Lock structure and lock

Abstract

The lock structure comprises a lock shell and an installation sleeve, the lower end of the installation sleeve is provided with a first opening allowing the lock shell to be installed in the installation sleeve, an anti-falling structure is arranged in the lock shell, and the anti-falling structure is configured to allow the lock shell to be installed in the installation sleeve from the first opening. After the lock shell is installed in the installation sleeve, the anti-falling structure is connected with the installation sleeve in a clamped mode so that the lock shell can be fixed in the installation sleeve. Due to the arrangement of the lock structure, the problem that in the prior art, in the long-time using process, a lock body is not stably installed due to vibration generated by door opening and closing is solved.

Description

Technical Field

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

[0002] Magnetic locks, also known as electromagnetic locks, are designed similarly to electromagnets and mainly use the principle that electric current generates a magnetic field to achieve the locking function. When the current passes through the silicon steel sheet of the lock body of the magnetic lock, it will generate a strong suction force, tightly sucking the adsorption iron plate, thereby achieving the effect of locking the door. Magnetic locks do not have a complex mechanical structure, so they are widely used in important places such as airports, subways, banks, prisons, smart buildings, smart communities, etc., providing users with convenient, fast and intelligent entrance and exit management.

[0003] At present, magnetic locks are generally installed on the top of the door. For example, the lock body is installed on the door body, and the matching adsorption iron plate is installed on the wall. When installing, the mounting plate is first installed on the inner wall of the top of the door with bolts, and then the lock body is installed on the mounting plate. However, during the long-term use of the existing magnetic lock, the vibration generated by the door switch may cause the lock body to fall, which is easy to cause safety hazards. Utility Model Content

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide a lock structure and a lock. The lock structure of the present invention improves the problem in the prior art that the lock body is unstable due to the vibration caused by opening and closing the door during long-term use.

[0005] According to one aspect of the utility model, a lock structure is provided, including a lock shell and a mounting sleeve, wherein the lower end of the mounting sleeve is provided with a first opening for the lock shell to be installed into the mounting sleeve, and an anti-falling structure is provided in the lock shell, and the anti-falling structure is configured to allow the lock shell to be installed into the mounting sleeve from the first opening, and after the lock shell is installed in the mounting sleeve, the anti-falling structure fixes the lock shell in the mounting sleeve by a snap-on connection with the mounting sleeve.

[0006] Further, the anti-falling structure includes two connecting rods, and each of the two opposite side walls of the lock housing is rotatably connected to the middle part of one of the connecting rods, and each of the side walls is provided with a through groove for the first end of the connecting rod rotatably connected thereto to pass through; the corresponding two sides of the mounting sleeve are provided with a card slot matching with the first end of each connecting rod;

[0007] A bottom plate is arranged in the lock housing, and the bottom plate can move up and down in the lock housing, and a retaining ring is fixedly connected to the second opening at the lower end of the lock housing, and the retaining ring is used to limit the bottom plate in the lock housing; two fixing brackets are fixedly connected to the bottom plate, each of the fixing brackets is fixedly connected to the side wall of the fixing column, and the lower end of each fixing column is fixedly connected to a hinge column, and the second end of the connecting rod of each connecting rod is provided with a sliding groove, and each of the hinge columns is located in the corresponding sliding groove, and the axial direction of each hinge column is perpendicular to the rotation direction of the corresponding connecting rod;

[0008] Keeping the base plate stationary, the lock shell moves downward under gravity to drive each of the connecting rods to move so that the first end of each connecting rod is respectively received in the corresponding through groove, and after the lock shell is fixed in the mounting sleeve and the base plate falls on the retaining ring, the first end of each connecting rod is stuck in the corresponding slot.

[0009] Furthermore, two sliding seats are fixedly connected to the top inner wall of the lock shell, each of the sliding seats is provided with a sliding groove extending upward from the lower end, each of the fixed columns extends into the corresponding sliding groove, and each of the sliding grooves is provided with a return spring. When the bottom plate falls on the retaining ring, the fixed column is still located in the sliding groove, and the two return springs are both in the original length state or in the compressed state.

