CN111335744A - Latch bolt mechanism of lock and lock - Google Patents

Abstract

The present application discloses a latch bolt mechanism for a lock and a lock, wherein the latch bolt mechanism includes: a latch bolt assembly; a latch bolt assembly reset part; Abutting with the connecting block, when the limiter is in the unlocking position, the first matching part no longer defines the connecting block; the adapter plate has a first part and a second part; the oblique bolt assembly is located above the bolt assembly , has a pressing part; the first part of the rotating plate cooperates with the pressing part, the second part of the rotating plate cooperates with the second matching part; When the pressing part presses the first part to rotate the rotating plate, the rotating plate drives the limiter to rotate to the unlocking working position through the cooperation of the second part and the second matching part. The locking and unlocking process of the latch mechanism of the present application is simple, and the reliability and stability are good.

Description

Latch mechanism of lock and lock

technical field

The invention relates to the field of mortise locks, in particular to a slant tongue mechanism of a lock and a lock.

Background technique

The patent document whose publication number is CN105113856A discloses a mortise lock oblique tongue mechanism, including: oblique tongue assembly; oblique tongue return spring; trigger tongue assembly; trigger tongue return spring; The latch tongue assembly has a stopper surface of the stopper tongue, and the trigger has a first matching part for cooperating with the stopper surface of the stopper tongue; when the trigger is pressed against the return spring of the trigger, the first matching part is separated from the stopper stopper of the stopper tongue. The trigger tongue assembly has a protruding block, and the trigger has a second matching portion extending between the tongue end of the triggering tongue assembly and the protruding block.

The above-mentioned oblique tongue mechanism has the following defects: when the door is opened, the trigger tongue is accidentally pressed, so that the trigger tongue assembly is pressed into the lock housing, so that the protrusion is separated from the second matching part, and the oblique tongue assembly is in the oblique tongue return spring. Under the action of the lock case, the lock shell is automatically extended, and finally the trigger is reset. That is, after the trigger tongue is accidentally touched, the oblique tongue assembly is locked and cannot close the door normally, and it needs to be unlocked to close the door normally.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention proposes a latch mechanism and a lock for a lock.

The technical scheme adopted by the present invention is as follows:

A latch mechanism of a lock, the lock comprising a lock shell assembly, and the latch mechanism comprising:

The lock tongue assembly is slidably arranged on the lock shell assembly, and the lock tongue assembly includes a connection block and a lock tongue rotatably mounted on the connection block;

The lock tongue assembly reset piece is installed on the lock shell assembly and used to cooperate with the lock tongue assembly, so that the lock tongue of the lock tongue assembly can pass through the lock shell assembly;

The limiting member is rotatably mounted on the lock shell assembly, the limiting member has a first matching portion and a second matching portion, and the limiting member has a limiting working position and an unlocking working position. When the limiting member is in the limiting position When in the working position, the first matching portion is used to abut the connecting block to limit the movement of the bolt assembly to the inside of the lock housing assembly. When the limiting member is in the unlocking working position, the first matching portion no longer defines the connecting block. , the lock tongue assembly can move to the inside of the lock shell assembly, and the limiter can be reset to the limit working position when it is not subjected to external force;

The adapter plate is rotatably mounted on the lock shell assembly, the rotating plate has a first part and a second part, and the first part and the second part are respectively located on both sides of the rotation axis of the adapter plate;

The oblique latch bolt assembly is located above the latch bolt assembly, the oblique latch bolt assembly is slidably arranged on the lock housing assembly, the latch bolt assembly includes a connecting piece and an oblique latch bolt rotatably mounted on the connecting piece, the connecting piece has a a pressing part; the first part of the rotating plate is matched with the pressing part, and the second part of the rotating plate is matched with the second matching part;

The oblique bolt reset piece is installed on the lock shell assembly and used to cooperate with the oblique bolt assembly, so that the oblique bolt of the oblique bolt assembly can pass through the lock casing assembly. When the shell assembly is locked, the pressing part presses the first part to rotate the rotating plate, and the rotating plate drives the limiting member to rotate to the unlocking working position through the cooperation of the second part and the second matching part.

