Locking device and equipment

Abstract

The utility model relates to the technical field of anti-theft nuts, and provides a locking device and equipment, the locking device comprises a shell structure, a nut and a transmission structure, and the shell structure is provided with a hollow channel for fixedly placing the nut; a containing cavity is formed in the shell structure, the transmission structure comprises a ratchet wheel, a locking assembly, a first limiting assembly and a second limiting assembly which are arranged in the containing cavity, the ratchet wheel is arranged on the circumferential outer surface of the nut, and the locking assembly is located between the first limiting assembly and the second limiting assembly; the nut is rotationally matched with the shell structure, and the locking assembly drives the first limiting assembly or the second limiting assembly to elastically abut against the ratchet wheel. The anti-theft locking device solves the technical problem that an existing locking device does not have an anti-theft function or is poor in anti-theft effect.

Description

[Technical Field]

[0001] This utility model relates to the field of anti-theft nuts and nuts, and in particular to a locking device and equipment. [Background Technology]

[0002] In fields such as machinery manufacturing and infrastructure construction, the safety of fasteners is paramount. However, due to loose connections in mechanical parts or human-caused damage, significant losses to public facilities and threats to personal safety occur annually. To address this challenge, anti-theft nuts have emerged. Their design principles typically involve special shapes, special threads, or structures requiring special tools for disassembly, thereby increasing the complexity of disassembly and preventing easy unscrewing with ordinary tools.

[0003] While existing anti-theft nuts offer good fastening, they are significantly inadequate in preventing theft. Criminals can easily remove the nuts with simple operations, thereby stealing or damaging related equipment and causing property loss. [Utility Model Content]

[0004] To address the technical problem that existing locking devices lack anti-theft functionality or have poor anti-theft effects, this utility model provides a locking device and equipment.

[0005] The technical solution of this utility model to solve the technical problem is to provide a locking device, which includes a housing structure, a nut, and a transmission structure. The housing structure has a hollow channel for fixing the nut; the interior of the housing structure has a receiving cavity; the transmission structure includes a ratchet, a locking component, a first limiting component, and a second limiting component disposed in the receiving cavity; the ratchet is disposed on the circumferential outer surface of the nut; the locking component is located between the first limiting component and the second limiting component; the nut is rotatably engaged with the housing structure; and the locking component drives the nut... The first or second limiting component elastically abuts against the ratchet; when the first limiting component abuts against the ratchet, the housing structure can only drive the nut to rotate in the first direction, and when the housing structure rotates in the second direction, the housing structure rotates freely relative to the nut; when the second limiting component abuts against the ratchet, the housing structure can only drive the nut to rotate in the second direction, and when the housing structure rotates in the first direction, the housing structure rotates freely relative to the nut; one of the first direction and the second direction is clockwise, and the other is counterclockwise.

[0006] Preferably, the first limiting component includes a first limiting member and a first elastic member, and the second limiting component includes a second limiting member and a second elastic member; the first limiting member is rotatable relative to the housing structure, one end of the first elastic member abuts against the inner sidewall of the housing structure, and the other end contacts the first limiting member; the second limiting member is rotatable relative to the housing structure, one end of the second elastic member abuts against the inner sidewall of the housing structure, and the other end contacts the second limiting member; the locking component is rotatable relative to the housing structure to abut against the first limiting member or the second limiting member, and respectively engages the second limiting member or the first limiting member with the ratchet.

[0007] Preferably, the first limiting member includes a first rotating shaft and a first abutting member connected together, the first abutting member being rotatable relative to the first rotating shaft, and the side of the first abutting member away from the locking assembly contacting the first elastic member; the second limiting member includes a second rotating shaft and a second abutting member connected together, the second abutting member being rotatable relative to the second rotating shaft, and the side of the second abutting member away from the locking assembly contacting the second elastic member.

[0008] Preferably, the first abutting member is provided with a first abutting surface and a second abutting surface, the first abutting surface being located on the side of the first abutting member away from the first rotating shaft, and the second abutting surface being located on the side of the first abutting member away from the first elastic member; the second abutting member is provided with a third abutting surface and a fourth abutting surface, the third abutting surface being located on the side of the second abutting member away from the second rotating shaft, and the fourth abutting surface being located on the side of the second abutting member away from the second elastic member.

[0009] Preferably, the locking assembly is rotatable relative to the housing structure to abut against the first abutment or the second abutment, and respectively engages the second abutment or the first abutment with the ratchet; when the first abutment is engaged with the ratchet, the ratchet contacts the first abutment surface and the second abutment surface respectively; when the second abutment is engaged with the ratchet, the ratchet contacts the third abutment surface and the fourth abutment surface respectively.

[0010] Preferably, the locking assembly includes a first rotating member and a second rotating member connected together. The first rotating member can drive the second rotating member to rotate relative to the housing structure, so that the second rotating member abuts against the first abutment or the second abutment. The housing structure is provided with a through groove, and the side of the first rotating member is provided with a boss. The first rotating member and the boss are exposed after passing through the through groove. The boss can slide in the through groove to abut against the inner sidewall of the through groove.

