Magnetic attraction lock cylinder

Abstract

The utility model relates to the technical field of locks, in particular to a magnetic attraction lock cylinder which comprises a lock shell, a spring bolt and a transmission assembly, the spring bolt is connected with the transmission assembly, one end of the lock shell for the spring bolt to stretch out and draw back is provided with an installation portion, and the lock shell is provided with a fixing clamping sleeve in a front-back sliding mode in the stretching-out and drawing-back direction of the spring bolt. The lock shell is provided with a screw rod parallel to the stretching and retracting direction of the spring bolt, the screw rod is in threaded connection with a movable block protruding out of the lock shell, the movable block abuts against the rear side of the fixed clamping sleeve in the stretching and retracting direction of the spring bolt, and through mutual matching of the mounting part on the lock shell and the arranged fixed clamping sleeve, the door body can be clamped and fixed through the movable block. The lock shell is provided with the screw rod and the movable block which are connected with each other, people only need to screw the movable block to enable the fixed clamping sleeve to be gradually close to the mounting part, the door body can be clamped, the lock cylinder can be fixedly mounted on the door body, the movable block protrudes out of the lock shell, people can mount the lock cylinder conveniently, meanwhile, the stability of the lock cylinder is improved, and the lock cylinder is prevented from loosening.

Description

Technical Field

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

[0002] The lock core is an indispensable accessory of the lock. After the traditional lock is installed on the swing door body, the lock core of the lock protrudes from the surface of the lock. When the swing door body is in the open state, the lock core on the swing door body is easy to hook the passerby. Therefore, a magnetic lock core is invented now. Referring to the public (announcement) number: CN220319324U, a magnetic silent lock core can be known. The lock tongue of the magnetic lock core is in the lock shell. In the closed state, the lock tongue and the lock seat are magnetically attracted to each other, so that the lock tongue is sucked out of the lock shell to achieve the locking effect. The profile of the door body will be provided with an installation hole for the lock core to be placed in. At the same time, the glass or plate panels of the door body will also be provided with a space for accommodating the lock core. When installing, the core needs to be inserted through the profile mounting hole first, so that the mounting part of the lock shell rests on the side of the door profile, and then the positioning sleeve is moved until it rests on the door profile and then the positioning sleeve is fixed with screws, so that the positioning sleeve and the mounting part are clamped and fixed on the door profile. However, such an installation structure is very troublesome to operate, and it is necessary to manually force the positioning sleeve against the door profile, and then tighten the screws to fix the positioning sleeve. At the same time, it is difficult for people to exert force during the operation, and a large force is needed to push the positioning sleeve to the frame, and then tighten the screws to compact the positioning sleeve. This installation structure is not conducive to people's use, and such an installation method is prone to shrinkage and loosening. Utility Model Content

[0003] The utility model provides a magnetic lock core, so as to facilitate people to fix the lock core on the door body and improve the stability of the lock core.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic lock core, comprising a lock shell, a lock tongue and a transmission assembly, the lock tongue and the transmission assembly are connected to each other, the lock shell is provided with a mounting portion at one end for the lock tongue to be extended and retracted, the lock shell is provided with a fixed sleeve that slides back and forth in the extension and retraction direction of the lock tongue, and is used to cooperate with the mounting portion to clamp and fix the door body, the lock shell is provided with a screw parallel to the extension and retraction direction of the lock tongue, the screw is threadedly connected with a movable block protruding from the lock shell, and the movable block abuts against the rear side of the fixed sleeve in the extension and retraction direction of the lock tongue.

[0005] Furthermore, the lock shell is fixedly connected to an outer cover, and the outer cover and the lock shell are both provided with strip holes parallel to the extension and retraction direction of the lock tongue, the movable block protrudes from the lock shell and the outer cover through the strip holes, and the two ends of the screw are respectively fixedly connected to the lock shell, and the middle part corresponds to the strip hole.

[0006] Furthermore, the front side of the mounting portion is a flat surface, a mounting groove is provided at the rear end of the mounting portion, a buckle strip that is buckled into the mounting groove is provided at one end of the outer cover, and the other end is fixedly connected to the lock housing by screws.

