Magnetic attraction lock cylinder

Abstract

The utility model discloses a magnetic attraction lock cylinder which comprises a lock body, a lock frame, a shifting wheel and a shifting piece. The shifting piece is pivoted in the lock body through a hinge part, and a short swing arm and a long swing arm extend from the two sides of the shifting piece. A torsional spring is arranged in the lock body, so that the end part of the short swing arm is always in contact with the shifting part of the shifting wheel; the tail end of the long swing arm extends to a driving area of the lock frame. When the shifting wheel is rotated, the shifting part pushes the short swing arm, the shifting piece rotates around the hinge part, then the long swing arm pushes the lock frame to slide backwards, and the magnetic attraction spring bolt is driven to retract into the lock body. Power is transmitted through the lever type shifting piece, small-angle rotation of the shifting wheel is effectively converted into linear motion of the lock frame, the magnetic attraction lock cylinder has the advantages of being labor-saving in operation, compact in structure, stable in transmission, adjustable in hand feeling and the like, and the problems that a traditional magnetic attraction lock cylinder is large in resistance, high in needed magnetic force and the like due to overall movement of the lock frame are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lockset, especially to a magnetic lock cylinder. BACKGROUND

[0002] The magnetic lock cylinder is a common door lock structure, which realizes the extension of the lock tongue and the cooperation of the door frame lock box through magnetic attraction, and realizes the retraction of the lock tongue through the rotation of the dial, and completes the unlocking. In the existing design of the magnetic lock cylinder, such as the scheme disclosed in Chinese patent CN223018365U, the transmission structure is usually that the dial directly drives the lock frame to slide. Specifically, the dial piece on the dial extends into the long slot of the lock frame (usually composed of a reset frame and a sliding frame), and when the dial is rotated, the dial piece directly pushes or pulls the entire lock frame to move backward to realize the retraction of the lock tongue.

[0003] This direct driving mode of "dial-lock frame" has obvious inherent defects. First of all, in order to bear and transmit the direct driving force of the dial, and set up the corresponding matching structure (such as the long slot), the lock frame must have enough structural strength and volume, which leads to the overall structure being relatively large and heavy. This not only increases the space occupation inside the lock cylinder, but also makes the mass inertia of the lock frame in the movement process larger.

[0004] Secondly, the larger volume and mass of the lock frame directly lead to the increase of friction resistance and movement inertia when it moves. This disadvantage is particularly prominent in the magnetic attraction process: when the external magnet attracts the lock tongue to extend through magnetic force, it needs to overcome greater resistance. Therefore, in order to ensure that the lock tongue can be reliably attracted out, a magnet with stronger magnetic force must be selected, which undoubtedly increases the material cost and power consumption of the product, and is limited in the application scene of miniaturization and low power consumption.

[0005] In addition, since it is directly driven, the dial needs to be rotated by a large angle to provide enough stroke to pull the entire lock frame, which limits the operation feel and the structure design of the dial itself. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the shortcomings and deficiencies of the prior art, and provides a magnetic lock cylinder.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a magnetic lock cylinder, including lock body, slidingly installed in the lock body lock frame and rotationally installed in the lock body handle, the front end of lock frame is connected with magnetic lock tongue, still include a knob, the knob is rotatably pivoted in the lock body through the hinged part, and has the short swing arm and long swing arm which extend to both sides from the hinged part, the torsional spring of the short swing arm is provided in the lock body and is used for the elastic force of the short swing arm, to make the end of short swing arm always keep contact with the knob of handle, the end of long swing arm extends to the drive area of lock frame, when handle rotates, the short swing arm is pushed through knob, and knob is driven to rotate around the hinged part, and then the lock frame is pushed back by long swing arm and drives magnetic lock tongue to retract into the lock body.

[0008] As a preferred technical scheme of the utility model, the lock body is fixed with a positioning shaft, the positioning shaft is arranged in the hinged part of the knob, the torsional spring is sleeved on the positioning shaft, and the two free ends of the torsional spring are elastically abutted on the inner wall of the lock body and the hinged part of the knob respectively, so as to provide the elastic force of the short swing arm which always biases towards the knob of handle.

[0009] As a preferred technical scheme of the utility model, the lock body is provided with a limiting groove, the handle is partially accommodated in the limiting groove and can rotate along the limiting groove, the side wall of the limiting groove is provided with a first limiting surface and a second limiting surface, and the first limiting surface and the second limiting surface are used for limiting the initial position and the terminal position of the handle on the rotating path respectively.

