CN204629058U - One is anti-unloads anti-loose anti-theft hexagon socket head cap screw device - Google Patents

Abstract

An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device, which is mainly composed of bolts, sealing plugs, tension pins, first anti-loosening pins, and second anti-loosening pins. As the sealing plug gradually deepens, the thin end of the sealing plug will push the tension pin down, and the wedge-shaped surface on the tension pin will push the second anti-loosening pin and the first anti-loosening pin to move left and right respectively, thereby making the first anti-loosening pin, the first anti-loosening pin The pointed end of the second anti-loosening pin presses the threaded surface to prevent loosening. After the installation is completed, the end surface of the sealing plug is flush with the hexagonal end surface of the bolt. Since the big end of the bolt is round, and no force is applied The gap, and then play a role in preventing disassembly, to achieve the purpose of anti-theft. The utility model has the advantages of simple structure, labor-saving construction, high efficiency and quickness, can effectively reduce the processing cost, and has good anti-unloading, anti-loosening and anti-theft effects.

Description

An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device

technical field

The utility model relates to the technical field of fastening devices, in particular to an anti-unloading, anti-loosening and anti-theft hexagon socket bolt device.

Background technique

As fasteners, bolts have been widely used in various industries. Although ordinary bolts have the advantages of simple operation and convenient disassembly, it brings convenience to some criminals who carry out theft, that is, these criminals can artificially disassemble the bolts and carry out theft as long as they use common dismounting wrenches. In order to effectively prevent this kind of illegal behavior, the prior art has carried out the anti-theft structure design to the bolt. At present, the most common anti-unloading and anti-theft bolt structure is to open an axial pin groove on the screw rod of the bolt, and pass through the screw rod arranged on the nut. When the axial pin slots are used together, the user can insert an anti-theft pin into the axial hole formed by the two axial pin slots, thereby preventing abnormal disassembly of the bolts and nuts. The utility model patents with the above-mentioned similar anti-theft structure have been disclosed on the website of the State Intellectual Property Office of China. Bolts" and "slotted wedge type direct sales anti-theft bolts". However, these structures have the disadvantages of high processing difficulty and high cost.

Contents of the invention

The utility model aims at the shortcomings of the existing anti-unloading and anti-loosening bolts, and designs an anti-unloading, anti-loosening and anti-theft inner hexagonal bolt device, which can effectively reduce costs, reduce processing difficulty, facilitate construction, and improve work efficiency.

The utility model is achieved through the following technical measures:

An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device, mainly composed of bolts, sealing plugs, tension pins, first anti-loosening pins, and second anti-loosening pins, the bolts are used to fix parts, the first anti-loosening pins, the second anti-loosening pin The two anti-loosening pins are respectively installed in the through holes of the bolts and are not exposed. The tension pins are installed in the blind holes of the bolts. The wedge-shaped surface of the tension pin is in contact with the wedge-shaped surfaces of the first anti-loosening pin and the second anti-loosening pin. , When tightening the bolts, use a conventional hexagonal wrench to tighten the bolts. After the tightening is completed, install the sealing plug into the big end of the bolt with interference, and install the thin end of the sealing plug into the central blind hole of the bolt, and tap it with a hammer. Hit the sealing plug, as the sealing plug gradually deepens, the thin end of the sealing plug will push the tensioning pin down, and the wedge-shaped surface on the tensioning pin will push the second anti-loosening pin and the first anti-loosening pin to move left and right respectively, so that The pointed ends of the first anti-loosening pin and the second anti-loosening pin press the thread surface to prevent loosening. After the installation is completed, the end face of the sealing plug is flush with the hexagonal end face of the bolt. Shape, and there is no gap for applying force, which prevents disassembly and achieves the purpose of anti-theft.

Both the first anti-loosening pin and the second anti-loosening pin have a wedge-shaped surface at one end and a sharp-edged structure at the other end.

The lower end of the tension pin 3 has a wedge-shaped surface.

The beneficial effects of the utility model are: an anti-unloading, anti-loosening and anti-theft hexagon socket bolt device, through the sealing plug and the tensioning device, realizes the functions of preventing disassembly and preventing loosening, has the advantages of simple structure, labor-saving construction, high efficiency and quickness, and can Effectively reduce processing costs, and anti-unloading, anti-loosening, anti-theft effect is good.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Description of drawings

Fig. 1 is a schematic diagram of the principle structure when the utility model is installed.

Figure 2 is a schematic diagram of the internal structure of the utility model when it is installed.

Fig. 3 is a schematic diagram of the bolt structure of the present invention.

