CN211258080U

CN211258080U - Anti-theft lock capable of locking oblique bolt

Info

Publication number: CN211258080U
Application number: CN201921942695.XU
Authority: CN
Inventors: 曾剑
Original assignee: Zhejiang Buan Lock Co ltd
Current assignee: Zhejiang Buan Lock Co ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-14
Anticipated expiration: 2029-11-12

Abstract

The utility model provides a can lock pickproof lock of latch bolt belongs to tool to lock technical field. The problem that the existing oblique tongue is poor in locking anti-theft performance is solved. The utility model discloses a lock body, oblique tongue pole and reset spring, oblique tongue one side is equipped with moving part and locating part, the moving part can be followed oblique tongue direction of motion back and forth movement, the locating part rotates and sets up on the lock body, be equipped with the portion of support on the moving part, the portion of support is located between locating part and the oblique tongue pole, the locating part supports under the effect of a torsional spring and supports in the portion of support, the in-process of closing the door, oblique tongue and moving part all return back to the lock body is internal under the exogenic action, the locating part can rotate until supporting and support on oblique tongue lateral part under the effect of torsional spring, after closing the door, can continue to rotate to the direction that is close to oblique tongue pole until supporting and support on supporting the portion after the locating part breaks away. The utility model has the advantages of the latch bolt can reliably be locked after closing the door, has higher theftproof nature.

Description

Anti-theft lock capable of locking oblique bolt

Technical Field

The utility model belongs to the technical field of the tool to lock, a pickproof lock is related to, concretely relates to pickproof lock that can lock oblique tongue.

Background

The structure of a security door lock generally mainly comprises a box-shaped lock body, and a bolt and a latch bolt assembly arranged in the lock body. The anti-theft door is mainly provided with a lock tongue, the latch bolt only has the function of temporarily fixing the door, and the latch bolt can be opened when the outer handle and the inner handle rotate; however, people sometimes forget to lock the door after wearing the door (closing the door), so that the existing outer handles are fixed and immovable, and the latch bolt can also play a role in locking the door; however, the latch bolt only extends out of the lock body under the elastic action of a return spring, and the latch bolt is pushed to compress the return spring to unlock the lock.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned defect that the prior anti-theft lock latch bolt locking exists, and the latch bolt that provides can reliably lock after closing the door, and can't reverse promotion latch bolt, has the anti-theft lock of higher theftproof nature.

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

an anti-theft lock capable of locking a latch bolt comprises a lock body, a latch bolt rod and a reset spring, wherein the latch bolt, the latch bolt rod and the reset spring are arranged on the lock body, the latch bolt is movably arranged on the lock body and is fixedly connected with one end of the latch bolt rod, a latch bolt hole for penetrating the latch bolt is formed in the side part of the lock body, a moving part capable of moving back and forth along the moving direction of the latch bolt is further arranged on one side of the latch bolt, a jack for inserting the moving part is formed in the lock body, the jack and the latch bolt hole are positioned on the same side of the lock body, one end of the moving part extends out of the lock body from the jack under the action of an elastic part, a limiting part is further arranged on one side of the latch bolt rod, the limiting part is rotatably arranged on the lock body, a leaning part is arranged on the moving part and is positioned between the limiting part and the latch bolt rod, the limiting part leans against the leaning part under, the movable piece can overcome the acting force of the elastic piece to retract into the lock body under the action of external force and enable the abutting portion to be separated from the limiting piece in the retraction process, the latch bolt and the movable piece both retract into the lock body under the action of the external force in the door closing process, the limiting piece can rotate under the action of the torsion spring until abutting against the side portion of the latch bolt, after the door is closed, the latch bolt is separated from the limiting piece in the process of extending out of the lock body under the action of the reset spring, the limiting piece can continue to rotate in the direction close to the latch bolt rod until abutting against the abutting portion after being separated from the latch bolt, and at the moment, the limiting piece is blocked on the retraction path.

