CN211287053U - Hook bolt lock - Google Patents

Abstract

The utility model discloses a coupler knuckle lock, it includes: a lock shell (1) with a lock shell inner cavity; the coupler knuckle (2) is arranged in the inner cavity of the lock shell and is pivoted with the lock shell (1); the coupler knuckle lock comprises a coupler knuckle block (3) which is arranged in an inner cavity of the lock shell and is pivoted to the lock shell (1), and when the coupler knuckle lock is in a locked state, the coupler knuckle block (3) is clamped above the coupler knuckle (2) to limit the rotation of the coupler knuckle (2). The coupler knuckle lock adopting the structure has the advantages of better protection on the coupler knuckle block and capability of reducing the probability of abnormal action caused by the fact that the coupler knuckle block is picked.

Description

Hook bolt lock

Technical Field

The utility model relates to a tool to lock, especially a coupler lock.

Background

The existing coupler knuckle lock for the rolling shutter door comprises a lock body and a lock pin matched with the lock body, wherein the lock body is generally installed on a rolling shutter door body, and the lock pin is correspondingly installed on the ground. The lock body comprises a lock shell, a coupler knuckle and a coupler knuckle block, the coupler knuckle and the coupler knuckle block are arranged in an inner cavity of the lock shell, and the coupler knuckle block are pivoted with the lock shell. When the door is closed, the rolling gate is closed, the lock pin is inserted into the lock pin bayonet of the coupler knuckle, the coupler knuckle rotates to hook the lock pin, so that the lock pin and the lock pin are locked together, the coupler knuckle block is clamped with the coupler knuckle to limit the rotation of the coupler knuckle, and the coupler knuckle lock is in a locked state. When the lock is unlocked subsequently, the coupler knuckle block is separated from the clamping position through the locking and unlocking device, so that unlocking can be realized. Because the coupler knuckle is matched with the lock pin, an opening is required to be arranged at the coupler knuckle of the lock shell. The existing coupler knuckle lock does not well hide the coupler knuckle block, so that a thief can extend into the lock shell from the opening of the lock shell through a simple tool to pick the coupler knuckle block, so that the coupler knuckle is abnormally opened, and the coupler knuckle lock is invalid.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a coupler knuckle lock, the protection to coupler knuckle system piece is better, reduces the coupler knuckle system piece and is picked and dial the probability of improper action. The coupler knuckle lock is realized by the following technical scheme:

a coupler latch, comprising:

a lock shell having a lock shell inner cavity;

the coupler knuckle is arranged in the inner cavity of the lock shell and is pivoted with the lock shell;

the coupler knuckle locking device comprises a coupler knuckle block, a coupler knuckle locking block and a locking mechanism, wherein the coupler knuckle block is arranged in an inner cavity of the lock shell and is pivoted to the lock shell, and when the coupler knuckle lock is in a locking state, the coupler knuckle block is clamped above the coupler knuckle so as to limit the rotation of the coupler knuckle.

According to the utility model discloses coupler tongue lock has following beneficial effect at least: when the coupler knuckle lock is in a locked state, the coupler knuckle block is located above the coupler knuckle, the coupler knuckle block is well protected by the coupler knuckle, the coupler knuckle block is better hidden, when a thief selects the coupler knuckle block from the opening of the lock shell, the thief needs to cross the coupler knuckle to operate, the abnormal unlocking difficulty is high, the probability that the coupler knuckle block is selected to perform abnormal action is reduced, and the anti-theft performance and the safety are improved.

According to some embodiments of the utility model, the lower tip department of coupler knuckle system piece is provided with pin joint portion, the coupler knuckle passes through pin joint portion with the lock shell pin joint.

According to some embodiments of the invention, the upper portion of the coupler knuckle has a recess adapted to the shape of the lower end of the coupler knuckle, and the lower end of the coupler knuckle is engaged in the recess when the coupler knuckle lock is in the locked state.

According to some embodiments of the present invention, the lock further comprises an open/close lock device for controlling the knuckle block, the open/close lock device comprises a shift fork, a lock core, a linkage mechanism and a shift fork anti-return lock mechanism; the shifting fork is pivoted with the lock shell; the lock cylinder is arranged on the lock shell and is connected with the shifting fork and used for driving the shifting fork to rotate forwards and backwards; the linkage mechanism is arranged on the lock shell, and the shifting fork is linked with the knuckle block through the linkage mechanism when rotating forwards and backwards so as to drive the knuckle block to rotate to a position where the knuckle block is clamped with or separated from the knuckle block; the shifting fork anti-return locking mechanism is arranged on the lock shell, and the shifting fork anti-return locking mechanism limits the reverse rotation of the shifting fork after the shifting fork rotates to enable the knuckle block to enter a position where the knuckle block is separated from clamping connection with the knuckle block.

According to some embodiments of the present invention, the shift fork anti-return locking mechanism comprises a shift fork block and a first elastic reset structure; a shifting fork locking block is arranged on the shifting fork; the shifting fork block is pivoted to the lock shell and provided with a locking position and an avoiding position, when the shifting fork block is located at the locking position, the shifting fork block enters a rotating path of the shifting fork locking block, and when the shifting fork block is located at the avoiding position, the shifting fork block does not enter the rotating path of the shifting fork locking block; the first elastic reset structure is arranged on the lock shell and connected with the shifting fork block to enable the shifting fork block to have a tendency of moving towards the locking position; when the shifting fork is rotated in the forward direction, the shifting fork locking block can be picked up and the shifting fork block makes the shifting fork block is rotated to the avoiding position, so that the shifting fork locking block can cross the shifting fork block, the shifting fork locking block crosses behind the shifting fork block, the shifting fork block passes through the first elastic resetting structure is reset to the locking position, so that when the shifting fork rotates in the reverse direction, the shifting fork locking block can be clamped in the shifting fork block, the shifting fork locking block applies force at the clamping point in the shifting fork block, the shifting fork block has the trend of keeping away from the rotation of the avoiding direction.

