High-strength fastener

Abstract

The utility model relates to the technical field of fasteners, and discloses a high-strength fastener which comprises a head portion, a round groove is formed in the upper surface of the head portion, a through round hole is formed in the center of the groove, and a cross groove is formed in the position, making contact with the bottom of the groove, of the round hole. The rod part is fixedly arranged below the head part, and a through cavity is formed in the middle of the rod part; the reinforcing mechanism is arranged in the cavity of the rod part; wherein the reinforcing mechanism comprises four arc-shaped blocks which are arranged in the cavity of the rod part; the side edge grooves are formed in the rod part, the side edge grooves are evenly formed in the rod part, and the side edge grooves penetrate into the cavity of the rod part; the reinforcing rod penetrates through the round hole and is arranged among the four arc-shaped blocks, a reinforcing cap is arranged at the top end of the reinforcing rod, and the diameter of the end, close to the reinforcing cap, of the reinforcing rod is smaller than that of the end, away from the reinforcing cap, of the reinforcing rod. According to the high-strength fastener, the problem that an existing fastener is loosened is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and particularly relates to a high-strength fastener. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely applied. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulics, etc. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, meters, and supplies. They are the most widely used mechanical basic parts. In actual use, traditional fasteners need to be rotated by an external wrench or other tools, and through the thread fit on themselves, the locking effect is achieved. Existing fasteners will have their service life greatly reduced due to poor strength during use.

[0003] The Chinese utility model patent with the publication number CN215980358U discloses a high-strength fastener. By equipping a compressive inner cushion block and a protective inner cushion block on the fastener main body, the strength of this high-strength fastener can be made higher through the compressive inner cushion block and the protective inner cushion block, effectively increasing the service life of the fastener, and solving the problem that the service life of existing high-strength fasteners is often greatly reduced due to poor strength during use; at the same time, a protective outer block and a limiting lower strip are equipped. The design of the protective outer block can make the fixation of the limiting lower strip more convenient, and the limiting lower strip can effectively increase the protection of the fastening lower column, solving the problem that the maintenance difficulty of existing high-strength fasteners is often increased due to insufficient protection of the connection part during use. However, this device still has some other problems. For example, when this device is used to connect a connecting piece, the fastener will often be subjected to vibration friction of the connecting piece after connection. Long-term connection will cause the fastener to become loose, reducing the tightness of the connection between the fastener and the connecting piece. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-strength fastener to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the following technical solution is provided: A high-strength fastener, comprising:

[0006] A head, on the upper surface of which there is a circular groove, a through hole is opened at the center of the groove, and a cross groove is opened at the position where the through hole contacts the bottom of the groove;

[0007] A rod portion, fixedly arranged on the lower surface of the head, and a through cavity is arranged in the middle of the rod portion;

[0008] A reinforcement mechanism, disposed in the cavity of the rod portion;

[0009] Wherein, the reinforcement mechanism includes:

[0010] Arc-shaped blocks, disposed inside the cavity of the rod portion, and there are four arc-shaped blocks;

[0011] Side slots, opened on the rod portion, and the side slots are evenly opened on the rod portion, and the side slots penetrate into the cavity of the rod portion;

[0012] Reinforcement rods, the reinforcement rods pass through the round holes and are disposed between the four arc-shaped blocks, a reinforcement cap is provided at the top end of the reinforcement rods, and the diameter of one end of the reinforcement rod close to the reinforcement cap is smaller than the diameter of the end of the reinforcement rod far from the reinforcement cap.

[0013] In the above technical solution, further, the diameter of the reinforcement cap is the same as the diameter of the round hole.

[0014] In any of the above technical solutions, further, internal threads are provided inside the round holes, a section of cylinder is provided at the end of the reinforcement rod in contact with the reinforcement cap, and external threads meshing with the internal threads are provided on the outer surface of the cylinder.

[0015] In any of the above technical solutions, further, a limiting slot is opened between the inner wall of the groove and the head, and two mounting slots penetrating the upper surface of the head are also opened on the limiting slot.