The working principle of the oblique bolt mechanism of the present application: when the door is closed, the oblique bolt assembly is pressed into the lock shell assembly. At this time, the oblique bolt assembly will not press the adapter plate, that is, the limiter is in the limit work. position, the first matching part can abut with the connecting block, restricting the movement of the lock tongue assembly to the inside of the lock shell assembly, that is, the lock tongue is locked and cannot retract the lock shell assembly; when the limiter is directly or indirectly triggered or obliquely When the deadbolt assembly is no longer pressed (at this time, the pressing part can drive the adapter plate to rotate), the limiting member rotates to the unlocking working position. At this time, the first matching part no longer defines the connecting block, and the deadbolt assembly can move toward the lock case. The inside of the assembly moves. In the oblique bolt mechanism of the present application, even if the oblique bolt assembly is mistakenly pressed (retracts the oblique bolt to the lock shell assembly) in the door-open state, when released, the oblique bolt assembly can be activated under the action of the oblique bolt reset member. Reset can drive the adapter plate to rotate, so that the limiter rotates to the unlocking working position. This form of cooperation greatly improves the stability and is not afraid of misoperation.

The locking and unlocking process of the latch mechanism of the present application is simple, and the reliability and stability are good.

In one embodiment of the present invention, the lock tongue is a bidirectional lock tongue.

In one embodiment of the present invention, the first matching portion is a rotating shaft rotatably mounted on the limiting member.

The first matching portion is a rotating shaft, which can reduce friction and facilitate the position switching of the first matching portion.

In one embodiment of the present invention, when the limiting member is not subjected to external force, it is reset to the limiting working position by its own gravity or the restoring member of the limiting member.

The reset member of the deadbolt assembly is a spring or a torsion spring; the reset member of the limiting member is a spring or a torsion spring; the oblique latch reset member is a spring or a torsion spring.

The application also discloses a lock, comprising a lock housing assembly, and further comprising:

The oblique tongue mechanism described above;

The main lock tongue is slidably arranged on the lock shell assembly, and the main lock tongue includes a lock tongue part and a positioning part;

an unlocking plate, which is movably arranged on the lock shell assembly, and is used for cooperating with the limiting member to switch the limiting member to the unlocking working position;

The transmission mechanism is used for cooperating with the oblique tongue mechanism to unlock the limiter to the unlocking working position, and also for cooperating with the main lock tongue to make the lock tongue part pass through the lock case assembly or retract the lock case assembly; the transmission mechanism It includes a driving member and a main lock tongue shifting block, the driving member is rotatably mounted on the lock shell assembly, the main lock tongue shifting block is rotatably mounted on the lock shell assembly, and cooperates with the driving member, and the driving member can drive the main lock tongue shifting block. The lock tongue shift block rotates, and the main lock tongue shift block has a first transmission part that cooperates with the positioning part of the main lock tongue. When the main lock tongue shift block rotates, the main lock tongue can be driven to slide by the first transmission part. Make the lock tongue part pass through the lock shell assembly or retract the lock shell assembly; the driving part also has a first convex part that cooperates with the unlocking plate, and the driving part drives the main lock tongue to rotate to make the main lock tongue retract. When the action of the locking shell assembly is returned, the first convex portion drives the unlocking plate to move, so that the limiting member is switched to the unlocking working position;

An electric drive mechanism is used to drive the drive member to rotate.

The electric drive mechanism can drive the driving member to rotate, so that the first transmission part can rotate synchronously, and under the action of the first transmission part, the main lock tongue can be driven to pass through the lock shell assembly or retract the lock shell assembly.

In practical application, the electric drive mechanism can be a motor, which directly drives the drive member to rotate.

In one embodiment of the present invention, the positioning portion has a first notch, the first notch has a first side wall and a second side wall, and the first side wall is close to the latch portion, and the second side wall is Away from the lock tongue part, the first transmission part cooperates with the first notch, and drives the main lock tongue to slide through the first notch. When the lock tongue part of the main lock tongue passes through the lock shell assembly, the first transmission part The first transmission part abuts against the first side wall, when the lock tongue part of the main lock tongue retracts the lock shell assembly, the first transmission part abuts against the second side wall; the second side wall has a buffer zone , after the lock tongue part of the main lock tongue retracts the lock shell assembly, the first transmission part can continue to rotate in the buffer zone; when the driving part drives the first transmission part to rotate, the lock tongue part retracts into the lock shell assembly , the driving member continues to rotate, and while the first transmission part is idling in the buffer zone, the first convex part drives the unlocking plate to move, so that the limiting member is switched to the unlocking working position.

The buffer area set on the second side wall is to provide the time for the first convex part to cooperate with the oblique bolt mechanism, so that the oblique bolt mechanism will not be unlocked when the main bolt is unlocked, effectively ensuring that the main bolt can slide into the lock shell reliably. within the component.

In practice, the buffer area can be a curved surface.

