Rivet capable of preventing rivet head from loosening during pulling

Abstract

The utility model discloses an anti-pulling rivet head loose rivet which comprises a sleeve, the inner surface of the sleeve is provided with thread teeth, the outer surface of the thread teeth is in threaded connection with a bolt, the left side and the right side in the sleeve are each provided with two matching grooves, and the interiors of the two matching grooves are communicated with the inner surface and the outer surface of the sleeve. A protruding block and a limiting block are arranged on the inner surface and the outer surface of the matching groove correspondingly, the protruding block and the limiting block are fixedly connected with the inner surface and the outer surface of the sleeve correspondingly, a groove is formed in the bolt, and the interior of the groove communicates with the outer surface of the bolt. The protruding block of the matching groove in the sleeve is tightly connected with the groove in the bolt in a clamped mode, and strong anti-pulling support is provided for the whole structure. When the bolt is subjected to pulling force, the bolt can be effectively prevented from being directly pulled out of the sleeve through the limiting effect of the protruding block in the groove, and the limiting block arranged on the inner surface and the outer surface of the groove is matched with the unique structure that the limiting block is gradually enlarged away from the upper surface of the sleeve, and the key auxiliary effect is achieved in the anti-pulling process.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet technical field, especially a kind of anti-pulling rivet head loose rivet. BACKGROUND

[0002] In many fields such as mechanical manufacturing, construction engineering, automobile industry, reliable connection technology has been the key factor to ensure product quality and structural safety. Although the traditional rivet connection mode meets the conventional connection demand to some extent, with the continuous improvement of the requirement of connection stability and durability of industrial development, its limitations gradually highlight.

[0003] When the rivet head loose rivet is easily pulled out, the stability of the connection part is greatly discounted, and in mechanical devices, the parts originally closely connected by rivets will have relative displacement due to the loosening and pulling out of the rivets. SUMMARY

[0004] The utility model aims at providing a kind of anti-pulling rivet head loose rivet, the tight clamping of the protruding block of sleeve inner cooperation groove and the recess of bolt inside provides strong anti-pulling support for overall structure. When subjected to pulling force, the limiting effect of protruding block in recess can effectively prevent bolt from being pulled out directly from sleeve, and the unique structure of limiting block away from the gradually increasing upper surface of sleeve plays a key auxiliary role in the anti-pulling process.

[0005] To achieve the above object, provide a kind of anti-pulling rivet head loose rivet, including: sleeve, the inner surface of the sleeve is provided with thread tooth, the outer surface of the thread tooth is threadedly connected with bolt, the inside of sleeve is opened with two cooperation grooves on left and right sides, the inside of two cooperation grooves is communicated with the inner and outer surfaces of sleeve, the inner and outer surfaces of cooperation groove are respectively provided with protruding block and limiting block, and protruding block and limiting block are all fixedly connected with the inner and outer surfaces of sleeve, the inside of bolt is opened with recess, and the inside of recess is communicated with the outer surface of bolt. Recess cooperates with protruding block accurately, provides key support for anti-pulling, improves overall pullout resistance.

[0006] According to the anti-pulling rivet head loose rivet, the protruding block is located in the inside of recess, and the size of protruding block matches the size of recess. The two are tightly clamped, limit the displacement of bolt relative to sleeve, and significantly improve the connection reliability.

[0007] According to the anti-pulling rivet head loose rivet, the section of cooperation groove is U-shaped, and the opening of cooperation groove faces the upper surface of bolt. U-shaped opening facilitates the butt joint of protruding block and recess, optimizes the installation process, and improves the connection efficiency.

[0008] According to the aforementioned anti-pull rivet head loosening rivet, the upper surface of the limiting block gradually increases in size away from the sleeve, and the limiting block and the mating groove are arranged parallel to each other. The unique structure of the limiting block can better prevent the bolt from coming out and enhance the anti-pull effect.

