CN217681081U - Dead bolt subassembly and lock body - Google Patents

Abstract

The utility model provides a square tongue subassembly and lock body, the square tongue subassembly is partial at least to be acceptd in the casing of lock body, the square tongue subassembly is including can stretching out or retracting the square tongue of casing, the square tongue includes locking piece portion, locking piece portion is close to one side of casing is equipped with arc portion, locking piece portion passes through arc portion with the casing butt. The utility model discloses a square tongue subassembly sets up arc portion through the one side that is close to the casing in locking piece portion, and thereby arc portion and casing butt are passed through to locking piece portion, and the area of contact of having solved current square tongue subassembly and casing is great frictional force, and required consumption is also big when drive assembly drive square tongue subassembly changes the state, is unfavorable for energy-conserving problem.

Description

Dead bolt subassembly and lock body

Technical Field

The utility model relates to a square tongue subassembly and lock body relates to the lock equipment field.

Background

Along with the continuous development of science and technology, the lock has also had very big development, and intelligence lock is in due transit, compares in traditional mechanical lock, and intelligence lock is more intelligent in user identification, security, managerial aspect, has security, convenience.

The square bolt assembly is a common structure in the lockset, and realizes the functions of locking and unlocking by partially exposing the shell or completely contracting the shell. The existing dead bolt assembly usually extends out or retracts from the opening on the shell, the opening on the shell is fitted with the outline of the dead bolt assembly, and a larger friction force exists between the dead bolt assembly and the shell, so that the dead bolt assembly is difficult to extend out or retract, and for the driving assembly, a larger energy is required to be provided so as to change the state of the dead bolt assembly, which is not beneficial to energy conservation.

Accordingly, there is a need for a novel deadbolt assembly and lock body that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a new square tongue subassembly and lock body, thereby the area of contact of having solved current square tongue subassembly and casing is great frictional force, and required consumption is also big when drive assembly drive square tongue subassembly changes the state, is unfavorable for energy-conserving problem.

In order to achieve the above object, the present invention provides a square bolt assembly, at least part of which is accommodated in the housing of the lock body, the square bolt assembly comprises a square bolt which can be extended out or retracted into the housing, the square bolt comprises a locking block part, the locking block part is close to one side of the housing is provided with an arc part, the locking block part passes through the arc part and the housing butt.

As a further improvement of the present invention, the arc-shaped portion is a protrusion the arc-shaped protruding portion of the upper surface of the locking piece portion or the arc-shaped recessed portion in the locking piece portion is recessed.

As a further improvement of the present invention, the square tongue assembly further includes a pulling member fixedly connected to the square tongue, and a pushing member stacked on the pulling member, wherein an elastic member is provided between the pushing member and the pulling member, the pushing member is opposite to the pulling member along the first direction after the pulling member slides, the elastic member drives the pushing member to slide along the direction opposite to the first direction.

As a further improvement of the present invention, the pushing member extends in the direction of the pulling member to form a first installation portion, the pulling member extends in the direction of the pushing member to form a second installation portion, and both ends of the elastic member are installed respectively in the first installation portion and the second installation portion.

As a further improvement of the present invention, the first mounting portion is kept away from the one end of the pushing member is provided with a first spacing portion, the second mounting portion is kept away from the one end of the pulling member is provided with a second spacing portion, the two end sleeves of the elastic member are arranged on the first mounting portion and the second mounting portion, and the first spacing portion and the second spacing portion are spacing.

As a further improvement of the present invention, the pushing element is close to the one end of the elastic element deviates from one side of the first installation portion is provided with a first gear portion, the pushing element is kept away from the one end of the elastic element is provided with a second gear portion arranged at the same side of the first gear portion.

As a further improvement of the present invention, the square tongue assembly further includes a sensing member, the sensing member is fixedly connected to the pulling member, and is configured to be connected to the circuit portion of the housing in a matching manner, so as to identify the state of the square tongue assembly.

The utility model provides a lock body, including casing, at least part accommodate spring bolt subassembly and foretell square tongue subassembly in the casing.

