CN210563814U

CN210563814U - Lock core

Info

Publication number: CN210563814U
Application number: CN201920848166.7U
Authority: CN
Inventors: 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: 2020-05-19
Anticipated expiration: 2029-06-05

Abstract

The utility model provides a lock core belongs to lock technical field. It has solved the hard technical problem of closing the door when improving cooperation stability between lock core and the door frame. This lock core is including the lock shell, slide and set up the tongue pole subassembly on the lock shell and set up in the lock shell and make the tongue pole subassembly have the elasticity canceling release mechanical system to the outer moving trend of lock shell all the time, be equipped with the mounting hole in the lock shell, the mounting hole is seted up the direction and is mutually perpendicular with tongue pole subassembly slip direction, be equipped with elastic support spare in the mounting hole, elastic support spare part stretches out outside the mounting hole, the inner support of tongue pole subassembly is supported and is leaned on the elastic support spare outside stretching out the mounting hole, can promote elastic support spare when tongue pole subassembly retracts in the lock shell and retract in the mounting hole. The lock core improves the matching stability between the lock core and the door frame when the door is closed, ensures that a user can save labor when the door is closed, and has the advantages of being easy and labor-saving in the subsequent stage of door closing like a common lock core when the door is closed.

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 unscrewed by using a key after a traditional mortise lock is closed, so that the dead bolt assembly is locked, and the aim of completely locking the mortise lock is further fulfilled. Meanwhile, in order to accurately lock, the electromechanical automatic lock is also provided with a pre-locking mechanism, the pre-locking mechanism comprises a bidirectional tongue sliding block, a first oblique tongue and a second oblique tongue which are coaxially hinged at one end of the bidirectional tongue sliding block facing to the locking panel, and a bidirectional tongue rod fixed at one end of the bidirectional tongue sliding block far away from the locking panel, a pre-locking hole which can be penetrated through by the first oblique tongue and the second oblique tongue is arranged on the locking panel, a bidirectional tongue guide frame is fixed at one end of the bidirectional tongue rod far away from the locking panel on the installation base plate, a first limiting hole matched with the bidirectional tongue rod is arranged on the bidirectional tongue guide frame, a bidirectional tongue pressure spring is sleeved on the bidirectional tongue rod, two ends of the bidirectional tongue pressure spring respectively abut against the bidirectional tongue guide frame and the bidirectional tongue sliding block, the bidirectional tongue sliding block is extruded towards the locking panel by the elasticity of the bidirectional tongue pressure spring, so that the first oblique tongue and the second oblique tongue penetrate out of the pre, and the first latch bolt and the second latch bolt can reset under the action of the bidirectional bolt pressure spring after being inwards extruded. In the initial stage of closing the door, when the pre-locking hole is superposed with the pre-locking groove on the door frame, the first latch bolt and the second latch bolt are bounced into the pre-locking groove by utilizing the elasticity of the bidirectional bolt pressure spring to form pre-locking, so that the main locking hole is superposed with the main locking groove on the door frame to ensure that the main bolt can be smoothly inserted into the main locking groove.

However, the electromechanical automatic lock described above also has some disadvantages: at present, in order to prevent the door from deforming due to hard collision between the door and the doorframe, a sealing strip is generally arranged on the doorframe and at the collision position of the door to form flexible contact, but in the daily door closing process, the sealing strip is soft and has elasticity, when the door collides with the sealing strip, the sealing strip can react on the door to enable the door to rebound, and the rebound elasticity can enable the first latch bolt or the second latch bolt to contact with the side wall of the pre-locking groove on the doorframe. When the rebounding force is larger, the first latch bolt and the second latch bolt may be pressed inward again by a larger pressing force, and thus the pre-locking hole may be disengaged from the pre-locking groove on the door frame, so that the main locking hole may be misaligned with the main locking groove on the door frame, and locking may be blocked.