[0009] According to the aforementioned anti-pull rivet head loosening rivet, the protrusion structure is the same as the limiting block, and the protrusion and the groove are internally engaged. The protrusion and the limiting block work together to comprehensively improve the tensile strength and stability of the connection part.

[0010] According to the aforementioned anti-pull rivet head loosening rivet, the number of mating grooves is two, and each mating groove is provided with a protrusion and a limiting block. Multiple mating points distribute the force, greatly enhancing the overall anti-pull performance and durability of the rivet.

[0011] The above-mentioned solution has the following beneficial effects:

[0012] This invention features a mating groove, a protrusion, a recess, and a limiting block. The tight engagement between the protrusion in the mating groove inside the sleeve and the recess inside the bolt provides strong tensile support for the overall structure. When subjected to tensile force, the limiting action of the protrusion within the recess effectively prevents the bolt from being pulled directly out of the sleeve. The limiting block, located on the inner and outer surfaces of the mating groove, with its unique structure that gradually increases in size away from the upper surface of the sleeve, plays a crucial auxiliary role in preventing tensile stress.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a perspective view of an anti-pull rivet head loosening rivet according to the present invention;

[0016] Figure 2 This is a front view of an anti-pull rivet head loosening rivet according to the present invention;

[0017] Figure 3 This is a cross-sectional perspective view of an anti-pull rivet head loosening rivet according to the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0019] Legend:

[0020] 1. Sleeve; 2. Bolt; 3. Mating groove; 4. Groove; 5. Protrusion; 6. Limiting block; 7. Threaded teeth. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figures 1-4 This utility model provides an anti-pull rivet head loosening rivet, comprising: a sleeve 1, the inner surface of which is provided with threaded teeth 7, and the outer surface of the threaded teeth 7 is threadedly connected to a bolt 2. Through the threaded connection, the bolt 2 can be screwed in or out relative to the sleeve 1, thereby adjusting the connection state of the overall structure. Two mating grooves 3 are provided on both the left and right sides inside the sleeve 1. The interior of the two mating grooves 3 is connected to the inner and outer surfaces of the sleeve 1. The mating grooves 3 provide a space for the subsequent installation of protrusions 5 and limiting blocks 6, and their design of connecting the inner and outer surfaces facilitates connection and cooperation with other components. The inner and outer surfaces of the mating grooves 3 are respectively provided with protrusions 5 and limiting blocks 6, and the protrusions 5 and limiting blocks 6 are fixedly connected to the inner and outer surfaces of the sleeve 1. The protrusions 5 and limiting blocks 6 play a role in positioning and restricting other components, ensuring the stability and functionality of the overall structure. The bolt 2 has a groove 4 inside, and the interior of the groove 4 is connected to the outer surface of the bolt 2. The groove 4 is used to cooperate with the protrusions 5 to realize the positioning and relative movement restriction of the bolt 2 and the sleeve 1 in a specific direction.

[0023] The protrusion 5 is located inside the groove 4. The size of the protrusion 5 matches the size of the groove 4, ensuring a tight fit and making the movement of the bolt 2 within the sleeve 1 more precise and stable, preventing shaking or displacement. The cross-section of the mating groove 3 is U-shaped, with the opening of the mating groove 3 facing the upper surface of the bolt 2. The U-shaped design facilitates the installation and disassembly of related components, and the opening facing the upper surface of the bolt 2 facilitates the docking of the protrusion 5 and the groove 4 and subsequent mating work. The limiting block 6 gradually increases in size away from the upper surface of the sleeve 1. The limiting block 6 is set parallel to the mating groove 3. This gradually increasing structure of the limiting block 6 and... The parallel arrangement can prevent other components from coming out from a specific direction to a certain extent, thus playing a more effective limiting role. The structure of the protrusion 5 is the same as that of the limiting block 6. The protrusion 5 and the groove 4 are internally engaged. The engagement method further enhances the firmness of the connection between the bolt 2 and the sleeve 1, ensuring that the two will not easily separate during operation. There are two mating grooves 3, and each mating groove 3 is provided with a protrusion 5 and a limiting block 6. The two mating grooves 3 and the corresponding protrusions 5 and limiting blocks 6 can reinforce and position the connection between the bolt 2 and the sleeve 1 from multiple positions, improving the reliability of the overall structure.