Fig. 4 is a structural schematic diagram of the sealing plug of the present invention.

Fig. 5 is a structural schematic diagram of the sealing plug of the present invention.

Fig. 6 is a structural schematic diagram of the anti-loosening pin of the present invention.

Fig. 7 is a structural schematic diagram of the anti-loosening pin of the present invention.

Fig. 8 is a structural schematic diagram of the tension pin of the present invention.

Fig. 9 is a structural schematic diagram of the tension pin of the present invention.

In the figure: 1-bolt, 2-sealing plug, 3-tension pin, 4-the first anti-loosening pin, 5-the second anti-loosening pin.

Detailed ways

In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation mode and in conjunction with the accompanying drawings.

An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device is mainly composed of a bolt 1, a sealing plug 2, a tension pin 3, a first anti-loosening pin 4, and a second anti-loosening pin 5. The bolt 1 is used to fix parts, such as As shown in Figure 2, the first anti-loosening pin 4 and the second anti-loosening pin 5 are respectively installed in the through holes of the bolt 1, and are not exposed, the tension pin 3 is installed in the blind hole of the bolt 1, and the tension pin 3 is installed in the blind hole of the bolt 1. The wedge-shaped surface is in contact with the wedge-shaped surfaces of the first anti-loosening pin 4 and the second anti-loosening pin 5. When tightening the bolt 1, use a conventional hexagonal wrench to tighten the bolt 1. After the tightening is completed, as shown in Figure 1 and Figure 2 As shown, install the sealing plug 2 to the big end of the bolt 1 with interference, install the thin end of the sealing plug 2 into the central blind hole of the bolt 1, and tap the sealing plug 2 with a hammer. As the sealing plug 2 gradually deepens, the sealing The thin end of the plug 2 will push the tension pin 3 down, and the wedge-shaped surface on the tension pin 3 will push the second anti-loosening pin 5 and the first anti-loosening pin 4 to move left and right respectively, so that the first anti-loosening pin 4 and the second anti-loosening pin The pointed end of the second anti-loosening pin 5 presses the threaded surface to prevent loosening. After the installation is completed, the end face of the sealing plug 2 is flush with the hexagonal end face of the bolt 1. Since the big end of the bolt 1 is circular, and There is no gap for applying force, which in turn prevents disassembly and achieves the purpose of anti-theft.

As shown in FIG. 6 and FIG. 7 , both the first anti-loosening pin 4 and the second anti-loosening pin 5 have a wedge-shaped surface at one end and a sharp-edged structure at the other end.

As shown in Figure 8 and Figure 9, the lower end of the tension pin 3 has a wedge-shaped surface.

Although the preferred examples of the present utility model have been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Under the enlightenment of the utility model, technicians can also make many forms without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims (3)

1. An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device, mainly composed of bolts (1), sealing plugs (2), tension pins (3), first anti-loosening pins (4), second anti-loosening pins (5 ), the bolt (1) is used to fix the components, and it is characterized in that: the first anti-loosening pin (4) and the second anti-loosening pin (5) are respectively installed in the through holes of the bolt (1) and are not exposed, The tension pin (3) is installed in the blind hole of the bolt (1), and the wedge-shaped surface of the tension pin (3) contacts the wedge-shaped surfaces of the first anti-loosening pin (4) and the second anti-loosening pin (5). When tightening the bolt (1), use a conventional hexagonal wrench to tighten the bolt (1). After the tightening is complete, install the sealing plug (2) on the big end of the bolt (1) with an interference fit. The end of the sealing plug (2) is installed into the central blind hole of the bolt (1), and the sealing plug (2) is tapped with a hammer. As the sealing plug (2) gradually deepens, the thin end of the sealing plug (2) will push the tension pin (3) Downward, the wedge-shaped surface on the tension pin (3) will push the second anti-loosening pin (5) and the first anti-loosening pin (4) to move left and right respectively, so that the first anti-loosening pin (4) and the second anti-loosening pin (4) The pointed end of the pin (5) presses the threaded surface to prevent loosening. After the installation is completed, the end surface of the sealing plug (2) is flush with the hexagonal end surface of the bolt (1), because the big end of the bolt (1) It is circular, and there is no space for applying force, so as to prevent disassembly and achieve the purpose of anti-theft. 2. An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device according to claim 1, characterized in that: the first anti-loosening pin (4) and the second anti-loosening pin (5) have wedge-shaped surfaces at one end , and the other end is a pointed structure. 3. An anti-unloading, anti-loosening and anti-theft hexagon socket bolt device according to claim 1, characterized in that: the lower end of the tension pin (3) has a wedge-shaped surface.