[0010] Furthermore, each of the upper ends of the fixed columns extending into the corresponding sliding grooves is fixedly connected to a fixed block, and each of the lower ends of the sliding seats is fixedly connected to a limiting ring for limiting the fixed block in the sliding groove. Each of the fixed blocks can move up and down in the corresponding sliding groove, and when the base plate falls on the retaining ring, the fixed block contacts the limiting ring.

[0011] Furthermore, the lower end of each of the fixed columns is fixedly connected to two connecting blocks, each of the hinged columns is located between the corresponding two connecting blocks, and each of the hinged columns is fixedly connected to the corresponding two connecting blocks; in the opposite side walls of the lock housing, each of the side walls is fixedly connected to a hinge seat, and the middle part of each connecting rod is rotatably connected to the corresponding hinge seat; each of the connecting rods is an L-shaped structure.

[0012] Furthermore, each of the first ends of the connecting rods is fixedly connected with an anti-falling block, and each of the anti-falling blocks cooperates with the slot on the corresponding side of the mounting sleeve; the downward movement of the lock housing under gravity can enable each of the anti-falling blocks to be stored in the corresponding through slot; each of the anti-falling blocks can be snapped into the corresponding slot; and the sliding slots at the second ends of each of the connecting rods are oblong holes.

[0013] Furthermore, a plurality of limit blocks are fixedly connected to the upper end of the lock housing, and the mounting sleeve is provided with limit slots equal to the number of the limit blocks, and the mounting sleeves on both sides of each limit slot are provided with matching slots connected to the limit slots, and each matching slot is provided with a snap-connecting structure, and after each limit block is installed in the corresponding limit slot, the two snap-connecting structures in each limit slot are snap-connected with the corresponding limit block.

[0014] Furthermore, each of the clamping structures includes a limit spring and a buckle, one end of the limit spring is fixedly connected to the mounting sleeve, and the other end of the limit spring is fixedly connected to the buckle; each of the buckles has an arc-shaped structure on one side close to the limit block, and each of the corresponding two sides of the limit block is provided with a concave surface that cooperates with the arc structure; each of the limit springs is configured to enable the arc structure of the buckle to be clamped in the concave surface.

[0015] Furthermore, each of the buckles is a spherical structure.

[0016] According to another aspect of the utility model, a lock is provided, comprising any one of the lock structures described above.

[0017] It can be seen from the above technical solution that the utility model provides a lock structure and a lock having the following features:

[0018] Beneficial effects:

[0019] The lock structure of the utility model improves the problem in the prior art that the lock body is not firmly installed due to the vibration caused by the door opening and closing during long-term use;

[0020] The arrangement of the limiting block and the limiting groove of the utility model can facilitate the installation of the lock housing in the installation sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a lock structure according to an embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the lock structure of an embodiment of the utility model;

[0023] Figure 3 A cross-sectional view of one of the connecting rods of the lock structure of an embodiment of the utility model;

[0024] Figure 4 A schematic diagram of a sliding seat and a connecting rod portion of a lock structure according to an embodiment of the utility model;

[0025] Figure 5 for Figure 1 A partial enlarged view of point A in the middle.

[0026] The reference numerals in the figure are: 1. mounting sleeve; 2. lock housing; 3. retaining ring; 4. bottom plate; 5. fixing bracket; 6. fixing column; 7. sliding seat; 8. sliding groove; 9. reset spring; 10. connecting block; 11. hinge column; 12. hinge seat; 13. connecting rod; 131. first end 131 of connecting rod; 132. second end of connecting rod; 14. sliding groove; 15. anti-fall block; 16. through groove; 17. slot; 18. limit block; 19. limit groove; 20. matching groove; 21. limit spring; 22. buckle; 23. fixing block; 24. limit ring. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the utility model, a lock structure and a lock of the utility model are further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, it shows a lock structure of an embodiment of the utility model, including a lock shell 2 and a mounting sleeve 1, the lower end of the mounting sleeve 1 is provided with a first opening for the lock shell 2 to be installed into the mounting sleeve 1, and an anti-fall structure is provided in the lock shell 2, and the anti-fall structure is configured to allow the lock shell 2 to be installed into the mounting sleeve 1 from the first opening, and after the lock shell 2 is installed in the mounting sleeve 1, the anti-fall structure fixes the lock shell 2 in the mounting sleeve 1 by a snap connection with the mounting sleeve 1.

