CN210948055U - Lock core and latch bolt assembly control structure of mortise door lock - Google Patents

Abstract

The utility model relates to a lock core and latch bolt component control structure of a mortise door lock, which comprises an inner lock core, an outer lock core and a locking transmission component; the end part of the inner lock cylinder is provided with an inner poking wheel, the end part of the outer lock cylinder is provided with an outer poking wheel, and the locking transmission assembly comprises a first locking piece, a first sliding block, a second locking piece, a first driving piece and a second driving piece; the inner poking wheel and the outer poking wheel are used for locking and unlocking the latch bolt assembly through the locking transmission assembly, so that a locking anti-theft function is realized, a square bolt assembly of a traditional mortise door lock is omitted, the mortise door lock structure is effectively simplified, the production cost is reduced, the assembling and mounting efficiency is improved, the market competitiveness of the mortise door lock is improved, and the mortise door lock is favorable for market development, popularization and application.

Description

Lock core and latch bolt assembly control structure of mortise door lock

Technical Field

The utility model belongs to the technical field of the tool to lock, in particular to lock core and oblique tongue subassembly control structure of lock pin lock.

Background

At present, the mortise door lock (such as a handle lock) on the market comprises an inner handle assembly, an outer handle assembly and a lock body, wherein an inclined bolt assembly, a square bolt assembly and a safety bolt assembly are arranged in the lock body, and the lock body is controlled to be opened and closed by different structures, and the mortise door lock specifically comprises the following steps: the latch bolt subassembly is controlled by interior handle subassembly and outer handle group and is opened, and the square bolt subassembly is by interior lock core of key control and outer lock core control shutting and unblock, and the insurance tongue subassembly is controlled by the insurance button, and it is very troublesome to use the operation, and the structure is very complicated moreover, and equipment installation cost is consuming time, and manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a can realize shutting theftproof function to the shutting and the unblock control of latch bolt subassembly, effectively simplify the lock core and the latch bolt subassembly control structure of insert core door lock structure, reduction in production cost, improvement equipment installation efficiency.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a lock core and latch bolt assembly control structure of a mortise door lock comprises an inner lock core, an outer lock core and a locking transmission assembly; wherein,

the inner lock cylinder and the outer lock cylinder are respectively arranged on an inner handle fixing seat of the inner handle assembly and an outer handle fixing seat of the outer handle assembly, an inner poking wheel is arranged at the end part of the inner lock cylinder, and an outer poking wheel is arranged at the end part of the outer lock cylinder;

the locking transmission component comprises a first locking piece, a first sliding block, a second locking piece, a first driving piece and a second driving piece; the first sliding block can slide upwards and is installed in the inner handle fixing seat in an automatic resetting manner, the first locking piece can swing towards the first sliding block direction and is installed in the inner handle fixing seat in an automatic resetting manner towards the direction of the inner handle transmission rod socket, and the second locking piece (43) can swing towards the opposite direction of the first sliding block and is installed in the inner handle fixing seat in an automatic resetting manner towards the direction of the first sliding block; the first locking piece is provided with a locking clamping part, the inner handle transmission rod socket is provided with a locking clamping position, the locking clamping part can be clamped in the locking clamping position in a sliding manner, and the second locking piece clamps a first sliding block which slides upwards to an unlocking state; the first driving piece and the second driving piece can be synchronously and rotatably arranged in the inner handle fixing seat and the outer handle fixing seat respectively, the first driving piece is in driving connection with the inner poking wheel of the inner lock cylinder and drives the first sliding block to slide upwards and the second locking piece to swing in the forward and reverse rotation processes respectively, and the second driving piece is in driving connection with the outer poking wheel of the outer lock cylinder; or the first sliding block can slide upwards and is installed in the outer handle fixing seat in an automatic resetting manner, the first locking piece can swing towards the first sliding block and is installed in the outer handle fixing seat in an automatic resetting manner towards the direction of the outer handle transmission rod socket, and the second locking piece can swing towards the opposite direction of the first sliding block and is installed in the outer handle fixing seat in an automatic resetting manner towards the direction of the first sliding block; the first locking piece is provided with a locking clamping part, the outer handle transmission rod socket is provided with a locking clamping position, the locking clamping part can be clamped in the locking clamping position in a sliding manner, and the second locking piece clamps a first sliding block which slides upwards to an unlocking state; but first driving piece and second driving piece install respectively in outer handle fixing base and interior handle fixing base with synchronous rotation, first driving piece is connected and drives first sliding block lapse and drive second locking piece swing respectively in forward and the antiport process with the outer drive wheel of stirring of outer lock core, the drive of the interior drive wheel of second driving piece and interior lock core is connected.