When one end of the movable piece extends out of the lock body, the limiting piece is limited outside the range of the motion path of the latch bolt through the abutting part, and the limiting piece has no limiting effect on the latch bolt, so that the latch bolt can retract into the lock body; in the door closing process, due to the blocking effect of the door frame, the movable piece and the latch bolt both retract towards the inside of the lock body, so that the relative position of the abutting part and the limiting piece is changed, and the limiting piece can rotate under the action of the torsion spring to abut against the latch bolt rod after losing the support and finally just abut against the side part of the latch bolt; after the door is closed, the movable member cannot extend out due to the blocking of the door frame, the latch bolt can reset and extend into a hole formed in the door frame, the latch bolt breaks away from the limiting member due to extension, the limiting member continues to rotate to lean against the latch bolt rod after losing the support until the latch bolt abuts against the abutting part, at the moment, the limiting member is just positioned on the retraction path of the latch bolt, so that the latch bolt cannot move into the lock body, and therefore latch bolt locking is formed; due to the limit of the limit piece, the latch bolt can not be reversely pushed and retracted, so that the anti-theft device has anti-theft performance.

In the above anti-theft lock capable of locking the latch bolt, the latch bolt hole and the insertion hole are arranged at an interval.

In the anti-theft lock capable of locking the latch bolt, the limiting member is provided with a first abutting section for abutting against with the abutting part in a contact manner, and the first abutting section is gradually close to the latch bolt rod along the movement direction of the latch bolt when extending out of the lock body. Because the first motion direction of leaning on when the section stretches out the lock body along the latch bolt is close to the latch bolt pole gradually, consequently when the moving part moves in to the lock body, the relative first section of leaning on of portion of leaning on keeps away from gradually to make the locating part lose the support, can rotate under the effect of torsional spring after the locating part loses the support.

In the anti-theft lock capable of locking the latch bolt, the lock body is further fixedly provided with a fixing member, the fixing member is provided with a guide groove, the guide groove extends along the movement direction of the latch bolt, the moving member is connected with the fixing member through a connecting member, the connecting member is fixedly connected with the moving member, and the connecting member is arranged in the guide groove and can only move back and forth along the extension direction of the guide groove. The movable piece can only move back and forth along the movement direction of the latch bolt under the guiding action of the guide groove.

In the above anti-theft lock capable of locking the latch bolt, the elastic member is a tension spring, one end of the tension spring is connected with the fixing member, and the other end of the tension spring is connected with the connecting member.

In the above-mentioned anti-theft lock capable of locking the latch bolt, the movable member is flush with the protruding end of the latch bolt when protruding.

In foretell anti-theft lock that can lock latch bolt, still be equipped with an unlocking piece on the latch bolt pole, unlocking piece can follow latch bolt pole axial motion under the effect of external force, is equipped with the second that is used for contacting with unlocking piece on the above-mentioned locating part and supports and lean on the section, and the second supports to support and leans on the section to stretch out the direction of motion when the lock body along the latch bolt and keep away from the latch bolt pole gradually. Because the second supports to lean on the section to keep away from oblique tongue pole along the direction of motion when oblique tongue stretches out the lock body gradually, consequently when the unlocking piece moves to oblique tongue retraction direction, the unlocking piece supports to have the extrapolation effect to the locating part through the second, makes the locating part rotate to the direction of keeping away from oblique tongue pole.