[0029] The lock structure of this embodiment includes a lock housing 2 and an installation sleeve 1, wherein a first opening is formed at the lower end of the installation sleeve 1. During installation, the lock housing 2 is installed into the installation sleeve 1 through the first opening of the installation sleeve 1.

[0030] Again, an anti-fall structure is provided in the lock housing 2. After the lock housing 2 is installed in the mounting sleeve 1, the anti-fall structure is snap-connected with the mounting sleeve 1. The snap-connection between the anti-fall structure and the mounting sleeve 1 can make the lock housing 2 more firmly fixed in the mounting sleeve 1, thereby preventing the lock housing 2 from falling.

[0031] Finally, the lock housing 2 of this embodiment can be the housing of a magnetic lock, or the housing of other locks installed on the top of the door body. The arrangement of the lock structure of this embodiment improves the problem of unstable installation of the lock body due to vibration caused by opening and closing the door during long-term use in the prior art.

[0032] In one embodiment, if Figure 2 , Figure 3 , Figure 4As shown, the anti-fall structure includes two connecting rods 13. In the opposite side walls of the lock housing 2, each side wall is rotatably connected to the middle part of a connecting rod 13, and each side wall is provided with a through groove 16 for the first end 131 of the connecting rod 13 rotatably connected thereto to pass through; the corresponding two sides of the mounting sleeve 1 are provided with a card slot 17 that cooperates with each first end 131 of the connecting rod; a bottom plate 4 is arranged in the lock housing 2, and the bottom plate 4 can move up and down in the lock housing 2, and a retaining ring 3 is fixedly connected to the second opening at the lower end of the lock housing 2, and the retaining ring 3 is used to limit the bottom plate 4 in the lock housing 2; two fixed brackets 5 are fixedly connected to the bottom plate 4, and each fixed bracket 5 is The side wall of the fixed column 6 is fixedly connected, and the lower end of each fixed column 6 is fixedly connected with a hinge column 11. The second end 132 of each connecting rod 13 is provided with a slide groove 14. Each hinge column 11 is located in the corresponding slide groove 14, and the axial direction of each hinge column 11 is perpendicular to the rotation direction of its corresponding connecting rod 13; keeping the bottom plate 4 stationary, the lock housing 2 moves downward under gravity to drive each connecting rod 13 to move so that each connecting rod first end 131 is respectively received in the corresponding through groove 16, and after the lock housing 2 is fixed in the mounting sleeve 1 and the bottom plate 4 falls on the retaining ring 3, each connecting rod first end 131 is stuck in the corresponding slot 17.

[0033] like Figure 2 As shown, the left and right side walls of the lock housing 2 are respectively rotatably connected to the middle part of a connecting rod 13, and a through groove 16 is provided on the left and right side walls of the lock housing 2, and the through groove 16 is used for the connecting rod 13 to pass through during the rotation process; the rotation of the two connecting rods 13 can make the two connecting rods 13 be received in the corresponding through groove 16, or make the two connecting rods 13 pass through the corresponding through groove 16 and extend out of the through groove 16.

[0034] The retaining ring 3 is fixedly connected to the second opening of the lock housing 2, and the retaining ring 3 is used to limit the bottom plate 4 in the lock housing 2. The bottom plate 4 is located in the lock housing 2 and can move up and down in the lock housing 2. Since the bottom plate 4 and the lock housing 2 can move up and down relative to each other, when the bottom plate 4 is dragged by hand, the lock housing 2 can move downward under the action of gravity.

