CN210217410U

CN210217410U - Lock core

Info

Publication number: CN210217410U
Application number: CN201920849616.4U
Authority: CN
Inventors: Xiasen Lin; 林夏森
Original assignee: Zhejiang Sanmu Intelligent Technology Co Ltd
Current assignee: Zhejiang Sanmu Intelligent Technology Co Ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-03-31
Anticipated expiration: 2029-06-05

Abstract

The utility model provides a lock core belongs to lock technical field. The problem of its solution is the arduous technical problem of closing the door when improving unblock stability. This lock core sets up the elasticity tongue pole subassembly on the lock shell including locking the shell and all sliding, main spring bolt and elasticity locking subassembly, be provided with the through-hole that enables the inner of elasticity tongue pole subassembly to pass on the elasticity locking subassembly, the elasticity locking subassembly slides and makes through-hole and elasticity tongue pole subassembly stagger to main spring bolt under self elastic action, be equipped with on the elasticity locking subassembly and rotate the piece that can rotate, it supports the face to rotate the piece outside and be equipped with the circular arc, it is located elasticity tongue pole subassembly inner end department to support the face to support the circular arc on the piece after through-hole and elasticity tongue pole subassembly stagger, can promote elasticity locking subassembly reverse slip and make elasticity tongue pole subassembly inner support along the circular arc during the unblock and support the face and lead-in to. The lock core has the advantages of improving the unlocking stability, being light and labor-saving when the door is closed, simplifying the structure and the like.

Description

Lock core

Technical Field

The utility model belongs to the technical field of the lock, a lock core is related to.

Background

The mortise lock is composed of a lock body bottom shell, a dead bolt assembly, an inclined bolt assembly, an opening mechanism of the dead bolt assembly and the inclined bolt assembly, the dead bolt assembly can be screwed out by using a key after a traditional mortise lock is closed, so that the dead bolt assembly is locked, and the purpose of completely locking the mortise lock is further achieved.

For example, the application No. 201811599916.8 discloses an anti-rebounding electromechanical automatic lock, which comprises an installation bottom plate, a locking panel arranged on one side of the installation bottom plate, a main lock tongue arranged on the installation bottom plate, an oblique lock tongue assembly and a bidirectional assembly; the bidirectional tongue assembly comprises a bidirectional slide block, a first inclined tongue, a second inclined tongue and a bidirectional tongue rod, wherein the bidirectional slide block is slidably connected to the mounting bottom plate; the mounting bottom plate is provided with a locking assembly for locking the bidirectional tongue assembly; the locking subassembly includes sliding connection in the transmission piece of two-way tongue pole below, articulate trigger on mounting plate and detain and the drive piece, be provided with the transmission pressure spring between keeping away from the one end that the trigger was detained on the transmission piece and the mounting plate, be provided with the perforation that supplies two-way tongue pole to pass on the transmission piece, trigger and detain the two-way tongue separation blade that is provided with slant downwardly extending to two-way tongue slider bottom, the one end that the trigger was detained is provided with the promotion portion with transmission piece lateral wall looks butt, thereby the trigger is detained and is provided with the spacing portion that can be supported restriction turned angle by the tip of drive piece towards one side of drive piece, trigger is detained and is provided with the extruded plectrum torsional.

The working process of the anti-rebound electromechanical automatic lock is approximately as follows: in the initial state, the shifting piece spring drives the trigger buckle to rotate and extrude the transmission block, so that the through hole in the transmission block is aligned with the bidirectional tongue rod; when the door body is closed, the first latch bolt and the second latch bolt are extruded inwards by the door frame and drive the bidirectional latch bolt rod to penetrate through the through hole on the transmission block, and then the bidirectional latch bolt sliding block is contacted with the bidirectional latch bolt blocking piece and is extruded downwards to enable the trigger buckle to rotate, so that the pushing part and the transmission block are far away from each other; when the door body is completely closed, the bidirectional tongue sliding block moves towards the direction of the locking panel, and the limiting part of the trigger buckle is arranged on the end part of the transmission piece and cannot be reset, so that the transmission piece can move towards the direction of the trigger buckle under the action of the transmission pressure spring, the through holes and the bidirectional tongue rods are staggered with each other, and the door body is prevented from rebounding.

However, the above-mentioned anti-rebound electromechanical automatic lock also has some disadvantages: when the unblock, it rotates and promotes the driving block to drive the trigger button by the plectrum torsional spring, the driving block can overcome the effort of transmission pressure spring and remove the perforation and the two-way tongue pole alignment on the driving block and realize the unblock, but the user exerts thrust or pulling force on the lock and makes two-way tongue pole atress top all the time on the driving block when actually unblock, the torsion that only relies on the plectrum torsional spring is in fact not enough to guarantee that the driving block can both overcome the transmission pressure spring and the frictional force between two-way tongue pole and the driving block and remove at every turn, in case the driving block can't be promoted just can cause two-way tongue pole to be blocked and can't realize normal unblock, unblock stability is not enough promptly.