[0007] Furthermore, the fixing jacket is U-shaped, and is provided with protrusions on both upper and lower sides, and the lock shell and the outer cover are provided with avoidance channels corresponding to the protrusions on both upper and lower sides.

[0008] Furthermore, the movable block is in the shape of a circular ring, and is provided with an inner thread on the inner side for being threadedly connected to the screw rod, and is provided with a plurality of through holes in the shape of a ring on the outer side.

[0009] Furthermore, the transmission assembly includes a square sleeve, a first swing arm and a second swing arm, one end of the second swing arm is hinged to the top of the square sleeve, and the other end is hinged to the middle of the first swing arm, the first swing arm is arranged at the rear end of the screw, and its bottom end is rotatably connected to the lock housing, and the rear side of the top end abuts against the lock tongue.

[0010] Furthermore, the locking tongue includes a telescopic block and a connecting frame, and a transmission part abutting against the first swing arm is provided at the top end of the connecting frame.

[0011] Furthermore, the second swing arm is Z-shaped as a whole, a first hinge part for hingedly connecting one end of the second swing arm is arranged at an eccentric position on the top of the square sleeve, and a second hinge part for hingedly connecting the other end of the second swing arm is arranged at the lower part of the first swing arm.

[0012] Furthermore, a lock seat is included, wherein a magnetic block and a partition are arranged in the lock seat, the magnetic block is arranged in the lock seat groove, the partition is arranged at the lock seat groove, and a spring is arranged between the partition and the magnetic block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: through the mutual cooperation between the mounting portion and the fixed sleeve on the lock shell, and the mutual connected screw and movable block are provided on the lock shell, people only need to twist the movable block to make the fixed sleeve gradually approach the mounting portion, so as to achieve the clamping of the door body, so that the lock core can be fixedly installed on the door body, and the movable block protrudes outward from the lock shell, which is beneficial for people to install the lock core, and at the same time improves the stability of the lock core to prevent it from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the installation diagram of the utility model.

[0015] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the lock core in the utility model.

[0016] Figure 3 It is a schematic diagram of the internal structure of the lock core in the utility model.

[0017] Figure 4This is a front angle stereogram of the lock core of the utility model.

[0018] Figure 5 This is a three-dimensional view of the lock core in the utility model from the back side.

[0019] Figure 6 It is a cross-sectional view of the lock seat in the utility model.

[0020] Figure 7 It is a distribution diagram of the fixed jacket, the screw rod and the movable block in the utility model.

[0021] Figure 8 It is a structural schematic diagram of the lock tongue in the utility model.

[0022] In the figure: lock shell 1, lock tongue 2, fixed sleeve 4, screw 5, lock seat 6, outer cover 10, mounting part 11, telescopic block 21, connecting frame 22, square shaft sleeve 30, first swing arm 31, second swing arm 32, movable block 50, magnetic block 61, partition 62, strip hole 100, mounting groove 111, buckle strip 112, transmission part 221, limiting part 222, tension spring 300, first hinge part 321, second hinge part 322, protrusion 400, avoidance channel 401, through hole 500, spring 600. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As shown in the attached drawings, the utility model is a magnetic lock core, including a lock shell 1, a lock tongue 2 and a transmission component, and also includes a lock seat 6. The lock tongue 2 and the transmission component are connected to each other. The lock shell 1 is provided with a mounting portion 11 at one end for the lock tongue 2 to be extended and retracted. The lock shell 1 is provided with a fixed jacket 4 that slides forward and backward in the extension direction of the lock tongue 2, and is used to cooperate with the mounting portion 11 to clamp and fix the door body. The lock shell 1 is provided with a screw rod 5 parallel to the extension direction of the lock tongue 2. The screw rod 5 is threadedly connected with a movable block 50 protruding from the lock shell 1, and the movable block 50 abuts against the rear side of the fixed jacket 4 in the extension direction of the lock tongue 2. Reference for the extension direction of the lock tongue 2 Figure 3, viewed from the telescopic direction of the lock tongue 2, the screw 5 is laid in the lock shell 1 from front to back, the movable block 50 moves along the length direction of the screw 5, the fixed jacket 4 is arranged between the movable block 50 and the mounting portion 11, and can abut against the movable block 50. It should be noted that the fixed jacket 4 has no connection with the movable block 50. The movable block 50 moves forward to push the fixed jacket 4 close to the mounting portion 11. The fixed jacket 4 and the lock shell 1 are connected in a front-to-back sliding manner. In order to ensure the linear movement of the fixed jacket 4, a sliding portion can be arranged in the fixed jacket 4, and a slide groove can be arranged outside the lock shell 1.