[0016] In any of the above technical solutions, further, a protection block is provided inside the groove, the diameter of the protection block is the same as the diameter of the groove, and limiting blocks having the same shape and size as the mounting slots are provided on both sides of the protection block, and the height of the limiting blocks is the same as the height of the limiting slot.

[0017] In any of the above technical solutions, further, two mounting holes are opened on the head, the two mounting holes are respectively opened on one side of the two mounting slots, the two mounting holes are symmetrically arranged, and two fixing holes are also opened on the limiting blocks, the two fixing holes have the same diameter as the two mounting holes, and a fixing rod is provided between the mounting holes and the fixing holes.

[0018] In any of the above technical solutions, further, the fixing rod is made of elastic rubber material, and the diameter of the fixing rod is smaller than the mounting holes and the fixing holes.

[0019] The beneficial effects of the present utility model are:

[0020] 1. By providing a rod portion on the lower surface of the head, a groove is formed on the upper surface of the head, a through-round hole is formed at the center of the bottom of the groove, the middle of the rod portion is in a through-cavity state, four side grooves are formed on the rod portion, and the rod portion is evenly divided into four plates by the four side grooves. Four arc-shaped blocks are respectively arranged at the same position inside the four plates. A reinforcing rod is arranged with respect to the round hole and the four arc-shaped blocks. A reinforcing cap is arranged on the reinforcing rod. The diameter of one end of the reinforcing rod close to the reinforcing cap is larger than the diameter of the end of the reinforcing rod away from the reinforcing cap. In this way, by changing the contact position between the reinforcing rod and the four arc-shaped blocks through the reinforcing cap, the four arc-shaped blocks can generate the same squeezing force on the four plates of the rod portion, so that the rod portion can be closely attached to the connected part to be fastened, reducing the possibility of looseness between the fastener and the connected part.

[0021] 2. By providing an annular limiting groove between the inner wall of the groove and the head, two symmetrically arranged mounting grooves are formed on the upper surface of the limiting groove, and the mounting grooves extend to the upper surface of the head. A protection block is arranged inside the groove. The diameter of the protection block is the same as the diameter of the groove, so the protection block can rotate inside the groove. At the same time, two symmetrically arranged limiting blocks are designed on the upper surface of the protection block. The shapes and sizes of the limiting blocks and the mounting grooves are the same. At the same time, the protection block can change to any position in the limiting groove. The diameter of the mounting groove is the same as the diameter of the limiting groove. In this way, when the protection block and the limiting blocks are installed into the groove through the mounting grooves, mounting holes are respectively formed on the same side of the two mounting grooves on the head, and the mounting holes extend below the limiting groove. The two mounting holes are symmetrically arranged. At the same time, fixing holes are also respectively formed on the two limiting blocks. The diameters of the fixing holes and the mounting holes are the same. By rotating the position of the protection block inside the groove, the limiting blocks are turned into the limiting groove so that the fixing holes on the limiting blocks are aligned with the mounting holes, and the protection block is fixed inside the groove through fixing rods. In this way, the cross slot of the fastener body is not exposed to the view, thereby preventing people from easily disassembling the fastener from the connected part through the cross slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present utility model;

[0023] Figure 2 is a schematic cross-sectional view of the structure of the present utility model;

[0024] Figure 3 is a schematic cross-sectional view of the structure of the present utility model;

[0025] Explanation of the reference numerals: 100, head; 110, groove; 120, round hole; 130, cross groove; 140, limit groove; 150, mounting groove; 160, protection block; 170, limit block; 180, mounting hole; 190, fixing hole; 200, rod; 210, fixing rod; 300, reinforcement mechanism; 310, arc block; 320, side groove; 330, reinforcement rod; 340, reinforcement cap; 350, cylinder. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0027] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] like Figures 1 - 3 As shown, this embodiment provides a high-strength fastener, comprising:

[0029] A head 100, wherein a circular groove 110 is formed on the upper surface of the head 100, a circular hole 120 is formed through the center of the groove 110, and a cross groove 130 is formed at a position where the circular hole 120 contacts the bottom of the groove 110;

[0030] The rod portion 200 is fixedly disposed on the lower surface of the head portion 100, and a through cavity is provided in the middle of the rod portion 200;

[0031] The reinforcement mechanism 300 is disposed in the cavity of the rod portion 200;

[0032] The reinforcement mechanism 300 includes:

[0033] The arc block 310 is disposed inside the cavity of the rod portion 200, and there are four arc blocks 310;

[0034] Side slots 320 are formed on the rod portion 200, and the side slots 320 are evenly formed on the rod portion 200 and penetrate into the cavity of the rod portion 200.