Because the torsion of plectrum torsional spring is the direct power that promotes the transmission piece and carry out the unblock, consequently when solving the technical problem that leads to unblock stability not enough because of plectrum torsional spring torsion not enough, the conventional technological means of technical staff in the field is the torsion that directly increases the plectrum torsional spring, but need promote the trigger when two-way tongue subassembly is initial to contract and detain the rotation so that the promotion portion and the transmission piece separation on the trigger is detained, trigger when the torsion increase of plectrum torsional spring detains and can form bigger resistance to the internal contraction of two-way tongue subassembly, thereby lead to the user to need exert bigger thrust or resistance and just can normally close the door, do not like ordinary lock core as light, consequently, have when closing the door more difficultly, unpractical defect.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide an unlocking mechanism of tongue subassembly in lock core, solved and closed the door hard technical problem when improving unblock stability.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a lock core, sets up elasticity tongue pole subassembly, main spring bolt and elasticity locking subassembly on the lock shell including locking the shell and all sliding, is provided with the through-hole that enables the inner of elasticity tongue pole subassembly to pass on the elasticity locking subassembly, and the elasticity locking subassembly slides and makes through-hole and elasticity tongue pole subassembly stagger to main spring bolt under self elasticity effect, its characterized in that, be equipped with on the elasticity locking subassembly and rotate the piece that can rotate, rotate the piece outside and be equipped with the circular arc and lean on the face, rotate the circular arc on the piece and lean on face to be located elasticity tongue pole subassembly inner end department after the through-hole staggers with elasticity tongue pole subassembly, can promote elasticity locking subassembly reverse slip and make elasticity tongue pole subassembly inner lean on the face to lead-in to the through-hole along the.

When the door is initially closed, the elastic tongue rod assembly is pressed by the door frame to retract into the lock shell, and the inner end of the elastic tongue rod assembly penetrates through the through hole in the elastic locking assembly. The back in the door embedding door frame, elasticity tongue pole subassembly reexpels the lock shell under self elasticity again and inserts the inslot that corresponds on the door frame, and elasticity locking subassembly slides and makes through-hole and elasticity tongue pole subassembly stagger to main spring bolt under self elasticity effect simultaneously, and the circular arc of rotating the piece supports to lean on the face to be located the interior end department of elasticity tongue pole subassembly, and elasticity locking subassembly keeps motionless this moment, and elasticity locking subassembly carries out the locking from this to elasticity tongue pole subassembly in order to prevent elasticity tongue pole subassembly rebound internal contraction. After the elastic bolt rod assembly is locked, the main bolt slides out of the lock shell and is inserted into a corresponding groove on the door frame to realize complete locking.

When unlocking, a user applies pushing or pulling force on the handle of the door lock, so that the main bolt retracts firstly and then the elastic bolt rod assembly retracts. The main lock tongue contracts and drives the elastic locking assembly to reversely slide, so that relative movement can be generated between the rotating piece and the elastic tongue rod assembly on the elastic locking assembly, the inner end of the elastic tongue rod assembly is pressed by user acting force and is abutted against the circular arc outside the rotating piece to abut against the surface, so that the rotating piece can rotate under the action of friction force, the inner end of the elastic tongue rod assembly can abut against the surface along the circular arc to move and lead into the through hole, and the elastic tongue rod assembly retracts into the lock shell to realize complete unlocking.

The retraction of the main lock tongue is realized by the driving of a motor or the manual unlocking of a user, so that the retraction force of the main lock tongue is very stable and is far greater than the elastic force of a plectrum torsion spring in the existing lock cylinder, and the retraction force of the main lock tongue is taken as the driving force of the elastic locking assembly, so that the unlocking stability of the elastic locking assembly can be greatly improved. However, since the elastic tongue bar assembly is always pressed by the pushing or pulling force of the user when unlocking, the friction between the elastic locking assembly and the elastic locking bar becomes larger and is more difficult to push only by the pushing force of the main lock tongue, for this reason, the inner end of the elastic tongue bar assembly abuts against the arc abutting surface of the rotating piece by arranging the rotating piece capable of rotating on the elastic locking assembly, so that the elastic tongue bar assembly can be normally locked, and the main bolt only needs to slightly push the elastic locking component to lead the rotating piece to rotate under the action of friction force, so that rolling friction is formed between the elastic tongue bar component and the rotating component, thereby greatly reducing the friction force between the elastic tongue bar component and the elastic locking component, so as to ensure that the elastic locking assembly can slide under the pushing of the main bolt to unlock the elastic bolt rod assembly.