Because the first latch bolt and the second latch bolt are supported by the two-way bolt compression spring to be ejected, when the technical problem that the first latch bolt and the second latch bolt are easy to eject back due to the reaction force of the door frame is encountered, the skilled person can easily think that the method is to directly increase the elasticity of the two-way bolt compression spring so as to form greater resistance to the retraction of the first latch bolt and the second latch bolt to improve the matching stability between the lock cylinder and the door frame when the door is closed. However, because the elastic force of the bidirectional tongue pressure spring directly acts on the bidirectional tongue rod along the axial direction, the increased elastic force of the bidirectional tongue pressure spring always forms resistance in the whole door closing process, and is not as light as a common lock core, so that a user must continuously apply a larger acting force in the whole door closing process, and the defects of more labor and impracticality exist in door closing.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a lock core, solved and closed the hard technical problem of door when improving between lock core and the door frame cooperation stability.

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

the lock core, including lock shell, slide and set up the tongue pole subassembly on the lock shell and set up in the lock shell and make the tongue pole subassembly have the elasticity canceling release mechanical system to the outer moving trend of lock shell all the time, its characterized in that, be equipped with the mounting hole in the lock shell, the mounting hole is seted up the direction and is mutually perpendicular with tongue pole subassembly slip direction, is equipped with elastic support spare in the mounting hole, and the elastic support spare part stretches out outside the mounting hole, and tongue pole subassembly inner supports to lean on the elastic support spare outside stretching out the mounting hole, can promote elastic support spare to retract in the mounting hole when tongue pole subassembly retracts in the lock shell.

Under normal conditions, the tongue rod component extends out of the lock shell under the action of the elastic reset mechanism, and meanwhile, the inner end of the tongue rod component abuts against the elastic supporting piece extending out of the mounting hole. When closing the door, the user exerts pulling force or thrust on the door so that the door moves to the door frame, and the tongue pole subassembly supports with the door frame side and leans on, then makes the tongue pole subassembly compress elasticity canceling release mechanical system and retract in the lock shell under user's effort, and the tongue pole subassembly promotes elastic support piece simultaneously and produces deformation and retract in the mounting hole, and the tongue pole subassembly just can be smoothly to the lock shell retraction like this. After the door is embedded into the door frame, the tongue rod assembly extends out of the lock shell again under the elastic action of the elastic reset mechanism and is inserted into the corresponding slot on the door frame, and the elastic support piece resets under the elastic action of the elastic support piece and extends out of the mounting hole again and abuts against the inner end of the tongue rod assembly.

This lock core forms certain support to the tongue pole subassembly through setting up elastic support piece for the tongue pole subassembly receives elastic support piece's elasticity again when receiving elasticity that elastic reset mechanism applyed elasticity, has improved the resistance when tongue pole subassembly slides to the retraction lock shell direction in other words, thereby make the tongue pole subassembly correspond the counterforce that the slot was interior back to be difficult to receive the sealing strip and in the retraction lock shell on inserting the door frame, improved the cooperation stability between lock core and the door frame when closing the door from this. In addition, generally, when the force applied to the tongue bar assembly in the normal state is increased, the force applied by the user when closing the door is also increased accordingly. However, the elastic force of the elastic support member is not directly applied to the tongue assembly in the axial direction, and the resistance force disappears when the tongue assembly pushes the elastic support member into the mounting hole. That is to say, equivalent to only increasing the degree of difficulty of the initial stage of closing the door, the follow-up process of closing the door still is more light for the user, and the user originally will exert great effort at the initial stage of closing the door, consequently has guaranteed again that the user is more laborsaving when closing the door when improving lock core and door frame cooperation stability. Compared with the traditional lock core, the anti-rebound lock has the advantages that the elastic supporting piece is added in the lock shell, the existing structure is not required to be greatly changed, a certain anti-rebound effect can be achieved, the structure is simpler, and the production cost is lower.

In the lock core, the elastic supporting piece extending out of the mounting hole is provided with a supporting surface which is an inclined surface or an outward convex arc surface, the inner end of the tongue bar component is abutted against the supporting surface, and when the tongue bar component retracts into the lock shell, the inner end of the tongue bar component moves along the supporting surface.