[0011] Preferably, the first rotating member has a locking groove at the exposed end after passing through the groove, and the inner surface of the locking groove cooperates with the external locking device.

[0012] Preferably, the housing structure includes a coverable housing and a bottom plate. The inner wall of the housing is provided with a first groove and a second groove. The bottom plate is provided with a first through hole corresponding to the position of the first groove and a second through hole corresponding to the position of the second groove. The top of the first rotating shaft abuts against the first groove, and the bottom passes through the first through hole. The top of the second rotating shaft abuts against the second groove, and the bottom passes through the second through hole.

[0013] Preferably, the circumferential outer surface of the nut abuts against the inner wall of the housing in the hollow channel, and the top surface of the ratchet abuts against the inner wall surface of the housing on the side away from the base plate, so as to close the receiving cavity.

[0014] Another technical solution to the technical problem solved by this utility model is to provide a device with anti-theft function, the device including the above-mentioned locking device.

[0015] Compared with the prior art, the locking device and equipment provided by this utility model have the following advantages:

[0016] 1. An embodiment of this utility model provides a locking device. By setting a ratchet structure on the circumferential outer surface of the nut, the rotation of the nut can be restricted by a transmission structure after the nut is tightened. The transmission structure can only drive the ratchet to rotate in a specific direction, so that the nut can only rotate in a specific direction. With this design, it can prevent outsiders from easily unscrewing the nut and then stealing or damaging related equipment, thus avoiding property loss.

[0017] 2. In the locking device provided in this utility model embodiment, the ratchet is driven by the first or second limiting member when the housing structure is rotated through the meshing state between the ratchet and the first or second limiting member, so that the nut rotates in a clockwise or counterclockwise direction, thereby locking or unlocking the nut. The ratchet structure ensures that the nut has a good anti-theft function.

[0018] 3. In the locking device provided in this utility model embodiment, the engagement between the abutment and the ratchet is achieved through the cooperation between the abutment, the elastic element and the rotating shaft. One end of the rotating shaft on the limiting member serves as a rotating section, driving the abutment to rotate relative to the rotating shaft. One end of the abutment serves as a working section. The elastic element is located on the side away from the locking assembly, which can ensure that the ratchet can only rotate in a specific direction in different locking modes. This ensures that after the nut is locked by rotating in one direction, it cannot be disassembled by rotating in another direction, thus improving the user experience of the locking device.

[0019] 4. In the locking device provided in this utility model embodiment, when the housing structure rotates in a specific direction, since the rotating shaft is fixedly set inside the housing structure, the abutting surface of the abutting member away from the rotating shaft can abut against the ratchet, thereby driving the nut to rotate; since the elastic member is movable and deformable, the abutting surface of the abutting member away from the elastic member cannot drive the nut to rotate, which will cause the housing structure to rotate relative to the nut.

[0020] 5. In the locking device provided in this utility model embodiment, the locking component can be rotated to control the engagement of the abutment and the ratchet. At this time, the ratchet is in contact with the abutment surface on the abutment. When the nut can rotate in a specific direction, the rotating shaft pushes the abutment surface on the abutment away from the rotating shaft to contact the ratchet, thereby driving the ratchet to rotate. The two abutment components can realize that the nut can rotate in opposite directions respectively.

[0021] 6. In the locking device provided in this embodiment of the present invention, when the locking assembly rotates, the first rotating member drives the second rotating member to rotate. The second rotating member abuts against one of the abutting members, causing the abutting member on the other side to engage with the ratchet. By providing a boss on the side of the first rotating member and providing a through groove on the housing structure to expose the boss, the boss slides in the through groove to abut against the inner side wall of the through groove, thereby achieving a limiting fit between the locking assembly and the housing structure. In addition, the first rotating member and the boss are exposed after passing through the through groove, allowing the user to know the current locking mode of the locking device.

[0022] 7. In the locking device provided in this utility model embodiment, the inner surface of the locking groove needs to cooperate with a specific external locking device. The first rotating part is driven by the external locking device to change the locking mode of the nut. Through this design, it is possible to prevent outsiders from driving the supporting part to rotate with tools they can easily collect, thereby achieving a good anti-theft effect.

[0023] 8. In the locking device provided in this utility model embodiment, the groove provided on the inner wall of the housing and the through hole provided on the bottom plate can ensure the limiting of the rotating shaft when the housing structure rotates, thereby ensuring that the supporting member only rotates relative to the rotating shaft. Through this design, on the one hand, it can protect the limiting component and extend the service life of the locking device, and on the other hand, it can improve the stability of the limiting component.

[0024] 9. In the locking device provided in this utility model embodiment, by restricting the movement of the ratchet and nut in their horizontal and vertical directions, the overall structural stability of the ratchet and nut can be guaranteed, ensuring the stability of the ratchet and nut fixedly connected to the housing structure, so that the limiting member can smoothly engage with the ratchet, and drive the ratchet and nut to rotate together when the housing rotates in a specific direction.

[0025] 10. This utility model embodiment also provides a device with anti-theft function, the device including the above-mentioned locking device.