In addition, the elastic tongue bar component pushes the elastic locking component to reversely slide to realize unlocking when the main spring bolt retracts, the retraction of the main spring bolt occurs in the unlocking stage of the lock cylinder, and the retraction of the elastic tongue bar component occurs in the door closing stage, so that the resistance of the elastic tongue bar component during retraction is not increased, and the lock cylinder can be light and labor-saving as a common lock cylinder during door closing.

In the lock core, the elastic locking assembly is provided with a positioning groove, the positioning groove and the through hole are arranged in the same direction, the positioning groove and the through hole are partially overlapped, and the rotating piece is positioned in the positioning groove.

Set up the constant head tank that the direction is the same with the through-hole is seted up to the elasticity locking subassembly, constant head tank and through-hole part coincidence just rotate the piece and be located the constant head tank, rotate the piece just like this and just be located near through-hole department. So long as under the condition that the main spring bolt pushes the elastic locking component to slide reversely slightly, the inner end of the elastic tongue bar component can move along the arc abutting surface on the rotating component and directly pass through the through hole, and the lock cylinder can stably unlock the elastic tongue bar component.

In the lock core, the rotating part is a roller, the two ends of the rotating part are provided with the positioning raised heads, the inner wall of the positioning groove is provided with two notches, the two positioning raised heads are respectively positioned in the two notches, and the arc abutting surface is part of the outer peripheral surface of the roller.

In foretell lock core, as another kind of technical scheme, rotate the piece and be the ball, the ball cover is on the reference column, and the constant head tank inner wall is equipped with two notches, and the reference column both ends are located two notches respectively, and the circular arc supports the partial surface that the face is the ball.

When the elastic locking assembly locks the elastic tongue bar assembly, the inner end of the elastic tongue bar assembly abuts against the outer peripheral surface of the roller/the outer surface of the ball. When the main lock tongue retracts to push the elastic locking assembly to slide reversely, the roller/ball rotates due to the friction force between the elastic tongue bar assembly and the roller/ball, so that rolling friction is formed between the elastic tongue bar assembly and the roller/ball, the resistance of the main lock tongue to push the elastic locking assembly to slide reversely is greatly reduced, and the unlocking stability is ensured.

In the lock core, a supporting plate is fixed in the lock shell, the elastic tongue rod assembly comprises a bidirectional tongue rod arranged in a sliding mode and a supporting spring sleeved on the bidirectional tongue rod, the supporting plate is located at the outer port of the through hole and the positioning groove and shields the rotating piece, a guide hole enabling the inner end of the bidirectional tongue rod to penetrate through is formed in the supporting plate, and two ends of the supporting spring respectively act on the supporting plate and the bidirectional tongue rod.

When the elastic tongue rod assembly is not locked by the elastic locking assembly, the through hole in the elastic locking assembly is right opposite to the guide hole, and the rotating piece is shielded by the supporting plate. When the elastic locking assembly slides to lock the elastic tongue rod assembly, the rotating piece moves to a position opposite to the guide hole, and the rotating piece abuts against the inner end of the bidirectional tongue rod to support the bidirectional tongue rod.

Because rotate the piece and locate in the constant head tank, and the lock core is all side direction installation, consequently utilizes the backup pad to shelter from rotating the piece, prevents to rotate to deviate from in the constant head tank when not locking elasticity tongue pole subassembly, has guaranteed the reliability of this lock core when improving unblock stability. Moreover, the supporting plate is of an existing structure in the lock core, the supporting plate is adopted to shield the rotating piece, the dual-purpose effect of one object can be achieved, and the structure is well simplified.

In foretell lock core, elasticity locking subassembly includes the drive block of sliding connection in the lock shell and locates the locking spring between lock shell inner wall and the drive block, rotates the piece and locates on the drive block, and drive block is close to main spring bolt one end and can form between the main spring bolt when the main spring bolt retracts and promote the coupling mechanism that the drive block slided in the opposite direction between the main spring bolt.

When the main lock tongue retracts, a connecting mechanism is formed between one end, close to the main lock tongue, of the transmission block and the main lock tongue, and the main lock tongue can directly push the transmission block to reversely slide through the connecting mechanism. The connecting mechanism enables the main bolt to be in rigid contact with the transmission block, so that rigid unlocking of the elastic locking assembly is realized, and the unlocking stability of the elastic locking assembly is well improved.

In the lock core, the coupling mechanism comprises a collision sheet hinged to one end of the transmission block close to the main lock tongue, an elastic reset piece capable of enabling the collision sheet to swing towards the direction close to the main lock tongue all the time is arranged between the transmission block and the collision sheet, when the elastic locking assembly slides towards the main lock tongue, the collision sheet abuts against the main lock tongue and swings towards the direction far away from the main lock tongue, and when the main lock tongue retracts, the collision sheet abuts against the collision sheet and pushes the transmission block to move reversely.