The elastic supporting piece extending out of the mounting hole is provided with a supporting surface with an inclined surface or an outward convex arc surface, and the inner end of the tongue rod assembly is abutted against the supporting surface, so that when the tongue rod assembly retracts into the lock shell, the inner end of the tongue rod assembly moves along the supporting surface to generate a thrust force into the mounting hole for the elastic supporting piece, and the elastic supporting piece is pushed into the mounting hole. The arrangement of the supporting surface can ensure that the elastic supporting piece can apply certain elastic force on the tongue rod assembly to improve the resistance of the tongue rod assembly when the tongue rod assembly retracts into the lock shell; on the other hand, the elastic force of the elastic supporting piece does not directly act along the axial direction of the tongue bar assembly, so that the elastic force of the elastic supporting piece can not generate resistance on the tongue bar assembly in the subsequent stage of door closing.

In the lock core, the elastic supporting parts respectively comprise a supporting spring and a rolling shaft which are arranged in the mounting hole, the extending direction of the rolling shaft is perpendicular to the arranging direction of the mounting hole, two ends of the supporting spring are respectively abutted against the inner wall of the mounting hole and the rolling shaft, the part of the rolling shaft under the elasticity of the supporting spring extends out of the mounting hole, and the supporting surface is the part of the outer peripheral surface of the rolling shaft extending out of the mounting hole.

The supporting surface is a part of the outer peripheral surface of the roller shaft extending out of the mounting hole, after the inner end of the tongue bar component overcomes the elastic force of the supporting spring and pushes the roller shaft into the mounting hole, linear contact rolling friction is formed between the tongue bar component and the roller shaft, so that the friction force between the roller shaft and the tongue bar component can be ignored, and the lock cylinder can be easily and labor-saving like a common lock cylinder when the door is closed in the subsequent stage of closing the door.

In the lock cylinder, as another technical scheme, the elastic supporting member comprises a supporting spring and a supporting block which are both arranged in the mounting hole, the vertical section of the supporting block is in a right triangle shape, the bevel edge and the two straight edges in the vertical section of the supporting block are in transition through an outward convex circular arc, two ends of the supporting spring are respectively abutted against the inner wall of the mounting hole and the supporting block, the supporting block partially extends out of the mounting hole under the elasticity of the supporting spring, and the supporting surface is an inclined surface on the supporting block.

The elastic supporting piece comprises a supporting spring and a supporting block with a vertical section in a right-angled triangle shape, the supporting surface is an inclined surface on the supporting block, the bevel edge and the two straight edges in the vertical section of the supporting block are in outward arc transition, when the tongue rod assembly overcomes the elastic action of the supporting spring and pushes the supporting block into the mounting hole, rolling friction can be formed between the tongue rod assembly and the supporting block through the outward arc transition between the bevel edge and the straight edges in the vertical section of the supporting surface, and therefore the lock cylinder can be easily and labor-saving like a common lock cylinder in the subsequent stage of door closing.

In the lock core, as another technical scheme, the elastic supporting piece is a ball plunger.

The ball plunger is used as an elastic supporting piece, and rolling friction can be formed when the end part of the sliding rod penetrates through the guide hole, so that the subsequent stage of door closing is easy and labor-saving.

In foretell lock core, elasticity canceling release mechanical system establishes the reset spring on the tongue pole subassembly including the supporting seat that is fixed in the lock shell and cover, and the reset spring both ends lean on with supporting seat and tongue pole subassembly outer end counterbalance respectively, and the supporting seat is cubic, runs through on the supporting seat and is provided with the guiding hole, and tongue pole subassembly inner is located the guiding hole, and the mounting hole is located in the supporting seat and communicates with the guiding hole side direction, and the holding surface is located the guiding hole.