[0035] The two fixed columns 6 are fixed on the base plate 4 through two fixed brackets 5 respectively. Each fixed column 6 is hingedly connected to the second end 132 of the connecting rod through a hinge column 11 and a slide groove 14. The setting of the slide groove 14 enables the hinge column 11 to slide left and right along the inner wall of the slide groove 14, thereby ensuring that the fixed column 6 can drive the connecting rod 13 to rotate when sliding up and down.

[0036] The downward movement of the lock housing 2 correspondingly drives the two connecting rods 13 to move. The movement of the two connecting rods 13 includes following the downward movement of the lock housing 2 and the rotation of the second end 132 of the connecting rod relative to the hinge column 11. Specifically, since the second end 132 of the connecting rod is hinged to the hinge column 11, and the hinge column 11 is fixed to the fixed column 6, when the connecting rod 13 moves downward and the hinge column 11 does not move, the connecting rod 13 will rotate while moving downward, and the hinge column 11 will be fixed to the fixed column 6. Figure 2 For example, as a result of the rotation of the two connecting rods 13 , the two connecting rod first ends 131 gradually approach each other, and finally, each connecting rod first end 131 is received in the corresponding through slot 16 .

[0037] The first end 131 of each connecting rod is respectively received in the corresponding through groove 16, so that the lock housing 2 can be conveniently installed into the installation sleeve 1 from the first opening. During the specific installation, the bottom plate 4 is supported by hand so that the first end 131 of each connecting rod is respectively received in the corresponding installation groove, and then the lock housing 2 can be installed into the installation sleeve 1. After the lock housing 2 is installed in the installation sleeve 1, it is fixed in the installation sleeve 1.

[0038] The anti-fall structure also needs to be able to be snap-fitted with the mounting sleeve 1, specifically, Figure 2 As shown, the corresponding two side walls (left and right side walls) of the installation sleeve 1 are provided with a slot 17 matched with each connecting rod first end 131. After the lock housing 2 is installed in the installation sleeve 1, the bottom plate 4 moves downward under gravity until it falls on the retaining ring 3. The downward movement of the bottom plate 4 drives the two connecting rods 13 to move. Here, the movement of the two connecting rods 13 is rotation. The result of the rotation of the two connecting rods 13 is that the two connecting rod first ends 131 gradually move away from each other. After the bottom plate 4 finally falls on the retaining ring 3, each connecting rod first end 131 is stuck in the corresponding slot 17. The clamping of the connecting rod first end 131 and the slot 17 realizes the fixation between the lock housing 2 and the installation sleeve 1, so that the lock housing 2 cannot fall.

[0039] In a specific implementation, two fixing brackets 5 are symmetrically arranged on the left and right sides of the bottom plate 4;

[0040] Finally, the setting of the two connecting rods 13 in this embodiment can, on the one hand, allow the lock housing 2 to be installed in the mounting sleeve 1, and on the other hand, can achieve the engagement of the first end 131 of the connecting rod with the slot 17 of the mounting sleeve 1 after the lock housing 2 is installed in the mounting sleeve 1. The engagement of the first end 131 of the connecting rod with the slot 17 achieves the fixation between the lock housing 2 and the mounting sleeve 1, thereby achieving the purpose of firmly fixing the lock housing 2 in the mounting sleeve 1.

[0041] In one embodiment, if Figure 4As shown, two sliding seats 7 are fixedly connected to the top inner wall of the lock housing 2, and each sliding seat 7 is provided with a sliding groove 8 extending upward from the lower end, and each fixed column 6 extends into the corresponding sliding groove 8. A return spring 9 is arranged in each sliding groove 8. When the bottom plate 4 falls on the retaining ring 3, the fixed column 6 is still located in the sliding groove 8, and the two return springs 9 are both in the original length state or in the compressed state.