Furthermore, one side of the first sliding block, which faces the first locking piece and the second locking piece, is sequentially provided with a locking convex position, an unlocking concave position and a sliding locking position from top to bottom; when the inner poking wheel of the inner lock cylinder or the outer poking wheel of the outer lock cylinder drives the first sliding block to slide upwards through the first driving piece, the second locking piece automatically resets to be clamped on the sliding locking position, the first locking piece abuts against the locking convex position, the locking clamping part is locked and clamped in the locking clamping position of the inner handle transmission rod socket or the locking clamping position of the outer handle transmission rod socket, and the inner handle and the outer handle are locked; when the inner poking wheel of the inner lock cylinder or the outer poking wheel of the outer lock cylinder drives the second locking piece to swing through the first driving piece, the second locking piece is separated from the sliding locking position, at the moment, the first sliding block automatically slides downwards to reset to the unlocking concave position and faces the first locking piece, the locking of the locking clamping part is released, and the handle and the outer handle are unlocked.

Further, first driving piece and second driving piece are two drive shafts of the same axle center that rotationally set up perpendicularly on interior handle fixing base and the outer handle fixing base, moreover first driving piece week side surface is equipped with the first drive division of being connected with interior lock core drive, the second drive division of being connected with first sliding block drive and the third drive division of being connected with second locking piece drive, week side surface of second driving piece is equipped with the fourth drive division of being connected with outer lock core drive.

Furthermore, the first driving part is arranged at the upper end of the first driving part, the second driving part and the third driving part are arranged at the lower end of the first driving part, and the first driving part, the second driving part and the third driving part and the first driving part are in an integrated structure; the fourth driving part is arranged at the upper end of the second driving part and is of an integrated structure.

Furthermore, a first tooth position and a second tooth position are respectively arranged at the left lower end and the right upper end of the first driving part, an inner poking wheel is arranged at the end part of the inner lock cylinder, a third tooth position and a fourth tooth position are respectively arranged at the left upper end and the right lower end of the inner poking wheel, the third tooth position is meshed with the first tooth position when the first sliding block is driven to slide upwards, and the fourth tooth position is meshed with the second tooth position when the second locking piece is driven to swing;

the left lower extreme and the upper right end of fourth drive division are equipped with fifth tooth position and sixth tooth position respectively, the tip of outer lock core is equipped with outer thumb wheel, it is equipped with the seventh tooth position and eighth tooth position respectively to be equipped with the upper left end and the lower right end on the outer thumb wheel, when driving first sliding block upwards slip seventh tooth position and fifth tooth position meshing, when driving the swing of second locking piece eighth tooth position and sixth tooth position meshing.

The utility model has the advantages that:

the above technical scheme, the utility model, can realize shutting theftproof function to the shutting and the unblock control of oblique tongue subassembly, saved the square tongue subassembly of traditional lock pin lock simultaneously, effectively simplify the lock pin lock structure, reduction in production cost with improve equipment installation effectiveness to improve lock pin lock market competition, be favorable to market development, popularization and application.

Drawings

Fig. 1 is a schematic structural diagram of a mortise door lock adopting the control structure of the lock cylinder and latch bolt assembly of the present invention;

fig. 2 is an exploded schematic view of a mortise door lock adopting the control structure of the lock cylinder and latch bolt assembly of the present invention;

figure 3 is an exploded view of the inner handle assembly of figure 1;

FIG. 4 is an internal schematic view of the inner handle assembly of FIG. 1;

fig. 5 is a schematic structural diagram of a first sliding block in an embodiment of a control structure of a lock cylinder and latch bolt assembly according to the present invention;

fig. 6 is a schematic structural diagram of a first locking member in an embodiment of the control structure of the lock cylinder and latch bolt assembly according to the present invention;

fig. 7 is a schematic structural diagram of a first driving member in an embodiment of a control structure of a lock cylinder and latch bolt assembly according to the present invention;