[0025] The lock base 6 is also included. The lock base 6 is one of the accessories of the existing magnetic lock. The lock base 6 is provided with a groove for setting a magnetic block 61. The lock base 6 of the present design is provided with a magnetic block 61 and a partition 62. The magnetic block 61 is arranged in the groove of the lock base 6. The partition 62 is arranged at the notch of the lock base 6. The notch of the lock base 6 is shielded by the additional partition 62, so that dust and other impurities can be prevented from entering the lock base 6. At the same time, the notch of the lock base 6 is filled, making the lock base 6 more beautiful. The partition 62 A spring 600 is arranged between the lock tongue 2 and the magnetic block 61. When the lock tongue 2 is inserted into the lock seat 6, the lock tongue 2 first hits the partition 62. The partition 62 is used to separate the direct collision contact between the lock tongue 2 and the magnetic block 61 to reduce noise. After the lock tongue 2 withdraws from the lock seat 6, the partition 62 protrudes to the slot position again due to the recovery of the spring 600. The partition 62 can be made of soft plastic, etc. It should be noted that the spring 600 has a relatively low hardness and does not affect the mutual attraction between the lock tongue 2 and the magnetic block 61.

[0026] The utility model discloses a magnetic lock core with a principle and effect. The mounting portion 11 on the lock shell 1 and the fixed jacket 4 cooperate with each other, and the lock shell 1 is provided with a screw 5 and a movable block 50 which are connected to each other. When installing, the lock core is first placed as a whole into the door body profile and inserted through the mounting hole on the side of the profile. People only need to twist the movable block 50 so that the movable block 50 pushes the fixed jacket 4 to gradually approach the mounting portion 11, that is, the door body is clamped by the mounting portion 11 and the fixed jacket 4, so that the lock core can be fixedly installed on the door body. Moreover, the movable block 50 protrudes from the lock shell 1, which is beneficial for people to install the lock core. At the same time, the stability of the lock core is improved to prevent it from loosening.

[0027] In this embodiment, the lock housing 1 is fixedly connected with the outer cover 10. The outer cover 10 and the lock housing 1 are both provided with a strip hole 100 parallel to the extension direction of the lock tongue 2. The movable block 50 protrudes from the lock housing 1 and the outer cover 10 through the strip hole 100. The two ends of the screw 5 are respectively fixedly connected to the lock housing 1, and the middle part thereof corresponds to the strip hole 100. The screw 5 belongs to the fixed end, and the fixed jacket 4 abuts against the front side of the movable block 50. By twisting the movable block 50, the movable block 50 pushes the fixed jacket 4 forward and approaches the mounting portion 11. The strip holes 100 on the outer cover 10 and the lock housing 1 can be set to different sizes, but need to correspond to the center. The front side of the mounting portion 11 is a plane portion, and the mounting portion 11 is provided with an inlet and outlet hole for the extension and contraction of the lock tongue 2. The rear end of the mounting portion 11 is provided with a mounting groove 111. One end of the outer cover 10 is provided with a buckle strip 112 buckled in the mounting groove 111, and the other end is fixedly connected to the lock housing 1 by screws. The flat-designed mounting portion 11 is neater and more beautiful than the traditional lock core mounting portion 11 , and does not require a mounting hole for mounting the door body, thereby facilitating the installation of the outer cover 10 and the lock housing 1 .

