Stable bidirectional reverse fastening bolt

Abstract

The utility model relates to the technical field of fastening bolts, in particular to a stable two-way reverse fastening bolt which comprises a center head, an adjusting nut, a second extrusion body and a liquid adding cavity, bolt heads are fixed to the two sides of the center head, end heads are welded to the ends of the bolt heads, first built-in grooves are formed in the end heads, first bolt caps are arranged on the bolt heads in a threaded mode, and second bolt caps are arranged on the adjusting nut. A second built-in groove is formed in the bolt cap I; the bolt heads on the two sides of the center head are matched with any bolt cap, overall assembly of the bolt can be achieved, the bolt head parts can be conveniently rotated by a tool through the end head parts, rotation operation of the end heads can be achieved through a wrench or a straight screwdriver or a plum blossom screwdriver, and through the hexagonal structures of the bolt caps, the bolt head parts can be conveniently assembled. The bolt cap and the bolt head can be assembled in a butt joint mode, the second built-in groove and the metal inserting rod are inserted in a butt joint mode, rotation operation is conducted, and the installation flexibility of the bolt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening bolts, in particular to a stable bidirectional reverse fastening bolt. Background Art

[0002] Fastening bolts are widely used in the field of installation. They cooperate with the expansion tube on the screw to achieve a stronger fixing function.

[0003] A Chinese patent discloses an anti-loosening bolt (authorization announcement number CN 218235783 U). This patented technology can stabilize the fastening nut by setting an anti-loosening component to avoid loosening of the overall bolt and affecting the fixing effect of the fixing part. However, since the fastening bolt generally only has an expansion tube at the tail end, the device can only achieve the fastening effect at the bottom of the corresponding screw hole, and there is residual space at other positions, and the stability is not high. It often does not have a liquid guide structure, which is not convenient for users to add protective glue, lubricating liquid, etc. to the inside of the screw hole. The installation method of the bolt will be divided into active matching of the bolt cap with the fixed-point bolt head or active matching of the bolt head with the fixed-point bolt cap according to actual needs.

[0004] Therefore, those skilled in the art provide a stable bidirectional reverse fastening bolt to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a stable bidirectional reverse fastening bolt, including a center head, an adjusting nut, a second extrusion body and a liquid adding chamber, bolt heads are fixed on both sides of the center head, a terminal head is welded at the end of the bolt head, a first built-in groove is arranged on the terminal head, a bolt cap is threadedly arranged on the bolt head, and a second built-in groove is arranged on the bolt cap;

[0006] The adjusting nut is threadedly connected to one end of the center head, and the second extrusion body is welded to the other end of the center head; a second expansion tube is sleeved on the center head at one end of the second extrusion body, a first extrusion body is welded on the center head of the second expansion tube close to one end of the adjusting nut, a first expansion tube is sleeved on the center head of the first extrusion body close to one end of the adjusting nut, reserved cracks are evenly arranged on the first expansion tube and the second expansion tube, a liquid adding cavity is arranged at the middle position inside the center head, a plugging rod is installed inside the liquid adding cavity, a nut is welded on one end of the plugging rod, and a second protective gasket and a first protective gasket are installed on one end of the adjusting nut close to the first expansion tube;

[0007] An expansion guide port is welded on one end of the first expansion tube and the second expansion tube away from the adjusting nut, and the first expansion tube and the second expansion tube with reserved cracks are sleeved on the central head, and the first extrusion body and the second extrusion body matching the first expansion tube and the second expansion tube are welded on the central head; the first expansion tube and the second expansion tube are evenly provided with connection holes matching the block on one end close to the central head; a plugging rod with a nut threadedly installed on the liquid adding chamber;

[0008] A first extrusion body and a second extrusion body matching the first expansion tube and the second expansion tube are welded on the central head.

[0009] Preferably: the center head and the bolt head are both cylindrical structures, which can reduce the tapping length of a long bolt, improve the deformation resistance of the entire bolt, and save processing time. The end head and the bolt cap are both hexagonal structures, which are easy to cooperate with a wrench and can be quickly installed. The first built-in groove is a cross groove structure, and the end head can be rotated by a wrench or a straight screwdriver or a plum screwdriver.

[0010] Preferably: the second built-in grooves are evenly distributed and can be inserted and docked with the metal rod for rotation, thereby improving the flexibility of its installation; the center head, bolt head and bolt cap are all made of solid stainless steel material; the solid stainless steel structure has good corrosion resistance and rust resistance, and the overall compressive strength is high, thereby improving its durability; a threaded connection is formed between the liquid adding chamber and the sealing rod; a liquid adding chamber is provided inside the center head, and a sealing rod with a nut is threadedly installed on the liquid adding chamber, thereby making it convenient for users to use this structure to add buffer, lubricating fluid or reinforcing mucus to the inside of the screw hole, thereby enhancing the functionality of the device.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model can realize the overall assembly of the bolt by cooperating the bolt heads on both sides of the center head with any bolt cap. The end head part is convenient for the tool to rotate the bolt head part. The end head can be rotated by a wrench or a straight screwdriver or a plum screwdriver. The hexagonal structure of the bolt cap can realize the assembly docking of the bolt cap and the bolt head. The second built-in groove and the metal plug rod are inserted and docked to perform the rotation operation, thereby improving the flexibility of its installation.