Set up the supporting seat to be cubic, the mounting hole sets up and makes elastic support piece also directly integrated in the supporting seat, and tongue pole subassembly the inner is located the guiding hole and mounting hole and guiding hole lateral intercommunication simultaneously can make tongue pole subassembly the inner form between can and the holding surface steadily cooperate all the time like this to the resistance that contracts in the increase tongue pole subassembly improves cooperation stability between lock core and the door frame.

In the lock core, the support seat comprises two connectors which are both rectangular and symmetrically arranged, the opposite surfaces of the two connectors are respectively provided with a semicircular groove and a straight groove communicated with the semicircular groove in a lateral direction, the semicircular grooves on the two connectors form a guide hole, and the straight grooves on the two connectors form a mounting hole.

The supporting seat in the prior art is plate-shaped, and in the application, because the mounting hole communicated with the guide hole in the lateral direction needs to be arranged, the supporting seat is formed by adopting two connectors which are cuboid and symmetrically arranged, the supporting piece is placed into the straight groove of one connector during assembly, then the other connector is attached to the connector, the semicircular grooves on the two connectors naturally form the guide hole, and the straight grooves on the two connectors naturally form the mounting hole provided with the supporting piece, so that the pre-fixing mechanism can be arranged in the supporting seat to be matched with the slide bar.

In the lock core, the lock shell comprises a shell with an opening at one side and a cover plate connected to the opening of the shell, the shell comprises two semi-shells which are arranged oppositely, a plurality of positioning lugs are arranged on the opposite surfaces of the two connectors, positioning holes corresponding to the positioning lugs are arranged on the two semi-shells in a penetrating manner, and the positioning lugs are embedded into the corresponding positioning holes.

During assembly, one of the connecting bodies is positioned on the corresponding half shell through the positioning lug, the other connecting body is also positioned on the corresponding half shell through the positioning lug, and then the two connecting bodies are naturally attached together to form the supporting seat when the two half shells are fixedly connected into the shell.

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

1. the installation hole which is vertical to the sliding direction of the tongue rod assembly and the elastic supporting piece which is positioned in the installation hole are arranged, so that the tongue rod assembly is under the action of the elastic reset mechanism and is also under the elastic force of the elastic supporting piece, which is equivalent to improving the resistance of the tongue rod assembly when the tongue rod assembly slides towards the direction of retracting into the lock shell, and the tongue rod assembly is not easy to be subject to the reaction force of the sealing strip and retract into the lock shell after being inserted into the corresponding slot on the door frame, thereby improving the matching stability between the lock core and the door frame when the door is closed;

2. the elasticity of the elastic supporting piece is not directly applied along the axial direction of the tongue bar component, only the difficulty of the initial stage of door closing is increased, the subsequent process of door closing is still lighter for users, and the users can apply larger acting force in the initial stage of door closing, so that the matching stability of the lock cylinder and the door frame is improved, and simultaneously, the labor is saved when the users close the door;

3. the supporting spring and the rolling shaft are adopted as elastic supporting pieces, and the linear contact rolling friction can be formed between the supporting spring and the tongue bar component after the supporting spring and the rolling shaft are retracted into the mounting hole, so that the friction force between the tongue bar component and the rolling shaft is reduced, and the lock cylinder can be easily and labor-saving like a common lock cylinder when the door is closed in the subsequent stage of closing the door.

Drawings

FIG. 1 is a schematic view of a latch bar assembly and a support base in a lock cylinder.

FIG. 2 is a schematic view of the support base according to an embodiment.

Fig. 3 is an enlarged view at a in fig. 2.

Figure 4 is an exploded view of the tongue bar assembly and lock housing.

FIG. 5 is an exploded view of the support base according to one embodiment.

FIG. 6 is a sectional view of the supporting seat along the direction of the installation hole in the first embodiment.

FIG. 7 is a schematic view of the inner portion of the support seat when the slide bar passes through the guide hole according to the first embodiment.

