A core-pulling rivet

Abstract

The utility model discloses a core pulling rivet, including the nail cover, the one side of nail cover is provided with the nail head, the other side of nail cover is provided with the core pulling, the inside of nail cover is provided with a step hole, the step hole is divided into first channel hole and second channel hole, the diameter of first channel hole is greater than second channel hole, the junction of first channel hole and second channel hole forms the step surface, the one side of nail head is provided with one end and is provided with the protrusion, the protrusion is located in first channel hole, one end of core pulling is connected with the protrusion, solved the traditional core pulling rivet in the production process and cannot guarantee that every size is same, so some core pulling rivet core pulling can appear the condition that cannot be separated with the nail head fracture, this makes the nail head can be directly extracted, although this can also temporarily fixed, but cannot long -term use, this needs to take out the nail cover and throw away, this is more energy -consuming and waste time problem.

Description

Technical Field

[0001] This utility model relates to the field of blind rivet technology, and in particular to a blind rivet. Background Technology

[0002] Blind rivets are high-performance, high-efficiency connectors with significant core advantages. They are lightweight, effectively reducing the overall structural load; they offer strong connection reliability, reducing the risk of loosening and ensuring long-term stability; they have high mechanical strength, adapting to various load-bearing scenarios; they are easy and efficient to install, requiring no complex tools and significantly saving assembly time; and they have wide applicability, being widely used in industries, construction, and home appliances, helping to improve production and assembly efficiency.

[0003] However, traditional blind rivets cannot guarantee that every size is the same during the production process. Therefore, in some blind rivets, the blind core may not be able to break off from the rivet head, which will cause the rivet head to be pulled out directly. Although this can temporarily fix it, it cannot be used for a long time. This requires removing the waste rivet sleeve, which is quite laborious and time-consuming. Utility Model Content

[0004] This application provides a blind rivet that solves the problem that traditional blind rivets cannot guarantee that each blind rivet is exactly the same size due to manufacturing process issues. This can lead to situations where the blind rivet cannot be separated from the rivet after the blind rivet is pulled out, making it difficult to remove the rivet sleeve and wasting a lot of effort and time.

[0005] This application provides a blind rivet, including a rivet sleeve, a rivet head on one side of the rivet sleeve, and a blind rivet on the other side of the rivet sleeve. The rivet sleeve has a stepped hole inside, which is divided into a first channel hole and a second channel hole. The diameter of the first channel hole is larger than that of the second channel hole. A stepped surface is formed at the junction of the first channel hole and the second channel hole. One end of the rivet head is provided with a protrusion, which is located inside the first channel hole. One end of the blind rivet is connected to the protrusion.

[0006] Furthermore, the protrusion is frustum-shaped, and a groove is provided on the first channel hole, with the protrusion fitting into the groove.

[0007] Furthermore, a locking block is fixedly connected to the protrusion, and a sliding groove that cooperates with the locking block is opened in the first channel hole. The sliding groove is divided into a straight section and a rotating section.

[0008] Furthermore, a limiting groove is formed in the second channel hole, and a limiting block that cooperates with the limiting groove is fixedly connected to the core puller.

[0009] Furthermore, the core puller has a chamfer.

[0010] Furthermore, the core puller is provided with several friction patterns.

[0011] In summary, the beneficial effect of the blind rivet in this application is that, through the cooperation of the stepped hole and the frustum-shaped protrusion, the protrusion accurately positions the connection position between the blind rivet and the rivet head in the first channel hole. During the pulling of the blind rivet, the rivet head first unfolds and fixes the rivet sleeve. As the blind rivet is pulled continuously, after the protrusion and the stepped surface are pressed together, the rivet sleeve is directly limited on the stepped surface. At this time, continuing to pull the blind rivet can ensure that the blind rivet and the protrusion are separated. Attached Figure Description

[0012] Figure 1 A perspective view of the utility model; Figure 2 This is a side sectional view of the utility model; Figure 3 This is a schematic diagram of the nail sleeve structure of the utility model; Figure 4 This is a schematic diagram of the nail head structure of the utility model; Figure 5 This is an exploded view of part of the structure of the utility model.