[0042] As can be seen from the above, the base plate 4 can move up and down in the lock housing 2. Specifically, two sliding seats 7 are fixedly connected to the top inner wall of the lock housing 2, and each sliding seat 7 is provided with a sliding groove 8 extending upward from the lower end. The base plate 4 is able to move up and down in the lock housing 2 by extending each fixed column 6 thereon into the corresponding sliding groove 8; at the same time, when the base plate 4 falls on the retaining ring 3, the fixed column 6 is still located in the sliding groove 8.

[0043] Again, in this embodiment, a return spring 9 is provided in each sliding groove 8, and the return spring 9 is configured such that when the bottom plate 4 falls on the retaining ring 3, the two return springs 9 are both in the original length state or in the compressed state. Therefore, before the lock housing 2 is installed in the installation sleeve 1, when the bottom plate 4 is dragged by hand to make the lock housing 2 move downward under gravity, the two return springs 9 are both in the compressed state. When the lock housing 2 is installed in the installation sleeve 1 and the bottom plate 4 is not lifted, the bottom plate 4 falls on the retaining ring 3 under its own gravity and the elastic force of the return spring 9.

[0044] In one embodiment, if Figure 4 As shown, the upper end of each fixed column 6 extending into the corresponding sliding groove 8 is fixedly connected to a fixed block 23, and the lower end of each sliding seat 7 is fixedly connected to a limiting ring 24 that limits the fixed block 23 in the sliding groove 8. Each fixed block 23 can move up and down in the corresponding sliding groove 8. When the bottom plate 4 falls on the retaining ring 3, the fixed block 23 contacts the limiting ring 24.

[0045] In this embodiment, the upper end of the fixed column 6 is fixedly connected to a fixed block 23, and the lower end of the sliding seat 7 is fixedly connected to a limiting ring 24. The setting of the fixed block 23 and the limiting ring 24 is used to prevent the fixed column 6 from escaping from the sliding groove 8.

[0046] In one embodiment, if Figure 2 , Figure 3 As shown, the lower end of each fixed column 6 is fixedly connected to two connecting blocks 10, each hinge column 11 is located between the corresponding two connecting blocks 10, and each hinge column 11 is fixedly connected to the corresponding two connecting blocks 10; in the opposite side walls of the lock housing 2, each side wall is fixedly connected to a hinge seat 12, and the middle part of each connecting rod 13 is rotatably connected to the corresponding hinge seat 12; each connecting rod 13 is an L-shaped structure.

[0047] Specifically, the lower end of each fixed column 6 is fixedly connected to two connecting blocks 10, each hinge column 11 is fixed between the two connecting blocks 10, and the slide groove 14 of the second end 132 of each connecting rod is sleeved on the corresponding hinge column 11. In the opposite side walls of the lock housing 2, each side wall is fixedly connected to a hinge seat 12, and the middle part of each connecting rod 13 is rotatably connected to the corresponding hinge seat 12. Each connecting rod 13 of this embodiment is an L-shaped structure, and each connecting rod 13 can rotate with the hinge seat 12 as the center of the circle.

[0048] In one embodiment, if Figure 3 , Figure 4 As shown, each first end 131 of the connecting rod is fixedly connected with an anti-fall block 15, and each anti-fall block 15 cooperates with the slot 17 on the corresponding side of the mounting sleeve 1; the lock housing 2 moves downward under gravity to enable each anti-fall block 15 to be accommodated in the corresponding through groove 16; each anti-fall block 15 can be snapped into the corresponding slot 17; the slide groove 14 of each second end 132 of the connecting rod is an oblong hole.

[0049] In this embodiment, an anti-fall block 15 is also fixedly connected to the first end 131 of each connecting rod, and the anti-fall block 15 can cooperate with the slot 17 on the mounting sleeve 1 and keep the bottom plate 4 stationary. The lock housing 2 moves downward under gravity to enable each anti-fall block 15 to be accommodated in the corresponding through groove 16; after the lock housing 2 is fixed in the mounting sleeve 1 and the bottom plate 4 falls on the retaining ring 3, the anti-fall block 15 of each connecting rod first end 131 is stuck in the corresponding slot 17.

[0050] In this embodiment, the slide groove 14 of the second end 132 of the connecting rod is an oblong hole.