As a further improvement of the utility model, the lock body still includes drive assembly, drive assembly and is used for spacingly the lock piece of spring bolt assembly, drive assembly passes through the drive assembly drive square tongue assembly stretches out or retracts the casing square tongue assembly retracts behind the casing, square tongue assembly passes through drive assembly with lock piece butt is in order to relieve the lock piece is right the lock piece is spacing of spring bolt assembly.

As a further improvement of the utility model, the drive assembly includes first drive assembly and second drive assembly, first drive assembly includes that coaxial setting and synchronous pivoted are first dialled the tooth piece and are dialled the piece, second drive assembly including coaxial setting the second dial the tooth piece with be used for with locking piece complex end plectrum, first dialling the tooth piece with the tooth piece meshing is connected is dialled to the second, the square tongue subassembly still include with square tongue fixed connection's pulling piece, with the impeller of the range upon range of setting of pulling piece, the pulling piece with dial spacing connection, and quilt dial the piece drive in order to drive the square tongue stretches out or retracts the casing.

As a further improvement, the lock body further comprises a limiting part, the limiting part is arranged on the pulling part and is used for limiting the first tooth shifting piece.

As a further improvement of the present invention, the driving assembly is a lock core assembly, the lock core assembly includes a lock core and a lock core dial wheel which rotate synchronously, the lock core dial wheel rotates circumferentially to drive the dial piece to rotate circumferentially in a direction opposite to the lock core dial wheel, so as to drive the pulling piece to drive the square tongue to retract into the housing; the lock cylinder shifting wheel is movably abutted against the first gear part of the pushing piece to drive the pushing piece to slide relative to the pulling piece along the first direction, so that the second gear part of the pushing piece is abutted against the bottom shifting piece.

As a further improvement of the present invention, the driving assembly is a motor assembly, the motor assembly is engaged with the second transmission assembly, the second transmission assembly passes through the first transmission assembly and the tongue assembly are connected to drive the tongue assembly to extend out of or retract into the housing.

The utility model has the advantages that: the utility model discloses a square tongue subassembly sets up arc portion through the one side that is close to the casing at locking piece portion, and thereby locking piece portion passes through arc portion and casing butt, and thereby the area of contact of having solved current square tongue subassembly and casing is great frictional force, and required consumption is also big when drive assembly drive square tongue subassembly changes the state, is unfavorable for energy-conserving problem.

Drawings

Fig. 1 is a perspective view of a lock body according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

FIG. 3 is a side view of the latch of FIG. 1 with the second housing removed.

FIG. 4 is a perspective view of the tongue assembly of FIG. 2.

FIG. 5 is a perspective view of the tongue of one embodiment of FIG. 4.

Fig. 6 is a perspective view of an alternate embodiment of the tongue of fig. 4.

Fig. 7 is a perspective view of the pusher member of fig. 4.

Fig. 8 is a perspective view of the puller of fig. 4.

Fig. 9 is a perspective view of the front peripheral wall of one embodiment of fig. 2.

Fig. 10 is a perspective view of the front peripheral wall of the alternative embodiment of fig. 2.

Fig. 11 is a perspective view of the transmission assembly of fig. 2.

Fig. 12 is a perspective view of the plug assembly of fig. 2.

Fig. 13 is a perspective view of the touch switch of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, the present invention discloses a lock body 200, which includes a square bolt assembly 100, a housing 20, a signal bolt assembly 30, a bolt assembly 40, a locking member 50, a transmission assembly 60, a driving assembly 70 and a touch switch 80. In the embodiment of the present application, the lock body 200 is an intelligent door lock, and is installed on a door.