[0026] It should be noted that the device of this utility model embodiment has the same beneficial effects as the locking device described above, and will not be repeated here. [Attached Image Description]

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the locking device according to an embodiment of the present invention.

[0029] Figure 2 This is an exploded view of the overall structure of the locking device according to an embodiment of the present invention.

[0030] Figure 3 This is the utility model Figure 2 A magnified view of part A in the middle.

[0031] Figure 4 This is a schematic diagram of the structure of the first limiting member and the second limiting member in the locking device of this utility model embodiment.

[0032] Figure 5 This is a schematic diagram of the overall structure of the housing in the locking device of this utility model embodiment.

[0033] Figure 6 This is a schematic diagram of the overall structure of the locking component in the locking device of this utility model embodiment.

[0034] Figure 7 This is a schematic diagram of the overall framework of the device according to an embodiment of this utility model.

[0035] Explanation of reference numerals in the attached diagram:

[0036] 10. Locking device; 20. Equipment;

[0037] 1. Shell structure; 11. Hollow channel; 12. Through groove; 13. Shell; 131. First groove; 132. Second groove; 14. Base plate; 141. First through hole; 142. Second through hole;

[0038] 2. Nuts;

[0039] 3. Transmission structure; 31. Ratchet; 32. Locking assembly; 321. First rotating member; 3211. Locking groove; 322. Second rotating member; 323. Boss; 33. First limiting assembly; 331. First limiting member; 3311. First rotating shaft; 3312. First abutting member; 3313. First abutting surface; 3314. Second abutting surface; 332. First elastic member; 34. Second limiting assembly; 341. Second limiting member; 3411. Second rotating shaft; 3412. Second abutting member; 3413. Third abutting surface; 3414. Fourth abutting surface; 342. Second elastic member.

Detailed Implementation Methods

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0041] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0042] It should be noted that the terms "first" and "second" in the specification and claims of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0043] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0046] Please see Figure 1 and Figure 2 This utility model provides a locking device 10, which includes a housing structure 1, a nut 2, and a transmission structure 3. The housing structure 1 has a hollow channel 11 for fixing the nut 2. The housing structure 1 has a receiving cavity inside. The transmission structure 3 includes a ratchet 31, a locking component 32, a first limiting component 33, and a second limiting component 34 disposed in the receiving cavity. The ratchet 31 is disposed on the circumferential outer surface of the nut 2. The locking component 32 is located between the first limiting component 33 and the second limiting component 34. The nut 2 is rotatably engaged with the housing structure 1, and the locking component 32 drives the first limiting component 33 or the second limiting component 34 to elastically resist the ratchet 31.

[0047] The locking device 10 provided by this utility model has a ratchet structure set on the circumferential outer surface of the nut 2, and the ratchet 31 is integrally formed with the nut 2. After the nut 2 is tightened, the rotation of the nut 2 can be restricted by the transmission structure 3. The transmission structure 3 can only drive the ratchet 31 to rotate in a specific direction, so that the nut 2 can only rotate in a specific direction. Through this design, the technical problem that the existing locking devices do not have anti-theft function or have poor anti-theft effect is solved, and the nut 2 is prevented from being easily unscrewed by outsiders, thereby stealing or damaging related equipment and causing property loss.

[0048] Specifically, the locking device 10 is based on the nut 2. Utilizing the feature of the nut 2 having an internal thread on its circumferential inner surface, the transmission structure 3 enables a detachable connection between the nut 2 and the external thread of the external structure. The detachable connection is a threaded connection. The nut 2 can be fixedly placed on the housing structure 1. The receiving cavity inside the housing structure 1 houses the ratchet 31, locking assembly 32, first limiting assembly 33, and second limiting assembly 34 of the transmission structure 3. By setting the housing structure 1, the various components of the transmission structure 3 can be protected.

[0049] In particular, the adjustment end of the locking component 32 is located inside the outer surface of the housing structure 1 and cannot be adjusted by ordinary unlocking tools (such as wrenches, screwdrivers, etc.). It requires a specific polygonal wrench to adjust it. This design can prevent others from arbitrarily adjusting the locking component 32 and improve the anti-theft performance of the locking device 10.

[0050] Understandably, the internal thread of the nut 2 is located in the hollow channel 11, and both ends of the nut 2 are fixed by the housing structure 1. The ratchet 31 is located on the circumferential outer surface of the nut 2. The locking assembly 32 drives the first limiting assembly 33 or the second limiting assembly 34 to elastically abut against the ratchet 31. Since the first limiting assembly 33 and the second limiting assembly 34 are located on both sides of the locking assembly 32, when the locking assembly 32 drives the first limiting assembly 33 to elastically abut against the ratchet 31, the locking assembly 32 abuts against the second limiting assembly 34; when the locking assembly 32 drives the second limiting assembly 34 to elastically abut against the ratchet 31, the locking assembly 32 abuts against the first limiting assembly 33.