When the elastic locking assembly moves towards the main spring bolt under the action of the elastic force of the elastic locking assembly and locks the elastic spring bolt rod assembly, the collision sheet abuts against the side part of the main spring bolt, and the main spring bolt is fixed at the moment, so that the collision sheet can overcome the elastic force of the elastic resetting piece and swing towards the direction far away from the main spring bolt. Then, the main bolt extends out, the main bolt does not press the touch piece any more, the touch piece resets under the elasticity of the elastic reset piece, and the touch piece is located on the retraction path of the main bolt. When the lock is unlocked, the main spring bolt firstly retracts into the lock shell, the collision sheet is positioned on the retraction path of the main spring bolt, and then the main spring bolt abuts against the collision sheet and pushes the transmission block to reversely slide so as to release the locking of the elastic spring bolt rod assembly.

Through articulating the striking plate on the transmission block, the effect of utilizing the main lock tongue to retract and carrying out rigid unlocking on the elastic tongue rod assembly is achieved, and meanwhile, the arrangement of the striking plate cannot influence the normal locking of the elastic locking assembly on the elastic tongue rod assembly and the normal extension of the main lock tongue.

In the lock core, the transmission block is provided with a stopping part, the stopping part is provided with an inclined stopping surface, the stopping surface is arranged back to the main lock tongue, and the collision sheet is propped against the stopping surface under the elasticity of the elastic resetting piece.

The collision sheet is propped against the stop surface under the elasticity of the elastic reset piece, and the collision sheet is prevented by the stop surface from swinging in the direction close to the main spring bolt and is connected with the transmission block into a whole in the state, so that when the main spring bolt retracts and is propped against the collision sheet, the transmission block can be directly pushed to reversely slide so as to stably unlock the elastic spring bolt rod assembly.

In the lock core, the side part of the touch piece is provided with a first abutting surface and a second abutting surface which form an acute angle or a right angle, the first abutting surface abuts against the stopping surface, the connecting mechanism further comprises a connecting part of one side wall of the main lock tongue close to the transmission block and the inner end surface of the main lock tongue, and when the main lock tongue retracts, the connecting part of one side wall of the main lock tongue close to the transmission block and the inner end surface of the main lock tongue can move along the second abutting surface.

When the main bolt retracts, the connecting position of one side wall of the main bolt close to the transmission block and the inner end face of the main bolt can be abutted against the abutting surface II, the collision sheet is abutted against the abutting surface I and the abutting surface and is connected with the transmission block into a whole, therefore, the main bolt can move along the abutting surface II in the process of further retracting the main bolt, the connecting position of one side wall of the main bolt close to the transmission block and the inner end face of the main bolt is connected, the action force is transmitted to the hinge point of the collision sheet by the abutting surface II, the transmission block is directly pushed to slide in the direction far away from the main bolt, and the stability of unlocking the elastic bolt rod assembly by rigidity is improved.

In foretell lock core, coupling mechanism is including locating the driving block and being close to the portion of supporting that leans on and articulate the driving lever on main spring bolt of main spring bolt one end, the driving lever stretches out one side that main spring bolt is close to the driving block, be equipped with spacing face on the main spring bolt, be equipped with between driving lever and the main spring bolt and enable the driving lever to swing to the torsional spring that supports on spacing face to main spring bolt outer end direction all the time, support to lean on the position to be close to one side of main spring bolt outer end to the driving lever after elasticity locking subassembly slides to main spring bolt, support to be equipped with the inclined plane in the portion, driving lever tip can move and promote.

The elastic locking assembly moves towards the main lock tongue under the action of the elastic force of the elastic locking assembly, and after the elastic tongue rod assembly is locked, the elastic locking assembly is abutted to one side of the driving lever, which is close to the outer end of the main lock tongue. When the main spring bolt extends out, the deflector rod is abutted against the abutting part, the transmission block is kept still, so that the deflector rod swings towards the inner end direction of the main spring bolt, and the main spring bolt can smoothly extend out of the lock shell without being blocked by the abutting part. When the main spring bolt retracts, the end part of the shifting lever abuts against the inclined surface on the abutting part, and the shifting lever and the main spring bolt are connected into a whole because the swinging of the shifting lever is stopped by the limiting surface, so that the main spring bolt can apply acting force on the transmission block through the shifting lever, and the end part of the shifting lever can move along the inclined surface on the abutting part to push the transmission block to slide reversely. Through the driving lever and lean on the portion of leaning on the slope counterbalance and lean on, realized when the main bolt contracts back to the rigidity unblock of elasticity locking subassembly, improved the stability of unblock.

