Anti-theft bolt

Abstract

The utility model relates to an anti-theft bolt which comprises a bolt body and a bolt cap which are integrally formed, a circular groove is formed in the middle of the bolt cap, a sliding hole is formed in the side wall of the circular groove of the bolt cap, an insertion column is arranged in the sliding hole in a sliding mode, and a reset assembly used for pushing the insertion column to retract into the sliding hole is arranged in the sliding hole. A driving cylinder is detachably inserted into the circular groove, a rotating handle is fixedly connected to the face, facing the outside of the circular groove, of the driving cylinder, a lock hole corresponding to the inserting column is formed in the driving cylinder, and a driving mechanism used for driving the inserting column to be inserted into the lock hole is arranged in the driving cylinder. According to the structure, the anti-theft coefficient is high, if no matched driving cylinder exists, related personnel want to conduct simple machining through some simple tools, it is impossible to insert the bolt body into the circular groove to rotate the bolt body at all, and the anti-theft effect is achieved. Therefore, higher-level safety protection is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-theft bolt. Background Art

[0002] Bolts are widely used as connecting parts in industries, construction, public facilities, transportation and other fields. However, there is a common problem with traditional bolt designs - they are easy to be stolen or illegally disassembled. This not only causes property losses, but also may cause safety hazards, especially when it comes to critical infrastructure.

[0003] At present, some anti-theft bolts on the market mainly play an anti-theft role by providing a special-shaped groove on the top of the bolt cap, such as an anti-theft bolt with the existing patent publication number CN202597387U, which is composed of a bolt body and a bolt cap that are set as one; the bolt body is a cylindrical structure with a thread, and the bolt cap is a semi-spherical structure, the top of the semi-spherical structure is provided with a circular groove, and the center of the circular groove is provided with a column with an octagonal cross-section. An octagonal column is provided in the circular groove, which is actually equivalent to a special-shaped groove. Since the structure of this type of special-shaped groove is relatively simple, it is easier for relevant personnel to use some simple tools for simple processing, which are used to insert the octagonal column into the circular groove to jam the octagonal column, so that this type of anti-theft bolt can be rotated. In view of this, the present application makes improvements to overcome the deficiencies in the prior art and achieve a higher level of security protection. Utility Model Content

[0004] The utility model provides an anti-theft bolt, which solves the above problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is achieved as follows: an anti-theft bolt, comprising an integrally formed bolt body and a bolt cap, a circular groove being provided in the middle of the bolt cap, a sliding hole being provided on the side wall of the circular groove, a plug post being slidably arranged in the sliding hole, a reset component for pushing the plug post to retract into the sliding hole being provided in the sliding hole, a driving cylinder being detachably inserted in the circular groove, a rotating handle being fixedly connected to a side of the driving cylinder facing outside the circular groove, a locking hole corresponding to the plug post being provided in the driving cylinder, a driving mechanism for driving the plug post to be inserted into the locking hole being provided in the driving cylinder, and an unlocking mechanism being provided on the driving cylinder for cooperating with the reset component to push the plug post back into the sliding hole.

[0006] Preferably, the bolt cap is integrally formed with an outer limiting ring at the opening of the sliding hole, and the inner end of the plug column is integrally formed with an inner limiting ring for forming a conflict with the outer limiting ring.

[0007] Preferably, the reset assembly includes a reset spring, and the reset spring is located between the outer limiting ring and the inner limiting ring.

[0008] Preferably, the driving mechanism includes a magnet correspondingly arranged on one side of the lock hole, and the plug post is made of a metal that can be attracted by magnets.

[0009] Preferably, the unlocking mechanism includes a magnetic shielding plate, a slot is provided between the magnet and the plug column and penetrates upward through the rotating handle, the magnetic shielding plate is slidably fitted on the slot, and the upper end of the magnetic shielding plate penetrates through the slot and is fixedly connected to a pressure plate.

[0010] Preferably, an inclined push block is integrally formed on the lower side of the magnetic shielding plate, and a matching inclined surface is formed on the upper side of one end of the plug post facing the magnetic shielding plate.

[0011] Preferably, a compression spring is provided between the pressing plate and the rotating handle, and two ends of the compression spring are fixedly connected to the pressing plate and the rotating handle respectively.

[0012] Preferably, a first alignment line is provided on the driving cylinder, and a second alignment line is provided on the bolt cap, and the first alignment line and the second alignment line are aligned when the lock hole is aligned with the plug column.