In the drawings, 1, a lock shell; 11. a half shell; 111. positioning holes; 12. a cover plate; 121. a through hole; 2. a tongue bar assembly; 21. a slide bar; 22. positioning blocks; 23. a first tongue; 24. a second tongue; 3. an elastic reset mechanism; 4. an elastic support member; 41. a support surface; 5. a support spring; 6. a roller; 7. a supporting seat; 71. a guide hole; 72. mounting holes; 73. a linker; 731. a semicircular groove; 732. a straight groove; 733. positioning the bump; 8. a return spring.

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 and 2, the lock core includes a lock case 1, a tongue rod assembly 2 slidably disposed on the lock case 1, and an elastic reset mechanism 3 disposed in the lock case 1 and making the tongue rod assembly 2 always have a tendency of moving outward from the lock case 1, the lock case 1 includes a case with an opening on one side and a cover plate 12 connected to the opening of the case, and the elastic reset mechanism 3 and the tongue rod assembly 2 are both disposed in the case. Specifically, the cover plate 12 is provided with a through hole 121 in a penetrating manner, the tongue rod assembly 2 includes a sliding rod 21, a first sliding tongue 23 and a second sliding tongue 24, the outer end of the sliding rod 21 is fixedly connected with a positioning block 22, the first sliding tongue 23 and the second sliding tongue 24 are connected to two sides of the positioning block 22, and the first sliding tongue 23 and the second sliding tongue 24 extend out of the through hole 121 under the elastic force of the elastic resetting mechanism 3.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, in the present embodiment, the elastic restoring mechanism 3 includes a supporting seat 7 fixed in the lock housing 1 and a restoring spring 8 sleeved on the sliding rod 21, and two ends of the restoring spring 8 respectively abut against the supporting seat 7 and the positioning block 22. The support seat 7 is provided with a guide hole 71 in a penetrating manner, the inner end of the slide rod 21 is positioned in the guide hole 71, and when the tongue rod assembly 2 retracts into the lock case 1, the inner end of the slide rod 21 penetrates out of the guide hole 71. The lock core is also provided with a main lock tongue, the structure and action mode of the main lock tongue are the same as those of the prior art, and the structure of the tongue bar component 2 is also the same as that of the prior art, so that the details are not repeated.

As shown in fig. 2, 3 and 6, the supporting seat 7 is block-shaped, a mounting hole 72 which is laterally communicated with the guide hole 71 is formed in the supporting seat 7, an elastic supporting member 4 is arranged in the mounting hole 72, part of the elastic supporting member 4 extends into the guide hole 71, a supporting surface 41 which is an outward convex arc surface is arranged on the elastic supporting member 4 in the guide hole 71, the end of the sliding rod 21 abuts against the supporting surface 41, and when the tongue bar assembly 2 retracts into the housing, the end of the sliding rod 21 can move along the supporting surface 41 and push the elastic supporting member 4 to retract into the mounting hole 72.

As shown in fig. 3 and 6, the elastic support 4 includes a support spring 5 and a roller 6, the roller 6 is slidably disposed in the mounting hole 72, an extending direction of the roller 6 is perpendicular to an opening direction of the mounting hole 72, an extending direction of the roller 6 is perpendicular to an extending direction of the slide rod 21, one end of the support spring 5 abuts against an inner wall of the mounting hole 72, the other end of the support spring 5 abuts against the roller 6, a portion of the roller 6 is located in the guide hole 71 under an elastic force of the support spring 5, and the support surface 41 is a portion of an outer peripheral surface of the roller 6 located in the guide hole 71.

As shown in fig. 4 and 5, the supporting seat 7 includes two connecting bodies 73 symmetrically arranged in a rectangular shape, the opposite surfaces of the two connecting bodies 73 are respectively provided with a semi-circular groove 731 and a straight groove 732 laterally communicated with the semi-circular groove 731, when the opposite surfaces of the two connecting bodies 73 are attached together, the semi-circular grooves 731 on the two connecting bodies 73 form a guiding hole 71, and the straight grooves 732 on the two connecting bodies 73 form a mounting hole 72. The shell of the lock shell 1 includes two opposite half shells 11, the opposite surfaces of the two connectors 73 are respectively provided with a plurality of positioning protrusions 733, the two half shells 11 are respectively provided with positioning holes 111 corresponding to the positioning protrusions 733, and each positioning protrusion 733 is embedded into the corresponding positioning hole 111.