FIG. 8 is a schematic structural view of an inner lock cylinder in an embodiment of a control structure of a lock cylinder and latch bolt assembly according to the present invention;

fig. 9 is a schematic structural view of an outer handle assembly in an embodiment of the control structure of the lock cylinder and latch bolt assembly of the present invention;

fig. 10 is a schematic structural view of an outer lock cylinder in an embodiment of the control structure of the lock cylinder and latch bolt assembly according to the present invention;

fig. 11 is a schematic structural diagram of a second driving member in an embodiment of a control structure of a lock cylinder and latch bolt assembly according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 11:

the embodiment of the utility model provides a lock pin lock, including interior handle subassembly 1, outer handle subassembly 2 and oblique tongue subassembly 3, interior handle subassembly 1 is including interior handle fixing base 11, the interior handle 12 and the interior lock core 13 on the interior handle fixing base 11 of installation, outer handle subassembly 2 is including outer handle fixing base 21, the outer handle 22 and the outer lock core 23 on the outer handle fixing base 21 of installation, moreover interior handle 12 and outer handle 22 are connected and are connected with oblique tongue subassembly 3 drive through wearing to establish the synchronous rotation of first transmission rod 6 (for example: square shaft) on oblique tongue subassembly 3.

In addition, the inner lock cylinder 13 and the outer lock cylinder 23 are in transmission connection with the inner handle 12 and the outer handle 22 in a locking and unlocking control mode, so that locking and unlocking of the mortise door lock are realized. The method specifically comprises the following steps: a locking transmission assembly 4 is arranged between the inner lock cylinder 13 and the outer lock cylinder 23 and between the inner handle 12 and the outer handle 22, and the locking transmission assembly 4 comprises a first locking piece 41, a first sliding block 42, a second locking piece 43, a first driving piece 44 and a second driving piece 45; the first sliding block 42 can slide upwards and is installed in the inner handle fixing seat 11 in an automatic resetting manner, as shown in fig. 3, a sliding installation seat 111 is arranged in the inner handle fixing seat 11, and the first sliding block 42 can be installed on the sliding installation seat 111 in an up-and-down sliding manner and is provided with a resetting tension spring 424; the first locking piece 41 can swing towards the first sliding block 42 and can be installed in the inner handle fixing seat 11 in a self-resetting manner towards the direction of the inner handle transmission rod socket 14, the second locking piece 43 can swing towards the direction opposite to the first sliding block 42 and can be installed in the inner handle fixing seat 11 in a self-resetting manner towards the direction of the first sliding block 42, as shown in fig. 3 and 4, the first locking piece 41 and the second locking piece 43 can be installed in the inner handle fixing seat 11 in a rotating manner through locking pieces (such as screws), and the first locking piece 41 and the second locking piece 43 are respectively provided with a first torsion spring 412 and a second torsion spring 431; moreover, the first locking member 41 is provided with a locking clamping portion 411, the inner lever handle transmission rod socket 14 is provided with a locking clamping portion 141, the locking clamping portion 411 can be clamped in the locking clamping portion 141 in a sliding manner, and the second locking member 43 clamps the first sliding block 42 which slides upwards to an unlocking state; the first driving piece 44 and the second driving piece 45 are installed in the inner handle fixing seat 11 and the outer handle fixing seat 21 in a synchronous rotating mode, the first driving piece 44 is in driving connection with the inner lock cylinder 13 and drives the first sliding block 42 to slide upwards and drive the second locking piece 43 to swing in the forward and reverse rotating processes, and the second driving piece 45 is in driving connection with the outer lock cylinder 23. As shown in fig. 5, a locking convex portion 421, an unlocking concave portion 422 and a sliding lock positioning portion 423 are sequentially arranged on one side of the first sliding block 42 facing the first locking member 41 and the second locking member 43 from top to bottom; as shown in fig. 1 and 2, the first driving member 44 and the second driving member 45 are two coaxial driving shafts rotatably and vertically disposed on the inner handle fixing base 11 and the outer handle fixing base 21, as shown in fig. 6, 7, 8, 10 and 11, the peripheral side surface of the first driving member 44 is provided with a first driving portion 441 in driving connection with the inner cylinder 13, a second driving portion 442 in driving connection with the first sliding block 42 and a third driving portion 443 in driving connection with the second locking member 43, the peripheral side surface of the second driving member 45 is provided with a fourth driving portion 451 in driving connection with the external cylinder 23, wherein the first driving part 441 is arranged at the upper end of the first driving piece 44, the left lower end and the right upper end of the first driving part 441 are respectively provided with a first tooth position 444 and a second tooth position 445, an inner poking wheel 131 is arranged at the end part of the inner lock cylinder 13, and a third tooth position 132 and a fourth tooth position 133 are respectively arranged at the upper left end and the lower right end of the inner poking wheel 131; the second driving portion 442 and the third driving portion 443 are disposed at the lower end of the first driving member 44, and the first driving portion 441, the second driving portion 442 and the third driving portion 443 are integrated with the first driving member 44; the fourth driving part 451 is arranged at the upper end of the second driving part 45, the left lower end and the right upper end of the fourth driving part 451 are respectively provided with a fifth tooth position 452 and a sixth tooth position 453, the end part of the outer lock cylinder 23 is provided with an outer dial wheel 231, the left upper end and the right lower end of the outer dial wheel 231 are respectively provided with a seventh tooth position 232 and an eighth tooth position 233, and the fourth driving part 451 and the second driving part 45 are integrated; and the end surfaces of the first driving member 44 and the second driving member 45 are respectively provided with a second transmission rod 446 and an insertion hole 454, the second transmission rod 446 and the first driving member 44 are of an integrated structure, and the second transmission rod 446 is inserted and clamped in the insertion hole 454 during assembly, as shown in fig. 1.