[0028] like Figure 5 As shown, the fixed jacket 4 is U-shaped, and protrusions 400 are provided on the upper and lower sides. The upper and lower sides of the lock shell 1 and the outer cover 10 are provided with avoidance channels 401 corresponding to the protrusions 400. When installing, first put the lock core and the outer cover 10 from the side of the profile and screw the movable block 50 to the rear end, and then put the fixed jacket 4 on the lock core. When inserting, align the protrusions 400 of the fixed jacket 4 and pass through the avoidance channel 401.

[0029] In this embodiment, the movable block 50 is annular, and the inner side is provided with an inner thread connected to the screw rod 5, and the outer side is provided with a plurality of through holes 500 in an annular shape. It is more convenient for people to twist the movable block 50. When the movable block 50 pushes the fixed jacket 4 to abut against the door profile, it is difficult for people to twist the movable block 50 to continue to move forward due to the obstruction of the door profile. At this time, people can use a tool to insert into the through hole 500 to twist the movable block 50.

[0030] like Figure 2-3As shown, the transmission assembly includes a square sleeve 30, a first swing arm 31 and a second swing arm 32, one end of the second swing arm 32 is hinged to the top of the square sleeve 30, and the other end is hinged to the middle of the first swing arm 31, the first swing arm 31 is arranged at the rear end of the screw 5, and its bottom end is rotatably connected to the lock housing 1, and the rear side of the top end abuts against the lock tongue 2. When the square sleeve 30 rotates, the first swing arm 31 will be driven through the second swing arm 32, so that the first swing arm 31 rotates with the point where the bottom end is rotatably connected to the lock housing 1 as the rotation point, thereby pushing the lock tongue 2 to move backward through the top end. The lock tongue 2 includes a telescopic block 21 and a connecting frame 22. The top of the connecting frame 22 is provided with a transmission part 221 that abuts against the first swing arm 31. The bottom of the connecting frame 22 is provided with a limiting part 222. The lock housing 1 is provided with a baffle in front of the limiting part 222, and a spring 600 is provided between the baffle and the limiting part 222. Under normal circumstances, the spring 600 will abut against the limiting part 222, and the thrust of the spring 600 is used to keep the lock tongue 2 in a retracted state, so that the lock tongue 2 will not protrude from the surface of the profile. When the door body is closed, the lock tongue 2 and the lock seat 6 attract each other, so that the lock tongue 2 extends out of the lock core, that is, the limiting part 222 moves forward and compresses the spring 600. Therefore, the force generated by the magnetic attraction of the lock seat 6 and the lock tongue 2 is greater than the elastic force of the spring 600; at the same time A tension spring 300 for resetting the handle is arranged in the lock housing 1. The top of the tension spring 300 is connected to the lock housing 1, and the bottom is connected to the eccentric part of the bottom of the square sleeve 30. When people turn the handle, the square sleeve 30 is rotated, thereby stretching the tension spring 300 while driving the first swing arm 31 and the second swing arm 32 to move. When the square sleeve 30 loses the force of people turning it, the tension spring 300 automatically resets, thereby driving the square sleeve 30 to return to the center, thereby keeping the handle in the center state. At the same time, after the square sleeve 30 is reset, the first swing arm 31 and the second swing arm 32 linked to it are also reset, thereby driving the lock tongue 2 to retract. When the lock tongue 2 retracts, it means that the limit part 222 moves backward, that is, the spring 600 recovers and presses against the limit part 222, giving the lock tongue 2 a backward thrust to prevent the lock tongue 2 from protruding. Figure 3The second swing arm 32 is in a Z-shape as a whole, and includes two transverse parts and a vertical part arranged between the two transverse parts. It should be noted that the connection angle between the two transverse parts and the vertical part is close to 90 degrees. In order to enable the square sleeve 30 to drive the first swing arm 31 and the second swing arm 32 to swing, the angle at the corner of the second swing arm 32 will be adjusted by about 10 degrees, and it does not need to be completely vertical to 90 degrees. The eccentric part of the top of the square sleeve is provided with a first hinge part 321 for hingedly connecting one end of the second swing arm, and the lower part of the first swing arm 31 is provided with a second hinge part 322 for hingedly connecting the other end of the second swing arm 32. The second hinge part 322 is arranged in the middle of the first swing arm 31. And close to the connection between the first swing arm 31 and the lock shell 1, the second hinge part 322 is preferably arranged at the golden ratio position of the length of the first swing arm 31, and one end of the horizontal part located at the lower part extends obliquely upward to connect the second hinge part 322. The eccentric angle of the first hinge part 321 can be set to 10 degrees, and the eccentric part of the bottom of the square sleeve 30 protrudes with a protrusion connected to the tension spring 300. The eccentric angle of the protrusion can be set to 30 degrees. The opening angle of the lock core is smaller than the opening angle of 45 degrees of the existing lock core. If it is implemented according to the preferred scheme combined with the accompanying drawings, the opening angle can be controlled to about 20 degrees, so that the unlocking effect can be achieved through a smaller opening angle.