Compared with the prior art, the lock core has the following advantages:

1. when the main bolt retracts, the transmission block is pushed to slide reversely by the coupling mechanism formed between the main bolt and the transmission block, so that the rigid unlocking of the elastic bolt rod assembly is realized, the unlocking force is larger, and the unlocking stability is improved;

2. the retraction of the main bolt occurs in the unlocking stage of the lock core and the retraction of the elastic tongue bar component occurs in the door closing stage, so that the resistance of the elastic tongue bar component during retraction is not increased, and the lock core can be light and labor-saving as a common lock core during door closing;

3. the elastic locking component is provided with the rotating component with the arc abutting surface, so that rolling friction can be formed between the elastic tongue rod component and the rotating component when the main spring bolt pushes the transmission block to reversely slide, and the resistance when the main spring bolt pushes the transmission block to reversely slide is greatly reduced;

4. the existing supporting plate in the lock cylinder is utilized to shield the rotating part, so that the dual-purpose function of one object is achieved, and the structure is simplified.

Drawings

Fig. 1 is a schematic view of the present lock cylinder.

FIG. 2 is a schematic view of an elastic locking assembly according to one embodiment.

FIG. 3 is another perspective view of the spring locking assembly according to one embodiment.

Fig. 4 is an exploded view of the resilient locking assembly of one embodiment.

FIG. 5 is a schematic view of a support plate and a resilient locking assembly according to one embodiment.

Fig. 6 is a schematic view of the elastic locking assembly locking the elastic tongue bar assembly (the main bolt is not extended) in the first embodiment.

Fig. 7 is a schematic view of the elastic locking assembly locking the elastic tongue bar assembly (extending the main bolt) according to the first embodiment.

Fig. 8 is a schematic view illustrating the main bolt retracting to unlock the elastic bolt bar assembly according to the first embodiment.

Fig. 9 is an enlarged view at a in fig. 8.

FIG. 10 is a schematic view of the bi-directional tongue and the rotor with the resilient tongue assembly unlocked according to one embodiment.

FIG. 11 is a schematic view of the bi-directional tongue and the rotating member when the resilient tongue assembly is locked according to an embodiment.

FIG. 12 is a schematic view of the two-way latch and the rotating member after the elastic latch assembly is unlocked according to an embodiment.

In the drawings, 1, a lock shell; 2. an elastic tongue bar assembly; 21. a bi-directional tongue bar; 22. a support spring; 3. a main bolt; 4. an elastic locking assembly; 41. a rotating member; 411. a circular arc abutting surface; 412. positioning the raised head; 42. a transmission block; 421. a through hole; 422. positioning a groove; 423. a recess; 424. positioning the head; 425. a stopper portion; 4251. a stop surface; 426. a limiting block; 43. a locking spring; 5. a support plate; 51. a guide hole; 6. collision sheets; 61. a first abutting surface; 62. a second abutting surface; 7. an elastic reset member; 8. and a limiting screw.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, a lock core includes a lock case 1, an elastic tongue rod assembly 2, a main bolt 3 and an elastic locking assembly 4, wherein the elastic tongue rod assembly 2, the main bolt 3 and the elastic locking assembly 4 are all slidably disposed on the lock case 1, the main bolt 3 is disposed on one side of the elastic tongue rod assembly 2, and the sliding directions of the main bolt and the elastic locking assembly are the same, the elastic locking assembly 4 is disposed at the inner end of the elastic tongue rod assembly 2, and the sliding direction of the elastic locking assembly 4 is perpendicular to the sliding direction of the elastic tongue rod assembly 2.

As shown in fig. 1 and 5, the elastic tongue rod assembly 2 includes a bidirectional tongue rod 21 slidably disposed in the lock case 1 and a supporting spring 22 sleeved on the bidirectional tongue rod 21, a supporting plate 5 is fixed in the lock case 1, two ends of the supporting spring 22 respectively abut against the supporting plate 5 and the bidirectional tongue rod 21, an outer end of the bidirectional tongue rod 21 always tends to extend out of the lock case 1 under the elastic force of the supporting spring 22, and a guiding hole 51 for the inner end of the bidirectional tongue rod 21 to pass through is disposed on the supporting plate 5. In the present embodiment, the support plate 5 has a U-shape, and the guide hole 51 is an opening in the support plate 5.

As shown in fig. 2, 3 and 4, specifically, the elastic locking assembly 4 includes a locking spring 43 and a driving block 42 slidably connected in the lock case 1, two ends of the locking spring 43 respectively abut against the inner wall of the lock case 1 and one end of the driving block 42 far away from the main bolt 3, the driving block 42 always has a tendency to move towards the main bolt 3 under the elastic force of the locking spring 43, and when the main bolt 3 retracts, a coupling mechanism for pushing the driving block 42 to slide reversely can be formed between one end of the driving block 42 close to the main bolt 3 and the main bolt 3.

