Anti-theft bolt structure and dismounting tool

Abstract

The utility model relates to an anti-theft bolt structure which is characterized in that the anti-theft bolt structure comprises a screw rod and a screw cap, the screw cap can be in threaded fit with the screw rod, a mounting groove with a groove opening opposite to the screw rod is formed in the screw cap, an anti-theft nut is arranged in the mounting groove, and the anti-theft nut can be in threaded fit with the screw rod. The anti-theft nut is used for limiting movement of the nut in the screw withdrawing direction, and a gap is formed between the peripheral wall of the anti-theft nut and the peripheral wall of the mounting groove. The anti-theft lock has the advantages that the anti-theft performance of the anti-theft lock can be effectively improved, and the anti-theft lock is prevented from being disassembled by mistake.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an anti-theft bolt structure and a disassembly tool. Background Art

[0002] When in use, bolts are usually used in conjunction with nuts, and the threaded connection between the nut and the screw is used to fix or release the bolts. They are widely used in the connection and fixation of mechanical parts.

[0003] For example, a Chinese patent document with announcement number CN219432260U discloses an anti-loosening bolt, including a bolt body and an anti-loosening mechanism, wherein the bolt body includes a screw rod, a first cavity is opened at the upper end of the screw rod, a second cavity is opened inside the screw rod at the bottom side close to the first cavity, a limiting block is slidably connected inside the second cavity, a movable groove is opened in the limiting block, a first spring is fixedly installed on one side of the interior of the second cavity, one end of the first spring is fixedly connected to one end of the limiting block, the anti-loosening mechanism includes a gasket and a nut, the gasket is sleeved on the outside of the screw rod, a plurality of limiting grooves are opened on the inside of the gasket, the limiting grooves are clearance-matched with one end of the limiting block, and the nut is threadedly connected to the bottom end of the screw rod.

[0004] It can be seen from the above disclosed content that in the above technical scheme, by setting a first anti-loosening spike at the bottom end of the gasket, and setting a second anti-loosening spike at the upper and lower ends of the nut, when the screw and the nut are threadedly connected, the first anti-loosening spike and the second anti-loosening spike are in contact with the fixed object, and the friction between the fixed object is increased, thereby further preventing the screw from loosening.

[0005] However, although the bolt structure improves the stability after locking, it can be disassembled through a conventional sleeve, which makes it easy to be disassembled by mistake during use, and the overall anti-theft performance is poor. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an anti-theft bolt structure, which can effectively improve its anti-theft performance and prevent it from being disassembled by mistake. Another purpose of the utility model is to provide an anti-theft bolt disassembly tool.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-theft bolt structure, comprising a screw and a nut, the nut can form a threaded fit with the screw, the nut is provided with an installation groove with a notch facing away from the screw, the installation groove is provided with an anti-theft nut, the anti-theft nut can form a threaded fit with the screw, the anti-theft nut is used to limit the movement of the nut along the thread withdrawal direction, and a spacing is provided between the peripheral wall of the anti-theft nut and the peripheral wall of the installation groove.

[0008] The utility model is further configured as follows: a symmetrical receiving groove is provided on the peripheral wall of the anti-theft nut, a pin is provided in the receiving groove, a spring is provided between the pin and the receiving groove, one end of the spring is fixed to the bottom of the receiving groove, and the other end is fixed to the pin, the pin part extends outside the receiving groove as an extended end, and the extended end is used to limit the fit between the conventional sleeve and the anti-theft nut.

[0009] The utility model is further configured as follows: a flat washer is provided between the screw rod and the nut.

[0010] Another purpose of the utility model is to provide an anti-theft bolt disassembly and assembly tool, including a sleeve, the sleeve is used to disassemble and assemble the above-mentioned anti-theft bolt structure, the sleeve is provided with a connecting rod, and the connecting rod is provided with a force application handle.

[0011] The utility model is further configured as follows: a fitting groove is provided in the sleeve, and the height of the inner wall of the sleeve gradually decreases along the direction toward the connecting rod to form an inclined guide portion, and the guide portion is used to squeeze the pin into the accommodating groove, and a fitting area is formed between the bottom of the guide portion and the bottom of the fitting groove, and the fitting area is adapted to the specifications of the anti-theft nut.

[0012] The utility model is further configured as follows: a guide portion is vertically fixed on the top end of the guide portion.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By arranging an anti-theft nut in the installation groove of the nut, after the anti-theft nut is tightened on the screw, the anti-theft nut supports the nut so that the anti-theft nut can limit the movement of the nut along the thread withdrawal direction, so that the screw cannot be removed by only turning the nut, thereby improving the overall anti-theft performance. If the screw needs to be removed, the anti-theft nut needs to be removed first before the nut can be turned. Therefore, the technical problem that the bolts are easily removed by mistake in the prior art is effectively solved, and the cross-section of the anti-theft nut can be further set to a non-standard part to prevent it from being disassembled by a conventional sleeve, thereby further improving the anti-theft performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the anti-theft bolt of the utility model;

[0016] Figure 2 This is a schematic diagram of the bottom view of the anti-theft bolt of the utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the disassembly and assembly tool of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the disassembly and assembly tool of the utility model when it cooperates with the anti-theft bolt. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1 to Figure 2 The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32. The nut 2 is preferably provided with a screw cap 21 and a nut 32.