According to some embodiments of the present invention, the locking and unlocking device further comprises a fork unlocking mechanism, the fork unlocking mechanism is disposed in the lock housing and is configured to release the fork from being locked by the fork anti-return locking mechanism; the shift fork release mechanism is including detecting piece and second elasticity reset structure, detect a swing joint in the lock shell and can be relative the lock shell removes, it has sense terminal and unblock driving lever to detect the piece, second elasticity reset structure set up in the lock shell makes the sense terminal of detecting piece have stretch out in the outer trend of lock shell when the sense terminal stretches out outward towards the lock shell, the unblock driving lever is stirred the shift fork dog makes its entering avoid the position, behind the income of sense terminal toward the lock shell, the unblock driving lever is kept away from the shift fork dog.

According to some embodiments of the present invention, the linkage mechanism includes a pull rod assembly and a third elastic reset structure, the pull rod assembly is movably connected to the lock case and can move laterally relative to the lock case, the third elastic reset structure is disposed on the lock case, the third elastic reset structure is connected to the knuckle block and makes the knuckle block have a tendency to reset to a position where the knuckle block is engaged with the knuckle block, a shift block is disposed on the shift fork, a first pull hook portion and a second pull hook portion are disposed at two ends of the pull rod assembly respectively, the first pull hook portion is disposed corresponding to an upper end of the knuckle block, and the second pull hook portion is disposed corresponding to the shift block of the shift fork; when the shifting fork rotates forwards, the shifting fork shifts the second draw hook part of the pull rod assembly through the shifting block so as to enable the pull rod assembly to move transversely, and the first draw hook part shifts the upper end part of the knuckle block so as to enable the knuckle block to rotate to a position where the knuckle block is separated from the knuckle block; when the shifting fork rotates reversely, the shifting block of the shifting fork moves in the direction away from the second hook pulling part so that the knuckle block can reset to the position clamped with the knuckle through the third elastic resetting structure.

According to some embodiments of the present invention, the coupler knuckle comprises a body portion, an upper stop and a lower stop, the upper stop and the lower stop are disposed on the same side of the body portion, the upper stop and the lower stop enclose a lock pin bayonet, the body portion is pivoted to the lock case; the upper part of the coupler knuckle is provided with a clamping block, and the lock shell is provided with a limiting structure for limiting the coupler knuckle block; the coupler knuckle has a hook locking state and an opening state, the lock pin bayonet faces to the transverse direction in the hook locking state, and the lock pin bayonet faces to the oblique lower side in the opening state; the coupler knuckle is in the coupler lock state the coupler knuckle system piece be in with when the position of coupler knuckle looks joint, joint piece joint is in one side of coupler knuckle system piece lower extreme, limit structure is spacing with one side the upper end of coupler knuckle system piece, so that the coupler knuckle is past in the rotatory direction of open state by the coupler knuckle system piece is spacing.

According to some embodiments of the present invention, a fourth elastic return structure is provided on the lock case, the fourth elastic return structure being connected to the coupler knuckle and causing the coupler knuckle to have a tendency to return to the open state; when the knuckle block is positioned at a position where the knuckle block is separated from being clamped with the knuckle, the fourth elastic reset structure resets the knuckle to the open state; the coupler knuckle is in open mode, just coupler knuckle system piece quilt the third elasticity reset structure orders about and past with during the position motion of coupler knuckle joint, coupler knuckle system piece butt in the coupler knuckle, the joint piece is located the downside of coupler knuckle system piece, when the coupler knuckle rotates toward the coupler lock state, the joint piece can be stirred coupler knuckle system piece make its toward with the coupler knuckle breaks away from the position of joint and rotates, so that the joint piece can cross coupler knuckle system piece and joint in one side of coupler knuckle system piece lower extreme.

According to some embodiments of the present invention, the locking and unlocking device further comprises an electric unlocking mechanism, the electric unlocking mechanism comprises a driving motor, a reduction box and a driving gear; the driving motor and the reduction gearbox are mounted on the lock shell, the output end of the driving motor is connected with the reduction gearbox, the driving gear is pivoted on the lock shell, the output end of the reduction gearbox is connected with the driving gear, a transversely arranged rack is arranged on the pull rod assembly, and the driving gear is meshed with the rack.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a coupler knuckle lock according to an embodiment of the present invention in a locked state;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a schematic view of a knuckle block of the knuckle lock of FIG. 1;

FIG. 5 is a schematic view of a knuckle of the knuckle lock of FIG. 1;

FIG. 6 is a schematic view of the knuckle block of FIG. 1 rotated to a position out of engagement with the knuckle;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is an enlarged view of FIG. 6 at D;

fig. 9 is a schematic view of the shackle lock with the body thereof removed from the ground, as seen in fig. 6;

FIG. 10 is an enlarged view at E of FIG. 9;

FIG. 11 is an enlarged schematic view at F of FIG. 9;

FIG. 12 is a schematic view of the knuckle block being pushed by the torsion spring toward a position where it is engaged with the knuckle, the knuckle being in an open state, and the knuckle block abutting against the knuckle;

FIG. 13 is an enlarged view at G of FIG. 12;

fig. 14 is an enlarged view at H of fig. 12.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 5, a coupler latch includes:

the lock shell 1 is provided with a lock shell inner cavity;

the coupler knuckle 2 is arranged in the inner cavity of the lock shell and is pivoted with the lock shell 1;

the coupler knuckle block 3 is arranged in the inner cavity of the lock shell and is pivoted to the lock shell 1, and when the coupler knuckle lock is in a locked state, the coupler knuckle block 3 is clamped above the coupler knuckle 2 to limit the rotation of the coupler knuckle 2.

It should be understood that the latch lock in the locked state means that the latch 2 enters a position where it can be latched with the striker 100 and the latch lock is in the closed state (state to be unlocked), and the striker 100 means a component used in cooperation with the latch 2 of the latch lock, generally installed on the ground or a door frame.

When the coupler knuckle lock is in a locked state, the coupler knuckle block 3 is located above the coupler knuckle 2, the coupler knuckle 2 can well protect the coupler knuckle block 3, the coupler knuckle block 3 is better hidden, when a thief selects the coupler knuckle block 3 from the opening of the lock shell 1, the operation of crossing the coupler knuckle 2 is needed, the difficulty of abnormal unlocking is high, the probability that the coupler knuckle block 3 is selected to operate abnormally is reduced, and the anti-theft performance and the safety are improved.

