CN210798534U - Lock body unlocking mechanism - Google Patents

Abstract

The utility model discloses a lock body release mechanism, include: the self-locking device comprises a self-locking trigger block, a self-locking connecting rod, a connecting rod resetting mechanism, a main spring bolt resetting mechanism, a main spring bolt detection switch and a door lock state monitoring module; the self-locking connecting rod and the main lock tongue are provided with matched limiting structures; the self-locking connecting rod is connected to the self-locking trigger block through a connecting rod resetting mechanism, and the connecting rod resetting mechanism can provide restoring force for the self-locking connecting rod to be in limit fit with the main spring bolt; the main lock tongue resetting mechanism can provide outward extending restoring force for the main lock tongue; the main spring bolt detection switch can detect whether the main spring bolt is in a locked state or not, and can send a detection result to the door lock state monitoring module. The beneficial effects of the scheme are that: 1) the self-locking connecting rod and the main bolt groove are designed to prevent the bolt from popping out; 2) the locking and the popping are more effective, the stability of the product is improved, and the service time is longer; 3) the main spring bolt automatically pops out after the door is closed, so that the door is simple and convenient; 4) the spring bolt stretches out and retracts and is provided with a detection switch to form a closed loop, so that the safety is ensured.

Description

Lock body unlocking mechanism

Technical Field

The utility model relates to a lock body technical field, in particular to lock body release mechanism.

Background

As an intelligent household product, the intelligent door lock enters a developed express way, and the convenience, safety and technological sense of use of the intelligent door lock are gradually accepted and favored by consumers;

the self-eject lock body of the existing structure has the following problems:

1) the stability is poor, and the situation of locking is often caused;

2) the traditional lock body has no feedback link, so that a user cannot know the state condition of the door lock;

3) the probability of false-masking error bounce is high, namely, the detection tongue and the scissors tongue are simultaneously pressed and then simultaneously popped, and the main lock tongue is released;

4) the structure is complex, the cost is high, and the space is large;

5) the assembly is difficult and the stability is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a lock body unlocking mechanism, which can effectively lock the main lock tongue and improve the stability; the operation is simple, and the door is automatically locked; the spring bolt stretches out and retracts and is provided with a detection switch to form a closed loop, so that the safety is ensured.

In order to achieve the above object, the utility model provides a following technical scheme:

a lock body unlocking mechanism comprising: the self-locking device comprises a self-locking trigger block, a self-locking connecting rod, a connecting rod resetting mechanism, a main spring bolt resetting mechanism, a main spring bolt detection switch and a door lock state monitoring module;

the self-locking connecting rod and the main lock tongue are provided with matched limiting structures; the self-locking connecting rod is connected to the self-locking trigger block through the connecting rod resetting mechanism, and the connecting rod resetting mechanism can provide restoring force for the self-locking connecting rod to be in limit fit with the main spring bolt; the main lock tongue resetting mechanism can provide outward extending restoring force for the main lock tongue;

the main spring bolt detection switch can detect whether the main spring bolt is in a locked state or not, and can send a detection result to the door lock state monitoring module.

Preferably, the method further comprises the following steps:

a scissor tongue detection switch for detecting whether the scissor tongue is in a locked state;

a detection tongue detection switch for detecting whether the detection tongue is in a locked state; the scissor tongue detection switch and the detection tongue detection switch can send detection results to the door lock state monitoring module.

Preferably, the travel switch bracket is further included; the main lock tongue detection switch, the scissor tongue detection switch and/or the detection tongue detection switch are elastic sheet type contact switches and are assembled on the travel switch bracket through screws, and the travel switch bracket is fixedly arranged on a shell of the lock body;

the lock tongues in the locked state can respectively press the corresponding detection switches, and the lock tongues in the unlocked state can release the corresponding detection switches.

Preferably, the method further comprises the following steps: the scissors tongue support frame, the self-locking trigger block and the trigger block reset mechanism;

the self-locking trigger block has two states: in the first position, the self-locking trigger block enables the self-locking connecting rod to be in limit fit with the main lock tongue; in the second position, the self-locking trigger block enables the self-locking connecting rod to be separated from the limit fit with the main lock tongue;

the trigger block reset mechanism can provide restoring force for the self-locking trigger block to enable the self-locking trigger block to be tangential from a first position to a second position, the self-locking trigger block can be limited by the scissor tongue supporting frame in a pressed state at the first position, and the scissor tongue supporting frame in a completely ejected state can allow the self-locking trigger block to be cut to the second position.

Preferably, the limit structure includes:

the main lock tongue groove is formed in the main lock tongue;

the self-locking connecting rod sleeve is arranged at the tail end of the self-locking connecting rod and is in limit fit with the main spring bolt groove, and the self-locking connecting rod sleeve is in rolling friction fit with the main spring bolt groove.

Preferably, the self-locking trigger block at the second position can limit the retraction of the scissor tongue supporting frame, and the main lock tongue can only be in limit fit with the self-locking connecting rod in a fully retracted state;

the lock body unlocking mechanism further comprises: and the unlocking shifting block can cut the self-locking trigger block from the second position to the first position.

