A high-strength tack structure

Abstract

This utility model relates to the field of rivet technology, and in particular to a high-strength rivet structure, comprising a rivet rod and a rivet sleeve. The rivet sleeve has a hollow section within a straight groove, and multiple teeth are arranged in a ring within the hollow section. These teeth employ a biomimetic locking design, resembling shark teeth. When the rivet head on the rivet rod is inserted into the rivet sleeve by a rivet gun and expands, the engagement mechanism between the teeth and the rivet head enhances the stress of the sleeve expansion and the strength of the structural interaction, optimizing anti-loosening performance and making it suitable for high-frequency vibration scenarios. Furthermore, a locking groove is provided on the outer side of the upper end of the rivet rod, and a reinforcing ring is provided on the rivet head. When the rivet rod breaks at the neck groove, the locking groove on the neck can engage with the teeth inside the rivet sleeve, and the reinforcing ring on the rivet head further expands and reinforces, thereby enhancing the connection strength of the broken neck rod within the rivet sleeve and further improving anti-loosening performance.

Description

Technical Field

[0001] This utility model relates to the field of rivet technology, and specifically to a high-strength rivet structure. Background Technology

[0002] Blind rivets (also known as pop rivets) are mechanical fasteners that are fastened using a special tool (blind rivet gun). They are mainly used for the rapid riveting of materials such as metal and wood, and are widely used in fields such as electronics, communications, automobiles, and aerospace. They play an important role, especially in the connection of thin-walled metal parts. As an indispensable fastener in modern industry, blind rivets have broad room for innovation in terms of materials, processes, and intelligent application scenarios.

[0003] Currently, existing rivets are used by inserting the head of the rivet shank into a sleeve using a rivet gun, causing the sleeve to expand and thus achieving riveting and fixing. However, since the inner wall of the sleeve and the rivet head are both smooth arc surfaces, the stress of the expansion between the rivet head and the sleeve and the strength of the interaction between the structure are limited. In working conditions with large openings, the rivets are prone to loosening, failing to meet performance requirements and resulting in reduced accuracy.

[0004] Based on this, the present invention designs a high-strength rivet structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-strength rivet structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength pull rivet structure, comprising a rivet rod and a rivet sleeve, wherein the rivet rod is movably inserted into the rivet sleeve;

[0007] The nail sleeve includes a sleeve body, a top plate, a straight groove, a hollow part, teeth, and a concave surface. The top of the sleeve body has a concave surface, the bottom of the sleeve body has a top plate, the inside of the sleeve body has a straight groove, the upper end of the straight groove has a hollow part, and the inner wall of the hollow part has four sets of teeth arranged in a ring.

[0008] As a preferred technical solution of this utility model, the teeth are triangular shark tooth-like structures, and the annular teeth at the same height are connected as a group on the inner wall of the hollow part.

[0009] As a preferred technical solution of this utility model, the nail rod includes a rod body, a neck break groove, a nail head, a locking groove, and a thread. The neck break groove is provided on the outer side of the upper end of the rod body, and the nail head is provided at the top of the rod body. Multiple locking grooves are provided in the part between the neck break groove and the nail head.

[0010] As a preferred embodiment of this utility model, the nail head includes a head body and a reinforcing ring, the head body is fixedly connected to the rod body, and the reinforcing ring is disposed on the outer side of the head body.

[0011] As a preferred embodiment of this utility model, the nail head has a bowl-shaped structure that is narrow at the top and wide at the bottom.

[0012] As a preferred embodiment of this utility model, the lower end of the rod is provided with threads, which extend from the middle of the rod to the bottom of the rod.

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

[0014] 1. The internal straight groove of the nail sleeve of this utility model has a hollow part, and multiple teeth are arranged in a ring inside the hollow part. The teeth adopt a biomimetic locking design and are shaped like shark teeth. When the nail head on the nail rod is inserted into the nail sleeve by a rivet gun and expands, the interlocking mechanism between the teeth and the nail head enhances the stress of the sleeve expansion and the strength of the interaction between the structure, optimizes the anti-loosening performance, and is suitable for high-frequency vibration scenarios.

[0015] 2. When this utility model is in use, the upper outer side of the rod body is provided with a locking groove and the nail head is provided with a reinforcing ring. When the rod body is pulled apart at the neck groove, the locking groove on the neck can squeeze and engage with the teeth in the nail sleeve. The reinforcing ring on the nail head further expands and reinforces the rod, thereby enhancing the connection strength of the broken neck rod in the nail sleeve and further improving the anti-loosening performance. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the present invention.

[0020] Figure 4 This is a partially enlarged cross-sectional view of the nail sleeve of this utility model.