[0010] As a preferred technical scheme of the utility model, the lock body is provided with an installation groove at the rear end of the handle, and a compression spring is accommodated in the installation groove, the lock body is provided with a slidable plug plate between the limiting groove and the installation groove, one end of the plug plate is abutted on the compression spring, and the other end of the plug plate is abutted on the handle, when the handle rotates from the initial position to the terminal position, the knob pushes the short swing arm to make the torsional spring store energy, and the plug plate extrudes the compression spring to make the compression spring store energy.

[0011] As a preferred technical scheme of the utility model, the limiting groove and the installation groove form a plug opening for the plug plate to slide.

[0012] As a preferred technical scheme of the utility model, the installation groove is provided with a plug pin which is oppositely arranged with the plug plate, one end of the plug pin is inserted into the compression spring, and the lock body is further provided with an adjusting screw which is threadedly connected, the inner end of the adjusting screw is abutted on the other end of the plug pin, and the pre-tightening force of the compression spring is changed by screwing the adjusting screw.

[0013] As a preferred technical scheme of the utility model, the lock frame is provided with a long groove along the sliding direction of the lock frame, the end of the long swing arm extends into the long groove, and the long swing arm can be in contact with the rear end abutting surface of the long groove.

[0014] As a preferred technical scheme of the utility model, the outer wall of the lock body is provided with an operation hole corresponding to the long slot.

[0015] As a preferred technical scheme of the utility model, the lock body comprises a lock shell and a cover, the side wall of the lock shell is provided with an assembly window, the cover is profile-fitted with the assembly window, and the cover and the lock shell are connected through fasteners.

[0016] Compared with the prior art, the utility model has the beneficial effects that: by setting the poking member composed of the short swing arm and the long swing arm, a lever transmission system is formed. When the dial is rotated, its small rotation is amplified through the poking member, and the long swing arm is used as an effective space compensation component to directly drive the lock holder and the lock tongue to retract. This design separates the driving function from the lock holder, so that the lock holder does not need to be designed to be too large in order to cooperate with the dial, the volume and weight of the lock holder are significantly reduced, the compactness of the internal structure of the lock cylinder is realized, and the movement resistance when the lock tongue is sucked out is reduced. The structure significantly reduces the rotation amplitude of the dial required to drive the lock tongue to retract, and improves the operation speed and experience. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 is a structural schematic view of the utility model without the cover;

[0019] Figure 3 is a structural schematic view of the cooperation of the dial, the lock holder and the poking member in the utility model;

[0020] Figure 4 is a structural schematic view of the cooperation of the plug, the bolt and the compression spring in the utility model.

[0021] Reference signs: 1, lock body; 2, lock holder; 3, dial; 4, magnetically attracted lock tongue; 5, poking member; 6, hinged part; 7, short swing arm; 8, long swing arm; 9, torsional spring; 10, poking part; 11, positioning shaft; 12, limiting groove; 13, first limiting surface; 14, second limiting surface; 15, mounting groove; 16, compression spring; 17, plug; 18, plug hole; 19, bolt; 20, adjusting screw; 21, long slot; 22, abutting surface; 23, operation hole; 24, assembly window; 25, cover; 26, free end. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "set with", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0024] As Figures 1-4 The utility model discloses a kind of magnetic lock cylinder as shown in the drawing, including lock body 1, the lock frame 2 of sliding installation in lock body 1 and the tumblers 3 of rotation installation in lock body 1, the front end of lock frame 2 is connected with magnetic lock tongue 4, further include a knob 5, knob 5 is pivotally connected in lock body 1 by hinging portion 6 rotatably, and with short swing arm 7 and long swing arm 8 extending to both sides by hinging portion 6;Lock body 1 is equipped with torsion spring 9 to short swing arm 7 to apply elastic force, to make the end of the short swing arm 7 always keep contact with the knob 3 of the knob 3 driving part 10;The end of long swing arm 8 extends to the driving area of the lock frame 2, when tumblers 3 rotates, short swing arm 7 is pushed by knob 3 driving part 10, drive knob 5 rotates around hinging portion 6, in turn, lock frame 2 is pushed back by long swing arm 8 and drives magnetic lock tongue 4 to retract lock body 1, it needs to be explained, magnetic lock tongue 4 in the embodiment is prior art itself.Usually include magnetic member and shell structure, mutually adsorbed by magnetic force and lock box (or called buckle box) on door frame, to realize the closure of door.The innovation point of the present application is the internal transmission mechanism for driving the lock tongue to retract, not the structure of the lock tongue itself, so it is not described here.