In the present embodiment, a pivot portion 31 is provided at a lower end portion of the knuckle block 3, and the knuckle 2 is pivotally connected to the lock case 1 through the pivot portion 31. When a thief selects the coupler knuckle block 3 from the opening of the lock shell 1, the position which is easy to stretch into is the lower end of the coupler knuckle block 3, and because the pin joint part 31 of the coupler knuckle block 3 is arranged at the lower end, when the coupler knuckle block 3 is selected, the arm of force is small, the shifting block 42 is difficult to be selected, and the difficulty of abnormal unlocking is further increased. In this embodiment, the pivot portion 31 is a pivot hole, and the lock case 1 is provided with a pivot shaft rotatably connected to the pivot portion 31. In other embodiments, the pivot portion 31 may be a pivot shaft, and a corresponding pivot hole is formed on the lock case 1 to cooperate with the pivot shaft. It should be understood that the lower end position of the knuckle piece 3 is referred to with reference to the posture shown in fig. 2 or fig. 4.

In the present embodiment, the upper part of the knuckle 2 has a notch 21 adapted to the shape of the lower end of the knuckle 2, and the lower end of the knuckle 2 is snapped into the notch 21 when the knuckle lock is in the locked state. The lower end of the coupler knuckle 2 is clamped through the notch 21, the force application position of the lifting is reduced, meanwhile, the coupler knuckle 2 and the coupler knuckle block 3 form mutual clamping, and the difficulty of abnormal unlocking is further increased. It should be understood that the upper position of the knuckle 2 is referenced with respect to the attitude shown in fig. 2 or fig. 5.

In the embodiment, the lock device also comprises an opening and closing lock device for controlling the knuckle block 3, wherein the opening and closing lock device comprises a shifting fork 4, a lock cylinder (not shown in the figure), a linkage mechanism 5 and a shifting fork anti-return locking mechanism 6; the shifting fork 4 is pivoted with the lock shell 1; the lock cylinder is arranged on the lock shell 1, and is connected with the shifting fork 4 and used for driving the shifting fork 4 to rotate forwards and backwards; the linkage mechanism 5 is arranged on the lock shell 1, and when the shifting fork 4 rotates forwards and backwards, the shifting fork is linked with the knuckle block 3 through the linkage mechanism 5 so as to drive the knuckle block 3 to rotate to a position where the knuckle block is clamped with or separated from the knuckle 2; the shifting fork anti-return locking mechanism 6 is arranged on the lock shell 1, and after the shifting fork 4 rotates to enable the knuckle block 3 to enter a position where the knuckle block 2 is separated from clamping connection, the shifting fork anti-return locking mechanism 6 limits the shifting fork 4 to rotate reversely. When the door is opened, the lock is unlocked by a key matched with the lock cylinder, the shifting fork 4 is driven to rotate by the key and the lock cylinder, so that the coupler knuckle block 3 is shifted to enable the coupler knuckle block 3 to be separated from the clamping position and not to be clamped with the coupler knuckle 2, the coupler knuckle 2 obtains the degree of freedom, and the door opening operation can be performed. The embodiment of the fork 4 pivoted to the lock case 1 can refer to the embodiment of the knuckle block 3 pivoted to the lock case 1, which is not described herein.

In some cases, for example, under the condition of improper operation, when a user rotates the key, the key is accidentally returned to the original position, so that the latch dog block 3 returns to the position clamped with the latch dog 2, the user mistakenly thinks that the door opening operation can be performed, and at the moment, the door opening not only can not open the door, but also can possibly damage the latch dog lock, and particularly, in the case of an electric door, the situation of damaging the door by pulling can easily occur. Through setting up shift fork anti-return locking mechanism 6, the key is rotatory after targetting in place, and shift fork 4 is locked in the direction of reverse rotation, and the effectual key return stroke that prevents causes the user to think that the coupler knuckle lock has opened, reduces the probability of damaging door and coupler knuckle lock.

In the present embodiment, the fork anti-return locking mechanism 6 includes a fork block 61, a first elastic return structure 62; a shifting fork locking block 41 is arranged on the shifting fork 4; the shifting fork block 61 is pivoted to the lock shell 1, the shifting fork block 61 is provided with a locking position and an avoiding position, when the shifting fork block 61 is in the locking position, the shifting fork block 61 enters a rotating path of the shifting fork locking block 41, and when the shifting fork block 61 is in the avoiding position, the shifting fork block 61 does not enter the rotating path of the shifting fork locking block 41; the first elastic reset structure 62 is arranged on the lock shell 1 and connected with the shifting fork block 61 to enable the shifting fork block 61 to have a tendency of moving to a locking position; when 4 forward rotations of shift fork, shift fork locking piece 41 can pick shift fork system piece 61 and make shift fork system piece 61 rotatory to dodging the position, so that shift fork locking piece 41 can cross shift fork system piece 61, shift fork locking piece 41 crosses shift fork system piece 61 back shift fork system piece 61 and resets to stopping the lock position through first elasticity reset structure 62 so that when 4 reverse rotation of shift fork, shift fork locking piece 41 can the joint in shift fork system piece 61, shift fork locking piece 41 is when the joint department application of force is in shift fork system piece 61, shift fork system piece 61 has the trend of avoiding the position direction rotation toward keeping away from. The embodiment of the shift fork block 61 pivoted to the lock case 1 can be referred to the embodiment of the latch dog block 3 pivoted to the lock case 1, which is not described herein. In order to avoid the shifting fork block 61 from accidentally rotating to an improper place, the shifting fork block 61 can be limited to rotate within a preset angle, specifically, an arc bar hole coaxial with the pivot axis is formed in the shifting fork block 61, a bayonet pin is fixedly arranged on the lock shell 1, and the bayonet pin is located in the arc bar hole. A pair of limit pins can be arranged on the lock case 1 and are respectively arranged on two sides of the shifting fork block 61 to limit the range of the rotation angle of the shifting fork block 61. The end positions of the shifting fork block 61 within the range of the limited rotation angle can respectively correspond to the locking position and the avoiding position, so that the shifting fork block 61 is limited to move between the locking position and the avoiding position.