Preferably, the limit structure includes:

the main spring bolt limiting part is arranged on the main spring bolt;

the connecting rod limiting part is arranged on the self-locking connecting rod and is used for limiting and matching with the main spring bolt limiting part;

and under the state that the main lock tongue is completely retracted, the main lock tongue limiting part is positioned in the motion track of the connecting rod limiting part; and under the condition that the main spring bolt is not completely retracted, the motion tracks of the main spring bolt limiting part and the connecting rod limiting part are staggered.

Preferably, the unlocking shifting block is provided with an operation hole, the self-locking trigger block is provided with an operation column matched with the operation hole, and the unlocking shifting block can be matched with the operation column through the operation hole to drive the self-locking trigger block to move from a second position to a first position;

the unlocking shifting block is rotatably arranged on the shell of the lock body through a rotating shaft.

Preferably, the method further comprises the following steps: a clutch mechanism, the clutch mechanism comprising:

the clutch shell can rotationally stir the main spring bolt stirring mechanism;

the square shaft right driving block is rotatably matched with the inner side of the door of the clutch shell and is used for being matched with the inner handle of the door;

the limiting mechanism is fixed on the inner side of the door of the clutch shell and can prevent the right driving block of the square shaft from rotating;

the left driving block of the square shaft is rotatably matched with the outer side of the door of the clutch shell and is used for being matched with an outer handle of the door;

the clutch ejector pin can move in the hole of the clutch shell, can move to the first end of the clutch ejector pin along the hole to prevent the rotation of the square shaft left driving block, and is marked as a locking position; the clutch thimble can also move to the first end along the hole to allow the rotation of the square shaft left driving block, and the clutch thimble is marked as an idle rotation position;

and the thimble resetting mechanism is used for providing resetting force for the thimble of the clutch so as to keep the thimble in the idle running position.

Preferably, the limiting mechanism is a limiting screw, and the right driving block of the square shaft is provided with a hook matched with a nut of the limiting screw.

Preferably, the thimble return mechanism comprises: a clamp spring and a return spring;

the second end of the clutch thimble is provided with a clamping groove for assembling the clamp spring, the middle part of the clutch thimble is provided with a polished surface for sleeving the reset spring, one end of the reset spring is abutted against the first end of the clutch thimble, and the other end of the reset spring is clamped with the clamp spring.

Preferably, one of the inner wall of the clutch housing and the first end of the clutch thimble is provided with a protrusion along the radial direction of the clutch housing, and the other one is provided with a groove matched with the protrusion.

According to the above technical scheme, the utility model provides a lock body release mechanism, its beneficial effect is:

1) the self-locking connecting rod and the main bolt groove are designed to prevent the bolt from popping out;

2) the locking and the popping are more effective, the stability of the product is improved, and the service time is longer;

3) the main spring bolt automatically pops out after the door is closed, so that the door is simple and convenient;

4) the spring bolt stretches out and retracts and is provided with a detection switch to form a closed loop, so that the safety is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lock body unlocking mechanism provided in an embodiment of the present invention in an unlocked state;

fig. 2 is a schematic structural diagram of the lock body unlocking mechanism provided in the embodiment of the present invention in an unlocked state;

fig. 3 is a schematic structural diagram of a travel switch fixing manner provided by an embodiment of the present invention;

fig. 4 is a wiring diagram of a detection switch provided by the embodiment of the present invention;

fig. 5 is a schematic structural view of the main bolt provided in the embodiment of the present invention in an unlocked state;

fig. 6 is a schematic structural view of a locking mechanism of a scissor bolt according to an embodiment of the present invention;

fig. 7 is an exploded view of a clutch mechanism according to an embodiment of the present invention;

fig. 8 is a schematic view of an outdoor idle running according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a clutch lock position according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a clutch thimble according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a clutch housing according to an embodiment of the present invention;

wherein, 1 is a lower cover plate; 2 is a pressure spring support frame; 3 is a scissor tongue pressure spring; 4 is a scissor tongue support frame, and 4-1 is a first surface; 5 is a scissor tongue; 6 is a self-locking trigger block, and 6-1 is a second surface; 7 is a detecting tongue supporting frame; 8 is the detection tongue; 9 is a self-locking connecting rod, and 9-1 is a self-locking connecting rod sleeve; 10 is an unlocking shifting block; 11 is a main bolt shifting block; 12 is a main bolt, 12-1 is a main bolt groove; 13 is a side bar; 14 is the main bolt torsion spring; 15 is a main bolt shifting block torsion spring; 16 is a self-locking return spring; 17 is a self-locking spring;

21 is a square-axis left drive block;

20 is a clutch housing, 20-1 is a bone position of the clutch housing, and 20-2 is a hole of the clutch housing;

23 is a square shaft right driving block, 24 is a limit screw, and 25 is a clamp spring;

26 is a clutch thimble, 26-1 is a smooth surface of the clutch thimble, 26-2 is a clamping groove of the clutch thimble, and 26-3 is a sliding groove of the clutch thimble;

27 is a return spring, 28 is a motor module, and 29 is a motor shifting block;

