Magnetic attraction lock cylinder

Abstract

The utility model discloses a magnetic attraction lock cylinder which comprises a lock shell, a spring bolt, a rotatable dial wheel and a lock frame, the dial wheel and the lock frame are arranged in the lock shell, the lock frame comprises a sliding frame and a reset frame which are installed in the lock shell in a sliding mode, the sliding frame is matched with the reset frame in a sliding mode, and the spring bolt is fixedly or integrally arranged at the outer end of the sliding frame. The spring bolt stretches out of the lock shell and can drive the sliding frame to slide relative to the reset frame, the position of the reset frame is relatively fixed, a first reset piece for resetting the sliding frame is arranged in the lock shell, the reset frame is in linkage with the shifting wheel, the shifting wheel is rotated to enable the reset frame to drive the sliding frame to move backwards, and the spring bolt retracts back to the lock shell under the action of the first reset piece. According to the anti-theft lock, the moving resistance of the spring bolt is small, the spring bolt can be smoothly sucked out, and a magnet with overlarge magnetic force does not need to be selected.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a magnetic lock core. Background Art

[0002] A door lock is a hardware component installed on a door to maintain the security of a room or an individual storage space. Its basic structure includes a lock tongue that can perform telescopic movement under the action of an external force and is matched with a buckle box installed on the door frame to prevent the door from being opened accidentally, such as by the wind.

[0003] The prior Chinese patent application No. CN202321200433.2 discloses a magnetic silent lock tongue, which includes a lock box and a lock tongue body arranged in the lock box. A magnetic part is provided at the head of the lock tongue body, and a return spring for driving the lock tongue body to retract into the lock box is arranged in the lock box. It is characterized in that a buffer part is arranged at the position of the lock box corresponding to the tail of the lock tongue body, a buffer foot is arranged on the buffer part, one end of the buffer foot is connected to the buffer part, and the other end is in contact with the lock tongue body.

[0004] Problems existing in the above patent: The existing lock frame is usually integrally arranged. When the lock tongue is sucked out, the whole lock frame moves, and the moving resistance is large. Then it is necessary to ensure that the magnet has sufficient magnetic force. Otherwise, the movement of the lock frame will be blocked, and the lock tongue cannot be smoothly sucked out. There are relatively high requirements for the magnetic force in the selection of the magnet. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art and provide a magnetic lock core.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A magnetic lock core includes a lock shell, a lock tongue, a rotatable dial, and a lock frame. The dial and the lock frame are arranged in the lock shell. The lock frame includes a sliding frame and a reset frame slidably installed in the lock shell. The sliding frame and the reset frame are slidably matched, and a limiting structure is arranged between them. The lock tongue is fixed or integrally arranged at the outer end of the sliding frame. When the lock tongue extends out of the lock shell, it can drive the sliding frame to slide relative to the reset frame, and the position of the reset frame is relatively fixed. A first reset part for resetting the sliding frame is arranged in the lock shell. The reset frame and the dial are linked. Rotating the dial makes the reset frame drive the sliding frame that originally brought the lock tongue out of the lock shell to move backward and makes the lock tongue retract into the lock shell under the action of the first reset part. A second reset part for returning the reset frame to the initial position is arranged in the lock shell.

[0007] As a preferred technical solution of the present utility model, a chute is provided on the sliding frame, the reset frame has a reset portion slidably installed in the chute, an opening is provided at the rear end of the chute, the limiting structure includes an inner blocking surface provided at the opening, an outer blocking surface is formed at one end of the chute opposite to the inner blocking surface, a stopper is provided on the reset portion and is located within the chute and is restricted between the inner blocking surface and the outer blocking surface.

[0008] As a preferred technical solution of the present utility model, the lower part of the chute is provided with an open mouth.

[0009] As a preferred technical solution of the present utility model, the sliding frame includes a head, first sliding portions located on both sides of the head, and a second sliding portion. There is a distance between the first sliding portion and the second sliding portion. The chute is opened in the first sliding portion. An installation groove is provided in the second sliding portion. The first reset member is provided as a spring and is limited within the installation groove. A limiting block is fixed or integrally provided on the inner wall of the lock case and abuts against the front end of the first reset member within the installation groove. When the sliding frame moves outwards, the first reset member is gradually compressed.

