CN211058490U

CN211058490U - Electromechanical lock convenient for switching bolt driving mode

Info

Publication number: CN211058490U
Application number: CN201921421041.2U
Authority: CN
Inventors: 陈思祖
Original assignee: Jinhua Bohonghui Intelligent Technology Co ltd
Current assignee: Shenzhen Hobere Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-07-21
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses an electromechanical lock which is convenient for switching the driving mode of a lock tongue, comprising a clutch component, a driving component and a lock tongue; the clutch component is connected with the lock tongue and comprises a clutch plate, a main lock shifting plate and an oblique tongue shifting plate, and the movement of the clutch plate can drive the main lock shifting plate and the oblique tongue shifting plate to move; the driving assembly comprises a motor, a screw rod and a shifting block movably sleeved on the screw rod, and a main lock shifting plate and an inclined tongue shifting plate can be selectively connected with the shifting block; the clutch plate can make the main lock shifting plate and the latch bolt shifting plate separate from the shifting block and shift the latch bolt. The core of the integrated clutch component is formed by a clutch plate, a main lock shifting plate and a latch bolt shifting plate; when the mechanical unlocking is switched, the main lock shifting plate and the latch bolt shifting plate can be disconnected with the shifting block and the lock is opened and closed at the same time only by shifting the clutch plate; compared with the traditional clutch with a complex structure, the clutch process is easier to realize, the clutch time can be shortened, and the clutch efficiency is improved.

Description

Electromechanical lock convenient for switching bolt driving mode

Technical Field

The utility model belongs to the technical field of the tool to lock structure technique and specifically relates to indicate an electromechanical lock convenient to switch spring bolt drive mode.

Background

In daily life, door locks are important barriers for guaranteeing property and privacy safety. With the development of society, the requirements of door locks on safety and convenience are increasing day by day. The door lock generally has two opening modes, namely an electric unlocking mode; a mechanical unlocking mode. The electric unlocking mode mainly comprises an electronic lock head, a magnetic card, a TM card (button key), an ID induction card, a wireless remote control, a computer door lock control system, a fingerprint, a biological identification technology that a clutch is usually arranged between the lock part and the electric unlocking part and then an eye mask is connected with an unlocking gear, and the like. The mechanical unlocking mode is that a mechanical key matched with the anti-theft lock head is inserted into the exposed or hidden anti-theft lock head to unlock the lockset. The mechanical opening mode can be used in case of electrical failure or emergency special condition.

In the prior art, an electromechanical lock capable of integrating electrical unlocking and mechanical unlocking has too many clutch parts and a complex structure; the result is when switching two kinds of drive methods of electrical unlocking and mechanical unlocking, and the cooperation that need pass through a plurality of spare parts just can accomplish, and the time of waiting is overlength, can not fast separation and reunion, in the use, still has very big inconvenience.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides an electromechanical lock convenient to switch spring bolt drive mode, and its structure sets up rationally, through setting up the separation and reunion structure of improvement, can realize the effect of quick separation and reunion when switching electric unblanking and mechanical two kinds of drive mode of unblanking, and convenient to use improves separation and reunion efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electromechanical lock convenient for switching a lock tongue driving mode comprises a clutch assembly, a driving assembly and a lock tongue; the clutch assembly is connected with the lock tongue and comprises a clutch plate, a main lock shifting plate and an oblique tongue shifting plate, and the clutch plate can drive the main lock shifting plate and the oblique tongue shifting plate to move when moving; the driving assembly comprises a motor, a screw rod and a shifting block movably sleeved on the screw rod, and the main lock shifting plate and the latch shifting plate can be selectively connected with the shifting block; the clutch plate can enable the main lock shifting plate and the latch bolt shifting plate to be disconnected with the shifting block and shift the latch bolt.

As a preferred embodiment: the main lock dialing plate is provided with a first gap, the latch bolt dialing plate is provided with a second gap, and the width of the first gap is larger than that of the second gap; the shifting block can selectively extend into the first gap and the second gap;

the motor is connected with the screw rod through a reduction gearbox, and the reduction gearbox is provided with an input end and an output end; the motor is connected to the input end, lead screw one end is connected in the output perpendicularly.