In one embodiment of the present invention, there is an idling structure between the main lock tongue shifting block and the driving member; the idling structure includes a first matching block arranged on the main locking tongue shifting block and a first matching block arranged on the driving member. For the second matching block, the main latch block can be idly rotated to set an angle relative to the driving member. When the driving member rotates to make the second matching block abut against the first matching block, the driving member continues to rotate in the same direction to drive the main latch to dial. block synchronous rotation;

When the main lock bolt passes out of the lock housing assembly, the driving member can be reset, and when the main lock bolt shifting block is driven by other mechanisms, the main locking bolt shifting block can idle relative to the driving member and unlock the main lock bolt;

The lock also includes a mechanical unlocking mechanism, which is used to drive the main lock bolt to rotate idly and drive the main lock bolt to retract the lock case assembly when the main lock bolt passes through the lock case assembly.

The setting of the idling structure can prevent the main lock tongue shifting block from generating force with the driving member when the mechanical unlocking mechanism works, so as to ensure the reliable and smooth operation of the mechanical unlocking mechanism.

In one embodiment of the present invention, the limiting member has a third matching portion, and the mechanical unlocking mechanism includes:

The mechanical lock head is installed on the lock shell assembly, and the mechanical lock head has an unlocking dial that can be driven by a key;

A paddle, which is rotatably installed on the lock case assembly, one end of the paddle is matched with the unlocking dial, and the other end is matched with the main lock bolt. When the unlocking dial is rotated, the main lock can be driven first. The dial rotates idly, and after the lock tongue portion retracts the lock shell assembly, it cooperates with the third matching portion to switch the limiting member to the unlocking working position.

The structure of the mechanical lock can prevent the lock from being violently cracked. Even if all the structures such as the handle outside the door are violently removed, only the key hole of the mechanical lock is exposed, and the unlocking dial cannot be rotated without the key. Therefore, compared with the structure without the mechanical lock, the safety can be greatly improved.

In one embodiment of the present invention, the unlocking plate is slidably mounted on the lock housing assembly; the driving member is a driving gear; the electric driving mechanism includes:

The transmission gear is rotatably mounted on the lock housing assembly, and the transmission gear includes a first bevel tooth and a first tooth meshed with the driving part;

The drive motor has a second bevel tooth meshed with the first bevel tooth on the output shaft of the drive motor.

In one embodiment of the present invention, it further includes a control board for controlling the operation of the electric drive mechanism, the transmission mechanism further includes a positioning assembly, and the positioning assembly includes:

a positioning gear, which is rotatably mounted on the lock shell assembly and meshes with the driving member, and has a trigger portion on the positioning gear;

The positioning sensor is arranged on the lock housing assembly and is electrically connected with the control board. The positioning sensor is used for sensing the triggering part, and the positioning sensor is a micro switch, a Hall switch or a photoelectric switch.

By setting the positioning gear and the positioning sensor, the position of the driving member can be judged reliably, so as to ensure that the driving member can be accurately reset after the lock tongue portion of the main lock tongue passes through the lock housing assembly. Compared with other methods, the positioning component adopts this structural form, which has higher accuracy and reliability, and is more convenient for assembly and debugging. In this embodiment, the trigger portion is the second convex portion, but other structures may also be used in practice.

The beneficial effects of the present invention are: the locking and unlocking process of the oblique tongue mechanism of the present application is simple, and the reliability and stability are good.

Description of drawings:

Fig. 1 is the state diagram of the main lock tongue and the lock tongue portion of the lock device passing through and the oblique tongue assembly retracting;

Figure 2 is a schematic diagram of a lock and a pinch plate;

Fig. 3 is the schematic diagram of main lock tongue, transmission mechanism and mechanical unlocking mechanism;

Fig. 4 is a state diagram when the main lock tongue is retracted and the third matching part is triggered under the driving action of the electric drive mechanism;

Fig. 5 is the schematic diagram of omitting the main lock tongue and the paddle in the state of Fig. 4;

Figure 6 is a schematic view of opening the main deadbolt through a mechanical unlocking mechanism;

Fig. 7 is a schematic diagram of the driving member and the main latch block.