Referring to fig. 4, the square tongue assembly 100 includes a square tongue 1, a pushing member 2, a pulling member 3, an elastic member 4 and a sensing member 5. The latch assembly 100 is connected to the transmission assembly 60, and when the transmission assembly 60 is driven by the driving assembly 70 to rotate, the transmission assembly 60 is driven to fully retract into the housing 20 or partially expose out of the housing 20, so as to be converted into an unlocking state and a locking state. Meanwhile, when the dead bolt assembly 100 is completely retracted into the housing 20, the driving assembly 70 and the locking member 50 are linked by the dead bolt assembly 100, and the state of the locking member 50 is changed by the linked dead bolt assembly 100 under the driving of the driving assembly 70, so that the locking member 50 is released or the limit of the locking bolt assembly 40 is maintained. The square bolt assembly 100 is used for locking a door, when the square bolt assembly 100 is partially exposed out of the shell 20, the door cannot be opened, and the lock body 200 is in a locking state; when the deadbolt assembly 100 is fully retracted within the housing 20, the door is in an open state, away from the door frame, and the lock body 200 is in an unlocked state.

Referring to fig. 5 and 6, the square bolt 1 includes a locking block portion 11, a sliding groove 12 and an arc portion 13. The square tongue 1 may be partially exposed or fully retracted within the housing 20 for locking the door. The locking block part 11 is a main body of the square bolt 1 and is used for being clamped into a door frame to play a role in locking the door. The number of the locking block parts 11 is plural, and the plurality of the locking block parts 11 are arranged at intervals, in the embodiment of the present application, the number of the locking block parts 11 is three, and in other embodiments of the present application, the number of the locking block parts 11 may be any number, which is not limited herein. The sliding groove 12 is located between two adjacent locking block portions 11, and the arc portion 13 is located on one side of the locking block portion 11 close to the housing 20, and is an arc protruding portion protruding out of the upper surface of the locking block portion 11 or an arc recessed portion recessed into the locking block portion 11. The lock block portion 11 abuts against the housing 20 through the arc portion 13. The sliding grooves 12 between adjacent locking block portions 11 can ensure the accuracy of the moving direction for the process of extending or retracting the locking block portions 11 into or out of the housing 20. The arc-shaped part 13 is arranged to reduce the contact area between the tongue 1 and the housing 20 during the process of extending or retracting, reduce friction force, thereby reducing power consumption, facilitating the movement of the tongue assembly 100, and reducing the driving of the driving assembly 70. As shown in fig. 5, the arc-shaped portion 13 is an arc-shaped protruding portion protruding out of the upper surface of the locking block portion 11, as shown in fig. 6, the arc-shaped portion 13 is an arc-shaped recessed portion recessed into the locking block portion 11, and the arc-shaped portions 13 of the two different embodiments can reduce the friction area between the tongue 1 and the tongue entrance 2032 during sliding, facilitate sliding in and out of the housing 20, and reduce the power consumption required by the driving assembly 70 to drive the tongue assembly 100.

Referring to fig. 7, the pushing element 2 includes a first mounting portion 21, a first position-limiting portion 22, a first stopping portion 23 and a second stopping portion 24. The pushing member 2 and the pulling member 3 are stacked for being pushed by the driving assembly 70 to change the state of the locking member 50 when the latch assembly 100 is fully retracted into the housing 20. The first mounting portion 21 is formed by extending the pushing member 2 toward the pulling member 3, and is used for mounting the elastic member 4. The first mounting portion 21 is provided with a first limiting portion 22 at an end of the first mounting portion 21 away from the pushing member 2, and the first limiting portion 22 is used for limiting the elastic member 4 to prevent separation. The first blocking portion 23 is disposed on one side of the pushing member 2, which is close to the end of the elastic member 4 and is away from the first mounting portion 21, the second blocking portion 24 is disposed on one end of the pushing member away from the elastic member 4, and the second blocking portion 24 and the first blocking portion 23 are disposed on the same side. The first blocking portion 23 is used for touching the transmission assembly 60 when the square tongue assembly 100 is completely retracted in the housing 20 to push the transmission assembly 60 to rotate, and the second blocking portion 24 is used for being movably connected with the plug assembly 701 of the driving assembly 70 when the square tongue assembly 100 is completely retracted in the housing 20, so that the pushing member 2 can be forced to move. In the embodiment of the present application, the pushing element 2 is a unitary plate, the first mounting portion 21, the first stopping portion 23, and the second stopping portion 24 are formed by bending the plate, and the first limiting portion 22 is formed by punching and milling, in other words, the pushing element 2 is integrally formed, which is convenient for production and installation.