As a preferred embodiment: also comprises

The lock shell is internally provided with an assembly space and at least provided with a main lock hole and an inclined tongue hole;

a main lock assembly installed in the assembly space; the main lock assembly comprises a first moving member, at least one main lock bolt and a connecting plate, wherein the moving member moves the main lock bolt to extend out of a main lock hole to close the lock or retract to open the lock;

the latch bolt component can move on the first moving part; the oblique tongue component comprises a second moving part and an oblique tongue, and the oblique tongue extends out of the oblique tongue hole to close the lock or retracts to open the lock through the movement of the second moving part or the movement of the first moving part.

As a preferred embodiment: the clutch plate is movably arranged on the connecting plate, and the main lock shifting plate and the latch bolt shifting plate can be sequentially and movably stacked on the clutch plate.

As a preferred embodiment: the lock also comprises a lock core, the lock core is provided with a shifting fork, and the shifting fork can enable the main lock shifting plate and the latch bolt shifting plate to be disconnected with the shifting block and simultaneously shift the main lock bolt, the latch bolt or only the latch bolt;

the clutch assembly also comprises a swing arm which is rotatably arranged on the connecting plate; one end of the swing arm is connected with the clutch plate, the other end of the swing arm is connected with the main lock shifting plate, and the clutch plate moves to enable the swing arm to swing so as to drive the main lock shifting plate and the latch bolt shifting plate to be disconnected with the shifting block;

the connecting plate is provided with a concave position for shifting the shifting fork and an elastic block for preventing the shifting fork from being clamped on the connecting plate; the elastic block is movably arranged on the connecting plate, and the tail end of the elastic block extends into the concave position;

the main lock assembly is also provided with a movable connecting rod, and the connecting rod is provided with a limited end, a first stirring end and a second stirring end;

the second moving part is provided with a limited end, and the limited end can be selectively limited in the limited position;

the latch bolt shifting plate is provided with a first shifting part which can be selectively connected with a first shifting end; the shifting fork can be selectively connected with the second shifting end.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme: by improving the clutch assembly, the core of the integrated clutch assembly is formed by a clutch plate, a main lock shifting plate and a latch bolt shifting plate; when the electric switch lock is used, the shifting block can be used for directly shifting the switch lock completed by the movement of the main lock shifting plate and the latch bolt shifting plate; or when the mechanical switch lock is used, the clutch plate is directly shifted to ensure that the main lock shifting plate and the latch bolt shifting plate are disconnected with the shifting block and the switch lock is completed at the same time; therefore, when the mechanical switch lock is switched, the main lock shifting plate and the latch bolt shifting plate can be simultaneously disconnected with the shifting block only by shifting the clutch plate; compared with the traditional clutch with a complex structure, the clutch process is easier to realize, the clutch time can be shortened, the clutch efficiency is improved, and the lock integrating the electric and mechanical switch locks is more convenient to use; the improved clutch assembly has the advantages of few parts, simpler structure and convenient assembly.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic view of an electromechanical lock according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of an internal structure of an electromechanical lock according to a preferred embodiment of the present invention.

Fig. 3 is a front view of the main lock assembly and the latch member of the preferred embodiment of the present invention.

Fig. 4 is a schematic perspective view of a clutch assembly according to a preferred embodiment of the present invention.

Fig. 5 is another angular schematic of fig. 4.

Fig. 6 is an exploded view of fig. 4.

Fig. 7 is a schematic diagram of a clutch assembly and a driving assembly according to a preferred embodiment of the present invention.

Fig. 8 is a schematic structural diagram of the main bolt assembly, the latch bolt assembly and the lock cylinder according to the preferred embodiment of the present invention.

Fig. 9 is a schematic diagram of the driving assembly shifting clutch assembly according to the preferred embodiment of the present invention.

Fig. 10 is a schematic view of the lock cylinder shifting clutch assembly of the preferred embodiment of the present invention being disengaged from the driving assembly.