The reference numbers in the figure are:

1. Lock shell assembly; 2. Oblique tongue mechanism; 3. Lock tongue assembly; 4. Connecting block; 5. Lock tongue; 10, the third matching part; 11, the adapter plate; 12, the first part; 13, the second part; 14, the oblique bolt assembly; 15, the connecting piece; 16, the oblique bolt; , pressing part; 18, oblique lock tongue reset piece; 19, limit piece reset piece; 20, main lock tongue; 21, lock tongue part; 22, positioning part; 23, unlocking plate; 24, transmission mechanism; 25, Driving part; 26, main latch block; 27, first transmission part; 28, first convex part; 29, electric drive mechanism; 30, first recess; 31, first side wall; 32, second side wall; 33, buffer zone; 34, first matching block; 35, second matching block; 36, mechanical unlocking mechanism; 37, mechanical lock head; 38, unlocking dial; 39, paddle; 40, transmission gear; 41 42, the first tooth; 43, the drive motor; 44, the second bevel tooth; 45, the control board; 46, the positioning gear; 47, the trigger part; 48, the positioning sensor;

Detailed ways:

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 7, the present embodiment discloses a lock, including a lock shell assembly 1 and a lock shell assembly 1, as shown in Figures 1 and 3, the oblique tongue mechanism 2 includes:

The deadbolt assembly 3 is slidably arranged on the lock shell assembly 1, and the deadbolt assembly 3 includes a connecting block 4 and a locking bolt 5 rotatably mounted on the connecting block 4;

The lock tongue assembly reset piece 6 is installed on the lock shell assembly 1, and is used to cooperate with the lock tongue assembly 3, so that the lock tongue 5 of the lock tongue assembly 3 can pass through the lock shell assembly 1;

The limiting member 7 is rotatably mounted on the lock shell assembly 1. The limiting member 7 has a first matching portion 8 and a second matching portion 9. The limiting member 7 has a limiting working position and an unlocking working position. When the limiting member 7 When in the limit working position, the first matching portion 8 is used for abutting with the connecting block 4 to limit the movement of the latch bolt assembly 3 to the inside of the lock shell assembly 1. When the limiting member 7 is in the unlocking working position, the first matching portion 8 The connection block 4 is no longer limited, the bolt assembly 3 can move to the inside of the lock shell assembly 1, and the limiter 7 can be reset to the limit working position when it is not subjected to external force;

The adapter plate 11 is rotatably mounted on the lock shell assembly 1, the rotating plate has a first part 12 and a second part 13, and the first part 12 and the second part 13 are respectively located on both sides of the rotation axis of the adapter plate 11;

The oblique bolt assembly 14 is located above the bolt assembly 3. The oblique bolt assembly 14 is slidably arranged on the lock shell assembly 1. The bolt assembly 3 includes a connecting piece 15 and an oblique bolt 16 rotatably mounted on the connecting piece 15. The connecting piece 15 has a pressing portion 17; the first portion 12 of the rotating plate is matched with the pressing portion 17, and the second portion 13 of the rotating plate is matched with the second matching portion 9;

The oblique bolt reset member 18 is installed on the lock shell assembly 1 and is used to cooperate with the oblique bolt assembly 14, so that the oblique bolt of the oblique bolt assembly 14 can pass through the lock casing assembly 1. When the oblique bolt of the oblique bolt assembly 14 When passing through the lock case assembly 1 , the pressing part 17 presses the first part 12 to rotate the rotating plate, and the rotating plate drives the limiting member 7 to rotate to the unlocking position through the cooperation of the second part 13 and the second matching part 9 .

The working principle of the oblique bolt mechanism 2 of the present application: when the door is closed, the oblique bolt assembly 14 is pressed into the lock shell assembly 1. At this time, the oblique bolt assembly 14 will not press the adapter plate 11, that is, the limit The component 7 is in the limit working position, the first matching portion 8 can abut with the connecting block 4, and restrict the movement of the lock tongue assembly 3 to the inside of the lock shell assembly 1, that is, the lock tongue 5 is locked and cannot be retracted into the lock shell assembly 1; when When the limiting member 7 is directly or indirectly triggered or the oblique latch bolt assembly 14 is no longer pressed (at this time, the pressing portion 17 can drive the adapter plate 11 to rotate), the limiting member 7 rotates to the unlocking position. The first matching portion 8 no longer defines the connecting block 4 , and the bolt assembly 3 can move toward the inside of the lock housing assembly 1 . In the oblique bolt mechanism 2 of the present application, even when the door is opened, the oblique bolt assembly 14 is pressed by mistake (the oblique bolt 16 is retracted into the lock shell assembly 1 ), and when released, the oblique bolt assembly 14 is reset at the oblique bolt. Under the action of the locking member 18, it can be reset, and can drive the adapter plate 11 to rotate, so that the limiting member 7 is rotated to the unlocking position. This matching form greatly improves the stability and is not afraid of misoperation. The locking and unlocking process of the latch mechanism 2 of the present application is simple, and the reliability and stability are good.