As shown in fig. 2, 3, 4, 5 and 10, the driving block 42 of the elastic locking assembly 4 is provided with a through hole 421 through which the inner end of the two-way latch rod 21 can pass, the lock cylinder further comprises an elastic unlocking mechanism arranged in the lock case 1, the specific structure and principle of the elastic unlocking mechanism can refer to an anti-rebounding electromechanical automatic lock disclosed by application number 201811599916.8, the elastic force of the elastic unlocking mechanism acts on the driving block 42 and enables the through hole 421 to be opposite to the inner end of the two-way latch rod 21, and when the two-way latch rod 21 retracts, the elastic unlocking mechanism can be driven to be separated from the driving block 42, so that the driving block 42 can slide towards the main latch bolt 3 under the elastic force of the locking spring 421 to enable the through hole to be staggered with the two-way latch rod 21. Be equipped with on the elasticity locking subassembly 4 and rotate piece 41 that can rotate, rotate the piece 41 outside and be equipped with the circular arc and lean on the face 411, rotate the circular arc on the piece 41 and lean on the face 411 and be located two-way tongue pole 21 inner end department after through-hole 421 staggers with two-way tongue pole 21, can promote elasticity locking subassembly 4 reverse slip and make two-way tongue pole 21 inner along the circular arc when the unblock lean on the face 411 leading-in to the through-hole 421. Specifically, the transmission block 42 is provided with a positioning groove 422, the positioning groove 422 and the through hole 421 are arranged in the same direction, the positioning groove 422 and the through hole 421 are partially overlapped, the rotating member 41 is a roller arranged in the positioning groove 422, the inner wall of the positioning groove 422 is provided with two notches 423, two ends of the rotating member 41 are provided with positioning raised heads 412, the two positioning raised heads 412 are respectively arranged in the two notches 423, and the arc abutting surface 411 is a partial outer peripheral surface of the roller. The supporting plate 5 is located at the outer port of the through hole 421 and the positioning groove 422, and the supporting plate 5 shields the rotating member 41, so that the rotating member 41 can be prevented from being released from the outer port of the positioning groove 422.

As shown in fig. 2, 3 and 4, the coupling mechanism includes a latch 6 hinged to the driving block 42 near one end of the main latch bolt 3, the latch 6 can swing around the hinge point toward the main latch bolt 3 or away from the main latch bolt 3, and an elastic reset member 7 is disposed between the driving block 42 and the latch 6 to enable the latch 6 to swing toward the main latch bolt 3. Particularly, driving block 42 is close to 3 one end lateral parts of main spring bolt and is equipped with location head 424, and piece 6 covers on location head 424, and location head 424 end connection has the spacing screw 8 that prevents piece 6 and deviate from location head 424, and elasticity resets 7 for the cover establish the reset torsion spring on location head 424, and driving block 42 is close to 3 one end lateral parts of main spring bolt and is equipped with stopper 426, and reset torsion spring both ends are supported respectively and are leaned on stopper 426 and piece 6.

As shown in fig. 1, 2, 3 and 4, a stopping portion 425 is further disposed on a side portion of the transmission block 42 close to one end of the main bolt 3, the stopping portion 425 is block-shaped, the stopping portion 425, the positioning head 424 and the limiting block 426 are located on the same side, an inclined stopping surface 4251 is disposed on the stopping portion 425, an inclination angle of the stopping surface 4251 is 35 degrees, the stopping surface 4251 is arranged opposite to the main bolt 3, a first abutting surface 61 and a second abutting surface 62 forming an acute angle or a right angle are disposed on a side portion of the striking plate 6, and the first abutting surface 61 abuts against the stopping surface 4251 under the action of the elastic resetting piece 7. The coupling mechanism also comprises a joint of one side wall of the main bolt 3 close to the driving block 42 and the inner end face of the main bolt 3, and when the main bolt 3 retracts, the joint of one side wall of the main bolt 3 close to the driving block 42 and the inner end face of the main bolt 3 can move along the second abutting face 62 and push the driving block 42 to slide reversely.

When the door is initially closed, the two-way tongue bar 21 is pressed by the door frame to press the support spring 22 and retract into the lock case 1, and the inner end of the two-way tongue bar 21 passes through the through hole 421 of the transmission block 42 through the guide hole 51 of the support plate 5.

As shown in fig. 11, after the door is inserted into the door frame, the two-way tongue rod 21 is popped out of the lock case 1 again under the action of the supporting spring 22 and inserted into the corresponding slot on the door frame, meanwhile, the driving block 42 slides towards the direction close to the main bolt 3 under the action of the locking spring 43 to make the through hole 421 staggered with the two-way tongue rod 21, the rotating member 41 arranged on the driving block 42 is located at the inner end of the two-way tongue rod 21, the two-way tongue rod 21 is obstructed by the rotating member 41 and cannot retract inwards, thereby playing a role of preventing the two-way tongue rod 21 from rebounding, i.e. the elastic tongue rod assembly 2 is locked by the elastic locking assembly 4. The main bolt 3 is extended out of the lock shell 1 in a sliding way and inserted into a corresponding groove on a door frame to realize complete locking.