The attached drawings indicate the following:

10. lock shell 11 and bottom shell

12. Face shell 13, lock panel

131. Main lock hole 132, oblique tongue hole

14. Assembly space 20, primary lock assembly

21. First moving part 211, window

22. Main bolt 221 and middle bolt set

222. Upper end bolt group 223 and lower end bolt group

23. Connection plate 231, concave position

232. Bullet 2321, sixth cylinder

233. First column 234, second column

235. Third cylinder 236, eighth hole

24. Connecting rod 241, constrained end

242. A first toggle end 243 and a second toggle end

30. Latch bolt assembly 31 and second moving part

311. Limited 32, oblique tongue

40. Clutch assembly 41 and clutch plate

411. First hole 42, main lock dial plate

422. Second hole 423 and third hole

424. Fourth hole 425 and fifth hole

426. Fifth column 43, inclined tongue pulling plate

431. Second gap 432 and first toggle part

433. Sixth hole 434, seventh hole

44. Swing arm 441, circular hole

442. Fourth cylinder 50, drive assembly

51. Motor 52 and screw rod

53. Shifting block 60 and lock cylinder

61. Shifting fork 70 and inductive switch

71. First sensing point 72 and second sensing point

80. Control unit 90, world pole

100. A torsion spring.

Detailed Description

Please refer to fig. 1 to 10, which show the specific structure of the preferred embodiment of the present invention, which is an electromechanical lock for conveniently switching the driving mode of the lock tongue, and mainly utilizes the clutch structure to realize the fast clutch of the electric switch lock and the mechanical switch lock, so as to improve the clutch efficiency and make the lock using the clutch structure more convenient; in this context, an electromechanical lock is described as an example.

The electromechanical lock comprises a lock housing 10, a main lock assembly 20, a latch assembly 30, a clutch assembly 40, a drive assembly 50 and a lock cylinder 60.

The lock case comprises a bottom shell 11, a face shell 12 and a lock panel 13, the bottom shell 11, the face shell 12 and the lock panel 13 surround to form an assembly space 14, and the lock panel 13 is at least provided with a main lock hole 131 and a latch hole 132. In the present embodiment, the main lock assembly 20 is mounted to the fitting space 14; the main lock assembly 20 comprises a first moving member 21, at least one main bolt 22 and a connecting plate 23, wherein the moving member 21 moves the main bolt 22 to extend out of the main lock hole 131 for locking or retract back for unlocking; the main bolt 22 includes a middle bolt group 221, an upper bolt group 222 and a lower bolt group 223, and the middle bolt group 221, the upper bolt group 222 and the lower bolt group 223 are integrally formed on the side surface of the first moving member 21. The safety factor of the electromechanical lock can be enhanced by the three sets of lock tongues; and integrated into one piece locates first moving member 21, and, by first moving member 21 removal, can make spring bolt 22 stretch out or retract more steadily, stability is good. The connecting plate 23 is provided with a concave position 231 for shifting the shifting fork 61 and an elastic block 232 for preventing the shifting fork 61 from being clamped on the connecting plate 23; the elastic block 232 is movably arranged on the connecting plate 23, and the tail end of the elastic block 232 extends into the concave position 231. And, a top and bottom rod 90 is provided at both ends of the first moving member.

The latch bolt assembly 30 is movably arranged on the first moving part 21; the latch bolt assembly 30 comprises a second moving member 31 and a latch bolt 32, wherein the latch bolt 32 is moved by the second moving member 31 or the first moving member 21 to extend out of the latch bolt hole 132 to close the lock or retract to open the lock. In this embodiment, the first moving member 21 has a window 211, the window 211 is located between the middle latch tongue set 221 and the upper latch tongue set 222, and the second moving member 31 is movably disposed in the window 211. The bolt assembly 30 is arranged on the main lock assembly 20, so that the synchronous extension or retraction of the main bolt 22 and the bolt 23 can be realized; compared with the prior electromechanical lock which can not synchronously extend or retract the main bolt 22 and the latch bolt 23, the time control of the locking and unlocking can be made shorter, and the working efficiency of the locking and unlocking is improved; the user can reduce the time of waiting for opening and closing the lock when using, and the use is convenient.