As shown in FIG. 1 , in this embodiment, the lock tongue 5 is a bidirectional lock tongue 5 .

As shown in FIG. 3 , in this embodiment, the first matching portion 8 is a rotating shaft rotatably mounted on the limiting member 7 . The first matching portion 8 is a rotating shaft, which can reduce the frictional force and facilitate the position switching of the first matching portion 8 .

As shown in FIG. 1 , in the present embodiment, the oblique tongue mechanism 2 further includes a limiting member restoring member 19 , and the limiting member 7 is reset to the limiting working position through the limiting member restoring member 19 when no external force is applied. In other embodiments, the limiter 7 can also be reset by its own gravity. At this time, the center of gravity of the limiter 7 is not on the rotation axis of the limiter 7. In actual design, the center of gravity of the limiter 7 is close to the first matching part. 8.

In actual use, the reset member 6 of the deadbolt assembly is a spring or a torsion spring; the reset member 19 of the limiting member is a spring or a torsion spring; and the reset member 18 of the oblique latch is a spring or a torsion spring.

As shown in Figures 1 to 7, the lock also includes:

The main lock tongue 20 is slidably arranged on the lock shell assembly 1, and the main lock tongue 20 includes a lock tongue part 21 and a positioning part 22;

The unlocking plate 23 is movably arranged on the lock shell assembly 1, and is used to cooperate with the limiting member 7 to switch the limiting member 7 to the unlocking working position;

The transmission mechanism 24 is used for cooperating with the oblique tongue mechanism 2 to unlock the limiter 7 to the unlocking working position, and also for cooperating with the main lock tongue 20 to make the lock tongue part 21 pass through the lock case assembly 1 or retract the lock case Assembly 1; the transmission mechanism 24 includes a driving member 25 and a main lock tongue block 26, the driving member 25 is rotatably mounted on the lock shell assembly 1, and the main lock tongue dial 26 is rotatably installed on the lock shell assembly 1, and is connected with the driving member 25 In cooperation, the driving member 25 can drive the main latch block 26 to rotate. The main latch block 26 has a first transmission portion 27 that cooperates with the positioning portion 22 of the main latch 20. When the main latch block 26 rotates, the A transmission part 27 can drive the main lock tongue 20 to slide, so that the lock tongue part 21 can pass through the lock case assembly 1 or retract the lock case assembly 1; the driving part 25 also has a first convex part 28 that cooperates with the unlocking plate 23. When the driving member 25 drives the main latch block 26 to rotate so that the main latch 20 is retracted into the lock housing assembly 1, the first convex portion 28 drives the unlocking plate 23 to move, so that the limiting member 7 is switched to the unlocking working position;

The electric driving mechanism 29 is used to drive the driving member 25 to rotate.

The electric driving mechanism 29 can drive the driving member 25 to rotate, so that the first transmission part 27 can be rotated synchronously, and under the action of the first transmission part 27, the main lock tongue 20 can be driven to pass through the lock case assembly 1 or retract the lock case Component 1.

In actual use, the electric driving mechanism 29 can be a motor, which directly drives the driving member 25 to rotate.

As shown in FIG. 3 , in this embodiment, the positioning portion 22 has a first notch 30 , the first notch 30 has a first side wall 31 and a second side wall 32 , and the first side wall 31 is close to the locking tongue portion 21. The second side wall 32 is far away from the latch portion 21. The first transmission portion 27 cooperates with the first notch 30 to drive the main latch 20 to slide through the first notch 30. When the latch portion 21 of the main latch 20 passes out When the lock case assembly 1 is used, the first transmission part 27 abuts against the first side wall 31 , and when the lock tongue part 21 of the main lock tongue 20 is retracted into the lock case assembly 1 , the first transmission part 27 abuts against the second side wall 32 The second side wall 32 has a buffer zone 33. After the bolt portion 21 of the main bolt 20 is retracted into the lock housing assembly 1, the first transmission portion 27 can also continue to rotate in the buffer zone 33; when the driving member 25 drives the first The transmission part 27 rotates, and after the lock tongue part 21 is retracted into the lock case assembly 1, the driving part 25 continues to rotate, while the first transmission part 27 is idling in the buffer zone 33, the first convex part 28 drives the unlocking plate 23 to move, so that the limit Position 7 is switched to the unlocked working position.