In the above-mentioned anti-theft lock capable of locking the latch bolt, the lock body is provided with a support, the support is provided with a through hole for the latch bolt rod to penetrate through, the reset spring is sleeved on the latch bolt rod, two ends of the reset spring respectively lean against the support and the latch bolt, the latch bolt rod is further fixedly provided with a stop portion, the stop portion and the latch bolt are respectively arranged at two sides of the support, the unlocking member is sleeved on the latch bolt rod and is located between the support and the stop portion, and a buffer spring is further arranged between the unlocking member and the stop portion. The unlocking piece is movably arranged, and due to the existence of the buffer spring, the movement of the latch bolt rod and the movement of the limiting piece have a certain time difference, namely, the unlocking piece moves to the retraction direction of the latch bolt to push out the limiting piece firstly under the action of external force, the buffer spring is compressed when the unlocking piece moves, and the latch bolt rod can move to drive the latch bolt to retract after the compression elastic force of the buffer spring reaches a certain degree, so that the limiting piece is pushed out firstly and then the latch bolt retracts, the initial movement time of the latch bolt and the unlocking piece has a time difference, and the limiting piece can be ensured to retract outside the retraction path range of the latch bolt in time; meanwhile, the arrangement of the buffer spring has a buffer effect on the movement of the unlocking piece and the oblique tongue rod.

In the above anti-theft lock capable of locking the latch bolt, the buffer spring is always in a compressed state.

In foretell anti-theft lock that can lock latch bolt, still be equipped with the shifting block that main spring bolt and transmission link to each other with it on the lock body, main spring bolt slides and sets up on above-mentioned lock body, and the spring bolt hole has been seted up to the lock body lateral part, and the shifting block rotates and sets up on the lock body, is equipped with the square hole that is used for wearing to establish the handle square steel on the shifting block, and the deblocking piece links to each other with the shifting block transmission, and the shifting block drives main spring bolt and contracts the in-process to the lock body is interior, drives above-mentioned locating part through the deblocking piece and rotates to keeping. When the handle rotates the shifting block to unlock, the limiting piece can be rotated to be far away from the latch bolt rod through the unlocking piece, the locking of the limiting piece on the latch bolt is released, the latch bolt can retract, and therefore the main latch bolt and the latch bolt can be simultaneously opened during unlocking.

In the anti-theft lock capable of locking the latch bolt, one end of the shifting block is arranged between the unlocking piece and the support, and the shifting block can push the unlocking piece to move along the retraction direction of the latch bolt when rotating.

Compared with the prior art, the utility model locks the latch bolt by adding a limiting piece, the limiting piece can be rotated to unlock the latch bolt, and the latch bolt can not be reversely pushed to rotate the limiting piece, so that the latch bolt can not be retracted, the locking is reliable, and the anti-theft performance is higher; the unlocking piece moves towards the retraction direction of the oblique tongue, so that the locking of the limiting piece on the oblique tongue can be released, the oblique tongue can be opened, and the limiting piece and the oblique tongue have time difference, so that the limiting piece can be guaranteed to timely retreat out of the retraction path range of the oblique tongue; the unlocking piece is connected with the shifting block in a transmission way, so that the latch bolt can be unlocked when the handle is unlocked, the main lock bolt and the latch bolt are synchronously unlocked, and the unlocking is convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a lock body; 2. a main bolt; 3. a latch bolt; 4. a slanted tongue bar; 5. shifting blocks; 6. a support; 7. a stop part; 8. a return spring; 9. a buffer spring; 10. a movable member; 11. an abutting portion; 12. unlocking the lock; 13. a torsion spring; 14. a limiting member; 141. a first abutting section; 142. a second abutting section; 15. an extension portion; 16. a fixing member; 17. a tension 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.

As shown in fig. 1, the utility model provides a pair of can lock pickproof lock of latch bolt, including lock body 1 and main spring bolt 2, latch bolt 3 and latch bolt pole 4 of setting on lock body 1, main spring bolt 2 slides and sets up on lock body 1, and the spring bolt hole has been seted up to 1 lateral part of lock body, rotates on the lock body 1 and is equipped with shifting block 5, is equipped with the square hole that is used for wearing to establish the handle square steel on the shifting block 5, and shifting block 5 links to each other with the transmission of main spring bolt 2, rotates shifting block 5 and can open main spring bolt 2.