The clutch assembly 40 is arranged on the connecting plate 23; the clutch assembly 40 comprises a clutch plate 41, a main lock dialing plate 42 and a latch dialing plate 43, wherein the clutch plate 41 can drive the main lock dialing plate 42 and the latch dialing plate 43 to move. In this embodiment, the clutch plate 41 is movably mounted to the connecting plate 23, and the main latch dial 42 and the latch dial 43 are sequentially movably stacked on the clutch plate 41. The clutch assembly 40 further comprises a swing arm 44, and the swing arm 44 is rotatably mounted on the connecting plate 23; one end of the swing arm 44 is connected with the clutch plate 41, the other end is connected with the main lock dialing plate 42, and the clutch plate 41 moves to enable the swing arm 44 to swing so as to drive the main lock dialing plate 42 and the latch bolt dialing plate 43 to be disconnected with the dialing block 53.

Referring to fig. 4, 5 and 6, in the present embodiment, the connecting plate 23 is provided with a first column 233, a second column 234 and a third column 235; the clutch plate 41 is provided with a first hole 411, and the clutch plate 41 is movably arranged on the connecting plate 23 through the first hole 411 and the first column 233. The main lock dialing plate 42 is provided with a plurality of second holes 422, the number of the second columns 234 of the connecting plate 23 is the same as that of the second holes 422, and the second holes 422 and the second columns 234 correspond to each other one by one, and the main lock dialing plate 42 is movably assembled on the connecting plate 23 through the second holes 422 and the second columns 234; and, the main striking plate 42 is further provided with a third hole 423, a fourth hole 424 and a fifth hole 425, the third hole 423 corresponding to the first hole 411, and the first cylinder 233 can be extended to the front of the third hole 423. The swing arm 44 has a circular hole 441 at the center, and the swing arm 44 is swingably mounted in the third cylinder 235 through the circular hole 441; the end of the swing arm 44 connected to the main striking plate 42 is provided with a fourth cylinder 442, the fourth cylinder 442 is inserted into the fifth hole 425, and the third cylinder 235 is confined in the fourth hole 424. The latch pulling plate 43 is provided with a sixth hole 433 and a seventh hole 434, and the seventh hole 434 is an arc-shaped guide hole; main deadbolt dialing plate 42 has two fifth posts 426 with sixth aperture 433 and seventh aperture 434 being confined within respective fifth posts 426. The bullet block 232 is provided with a sixth cylinder 2321, an eighth hole 236 is formed on the connecting plate 23, and the bullet block 232 is movably assembled to the connecting plate 23 through the sixth cylinder 2321 and the eighth hole 236. Further, a torsion spring 100 is provided between the spring block 232 and the connecting plate 23 and between the main lock dial plate 42 and the clutch plate 41, and elastic potential energy is provided by the torsion spring 100 to provide an elastic force therebetween.

The driving assembly 50 includes a motor 51, a lead screw 52 and a shifting block 53 movably sleeved on the lead screw 52, and the main lock shifting plate 42 and the latch shifting plate 43 can be selectively connected with the shifting block 53. Specifically, the main latch pulling plate 42 has a first notch 421, the latch pulling plate 43 has a second notch 431, and the width of the first notch 421 is greater than that of the second notch 431; the shifting block 53 can selectively extend into the first notch 421 and the second notch 431. Because the width of the first notch 421 is greater than that of the second notch 431, when the shifting block 53 moves to abut against the same side face of the first notch 421 and the second notch 431, the main lock shifting plate 42 and the latch shifting plate 43 can be shifted simultaneously; or the moving block 53 moves to abut against the second gap 431 and only moves the latch poking plate 43 when not abutting against the first gap 421. For example, if the shifting block 53 moves by one centimeter until the latch plate 43 is shifted to eject the latch 32, only the latch 32 is shifted each time, and only the shifting block 53 moves by one centimeter to shift the latch plate 43, but not the main latch plate 42. The motor 51 is connected with the screw rod 52 through a reduction gearbox 54, and the reduction gearbox 54 is provided with an input end and an output end; the motor 51 is connected to the input end, and one end of the screw rod 52 is vertically connected to the output end.

Illustratively, as shown in FIG. 3, the main lock assembly 20 is further provided with a movable connecting rod 24, the connecting rod 24 having a restricted end 241, a first dial end 242 and a second dial end 243. The second moving member 31 has a restricted portion 311, and the restricted end 241 can be selectively restricted in the restricted portion 311. The latch pulling plate 43 has a first pulling portion 432, and the first pulling portion 432 is selectively connected to the first pulling end 242; the shifting fork 61 can be selectively connected with the second shifting end 243; when the latch bolt dialing plate 43 dials the first dialing end 242 or the shifting fork 61 dials the second dialing end 243, the connecting rod 24 can move, and then the limited end 242 is separated from the limited position 311, and the second moving member 31 moves to extend the latch bolt 32. Here, it should be noted that a torsion spring 100 is also installed beside the second moving member 31, and the second moving member 31 can be moved by the elastic potential energy of the torsion spring 100.