[0010] As a preferred technical solution of the present utility model, a shock-absorbing block is fixed or integrally provided in the lock case corresponding to the rear end of the second sliding portion, and the second sliding portion can abut against the shock-absorbing block when retracting towards the inner side of the lock case.

[0011] As a preferred technical solution of the present utility model, a magnetic member is embedded in the head, and a head cover is provided outside the head to enclose the magnetic member.

[0012] As a preferred technical solution of the present utility model, the lock case includes an upper case and a lower case. A through hole is opened on the upper case. A connecting column is provided in the lower case between the first sliding portion and the second sliding portion. An internal threaded hole is provided in the connecting column. A threaded member is provided at the through hole and is threadedly connected to the internal threaded hole in the connecting column.

[0013] As a preferred technical solution of the present utility model, a U-shaped sleeve for fixing the upper case and the lower case together is sleeved outside the lock case. A long circular hole is opened on the U-shaped sleeve, and the long circular hole corresponds to the position of the through hole.

[0014] As a preferred technical solution of the present utility model, a long slot is provided along the length direction of the reset frame. A dial extends a dial piece into the long slot. A contact surface that can cooperate with the dial piece is provided on the inner wall at the rear end of the long slot. The dial piece abuts against the contact surface of the long slot. When the dial rotates, the sliding frame can drive the lock tongue to slide backwards into the lock case. The second reset member is provided as a spring and is provided at one end of the reset member away from the sliding frame. Both ends of the second reset member abut against the sliding frame and the inner wall of the lock case respectively.

[0015] As a preferred technical solution of the present utility model, the paddle is always in contact with the contact surface. A positioning portion is provided on one side of the dial relative to the paddle. When the dial is not operated, the paddle and the positioning portion are in an inclined state. On one side inner wall of the lock case corresponding to the positioning portion, a limiting area is formed. Both sides of the limiting area have a first limiting portion and a second limiting portion that can be in contact with the positioning portion. The first limiting portion and the second limiting portion are located on the rotation path of the positioning portion.

[0016] In summary, the beneficial effects of the present utility model are as follows: When the lock core corresponds to the lock box of the door frame, the magnetic lock tongue is sucked outwards, driving the sliding frame to move outwards to reach the locking position and gradually compressing the first resetting member. At this time, the resetting frame remains in place. Compared with the traditional way of the overall movement of the lock frame, the resistance of the movement is reduced, and there is no need for too large a magnetic force, enabling the lock tongue to be smoothly sucked out. Rotating the dial causes the resetting frame to move backward and gradually compress the second resetting member. Based on the limiting structure, the resetting frame can pull the sliding frame to drive the lock tongue to disengage from the lock box of the door frame, and under the action of the first resetting member, the lock tongue quickly returns to its original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a schematic structural view of the present utility model with the upper shell removed;

[0019] Figure 3 is a schematic structural view of the upper shell of the present utility model;

[0020] Figure 4 is a schematic structural view of the lock frame of the present utility model;

[0021] Figure 5 is a schematic structural view of the lock frame of the present utility model with the head cover removed;

[0022] Figure 6 is a schematic structural view of the back surface of the sliding frame of the present utility model;

[0023] Figure 7 is a schematic structural view of the resetting frame of the present utility model.

[0024] Reference Numerals: 1, lock housing; 2, lock tongue; 3, dial; 4, lock frame; 5, sliding frame; 6, reset frame; 7, first reset member; 8, second reset member; 9, chute; 10, reset portion; 11, opening; 12, inner blocking surface; 13, outer blocking surface; 14, stop block; 15, head; 16, first sliding portion; 17, second sliding portion; 18, limit block; 19, shock-absorbing block; 20, magnetic member; 21, head cover; 22, upper housing; 23, lower housing; 24, through hole; 25, connecting column; 26, threaded member; 27, U-shaped sleeve; 28, oblong hole; 29, long slot; 30, paddle; 31, contact surface; 32, positioning portion; 33, limit area; 34, first limit portion; 35, second limit portion; 36, mounting groove. Detailed Embodiment

[0025] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and the drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work all fall within the protection scope of the present utility model.