As shown in fig. 6, in the process that the driving block 42 slides towards the direction close to the main bolt 3, the collision sheet 6 hinged on the driving block 42 abuts against the side part of the main bolt 3, and the main bolt 3 is fixed, so that the collision sheet 6 can overcome the elastic force of the elastic reset piece 7 and swing towards the direction far away from the main bolt 3, and the driving block 42 and the main bolt 3 cannot interfere with each other.

Then, as shown in fig. 7, the main bolt 3 is slid out of the lock case 1 and inserted into the corresponding slot of the door frame to complete locking. The striking plate 6 on the driving block 42 swings again in the direction approaching the main bolt 3 under the elastic force of the elastic restoring piece 7, the first abutting surface 61 on the side of the striking plate 6 abuts against the stopping surface 4251 of the stopping part 425, and the striking plate 6 is located on the retraction path of the main bolt 3.

When unlocking is needed, a user applies pushing force or pulling force on a handle of the door lock, and unlocking is achieved in the sequence that the main bolt 3 retracts the two-way bolt rod 21 first and then retracts. As shown in fig. 8 and 9, the main bolt 3 retracts, the joint of one side wall of the main bolt 3 close to the driving block 42 and the inner end surface of the main bolt 3 abuts against the second abutting surface 62 of the striking plate 6, and since the stopping surface 4251 is arranged opposite to the main bolt 3 and the swinging of the striking plate 6 in the direction close to the main bolt 3 is stopped by the stopping surface 4251, the joint of one side wall of the main bolt 3 close to the driving block 42 and the inner end surface of the main bolt 3 moves along the second abutting surface 62 in the further retraction process of the main bolt 3. Thus, a rigid contact is formed between the main bolt 3 and the driving block 42, and the main bolt 3 directly pushes the driving block 42 to slide away from the main bolt 3 by transmitting the acting force to the hinge point of the striking plate 6 through the second abutting surface 62.

Theoretically, since the elastic tongue bar assembly 2 is pushed or pulled by the user to generate a pressing force on the driving block 42 of the elastic locking assembly 4 all the time when unlocking, the friction between the driving block 42 and the bidirectional tongue bar 21 becomes larger and more difficult to be pushed only by the pushing force of the main locking tongue 3, and for this purpose, the rotating piece 41 is provided as a roller on the driving block 42, so that when the main locking tongue 3 unlocks the elastic locking assembly 4, the inner end of the bidirectional tongue bar 21 is pressed by the user acting force and always abuts against the arc abutting surface 411 of the rotating piece 41.

As shown in fig. 12, when the main tongue 3 slightly pushes the transmission block 42 to slide in the opposite direction, the rotating element 41 and the two-way tongue rod 21 move relatively, so that the rotating element 41 rotates under the action of friction force, and rolling friction is formed between the rotating element 41 and the two-way tongue rod 21, which can greatly reduce the resistance of the main tongue 3 pushing the transmission block 42 to slide in the opposite direction, so that the inner end of the two-way tongue rod 21 can smoothly pass through the through hole 421 on the transmission block 42 to unlock the elastic tongue rod assembly 2.

Example two

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the rotating member 41 is a ball, the ball is sleeved on the positioning column, two notches 423 are disposed on the inner wall of the positioning groove 422, two ends of the positioning column are respectively located in the two notches 423, and the arc abutting surface 411 is a partial outer surface of the ball.

EXAMPLE III

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, coupling mechanism is close to the portion of supporting of 3 one ends of main spring bolt and articulates the driving lever on main spring bolt 3 including locating driving block 42, the driving lever stretches out one side that main spring bolt 3 is close to driving block 42, be equipped with spacing face on the main spring bolt 3, be equipped with between driving lever and the main spring bolt 3 and enable the driving lever to swing to the torsional spring that supports and lean on spacing face to 3 outer end directions of main spring bolt all the time, support and lean on the position to be close to one side of 3 outer ends of main spring bolt when elasticity locking subassembly 4 slides to main spring bolt 3 back, support and be equipped with the inclined plane in the portion, driving lever tip can move and promote driving block 42 backsliding.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a lock core, including lock shell (1) and all slide and set up elasticity tongue pole subassembly (2) on lock shell (1), main spring bolt (3) and elasticity locking subassembly (4), be provided with on elasticity locking subassembly (4) and enable through-hole (421) that elasticity tongue pole subassembly (2) inner passed, elasticity locking subassembly (4) slide and make through-hole (421) and elasticity tongue pole subassembly (2) stagger to main spring bolt (3) under self elastic action, a serial communication port, be equipped with on elasticity locking subassembly (4) and rotate piece (41) that can rotate, it leans on face (411) to be located elasticity tongue pole subassembly (2) inner end department to rotate piece (41) outside to be equipped with the circular arc, support face (411) to the circular arc on the piece (41) after through-hole (421) stagger with elasticity tongue pole subassembly (2) and support face (411), can promote elasticity locking subassembly (4) reverse slip and make elasticity locking subassembly (2) inner lean on face (411) to the circular arc along the circular arc to support face (411) to elasticity tongue Through holes (421).