In this embodiment, the first elastic reset structure 62 is a torsion spring, and both ends of the torsion spring are respectively abutted against the shifting fork block 61 and the lock case 1 and are in a compressed state, and the torsion spring presses the shifting fork block 61 to the locking position. In other embodiments, the first elastic return structure 62 may also be a spring, which is connected between the fork dog 61 and the lock housing 1 and is in a compressed state, and which presses the fork dog 61 into its locking position.

In this embodiment, the unlocking and locking device further comprises a fork unlocking mechanism 7, and the fork unlocking mechanism 7 is arranged on the lock case 1 and used for unlocking the fork locking mechanism 6 from locking the fork 4; the shifting fork unlocking mechanism 7 comprises a detection piece 71 and a second elastic reset structure 72, the detection piece 71 is movably connected to the lock shell 1 and can move relative to the lock shell 1, the detection piece 71 is provided with a detection end 711 and an unlocking shifting rod 712, the second elastic reset structure 72 is arranged on the lock shell 1 and enables the detection end 711 of the detection piece 71 to have a trend of extending out of the lock shell 1, when the detection end 711 extends out of the lock shell 1, the unlocking shifting rod 712 shifts the shifting fork block 61 to enable the shifting fork block to enter an avoiding position, and after the detection end 711 receives the shifting fork block from the lock shell 1, the unlocking shifting rod 712 is far away from the shifting fork block 61. The detecting element 71 can be used for detecting whether the lock body of the coupler knuckle lock leaves the ground or the door frame, when the lock body does not leave the ground or the door frame, the detecting end 711 of the detecting element 71 is pressed by the ground or the door frame and is retracted into the lock case 1, at this time, the unlocking shift lever 712 is far away from the shift fork block 61, and the shift fork block 61 is kept in the locking position through the second elastic reset structure 72; after the lock body of the coupler knuckle lock leaves the ground or the door frame, the detection end 711 extends out of the lock shell 1, and the unlocking shift lever 712 shifts the shift fork block 61 to force the shift fork block to enter the avoiding position, so that the shift fork block 61 loses the locking effect on the shift fork 4, and the shift fork 4 can move freely.

In other embodiments, the fork unlocking mechanism 7 may be an operating rod connected to the fork block 61, and the fork block 61 is directly returned to the escape position by the operating rod.

In this embodiment, a pair of bar holes are provided on the detecting member 71, and a pair of locking pins are correspondingly provided on the lock case 1, and the locking pins are arranged in the bar holes so that the detecting member 71 can move along the extending direction of the bar holes relative to the lock case 1. In other embodiments, the detecting member 71 and the lock case 1 may be movably connected to each other by a sliding block and a sliding slot or other suitable connection means.

In this embodiment, the second elastic return structure 72 is a torsion spring, two ends of the torsion spring are respectively abutted against the detecting member 71 and the lock case 1 and are in a compressed state, and the torsion spring pushes the detecting member 71 to the direction in which the detecting end 711 can extend out of the lock case 1. In other embodiments, the second resilient return structure 72 may also be a spring, which is connected between the detecting member 71 and the lock case 1 and is in a compressed state, and which urges the detecting member 71 towards a direction in which the detecting end 711 can extend out of the lock case 1.

In other embodiments, the fork anti-return locking mechanism 6 may also be a ratchet mechanism, the ratchet mechanism includes a ratchet wheel and a locking pawl, the ratchet wheel is arranged on the fork 4 and rotates together with the fork 4, the locking pawl is pivoted on the lock case 1, a spring is arranged between the locking pawl and the lock case 1 to enable the locking pawl to abut against the ratchet wheel, and the ratchet wheel and the locking pawl are matched to realize unidirectional rotation of the ratchet wheel, so that unidirectional rotation of the fork 4 is realized. When unlocking is required, the fork unlocking mechanism 7 can be an operating rod connected with the locking pawl, and the locking pawl is removed from the ratchet wheel through the operating rod, so that the fork 4 can rotate freely again.

In this embodiment, the linkage mechanism 5 includes a pull rod assembly 51 and a third elastic reset structure 52, the pull rod assembly 51 is movably connected to the lock case 1 and can move transversely relative to the lock case 1, the third elastic reset structure 52 is disposed on the lock case 1, the third elastic reset structure 52 is connected to the knuckle block 3 and enables the knuckle block 3 to have a tendency of resetting to a position clamped with the knuckle 2, the shift fork 4 has a shift block 42, two ends of the pull rod assembly 51 are respectively provided with a first hook portion 511 and a second hook portion 512, the first hook portion 511 is disposed corresponding to an upper end portion of the knuckle block 3, and the second hook portion 512 is disposed corresponding to the shift block 42 of the shift fork 4; when the shifting fork 4 rotates in the forward direction, the shifting fork 4 shifts the second pull hook part 512 of the pull rod assembly 51 through the shifting block 42 so as to enable the pull rod assembly 51 to move transversely, and the first pull hook part 511 shifts the upper end part of the knuckle block 3 so as to enable the knuckle block 3 to rotate to a position where the knuckle block is disengaged from the knuckle 2; when the shifting fork 4 rotates reversely, the shifting block 42 of the shifting fork 4 moves away from the second hook portion 512 so that the knuckle block 3 can be reset to the position clamped with the knuckle 2 through the third elastic reset structure 52. In this embodiment, the pull rod assembly 51 is formed by two transverse rods, each of which is movably connected to the lock housing 1 so as to be capable of transverse translation. Specifically, set up a plurality of bar holes of horizontal extension on the transverse bar, set up the bayonet lock on the lock shell 1, the bayonet lock setting is movable in the bar hole to make transverse bar can be relative lock shell 1 horizontal activity. In other embodiments, the pull rod assembly 51 and the lock shell 1 can also be movably connected in the transverse direction through the cooperation of the sliding groove and the sliding block. In this embodiment, the third elastic reset structure 52 is a torsion spring, two ends of the torsion spring are respectively abutted against the latch dog block 3 and the lock case 1 and are in a compressed state, and the torsion spring presses the latch dog block 3 to a clamping position between the latch dog block and the latch dog 2. In other embodiments, the third resilient return structure 52 may also be a spring connected between the catch 3 and the lock housing 1 in a compressed state, the spring pressing the catch 3 into its engaged position with the catch 2. It should be understood that lateral movement refers to the left and right direction as shown in the drawings.