[0013] 2. A liquid adding chamber is provided inside the center head, and a plugging rod with a nut is threadedly installed on the liquid adding chamber, so that the user can use this structure to add buffer, lubricating liquid or reinforcing mucus to the inside of the screw hole, thereby enhancing the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of a stable bidirectional reverse fastening bolt provided in an embodiment of the present application. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of a stable bidirectional reverse fastening bolt provided in an embodiment of the present application. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of a stable bidirectional reverse fastening bolt provided in an embodiment of the present application. Figure 3 ;

[0017] Figure 4 It is a structural schematic diagram of a liquid adding chamber in a stable bidirectional reverse fastening bolt provided by an embodiment of the present application;

[0018] Figure 5 It is a structural schematic diagram of an expansion guide opening and a reserved crack in a stable bidirectional reverse fastening bolt provided in an embodiment of the present application;

[0019] Figure 6 It is a structural schematic diagram of a blocking rod in a stable bidirectional reverse fastening bolt provided by an embodiment of the present application;

[0020] Figure 7 This is a stable bidirectional reverse fastening bolt provided in the embodiment of the present application. Figure 6 Schematic diagram of the structure at A in the middle.

[0021] In the figure: 1. center head; 11. bolt head; 12. end head; 13. first built-in groove; 14. bolt cap; 15. second built-in groove; 16. adjusting nut; 17. first expansion tube; 18. second expansion tube; 19. plugging rod; 20. first extrusion body; 21. second extrusion body; 22. first protective gasket; 23. second protective gasket; 24. nut; 25. expansion guide port; 26. reserved crack; 27. liquid adding chamber. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes. Example 1

[0023] See also Figures 1 to 7In this embodiment, a stable bidirectional reverse fastening bolt is provided, including a center head 1, an adjusting nut 16, a second extrusion body 21 and a liquid adding chamber 27. Bolt heads 11 are fixed on both sides of the center head 1. An end head 12 is welded to the end of the bolt head 11. A first built-in groove 13 is arranged on the end head 12. A bolt cap 14 is threadedly arranged on the bolt head 11. A second built-in groove 15 is arranged on the bolt cap 14. Both the center head 1 and the bolt head 11 are cylindrical structures, which can reduce the tapping length of a longer bolt, improve the deformation resistance of the entire bolt, and save processing time.

[0024] The end head 12 and the bolt cap 14 are both hexagonal structures, which are convenient for cooperation with a wrench and can be quickly installed. The first built-in groove 13 is a cross groove structure, and the end head 12 can be rotated by a wrench or a straight screwdriver or a Phillips screwdriver. The second built-in grooves are evenly distributed and can be inserted and docked with the metal plug rod for rotation, thereby improving the flexibility of its installation;

[0025] The center head 1, the bolt head 11 and the bolt cap 14 are all made of solid stainless steel. The solid stainless steel structure has good corrosion resistance and rust resistance, and the overall compressive strength is high, thereby improving its durability.

[0026] The adjusting nut 16 is threadedly connected to one end of the center head 1, and the second extrusion body 21 is welded to the other end of the center head; a second expansion tube 18 is sleeved on the center head 1 at one end of the second extrusion body 21, and a first extrusion body 20 is welded on the center head 1 at one end of the second expansion tube 18 close to the adjusting nut 16, and a first expansion tube 17 is sleeved on the center head 1 at one end of the first extrusion body 20 close to the adjusting nut 16, and reserved cracks 26 are evenly arranged on the first expansion tube 17 and the second expansion tube 18, and a liquid adding chamber 27 is arranged at the middle position inside the center head 1, and a plugging rod 19 is installed inside the liquid adding chamber 27, and a nut 24 is welded on one end of the plugging rod 19, and a second protective gasket 23 and a first protective gasket 22 are installed on one end of the adjusting nut 16 close to the first expansion tube 17;

[0027] When in use, by adding a second protective gasket 23 and a first protective gasket 22 to one end of the adjusting nut 16, the sealing and firmness of the device when installed in the corresponding position are improved; the first expansion tube 17 and the second expansion tube 18 are welded with an expansion guide port 25 at one end away from the adjusting nut 16, and the first expansion tube 17 and the second expansion tube 18 with a reserved crack 26 are sleeved on the center head 1, and the first extrusion body 20 and the second extrusion body 21 matching the first expansion tube 17 and the second expansion tube 18 are welded on the center head 1, so that the device can achieve a two-way expansion and tightening effect, thereby improving the safety of the device. Stability during installation; the first expansion tube 17 and the second expansion tube 18 are evenly provided with connection holes matching the block at one end close to the center head 1. When in use, the anti-skid silicone rubber layer fixed on the outer wall of the first expansion tube 17 and the second expansion tube 18 is used to improve the anti-skid stability of the first expansion tube 17 and the second expansion tube 18 when they expand against the inner wall of the screw hole; a threaded connection is formed between the liquid adding chamber 27 and the plugging rod 19; the plugging rod 19 with a nut 24 is threadedly installed on the liquid adding chamber 27, so that the user can use this structure to add buffer, lubricant or reinforcing mucus to the inside of the screw hole, thereby enhancing the functionality of the device;