[0051] It should be noted that the nut 2 is rotatably engaged with the housing structure 1. When the first limiting component 33 or the second limiting component 34 elastically abuts against the ratchet 31, a clockwise or counterclockwise force is applied to rotate the housing structure 1 in order to drive the nut 2 to rotate. It can be understood that since the ratchet 31 is abutted by applying an elastic force through the first limiting component 33 or the second limiting component 34, when the rotation direction of the housing structure 1 corresponds to the direction of the applied elastic force, the first limiting component or the second limiting component will compress the elastic structure, making it impossible for the first limiting component 33 or the second limiting component 34 to drive the ratchet 31 to rotate, and thus the nut 2 cannot be rotated.

[0052] Furthermore, when the first limiting component 33 abuts against the ratchet 31, the housing structure 1 can only drive the nut 2 to rotate in the first direction. When the housing structure 1 rotates in the second direction, the housing structure 1 rotates freely relative to the nut 2. When the second limiting component 34 abuts against the ratchet 31, the housing structure 1 can only drive the nut 2 to rotate in the second direction. When the housing structure 1 rotates in the first direction, the housing structure 1 rotates freely relative to the nut 2. The first direction and the second direction are clockwise and counterclockwise, respectively.

[0053] In this embodiment of the invention, the first direction is clockwise and the second direction is counterclockwise. When the first limiting component 33 abuts against the ratchet 31, the housing structure 1 can only drive the nut 2 to rotate in the clockwise direction. When the housing structure 1 rotates in the counterclockwise direction, the housing structure 1 will spin freely relative to the nut 2. Conversely, when the first limiting component 33 abuts against the ratchet 31, when the second limiting component 34 abuts against the ratchet 31, the housing structure 1 can only drive the nut 2 to rotate in the counterclockwise direction. When the housing structure 1 rotates in the clockwise direction, the housing structure 1 will spin freely relative to the nut 2.

[0054] In some embodiments, the first limiting component 33 includes a first limiting member 331 and a first elastic member 332, and the second limiting component 34 includes a second limiting member 341 and a second elastic member 342; the first limiting member 331 is rotatable relative to the housing structure 1, one end of the first elastic member 332 abuts against the inner sidewall of the housing structure 1, and the other end contacts the first limiting member 331; the second limiting member 341 is rotatable relative to the housing structure 1, one end of the second elastic member 342 abuts against the inner sidewall of the housing structure 1, and the other end contacts the second limiting member 341.

[0055] In embodiments of this utility model, the locking assembly 32 can rotate relative to the housing structure 1 to abut against the first limiting member 331 or the second limiting member 341, and respectively make the second limiting member 341 or the first limiting member 331 engage with the ratchet 31.

[0056] The locking device 10 provided by this utility model uses the meshing state between the ratchet 31 and the first limiting member 331 or the second limiting member 341. When the housing structure 1 is rotated, the ratchet 31 is driven by the first limiting member 331 or the second limiting member 341, so that the nut 2 rotates in a clockwise or counterclockwise direction, thereby realizing the locking or unlocking of the nut 2. The ratchet structure ensures that the nut 2 has a good anti-theft function.

[0057] Understandably, when the first limiting member 331 engages with the ratchet 31, the locking assembly 32 is rotated to abut against the second limiting member 341. At this time, the housing structure 1 can only drive the nut 2 to rotate in a clockwise direction. When the housing structure 1 rotates in a counterclockwise direction, the housing structure 1 rotates freely relative to the nut 2. The opposite is true when the second limiting member 341 engages with the ratchet 31. Through this design, when the housing structure 1 can drive the nut 2 in a clockwise direction, the internal thread of the nut 2 rotates relative to the external thread of the external structure to achieve the locking of the nut 2. When the housing structure 1 drives the nut 2 in a counterclockwise direction, the nut 2 is separated and disassembled from the external structure.

[0058] It should be noted that the locking assembly 32 drives the first limiting member 331 or the second limiting member 341 to elastically resist the ratchet 31, which is achieved by the elastic deformation of the first elastic member 332 or the second elastic member 342. When the locking assembly 32 rotates and abuts against the first limiting member 331, the first limiting member 331 applies a pressing force to the first elastic member 332. At this time, one end of the second limiting member 341 is not abutted by the locking assembly 32, and the second elastic member 342 recovers its elastic deformation to elastically abut against the second limiting member 341, so that the second limiting member 341 engages with the ratchet 31. When the locking assembly 32 rotates and abuts against the second limiting member 341, the second limiting member 341 applies a pressing force to the second elastic member 342. At this time, one end of the first limiting member 331 is not abutted by the locking assembly 32, and the first elastic member 332 recovers its elastic deformation to elastically abut against the first limiting member 331, so that the first limiting member 331 engages with the ratchet 31.

[0059] Please see Figure 2 and Figure 3 The first limiting member 331 includes a first rotating shaft 3311 and a first supporting member 3312 connected to each other. The first supporting member 3312 can rotate relative to the first rotating shaft 3311. The side of the first supporting member 3312 away from the locking assembly 32 contacts the first elastic member 332.

[0060] In the locking device 10 provided in this embodiment of the present invention, the engagement between the abutment and the ratchet 31 is achieved through the cooperation between the abutment, the elastic member and the rotating shaft. The first rotating shaft 3311 is rotatable. During the process of rotating the locking assembly 32 to abut the first limiting member 331, the first abutment 3312 rotates with the first rotating shaft 3311 as the rotating axis.