2. The lock core according to claim 1, characterized in that the elastic locking component (4) is provided with a positioning groove (422), the positioning groove (422) and the through hole (421) are opened in the same direction and partially overlapped, and the rotating member (41) is located in the positioning groove (422).

3. The lock core according to claim 2, wherein the rotating member (41) is a roller, the two ends of the rotating member (41) are provided with positioning projections (412), the inner wall of the positioning groove (422) is provided with two notches (423), the two positioning projections (412) are respectively positioned in the two notches (423), and the arc abutting surface (411) is a part of the outer peripheral surface of the roller.

4. The lock core according to claim 2, wherein the rotating member (41) is a ball, the ball is sleeved on the positioning column, the inner wall of the positioning groove (422) is provided with two notches (423), two ends of the positioning column are respectively located in the two notches (423), and the arc abutting surface (411) is a part of the outer surface of the ball.

5. The lock core according to claim 2, characterized in that a support plate (5) is fixed in the lock shell (1), the elastic tongue rod assembly (2) comprises a bidirectional tongue rod (21) which is slidably arranged and a support spring (22) which is sleeved on the bidirectional tongue rod (21), the support plate (5) is positioned at the outer ports of the through hole (421) and the positioning groove (422) and shields the rotating piece (41), a guide hole (51) which can enable the inner end of the bidirectional tongue rod (21) to pass through is arranged on the support plate (5), and two ends of the support spring (22) respectively act on the support plate (5) and the bidirectional tongue rod (21).

6. The lock core according to claim 1, characterized in that the elastic locking assembly (4) comprises a driving block (42) slidably connected in the lock shell (1) and a locking spring (43) arranged between the inner wall of the lock shell (1) and the driving block (42), the rotating member (41) is arranged on the driving block (42), and when the main bolt (3) retracts, a coupling mechanism for pushing the driving block (42) to slide reversely can be formed between one end of the driving block (42) close to the main bolt (3) and the main bolt (3).

7. The lock core according to claim 6, characterized in that the coupling mechanism comprises a striking plate (6) hinged to one end of the transmission block (42) close to the main bolt (3), an elastic reset piece (7) capable of enabling the striking plate (6) to swing towards the direction close to the main bolt (3) all the time is arranged between the transmission block (42) and the striking plate (6), when the elastic locking component (4) slides towards the main bolt (3), the striking plate (6) abuts against the main bolt (3) and swings towards the direction far away from the main bolt (3), and when the main bolt (3) retracts, the elastic reset piece abuts against the striking plate (6) and pushes the transmission block (42) to move reversely.

8. Lock core according to claim 7, characterized in that the driver block (42) is provided with a stop portion (425), the stop portion (425) is provided with an inclined stop surface (4251), the stop surface (4251) is arranged back to the main bolt (3), and the striking plate (6) abuts against the stop surface (4251) under the elastic force of the elastic reset piece (7).

9. The lock core according to claim 8, characterized in that the side of the striking plate (6) is provided with a first abutting surface (61) and a second abutting surface (62) which form an acute angle or a right angle, the first abutting surface (61) abuts against the stop surface (4251), the coupling mechanism further comprises a joint of one side wall of the main bolt (3) close to the transmission block (42) and the inner end surface of the main bolt (3), and when the main bolt (3) retracts, the joint of one side wall of the main bolt (3) close to the transmission block (42) and the inner end surface of the main bolt (3) can move along the second abutting surface (62).

10. The lock core according to claim 6, characterized in that, the coupling mechanism includes the abutting portion that is located transmission block (42) and is close to main spring bolt (3) one end and hinges the driving lever on main spring bolt (3), the driving lever stretches out one side that main spring bolt (3) is close to transmission block (42), be equipped with spacing face on main spring bolt (3), be equipped with between driving lever and main spring bolt (3) and enable the driving lever to swing to the torsional spring that leans on spacing face to main spring bolt (3) outer end direction all the time, abutting portion is located the side that the driving lever is close to main spring bolt (3) outer end after elasticity locking subassembly (4) slides to main spring bolt (3), be equipped with the inclined plane in the abutting portion, driving lever tip can move and promote transmission block (42) reverse slip along the inclined plane when main spring bolt (3) retract.