the first release lever (54), the inhaul cable (57) is connected to the pulling portion (58), when the automobile front cover is in a complete locking state, the protruding portion (56) is attached to a support arm (43) of the pawl, the second elastic piece (52) is sleeved on the first release lever mounting shaft (53), one end of the second elastic piece abuts against the second release lever (60), and the other end of the second elastic piece abuts against the bending portion (55) of the first release lever.

8. The automotive front cover lock with double pull function according to claim 7, characterized in that: the second release lever (60) is provided with a first limit part (61), a second limit part (62), a toggle piece (63) and a mounting groove (64), the pawl mounting shaft (31) is arranged in a mounting groove (64) of the second release lever in a penetrating way, when the front cover of the automobile is in a complete locking state, the second limit part (62) of the second release lever (60) abuts against a second stop piece (84) of the upper shell, after the first release lever (54) is rotated a certain angle relative to the second release lever (60), the bending part (55) of the first release lever (54) is pressed against the poking part (63) of the second release lever (60) to drive the second release lever (60) to rotate together, when the second release lever (60) is rotated a certain angle about the pawl mounting axle (31), a first limiting part (61) on the second release lever (60) abuts against a first stop piece (74) of the lower shell.

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