32 is a main bolt detection switch, 33 is a main bolt travel switch bracket, 34 is a travel switch wire, 36 is a scissor bolt detection switch, 41 is a scissor bolt travel switch bracket, 42 is a bracket screw, 43 is a detection switch screw, and 44 is a detection bolt detection switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a lock body release mechanism, include: the lock comprises a self-locking trigger block 6, a self-locking connecting rod 9, a connecting rod resetting mechanism, a main bolt 12, a main bolt resetting mechanism, a main bolt detection switch 32 and a door lock state monitoring module, wherein the structure of the lock can be shown in figure 1, and all the parts are arranged in a shell (such as a lower cover plate 1) of the lock body;

the self-locking connecting rod 9 and the main bolt 12 are provided with matched limit structures; the self-locking connecting rod 9 is connected to the self-locking trigger block 6 through a connecting rod resetting mechanism, and the connecting rod resetting mechanism can provide restoring force for limiting and matching the self-locking connecting rod 9 with the main bolt 12; the main bolt resetting mechanism can provide outward extending restoring force for the main bolt 12;

the main bolt detection switch 32 can detect whether the main bolt 12 is in a locked state, and can send a detection result to the door lock state monitoring module to realize the door lock state detection.

It can be seen from the above technical solution that, in the lock body unlocking mechanism provided in the embodiment of the present invention, under the restoring force action of the link resetting mechanism, the self-locking link 9 can be in spacing fit with the main bolt 12, preventing the main bolt 12 from extending out, realizing locking of the main bolt 12, and improving stability; when the lock needs to be unlocked, the self-locking trigger block 6 drives the self-locking connecting rod 9 to move, so that the self-locking connecting rod 9 is separated from the limiting fit with the main lock tongue 12, and the main lock tongue 12 extends outwards under the action of the main lock tongue resetting mechanism to realize self-elastic unlocking;

meanwhile, the detection result of whether the main bolt 12 is locked or not can be output through the main bolt detection switch 32, and a feedback link is added, so that a user can conveniently learn the state condition of the door lock, and the safety is ensured.

As preferably, the embodiment of the utility model provides a lock body release mechanism still includes:

a scissor tongue detection switch 36 for detecting whether the scissor tongue 5 is in a locked state;

a detection tongue detection switch 44 for detecting whether the detection tongue 8 is in a locked state; the scissor tongue detection switch 36 and the detection tongue detection switch 44 can both send detection results to the door lock state monitoring module. The scheme also realizes the detection links of extension and retraction of the scissor tongues 5 and the detection tongues 8, forms a closed loop and ensures the safety. Main bolt 12, scissors tongue 5 and detection tongue 8 can remove about in lower apron 1 recess, make detection switch close repeatedly to with information propelling movement to APP, realize the switch logic.

Specifically, fig. 4 is a detection switch wiring diagram, the main bolt detection switch 32, the scissor bolt detection switch 36 and the detection bolt detection switch 44 share GND and are welded into a line, and the lock body and the panel are connected by a 4pin flat cable, so that the structure is compact.

When the door is opened, the main bolt detection switch 32 is turned on (0), the scissor bolt detection switch 36 is turned on (0), and the detection bolt detection switch 44 is turned on (0); in the closed state, the main tongue detection switch 32 is turned off (1), the scissors tongue detection switch 36 is turned off (1), and the detection tongue detection switch is turned off (1). The state change from door open to door closed is: 000 → 110 → 011, other state changes will feedback errors, which will remind the user.

Further, the embodiment of the utility model provides a lock body release mechanism still includes: a travel switch bracket; the main bolt detection switch 32, the scissor bolt detection switch 36 and/or the detection bolt detection switch 44 adopt spring piece type contact switches, and the structural design is simple; the travel switch bracket is assembled through screws, and the detection switch is fixed through the screws, so that the position is accurate and the reliability is high; the travel switch bracket is fixedly arranged on the shell of the lock body; here, the three detection switches are respectively assembled to the respective stroke switch brackets by screws; the travel switch selects a spring piece type contact switch, is directly screwed on the switch support, and has simple structural design, as shown in figure 3, wherein 5 is a shear tongue, 4 is a shear tongue support frame, 3 is a shear spring tongue pressure spring, 2 is a pressure spring support frame, 41 is a shear tongue travel switch support, 42 is a support screw, and 43 is a detection switch screw. The detection switches are assembled on the stroke switch bracket and then they are locked together on the lower cover plate 1.

The lock tongues in the locked state can respectively press the corresponding detection switches, and the lock tongues in the unlocked state can release the corresponding detection switches. In the position relation of the door opening state of fig. 1, the main bolt 12 presses the main bolt detection switch 32, the scissor bolt 5 presses the scissor bolt detection switch 36, and the detection bolt 8 presses the detection bolt detection switch 44; fig. 2 shows the position relationship of the door closing state, in which the main bolt 12 is turned off, the main bolt detection switch 32 is released and turned off, the scissor bolt 5 is extended after being pressed down, the scissor bolt detection switch 36 is kept unchanged, the detection bolt 8 is pressed down by the door frame, and the detection bolt detection switch 44 is released and turned off.