The lock body 1 is also provided with a latch bolt 3 hole and a support 6, the latch bolt 3 is arranged in the latch bolt 3 hole and is fixedly connected with one end of a latch bolt rod 4, the support 6 is fixed on the lock body 1, the support 6 is provided with a through hole, the other end of the latch bolt rod 4 passes through the through hole, the end is provided with a stop part 7, the outer diameter of the stop part 7 is larger than that of the through hole, the stop part 7 and the latch bolt 3 are respectively arranged at two sides of the support 6, and the stop part 7 can prevent the latch bolt rod 4 from moving outwards to be separated from the support 6; the inclined tongue rod 4 is also movably sleeved with a return spring 8, two ends of the return spring 8 respectively lean against the support 6 and the inclined tongue 3, and the return spring 8 is always in a compressed state; an unlocking piece 12 is further arranged between the position stopping part 7 and the support 6, the unlocking piece 12 is sleeved on the oblique tongue rod 4, a buffer spring 9 is compressed between the unlocking piece 12 and the position stopping part 7, one end of the shifting block 5 is clamped between the unlocking piece 12 and the support 6, the clockwise rotation of the shifting block 5 can push the unlocking piece 12 to move towards the retraction direction of the oblique tongue 3, and the unlocking piece 12 pushes the oblique tongue rod 4 to move through compressing the buffer spring 9 to enable the oblique tongue 3 to retract.

The left side of the latch bolt rod 4 is further provided with a moving member 10 and a limiting member 14, when the lock body 1 is installed on a door, the latch bolt 3 is located above the moving member 10, the limiting member 14 is located between the moving member 10 and the latch bolt rod 4, the moving member 10 is further provided with an abutting portion 11, the abutting portion 11 is connected with the moving member 10 through an extending portion 15, the abutting portion 11 is located between the limiting member 14 and the latch bolt rod 4, the limiting member 14 abuts against the abutting portion 11 under the action of a torsion spring 13, the limiting member 14 is strip-shaped, the limiting member 14 extends axially along the latch bolt rod 4, one end of the limiting member 14 is hinged to the lock body 1, the torsion spring 13 is arranged at a hinged end of the limiting member 14, two ends of the torsion spring 13 abut against the lock body 1 and the limiting member 14 respectively, and the limiting member 14 has a.

The limiting member 14 is provided with a first abutting section 141 for abutting against the abutting portion 11 in a contacting manner, the first abutting section 141 is gradually close to the latch bolt rod 4 along the movement direction of the latch bolt 3 when extending out of the lock body 1, and when the movable member 10 retracts towards the inside of the lock body 1, the abutting portion 11 is gradually far away from the first abutting section 141, so that the limiting member 14 loses support and can rotate clockwise to be close to the latch bolt rod 4; the limiting member 14 is further provided with a second abutting section 142 for contacting the unlocking member 12, the second abutting section 142 is gradually away from the latch bolt rod 4 along the movement direction of the latch bolt 3 when extending out of the lock body 1, and when the unlocking member 12 moves along the retraction direction of the latch bolt 3 under the pushing of the shifting block 5, the unlocking member 12 can push the limiting member 14 to rotate counterclockwise and away from the latch bolt rod 4.

The moving part 10 is in a sheet shape, the lock body 1 is provided with an insertion hole for inserting the moving part 10, the insertion hole and the latch bolt 3 are arranged at intervals and are positioned at the same side of the lock body 1, as shown in fig. 1, the movable member 10 extends out of the lock body 1 through the insertion hole, the movable member 10 is flush with the extending end of the latch bolt 3, therefore, when the door is closed, the movable part 10 and the latch bolt 3 can retract into the lock body 1 synchronously, a fixing part 16 is further fixedly arranged in the lock body 1, the fixing part 16 is located on the left side of the movable part 10, a guide groove is formed in the fixing part 16 and is a kidney-shaped groove, the guide groove is formed along the axial extension of the latch bolt rod 4, the movable part 10 is connected with the fixing part 16 through a connecting part, the connecting part is a screw, one end of the screw penetrates through the guide groove and then is in threaded connection with the movable part 10, the outer diameter of the screw is matched with the groove width of the guide groove, and the screw can only move back and forth.