The buffer zone 33 provided on the second side wall 32 is to provide time for the first convex portion 28 to cooperate with the oblique bolt mechanism 2, so that the oblique bolt mechanism 2 will not be unlocked when the main bolt 20 is unlocked, effectively ensuring the main bolt 20 slide into the lock housing assembly 1 reliably. In practice, the buffer area 33 can be an arc surface.

As shown in FIGS. 3 and 7 , in this embodiment, there is an idling structure between the main latch block 26 and the driving member 25 ; On the second matching block 35 on the driving member 25, the main lock tongue shifting block 26 can idly rotate relative to the driving member 25 to set an angle. When the driving member 25 rotates to make the second matching block 35 abut against the first matching block 34, The driving member 25 continues to rotate in the same direction to drive the main latch block 26 to rotate synchronously;

When the main bolt 20 passes through the lock housing assembly 1, the driving member 25 can be reset, and when the main bolt shifting block 26 is driven by other mechanisms, the main bolt shifting block 26 can idle relative to the driving member 25 and unlock the main bolt 20;

The lock also includes a mechanical unlocking mechanism 36 , which is used to drive the main deadbolt dial 26 to idle and drive the main deadbolt 20 to retract into the lock casing assembly 1 when the main deadbolt 20 passes through the lock casing assembly 1 .

The idling structure can prevent the main latch block 26 from generating force with the driving member 25 when the mechanical unlocking mechanism 36 works, thereby ensuring the reliable and smooth operation of the mechanical unlocking mechanism 36 .

As shown in Figures 1 and 3, in this embodiment, the limiting member 7 has a third matching portion 10, and the mechanical unlocking mechanism 36 includes:

The mechanical lock head 37 is installed on the lock case assembly 1, and the mechanical lock head 37 has an unlocking dial 38 that can be driven by a key;

The paddle 39 is rotated and installed on the lock housing assembly 1. One end of the paddle 39 is matched with the unlocking paddle 38, and the other end is matched with the main lock tongue paddle 26. When the unlocking paddle 38 rotates, it can first drive the main lock tongue paddle. 26 is idling, and after the locking tongue portion 21 is retracted into the lock shell assembly 1, it cooperates with the third matching portion 10, so that the limiting member 7 is switched to the unlocking working position.

The structure of the mechanical lock 37 can prevent the lock from being cracked by force. Even if all the structures such as the handle outside the door are violently removed, only the key hole of the mechanical lock 37 is exposed, and the unlocking dial 38 cannot be rotated without the key. Therefore, compared with the structure without the mechanical lock 37, the safety can be greatly improved.

As shown in FIG. 1, in this embodiment, the unlocking plate 23 is slidably mounted on the lock housing assembly 1; the driving member 25 is a driving gear; the electric driving mechanism 29 includes:

The transmission gear 40 is rotatably mounted on the lock housing assembly 1, and the transmission gear 40 includes a first bevel tooth 41 and a first tooth 42 meshing with the driving member 25;

The drive motor 43 is driven, and the output shaft of the drive motor 43 has a second bevel tooth 44 meshing with the first bevel tooth 41 .

As shown in FIGS. 1 and 3 , in this embodiment, a control board 45 for controlling the operation of the electric drive mechanism 29 is further included, and the transmission mechanism 24 further includes a positioning assembly, and the positioning assembly includes:

The positioning gear 46 is rotatably mounted on the lock housing assembly 1 and meshes with the driving member 25, and the positioning gear 46 has a trigger portion 47;

The positioning sensor 48 is arranged on the lock housing assembly 1 and is electrically connected to the control board 45 . The positioning sensor 48 is used to sense the trigger part 47 , and the positioning sensor 48 is a micro switch, a Hall switch or a photoelectric switch.

By setting the positioning gear 46 and the positioning sensor 48, the position of the driving member 25 can be reliably determined, so as to ensure that the driving member 25 can be accurately reset after the lock tongue portion 21 of the main lock tongue 20 passes through the lock housing assembly 1. Compared with other methods, the positioning component adopts this structural form, which has higher accuracy and reliability, and is more convenient for assembly and debugging. In this embodiment, the trigger portion 47 is the second convex portion, and other structures may also be used in practice.

As shown in FIG. 2 , in actual use, the lock is installed on the door body, the gusset plate 100 is installed on the door frame, and the gusset plate 100 has holes corresponding to the main bolt 20 and holes corresponding to the bolt 5 . There is no hole corresponding to the oblique bolt 16, so after the door is closed, the oblique bolt assembly 14 will be retracted into the lock housing assembly 1 under pressure (this application is not limited to fully retracted, because it can also be partially retracted).