[0013] In summary, the beneficial effects of the present invention are:

[0014] 1. When the utility model needs to be rotated to lock or loosen, the driving cylinder is inserted into the circular groove, and the lock hole is aligned with the plug column. The plug column is driven to insert into the lock hole by the driving mechanism. At this time, the bolt cap can be rotated by the rotating handle fixedly connected to the driving cylinder to drive the bolt body to rotate. After the tightening is completed, the plug column is pushed back into the sliding hole through the unlocking mechanism and the reset assembly. At this time, the driving cylinder can be pulled out of the circular groove. The structure has a high anti-theft coefficient. If there is no matching driving cylinder, it is impossible for relevant personnel to rely on some simple tools for simple processing to insert the circular groove to rotate the bolt body, thereby achieving a higher level of security protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2It is a top view of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction;

[0019] Figure 4 It is a structural schematic diagram of the bolt body and the bolt cap in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the driving cylinder and the rotating handle in the utility model.

[0021] In the figure: 1. bolt body; 2. bolt cap; 21. circular groove; 22. sliding hole; 23. outer limit ring; 24. second alignment line; 3. plug column; 31. inner limit ring; 32. matching inclined surface; 4. reset spring; 5. driving cylinder; 50. rotating handle; 51. locking hole; 52. partition groove; 53. first alignment line; 6. magnet; 7. magnetic shielding plate; 71. pressure plate; 72. inclined push block; 73. compression spring. DETAILED DESCRIPTION

[0022] The following will be combined with the attached embodiment of the utility model Figure 1-5 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] like Figures 1 to 5 As shown, the utility model discloses an anti-theft bolt, including an integrally formed bolt body 1 and a bolt cap 2, a circular groove 21 is opened in the middle of the bolt cap 2, a sliding hole 22 is opened on the side wall of the circular groove 21 of the bolt cap 2, a plug post 3 is slidably arranged in the sliding hole 22, and a reset component for pushing the plug post 3 to retract into the sliding hole 22 is provided in the sliding hole 22, in addition, a driving cylinder 5 is detachably inserted in the circular groove 21, and a rotating handle 50 is fixedly connected to the side of the driving cylinder 5 facing the outside of the circular groove 21, and the rotating handle 50 is used for the user to rotate, wherein a locking hole 51 corresponding to the plug post 3 is opened on the driving cylinder 5, and a driving mechanism for driving the plug post 3 to insert into the locking hole 51 is provided in the driving cylinder 5, and then, an unlocking mechanism for cooperating with the reset component to push the plug post 3 back into the sliding hole 22 is also provided on the driving cylinder 5.

[0025] Furthermore, the bolt cap 2 is integrally formed with an outer limit ring 23 at the opening of the sliding hole 22, and the inner end of the plug column 3 is integrally formed with an inner limit ring 31 for interfering with the outer limit ring 23. This structure can prevent the plug column 3 from slipping out of the sliding hole 22. Furthermore, the reset assembly includes a reset spring 4, which is located between the outer limit ring 23 and the inner limit ring 31. The reset spring 4 is used to push the plug column 3 to retract into the sliding hole 22.

[0026] In the utility model, the driving mechanism includes a magnet 6 correspondingly arranged on one side of the locking hole 51, and the plug post 3 is made of a metal that can be magnetically attracted. When the driving cylinder 5 is inserted into the circular groove 21 and the locking hole 51 is aligned with the plug post 3, the magnet 6 can attract the plug post 3 through magnetic force to compress the reset spring 4 and insert it into the locking hole 51.

[0027] Furthermore, the unlocking mechanism includes a magnetic shielding plate 7, and a partition groove 52 that penetrates the rotating handle 50 upward is provided between the magnet 6 and the plug column 3, the magnetic shielding plate 7 is slidably fitted on the partition groove 52, and the upper end of the magnetic shielding plate 7 penetrates the partition groove 52 and is fixedly connected with a pressure plate 71, the magnetic shielding plate 7 can be made of Permalloy or Mu metal, and by pushing the magnetic shielding plate 7 into between the magnet 6 and the plug column 3, the suction force of the magnet 6 on the plug column 3 can be effectively reduced, so that the reset spring 4 can push the plug column 3 back into the sliding hole 22. It should be noted that the suction force of the magnet 6 and the force that the reset spring 4 can push the plug column 3 after being compressed need to be calculated and matched, that is, in the absence of the magnetic shielding plate 7, the suction force of the magnet 6 can be sufficient to attract the plug column 3 to compress the reset spring 4 and insert it into the lock hole 51, and when the magnetic shielding plate 7 is located between the magnet 6 and the plug column 3, the reset spring 4 can overcome the tiny magnetic force and push the plug column 3 to retract into the sliding hole 22.