The lock core and the latch bolt subassembly control structure theory of operation of lock pin lock do: when a user operates the inner lock cylinder 13 or the outer lock cylinder 23 by a key, so that the inner lock cylinder 13 drives the first sliding block 42 to slide upwards through the first driving piece 44 or the outer lock cylinder 23 sequentially drives the first sliding block 42 to slide upwards through the second driving piece 45 and the first driving piece 44 (in this process, the third tooth position 132 of the inner lock cylinder 13 is meshed with the first tooth position 444 of the first driving piece 44, or the seventh tooth position 232 of the outer lock cylinder 23 is meshed with the fifth tooth position 452 of the second driving piece 45), the second locking piece 43 automatically resets to be clamped on the sliding lock positioning 423, the first locking piece 41 abuts on the locking convex position 421, so that the locking clamping part 411 is locked and clamped in the locking clamping position 141, and the inner handle 12 and the outer handle 22 are locked and cannot rotate, thereby locking the mortise door lock is realized; when a user operates the inner lock cylinder 13 or the outer lock cylinder 23 by a key, the inner lock cylinder 13 drives the second locking piece 43 to swing through the first driving piece 44 or the outer lock cylinder 23 sequentially drives the second locking piece 43 to swing through the second driving piece 45 and the first driving piece 44 (in this process, the fourth tooth 133 of the inner lock cylinder 13 is engaged with the second tooth 445 of the first driving piece 44 or the eighth tooth 233 of the outer lock cylinder 23 is engaged with the sixth tooth 453 of the second driving piece 45), the second locking piece 43 is separated from the sliding lock positioning 423, at this time, the first sliding block 42 automatically slides downwards to be reset to the unlocking concave 422 to face the first locking piece 41, the locking clamp part 411 is unlocked, the inner handle 12 and the outer handle 22 are unlocked, and the mortise lock is unlocked.

Therefore, through the lock core and the oblique tongue subassembly control structure of lock pin lock can realize the shutting and the unblock control of oblique tongue subassembly, possess shutting theftproof function, saved the square tongue subassembly of traditional lock pin lock simultaneously, the structure is obviously simplified, both greatly reduced manufacturing cost, improved the equipment installation effectiveness again, market competition is high, is favorable to market development, popularization and application.