[0061] Similarly, the second limiting member 341 includes a connected second rotating shaft 3411 and a second supporting member 3412. The second supporting member 3412 can rotate relative to the second rotating shaft 3411. The side of the second supporting member 3412 away from the locking assembly 32 contacts the second elastic member 342. The second rotating shaft 3411 itself can rotate. During the process of rotating the locking assembly 32 to support the second limiting member 341, the second supporting member 3412 rotates around the second rotating shaft 3411 as the axis of rotation.

[0062] In some embodiments, the end of the first limiting member 331 near the first rotating shaft 3311 serves as a rotating segment, which can drive the first supporting member 3312 to rotate relative to the first rotating shaft 3311, while the end near the first supporting member 3312 serves as a working segment, and the first elastic member 332 is located on the side away from the locking assembly 32; the end of the second limiting member 341 near the second rotating shaft 3411 serves as a rotating segment, which can drive the second supporting member 3412 to rotate relative to the second rotating shaft 3411, while the end near the second supporting member 3412 serves as a working segment, and the second elastic member 342 is located on the side away from the locking assembly 32.

[0063] It should be noted that by setting a relatively rotatable shaft and abutment, as well as the cooperation relationship between the shaft, abutment and elastic element, it can be ensured that the ratchet 31 can only rotate in a specific direction in different locking modes, that is, drive the nut 2 to rotate to achieve one of the actions of locking or unlocking. This ensures that after the nut 2 is locked by rotating in one direction, it cannot be easily unlocked by rotating in another direction, thus improving the user experience of the locking device 10.

[0064] Please see Figure 2 and Figure 4 The first abutment member 3312 is provided with a first abutment surface 3313 and a second abutment surface 3314. The first abutment surface 3313 is located on the side of the first abutment member 3312 away from the first rotating shaft 3311, and the second abutment surface 3314 is located on the side of the first abutment member 3312 away from the first elastic member 332. The second abutment member 3412 is provided with a third abutment surface 3413 and a fourth abutment surface 3414. The third abutment surface 3413 is located on the side of the second abutment member 3412 away from the second rotating shaft 3411, and the fourth abutment surface 3414 is located on the side of the second abutment member 3412 away from the second elastic member 342.

[0065] In the locking device 10 provided in this embodiment of the present invention, when the housing structure 1 rotates in a specific direction, since the rotating shaft is fixedly installed inside the housing structure 1, the abutting surface of the abutting member away from the rotating shaft can abut against the ratchet 31, thereby driving the nut 2 to rotate.

[0066] Understandably, the side of the first abutting member 3312 away from the first rotating shaft 3311 is the first abutting surface 3313, and the side of the first abutting member 3312 away from the first elastic member 332 is the second abutting surface 3314. When the locking assembly 32 drives the first abutting member 3312 to elastically abut against the ratchet 31, the housing structure 1 is rotated clockwise. The first rotating shaft 3311 can drive the first abutting member 3312 to rotate the ratchet 31, thereby driving the nut 2 to rotate and locking the nut 2.

[0067] The side of the second abutment 3412 away from the second rotating shaft 3411 is the third abutment surface 3413, and the side of the second abutment 3412 away from the second elastic member 342 is the fourth abutment surface 3414. When the locking assembly 32 drives the second abutment 3412 to elastically abut against the ratchet 31, the housing structure 1 is rotated counterclockwise. The second rotating shaft 3411 can drive the second abutment 3412 to rotate the ratchet 31, thereby driving the nut 2 to rotate and realize the disassembly of the nut 2.

[0068] It should be noted that since the first elastic element 332 and the second elastic element 342 are movable and deformable, the second abutment surface 3314 on the first abutment 3312 that is opposite to the first elastic element 332 and the fourth abutment surface 3414 on the second abutment 3412 that is opposite to the second elastic element 342 cannot drive the nut 2 to rotate. That is to say, when the first abutment 3312 abuts against the ratchet 31, rotating the housing structure 1 counterclockwise will cause the housing structure 1 to rotate freely relative to the nut 2; when the second abutment 3412 abuts against the ratchet 31, rotating the housing structure 1 clockwise will cause the housing structure 1 to rotate freely relative to the nut 2. Thus, it can be seen that the ratchet structure can realize the switching between the two working modes of the nut 2: disassembly mode and anti-theft mode.

[0069] Please continue reading. Figure 2 and Figure 3 The locking assembly 32 can rotate relative to the housing structure 1 to abut against the first abutment 3312 or the second abutment 3412, and respectively engage the second abutment 3412 or the first abutment 3312 with the ratchet 31.

[0070] In the locking device 10 provided in this embodiment of the present invention, the locking component 32 can be rotated to control the engagement of the abutment and the ratchet 31. At this time, the ratchet 31 is in contact with the abutment surface on the abutment. When the nut 2 can rotate in a specific direction, the rotating shaft pushes the abutment surface on the abutment away from the rotating shaft to contact the ratchet 31, thereby driving the ratchet 31 to rotate. The two abutment components can realize that the nut 2 can rotate in opposite directions respectively.