In other embodiments, the linkage mechanism 5 may also be a planar linkage mechanism, and the planar linkage mechanism is connected with the shifting fork 4 and the knuckle block 3, and links the shifting fork 4 and the knuckle block 3 through the planar linkage mechanism.

In this embodiment, the coupler knuckle 2 includes a body 22, an upper stop 23 and a lower stop 24, the upper stop 23 and the lower stop 24 are disposed on the same side of the body 22, the upper stop 23 and the lower stop 24 enclose a lock pin bayonet 20, and the body 22 is pivoted to the lock case 1; the upper part of the coupler knuckle 2 is provided with a clamping block 25, and the lock shell 1 is provided with a limiting structure 11 for limiting the coupler knuckle block 3; the coupler knuckle 2 has a hook lock state in which the lock pin bayonet 20 is oriented in the lateral direction and an open state in which the lock pin bayonet 20 is oriented obliquely downward; when the coupler knuckle 2 is in a coupler locking state and the coupler knuckle block 3 is in a position clamped with the coupler knuckle 2, the clamping block 25 is clamped on one side of the lower end of the coupler knuckle block 3, and the limiting structure 11 limits the upper end of the coupler knuckle block 3 on the same side, so that the coupler knuckle 2 is limited by the coupler knuckle block 3 in the direction of rotating towards an opening state. When the coupler knuckle lock is in a locked state, namely the coupler knuckle 2 is in a hook lock state, and the coupler knuckle block 3 is in a position clamped with the coupler knuckle 2. The coupler knuckle 2 is in a hook locking state, the lock pin bayonet 20 faces to the transverse direction, and the lock pin 100 in the lock pin bayonet 20 cannot be separated from the coupler knuckle 2, namely, the door cannot be opened; if the coupler knuckle 2 is to enter the open state and the lock pin 100 can exit the lock pin bayonet 20, the coupler knuckle 2 needs to be rotated, the lock pin bayonet 20 faces obliquely downward again, the coupler knuckle 2 is clamped at the lower end of the coupler knuckle block 3 through the clamping block 25 in the direction that the coupler knuckle 2 rotates to the open state, the upper end of the coupler knuckle block 3 is limited by the limiting structure 11, one side of the coupler knuckle block 3, limited by the limiting structure 11, is the same as one side of the coupler knuckle block 3, clamped at the coupler knuckle block 3 by the clamping block 25 of the coupler knuckle 2, the coupler knuckle block 3 cannot be stirred in the direction that the coupler knuckle 2 rotates to the open state, the coupler knuckle 2 cannot rotate towards the open state, and the coupler knuckle lock is in the locked state. The hook lock state of the coupler knuckle 2 is locked through the structure, the structure is simple, and locking is stable. When the lock needs to be unlocked, when the latch dog block 3 rotates to a position where the latch dog block is separated from the position where the latch dog 2 is clamped, the latch dog 2 can freely rotate to the opening position, and therefore the lock pin 100 is separated.

In this embodiment, the body 22 of the coupler knuckle 2 is provided with a pivot hole, the lock case 1 is provided with a pivot, and the pivot connection between the coupler knuckle 2 and the lock case 1 is realized by the rotational connection between the pivot and the pivot hole, but it is also possible to provide a pivot hole on the lock case 1 and provide a pivot on the body 22 of the coupler knuckle 2, or to realize the pivot connection.

In this embodiment, the limiting structure 11 is a limiting pin, the pull rod assembly 51 is provided with a strip-shaped hole extending transversely, the limiting pin is slidably disposed in the strip-shaped hole, when the shifting block 42 of the shifting fork 4 is far away from the second hook portion 512, the knuckle block 3 is reset to the position clamped with the knuckle 2 through the third elastic reset structure 52, the limiting pin is located at the end portion of the strip-shaped hole, and the upper end of the knuckle block 3 abuts against the first hook portion 511, so that the upper end of the knuckle block 3 is limited. In other embodiments, the limiting structure 11 may be a protruding block on the lock case 1, the protruding block is disposed on one side of the knuckle block 3, and is engaged with the knuckle block 3 to limit further rotation of the knuckle block 3 when the knuckle block 3 rotates to a position where it is engaged with the knuckle 2, and may also limit the knuckle block 3.

In the embodiment, a fourth elastic reset structure 8 is arranged on the lock shell 1, and the fourth elastic reset structure 8 is connected with the coupler knuckle 2 and enables the coupler knuckle 2 to have a tendency of resetting to an open state; when the knuckle block 3 is positioned at a position separated from the position clamped with the knuckle 2, the fourth elastic reset structure 8 resets the knuckle 2 to an open state; when the coupler knuckle 2 is in an open state and the coupler knuckle block 3 is driven by the third elastic reset structure 52 to move towards the position clamped with the coupler knuckle 2, the coupler knuckle block 3 abuts against the coupler knuckle 2, the clamping block 25 is located on the lower side of the coupler knuckle block 3, and when the coupler knuckle 2 rotates towards a coupler lock state, the clamping block 25 can stir the coupler knuckle block 3 to enable the coupler knuckle block 3 to rotate towards the position separated from clamping with the coupler knuckle 2, so that the clamping block 25 can cross the coupler knuckle block 3 and be clamped on one side of the lower end of the coupler knuckle block 3. When the door is closed, when the lock pin 100 is vertically clamped into the lock pin bayonet 20 of the coupler knuckle 2 in an open state, the lock pin 100 enables the coupler knuckle 2 to rotate towards a coupler lock state, the coupler knuckle 2 in the rotating process stirs the coupler knuckle block 3 through the clamping block 25 to enable the coupler knuckle block 3 to rotate in a abdicating mode, then the clamping block 25 of the coupler knuckle 2 passes through the coupler knuckle block 3 to enable the coupler knuckle 2 to enter the coupler knuckle 2 state, and the coupler knuckle block 3 resets the coupler knuckle block 3 to a position clamped with the coupler knuckle 2 through the third elastic resetting structure 52, so that the coupler knuckle 2 is clamped. Above-mentioned structure has realized closing the door, and coupler knuckle 2's automatic kayser, when the door is opened the back, coupler knuckle 2 can reset to the open mode to realize the automatic kayser of next time. In the present embodiment, the fourth elastic return structure 8 is a spring, and the spring is respectively connected between the lock case 1 and the knuckle 2. In other embodiments, the fourth elastic return structure 8 may also be a torsion spring.