Of course, the first sliding block 42 of the lock transmission assembly 4 of the present invention may also be installed in the outer handle fixing seat 21 in an upward sliding and automatic resetting manner, the first locking member 41 may be installed in the outer handle fixing seat 21 in an automatic resetting manner toward the first sliding block 42 direction and toward the outer handle transmission rod socket 24 direction, the second locking member 43 may be installed in the outer handle fixing seat 21 in an automatic resetting manner toward the first sliding block 42 direction and toward the second sliding block 42 direction and toward the first sliding block 42 direction, and the first locking member 41 is provided with the lock locking portion 411, the inner handle transmission rod socket 14 is provided with the lock detent 141, the lock locking portion 411 may be slidably locked in the lock detent 141, and the second locking member 43 is locked to the first sliding block 42 which slides upward to the unlock state; the first driving piece 44 and the second driving piece 45 are installed in the outer handle fixing seat 21 and the inner handle fixing seat 11 in a synchronous rotating mode, the first driving piece 44 is in driving connection with the inner lock cylinder 13 and drives the first sliding block 42 to slide upwards and the second locking piece 43 to swing in the forward and reverse rotating processes, and the second driving piece 45 is in driving connection with the outer lock cylinder 23. When the outer lock cylinder 23 drives the first sliding block 42 to slide upwards through the first driving piece 44 or the inner lock cylinder 13 sequentially drives the first sliding block 42 to slide upwards through the second driving piece 45 and the first driving piece 44, the second locking piece 43 automatically resets to be clamped on the sliding lock positioning 423, the first locking piece 41 abuts against the locking convex position 421, so that the locking clamping part 411 is locked and clamped in the locking clamping position 141, and the inner handle 12 and the outer handle 22 are locked; when the outer lock cylinder 23 drives the second locking piece 43 to swing through the first driving piece 44 or the inner lock cylinder 13 sequentially drives the second locking piece 43 to swing through the second driving piece 45 and the first driving piece 44, the second locking piece 43 is separated from the sliding lock positioning 423, at this time, the first sliding block 42 automatically slides downwards to be reset to the unlocking concave position 422 which is opposite to the first locking piece 41, the locking of the locking clamping part 411 is released, and the inner handle 12 and the outer handle 22 are unlocked. Therefore, the locking anti-theft function can be realized, the structure is simple, and the assembly and the installation are convenient and quick.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (5)

1. The utility model provides a lock core and oblique tongue subassembly control structure of lock pin lock which characterized in that: comprises an inner lock cylinder (13), an outer lock cylinder (23) and a locking transmission component (4); wherein,

the inner lock cylinder (13) and the outer lock cylinder (23) are respectively installed on an inner handle fixing seat (11) of the inner handle assembly (1) and an outer handle fixing seat (21) of the outer handle assembly (2), an inner poking wheel (131) is arranged at the end part of the inner lock cylinder (13), and an outer poking wheel (231) is arranged at the end part of the outer lock cylinder (23);

the locking transmission component (4) comprises a first locking piece (41), a first sliding block (42), a second locking piece (43), a first driving piece (44) and a second driving piece (45); the first sliding block (42) can slide upwards and is installed in the inner handle fixing seat (11) in an automatic resetting mode, the first locking piece (41) can swing towards the first sliding block (42) and is installed in the inner handle fixing seat (11) in an automatic resetting mode towards the direction of the inner handle transmission rod socket (14), and the second locking piece (43) can swing towards the opposite direction of the first sliding block (42) and is installed in the inner handle fixing seat (11) in an automatic resetting mode towards the direction of the first sliding block (42); a locking clamping part (411) is arranged on the first locking part (41), a locking clamping position (141) is arranged on the inner handle transmission rod socket (14), the locking clamping part (411) can be clamped in the locking clamping position (141) in a sliding way, and the second locking part (43) clamps a first sliding block (42) which slides upwards to an unlocking state; the first driving piece (44) and the second driving piece (45) are synchronously and rotatably installed in the inner handle fixing seat (11) and the outer handle fixing seat (21) respectively, the first driving piece (44) is in driving connection with an inner poking wheel (131) of the inner lock cylinder (13) and drives a first sliding block (42) to slide upwards and a second locking piece (43) to swing respectively in forward and reverse rotating processes, and the second driving piece (45) is in driving connection with an outer poking wheel (231) of the outer lock cylinder (23); or the first sliding block (42) can slide upwards and is installed in the outer handle fixing seat (21) in an automatic reset mode, the first locking piece (41) can swing towards the first sliding block (42) and is installed in the outer handle fixing seat (21) in an automatic reset mode towards the direction of the outer handle transmission rod socket, and the second locking piece (43) can swing towards the opposite direction of the first sliding block (42) and is installed in the outer handle fixing seat (21) in an automatic reset mode towards the direction of the first sliding block (42); a locking clamping part (411) is arranged on the first locking part (41), a locking clamping position is arranged on the outer handle transmission rod socket, the locking clamping part (411) can be clamped in the locking clamping position in a sliding manner, and the second locking part (43) clamps a first sliding block (42) which slides upwards to an unlocking state; but first driving piece (44) and second driving piece (45) synchronous rotation ground install respectively in outer handle fixing base (21) and interior handle fixing base (11), first driving piece (44) are connected and drive first sliding block (42) lapse and drive second locking piece (43) swing respectively with the outer thumb wheel (231) drive of outer lock core (23) in forward and reverse rotation process, second driving piece (45) are connected with interior thumb wheel (131) drive of interior lock core (13).