[0071] Furthermore, when the first abutment 3312 engages with the ratchet 31, the ratchet 31 contacts the first abutment surface 3313 and the second abutment surface 3314 respectively; when the second abutment 3412 engages with the ratchet 31, the ratchet 31 contacts the third abutment surface 3413 and the fourth abutment surface 3414 respectively.

[0072] Understandably, the first abutment surface 3313 and the second abutment surface 3314 on the first abutment member 3312 are adjacent to each other, and the third abutment surface 3413 and the fourth abutment surface 3414 on the second abutment member 3412 are adjacent to each other.

[0073] When the first abutment 3312 engages with the ratchet 31, rotating the housing structure 1 clockwise can cause the first abutment surface 3313 of the first abutment 3312 to drive the ratchet 31 to rotate. When rotating the housing structure 1 counterclockwise, the first elastic element 332 will cause the first abutment 3312 to reciprocate in a circumferential direction relative to the ratchet 31, that is, it cannot drive the ratchet 31 to rotate. At this time, the housing structure 1 will spin freely relative to the ratchet 31. When the second abutment 3412 engages with the ratchet 31, rotating the housing structure 1 counterclockwise can cause the third abutment surface 3413 of the second abutment 3412 to drive the ratchet 31 to rotate. When rotating the housing structure 1 clockwise, the second elastic element 342 will cause the second abutment 3412 to reciprocate in a circumferential direction relative to the ratchet 31, that is, it cannot drive the ratchet 31 to rotate. At this time, the housing structure 1 will spin freely relative to the ratchet 31.

[0074] Please see Figure 2 , Figure 3 and Figure 6 The locking assembly 32 includes a first rotating member 321 and a second rotating member 322 connected together. The first rotating member 321 can drive the second rotating member 322 to rotate relative to the housing structure 1, so that the second rotating member 322 abuts against the first abutting member 3312 or the second abutting member 3412.

[0075] The shell structure 1 is provided with a through groove 12, and the side of the first rotating member 321 is provided with a boss 323. The first rotating member 321 and the boss 323 are exposed after passing through the through groove 12. The boss 323 can slide in the through groove 12 to abut against the inner side wall of the through groove 12.

[0076] In the locking device 10 provided in this embodiment of the present invention, when the locking component 32 rotates, the first rotating component 321 drives the second rotating component 322 to rotate. The second rotating component 322 and the first rotating component 321 are linked together. The second rotating component 322 abuts against the abutting component on one side, so that the abutting component on the other side engages with the ratchet 31.

[0077] Specifically, the rotation angle of the first rotating member 321 can be adjusted by the portion of the first rotating member 321 exposed in the through groove 12, so as to drive the second rotating member 322 to elastically abut against the first abutment member 3312 or the second abutment member 3412. When the first rotating member 321 and the first elastic member 332 abut against the first abutment member 3312, the second abutment member 3412 engages with the ratchet 31; when the second rotating member 322 and the second elastic member 342 elastically abut against the first abutment member 3312, the first abutment member 3312 engages with the ratchet 31.

[0078] Understandably, by providing a boss 323 on the side of the first rotating member 321 and providing a through groove 12 on the housing structure 1 to expose the boss 323, the boss 323 slides within the through groove 12 to abut against the inner sidewall of the through groove 12, thereby achieving a limiting fit between the locking assembly 32 and the housing structure 1. Furthermore, by opening the through groove 12 to expose the first rotating member 321 and the boss 323 after they pass through, the user can be informed of the current locking mode of the locking device 10, improving the user experience of the locking device 10.

[0079] Furthermore, the first rotating member 321 has a locking groove 3211 at the exposed end after passing through the groove 12, and the inner surface of the locking groove 3211 cooperates with the external locking device.

[0080] In the locking device 10 provided in this embodiment of the utility model, the inner surface of the locking groove 3211 needs to cooperate with a specific external locking device. The first rotating member 321 is driven by the external locking device to change the working mode of the nut 2. Through this design, it is possible to prevent outsiders from driving the supporting member to rotate with tools they have collected nearby, thereby achieving a good anti-theft effect.

[0081] Understandably, the locking groove 3211 provided at the end of the first rotating member 321 is a polygonal groove, which requires a specific tool that is adapted to the shape of the locking groove 3211 to cooperate with the locking groove 3211 to control the rotation of the first rotating member 321 and thus switch the working mode of the locking device 10.

[0082] As an optional implementation, the locking groove 3211 is a hexagonal groove, and the external locking device is an internal hex wrench. The internal hex wrench is inserted into the inner surface of the locking groove 3211 to rotate the first rotating member 321. That is to say, the locking device 10 in this embodiment of the present invention requires an internal hex wrench of the corresponding size to operate the first rotating member 321, so that the first rotating member 321 rotates by a corresponding angle, so that the locking device 10 is in disassembly mode or anti-theft mode.