As shown in fig. 3, in the normal state, the slide rod 21 makes the first sliding tongue 23 and the second sliding tongue 24 extend out of the through hole 121 under the elastic force of the return spring 4, and one end of the slide rod 21 abuts against the supporting surface 41 of the roller 6 in the guide hole 71, i.e. against a part of the outer surface of the roller 6 in the guide hole 71. When the door is closed, a user applies a pulling force or a pushing force on the door to move the door toward the doorframe, and the first sliding tongue 23 or the second sliding tongue 24 abuts against the side of the doorframe to retract the entire tongue bar assembly 2 into the lock case 1. The slide rod 21 is moved in the direction of retracting into the lock case 1, the return spring 4 is compressed by the positioning block 22 on the slide rod 21, and the end of the slide rod 21 moves along a part of the outer surface of the roller 6 in the through hole 121, so that the end of the slide rod 21 pushes the roller 6 to retract into the mounting hole 72 against the elastic force of the supporting spring 5, and the roller 6 no longer supports the slide rod 21, so that the end of the slide rod 21 can smoothly pass through the guide hole 71 on the supporting seat 7. When the first sliding bolt 23 and the second sliding bolt 24 are completely retracted into the lock case 1, the door is embedded into the door frame, and then the first sliding bolt 23 and the second sliding bolt 24 extend out of the lock case 1 again under the elastic force of the return spring 4 and are inserted into the corresponding slot on the door frame to initially position the door, and then the main bolt in the lock core can extend out of the lock case 1 and be inserted into the door frame to complete the locking of the door.

The lock cylinder forms certain support for the sliding rod 21 through the matching of the supporting spring 5 and the rolling shaft 6, so that the sliding rod 21 receives certain elasticity of the supporting spring 5 while receiving the elasticity applied by the reset spring 4, which is equivalent to improving the resistance of the sliding rod 21 when sliding towards the direction of retracting the lock shell 1, thereby ensuring that the tongue rod component 2 is not easy to receive the counterforce of the sealing strip and retract into the lock shell 1 after being inserted into the corresponding slot on the door frame, and improving the matching stability between the lock cylinder and the door frame when the door is closed.

In addition, generally, when the force applied to the slide rod 21 in the normal state is increased, the force applied by the user when closing the door is also increased accordingly. However, the elastic force of the support spring 5 is not directly applied to the slide rod 21 in the axial direction of the slide rod 21, and when the slide rod 21 pushes the roller 6 into the mounting hole 72 against the elastic force of the support spring 5, as shown in fig. 7, a rolling friction of line contact is formed between the roller 6 and the slide rod 21, that is, the slide rod 21 is not subjected to the elastic force of the support spring 5 after the roller 6 is retracted into the mounting hole 72. That is to say, the pre-fixing mechanism only forms a certain resistance to the movement of the sliding rod 21 in the direction of retracting the lock case 1 at the initial stage of closing the door, and once the roller 6 retracts into the mounting hole 72, the resistance disappears, which is equivalent to only increasing the difficulty at the initial stage of closing the door, the subsequent process of closing the door is still lighter for the user, and the user will exert a larger acting force at the initial stage of closing the door, thereby improving the stability of the matching between the lock cylinder and the door frame and ensuring that the user saves labor when closing the door.

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 elastic supporting member 4 includes a supporting spring 5 and a supporting block, the supporting block is a right-angled triangle block, the supporting surface 41 is an inclined surface on the supporting block, one end of the supporting spring 5 abuts against the inner wall of the mounting hole 72, the other end of the supporting spring 5 abuts against the supporting block, and the supporting block partially extends into the guiding hole 71 under the elastic force of the supporting spring 5.