The status of the locks in this application:

As shown in FIGS. 1 and 2 , the door is in the closed state at this time, the bolt portion 21 of the main bolt 20 and the bolt 5 are extended, the oblique bolt 16 is compressed and contracted, and the pressing portion 17 does not act on the adapter plate 11 . Therefore, the limiting member 7 is in the limiting working position, that is, the first matching portion 8 is used for abutting with the connecting block 4 to limit the movement of the latch bolt assembly 3 to the inside of the lock housing assembly 1;

As shown in FIGS. 4 and 5 , the electric drive mechanism 29 works, firstly drives the main latch 20 to retract the lock housing assembly 1 through the main latch block 26 , and then drives the unlocking plate 23 to move up through the first convex portion 28 , so that the The unlocking plate 23 drives the limiting member 7 to rotate to the unlocking working position. At this time, the first matching portion 8 no longer defines the connecting block 4, and the bolt assembly 3 can move to the inside of the lock shell assembly 1, that is, the door can be opened;

As shown in FIG. 6 , when the mechanical unlocking is required, the key is inserted into the mechanical lock head 37 at this time, and the rotation of the key drives the unlocking dial 38 to rotate, and the unlocking dial 38 cooperates with the dial first to drive the main latch dial 26 to rotate , the main lock tongue 20 is retracted, and then cooperates with the third matching portion 10 to drive the limiting member 7 to rotate to the unlocking working position. At this time, the first matching portion 8 no longer restricts the connecting block 4, and the locking tongue assembly 3 can move to the unlocking position. The inside of the lock housing assembly 1 is moved, that is, the door can be opened.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and accompanying drawings of the present invention can be directly or indirectly used in other related technical fields. All are similarly included in the protection scope of the present invention.

Claims (10)