[0031] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A magnetic lock core, comprising a lock housing, a lock tongue and a transmission assembly, wherein the lock tongue and the transmission assembly are connected to each other, characterized in that: The lock shell is provided with a mounting portion at one end for the extension and retraction of the lock tongue. The lock shell is provided with a fixed sleeve which slides back and forth in the extension and retraction direction of the lock tongue, and is used to cooperate with the mounting portion to clamp and fix the door body. The lock shell is provided with a screw rod parallel to the extension and retraction direction of the lock tongue. The screw rod is threadedly connected with a movable block protruding from the lock shell, and the movable block abuts against the rear side of the fixed sleeve in the extension and retraction direction of the lock tongue.

2. A magnetic lock core according to claim 1, characterized in that: The lock shell is fixedly connected to an outer cover, and the outer cover and the lock shell are both provided with strip holes parallel to the extension and retraction direction of the lock tongue. The movable block protrudes from the lock shell and the outer cover through the strip holes, and the two ends of the screw are respectively fixedly connected to the lock shell, and the middle part corresponds to the strip hole.

3. The magnetic lock core according to claim 2, characterized in that: The front side of the mounting portion is a flat surface, a mounting groove is arranged at the rear end of the mounting portion, a buckle strip which is buckled in the mounting groove is arranged at one end of the outer cover, and the other end is fixedly connected to the lock housing by screws.

4. The magnetic lock core according to claim 1, characterized in that: The fixing jacket is U-shaped, and is provided with protrusions on both upper and lower sides; and avoidance channels corresponding to the protrusions are provided on both upper and lower sides of the lock shell and the outer cover.

5. The magnetic lock core according to claim 1, characterized in that: The movable block is in the shape of a ring, and is provided with an inner thread on the inner side thereof for being threadedly connected to the screw rod, and is provided with a plurality of through holes in the shape of a ring on the outer side thereof.

6. The magnetic lock core according to claim 1, characterized in that: The transmission assembly includes a square sleeve, a first swing arm and a second swing arm, one end of the second swing arm is hinged to the top of the square sleeve, and the other end is hinged to the first swing arm, the first swing arm is arranged at the rear end of the screw, and its bottom end is rotatably connected to the lock housing, and the rear side of the top end abuts against the lock tongue.

7. The magnetic lock core according to claim 6, characterized in that: The locking tongue comprises a telescopic block and a connecting frame, and the top end of the connecting frame is provided with a transmission part abutting against the first swing arm.

8. The magnetic lock core according to claim 6, characterized in that: The second swing arm is Z-shaped as a whole, and a first hinge part for hingedly connecting one end of the second swing arm is arranged at an eccentric position on the top of the square sleeve, and a second hinge part for hingedly connecting the other end of the second swing arm is arranged at the lower part of the first swing arm.

9. The magnetic lock core according to claim 1, characterized in that: It also includes a lock seat, in which a magnetic block and a partition are arranged, the magnetic block is arranged in the lock seat groove, the partition is arranged at the lock seat groove, and a spring is arranged between the partition and the magnetic block.

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