2. The lock cylinder and latch bolt assembly control structure of the mortise lock according to claim 1, characterized in that: one side of the first sliding block (42) facing the first locking piece (41) and the second locking piece (43) is sequentially provided with a locking convex position (421), an unlocking concave position (422) and a sliding lock positioning position (423) from top to bottom; when an inner poking wheel (131) of the inner lock cylinder (13) or an outer poking wheel (231) of the outer lock cylinder (23) drives a first sliding block (42) to slide upwards through a first driving piece (44), the second locking piece (43) automatically resets to be clamped on a sliding locking position (423), the first locking piece (41) abuts against a locking convex position (421), so that the locking clamping part (411) is locked and clamped in a locking clamping position (141) of the inner handle transmission rod socket (14) or a locking clamping position of the outer handle transmission rod socket, and the inner handle (12) and the outer handle (22) are locked; when interior thumb wheel (131) of interior lock core (13) or outer thumb wheel (231) of outer lock core (23) swung through first driving piece (44) drive second locking piece (43), second locking piece (43) break away from slip lock location (423), at this moment first sliding block (42) automatic downward slip reset to unblock concave position (422) and just face first locking piece (41), it is right to remove locking card portion (411) lock is died, handle (12) and outer handle (22) in the unblock.

3. The lock cylinder and latch bolt assembly control structure of the mortise lock according to claim 1 or 2, characterized in that: first driving piece (44) and second driving piece (45) are two drive shafts of the same axle center that rotationally set up perpendicularly on interior handle fixing base (11) and outer handle fixing base (21), moreover first driving piece (44) week side surface is equipped with first drive division (441) with interior lock core (13) drive connection, second drive division (442) with first sliding block (42) drive connection and third drive division (443) with second locking piece (43) drive connection, week side surface of second driving piece (45) is equipped with fourth drive division (451) with outer lock core (23) drive connection.

4. The lock cylinder and latch bolt assembly control structure of the mortise lock according to claim 3, characterized in that: the first driving part (441) is arranged at the upper end of the first driving part (44), the second driving part (442) and the third driving part (443) are arranged at the lower end of the first driving part (44), and the first driving part (441), the second driving part (442) and the third driving part (443) and the first driving part (44) are of an integrated structure; the fourth driving part (451) is arranged at the upper end of the second driving part (45) and is of an integrated structure.

5. The lock cylinder and latch bolt assembly control structure of the mortise lock according to claim 4, wherein: the left lower end and the right upper end of the first driving part (441) are respectively provided with a first tooth position (444) and a second tooth position (445), the end part of the inner lock cylinder (13) is provided with an inner poking wheel (131), the upper left end and the lower right end of the inner poking wheel (131) are respectively provided with a third tooth position (132) and a fourth tooth position (133), the third tooth position (132) is meshed with the first tooth position (444) when the first sliding block (42) is driven to slide upwards, and the fourth tooth position (133) is meshed with the second tooth position (445) when the second locking piece (43) is driven to swing;

the left lower end and the right upper end of the fourth driving part (451) are respectively provided with a fifth tooth position (452) and a sixth tooth position (453), the end part of the outer lock cylinder (23) is provided with an outer poking wheel (231), the upper left end and the lower right end of the outer poking wheel (231) are respectively provided with a seventh tooth position (232) and an eighth tooth position (233), the seventh tooth position (232) is meshed with the fifth tooth position (452) when the first sliding block (42) is driven to slide upwards, and the eighth tooth position (233) is meshed with the sixth tooth position (453) when the second locking piece (43) is driven to swing.

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