[0051] In one embodiment, if Figure 1 , Figure 5 As shown, a plurality of limit blocks 18 are fixedly connected to the upper end of the lock housing 2, and a number of limit slots 19 equal to the number of the limit blocks 18 are opened in the mounting sleeve 1, and matching slots 20 connected to the limit slots 19 are opened on the mounting sleeve 1 on both sides of each limit slot 19, and each matching slot 20 is provided with a clamping structure. After each limit block 18 is installed in the corresponding limit slot 19, the two clamping structures in each limit slot 19 are clamped and connected with the corresponding limit block 18.

[0052] The lock housing 2 of this embodiment is also fixed in the installation sleeve 1 through a second snap connection. Specifically, after the lock housing 2 is installed in the installation sleeve 1, the limit block 18 on the lock housing 2 extends into the corresponding limit groove 19. After the limit block 18 extends into the limit groove 19, the snap connection structure in the matching groove 20 on both sides of the limit groove 19 is snap-connected with the limit block 18. The snap connection between the limit block 18 and the snap connection structure achieves the purpose of fixing the lock housing 2 in the installation sleeve 1 again. The lock housing 2 is more firmly fixed in the installation sleeve 1 through the two fixed connections between the lock housing 2 and the installation sleeve 1, thereby reducing the fall of the lock housing 2. In specific implementation, the limit blocks 18 are linearly and evenly distributed on the top of the lock housing 2, and the limit grooves 19 correspond to the limit blocks 18 one by one.

[0053] In one embodiment, if Figure 5 As shown, each of the clamping structures includes a limit spring 21 and a buckle 22, one end of the limit spring 21 is fixedly connected to the mounting sleeve 1, and the other end of the limit spring 21 is fixedly connected to the buckle 22; each of the buckles 22 has an arc-shaped structure on one side close to the limit block 18, and each of the corresponding two sides of the limit block 18 is provided with a concave surface that cooperates with the arc structure; each of the limit springs 21 is configured to enable the arc structure of the buckle 22 to be clamped in the concave surface.

[0054] In this embodiment, the clamping structure specifically includes a limit spring 21 and a buckle 22. When the lock housing 2 is installed in the installation sleeve 1, the upper end of each limit clamping block 18 squeezes the arc structure of the corresponding two buckles 22, so that the limit spring 21 is gradually compressed. After the limit clamping block 18 is inserted into the corresponding limit groove 19, the limit spring 21 is reset to make the arc structure of the buckle 22 clamped in the concave surface. The arc structures of the two clamping blocks in each limit groove 19 are clamped in the concave surface of the limit clamping block 18, so as to achieve the purpose of fixing the lock housing 2 in the installation sleeve 1 again. In the specific implementation, each buckle 22 is a spherical structure.

[0055] Again, the embodiment of the utility model further provides a lock, which includes the lock structure described in any one of the above. Specifically, the lock of this embodiment includes a lock housing and a mounting sleeve, and the mounting sleeve and the lock housing are fixedly connected by an anti-falling block being clamped in a slot, and are fixedly connected by the arc structures of the two clamps in each limiting slot being clamped in the concave surface of the limiting clamp.

[0056] The lock of this embodiment may be a magnetic lock, or other lock installed on the top of the door body.

[0057] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0058] In addition, the terms "one", "two", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically limited.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A lock structure, characterized in that: The utility model comprises a lock shell and a mounting sleeve, wherein a first opening is provided at the lower end of the mounting sleeve for the lock shell to be installed into the mounting sleeve, an anti-falling structure is provided in the lock shell, and the anti-falling structure is configured to allow the lock shell to be installed into the mounting sleeve from the first opening, and after the lock shell is installed in the mounting sleeve, the anti-falling structure fixes the lock shell in the mounting sleeve by a snap-fit ​​connection with the mounting sleeve.