[0024] Working Principle: First, place the sleeve 1 horizontally on a stable workbench. Hold the sleeve 1 firmly with one hand and pick up the bolt 2 with the other, aligning the threaded end of the bolt 2 vertically with the thread teeth 7 on the inner surface of the sleeve 1. Begin slowly screwing the bolt 2 clockwise. During the screwing process, keep the axis of the bolt 2 aligned with the axis of the sleeve 1 to avoid tilting, which may damage the threads or prevent the protrusion 5 from accurately aligning with the groove 4. While screwing the bolt 2 in, pay attention to the position of the mating groove 3 on the sleeve 1, estimating the moment when the protrusion 5 and groove 4 are about to align. As the bolt 2 continues to screw into the sleeve 1, closely monitor the relative position of the protrusion 5 and the groove 4 within the mating groove 3. When the protrusion 5 gradually approaches the groove 4, the screwing speed should be further slowed down. When the protrusion 5 and groove 4 are precisely aligned, due to their size... When the sizes match, a noticeable locking sensation will be produced. At this point, gently rotating bolt 2 will reveal that its rotation in a specific direction is restricted, indicating that bolt 2 and sleeve 1 have achieved initial positioning. After the protrusion 5 and groove 4 are successfully aligned, continue to screw bolt 2 clockwise. Using appropriate tools, such as a wrench, tighten bolt 2 to the specified torque value according to actual usage requirements. Different usage scenarios have different requirements for the tightness, so it is essential to strictly follow the standard operation. The U-shaped cross-section of groove 3 with the opening facing upwards makes it easier for protrusion 5 to engage with groove 4. During the tightening of bolt 2, the limiting blocks 6 set on the inner and outer surfaces of groove 3, due to their gradually increasing structural characteristics away from the upper surface of sleeve 1, can effectively prevent bolt 2 from accidentally coming out of sleeve 1, further enhancing the stability of the overall structure.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A type of anti-pull rivet head loosening rivet, comprising: A sleeve (1) has a threaded tooth (7) on its inner surface and a bolt (2) threadedly connected to the outer surface of the threaded tooth (7). The sleeve (1) has two mating grooves (3) on both the left and right sides inside. The interior of the two mating grooves (3) is connected to the inner and outer surfaces of the sleeve (1). The inner and outer surfaces of the mating grooves (3) are respectively provided with a protrusion (5) and a limiting block (6), and the protrusion (5) and the limiting block (6) are fixedly connected to the inner and outer surfaces of the sleeve (1). The bolt (2) has a groove (4) inside, and the interior of the groove (4) is connected to the outer surface of the bolt (2).

2. The anti-pull rivet head loosening rivet according to claim 1, characterized in that: The protrusion (5) is located inside the groove (4), and the size of the protrusion (5) matches the size of the groove (4).

3. The anti-pull rivet head loosening rivet according to claim 1, characterized in that: The cross-section of the mating groove (3) is U-shaped, and the opening of the mating groove (3) faces the upper surface of the bolt (2).

4. The anti-pull rivet head loosening rivet according to claim 1, characterized in that: The upper surface of the limiting block (6) gets larger and larger away from the sleeve (1), and the limiting block (6) and the mating groove (3) are arranged in parallel.

5. The anti-pull rivet head loosening rivet according to claim 1, characterized in that: The structure of the protrusion (5) is the same as that of the limiting block (6), and the protrusion (5) and the groove (4) are internally engaged.

6. The anti-pull rivet head loosening rivet according to claim 1, characterized in that: The number of the mating grooves (3) is two, and each of the mating grooves (3) is provided with a protrusion (5) and a limiting block (6).

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