[0026] The specific embodiments of the present utility model will be described below with reference to the drawings.

[0027] As Figures 1 to 7 shown, a magnetic lock core includes a lock housing 1, a lock tongue 2, a rotatable dial 3 and a lock frame 4. The dial 3 and the lock frame 4 are arranged in the lock housing 1. The lock frame 4 includes a sliding frame 5 and a reset frame 6 slidably mounted in the lock housing 1. The sliding frame 5 and the reset frame 6 are slidably engaged with each other and a limiting structure is provided therebetween. The lock tongue 2 is fixedly or integrally provided at the outer end of the sliding frame 5. When the lock tongue 2 extends out of the lock housing 1, it can drive the sliding frame 5 to slide relative to the reset frame 6 and the position of the reset frame 6 is relatively fixed. A first reset member 7 for resetting the sliding frame 5 is arranged in the lock housing 1. The reset frame 6 and the dial 3 are linked. Rotating the dial 3 causes the reset frame 6 to drive the sliding frame 5 that originally brought the lock tongue 2 out of the lock housing 1 to move backward and under the action of the first reset member 7, the lock tongue 2 retracts into the lock housing 1. A second reset member 8 for returning the reset frame 6 to the initial position is arranged in the lock housing 1.

[0028] The sliding frame 5 is provided with a sliding groove 9, and the reset frame 6 has a reset portion 10 slidably installed in the sliding groove 9. The rear end of the sliding groove 9 is provided with an opening 11. The limiting structure includes an inner blocking surface 12 arranged at the opening 11, and one end of the sliding groove 9 relative to the inner blocking surface 12 forms an outer blocking surface 13. The reset portion 10 is provided with a stopper 14 located in the sliding groove 9 and the stopper 14 is limited between the inner blocking surface 12 and the outer blocking surface 13. The sliding groove 9 is open below, and the lock tongue 2 is sucked out to drive the sliding frame 5 to be pulled out until it is completely matched with the door frame lock box. At this time, the stopper 14 is close to the inner blocking surface 12 or fits with the inner blocking surface 12. When the dial wheel 3 is rotated, the stopper 14 fits with the inner blocking surface 12 and drives the sliding frame 5 to be pulled back into the lock shell 1. When installing, the sliding groove 9 of the sliding frame 5 is directly aligned with the reset portion 10 of the reset frame 6 and installed from top to bottom. The stopper 14 will not detach from the sliding groove 9 when sliding, and the lower end of the inner blocking surface 12 is lower than the upper end surface of the stopper 14.

[0029] The sliding frame 5 includes a head 15, a first sliding portion 16 and a second sliding portion 17 located on both sides of the head 15, there is a distance between the first sliding portion 16 and the second sliding portion 17, the slide groove 9 is opened in the first sliding portion 16, and the second sliding portion 17 is provided with a mounting groove 36, the first reset member 7 is set as a spring and the first reset member 7 is limited in the mounting groove 36, the inner wall of the lock shell 1 is fixed or integrally provided with a limit block 18 located in the mounting groove 36 and abutting against the front end of the first reset member 7, when the sliding frame 5 moves outward, the first reset member 7 is gradually compressed, the head 15 is embedded with a magnetic member 20 and a head covering the outside of the head 15 to seal the magnetic member 20, and in this embodiment, the limit block 18 is preferably arranged on the inner wall of the upper shell 22.

[0030] A shock-absorbing block 19 is fixed or integrally provided at the rear end of the lock shell 1 corresponding to the second sliding portion 17. When the second sliding portion 17 is retracted toward the inside of the lock shell 1, it can be against the shock-absorbing block 19, thereby reducing noise when the lock tongue 2 is retracted. The shock-absorbing block 19 in this embodiment is T-shaped, H-shaped or other geometric shapes.