[0083] It is understood that the type and size of the locking groove 3211 and the external locking device can be adjusted according to actual needs. The above description is only one embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions and improvements made within the principles of this utility model should be included within the protection scope of this utility model.

[0084] The above design prevents outsiders from switching the locking device 10 between disassembly and anti-theft modes by rotating the first rotating component 321 without using lock-picking tools or by using only readily available tools, thus ensuring a good anti-theft effect.

[0085] Please see Figure 3 and Figure 5 The shell structure 1 includes a coverable shell 13 and a bottom plate 14. The inner wall surface of the shell 13 is provided with a first groove 131 and a second groove 132. The bottom plate 14 is provided with a first through hole 141 corresponding to the position of the first groove 131 and a second through hole 142 corresponding to the position of the second groove 132.

[0086] The top of the first rotating shaft 3311 abuts against the first groove 131, and the bottom passes through the first through hole 141; the top of the second rotating shaft 3411 abuts against the second groove 132, and the bottom passes through the second through hole 142.

[0087] In the locking device 10 provided in this embodiment of the utility model, the groove provided on the inner wall of the housing 13 and the through hole provided on the bottom plate 14 can ensure the limiting of the first rotating shaft 3311 and the second rotating shaft 3411 when the housing structure 1 rotates. This ensures that the first abutment 3312 rotates only relative to the first rotating shaft 3311 and the second abutment 3412 rotates only relative to the second rotating shaft 3411, without shifting in other directions. This design can protect the limiting components and extend the service life of the locking device 10.

[0088] Understandably, the first abutment 3312 is located on the circumferential outer surface of the first rotating shaft 3311. The top of the first rotating shaft 3311 is fixed by the first groove 131, and the bottom is fixed after passing through the first through hole 141. This allows the first rotating shaft 3311 to rotate only on its own, thereby driving the first abutment 3312 to rotate, without any offset in the horizontal or vertical direction of the housing structure 1. The second abutment 3412 is located on the circumferential outer surface of the second rotating shaft 3411. The top of the second rotating shaft 3411 is fixed by the second groove 132, and the bottom is fixed after passing through the first through hole 141. This allows the second rotating shaft 3411 to rotate only on its own, thereby driving the second abutment 3412 to rotate, without any offset in the horizontal or vertical direction of the housing structure 1. This improves the stability of the limiting assembly during use.

[0089] Please see Figure 2 and Figure 5 The outer circumferential surface of the nut 2 abuts against the inner wall of the housing 13 on the hollow channel 11, and the top surface of the ratchet 31 abuts against the inner wall surface of the housing 13 on the side away from the bottom plate 14, so as to close the receiving cavity.

[0090] In the locking device 10 provided in this embodiment of the present invention, by restricting the movement of ratchet 31 and nut 2 in their vertical and horizontal directions, the overall structural stability of ratchet 31 and nut 2 can be ensured, and the stability of ratchet 31 and nut 2 fixedly connected to housing structure 1 can be ensured, so that the limiting member can smoothly engage with ratchet 31, and drive ratchet 31 and nut 2 to rotate together when housing 13 rotates in a specific direction.

[0091] Understandably, the ratchet structure is set inside the receiving cavity, and the closure of the receiving cavity is achieved by the ratchet 31 abutting against the inner wall of the housing 13, the nut 2 being fixedly placed on the base plate 14, and the nut 2 abutting against the inner side wall of the housing 13.

[0092] Specifically, when the housing 13 is closed onto the base plate 14, the nut 2 is fixedly placed on the base plate 14. The inner wall of the housing 13 and the inner bottom wall of the base plate 14 abut against the upper and lower ends of the ratchet 31, which can prevent the nut 2 from moving in the vertical direction. The outer circumferential surface of the nut 2 can abut against the inner side wall of the housing 13. Since the ratchet 31 is located on the outer circumferential surface of the nut 2, that is, the nut 2 is located on the inner ring of the ratchet 31, the abutment against the inner side wall of the housing 13 can prevent the nut 2 from moving in the horizontal direction, ensuring that the locking device 10 can be used normally and has an anti-theft effect.

[0093] Please see Figure 7 This utility model embodiment also provides a device 20 with anti-theft function, the device 20 including the locking device 10 described above.

[0094] Understandably, the device 20 of this utility model embodiment has the same beneficial effects as the locking device 10 of the above embodiment; wherein, the locking device 10 is equivalent to a nut with good anti-theft effect, i.e., an anti-theft nut.

[0095] It should be noted that anti-theft nuts have been widely used in many fields, such as infrastructure fields like national power transmission towers and signal towers, as well as industrial manufacturing fields like engineering machinery, construction equipment, and auto parts. With continuous technological breakthroughs in this field, anti-theft nuts will be applied to a series of fields with extremely high requirements for fastener safety, such as aerospace, heavy machinery, and high-speed railways.

[0096] Specifically, in this utility model, the device 20 can be power equipment such as power towers and transformers. Theft or damage to the fasteners of power equipment may lead to serious safety accidents. The device 20 can also be public facilities such as streetlights and traffic signs. Fasteners on public facilities are also easy to be stolen. By using the locking device 10, the service life of public facilities can be extended, thereby reducing maintenance costs.