[0021] In the diagram: 1. Nail rod; 101. Rod body; 102. Neck break groove; 103. Nail head; 1031. Head body; 1032. Reinforcing ring; 104. Locking groove; 105. Thread; 2. Nail sleeve; 201. Sleeve body; 202. Top plate; 203. Straight groove; 204. Hollow part; 205. Tooth; 206. Concave surface. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example

[0024] Please see Figure 1-4 The present invention provides the following technical solution: a high-strength rivet structure, comprising a rivet rod 1 and a rivet sleeve 2, wherein the rivet rod 1 is movably inserted into the rivet sleeve 2;

[0025] The nail sleeve 2 includes a sleeve body 201, a top piece 202, a straight groove 203, a hollow part 204, teeth 205, and a concave surface 206. The top of the sleeve body 201 has a concave surface 206, the bottom of the sleeve body 201 has a top piece 202, the inside of the sleeve body 201 has a straight groove 203, the upper end of the straight groove 203 has a hollow part 204, and the inner wall of the hollow part 204 has four sets of teeth 205 arranged in a ring.

[0026] The teeth 205 are triangular and shark tooth-like structures, and the annular teeth 205 at the same height are connected as a group on the inner wall of the hollow part 204.

[0027] With the multiple teeth 205 provided in the hollow part 204, when the nail head 103 is squeezed and pulled into the sleeve 201, the sleeve 201 expands and the multiple teeth 205 will bite and wrap around the nail head 103, which will enhance the connection strength between the nail head 103 and the sleeve 201 and improve the stability of the connection.

[0028] The nail rod 1 includes a rod body 101, a neck break groove 102, a nail head 103, a locking groove 104, and a thread 105. The neck break groove 102 is provided on the outer side of the upper end of the rod body 101, and the nail head 103 is provided at the top end of the rod body 101. Multiple locking grooves 104 are provided in the part between the neck break groove 102 and the nail head 103.

[0029] The nail head 103 includes a head body 1031 and a reinforcing ring 1032. The head body 1031 is fixedly connected to the rod body 101, and the reinforcing ring 1032 is disposed on the outer surface of the head body 1031.

[0030] The nail head 103 has a bowl-shaped structure that is narrow at the top and wide at the bottom.

[0031] Through the structural design of the nail head 103 and locking groove 104, the force-bearing contact surface can be expanded, the connection stability can be improved, and it is convenient to achieve a biting connection with the teeth 205 in the nail sleeve 2.

[0032] The lower end of the rod 101 is provided with a thread 105, which extends from the middle of the rod 101 to the bottom of the rod 101.

[0033] The thread 105 on the nail rod 1 ensures a stable connection between the rod 101 and the rivet gun, preventing it from easily coming loose.

[0034] The working principle and usage process of this utility model are as follows: In specific use, the rivet sleeve 2 and rivet rod 1 of the pull rivet are inserted into the riveting holes opened on the first and second connecting parts that need to be riveted. Then, the rivet rod 1 of the pull rivet is loaded into the pull rivet gun. By pulling the rivet rod 1, the rivet head 103 of the rivet rod 1 applies force to the rivet sleeve 2, causing the rivet head 103 at one end of the rod 101 to insert into the straight groove 203, causing the sleeve 201 to expand until the rod 101 is broken at the necking groove 102. At this time, the nail head 103 causes the sleeve 201 to expand laterally in a radial pattern within the straight groove 203, so that the sleeve 201 wraps around the nail head 103. At this time, the teeth 205 in the hollow part 204 will engage with the neck of the nail head 103 and the locking groove 104 opened in the neck. The reinforcing ring 1032 provided on the nail head 103 will also be squeezed and locked with the sleeve 201, thereby enhancing the stress of the expansion of the nail sleeve 2 and the interaction strength between the nail head 103, and optimizing the anti-loosening performance of the pull nail.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-strength rivet structure, characterized in that: It includes a nail rod (1) and a nail sleeve (2), wherein the nail rod (1) is movably inserted into the nail sleeve (2); The nail sleeve (2) includes a sleeve body (201), a top plate (202), a straight groove (203), a hollow part (204), teeth (205), and a concave surface (206). The top of the sleeve body (201) is provided with a concave surface (206), the bottom of the sleeve body (201) is provided with a top plate (202), the inside of the sleeve body (201) is provided with a straight groove (203), the upper end of the straight groove (203) is provided with a hollow part (204), and four sets of teeth (205) are arranged in a ring on the inner wall of the hollow part (204).

2. The high-strength rivet structure according to claim 1, characterized in that: The teeth (205) are triangular shark tooth-like structures, and the annular teeth (205) at the same height are connected as a group on the inner wall of the hollow part (204).

3. The high-strength rivet structure according to claim 1, characterized in that: The nail rod (1) includes a rod body (101), a neck groove (102), a nail head (103), a locking groove (104), and a thread (105). The neck groove (102) is provided on the outer side of the upper end of the rod body (101), and the nail head (103) is provided at the top end of the rod body (101). Multiple locking grooves (104) are provided in the neck between the neck groove (102) and the nail head (103).

4. The high-strength rivet structure according to claim 3, characterized in that: The nail head (103) includes a head body (1031) and a reinforcing ring (1032). The head body (1031) is fixedly connected to the rod body (101), and the reinforcing ring (1032) is disposed on the outer side of the head body (1031).

5. A high-strength rivet structure according to claim 3, characterized in that: The nail head (103) has a bowl-shaped structure that is narrow at the top and wide at the bottom.

6. A high-strength rivet structure according to claim 3, characterized in that: The lower end of the rod (101) is provided with a thread (105), which extends from the middle of the rod (101) to the bottom of the rod (101).

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