Referring to fig. 8, the pulling member 3 includes a second mounting portion 31, a second limiting portion 32, a limiting member 33, and a pulling member sliding groove 34. The pulling part 3 is fixedly connected with the square tongue 1, is in limit connection with the transmission component 60, and moves under the driving of the transmission component 60, so that the square tongue 1 is driven to extend out of or retract into the shell 20. The second mounting portion 31 is formed by extending the pulling member 3 toward the pushing member 2, and is used for mounting the elastic member 4. One end of the second mounting portion 31, which is far away from the pulling member 3, is provided with a second limiting portion 32, and the second limiting portion 32 is used for limiting the elastic member 4 to prevent separation. The limiting member 33 is disposed in the pulling member sliding groove 34 of the pulling member 3, and is fixedly connected to the shifting member 6012 for limiting the shifting member 6012 in the transmission assembly 60. In the process that the shifting member 6012 rotates to drive the square tongue assembly 100 to extend out or completely retract into the housing 20, the pulling member 3 slides in the pulling member sliding groove 34 along with the rotation of the shifting member 6012, so as to limit the shifting member 6012.

The elastic piece 4 is arranged between the pushing piece 2 and the pulling piece 3, and after the pushing piece 2 slides relative to the pulling piece 3 along the first direction, the elastic piece 4 is used for generating elastic force to drive the pushing piece 2 to slide along the direction opposite to the first direction. In the embodiment of the present application, the first direction is a direction away from the plug assembly 701, the pushing member 2 is movably connected with the plug assembly 701 through the second stopper 24 and is pushed by the plug assembly 701, the elastic member 4 disposed between the pushing member 2 and the pulling member 3 generates a reverse elastic force after the pushing member 2 moves, and when the plug assembly 701 no longer pushes the pushing member 2, the pushing member 2 is driven to slide in a direction opposite to the first direction, i.e., a direction close to the plug assembly 701, so as to restore the pushing member 2 to the original position. Both ends of the elastic member 4 are mounted on the first mounting portion 21 and the second mounting portion 31, respectively. In the embodiment of the present application, the elastic member 4 is a spring, and the two ends of the spring are hooks, and the spring is directly sleeved on the first mounting portion 21 and the second mounting portion 31, and is limited by the first limiting portion 22 and the second limiting portion 32, so as to prevent the spring from collapsing. In other embodiments of the present application, the first mounting portion 21 and the second mounting portion 31 may be in other forms such as mounting holes, and the elastic member 4 is installed to connect the pushing member 2 and the pulling member 3 through the mounting holes.

The sensing element 5 is disposed on the pull element 3, fixedly connected to the pull element 3, and configured to be coupled to a circuit portion of the housing 20, so as to identify the state of the tongue assembly 100. Specifically, two sensing areas are arranged on the circuit portion on the housing 20, when the dead bolt assembly 100 is partially exposed out of the housing 20 and completely retracted into the housing 20, the sensing elements 5 are respectively located in the two different sensing areas, and through identifying the sensing area where the sensing element 5 is located, it can be determined whether the dead bolt assembly 100 is partially exposed out of the housing 20 or completely retracted into the housing 20, thereby determining whether the door is in a locked state or an unlocked state.