[0035] Reinforcing rod 330 passes through the round hole 120 and is arranged between the four arc-shaped blocks 310. A reinforcing cap 340 is provided at the top end of the reinforcing rod 330, and the diameter of one end of the reinforcing rod 330 close to the reinforcing cap 340 is smaller than the diameter of the other end of the reinforcing rod 330 away from the reinforcing cap 340.

[0036] In this technical solution, in order to enable the fastener body and the connecting member to be closely combined and prevent loosening, a rod portion 200 is provided on the lower surface of the head 100, a groove 110 is formed on the upper surface of the head 100, a through-round hole 120 is formed at the center of the bottom of the groove 110, the middle of the rod portion 200 is set in a through-cavity state, four side slots 320 are formed on the rod portion 200, and the four side slots 320 divide the rod portion 200 into four plates on average. Four arc-shaped blocks 310 are respectively arranged at the same position inside the four plates. A reinforcing rod 330 is arranged corresponding to the round hole 120 and the four arc-shaped blocks 310, a reinforcing cap 340 is arranged on the reinforcing rod 330, and the diameter of one end of the reinforcing rod 330 close to the reinforcing cap 340 is larger than the diameter of the other end of the reinforcing rod 330 away from the reinforcing cap 340. In this way, by changing the contact position between the reinforcing rod 330 and the four arc-shaped blocks 310 through the reinforcing cap 340, the four arc-shaped blocks 310 can generate the same extrusion force on the four plates of the rod portion 200. The rod portion 200 and the connecting member can be connected by threads through the cross slot 130, and then by changing the contact position between the reinforcing rod 330 and the arc-shaped block 310 through the round hole 120, the reinforcing rod 330 can extrude the arc-shaped block 310, so that the rod portion 200 can be closely attached to the connected connecting member, reducing the possibility of loosening between the fastener and the connecting member. Moreover, the diameter of the area to be reinforced formed by the four arc-shaped blocks 310 is smaller than the diameter of the round hole 120, so that the reinforcing rod 330 passing through the round hole 120 can exert an extrusion force on the four arc-shaped blocks 310, thereby closely attaching the four plates of the rod portion 200 to the inside of the connecting member.

[0037] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0038] As Figure 2 and Figure 3 shown, in this embodiment, the diameter of the reinforcing cap 340 is the same as the diameter of the round hole 120.

[0039] In this technical solution, to facilitate the cooperative use of the reinforcement mechanism 300 with the head 100 and the rod portion 200, the diameter of the reinforcement cap 340 is set to be the same as the diameter of the round hole 120. In this way, the entire reinforcement rod 330 can be inserted into the head 100 and the rod portion 200 through the round hole 120, which can prevent the reinforcement rod 330 from exceeding the head 100 and falling out of the head 100 when the connecting piece vibrates, thereby preventing the rod portion 200 from loosening inside the connecting piece and ensuring a high-strength connection between the fastener body and the connecting piece.

[0040] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0041] As Figure 1 and Figure 3 shown, in this embodiment, internal threads are provided inside the round hole 120. One end of the reinforcement rod 330 in contact with the reinforcement cap 340 is provided with a cylindrical body 350, and external threads meshing with the internal threads are provided on the outer surface of the cylinder 350.