[0031] The lock housing 1 includes an upper shell 22 and a lower shell 23. A through hole 24 is formed on the upper shell 22. A connecting column 25 is provided in the lower shell 23 and is located between the first sliding portion 16 and the second sliding portion 17. An internal threaded hole is provided in the connecting column 25. A threaded member 26 threadedly connected to the internal threaded hole of the connecting column 25 is provided at the through hole 24. The threaded member 26 in this embodiment is a bolt.

[0032] The lock housing 1 is provided with a U-shaped sleeve 27 for fixing the upper housing 22 and the lower housing 23 together. The U-shaped sleeve 27 is provided with an oblong hole 28 , and the oblong hole 28 corresponds to the position of the through hole 24 .

[0033] The reset frame 6 is provided with a long slot 29 along its length direction. The dial 3 extends a dial piece 30 into the long slot 29. There is a contact surface 31 on the inner wall at the rear end of the long slot 29 that can cooperate with the dial piece 30. The dial piece 30 abuts against the contact surface 31 of the long slot 29. Rotating the dial 3 can cause the sliding frame 5 to drive the lock tongue 2 to slide backward into the lock housing 1. The second reset member 8 is set as a spring and is arranged at one end of the reset member away from the sliding frame 5. The two ends of the second reset member 8 respectively abut against the sliding frame 5 and the inner wall of the lock housing 1.

[0034] The dial piece 30 always abuts against the contact surface 31. A positioning portion 32 is arranged on one side of the dial 3 relative to the dial piece 30. When the dial 3 is not operated, the dial piece 30 and the positioning portion 32 are in an inclined state. On the inner wall of the lock housing 1 corresponding to the positioning portion 32, a limiting area 33 is formed. There are a first limiting portion 34 and a second limiting portion 35 on both sides of the limiting area 33 that can abut against the positioning portion 32. The first limiting portion 34 and the second limiting portion 35 are located on the rotation path of the positioning portion 32. The rotation angle of the dial 3 is limited by the first limiting portion 34 and the second limiting portion 35. In this embodiment, the first limiting portion 34 and the second limiting portion 35 are located on the lower housing 23.

[0035] Working principle: When the lock core corresponds to the lock box on the door frame, the magnetic lock tongue is sucked outwards, driving the sliding frame 5 to move outwards to the locked position and gradually compressing the first reset member 7. At this time, the position of the reset frame 6 remains unchanged. Compared with the way that the traditional lock frame 4 moves as a whole, the resistance to movement is reduced, and no excessive magnetic force is required, enabling the lock tongue 2 to be smoothly sucked out. Rotating the dial 3 causes the reset frame 6 to move backward and gradually compress the second reset member 8. Based on the limiting structure, the reset frame 6 can pull the sliding frame 5 to drive the lock tongue to disengage from the lock box on the door frame, and under the action of the first reset member 7, the lock tongue quickly returns to its position.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic lock core, comprising a lock housing (1), a lock tongue (2), a rotatable dial wheel (3) and a lock frame (4), wherein the dial wheel (3) and the lock frame (4) are arranged in the lock housing (1), characterized in that: The lock frame (4) comprises a sliding frame (5) and a reset frame (6) which are slidably mounted in the lock housing (1); the sliding frame (5) and the reset frame (6) are slidably matched and a limited position structure is arranged between the two; the lock tongue (2) is fixed or integrally arranged at the outer end of the sliding frame (5); the lock tongue (2) protrudes out of the lock housing (1) to drive the sliding frame (5) to slide relative to the reset frame (6) and the position of the reset frame (6) is relatively fixed; a first reset member (7) for resetting the sliding frame (5) is arranged in the lock housing (1); the reset frame (6) and the dial wheel (3) are linked; the dial wheel (3) is rotated to make the reset frame (6) drive the sliding frame (5) which originally brought the lock tongue (2) out of the lock housing (1) to move backwards and retract the lock tongue (2) into the lock housing (1) under the action of the first reset member (7); a second reset member (8) for returning the reset frame (6) to an initial position is arranged in the lock housing (1).