The movable element 10 always has a tendency to move in the direction of extending out of the lock body 1 under the action of an elastic element, which is a tension spring 17, one end of the tension spring 17 is connected to the fixed element 16, and the other end is connected to a screw penetrating through the guide groove.

And (3) locking: in the door closing process, the latch bolt 3 and the movable piece 10 retract synchronously under the action of the door frame, the return spring 8 is compressed, the limiting piece 14 rotates clockwise to be close to the latch bolt rod 4 until leaning against the left side of the latch bolt 3, and at the moment, the limiting piece 14 is not in contact with the abutting part 11; after the door is closed, under the action of a return spring 8, the latch bolt 3 and the latch bolt rod 4 synchronously extend, the moving element 10 is blocked in the lock body 1 by a door frame and cannot extend, the latch bolt 3 can be separated from the limiting element 14 in the extending process, the limiting element 14 loses support after being separated and can continuously rotate clockwise until leaning against the abutting part 11, at the moment, the limiting element 14 just blocks on the retraction path of the latch bolt 3, if the latch bolt 3 is pushed inwards and reversely, the latch bolt 3 can abut against the end part of the limiting element 14, so that the latch bolt 3 cannot be pushed reversely, and locking is formed;

an unlocking process: an inner handle in a rotary door or a key outside the rotary door is used for unlocking, a shifting block 5 rotates clockwise, a main bolt 2 retracts into a lock body 1, meanwhile, the shifting block 5 rotates clockwise to push an unlocking piece 12 to move towards the retraction direction of an oblique bolt 3, the unlocking piece 12 pushes a limiting piece 14 to rotate anticlockwise when moving to gradually keep away from the oblique bolt rod 4, meanwhile, the unlocking piece 12 compresses a buffer spring 9 when moving, after the elasticity of the buffer spring 9 reaches a certain degree, the oblique bolt rod 4 can move through a stopping part 7 to drive the oblique bolt 3 to retract, when the limiting piece 14 rotates to the outside of the retraction path range of the oblique bolt 3, the oblique bolt 3 can retract to the right position smoothly, when the door is opened, a moving piece 10 can return rapidly under the action of a tension spring 17 due to the absence of the limiting of a door frame and extends out of the lock body 1, and the oblique bolt 3 returns under the action of.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

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. An anti-theft lock capable of locking a latch bolt comprises a lock body (1), a latch bolt (3), a latch bolt rod (4) and a reset spring (8), wherein the latch bolt (3), the latch bolt rod (4) and the reset spring (8) are arranged on the lock body (1), the latch bolt (3) is movably arranged on the lock body (1), one end of the latch bolt rod (4) is fixedly connected with the latch bolt (3), a latch bolt (3) hole for penetrating the latch bolt (3) is formed in the side part of the lock body (1), the anti-theft lock is characterized in that a moving part (10) capable of moving back and forth along the moving direction of the latch bolt (3) is further arranged on one side of the latch bolt (3), a jack for inserting the moving part (10) is formed in the lock body (1), the jack and the latch bolt (3) hole are arranged on the same side of the lock body (1), one end of the moving part (10) extends out of the lock body (1) under the action of an elastic part, a limiting part (14) is further arranged on one side of, the movable piece (10) is provided with a leaning part (11), the leaning part (11) is positioned between the limiting piece (14) and the latch bolt rod (4), the limiting piece (14) is leaned against the leaning part (11) under the action of a torsion spring (13), the limiting piece (14) always has a movement trend of rotating towards the direction close to the latch bolt rod (4) under the action of the torsion spring (13), the movable piece (10) can overcome the action force of the elastic piece to retract towards the inside of the lock body (1) under the action of external force and enables the leaning part (11) to be separated from the limiting piece (14) in the retracting process, in the closing process, the latch bolt (3) and the movable piece (10) retract towards the inside of the lock body (1) under the action of external force, the limiting piece (14) can rotate under the action of the torsion spring (13) until being leaned against the side part of the latch bolt (3), and after closing, the latch bolt (3) is separated from the limiting piece (14) in the extending process towards the outside of the lock body (1, after the limiting piece (14) is separated from the latch bolt (3), the limiting piece can continue to rotate towards the direction close to the latch bolt rod (4) until the limiting piece abuts against the abutting part (11), and at the moment, the limiting piece (14) is stopped on the retraction path of the latch bolt (3).