[0042] In this technical solution, to facilitate the reinforcement rod 330 to be fixed between the four arc-shaped blocks 310, internal threads are provided inside the round hole 120, and a cylindrical body 350 with a certain distance is provided at one end of the reinforcement rod 330 close to the reinforcement cap 340. External threads are provided on the outer surface of the cylindrical body 350. Through the external threads, the reinforcement rod 330 can be fixed inside the round hole 120. At the same time, a screw groove for rotation can be provided on the upper surface of the reinforcement cap 340. Through a screwdriver, the reinforcement rod 330 can be rotated into the round hole 120 until the reinforcement rod 330 abuts against the four arc-shaped blocks 310 to generate an appropriate extrusion force, and then stop rotating, so that the reinforcement cap 340 is fixed inside the head 100. In this way, the loosening of the reinforcement rod 330 can be prevented, so that the head 100 and the rod portion 200 can be tightly combined with the connecting piece to prevent loosening.

[0043] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0044] As Figures 1 - 3 shown, in this embodiment, a limiting groove 140 is provided between the inner wall of the groove 110 and the head 100, and two installation grooves 150 penetrating the upper surface of the head 100 are provided on the limiting groove 140.

[0045] In this technical solution, in order to prevent people from pulling out the reinforcement rod 330, a limiting groove 140 is provided at the middle position of the inner wall of the groove 110. The limiting groove 140 is provided at the middle position of the head 100. An installation groove 150 penetrating the upper surface of the head 100 is provided on the upper surface of the limiting groove 140. There are two installation grooves 150, and the two installation grooves 150 are provided at symmetrical positions on the upper surface of the head 100. Through the installation groove 150 and the limiting groove 140, the reinforcement rod 330 can be fixed inside the head 100 and the rod part 200.

[0046] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0047] As Figures 1 - 3 shown, in this embodiment, a protection block 160 is provided inside the groove 110. The diameter of the protection block 160 is the same as the diameter of the groove 110. And two limiting blocks 170 with the same shape and size as the installation groove 150 are provided on both sides of the protection block 160. The height of the limiting block 170 is the same as the height of the limiting groove 140.

[0048] In this technical solution, in order to fix the reinforcement rod 330 inside the head 100 and the rod part 200, a protection block 160 is placed inside the groove 110. The diameter of the protection block 160 is the same as the diameter of the groove 110. The protection block 160 can be placed inside the groove 110 and can rotate inside the groove 110. Two limiting blocks 170 are provided on the outer side of the protection block 160. The shape and size of the limiting block 170 are the same as the shape and size of the installation groove 150. The thickness of the limiting block 170 is also the same as the thickness of the limiting groove 140. The position of the limiting block 170 on the protection block 160 is the same as the position of the installation groove 150 on the groove 110. In this way, the protection block 160 and the limiting block 170 can be put into the groove 110 from the installation groove 150, and then the protection block 160 is rotated to rotate the limiting block 170 from the installation groove 150 into the limiting groove 140. The thickness of the protection block 160 is equal to the distance from the bottom plate of the groove 110 to the upper surface inside the limiting groove 140. The upper surface of the limiting block 170 is flush with the upper surface of the protection block 160. By clamping the limiting block 170 between the limiting groove 140 and the installation groove 150, the protection block 160 can be limited in the head 100, so that the reinforcement rod 330 can be fixed inside the head 100 and the rod part 200, preventing the reinforcement rod 330 from falling off.

[0049] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0050] As Figures 1 - 3As shown, in this embodiment, two mounting holes 180 are provided on the head 100. The two mounting holes 180 are respectively provided on one side of the two mounting grooves 150. The two mounting holes 180 are symmetrically arranged, and two fixing holes 190 are also provided on the limiting block 170. The two fixing holes 190 have the same diameter as the two mounting holes 180, and a fixing rod 210 is provided between the mounting hole 180 and the fixing hole 190.

[0051] In this technical solution, in order to further fix the protection block 160 in the groove 110 of the head 100, mounting holes 180 are respectively provided on the same side of the two mounting grooves 150. The mounting holes 180 are symmetrically provided on the head 100. Fixing holes 190 are provided on one side of the two limiting blocks 170 close to the mounting holes 180. The fixing holes 190 and the mounting holes 180 have the same diameter. By rotating the protection block 160, the end of the limiting block 170 provided with the fixing hole 190 is rotated into the limiting groove 140, the fixing hole 190 and the mounting hole 180 are aligned, and the fixing rod 210 is used for fixing inside the mounting hole 180 and the fixing hole 190. In this way, it can further prevent the protection block 160 from falling off from the groove 110.