[0028] When the embodiment of the present application is in use: the user can insert the center head 1 into the screw hole at the corresponding position along the blocking rod 19, and then rotate the adjusting nut 16 to drive the center head 1, the second extrusion body 21 and the first extrusion body 20 that are welded together to slowly withdraw. During this process, the second extrusion body 21 and the first extrusion body 20 will be embedded in the second expansion tube 18 and the first expansion tube 17 respectively. By utilizing the reserved cracks 26 set on the outer walls of the first expansion tube 17 and the second expansion tube 18, the two will expand and press the inner wall of the screw hole to achieve a tightening effect, thereby not only the first expansion tube 17 and the second expansion tube 18 with the reserved cracks 26 are sleeved on the center head 1, but also the center head 1 is welded with a first extrusion body 20 and a second extrusion body 21 which match the first expansion tube 17 and the second expansion tube 18, so that the device can achieve a two-way expansion and tightening effect, thereby improving the stability of the device during installation. The anti-skid silicone rubber layer fixed on the outer wall of the first expansion tube 17 and the second expansion tube 18 improves the anti-skid stability when the first expansion tube 17 and the second expansion tube 18 expand against the inner wall of the screw hole. At the same time, a liquid adding chamber 27 is provided inside the center head 1, and a sealing rod 19 with a nut 24 is threadedly installed on the liquid adding chamber 27, so that the user can use this structure to add a buffer, a lubricating liquid or a reinforcing mucus to the inside of the screw hole, thereby enhancing the functionality of the device.

[0029] The overall assembly of the bolt can be achieved by cooperating the bolt heads 11 on both sides of the center head 1 with any bolt cap 14. The end head 12 is convenient for the tool to rotate the bolt head 11. The end head 12 can be rotated by a wrench or a straight screwdriver or a plum screwdriver. The hexagonal structure of the bolt cap 14 can realize the assembly and docking of the bolt cap 14 and the bolt head 11. The second built-in groove 15 is inserted and docked with the metal rod for rotation, thereby improving its installation flexibility.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A stable bidirectional reverse fastening bolt, comprising a center head (1), an adjusting nut (16), a second extrusion body (21) and a liquid adding chamber (27), characterized in that: Bolt heads (11) are fixed on both sides of the center head (1), a terminal head (12) is welded to the end of the bolt head (11), a first built-in groove (13) is provided on the terminal head (12), a bolt cap (14) is threadedly provided on the bolt head (11), and a second built-in groove (15) is provided on the bolt cap (14); The adjusting nut (16) is threadedly connected to one end of the center head (1), and the second extrusion body (21) is welded to the other end of the center head (1); a second expansion tube (18) is sleeved on the center head (1) at one end of the second extrusion body (21); a first extrusion body (20) is welded to the center head (1) at one end of the second expansion tube (18) close to the adjusting nut (16); a first expansion tube (17) is sleeved on the center head (1) at one end of the first extrusion body (20) close to the adjusting nut (16); reserved cracks (26) are evenly arranged on the first expansion tube (17) and the second expansion tube (18); a liquid adding chamber (27) is arranged at a middle position inside the center head (1); a plugging rod (19) is installed inside the liquid adding chamber (27); a nut (24) is welded to one end of the plugging rod (19); a second protective gasket (23) and a first protective gasket (22) are installed on one end of the adjusting nut (16) close to the first expansion tube (17); An expansion guide port (25) is welded to one end of the first expansion tube (17) and the second expansion tube (18) away from the adjusting nut (16); the first expansion tube (17) and the second expansion tube (18) with a reserved crack (26) are sleeved on the center head (1); a first extrusion body (20) and a second extrusion body (21) matching the first expansion tube (17) and the second expansion tube (18) are welded to the center head (1); connection holes matching the block are evenly arranged at one end of the first expansion tube (17) and the second expansion tube (18) close to the center head (1); and a plugging rod (19) with a nut (24) is threadedly mounted on the liquid adding chamber (27); A first extrusion body (20) and a second extrusion body (21) matching the first expansion tube (17) and the second expansion tube (18) are welded to the center head (1).

2. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: The center head (1) and the bolt head (11) are both cylindrical structures.

3. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: The end head (12) and the bolt cap (14) are both hexagonal structures.

4. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: The first built-in groove (13) is a cross groove structure.

5. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: The second built-in grooves (15) are evenly distributed.

6. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: The center head (1), the bolt head (11) and the bolt cap (14) are all made of solid stainless steel material.

7. A stable bidirectional reverse fastening bolt according to claim 1, characterized in that: A threaded connection is formed between the liquid adding chamber (27) and the plugging rod (19), wherein the liquid adding chamber (27) is provided inside the center head (1), and a plugging rod (19) with a nut (24) is threadedly mounted on the liquid adding chamber (27).

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