In this embodiment, the unlocking and locking device further includes an electric unlocking mechanism 9, and the electric unlocking mechanism 9 includes a driving motor 91, a reduction box 92 and a driving gear 93; the driving motor 91 and the reduction gearbox 92 are mounted on the lock shell 1, the output end of the driving motor 91 is connected with the reduction gearbox 92, the driving gear 93 is pivoted on the lock shell 1, the output end of the reduction gearbox 92 is connected with the driving gear 93, the pull rod assembly 51 is provided with a rack 513 transversely arranged, and the driving gear 93 is meshed with the rack 513. In this embodiment, the driving motor 91 is rotated forward and backward, so that the pull rod assembly 51 moves back and forth transversely, the position state of the coupler knuckle block 3 is controlled, electric unlocking and locking are realized, a lock cylinder of the lock cylinder is not required to be rotated by a key, and the use is convenient.

In order to realize unlocking control, a controller can be arranged in the lock shell 1 and is electrically connected with the driving motor 91, the controller is electrically connected with an identity confirmation module, the identity confirmation module can confirm a legal identity through a magnetic card, an ID induction card, remote control, a password, fingerprint identification, iris identification and the like, and then the driving motor 91 is controlled to rotate through the controller to unlock. The controller may be a single chip circuit or a PLC.

In this embodiment, the detecting member 71 is provided with a touch block 713, the lock case 1 is provided with a first travel switch 12, when the detecting end 711 extends out of the lock case 1, the touch block 713 can touch the first travel switch 12, and the first travel switch 12 is electrically connected with the controller; the lock shell 1 is provided with a second travel switch 13, when the coupler knuckle block 3 rotates to a position clamped with the coupler knuckle 2, the coupler knuckle block 3 touches the second travel switch 13, and the second travel switch 13 is electrically connected with the controller.

When the electric unlocking is carried out, after the legal identity is confirmed, the controller drives the driving motor 91 to rotate, so that the coupler knuckle block 3 rotates to the position where the coupler knuckle block is separated from the clamping connection with the coupler knuckle 2, the door is opened at the moment, the detection piece 71 extends outwards and touches the first travel switch 12, the controller is informed, and the controller informs the driving motor 91 to rotate reversely so that the coupler knuckle block 3 is reset to the clamping connection position to be locked next time. After the knuckle block 3 is reset to the engagement position, it touches the second travel switch 13, and informs the controller, which informs the driving motor 91 to stop rotating.

In this embodiment, the coupler knuckle 2, the coupler knuckle block 3, the lock pin 100 and the linkage mechanism 5 are disposed on two sides of the lock case 1, one lock cylinder and one shift fork 4 are disposed, two shift blocks 42 on the shift fork 4 are disposed and respectively correspond to the second hook portions 512 of the pull rod assemblies 51 of the corresponding linkage mechanism 5, and the shift fork 4 can simultaneously pull the two pull rod assemblies 51 to move when rotating, so as to link the two sets of coupler knuckles 2 and coupler knuckle blocks 3, thereby locking two ends of the lock case 1 with the lock pin 100.

For ease of understanding and explanation, referring to the drawings, in the present embodiment, the position of the rotation axis of the knuckle 2 is shown as the end of the arrow of the figure indication line 2a, the position of the rotation axis of the knuckle block 3 is shown as the end of the arrow of the figure indication line 3a, the position of the rotation axis of the shift fork block 61 is shown as the end of the arrow of the figure indication line 61a, and the position of the rotation axis of the shift fork 4 is shown as the end of the arrow of the figure indication line 4 a.

The specific working principle and process of the embodiment are as follows:

referring to fig. 1 to 3, at this time, the coupler knuckle lock is in a locked state, the coupler knuckle block 3 is in a position where it is engaged with the coupler knuckle 2, the lock pin bayonet 20 of the coupler knuckle 2 faces a transverse direction to be in a hook lock state, so that the lock pin 100 installed on the ground or a door frame is hook-locked, the upper end of the coupler knuckle block 3 abuts against the second hook portion 512 of the pull rod assembly 51, in the abutting direction, the pull rod assembly 51 is limited by the limit pin serving as the limit structure 11, so that the coupler knuckle block 3 cannot rotate continuously in the direction, and the engaging block 25 of the coupler knuckle 2 and the second hook portion 512 are located on the same side of the coupler knuckle block 3, so that the coupler knuckle 2 cannot rotate to a position where the lock pin bayonet 20 of the coupler knuckle 2 faces obliquely downward, and the hook lock state is maintained. Meanwhile, the detecting end 711 of the detecting member 71 is pressed into the lock case 1 by the ground or the door frame, and the unlocking lever 712 on the detecting member 71 is away from the shifting fork block 61, so that the shifting fork block 61 is reset to the locking position thereof by the first elastic resetting structure 62.