[0013] Reference numerals: 1. Nail sleeve; 2. Nail head; 3. Core puller; 4. Stepped hole; 5. First channel hole; 6. Second channel hole; 7. Stepped surface; 8. Protrusion; 9. Groove; 10. Locking block; 11. Slide groove; 111. Straight section; 112. Rotating section; 12. Limiting groove; 13. Limiting block; 14. Chamfer; 15. Friction texture. Detailed Implementation

[0014] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0015] like Figures 1 to 5As shown, a blind rivet includes a rivet sleeve 1. A stepped hole 4 is formed inside the rivet sleeve 1. The stepped hole 4 is divided into a first channel hole 5 and a second channel hole 6, with the diameter of the first channel hole 5 being larger than the diameter of the second channel hole 6. One end of the first channel hole 5 penetrates one end face of the rivet sleeve 1, and one end of the second channel hole 6 penetrates the other end face of the rivet sleeve 1. The other ends of the first channel hole 5 and the second channel hole 6 are connected, thus forming a stepped surface 7 at the boundary of the two channel holes for positioning. A protrusion 8 is fixedly connected to one side of the rivet sleeve 1, located inside the first channel hole 5. The protrusion 8 is generally frustum-shaped, and a groove 9 is formed on the first channel hole 5. The protrusion 8 and the groove 9 are connected... The groove 9 fits in place, and a pull core 3 is provided on the other side of the nail sleeve 1. One end of the pull core 3 is inserted into the first channel hole 5 through the second channel hole 6 and is fixedly connected to the small end face of the protrusion 8. A chamfer 14 is provided on the end of the pull core 3 that is fixedly connected to the protrusion 8. The chamfer 14 can reduce the contact area between the pull core 3 and the protrusion 8, making it easier for the pull core 3 to break off from the protrusion 8. Pulling the pull core 3 causes the nail head 2 to move downward under the action of the pull core 3. Since the protrusion 8 is frustum-shaped and fits with the groove 9, the nail head 2 can more easily squeeze the nail sleeve 1, causing the nail sleeve 1 to be squeezed and deformed. Then the nail sleeve 1 will abut against the step surface 7. The step surface 7 restricts the nail sleeve 1, so that the nail head 2 is directly restricted on the step surface 7.

[0016] Furthermore, several locking blocks 10 are fixedly connected to the protrusion 8. The locking blocks 10 are arranged in a ring, and the bottom surface of the locking blocks 10 is on the same plane as the bottom surface of the protrusion 8. A sliding groove 11 corresponding to the number of locking blocks 10 is opened in the first channel hole 5. The sliding groove 11 is divided into a straight section 111 and a rotating section 112. Several limiting grooves 12 are opened in the second channel hole 6. Limiting blocks 13 corresponding to the number of limiting grooves 12 are fixedly connected to the core puller 3. When the core puller 3 is pulled, As the nail sleeve 1 moves downward, the locking block 10 on the protrusion 8 enters the straight section 111 of the slide groove 11. When part of the nail head 2 opens the nail sleeve 1, the locking block 10 will enter the rotating section 112. At this time, the protrusion 8 will drive the nail head 2 to rotate along the rotating section 112, while the core puller 3 is restricted from rotating under the action of the limiting block 13 and the limiting groove 12. This will create a torque between the connection between the protrusion 8 and the core puller 3, thereby assisting the core puller 3 and the protrusion 8 to break.

[0017] Furthermore, the core puller 3 is provided with several friction patterns 15, which can increase friction and make the core puller 3 easier to pull.

Claims

1. A blind rivet, characterized in that, The device includes a nail sleeve (1), a nail head (2) on one side of the nail sleeve (1), and a core puller (3) on the other side of the nail sleeve (1). The nail sleeve (1) has a stepped hole (4) inside, which is divided into a first channel hole (5) and a second channel hole (6). The diameter of the first channel hole (5) is larger than that of the second channel hole (6). A stepped surface (7) is formed at the junction of the first channel hole (5) and the second channel hole (6). One end of the nail head (2) has a protrusion (8) located inside the first channel hole (5). One end of the core puller (3) is connected to the protrusion (8).

2. The blind rivet according to claim 1, characterized in that, The protrusion (8) is frustum-shaped, and a groove (9) is provided on the first channel hole (5), and the protrusion (8) fits into the groove (9).

3. A blind rivet according to claim 2, characterized in that, A locking block (10) is fixedly connected to the protrusion (8), and a sliding groove (11) that cooperates with the locking block (10) is provided in the first channel hole (5). The sliding groove (11) is divided into a straight section (111) and a rotating section (112).

4. A blind rivet according to claim 3, characterized in that, A limiting groove (12) is provided in the second channel hole (6), and a limiting block (13) that cooperates with the limiting groove (12) is fixedly connected to the core puller (3).

5. A blind rivet according to claim 4, characterized in that, The core puller (3) has a chamfer (14).

6. A blind rivet according to claim 5, characterized in that, The core puller (3) is provided with several friction patterns (15).

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