[0052] This embodiment provides a high-strength fastener. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0053] As Figure 1 and Figure 2 shown, in this embodiment, the fixing rod 210 is made of elastic rubber material, and the diameter of the fixing rod 210 is smaller than that of the mounting hole 180 and the fixing hole 190.

[0054] In this technical solution, in order to enable the fixing rod 210 to be closely combined with the fixing hole 190 and the mounting hole 180, the fixing rod 210 is made of elastic rubber material, and the diameter of the fixing rod 210 is 0.1 - 0.5 mm smaller than that of the mounting hole 180 and the fixing hole 190. In this way, it can ensure that appropriate extrusion and frictional force can be generated during the insertion process of the fixing rod 210, ensure that the fixing rod 210 can be firmly installed inside the mounting hole 180 and the fixing hole 190, thereby firmly fixing the protection block 160 on the head 100, so that the cross groove 130 and the reinforcement rod 330 are both blocked inside the protection block 160, preventing people from disassembling the fastener body and the falling off of the reinforcement rod 330.

[0055] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A high-strength fastener, characterized in that: include: A head (100), wherein a circular groove (110) is provided on the upper surface of the head (100), a penetrating circular hole (120) is provided at the center of the groove (110), and a cross groove (130) is provided at a position where the circular hole (120) contacts the bottom of the groove (110); A rod portion (200) is fixedly arranged on the lower surface of the head portion (100), and a through cavity is arranged in the middle of the rod portion (200); A reinforcement mechanism (300) is disposed in the cavity of the rod portion (200); Wherein, the reinforcement mechanism (300) comprises: An arc-shaped block (310) is arranged inside the cavity of the rod portion (200), and there are four arc-shaped blocks (310); A side groove (320) is formed on the rod portion (200), and the side groove (320) is evenly formed on the rod portion (200), and the side groove (320) penetrates into the cavity of the rod portion (200); A reinforcing rod (330), the reinforcing rod (330) passing through the circular hole (120) and arranged between the four arc-shaped blocks (310), a reinforcing cap (340) being arranged at the top end of the reinforcing rod (330), and a diameter of an end of the reinforcing rod (330) close to the reinforcing cap (340) being smaller than a diameter of an end of the reinforcing rod (330) away from the reinforcing cap (340).

2. A high-strength fastener according to claim 1, characterized in that: The diameter of the reinforcement cap (340) is the same as the diameter of the circular hole (120).

3. A high-strength fastener according to claim 1, characterized in that: An internal thread is provided inside the circular hole (120); an end of the reinforcement rod (330) in contact with the reinforcement cap (340) is provided with a section of a cylindrical body (350); and an external thread meshing with the internal thread is provided on the outer surface of the cylinder (350).

4. A high-strength fastener according to claim 1, characterized in that: A limiting groove (140) is provided between the inner wall of the groove (110) and the head (100), and two mounting grooves (150) penetrating the upper surface of the head (100) are also provided on the limiting groove (140).

5. A high-strength fastener according to claim 4, characterized in that: A protection block (160) is arranged inside the groove (110), the diameter of the protection block (160) being the same as the diameter of the groove (110), and limiting blocks (170) having the same shape and size as the mounting groove (150) are arranged on both sides of the protection block (160), and the height of the limiting block (170) is the same as the height of the limiting groove (140).

6. A high-strength fastener according to claim 5, characterized in that: Two mounting holes (180) are provided on the head (100), the two mounting holes (180) are respectively provided on one side of the two mounting grooves (150), the two mounting holes (180) are symmetrically arranged, and the limiting block (170) also has two fixing holes (190), the two fixing holes (190) have the same diameter as the two mounting holes (180), and a fixing rod (210) is provided between the mounting hole (180) and the fixing hole (190).

7. A high-strength fastener according to claim 6, characterized in that: The fixing rod (210) is made of an elastic rubber material, and the diameter of the fixing rod (210) is smaller than the mounting hole (180) and the fixing hole (190).

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