2. The magnetic lock core according to claim 1, characterized in that: The sliding frame (5) is provided with a sliding groove (9), the reset frame (6) has a reset portion (10) slidably mounted in the sliding groove (9), the rear end of the sliding groove (9) is provided with an opening (11), the limiting structure comprises an inner blocking surface (12) arranged at the opening (11), one end of the sliding groove (9) opposite to the inner blocking surface (12) forms an outer blocking surface (13), and the reset portion (10) is provided with a stopper (14) located in the sliding groove (9), and the stopper (14) is limited between the inner blocking surface (12) and the outer blocking surface (13).

3. The magnetic lock core according to claim 2, characterized in that: The lower side of the slide groove (9) is open.

4. The magnetic lock core according to claim 2 or 3, characterized in that: The sliding frame (5) comprises a head (15), a first sliding portion (16) and a second sliding portion (17) located on both sides of the head (15); there is a distance between the first sliding portion (16) and the second sliding portion (17); the sliding groove (9) is opened in the first sliding portion (16); a mounting groove (36) is arranged in the second sliding portion (17); the first reset member (7) is arranged as a spring and the first reset member (7) is limited in the mounting groove (36); a limit block (18) located in the mounting groove (36) and abutting against the front end of the first reset member (7) is fixed or integrally arranged on the inner wall of the lock housing (1); and the first reset member (7) is gradually compressed when the sliding frame (5) moves outward.

5. The magnetic lock core according to claim 4, characterized in that: A shock absorbing block (19) is fixed or integrally provided at the rear end of the lock housing (1) corresponding to the second sliding portion (17); the second sliding portion (17) can abut against the shock absorbing block (19) when it retracts toward the inside of the lock housing (1).

6. The magnetic lock core according to claim 4, characterized in that: The head (15) is embedded with a magnetic component (20) and a head cover (21) that covers the head (15) and seals the magnetic component (20).

7. The magnetic lock core according to claim 4, characterized in that: The lock housing (1) comprises an upper housing (22) and a lower housing (23); a through hole (24) is provided on the upper housing (22); a connecting column (25) is provided in the lower housing (23) and is located between the first sliding portion (16) and the second sliding portion (17); an internal threaded hole is provided in the connecting column (25); and a threaded member (26) is provided at the through hole (24) and is threadedly connected to the internal threaded hole of the connecting column (25).

8. The magnetic lock core according to claim 7, characterized in that: The lock housing (1) is provided with a U-shaped sleeve (27) for fixing the upper housing (22) and the lower housing (23) together. The U-shaped sleeve (27) is provided with an oblong hole (28), and the oblong hole (28) corresponds to the position of the through hole (24).

9. The magnetic lock core according to claim 1, characterized in that: The reset frame (6) is provided with a long groove (29) along its length direction, the dial wheel (3) is provided with a paddle (30) extending into the long groove (29), the inner wall at the rear end of the long groove (29) is provided with a contact surface (31) which can cooperate with the paddle (30), the paddle (30) contacts the contact surface (31) of the long groove (29), the dial wheel (3) rotates to enable the sliding frame (5) to drive the lock tongue (2) to slide backward into the lock housing (1), the second reset member (8) is provided as a spring and the second reset member (8) is provided at one end of the reset member away from the sliding frame (5), and the two ends of the second reset member (8) respectively contact the sliding frame (5) and the inner wall of the lock housing (1).

10. The magnetic lock core according to claim 9, characterized in that: The paddle (30) is always in contact with the contact surface (31); a positioning portion (32) is provided on the side of the dial wheel (3) relative to the paddle (30); when the dial wheel (3) is not operated, the paddle (30) and the positioning portion (32) are in an inclined state; a limiting area (33) is formed on the inner wall of the lock housing (1) corresponding to the side of the positioning portion (32); a first limiting portion (34) and a second limiting portion (35) are provided on both sides of the limiting area (33) and can be in contact with the positioning portion (32); the first limiting portion (34) and the second limiting portion (35) are located on the rotation path of the positioning portion (32).

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