Referring to fig. 2 and 9, the housing 20 includes a first housing 201 and a second housing 202 disposed opposite to each other, and a peripheral wall 203 connected to the first housing 201 and the second housing 202, the first housing 201, the second housing 202 and the peripheral wall 203 enclose an accommodating space, and the signal tongue assembly 30, the dead tongue assembly 100 and the latch tongue assembly 40 are at least partially accommodated in the accommodating space of the housing 20 and slidably connected to the housing 20. The locking member 50, the transmission assembly 60, the driving assembly 70 and the touch switch 80 are all accommodated in the accommodating space. Also provided on perimeter wall 203 are signal tongue inlet/outlet 2031 for allowing signal tongue assembly 30 to enter or exit housing 20, tongue inlet/outlet 2032 for allowing tongue assembly 100 to enter or exit housing 20, and tongue inlet/outlet 2033 for allowing tongue assembly 40 to enter or exit housing 20. In the embodiment of the present application, as shown in fig. 8, the signal tongue inlet/outlet 2031 and the tongue inlet/outlet 2033 are rectangular openings, the tongue inlet/outlet 2032 is an opening conforming to the outer contour of the lock block portion 11 and the sliding groove 12, and the outer surface of the lock block portion 11 has the arc portion 13, so that the contact area between the outer surface of the lock block portion 11 and the tongue inlet/outlet 2032 is reduced, and the friction is reduced. In another embodiment of the present application, please refer to fig. 10, the curved portion 13 is not disposed on the outer surface of the lock block portion 11, but disposed at a position where the tongue entrance 2032 corresponds to the lock block portion 11, i.e., the edge of the tongue entrance 2032 is protruded or recessed, and the surface of the lock block portion 11 is smooth, so that the tongue entrance 2032 can also reduce the contact area between the tongue assembly 100 and the tongue entrance 2032 and reduce the friction force when the tongue assembly 100 enters or exits.

The signal tongue assembly 30 is used to feedback the state of the lock body 200 in cooperation with the touch switch 80. Under the condition that the signal tongue assembly 30 is not subjected to external force, the signal tongue assembly 30 is partially exposed out of the shell 20, and under the action of external force, namely when the door is closed, because the door frame is not provided with a corresponding concave part of the signal tongue assembly 30, the signal tongue assembly 30 is completely contracted into the shell 20 under the force, in the process, the signal tongue assembly 30 contacts the touch switch 80 and sends a signal, the driving assembly 70 drives the lock body 200 according to the signal, and the square tongue assembly 100 is partially extended out of the shell 20, so that the locking of the lock body 200 is realized.

Bolt assembly 40 and locking piece 50 swing joint, at least partial accomodation is used for the lock door in casing 20, and bolt assembly 40 is under the condition of not receiving external effort, because self elasticity, is in the state that partly exposes in casing 20. In an embodiment of the present application, locking bolt assembly 40 is a scissor bolt assembly. When the locking piece 50 is not stressed, the locking tongue assembly 40 is abutted against the locking piece 50, is limited by the locking piece 50, is always partially exposed out of the shell 20 and cannot be completely contracted into the shell 20 even if stressed; in the process of changing the lock body 200 from the door locking state to the unlocking state, the locking member 50 moves, and at this time, the locking bolt assembly 40 is no longer limited, can freely extend and retract, is partially exposed out of the housing 20 without being stressed, and retracts into the housing 20 with being stressed.

Lock 50 is used to couple drive assembly 60 and locking bolt assembly 40 and provide a positive lock on signal bolt assembly 30 and locking bolt assembly 40. The lock 50 is disposed within the housing 20. When the locking member 50 is not driven by the transmission assembly 60, the locking member 50 limits the locking tongue assembly 40, and does not limit the signal tongue assembly 30; when the locking member 50 is driven by the transmission assembly 60, the locking member 50 does not limit the position of the latch assembly 40, and limits the position of the signal tongue assembly 30.

Referring to fig. 11, the transmission assembly 60 includes a first transmission assembly 601 and a second transmission assembly 602. The transmission assembly 60 is coupled to the drive assembly 70 and the locking member 50 to transmit the drive changes made by the drive assembly 70 to the locking member 50. The first transmission assembly 601 includes a first shifting tooth piece 6011 and a shifting member 6012, and the first shifting tooth piece 6011 and the shifting member 6012 are coaxially disposed and rotate synchronously. The second drive assembly 602 includes a second gear piece 6021 and a bottom gear piece 6022, with the second gear piece 6021 and the bottom gear piece 6022 being coaxially disposed. The first shifting tooth piece 6011 and the second shifting tooth piece 6021 are located at the same height and are in meshed connection. The first shifting tooth piece 6011 and the second shifting tooth piece 6021 rotate in opposite directions.