[0028] In order to further improve the efficiency of the reset spring 4 in pushing the plug post 3 to retract into the sliding hole 22, an inclined push block 72 is integrally formed on the lower side of the magnetic shielding plate 7, and a matching inclined surface 32 is provided on the upper side of one end of the plug post 3 facing the magnetic shielding plate 7. Therefore, when the magnetic shielding plate 7 is inserted downward between the magnet 6 and the plug post 3, the magnetic shielding plate 7 can push the matching inclined surface 32 through the inclined push block 72 to move the plug post 3 away from the magnet 6. In this way, combined with the action of the reset spring 4, the plug post 3 can be efficiently returned to the plug post 3.

[0029] In addition, a compression spring 73 is provided between the pressing plate 71 and the rotating handle 50 , and two ends of the compression spring 73 are fixedly connected to the pressing plate 71 and the rotating handle 50 , respectively. The compression spring 73 is used to automatically reset the magnetic shielding plate 7 upward.

[0030] Finally, in order to better and more accurately align the locking hole 51 with the plug column 3, a first alignment line 53 is provided on the driving cylinder 5, and a second alignment line 24 is provided on the bolt cap 2. The first alignment line 53 and the second alignment line 24 are aligned when the locking hole 51 is aligned with the plug column 3.

[0031] When the utility model needs to be rotated to lock or loosen, the driving cylinder 5 is inserted into the circular groove 21, and the locking hole 51 is aligned with the plug post 3 with the assistance of the first alignment line 53 and the second alignment line 24, and the plug post 3 is driven to insert the locking hole 51 by the action of the magnet 6. At this time, the bolt nut 2 can be rotated by the rotating handle 50 fixedly connected to the driving cylinder 5 to drive the bolt body 1 to rotate. After the tightening is completed, the pressure plate 71 is pressed to push the magnetic shielding plate 7 downward to enter between the magnet 6 and the plug post 3, and the inclined push block 72 on the magnetic shielding plate 7 will push the matching inclined surface 32 to make the plug post 3 away from the magnet 6, and then cooperate with the action of the reset spring 4 to push the plug post 3 back into the sliding hole 22, At this time, the driving cylinder 5 can be pulled out of the circular groove 21. The structure has a high anti-theft coefficient. If there is no matching driving cylinder 5, it is impossible for relevant personnel to rely on some simple tools for simple processing to insert the circular groove 21 to rotate the bolt body 1, thereby achieving a higher level of safety protection.

[0032] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft bolt, comprising an integrally formed bolt body and a bolt cap, characterized in that: A circular groove is provided in the middle portion of the bolt nut, and a sliding hole is provided on the side wall of the circular groove of the bolt nut. A plug post is slidably arranged in the sliding hole, and a reset component for pushing the plug post to retract into the sliding hole is provided in the sliding hole. A driving cylinder is detachably inserted in the circular groove, and a rotating handle is fixedly connected to the side of the driving cylinder facing the outside of the circular groove. A locking hole corresponding to the plug post is provided on the driving cylinder, and a driving mechanism for driving the plug post to be inserted into the locking hole is provided in the driving cylinder, and an unlocking mechanism for cooperating with the reset component to push the plug post back into the sliding hole is provided on the driving cylinder.

2. The anti-theft bolt according to claim 1, characterized in that: The bolt cap is integrally formed with an outer limiting ring at the opening of the sliding hole, and the inner end of the plug column is integrally formed with an inner limiting ring for forming a conflict with the outer limiting ring.

3. The anti-theft bolt according to claim 2, characterized in that: The reset assembly includes a reset spring, and the reset spring is located between the outer limiting ring and the inner limiting ring.

4. The anti-theft bolt according to claim 1, characterized in that: The driving mechanism comprises a magnet correspondingly arranged on one side of the lock hole, and the plug post is made of metal that can be attracted by magnets.

5. The anti-theft bolt according to claim 4, characterized in that: The unlocking mechanism includes a magnetic shielding plate, a partition groove penetrating upwardly through the rotating handle is provided between the magnet and the plug column, the magnetic shielding plate is slidably fitted on the partition groove, and the upper end of the magnetic shielding plate penetrates through the partition groove and is fixedly connected to a pressure plate.

6. The anti-theft bolt according to claim 5, characterized in that: An inclined push block is integrally formed on the lower side of the magnetic shielding plate, and a matching inclined surface is formed on the upper side of one end of the plug post facing the magnetic shielding plate.

7. The anti-theft bolt according to claim 5, characterized in that: A compression spring is arranged between the pressing plate and the rotating handle, and two ends of the compression spring are respectively fixedly connected to the pressing plate and the rotating handle.

8. The anti-theft bolt according to claim 1, characterized in that: The driving cylinder is provided with a first alignment line, and the bolt cap is provided with a second alignment line, and the first alignment line and the second alignment line are aligned when the lock hole is aligned with the plug column.

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