The embodiment of the utility model provides a lock body release mechanism still includes: the scissors tongue support frame 4 and the trigger block resetting mechanism are arranged in a shell (a lower cover plate 1) of the lock body;

the self-locking trigger block 6 has two states: in the first position, the self-locking trigger block 6 enables the self-locking connecting rod 9 to be in limit fit with the main bolt 12; in the second position, the self-locking trigger block 6 enables the self-locking connecting rod 9 to be separated from the limit fit with the main bolt 12; when the self-locking trigger block 6 is switched between the first position and the second position, the self-locking connecting rod 9 is driven to move, so that the self-locking connecting rod 9 and the main bolt 12 form limit fit or are separated from the limit fit;

the trigger block reset mechanism can provide restoring force for the self-locking trigger block 6 to enable the self-locking trigger block to be tangential to a second position from a first position, the scissor tongue support frame 4 in a pressing state (including a fully pressing state and a partially pressing state), namely a virtual covering state, can limit the self-locking trigger block 6 at the first position, and the scissor tongue support frame 4 in a fully ejecting state (namely a non-virtual covering state) can allow the self-locking trigger block 6 to be cut to the second position.

Fig. 1 is a schematic diagram of the locked state. During the closing of the door, the scissor tongues 5 and the detection tongue 8 are pressed simultaneously. When the scissor tongue 5 enters the doorframe to pop out, the self-locking trigger block 6 in fig. 2 moves upwards under the action of the trigger block reset mechanism, namely from the first position to the second position, so as to drive the self-locking connecting rod 9 to move together. When the self-locking connecting rod 9 is separated from the limit matching with the main bolt 12, the main bolt 12 automatically extends out under the action of the main bolt torsion spring 14, and the door closing action is completed.

According to the technical scheme, the lock body unlocking mechanism provided by the embodiment of the utility model has the advantages that the main bolt 12 automatically pops out after the door is closed, and the lock body unlocking mechanism is simple and convenient; when the scissor bolt 5 is pressed and then popped out incompletely, the main bolt 12 cannot be popped out, and the situation of false spring cannot be hidden; the assembly is simple, and the stability is better.

Preferably, the trigger block return mechanism is a self-locking return spring 16, which may be configured as shown in FIG. 1, oriented in the direction of movement of the self-locking trigger block 6 between the first and second positions. Specifically, when the self-locking trigger block 6 is at the first position, the self-locking return spring 16 is in a compressed state; when the self-locking trigger block 6 is at the second position, the self-locking return spring 16 is in an extended state. Further, the lock body unlocking mechanism further comprises a pressure spring support frame 2 used for installing a detection tongue support frame 7, a scissor tongue support frame 4 and a lock tongue pressure spring 3 thereof, and a self-locking reset spring 16 is installed on the pressure spring support frame 2. Namely, the installation structure of the self-locking return spring 16 is not separately arranged, but is integrated with the installation structure of the existing scissors tongue 5 and the existing detection tongue 8, so that the structure is simplified, and the assembly and maintenance are convenient.

In this embodiment, the link returning mechanism is a self-locking spring 17, and the structure thereof can be seen in fig. 5. The first end of the self-locking spring 17 is connected with the self-locking trigger block 6, and the other end is connected with the self-locking connecting rod 9. Preferably, the setting direction of the self-locking spring 17 is perpendicular to the movement direction of the main lock tongue 12, so that the movement direction of the self-locking connecting rod 9 is perpendicular to the movement direction of the main lock tongue 12, the spacing matching between the self-locking spring and the main lock tongue is improved, the effectiveness of releasing is improved, the false-occultation prevention effect is improved, and the product stability is improved. Further, the movement direction of the self-locking trigger block 6 is the same as that of the self-locking connecting rod 9, namely the self-locking return spring 16 is parallel to the self-locking spring 17, so that the effectiveness of limiting matching and releasing between the self-locking trigger block and the self-locking connecting rod is improved.

Specifically, limit structure includes:

a main bolt groove 12-1 arranged on the main bolt 12, the structure of which can be seen in fig. 5;

and the self-locking connecting rod sleeve 9-1 is arranged at the tail end of the self-locking connecting rod 9 and is in limit fit with the main bolt groove 12-1. In the locking process, the self-locking connecting rod 9 slides into the main bolt groove 12-1 under the action of the connecting rod resetting mechanism (specifically, the restoring force of the self-locking spring 17) to form a limiting effect. Of course, the limiting structure may also adopt a form of a hook, and the like, which is not described herein again.

In order to further optimize the technical scheme, the self-locking connecting rod sleeve 9-1 is in rolling friction fit with the main bolt groove 12-1, so that the self-locking connecting rod sleeve has a self-lubricating effect, the ejection effectiveness is improved, the product stability is improved, and the service life is longer.

Preferably, the scissor tongue support frame 4 is provided with a first surface 4-1, and the self-locking trigger block 6 is provided with a second surface 6-1 which is used for being in contact with the first surface 4-1 for limiting and matching. The scissor tongue supporting frame 4 and the self-locking trigger block 6 are in surface contact, so that the matching area can be enlarged, the ejection effectiveness is improved, and the product stability is improved. Furthermore, the first surface 4-1 is an inclined surface forming an acute angle with the moving direction of the scissor tongue support frame 4, and the second surface 6-1 is an inclined surface matched with the first surface 4-1 and forming an acute angle with the moving direction of the self-locking trigger block 6.