1. The oblique tongue mechanism of a lock, the lock comprises a lock shell assembly, and it is characterized in that, the oblique tongue mechanism comprises: The lock tongue assembly is slidably arranged on the lock shell assembly, and the lock tongue assembly includes a connection block and a lock tongue rotatably mounted on the connection block; The lock tongue assembly reset piece is installed on the lock shell assembly and used to cooperate with the lock tongue assembly, so that the lock tongue of the lock tongue assembly can pass through the lock shell assembly; The limiting member is rotatably mounted on the lock shell assembly, the limiting member has a first matching portion and a second matching portion, and the limiting member has a limiting working position and an unlocking working position. When the limiting member is in the limiting position When in the working position, the first matching portion is used to abut the connecting block to limit the movement of the bolt assembly to the inside of the lock housing assembly. When the limiting member is in the unlocking working position, the first matching portion no longer defines the connecting block. , the lock tongue assembly can move to the inside of the lock shell assembly, and the limiter can be reset to the limit working position when it is not subjected to external force; The adapter plate is rotatably mounted on the lock shell assembly, the rotating plate has a first part and a second part, and the first part and the second part are respectively located on both sides of the rotation axis of the adapter plate; The oblique latch bolt assembly is located above the latch bolt assembly, the oblique latch bolt assembly is slidably arranged on the lock housing assembly, the latch bolt assembly includes a connecting piece and an oblique latch bolt rotatably mounted on the connecting piece, the connecting piece has a a pressing part; the first part of the rotating plate is matched with the pressing part, and the second part of the rotating plate is matched with the second matching part; The oblique bolt reset piece is installed on the lock shell assembly and used to cooperate with the oblique bolt assembly, so that the oblique bolt of the oblique bolt assembly can pass through the lock casing assembly. When the shell assembly is locked, the pressing part presses the first part to rotate the rotating plate, and the rotating plate drives the limiting member to rotate to the unlocking working position through the cooperation of the second part and the second matching part. 2 . The oblique tongue mechanism of a lock according to claim 1 , wherein the lock tongue is a bidirectional lock tongue. 3 . 3 . The latch mechanism of a lock according to claim 1 , wherein the first matching portion is a rotating shaft that is rotatably mounted on the limiting member. 4 . 4 . The latch mechanism of a lock according to claim 1 , wherein the limiting member is reset to the limiting working position by its own gravity or the limiting member restoring member when it is not subjected to external force. 5 . 5. A lock, comprising a lock housing assembly, characterized in that it also comprises: The oblique tongue mechanism according to any one of claims 1 to 4; The main lock tongue is slidably arranged on the lock shell assembly, and the main lock tongue includes a lock tongue part and a positioning part; an unlocking plate, which is movably arranged on the lock shell assembly, and is used for cooperating with the limiting member to switch the limiting member to the unlocking working position; The transmission mechanism is used for cooperating with the oblique tongue mechanism to unlock the limiter to the unlocking working position, and also for cooperating with the main lock tongue to make the lock tongue part pass through the lock case assembly or retract the lock case assembly; the transmission mechanism It includes a driving member and a main lock tongue shifting block, the driving member is rotatably mounted on the lock shell assembly, the main lock tongue shifting block is rotatably mounted on the lock shell assembly, and cooperates with the driving member, and the driving member can drive the main lock tongue shifting block. The lock tongue shift block rotates, and the main lock tongue shift block has a first transmission part that cooperates with the positioning part of the main lock tongue. When the main lock tongue shift block rotates, the main lock tongue can be driven to slide by the first transmission part. Make the lock tongue part pass through the lock shell assembly or retract the lock shell assembly; the driving part also has a first convex part that cooperates with the unlocking plate, and the driving part drives the main lock tongue to rotate to make the main lock tongue retract. When the action of the locking shell assembly is returned, the first convex portion drives the unlocking plate to move, so that the limiting member is switched to the unlocking working position; An electric drive mechanism is used to drive the drive member to rotate. 6 . The lock according to claim 5 , wherein the positioning portion has a first notch, the first notch has a first side wall and a second side wall, and the first side wall is close to the lock tongue. 7 . The second side wall is away from the lock tongue part, the first transmission part cooperates with the first notch, and drives the main lock tongue to slide through the first notch. When the lock tongue part of the main lock tongue passes through the lock shell assembly , the first transmission part abuts against the first side wall, and when the lock tongue part of the main lock tongue retracts the lock shell assembly, the first transmission part abuts against the second side wall; the first transmission part abuts against the second side wall; The two side walls have buffer zones. After the tongue part of the main lock tongue is retracted into the lock shell assembly, the first transmission part can continue to rotate in the buffer zone; when the driving part drives the first transmission part to rotate, the tongue part can be rotated. After the lock shell assembly is retracted, the driving member continues to rotate, and the first protruding portion drives the unlocking plate to move while the first transmission part is idling in the buffer zone, so that the limiting member is switched to the unlocking working position. 7 . The lock according to claim 6 , wherein there is an idling structure between the main lock bolt shifting block and the driving member; the idling structure comprises a first matching block arranged on the main bolt shifting block and a The second matching block is arranged on the driving member, the main lock tongue shifting block can be idly rotated relative to the driving member to set the angle, when the driving member rotates to make the second matching block abut against the first matching block, the driving member continues to rotate in the same direction It can drive the main lock tongue dial to rotate synchronously; When the main lock bolt passes out of the lock housing assembly, the driving member can be reset, and when the main lock bolt shifting block is driven by other mechanisms, the main locking bolt shifting block can idle relative to the driving member and unlock the main lock bolt; The lock also includes a mechanical unlocking mechanism, which is used to drive the main lock bolt to rotate idly and drive the main lock bolt to retract the lock case assembly when the main lock bolt passes through the lock case assembly. 8. The lock according to claim 7, wherein the limiting member has a third matching portion, and the mechanical unlocking mechanism comprises: The mechanical lock head is installed on the lock shell assembly, and the mechanical lock head has an unlocking dial that can be driven by a key; A paddle, which is rotatably installed on the lock case assembly, one end of the paddle is matched with the unlocking dial, and the other end is matched with the main lock bolt. When the unlocking dial is rotated, the main lock can be driven first. The dial rotates idly, and after the lock tongue portion retracts the lock shell assembly, it cooperates with the third matching portion to switch the limiting member to the unlocking working position. 9. The lock according to claim 5, wherein the unlocking plate is slidably mounted on the lock housing assembly; the driving member is a driving gear; and the electric driving mechanism comprises: The transmission gear is rotatably mounted on the lock housing assembly, and the transmission gear includes a first bevel tooth and a first tooth meshed with the driving part; The drive motor has a second bevel tooth meshed with the first bevel tooth on the output shaft of the drive motor. 10. The lock according to claim 7, further comprising a control board for controlling the operation of the electric drive mechanism, the transmission mechanism further comprising a positioning assembly, the positioning assembly comprising: a positioning gear, which is rotatably mounted on the lock shell assembly and meshes with the driving member, and has a trigger portion on the positioning gear; The positioning sensor is arranged on the lock housing assembly and is electrically connected to the control board. The positioning sensor is used for sensing the triggering part, and the positioning sensor is a micro switch, a Hall switch or a photoelectric switch.

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