When the shift fork 4 is driven to rotate by the lock cylinder, the shift fork 4 pulls the second hook portion 512 of the pull rod assembly 51 through the shift block 42 to make the pull rod assembly 51 move transversely, and the first hook portion 511 of the pull rod assembly 51 pulls the upper end of the knuckle block 3 to make the knuckle block 3 rotate to a position where the knuckle block is disengaged from the knuckle 2, as shown in fig. 6 and 7. In the above process, the shifting fork locking block 41 of the shifting fork 4 can shift the shifting fork locking block 61 to enable the shifting fork locking block 61 to rotate towards the avoiding position direction, so that the shifting fork locking block 41 can cross the shifting fork locking block 61, after the shifting fork locking block 41 crosses the shifting fork locking block 61, the shifting fork locking block 61 is reset to the locking position under the action of the first elastic resetting structure 62, the shifting fork 4 is locked by the shifting fork locking block 61 in the return direction, so that the coupler knuckle locking block 3 is kept to be separated from the position clamped with the coupler knuckle 2, and the state can refer to fig. 8 at the moment. The shifting blocks 42 are provided with a pair of shifting blocks, so that a pair of pull rod assemblies 51 can be driven to move transversely at the same time, and the two knuckle blocks 3 on the two sides of the lock shell 1 can rotate to the positions where the knuckle blocks are separated from being clamped with the knuckle 2. The above process can also be realized by the electric unlocking mechanism 9, and the pull rod assembly 51 is driven to transversely move by the electric unlocking mechanism 9. In the embodiment, the electric unlocking mechanism 9 is provided with one pull rod assembly 51 and drives the other pull rod assembly 51 to move transversely, the other pull rod assembly 51 is linked with the one pull rod assembly 51 through the synchronizing gear 94 to realize synchronous motion, specifically, the two pull rod assemblies 51 are provided with the synchronizing gear rack 95, the synchronizing gear 94 is pivoted to the lock case 1, and the synchronizing gear racks 95 on the two pull rod assemblies 51 are arranged on two sides of the synchronizing gear 94 and meshed with the synchronizing gear 94.

After the shifting fork block 61 enters the position where the shifting fork block is separated from the latch of the latch 2, the latch 2 can rotate to the open position, the door is opened upwards, the lock pin 100 will be separated from the lock pin bayonet 20 of the latch 2, and the door can be freely opened upwards, as shown in fig. 9 to 11, after the door is opened upwards, at the moment, the latch 2 is reset to the open state through the fourth elastic reset structure 8, namely, the lock pin bayonet 20 of the latch 2 faces the position obliquely below. In the above process, the detecting end 711 of the detecting element 71 starts to be far away from the ground or the door frame, the detecting element 71 without support moves toward the outside of the lock case under the action of the second elastic reset structure 72, the unlocking rod 712 of the detecting element 71 will shift the shift fork block 61 to enter the avoidance position, the lock of the shift fork block 61 on the shift fork 4 is released, at this time, the lock cylinder drives the shift fork 4 to reversely rotate and return, the shift block 42 of the shift fork 4 moves in the direction far away from the second hook portion 512, and the knuckle block 3 is reset by the third elastic reset structure 52 and abuts against the knuckle 2 in the open state to wait for the next door closing, as shown in fig. 12 to 14.

After the door is opened and closed again, the coupler knuckle lock moves downwards, the lock pin 100 is vertically inserted into the lock pin bayonet 20 of the coupler knuckle 2, the lock pin 100 drives the coupler knuckle 2 to rotate to the coupler lock state, at the moment, the clamping block 25 of the coupler knuckle 2 shifts the coupler knuckle block 3 to move the coupler knuckle block 3 to the abdication position, after the clamping block 25 passes over the coupler knuckle block 3 and the coupler knuckle 2 returns to the coupler lock state, the coupler knuckle block 3 automatically resets to the clamping position with the coupler knuckle 2 in the third elastic resetting structure 52 to clamp the coupler knuckle 2, and the coupler knuckle lock returns to the locking state again, namely returns to the state from fig. 1 to fig. 3. In the above process, the detecting end 711 of the detecting element 71 is pressed into the lock case 1 by the ground or the door frame, the unlocking shift lever 712 of the detecting element 71 is far away from the shift fork block 61, and the shift fork block 61 is reset to the locking position under the action of the first elastic reset structure 62, so that the shift fork 4 is unidirectionally locked when the next lock cylinder drives the shift fork 4 to rotate.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A coupler latch lock, comprising:

a lock shell (1) with a lock shell inner cavity;

the coupler knuckle (2) is arranged in the inner cavity of the lock shell and is pivoted with the lock shell (1);

the coupler knuckle lock comprises a coupler knuckle block (3) which is arranged in an inner cavity of the lock shell and is pivoted to the lock shell (1), and when the coupler knuckle lock is in a locked state, the coupler knuckle block (3) is clamped above the coupler knuckle (2) to limit the rotation of the coupler knuckle (2).

2. A coupler latch lock according to claim 1, wherein: the lower end part of the coupler knuckle block (3) is provided with a pivoting part (31), and the coupler knuckle (2) is pivoted with the lock shell (1) through the pivoting part (31).

3. A coupler latch according to claim 1 or 2, wherein: the upper part of the coupler knuckle (2) is provided with a notch (21) matched with the shape of the lower end of the coupler knuckle (2), and when the coupler knuckle lock is in a locked state, the lower end of the coupler knuckle (2) is clamped in the notch (21).

4. A coupler latch lock according to claim 2, wherein: the locking and unlocking device is used for controlling the knuckle block (3) and comprises a shifting fork (4), a lock cylinder, a linkage mechanism (5) and a shifting fork anti-return locking mechanism (6); the shifting fork (4) is pivoted to the lock shell (1); the lock cylinder is arranged on the lock shell (1), and is connected with the shifting fork (4) and used for driving the shifting fork (4) to rotate forwards and backwards; the linkage mechanism (5) is arranged on the lock shell (1), and the shifting fork (4) is linked with the knuckle block (3) through the linkage mechanism (5) when rotating forwards and backwards so as to drive the knuckle block (3) to rotate to a position where the knuckle block (3) is clamped or separated from the knuckle block (2); the anti-return lock mechanism (6) of the shifting fork is arranged on the lock shell (1), the shifting fork (4) rotates to enable the knuckle block (3) to enter a position where the knuckle (2) is separated from clamping, and the anti-return lock mechanism (6) of the shifting fork limits the shifting fork (4) to rotate reversely.