EXAMPLE III

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in the present embodiment, the elastic support 4 is a ball plunger, and the support surface 41 is a part of the outer surface of the ball on the ball plunger.

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 lock core, including lock shell (1), slide and set up tongue pole subassembly (2) on lock shell (1) and set up in lock shell (1) and make tongue pole subassembly (2) have elasticity canceling release mechanical system (3) to the outer removal trend of lock shell (1) all the time, a serial communication port, be equipped with mounting hole (72) in lock shell (1), mounting hole (72) are seted up the direction and are perpendicular mutually with tongue pole subassembly (2) slip direction, are equipped with elastic support piece (4) in mounting hole (72), and elastic support piece (4) part stretches out outside mounting hole (72), and tongue pole subassembly (2) inner is supported and is leaned on elastic support piece (4) outside stretching out mounting hole (72), can promote elastic support piece (4) when tongue pole subassembly (2) retract in lock shell (1) and retract in mounting hole (72).

2. Lock cylinder according to claim 1, characterized in that the resilient support (4) extending out of the mounting hole (72) is provided with a support surface (41) which is an inclined surface or a convex circular arc surface, the inner end of the tongue assembly (2) resting against the support surface (41), the inner end of the tongue assembly (2) moving along the support surface (41) when the tongue assembly (2) is retracted into the lock housing (1).

3. The lock core according to claim 2, wherein the elastic supporting members (4) each comprise a supporting spring (5) and a roller (6) which are arranged in the mounting hole (72), the extending direction of the roller (6) is perpendicular to the opening direction of the mounting hole (72), two ends of the supporting spring (5) respectively abut against the inner wall of the mounting hole (72) and the roller (6), the roller (6) extends out of the mounting hole (72) under the elastic force of the supporting spring (5), and the supporting surface (41) is a part of the outer peripheral surface of the roller (6) extending out of the mounting hole (72).

4. The lock core according to claim 2, wherein the elastic support member (4) comprises a support spring (5) and a support block, both of which are disposed in the mounting hole (72), the vertical section of the support block is a right triangle, the inclined edge and the two straight edges of the vertical section of the support block are in transition through an outward convex circular arc, both ends of the support spring (5) respectively abut against the inner wall of the mounting hole (72) and the support block, the support block partially extends out of the mounting hole (72) under the elastic force of the support spring (5), and the support surface (41) is an inclined surface on the support block.

5. Lock core according to claim 2, characterized in that the resilient support (4) is a ball plunger.

6. The lock core according to claim 2, wherein the elastic reset mechanism (3) comprises a support seat (7) fixed in the lock shell (1) and a reset spring (8) sleeved on the tongue rod assembly (2), two ends of the reset spring (8) respectively abut against the support seat (7) and the outer end of the tongue rod assembly (2), the support seat (7) is block-shaped, a guide hole (71) is formed in the support seat (7) in a penetrating manner, the inner end of the tongue rod assembly (2) is located in the guide hole (71), the mounting hole (72) is formed in the support seat (7) and is laterally communicated with the guide hole (71), and the support surface (41) is located in the guide hole (71).

7. The lock core according to claim 6, characterized in that the support base (7) comprises two connecting bodies (73) which are both rectangular and symmetrically arranged, the opposite surfaces of the two connecting bodies (73) are respectively provided with a semi-circular groove (731) and a straight groove (732) which is laterally communicated with the semi-circular groove (731), the semi-circular grooves (731) on the two connecting bodies (73) form a guide hole (71), and the straight grooves (732) on the two connecting bodies (73) form a mounting hole (72).

8. The lock core according to claim 7, wherein the lock case (1) comprises a case with an opening at one side and a cover plate (12) connected to the opening of the case, the case comprises two half cases (11) arranged oppositely, the opposite surfaces of the two connecting bodies (73) are respectively provided with a plurality of positioning protrusions (733), the two half cases (11) are respectively provided with a positioning hole (111) corresponding to the positioning protrusions (733) in a penetrating manner, and each positioning protrusion (733) is embedded into the corresponding positioning hole (111).