The lock core 60 has a shift fork 61, and when the shift fork 61 is shifted, both the main lock shifting plate 42 and the latch bolt shifting plate 43 can be disconnected from the shifting block 53, and simultaneously shift the main lock bolt 22, the latch bolt 32 or only the latch bolt 32. In the present embodiment, the key cylinder 60 is disposed on the left side of the clutch assembly 40, and the driving assembly 50 is disposed on the right side of the clutch assembly 40.

Further comprises an inductive switch 70 and a control unit 80, wherein the inductive switch 70 is arranged in the assembly space 14 and is positioned beside the screw rod 52; the inductive switch 70 has a first inductive point 71 and a second inductive point 72; the control unit comprises a control circuit board and a chip arranged on the control circuit board. The control unit 80 is respectively connected to the inductive switch 70 and the motor 51 to control the operating states of the corresponding components.

Detailed description the working principle of the utility model is as follows: the electromechanical lock has two working modes; the first is an electric switch lock, which is powered by the driving assembly 50; the second is a mechanical switch lock, which is a mode of manually shifting a lock core; it is explained here that in the normal state of the electromechanical lock, both the main bolt and the latch bolt are retracted into the corresponding lock holes.

Referring to fig. 7 and 9, in a first mode, firstly, the motor 51 of the driving assembly 50 works to rotate the screw rod 52, the shifting block 53 moves along with the rotation of the screw rod 52 and shifts the latch lifting plate 43, and the latch lifting plate 43 shifts the connecting rod 24 to be separated from the second moving member 31, so that the latch 32 is ejected; then, after the movable door is closed, the shifting block 53 continues to move to shift the main lock shifting plate 42 so as to drive the first movable 21 to move and extend out of the main lock tongue 22, the shifting block 53 stops moving after moving to the second induction point 72 to complete locking, and at this time, the main lock tongue 22 is in a completely extended state; finally, the motor rotates reversely to drive the shifting block 53 to move back, so as to drive the main bolt 22 and the latch bolt 32 to retract simultaneously to complete unlocking, and the shifting block 53 stops moving after moving to the first sensing point 71.

Referring to fig. 8 and 10, in the second mode, first, the shifting fork 61 is reversely pressed against the clutch plate 41 and is moved to simultaneously disengage the main lock shifting plate 42 and the latch shifting plate 43 from the block 53; then, the shifting fork 61 is further shifted to enable the connecting plate 23 to simultaneously extend out of the main bolt 22 and the latch bolt 32 to close the lock; the forward rotation fork 61 can simultaneously pull the link plate 23 while retracting the main bolt 22 and the latch bolt 32 to unlock. Of course, when both the main bolt 22 and the latch tongue 32 are retracted, the forward rotation fork 61 can also be used to pull only the latch tongue 32 to eject.

The utility model discloses a design focus lies in: by improving the clutch assembly 40, the clutch plate 41, the main lock dialing plate 42 and the latch dialing plate 43 form the core of the integrated clutch assembly 40; when the electric switch lock is used, the shifting block 53 can be utilized to directly shift the switch lock completed by the movement of the main lock shifting plate 42 and the latch bolt shifting plate 43; or when the mechanical switch lock is used, the clutch plate 41 is directly shifted to disconnect the main lock shifting plate 42 and the latch shifting plate 43 from the shifting block 53 and complete the switch lock; therefore, when switching to the mechanical switch lock, the main lock dialing plate 42 and the latch dialing plate 43 can be disconnected with the dialing block 53 at the same time only by dialing the clutch plate 41; compared with the traditional clutch with a complex structure, the clutch process is easier to realize, the clutch time can be shortened, the clutch efficiency is improved, and the lock integrating the electric and mechanical switch locks is more convenient to use; the improved clutch assembly 40 has fewer parts, simpler structure and convenient assembly.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an electromechanical lock convenient to switch spring bolt drive mode which characterized in that: comprises a clutch component (40), a driving component (50) and a bolt; the clutch assembly (40) is connected with the lock tongue, the clutch assembly (40) comprises a clutch plate (41), a main lock dialing plate (42) and an oblique tongue dialing plate (43), and the clutch plate (41) can move to drive the main lock dialing plate (42) and the oblique tongue dialing plate (43) to move; the driving assembly (50) comprises a motor (51), a screw rod (52) and a shifting block (53) movably sleeved on the screw rod (52), and the main lock shifting plate (42) and the latch shifting plate (43) can be selectively connected with the shifting block (53); the clutch plate (41) can enable the main lock shifting plate (42) and the latch bolt shifting plate (43) to be disconnected with the shifting block (53) and shift the latch bolt.