[0097] The device 20 can also be a vehicle such as a car or motorcycle. By using the locking device 10, the engine, wheel hubs, license plates, and other parts of the vehicle can be fixed to prevent theft or illegal modification. The device 20 can also be a display case or collection cabinet for valuables to protect valuables such as artwork, jewelry, and gold from theft and property loss.

[0098] In addition, equipment 20 can also be some key equipment in industrial and agricultural production, such as industrial equipment such as engines and transmission devices, as well as agricultural equipment such as tractors and harvesters, to prevent outsiders from illegally dismantling and stealing them, so as to ensure the normal operation and safety of industrial and agricultural equipment.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking device, characterized in that, The locking device includes a housing structure, a nut, and a transmission structure. The housing structure is provided with a hollow channel for fixing and placing the nut. The housing structure has an internal cavity. The transmission structure includes a ratchet, a locking assembly, a first limiting assembly, and a second limiting assembly disposed in the cavity. The ratchet is disposed on the circumferential outer surface of the nut and is an integral part of the nut. The locking assembly is located between the first limiting assembly and the second limiting assembly. The nut is rotatably engaged with the housing structure, and the locking assembly drives the first limiting assembly or the second limiting assembly to elastically resist the ratchet; When the first limiting component abuts against the ratchet, the housing structure can only drive the nut to rotate from the first direction. When the housing structure rotates in the second direction, the housing structure rotates freely relative to the nut. When the second limiting component abuts against the ratchet, the housing structure can only drive the nut to rotate from the second direction. When the housing structure rotates in the first direction, the housing structure rotates freely relative to the nut. The first direction and the second direction are respectively clockwise and counterclockwise; The first limiting component includes a first limiting member, the first limiting member includes a first abutting member, and the second limiting component includes a second limiting member, the second limiting member includes a second abutting member; The locking assembly includes a first rotating member and a second rotating member connected together. The first rotating member can drive the second rotating member to rotate relative to the housing structure, so that the second rotating member abuts against the first abutment or the second abutment. The housing structure is provided with a through groove, and the side of the first rotating member is provided with a boss. The first rotating member and the boss are exposed after passing through the through groove. The boss can slide in the through groove to abut against the inner sidewall of the through groove.

2. The locking device as described in claim 1, characterized in that: The first limiting component further includes a first elastic element, and the second limiting component further includes a second elastic element; One end of the first elastic member abuts against the inner wall of the housing structure, and the other end contacts the first limiting member; one end of the second elastic member abuts against the inner wall of the housing structure, and the other end contacts the second limiting member; The locking assembly is rotatable relative to the housing structure to abut against the first limiting member or the second limiting member, and respectively engages the second limiting member or the first limiting member with the ratchet.

3. The locking device as described in claim 2, characterized in that: The first limiting member further includes a first rotating shaft connected to the first abutment member, the first abutment member being rotatable relative to the first rotating shaft, and the side of the first abutment member away from the locking assembly contacting the first elastic member; The second limiting member also includes a second rotating shaft connected to the second abutment member. The second abutment member is rotatable relative to the second rotating shaft, and the side of the second abutment member away from the locking assembly contacts the second elastic member.

4. The locking device as described in claim 3, characterized in that: The first abutment member is provided with a first abutment surface and a second abutment surface. The first abutment surface is located on the side of the first abutment member away from the first rotating shaft, and the second abutment surface is located on the side of the first abutment member opposite to the first elastic member. The second abutment member is provided with a third abutment surface and a fourth abutment surface. The third abutment surface is located on the side of the second abutment member away from the second rotating shaft, and the fourth abutment surface is located on the side of the second abutment member opposite to the second elastic member.

5. The locking device as described in claim 4, characterized in that: The locking assembly is rotatable relative to the housing structure to abut against the first abutment or the second abutment, and respectively engages the second abutment or the first abutment with the ratchet; When the first abutment engages with the ratchet, the ratchet contacts the first abutment surface and the second abutment surface respectively; when the second abutment engages with the ratchet, the ratchet contacts the third abutment surface and the fourth abutment surface respectively.

6. The locking device as described in claim 1, characterized in that: The first rotating member has a locking groove at one end exposed after passing through the groove, and the inner surface of the locking groove cooperates with an external locking device.

7. The locking device as described in claim 3, characterized in that: The shell structure includes a coverable shell and a bottom plate. The inner wall of the shell is provided with a first groove and a second groove. The bottom plate is provided with a first through hole corresponding to the position of the first groove and a second through hole corresponding to the position of the second groove. The top of the first rotating shaft abuts against the first groove, and the bottom passes through the first through hole; the top of the second rotating shaft abuts against the second groove, and the bottom passes through the second through hole.

8. The locking device as described in claim 7, characterized in that: The circumferential outer surface of the nut abuts against the inner wall of the housing in the hollow channel, and the top surface of the ratchet abuts against the inner wall surface of the housing on the side away from the base plate, so as to close the receiving cavity.

9. A device having an anti-theft function, characterized in that, The device includes the locking device according to any one of claims 1-8.

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