[0022] In this embodiment, a symmetrical receiving groove 31 is further provided on the peripheral wall of the anti-theft nut 3, a pin 4 is provided in the receiving groove 31, a spring 5 is provided between the pin 4 and the receiving groove 31, one end of the spring 5 is fixed to the bottom of the receiving groove 31, and the other end is fixed to the pin 4, and a part of the pin 4 extends outside the receiving groove 31 as an extended end 41. The spring 5 pushes a part of the pin 4 out of the receiving groove 31, so that the extended end 41 of the pin 4 can limit the fit between the conventional sleeve and the anti-theft nut 3, so as to prevent the anti-theft nut 3 from being rotated by the conventional sleeve, thereby further improving the anti-theft performance.

[0023] In this embodiment, a flat washer 6 is further provided between the screw rod 1 and the nut 2 , and the flat washer 6 is an anti-skid flat washer 6 , so as to improve the stability of the screw rod 1 when being tightened.

[0024] like Figure 3 to Figure 4 As shown, this embodiment also discloses an anti-theft bolt disassembly and assembly tool, including a sleeve 7, which is used to disassemble and assemble the above-mentioned anti-theft bolt structure. A connecting rod 8 is provided on the sleeve 7, and a force handle 9 is provided on the connecting rod 8. The setting of the force handle 9 can facilitate the rotation of the sleeve 7, making it more convenient to disassemble and assemble the above-mentioned anti-theft bolt.

[0025] In this embodiment, a fitting groove is provided in the sleeve 7, and the height of the inner wall of the sleeve 7 gradually decreases along the direction toward the connecting rod 8 to form an inclined guide portion 71. The guide portion 71 is used to squeeze the pin 4 into the accommodating groove 31, and a fitting area 72 is formed between the bottom of the guide portion 71 and the bottom of the fitting groove. The fitting area 72 is adapted to the specifications of the anti-theft nut 3. When the anti-theft nut 3 needs to be rotated, the sleeve 7 is inserted into the mounting groove 21. Due to the setting of the guide portion 71, the inner diameter of the fitting groove gradually decreases away from the groove. Therefore, during the insertion process of the sleeve 7, the guide portion 71 can squeeze the pin 4 into the accommodating groove 31 as it couples with the extension end 41 of the pin 4, until the fitting area 72 can fit with the peripheral wall of the anti-theft nut 2. At this time, the anti-theft nut 3 can be rotated normally to realize the disassembly and assembly of the anti-theft bolt.

[0026] In this embodiment, a guide portion 73 is further vertically fixed at the top of the guide portion 71. The guide portion 73 can guide the insertion path of the sleeve 7 when the sleeve 7 is inserted into the installation groove 21, thereby facilitating the coupling of the guide portion 71 with the extension end 41 of the pin 4.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An anti-theft bolt structure, characterized in that: It includes a screw and a nut, the nut can form a threaded match with the screw, the nut is provided with a mounting groove with a notch facing away from the screw, the mounting groove is provided with an anti-theft nut, the anti-theft nut can form a threaded match with the screw, the anti-theft nut is used to limit the movement of the nut along the thread withdrawal direction, and a spacing is provided between the peripheral wall of the anti-theft nut and the peripheral wall of the mounting groove.

2. The anti-theft bolt structure according to claim 1, characterized in that: The peripheral wall of the anti-theft nut is provided with a symmetrical receiving groove, a pin is provided in the receiving groove, a spring is provided between the pin and the receiving groove, one end of the spring is fixed to the bottom of the receiving groove, and the other end is fixed to the pin. The pin part extends outside the receiving groove as an extended end, and the extended end is used to limit the fit between the sleeve and the anti-theft nut.

3. The anti-theft bolt structure according to claim 2, characterized in that: A flat washer is arranged between the screw rod and the nut.

4. An anti-theft bolt disassembly tool, characterized in that: It comprises a sleeve, which is used for disassembling and assembling the anti-theft bolt structure according to claim 3, and a connecting rod is provided on the sleeve, and a force applying handle is provided on the connecting rod.

5. The anti-theft bolt disassembly tool according to claim 4, characterized in that: A fitting groove is provided in the sleeve, and the height of the inner wall of the sleeve gradually decreases along the direction toward the connecting rod to form an inclined guide portion, which is used to squeeze the pin into the accommodating groove. A fitting area is formed between the bottom of the guide portion and the bottom of the fitting groove, and the fitting area is adapted to the specifications of the anti-theft nut.

6. The anti-theft bolt disassembly tool according to claim 5, characterized in that: A guide portion is vertically fixed on the top end of the guide portion.

Images