[0025] By setting knob 5 consisting of short swing arm 7 and long swing arm 8, a lever transmission system is formed.When tumblers 3 rotates, its small amplitude rotation is amplified via knob 5, and long swing arm 8 is directly used as effective space compensation component to drive lock frame 2 and lock tongue to retract.This design separates the driving function from lock frame 2, so that lock frame 2 does not need to be designed too long and large to cooperate with tumblers 3, its volume and weight are significantly reduced, so that the compactness of lock cylinder internal structure is realized, and the movement resistance when lock tongue is sucked out is reduced, the structure makes the rotation amplitude of tumblers 3 required to drive lock tongue to retract significantly reduced, and the operation speed and experience are improved.

[0026] Lock body 1 is fixed with a positioning shaft 11, the positioning shaft 11 is provided in the hinging portion 6 of the knob 5;The torsion spring 9 is sleeved on the positioning shaft 11, and the two free ends 26 thereof are elastically abutted against the inner wall of the lock body 1 and the hinging portion 6 of the knob 5 respectively, for providing the short swing arm 7 with elastic force always biased towards the knob 3 driving part 10.

[0027] The lock body 1 is provided with a limiting groove 12, the dial 3 is partially accommodated in the limiting groove 12 and can rotate along the limiting groove 12; the side wall of the limiting groove 12 is provided with a first limiting surface 13 and a second limiting surface 14, which are respectively used for limiting the starting position and the ending position of the dial 3 on the rotating path. In the application, the rotating angle of the dial 3 is preferably in the range of 5° to 30°, and the rotating angle is specifically designed as 10°, 11° or 15°, etc., which is not limited according to the actual situation.

[0028] The lock body 1 is provided with a mounting groove 15 at the rear end of the dial 3, and a compression spring 16 is accommodated in the mounting groove 15; the lock body 1 is provided with a slidable plug plate 17 between the limiting groove 12 and the mounting groove 15, one end of the plug plate 17 abuts against the compression spring 16, and the other end abuts against the dial 3; when the dial 3 rotates from the starting position to the ending position, the dialing part 10 pushes the short swing arm 7 to make the torsional spring 9 store energy, and at the same time, the plug plate 17 extrudes the compression spring 16 to store energy. In the embodiment, the limiting groove 12 and the mounting groove 15 form a plug hole 18 for the sliding of the plug plate 17.

[0029] The mounting groove 15 is provided with a plug pin 19 opposite to the plug plate 17, one end of the plug pin 19 is inserted into the compression spring 16; the lock body 1 is further provided with a adjusting screw 20 which is threadedly connected, the inner end of the adjusting screw 20 abuts against the other end of the plug pin 19; the pre-tightening force of the compression spring 16 is changed by rotating the adjusting screw 20. By rotating the exposed adjusting screw 20, the plug pin 19 can be accurately pushed to change the pre-tightening force of the compression spring 16. This adjustment directly acts on the damping force required to be overcome when the dial 3 rotates, so that the operation torque of the dial 3 can be personalized according to user preference, thereby providing various operation feelings from light and smooth to heavy and stable, enriching the senior feeling and user experience of the product. When assembling, the adjusting screw 20 can be loosened in advance, so that the plug pin 19 can move to the rear end, thereby leaving sufficient, uncompressed or only slightly compressed mounting space for the compression spring 16 in the mounting groove 15. The operator can easily place the compression spring 16 in this space without resisting the full elastic force at the initial stage of assembly. After the spring is in place, the adjusting screw 20 is tightened again to gradually push the plug pin 19 to compress the compression spring 16 to the required pre-tightening state.

[0030] The lock frame 2 is provided with a long slot 21 along the sliding direction of the lock frame 2, the long swing arm 8 extends into the long slot 21 and the end of the long swing arm 8 can be in contact with the rear end abutting surface 22 of the long slot 21. During the retraction of the lock bolt, the end of the long swing arm 8 is in contact with the rear end abutting surface 22 of the long slot 21 of the lock frame 2 and forms a rigid abutment. With the continuous rotation of the dial 3, the long swing arm 8 continues to swing with the end continuously and stably abutting on the abutting surface 22, thereby generating a pushing force directly acting on the sliding direction of the lock frame 2. The pushing force is linearly applied with the swinging of the swing arm, so that the entire lock frame 2 is smoothly and reliably driven to slide backward against the resistance, and finally the complete retraction of the lock bolt is realized.

[0031] The outer wall of the lock body 1 is provided with an operation hole 23 corresponding to the position of the long slot 21. By providing the operation hole 23 corresponding to the long slot 21 of the lock frame 2 on the outer wall of the lock body 1, a standby mechanical unlocking channel in emergency is provided. When the electronic system or the normal transmission mechanism fails, a common tool such as a screwdriver can be used to directly push the lock frame 2 through the operation hole 23 to forcibly drive the lock bolt to retract, thereby realizing emergency unlocking and greatly enhancing the reliability and safety of the lock cylinder.