Specifically, the movement direction of the scissor tongue support frame 4 is perpendicular to the movement direction of the self-locking trigger block 6, so that the effectiveness of limiting matching and releasing between the scissor tongue support frame and the self-locking trigger block is improved. In the present embodiment, the movement directions of the scissor tongue support frame 4 and the self-locking trigger block 6 are both straight lines.

In order to further optimize the technical scheme, the self-locking trigger block 6 at the second position can limit the retraction of the scissor tongue support frame 4 to form a scissor tongue locking mechanism; the main bolt 12 can only be in limit fit with the self-locking connecting rod 9 in a fully retracted state;

the lock body unlocking mechanism further comprises: the unlocking shifting block 10 is used for switching the self-locking trigger block 6 from the second position to the first position through the unlocking shifting block 10. The structure of the self-locking trigger block can be shown in figure 6, and the self-locking trigger block 6 is contacted with the scissor tongue support frame 4 (specifically, the self-locking trigger block is contacted with the scissor tongue support frame through the second surface 6-1 and the first surface 4-1) to block the retraction of the scissor tongue 5. Through the arrangement, in the unlocking process, after the main bolt 12 is completely retracted, the self-locking trigger block 6 can be cut to the first position from the second position without limiting the retraction of the scissor bolt support frame 4, so that the scissor bolt 5 is released, and the living safety is ensured.

In this embodiment, the unlocking shifting block 10 is provided with an operation hole, the self-locking trigger block 6 is provided with an operation column matched with the operation hole, the unlocking shifting block 10 drives the self-locking trigger block 6 to move from the second position to the first position through the matching of the operation hole and the operation column, the structure is simple, and the matching is reliable. Specifically, the unlocking moving block 10 is rotatably installed in a housing (such as the lower cover plate 1) of the lock body through a rotating shaft, so that the same square shaft end and the key end are matched to perform unlocking action. The structure of which can be seen with reference to fig. 1.

Preferably, limit structure includes:

a main bolt limiting part arranged on the main bolt 12;

the connecting rod limiting part is arranged on the self-locking connecting rod 9 and is used for limiting and matching with the main lock tongue limiting part;

when the main lock tongue 12 is completely retracted, the main lock tongue limiting part is positioned in the motion track of the connecting rod limiting part, and in the locking process, the self-locking connecting rod 9 moves under the action of the connecting rod resetting mechanism to enable the connecting rod limiting part to be in limiting fit with the main lock tongue limiting part; when the main lock tongue 12 is not completely retracted, the motion tracks of the main lock tongue limiting part and the connecting rod limiting part are staggered, and at the moment, the other parts of the matching surface of the main lock tongue 12 and the self-locking connecting rod 9 except the main lock tongue limiting part cannot form limiting fit with the connecting rod limiting part, so that the self-locking trigger block 6 keeps the second position to limit the retraction of the scissor tongue supporting frame 4.

Specifically, the main lock tongue limiting part is the main lock tongue groove 12-1, and the connecting rod limiting part is the self-locking connecting rod sleeve 9-1, and the structure can refer to the above description. Correspondingly, under the condition that the main bolt 12 is completely retracted, the main bolt groove 12-1 is positioned in the motion track of the self-locking connecting rod sleeve 9-1, and at the moment, in the locking process, the self-locking connecting rod 9 slides into the main bolt groove 12-1 under the action of the connecting rod resetting mechanism to form a limiting effect;

when the main lock tongue 12 is not completely retracted, the movement tracks of the main lock tongue groove 12-1 and the self-locking connecting rod sleeve 9-1 are staggered, and at the moment, the other parts (which can be specifically planes) of the matching surface of the main lock tongue 12 and the self-locking connecting rod 9 except the main lock tongue groove 12-1 cannot form limit matching with the self-locking connecting rod sleeve 9-1, so that the self-locking trigger block 6 keeps the second position to limit the retraction of the scissor tongue supporting frame 4.

The present solution is further described below with reference to specific embodiments:

fig. 5 is a main bolt lock state. Wherein 17 is a self-locking spring, 9-1 is a self-locking connecting rod sleeve, and 12-1 is a main bolt groove. In the locking process, the self-locking connecting rod 9 slides into the main bolt groove 12-1 under the restoring force action of the self-locking spring 17 to form a limiting effect. The self-locking connecting rod sleeve 9-1 and the main bolt groove 12-1 are in rolling friction and have a self-lubricating effect.

Fig. 1 is a schematic diagram of the locked state. During the closing of the door, the scissor tongues 5 and the detection tongue 8 are pressed simultaneously. When the scissor tongue 5 enters the doorframe to pop out, the self-locking trigger block 6 in fig. 1 moves upwards under the action of the self-locking return spring 16, and drives the self-locking connecting rod 9 to move together. When the self-locking connecting rod 9 is separated from the main bolt groove 12-1, the main bolt 12 automatically extends out under the action of the spring to complete the door closing action.

Fig. 6 is a schematic view of the scissor latch locking mechanism. Wherein the second face 6-1 contacts the first face 4-1 to block retraction of the scissor tongue 5. In the unlocking process, the scissor bolt 5 is released after the main bolt 12 is completely retracted, so that the living safety is ensured.