Drive assembly 70 is used to drive lock body 200 to change the state of one or more of deadbolt assembly 40, and deadbolt assembly 100. In the embodiment of the present application, the driving assembly 70 includes a lock cylinder assembly 701 and a motor assembly 702, and in other embodiments of the present application, the driving assembly 70 may further include a handle assembly, a fingerprint recognition assembly, a face recognition assembly, and the like, as long as the driving function can be performed, which is not limited thereto.

Referring to fig. 12, the plug assembly 701 includes a plug 7011 and a plug thumbwheel 7012. The lock cylinder 7011 and the lock cylinder dial wheel 7012 rotate synchronously, the lock cylinder dial wheel 7012 is movably connected with the dial piece 6012, and when the square tongue assembly 100 is completely retracted to the shell 20, the lock cylinder dial wheel 7012 is movably abutted to one end, namely a first gear portion 23, of the pushing piece 2 close to the lock cylinder dial wheel 7012, and the pushing piece 2 is driven to move through rotation of the lock cylinder dial wheel 7012; when the lock cylinder shifting wheel 7012 abuts against the shifting member 6012, the shifting member 6012 is driven to rotate by the rotation of the lock cylinder shifting wheel 7012, so as to drive the square tongue 501 to partially expose or completely retract into the housing 20. Meanwhile, when the lock cylinder dial wheel 7012 abuts against one end, namely the first stop part 23, of the pushing part 2 close to the lock cylinder dial wheel 7012, the pushing part 2 moves to drive the second stop part 24 to move, the second stop part 24 is movably connected with the bottom dial plate 6022 at the moment to drive the bottom dial plate 6022 to rotate, the bottom dial plate 6022 abuts against the locking piece 50, and the rotation of the bottom dial plate 6022 drives the locking piece 50 to change the position, so that the limit of the locking piece 50 on the lock tongue assembly 40 is released.

The motor assembly 702 is engaged with the second transmission assembly 602 to drive the second transmission assembly 602 to rotate, so as to drive the second shifting piece 6021 and the bottom shifting piece 6022 which are coaxially arranged to rotate. The second pick plate 6021 is driven by the first transmission assembly 601, and the first transmission assembly 601 is connected to the dead bolt assembly 100, so as to drive the dead bolt assembly 100 to be partially exposed out of the housing 20 or completely retracted in the housing 20. The bottom paddle 6022 abuts against the locking member 50, and rotation of the bottom paddle 6022 displaces the locking member 50, thereby releasing the locking member 50 from locking the latch assembly 40.

Referring to fig. 13, the touch switch 80 includes a switch body 801, an elastic arm 802, and a second fixing element 803. The lock body 200 includes at least one touch switch 80, and the touch switch 80 is in signal connection with the driving assembly 70. The switch body 801 of the touch switch 80 is disposed in the housing 20 through the second fixing member 803, and the elastic arm 802 is disposed at an angle to the switch body 801. In the embodiment of the present application, two touch switches 80 are provided in total. A touch switch 80 is disposed adjacent to the signal tongue assembly 30, and when the signal tongue assembly 30 is retracted into the housing 20, the signal tongue assembly 30 abuts against the elastic arm 802 of the touch switch 80, so that the touch switch 80 sends an off-lock signal. Another touch switch 80 is disposed near locking bolt assembly 40, and when locking bolt assembly 40 retracts into housing 20, locking bolt assembly 40 abuts against elastic arm 802 of touch switch 80, so that touch switch 80 sends out a signal, and lock body 200 is unlocked.

The utility model discloses a square tongue subassembly 1000 is through setting up arc portion 13 in one side that lock block portion 11 is close to casing 20, lock block portion 11 passes through arc portion 13 and casing 20 butt, thereby it is great with the great frictional force of area of contact of casing in-process and casing to have solved current square tongue subassembly and exposed or contract completely at lock block part, thereby the power consumption that drive assembly needs is also big, thereby square tongue subassembly and spring bolt subassembly linkage cooperation of being not convenient for are relieved or are kept the spacing problem of spring bolt subassembly.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims (13)

1. A dead bolt assembly housed at least partially within a housing of a lock body, comprising: the square bolt subassembly is including can stretching out or retracting the square bolt of casing, the square bolt includes locking piece portion, locking piece portion is close to one side of casing is equipped with arc portion, locking piece portion passes through arc portion with the casing butt.