2. The electromechanical lock of claim 1, wherein the locking bolt is actuated by a spring force of the spring, the spring force being applied to the locking bolt: the main lock dialing plate (42) is provided with a first notch (421), the latch dialing plate (43) is provided with a second notch (431), and the width of the first notch (421) is larger than that of the second notch (431); the shifting block (53) can selectively extend into the first gap (421) and the second gap (431);

the motor (51) is connected with the screw rod (52) through a reduction gearbox (54), and the reduction gearbox (54) is provided with an input end and an output end; the motor (51) is connected to the input end, and one end of the screw rod (52) is vertically connected to the output end.

3. The electromechanical lock of claim 2, wherein the locking bolt is actuated by the electromechanical lock by a toggle mechanism, wherein: also comprises

A lock shell (10), an assembly space (14) is arranged in the lock shell (10), and at least a main lock hole (131) and an oblique tongue hole (132) are arranged on the lock shell (10);

a main lock assembly (20) installed in the fitting space (14); the main lock assembly (20) comprises a first moving piece (21), at least one main bolt (22) and a connecting plate (23), wherein the moving piece (21) moves the main bolt (22) to extend out of a main lock hole (131) to close the lock or retract to unlock the lock;

a latch tongue assembly (30) movable to the first moving member (21); the oblique tongue component (30) comprises a second moving part (31) and an oblique tongue (32), and the oblique tongue (32) is moved by the second moving part (31) or the first moving part (21) to extend out of the oblique tongue hole (132) to close the lock or retract to open the lock.

4. An electromechanical lock facilitating switching of bolt actuation according to claim 3, wherein: the clutch plate (41) is movably mounted on the connecting plate, and the main lock shifting plate (42) and the latch shifting plate (43) can be sequentially and movably stacked on the clutch plate (41).

5. An electromechanical lock facilitating switching of bolt actuation according to claim 3, wherein: the lock also comprises a lock core (60), the lock core (60) is provided with a shifting fork (61), and the shifting fork (61) can be shifted to enable the main lock shifting plate (42) and the latch bolt shifting plate (43) to be disconnected with the shifting block (53) and simultaneously shift the main lock bolt (22) and the latch bolt (32) or only shift the latch bolt (32);

the clutch assembly (40) also comprises a swing arm (44), and the swing arm (44) is rotatably arranged on the connecting plate (23); one end of the swing arm (44) is connected with the clutch plate (41), the other end of the swing arm is connected with the main lock shifting plate (42), and the clutch plate (41) moves to enable the swing arm (44) to swing so as to drive the main lock shifting plate (42) and the latch bolt shifting plate (43) to be disconnected with the shifting block (53);

the connecting plate (23) is provided with a concave position (231) for the shifting fork (61) to shift and an elastic block (232) for preventing the shifting fork (61) from being clamped on the connecting plate (23); the elastic block (232) is movably arranged on the connecting plate (23), and the tail end of the elastic block (232) extends into the concave position (231);

the main lock assembly (20) is further provided with a movable connecting rod (24), and the connecting rod (24) is provided with a limited end (241), a first dialing end (242) and a second dialing end (243);

the second moving part (31) is provided with a limited end (311), and the limited end (241) can be selectively limited in the limited end (311);

the latch bolt poking plate (43) is provided with a first poking part (432), and the first poking part (432) can be selectively connected with the first poking end (242); the shifting fork (61) can be selectively connected with the second shifting end (243).