The embodiment of the utility model provides a lock body release mechanism still includes: a clutch mechanism, the clutch mechanism comprising:

the clutch housing 20 can rotationally stir the main bolt stirring mechanism, so that the retraction of the main bolt is realized, and the door lock is opened;

a square shaft right driving block 23 rotatably engaged with the door inner side of the clutch housing 20 for engagement with the door inner handle; the outer side of the square shaft right driving block 23 is provided with a square shaft groove matched with a door inner handle, and the inner side of the square shaft right driving block is provided with a surface matched with the clutch shell 20 in a rotating way; the inner door handle can provide axial limit for the square shaft right driving block 23;

a limit mechanism fixed to the door inner side of the clutch housing 20, the limit mechanism being capable of preventing the rotation of the square-axis right drive block 23;

a left square shaft driving block 21 rotatably engaged with the outside of the door of the clutch housing 20 and engaged with the outside handle of the door; the outer side of the square shaft left driving block 21 is provided with a square shaft groove used for being matched with an outer door handle, and the inner side of the square shaft left driving block is provided with a surface used for being rotationally matched with the clutch shell 20; the door outer handle can provide axial limit for the square shaft left driving block 21; it can be understood that "left", "right", "inner" and "outer" in this scheme are for convenience of description and understanding of the relative position relationship of the two square shaft driving blocks, and do not limit the assembling manner and structure thereof, and the same is applied below;

a clutch pin 26 movably disposed in the hole 20-2 of the clutch housing 20, wherein the clutch pin 26 can move along the hole 20-2 to a first end of the clutch pin 26 to prevent the rotation of the left square-axis driving block 21, and is recorded as a locking position; the clutch thimble 26 can also move to a first end along the hole 20-2 to allow the rotation of the left driving block 21 of the square shaft, and is marked as an idle position;

and a reset mechanism for providing a reset force to the clutch needle 26 to keep the clutch needle in an idle position.

With the above structural design, as shown in fig. 1 and 7, the limiting mechanism is installed on the inner side of the door of the clutch housing 20, so that the door inner handle can drive the square shaft right driving block 23 to drive the clutch housing 20 to move together, and the rotary motion of the clutch housing 20 can drive the main bolt toggle mechanism to move, thereby realizing the retraction of the main bolt;

in the normal state outside the door, the clutch thimble 26 is in the drooping idle rotation position, the outside door handle drives the square shaft left driving block 21, the clutch housing 20 cannot be driven, and only the idle rotation is realized, as shown in fig. 8. Only the clutch thimble 26 is driven to retract, the door outer handle drives the square shaft left driving block 21, the clutch thimble 26 is firstly contacted in the movement process, and then the clutch shell 20 is driven to rotate, so that the retraction of the main bolt is realized, and the door inner handle is similar to the door opening, as shown in fig. 9.

According to the technical scheme, the clutch mechanism provided by the utility model drives the clutch shell 20 to rotate through the clutch thimble 26, so as to drive the movement of the main lock tongue toggle mechanism, and realize the extension and retraction movement of the main lock tongue; the mechanism is matched with the door inner handle and the door outer handle, can realize the separation of the drive of the door inner handle and the door outer handle, has modular design, occupies less space, and has simple structure and cost saving.

Preferably, the limiting mechanism is a limiting screw 24, so that the installation is convenient and the structure is firm; the right square-shaft driving block 23 has a hook for engaging with the nut of the limit screw 24, which helps to maintain the engagement relationship therebetween, enlarge the contact area, and improve the reliability of the limit, and the structure thereof can be seen in fig. 1 and 7.

In this embodiment, the return mechanism includes: a clamp spring 25 and a return spring 27, the structure of which can be seen in fig. 7 and 8;

the second end of the clutch thimble 26 has a slot 26-2 for assembling the snap spring 25, the middle of the clutch thimble 26 has a smooth surface 26-1 for sleeving the return spring 27, one end of the return spring 27 abuts against the first end of the clutch thimble 26, and the other end is snap-fitted with the snap spring 25, and the structure thereof can be seen in fig. 10. The return spring 27 is installed through the clamp spring 25 (preferably E-shaped), so that the structure is simple, and the cost is saved. Specifically, the first end of the clutch pin 26 is a large head structure, and the sectional dimension of the first end is larger than the radial dimension of the hole 20-2, so that the first end can provide installation limit for one end of the return spring 27 and also provide installation limit for the clutch pin 26, and the clutch pin is prevented from being pulled out of the hole 20-2.

In order to further optimize the above technical solution, one of the inner wall of the clutch housing 20 and the first end of the clutch needle 26 is provided with a protrusion along the radial direction of the clutch housing 20, and the other is provided with a groove matched with the protrusion. It will be appreciated that the radial direction of the clutch housing 20 is with respect to its rotational movement. Compared with the dotted line contact matching structure in the prior art, the clutch thimble 26 and the clutch shell 20 of the present embodiment have large surface contact, less wear and long service life.