[0032] The lock body 1 comprises a lock shell and a face cover 25, the side wall of the lock shell is provided with an assembly window 24, the face cover 25 is profile-fitted with the assembly window 24, and the face cover 25 is connected with the lock shell through fasteners. The split design of the lock shell and the detachable face cover 25 provides great convenience for on-site debugging and later maintenance of the lock cylinder. When it is necessary to overhaul or replace the internal dial 3, torsional spring 9 and other components, it is not necessary to destroy or disassemble the entire lock body 1, and only the face cover 25 needs to be removed to directly expose all internal mechanisms, so that the assembly and maintenance work becomes simple and fast.

[0033] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A magnetic lock cylinder, comprising a lock body (1), a lock holder (2) slidingly installed in the lock body (1), and a dial (3) rotatably installed in the lock body (1), a magnetic lock tongue (4) being connected to a front end of the lock holder (2), characterized in that: Also include a toggle element (5), the toggle element (5) is rotatably pivoted in the lock body (1) through the hinge (6), and has the short swing arm (7) and long swing arm (8) which extend to both sides by the hinge (6); The lock body (1) is provided with torsion spring (9) to the short swing arm (7) and applies elastic force, so that the end of the short swing arm (7) always keeps in contact with the toggle part (10) of the dial (3); The end of the long swing arm (8) extends to the drive area of the lock holder (2), when the dial (3) rotates, the short swing arm (7) is pushed by the toggle part (10), the toggle element (5) is driven to rotate around the hinge (6), and then the lock holder (2) is pushed by the long swing arm (8) to slide back and drive the magnetic attraction lock tongue (4) to retract into the lock body (1).

2. The magnetic lock core of claim 1, wherein: The lock body (1) is fixed with a positioning shaft (11), the positioning shaft (11) is provided in the hinge (6) of the toggle element (5); The torsion spring (9) is sleeved on the positioning shaft (11), and the two free ends (26) thereof are respectively elastically abutted against the inner wall of the lock body (1) and the hinge (6) of the toggle element (5), for providing the short swing arm (7) with an elastic force always biased towards the toggle part (10) of the dial (3).

3. The magnetic lock core of claim 1, wherein: The lock body (1) is provided with a limiting groove (12), and the dial (3) is partially accommodated in the limiting groove (12) and can rotate along the limiting groove (12); The side wall of the limiting groove (12) is provided with a first limiting surface (13) and a second limiting surface (14), respectively used for limiting the starting position and the ending position of the dial (3) on the rotating path.

4. The magnetic lock core of claim 3, wherein: The lock body (1) is provided with a mounting groove (15) located at the rear end of the dial (3), and a compression spring (16) is accommodated in the mounting groove (15); The lock body (1) is provided with a slidable plug plate (17) between the limiting groove (12) and the mounting groove (15), one end of the plug plate (17) abuts against the compression spring (16), and the other end abuts against the dial (3); When the dial (3) rotates from the starting position to the ending position, the toggle part (10) of the dial (3) pushes the short swing arm (7) to store energy of the torsion spring (9), and the plug plate (17) presses the compression spring (16) to store energy.

5. The magnetic lock core of claim 4, wherein: The limiting groove (12) and the mounting groove (15) form a plug opening (18) for the plug plate (17) to slide.

6. The magnetic lock core of claim 4, wherein: The mounting groove (15) is provided with a plug pin (19) arranged opposite to the plug plate (17), one end of the plug pin (19) is inserted into the compression spring (16); The lock body (1) is also threadedly connected with an adjusting screw (20), the inner end of the adjusting screw (20) abuts against the other end of the plug pin (19); The pre-tightening force of the compression spring (16) can be changed by rotating the adjusting screw (20).

7. The magnetic lock core of claim 1, wherein: The lock holder (2) is provided with a long groove (21) along the sliding direction thereof, the end of the long swing arm (8) extends into the long groove (21), and the long swing arm (8) can touch the rear end abutting face (22) of the long groove (21).

8. The magnetic lock core of claim 7, wherein: The outer wall of the lock body (1) is provided with an operation hole (23) corresponding to the position of the long groove (21).

9. The magnetic lock core of claim 1, wherein: The lock body (1) comprises a lock shell and a face cover (25), the lock shell is provided with an assembly window (24), the face cover (25) is profile-fitted with the assembly window (24), and the face cover (25) is connected with the lock shell through fasteners.

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