5. A coupler latch lock according to claim 4, wherein: the shifting fork anti-return locking mechanism (6) comprises a shifting fork block (61) and a first elastic reset structure (62); a shifting fork locking block (41) is arranged on the shifting fork (4); the shifting fork block (61) is pivoted to the lock shell (1), the shifting fork block (61) is provided with a locking position and an avoiding position, when the shifting fork block (61) is located at the locking position, the shifting fork block (61) enters a rotating path of the shifting fork locking block (41), and when the shifting fork block (61) is located at the avoiding position, the shifting fork block (61) does not enter the rotating path of the shifting fork locking block (41); the first elastic reset structure (62) is arranged on the lock shell (1) and connected with the shifting fork block (61) to enable the shifting fork block (61) to have a tendency of moving to the locking position; when shift fork (4) forward rotation, shift fork locking piece (41) can be chosen shift fork locking piece (61) makes shift fork locking piece (61) rotate extremely avoid the position, so that shift fork locking piece (41) can cross shift fork locking piece (61), shift fork locking piece (41) are crossed behind shift fork locking piece (61) pass through first elasticity reset structure (62) reset extremely stop the locking position so that when shift fork (4) reverse rotation, shift fork locking piece (41) can the joint in shift fork locking piece (61), shift fork locking piece (41) in the joint department application of force in during shift fork locking piece (61), shift fork locking piece (61) have far away avoid the rotatory trend of position direction.

6. A coupler latch lock according to claim 5, wherein: the unlocking and locking device further comprises a shifting fork unlocking mechanism (7), and the shifting fork unlocking mechanism (7) is arranged on the lock shell (1) and used for releasing the locking of the shifting fork anti-return locking mechanism (6) on the shifting fork (4); shift fork release mechanism (7) are including detection piece (71) and second elasticity reset structure (72), detection piece (71) swing joint in lock shell (1) and can be relative lock shell (1) removes, detection piece (71) have test end (711) and unblock driving lever (712), second elasticity reset structure (72) set up in lock shell (1) and make test end (711) of detection piece (71) have stretch out in lock shell (1) outer trend test end (711) when stretching out outward toward lock shell (1), unblock driving lever (712) are stirred shift fork system piece (61) makes its entering avoid the position, test end (711) are toward behind the income in lock shell (1), unblock driving lever (712) are kept away from shift fork system piece (61).

7. A coupler latch lock according to claim 4, wherein: the linkage mechanism (5) comprises a pull rod assembly (51) and a third elastic reset structure (52), the pull rod assembly (51) is movably connected with the lock shell (1) and can transversely move relative to the lock shell (1), the third elastic reset structure (52) is arranged on the lock shell (1), the third elastic reset structure (52) is connected with the knuckle block (3) and enables the knuckle block (3) to have the trend of resetting to the position clamped with the knuckle (2), the shifting fork (4) is provided with a shifting block (42), two ends of the pull rod component (51) are respectively provided with a first hook part (511) and a second hook part (512), the first hook pulling part (511) is arranged corresponding to the upper end part of the knuckle block (3), the second hook pulling part (512) is arranged corresponding to the shifting block (42) of the shifting fork (4); when the shifting fork (4) rotates forwards, the shifting fork (4) shifts a second pull hook part (512) of the pull rod assembly (51) through the shifting block (42) to enable the pull rod assembly (51) to move transversely, and the first pull hook part (511) shifts the upper end part of the knuckle block (3) to enable the knuckle block (3) to rotate to a position where the knuckle block (2) is disengaged; when shift fork (4) counter rotation, shifting block (42) of shift fork (4) toward keeping away from the direction of second hook portion (512) removes so that knuckle dog (3) can pass through third elasticity reset structure (52) restore to the throne to with the position of knuckle (2) joint.

8. A coupler latch lock according to claim 7, wherein: the coupler knuckle (2) comprises a body part (22), an upper stop block (23) and a lower stop block (24), the upper stop block (23) and the lower stop block (24) are arranged on the same side of the body part (22), the upper stop block (23) and the lower stop block (24) enclose a lock pin bayonet (20), and the body part (22) is pivoted to the lock shell (1); a clamping block (25) is arranged at the upper part of the coupler knuckle (2), and a limiting structure (11) for limiting the coupler knuckle block (3) is arranged on the lock shell (1); the coupler knuckle (2) has a hook lock state in which the lock pin bayonet (20) faces in the lateral direction and an open state in which the lock pin bayonet (20) faces obliquely downward; coupler knuckle (2) is in the coupler lock state coupler knuckle system piece (3) be in with during the position of coupler knuckle (2) looks joint, joint piece (25) joint is in one side of coupler knuckle system piece (3) lower extreme, limit structure (11) are spacing in same one side the upper end of coupler knuckle system piece (3), so that coupler knuckle (2) toward by in the rotatory direction of open state coupler knuckle system piece (3) are spacing.

9. A coupler latch lock according to claim 8, wherein: a fourth elastic reset structure (8) is arranged on the lock shell (1), and the fourth elastic reset structure (8) is connected with the coupler knuckle (2) and enables the coupler knuckle (2) to have a tendency of resetting to the open state; when the knuckle block (3) is located at a position where the knuckle block is separated from being clamped with the knuckle (2), the fourth elastic reset structure (8) resets the knuckle (2) to the open state; coupler knuckle (2) is in open mode, just coupler knuckle system piece (3) quilt third elasticity reset structure (52) order about and toward with during the position motion of coupler knuckle (2) joint, coupler knuckle system piece (3) butt in coupler knuckle (2), joint piece (25) are located the downside of coupler knuckle system piece (3), when coupler knuckle (2) rotate toward the hook lock state, joint piece (25) can be stirred coupler knuckle system piece (3) make its toward with coupler knuckle (2) break away from the position rotation of joint, so that joint piece (25) can cross coupler knuckle system piece (3) and joint in one side of coupler knuckle system piece (3) lower extreme.

10. A coupler latch lock according to claim 7, wherein: the unlocking and locking device further comprises an electric unlocking mechanism (9), wherein the electric unlocking mechanism (9) comprises a driving motor (91), a reduction box (92) and a driving gear (93); the lock comprises a lock shell (1), a driving motor (91) and a reduction gearbox (92) are installed on the lock shell (1), the output end of the driving motor (91) is connected with the reduction gearbox (92), the driving gear (93) is pivoted to the lock shell (1), the output end of the reduction gearbox (92) is connected with the driving gear (93), a transversely arranged rack (513) is arranged on a pull rod assembly (51), and the driving gear (93) and the rack (513) are meshed and matched.

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