Specifically, the inner wall of the clutch housing 20 is provided with a rib position 20-1 as the protrusion, and the first end of the clutch pin 26 is provided with a sliding groove 26-3 as the groove, which can be seen in fig. 10 and 11. In the moving process, the bone position 20-1 of the clutch shell moves in the sliding groove 26-3 of the clutch thimble without being inclined, so that the stability is improved.

The embodiment of the utility model provides a lock body clutching mechanism still includes and is used for ordering about clutch thimble 26 and moves to the drive module who pins the position to realize automatic control according to predetermineeing the instruction.

Preferably, the driving module includes:

a motor shifting block 29 for shifting the clutch thimble 26, the structure of which can be seen in fig. 8;

and a motor module 28 for driving the motor dial block 29. Only after the motor rotates, the motor shifting block 29 moves upwards to retract the clutch thimble 26, the door outer handle drives the square shaft left driving block 21 to firstly contact the clutch thimble 26 in the movement process, and then the clutch shell 20 is driven to rotate, so that the retraction of the main lock tongue is realized, and the door inner handle is similar to the door opening.

In order to further optimize the above technical solution, the clutch housing 20 has a hook for matching with the main bolt toggle mechanism, which is helpful to maintain the matching relationship between the two, enlarge the contact area, and improve the toggle reliability, and the structure thereof can be shown in fig. 1, 7-9. In this embodiment, the main bolt toggle mechanism includes: main bolt shifting block 11.

Specifically, the first end of the clutch pin 26 in the lock position can also prevent the rotation of the square-shaft right driving block 23, and the first end of the clutch pin 26 in the idle position can also allow the rotation of the square-shaft right driving block 23. The inner door handle can also be matched with the outer door handle and the clutch thimble 26, so that the operation is convenient.

The embodiment of the utility model provides a lock body is still provided, including clutching mechanism, this clutching mechanism is foretell lock body clutching mechanism. The inner door handle is matched with the square shaft groove of the square shaft right driving block 23 to provide axial limit; the outer handle of the door is matched with the square shaft groove of the square shaft left driving block 21 to provide axial limiting.

The present solution is further described below with reference to specific embodiments:

figure 7 is an exploded view of the lock body clutching mechanism. The limit screw 24 is installed in the door, so that the handle in the door can drive the square shaft right driving block 23 to drive the clutch housing 20 to move together, and the rotation motion of the clutch housing 20 can drive the main bolt shifting block 10 to move, thereby realizing the retraction of the main bolt and opening the door lock, as shown in fig. 1.

In the normal state outside the door, the clutch thimble 26 drops, and the outside door handle drives the left driving block 21 of the square shaft, so that the clutch housing 20 cannot be driven, and only can idle, as shown in fig. 8. Only after the motor rotates, the motor shifting block 29 moves upwards, the clutch thimble 26 retracts, the handle drives the square shaft driving block, the square shaft driving block is firstly contacted with the clutch thimble 26 in the motion process, and then the clutch shell 20 is driven to rotate, so that the retraction of the main bolt is realized, and the door opening is similar to the door opening of the handle in the door, as shown in fig. 9.

Installation of the clutch: firstly, the clutch thimble 26 is arranged in the hole 20-2 of the clutch shell, the reset spring 27 is sleeved in the smooth surface 26-1 of the thimble, then the clamp spring 25 is assembled in the clamping groove 26-2 of the thimble, and finally the left and right driving blocks are arranged to finish the assembly. In the movement process, the bone position 20-1 of the clutch shell moves in the sliding groove 26-3 of the clutch thimble without being inclined.

To sum up, the embodiment of the utility model discloses a lock body clutch mechanism, which drives the clutch shell to rotate through the clutch thimble, further drives the movement of the main lock tongue toggle mechanism, and realizes the extension and retraction movement of the main lock tongue; the mechanism is matched with the inner door handle and the outer door handle, so that the driving separation of the inner door handle and the outer door handle can be realized, the modular design is realized, and the occupied space is small; the assembly is simple, and the cost is saved; large surface contact, less abrasion and long service life.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A lock body unlocking mechanism, comprising: the door lock comprises a self-locking trigger block (6), a self-locking connecting rod (9), a connecting rod resetting mechanism, a main bolt (12), a main bolt resetting mechanism, a main bolt detection switch (32) and a door lock state monitoring module;

the self-locking connecting rod (9) and the main bolt (12) are provided with matched limiting structures; the self-locking connecting rod (9) is connected to the self-locking trigger block (6) through the connecting rod resetting mechanism, and the connecting rod resetting mechanism can provide restoring force for limiting and matching with the main lock tongue (12) for the self-locking connecting rod (9); the main bolt resetting mechanism can provide outward extending restoring force for the main bolt (12);

the main bolt detection switch (32) can detect whether the main bolt (12) is in a locked state or not, and can send a detection result to the door lock state monitoring module.

2. The lock body unlocking mechanism according to claim 1, further comprising:

a scissor tongue detection switch (36) for detecting whether the scissor tongue (5) is in a locked state;

a detection tongue detection switch (44) for detecting whether the detection tongue (8) is in a locked state; the scissor tongue detection switch (36) and the detection tongue detection switch (44) can send detection results to the door lock state monitoring module.