2. An anti-theft lock capable of locking a latch bolt according to claim 1, characterized in that the hole of the latch bolt (3) is spaced from the receptacle.

3. The anti-theft lock capable of locking a latch bolt according to claim 1 or 2, wherein the retaining member (14) is provided with a first abutting section (141) for abutting contact with the abutting portion (11), and the first abutting section (141) gradually approaches the latch bolt rod (4) along the moving direction of the latch bolt (3) when extending out of the lock body (1).

4. The anti-theft lock capable of locking a latch bolt according to claim 3, wherein the lock body (1) is further provided with a fixed member (16), the fixed member (16) is provided with a guide groove, the guide groove extends along the direction of movement of the latch bolt (3), the movable member (10) is connected to the fixed member (16) through a connecting member, the connecting member is fixedly connected to the movable member (10), and the connecting member is disposed in the guide groove and can only move back and forth along the direction of extension of the guide groove.

5. An anti-theft lock capable of locking a latch bolt according to claim 4, wherein the elastic member is a tension spring (17), one end of the tension spring (17) is connected to the fixing member (16), and the other end is connected to the connecting member.

6. The anti-theft lock capable of locking the latch bolt according to claim 3, wherein the latch bolt rod (4) is further provided with an unlocking member (12), the unlocking member (12) can axially move along the latch bolt rod (4) under the action of external force, the limiting member (14) is provided with a second abutting section (142) for contacting with the unlocking member (12), and the second abutting section (142) gradually gets away from the latch bolt rod (4) along the moving direction of the latch bolt (3) when extending out of the lock body (1).

7. The anti-theft lock capable of locking the latch bolt according to claim 6, wherein the lock body (1) is provided with a support (6), the support (6) is provided with a through hole for the latch bolt rod (4) to penetrate through, the return spring (8) is sleeved on the latch bolt rod (4), two ends of the return spring (8) respectively lean against the support (6) and the latch bolt (3), the latch bolt rod (4) is further fixedly provided with a stop portion (7), the stop portion (7) and the latch bolt (3) are respectively arranged at two sides of the support (6), the unlocking member (12) is sleeved on the latch bolt rod (4) and is positioned between the support (6) and the stop portion (7), and a buffer spring (9) is further arranged between the unlocking member (12) and the stop portion (7).

8. The anti-theft lock capable of locking the latch bolt according to claim 7, wherein the lock body (1) is further provided with a main bolt (2) and a shifting block (5) in transmission connection with the main bolt, the main bolt (2) is slidably arranged on the lock body (1), a bolt hole is formed in the side portion of the lock body (1), the shifting block (5) is rotatably arranged on the lock body (1), a square hole for penetrating a handle square steel is formed in the shifting block (5), the unlocking piece (12) is in transmission connection with the shifting block (5), the shifting block (5) drives the main bolt (2) to retract into the lock body (1), and the limiting piece (14) is driven to rotate in the direction away from the latch bolt rod (4) through the unlocking piece (12).

9. An anti-theft lock with latch bolt according to claim 8 characterized in that one end of the said block (5) is arranged between the said unlocking member (12) and the support (6), the block (5) when rotating can push the unlocking member (12) to move along the retraction direction of the latch bolt (3).