2. The tongue assembly of claim 1, wherein: the arc portion is the protrusion the arc bulge of the upper surface of locking piece portion or for sunken extremely the arc depressed part in the locking piece portion.

3. The tongue assembly of claim 1, wherein: the square tongue assembly further comprises a pulling piece fixedly connected with the square tongue and a pushing piece stacked with the pulling piece, an elastic piece is arranged between the pushing piece and the pulling piece, and after the pushing piece slides along a first direction relative to the pulling piece, the elastic piece drives the pushing piece to slide along a direction opposite to the first direction.

4. The tongue assembly of claim 3, wherein: the pushing piece extends towards the pulling piece to form a first installation part, the pulling piece extends towards the pushing piece to form a second installation part, and two ends of the elastic piece are respectively installed on the first installation part and the second installation part.

5. The tongue assembly of claim 4, wherein: the end of the first installation part, which is far away from the pushing part, is provided with a first limiting part, the end of the second installation part, which is far away from the pulling part, is provided with a second limiting part, and two ends of the elastic part are sleeved on the first installation part and the second installation part and are limited by the first limiting part and the second limiting part.

6. The tongue assembly of claim 4, wherein: one end of the pushing part, which is close to the elastic part, is provided with a first gear part on the side deviating from the first mounting part, and one end of the pushing part, which is far away from the elastic part, is provided with a second gear part arranged on the same side as the first gear part.

7. The tongue assembly of claim 3, wherein: the square tongue assembly further comprises a sensing piece, wherein the sensing piece is fixedly connected to the pulling piece and is configured to be in matched connection with the circuit part on the shell so as to identify the state of the square tongue assembly.

8. A lock body is characterized in that: comprising a housing, a latch bolt assembly at least partially housed within the housing, and the deadbolt assembly of any of claims 1-7.

9. The lock body of claim 8, wherein: the lock body still includes drive assembly, drive assembly and is used for spacingly the lock piece of spring bolt subassembly, drive assembly passes through the drive assembly drive the square tongue subassembly stretches out or retracts the casing the square tongue subassembly retracts behind the casing, the square tongue subassembly passes through drive assembly with the lock piece butt is in order to relieve the lock piece is right the spring bolt subassembly is spacing.

10. The lock body of claim 9, wherein: the transmission assembly comprises a first transmission assembly and a second transmission assembly, the first transmission assembly comprises a first poking tooth piece and a poking piece which are coaxially arranged and synchronously rotate, the second transmission assembly comprises a second poking tooth piece and a bottom poking piece matched with the locking piece, the second poking tooth piece and the bottom poking piece are coaxially arranged, the first poking tooth piece is meshed with the second poking tooth piece, the square tongue assembly further comprises a pulling piece fixedly connected with the square tongue and a pushing piece stacked with the pulling piece, and the pulling piece is in limiting connection with the poking piece and driven by the poking piece to drive the square tongue to extend out of or retract into the shell.

11. The lock body of claim 10, wherein: the lock body further comprises a limiting piece, and the limiting piece is arranged on the pulling piece and used for limiting the first poking tooth piece.

12. The lock body of claim 10, wherein: the driving assembly is a lock cylinder assembly, the lock cylinder assembly comprises a lock cylinder and a lock cylinder shifting wheel which rotate synchronously, the lock cylinder shifting wheel rotates circumferentially to drive the shifting piece to rotate circumferentially in the direction opposite to the lock cylinder shifting wheel, so that the pulling piece is driven to drive the square tongue to retract into the shell; the lock cylinder shifting wheel is movably abutted against the first gear part of the pushing piece to drive the pushing piece to slide relative to the pulling piece along the first direction, so that the second gear part of the pushing piece is abutted against the bottom shifting piece.

13. The lock body of claim 10, wherein: the driving assembly is a motor assembly, the motor assembly is meshed with the second transmission assembly, and the second transmission assembly is connected with the square tongue assembly through the first transmission assembly so as to drive the square tongue assembly to extend out of or retract into the shell.

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