3. The lock body unlocking mechanism according to claim 2, further comprising: a travel switch bracket; the main bolt detection switch (32), the scissors bolt detection switch (36) and/or the detection bolt detection switch (44) adopt a spring plate type contact switch and are assembled on the travel switch bracket through screws, and the travel switch bracket is fixedly arranged on the shell of the lock body;

the lock tongues in the locked state can respectively press the corresponding detection switches, and the lock tongues in the unlocked state can release the corresponding detection switches.

4. The lock body unlocking mechanism according to claim 1, further comprising: a scissor tongue support frame (4) and a trigger block reset mechanism;

the self-locking trigger block (6) has two states: in the first position, the self-locking trigger block (6) enables the self-locking connecting rod (9) to be in limit fit with the main bolt (12); in the second position, the self-locking trigger block (6) enables the self-locking connecting rod (9) to be separated from the limit matching with the main lock tongue (12);

the trigger block reset mechanism can provide restoring force for the self-locking trigger block (6) to enable the self-locking trigger block to be tangential from a first position to a second position, the shear tongue support frame (4) in a pressed state can limit the self-locking trigger block (6) at the first position, and the shear tongue support frame (4) in a completely ejected state can allow the self-locking trigger block (6) to be cut to the second position.

5. The lock body unlocking mechanism according to claim 1, wherein the stopper structure includes:

a main bolt groove (12-1) arranged on the main bolt (12);

the self-locking connecting rod sleeve (9-1) is arranged at the tail end of the self-locking connecting rod (9) and is in limit fit with the main bolt groove (12-1), and the self-locking connecting rod sleeve (9-1) is in rolling friction fit with the main bolt groove (12-1).

6. The lock body unlocking mechanism according to claim 4, characterized in that the self-locking trigger block (6) in the second position can limit the retraction of the scissor tongue support frame (4), and the main locking tongue (12) can only be in limit fit with the self-locking connecting rod (9) in the fully retracted state;

the lock body unlocking mechanism further comprises: the unlocking shifting block (10), and the self-locking trigger block (6) can be switched to the first position from the second position by the unlocking shifting block (10).

7. The lock body unlocking mechanism according to claim 6, wherein the stopper structure includes:

the main lock tongue limiting part is arranged on the main lock tongue (12);

the connecting rod limiting part is arranged on the self-locking connecting rod (9) and is used for limiting and matching with the main spring bolt limiting part;

and under the state that the main lock tongue (12) is completely retracted, the main lock tongue limiting part is positioned in the motion track of the connecting rod limiting part; and under the condition that the main lock tongue (12) is not completely retracted, the motion tracks of the main lock tongue limiting part and the connecting rod limiting part are staggered.

8. The lock body unlocking mechanism according to claim 6, characterized in that the unlocking shifting block (10) is provided with an operation hole, the self-locking trigger block (6) is provided with an operation column matched with the operation hole, and the unlocking shifting block (10) can be matched with the operation column through the operation hole to drive the self-locking trigger block (6) to move from the second position to the first position;

the unlocking shifting block (10) is rotatably arranged on the shell of the lock body through a rotating shaft.

9. The lock body unlocking mechanism according to claim 1, further comprising: a clutch mechanism, the clutch mechanism comprising:

the clutch housing (20), the said clutch housing (20) can rotate and stir the toggle mechanism of the main lock tongue;

the square shaft right driving block (23) is rotatably matched with the inner side of the door of the clutch shell (20) and is used for being matched with the inner handle of the door;

the limiting mechanism is fixed on the inner side of the door of the clutch housing (20) and can prevent the square shaft right driving block (23) from rotating;

the left driving block (21) is rotatably matched with the outer side of the door of the clutch shell (20) and is used for being matched with an outer handle of the door;

the clutch ejector pin (26) is movably arranged in a hole (20-2) of the clutch housing (20), and the clutch ejector pin (26) can move to the first end of the clutch ejector pin (26) along the hole (20-2) to prevent the rotation of the square shaft left driving block (21), and is recorded as a locking position; the clutch thimble (26) can also move to the first end along the hole (20-2) to allow the rotation of the square shaft left driving block (21), and is marked as an idle rotation position;

and the thimble resetting mechanism is used for providing resetting force for the clutch thimble (26) to keep the thimble in the idle position.

10. The lock body unlocking mechanism according to claim 9, wherein the limiting mechanism is a limiting screw (24), and the square shaft right driving block (23) has a hook for cooperating with a nut of the limiting screw (24).

11. The lock body unlocking mechanism of claim 9, wherein said ejector pin resetting mechanism includes: a clamp spring (25) and a return spring (27);

the second end of the clutch thimble (26) is provided with a clamping groove (26-2) for assembling the clamp spring (25), the middle part of the clutch thimble (26) is provided with a smooth surface (26-1) for sleeving the reset spring (27), one end of the reset spring (27) is abutted to the first end of the clutch thimble (26), and the other end of the reset spring is clamped with the clamp spring (25).

12. The lock body unlocking mechanism according to claim 9, wherein one of the inner wall of the clutch housing (20) and the first end of the clutch thimble (26) is provided with a projection in a radial direction of the clutch housing (20), and the other is provided with a recess engaged with the projection.

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