2. The lock structure according to claim 1, characterized in that: The anti-falling structure comprises two connecting rods, and each of the two opposite side walls of the lock housing is rotatably connected to the middle part of one of the connecting rods, and each of the side walls is provided with a through slot for the first end of the connecting rod rotatably connected thereto to pass through; the corresponding two sides of the mounting sleeve are provided with a clamping slot matched with the first end of each connecting rod; A bottom plate is arranged in the lock housing, and the bottom plate can move up and down in the lock housing, and a retaining ring is fixedly connected to the second opening at the lower end of the lock housing, and the retaining ring is used to limit the bottom plate in the lock housing; two fixing brackets are fixedly connected to the bottom plate, each of the fixing brackets is fixedly connected to the side wall of the fixing column, and the lower end of each fixing column is fixedly connected to a hinge column, and the second end of the connecting rod of each connecting rod is provided with a sliding groove, and each of the hinge columns is located in the corresponding sliding groove, and the axial direction of each hinge column is perpendicular to the rotation direction of the corresponding connecting rod; Keeping the base plate stationary, the lock shell moves downward under gravity to drive each of the connecting rods to move so that the first end of each connecting rod is respectively received in the corresponding through groove, and after the lock shell is fixed in the mounting sleeve and the base plate falls on the retaining ring, the first end of each connecting rod is stuck in the corresponding slot.

3. The lock structure according to claim 2, characterized in that: Two sliding seats are fixedly connected to the top inner wall of the lock shell, each of the sliding seats is provided with a sliding groove extending upward from the lower end, each of the fixed columns extends into the corresponding sliding groove, and each of the sliding grooves is provided with a return spring. When the bottom plate falls on the retaining ring, the fixed column is still located in the sliding groove, and the two return springs are in the original length state or in the compressed state.

4. The lock structure according to claim 3, characterized in that: The upper end of each fixed column extending into the corresponding sliding groove is fixedly connected to a fixed block, and the lower end of each sliding seat is fixedly connected to a limiting ring that limits the fixed block in the sliding groove. Each fixed block can move up and down in the corresponding sliding groove, and when the bottom plate falls on the retaining ring, the fixed block contacts the limiting ring.

5. The lock structure according to claim 2, characterized in that: The lower end of each fixed column is fixedly connected to two connecting blocks, each hinged column is located between the corresponding two connecting blocks, and each hinged column is fixedly connected to the corresponding two connecting blocks; in the opposite side walls of the lock shell, each side wall is fixedly connected to a hinge seat, and the middle part of each connecting rod is rotatably connected to the corresponding hinge seat; each connecting rod is an L-shaped structure.

6. The lock structure according to claim 2, characterized in that: The first end of each connecting rod is fixedly connected with an anti-falling block, and each anti-falling block cooperates with the slot on the corresponding side of the mounting sleeve; the lock housing moves downward under gravity so that each anti-falling block can be stored in the corresponding through groove; each anti-falling block can be snapped into the corresponding slot; the sliding groove at the second end of each connecting rod is an oblong hole.

7. The lock structure according to claim 1, characterized in that: A plurality of limit blocks are fixedly connected to the upper end of the lock housing, and the mounting sleeve is provided with limit slots equal to the number of the limit blocks. The mounting sleeves on both sides of each limit slot are provided with matching slots connected to the limit slots, and each matching slot is provided with a clamping structure. After each limit block is installed in the corresponding limit slot, the two clamping structures in each limit slot are clamped and connected with the corresponding limit block.

8. The lock structure according to claim 7, characterized in that: Each of the clamping structures includes a limit spring and a buckle, one end of the limit spring is fixedly connected to the mounting sleeve, and the other end of the limit spring is fixedly connected to the buckle; one side of each buckle close to the limit block is an arc-shaped structure, and the corresponding two sides of each limit block are provided with a concave surface that cooperates with the arc structure; each of the limit springs is configured to enable the arc structure of the buckle to be clamped in the concave surface.

9. The lock structure according to claim 8, characterized in that: Each of the buckles is a spherical structure.

10. A lock, characterized in that: The invention comprises the lock structure as described in any one of claims 1 to 9.

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