A core-pulling rivet

Abstract

The utility model discloses a kind of core-pulling rivets, including rivet, the rivet is divided into core-pulling and connecting piece, through-hole is opened in the connecting piece, one end of the core-pulling is detached from through-hole, detachable connection between the core-pulling and connecting piece, one end of the core-pulling is equipped with extrusion head, the diameter of the extrusion head is greater than through-hole, solve the traditional core-pulling rivet all using flat round head, and the contact area of the core-pulling rivet head with connecting piece using this kind of head is wide, which leads to the contact area of flat round head and connecting piece is large, and the more the contact area is, the more force needed is, which can cause flat round head to have not entered into connecting piece inside to have separated, leading to installation failure, so the fault tolerance of this kind of core-pulling rivet is relatively low.

Description

Technical Field

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

[0002] Blind rivets are commonly used single-sided fasteners in the industrial field. They are characterized by convenient installation and economical cost, and are widely used in the assembly and connection of box-type structural components such as distribution boxes, equipment enclosures, and containers. The rivet is made by pulling the rivet core with a special tool, causing the enlarged structure at the front end of the rivet core to be squeezed into the collar, forming an interference fit. At the same time, the collar undergoes plastic deformation under the compression of the enlarged structure and expands outward, eventually tightening tightly into the preset mounting hole, thereby achieving a reliable fastening connection.

[0003] Traditional blind rivets use flat, round heads. This type of blind rivet has a large contact area between the head and the connected parts. As a result, the larger the contact area, the greater the force required. This can cause the flat, round head to detach before it even enters the connected parts, leading to installation failure. Therefore, this type of blind rivet has a relatively low fault tolerance. Utility Model Content

[0004] This application provides a blind rivet that solves the problem of traditional flat-head blind rivets, which may lead to installation failure due to the flat head structure design, resulting in a low fault tolerance rate.

[0005] This application provides a blind rivet, comprising a rivet, the rivet being divided into a blind rivet and a connecting member, the connecting member having a through hole, one end of the blind rivet being inserted into the through hole, the blind rivet being detachably connected to the connecting member, and one end of the blind rivet being fitted with a pressing head, the diameter of the pressing head being larger than the through hole.

[0006] Furthermore, one end of the connector is an abutment end, and the other end of the connector is an expansion end, with an inclined surface provided on the expansion end.

[0007] Furthermore, the through hole is stepped, and the interior of the through hole is provided with several protrusions, which are located at the step.

[0008] Furthermore, the extrusion head is fixedly connected to the core puller, and a groove is provided at the connection between the extrusion head and the core puller.

[0009] Furthermore, the extrusion head is divided into a support part and an extrusion part. The extrusion part includes a connecting rod and a cutting rib, and the cutting rib is fixedly connected to the connecting rod.

[0010] Furthermore, a slot is provided on the core puller, and a locking block is fixedly connected inside the through hole, the locking block cooperating with the slot.

[0011] In summary, the beneficial effects of the blind rivet in this application are: by setting a pressing head with a diameter larger than the through hole, and cooperating with the inclined surface of the expansion end of the connector, the insertion direction of the blind rivet can be effectively guided during installation, which greatly reduces the risk of installation detachment caused by the contact area of ​​the head, significantly improves the fault tolerance rate of the installation process, and makes the installation operation simpler and the success rate higher. Attached Figure Description

[0012] Figure 1 A perspective view of the utility model;

[0013] Figure 2 This is a side sectional view of the utility model;

[0014] Figure 3 This is a schematic diagram of the extrusion head structure of the utility model;

[0015] Figure 4 This is a structural schematic diagram of the connector of the utility model;

[0016] Figure 5 for Figure 2 A magnified view of a portion of point A in the middle.

[0017] Reference numerals: 1. Rivet; 2. Pull-out core; 3. Connector; 4. Through hole; 5. Extrusion head; 6. Expansion end; 7. Abutment end; 8. Protrusion; 9. Groove; 10. Support part; 11. Extrusion part; 12. Connecting rod; 13. Cutting rib; 14. Slot; 15. Block. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 5As shown, a blind rivet includes a rivet 1, which is divided into a blind rivet 2 and a connector 3. A through hole 4 is provided at the center of the connector 3, and a plurality of slots 14 are provided inside the through hole 4. A number of locking blocks 15 corresponding to the number of slots 14 are fixedly connected to the blind rivet 2, and the locking blocks 15 cooperate with the slots 14. One end of the blind rivet 2 is inserted into the through hole 4 and passes through the entire through hole 4 until the locking blocks 15 on the blind rivet 2 are engaged in the slots 14. At this time, the blind rivet 2 is restricted to the connector 3. At the same time, the blind rivet 2 can be pulled in the opposite direction to separate the connector 3 and the blind rivet 2, or it can be separated in the forward direction by using an installation tool during installation, thereby realizing a detachable connection between the connector 3 and the blind rivet 2.

[0020] Furthermore, one end of the connector 3 is an abutment end 7, which is used to abut against the parts that need to be fixed. The other end of the connector 3 is an expansion end 6. A pressing head 5 is fixedly connected to one end of the core puller 2. The pressing head 5 is located on the side of the expansion end 6 of the connector 3. The pressing head 5 is divided into a support part 10 and a pressing part 11. The pressing part 11 includes a connecting rod 12 and cutting ribs 13. One end of the connecting rod 12 is fixedly connected to the core puller 2, and the other end of the connecting rod 12 is fixedly connected to the pressing part 11. Several cutting ribs 13 are fixedly connected around the connecting rod 12. The outer side is blade-shaped, and an inclined surface is provided on the expansion end 6 of the connector 3. By pulling the end of the core puller 2 that is not squeezed by the head 5 with an auxiliary tool, the cutting rib 13 on the head 5 is squeezed by the pulling force, which squeezes the expansion end 6 of the connector 3, thereby causing the outer ring of the connector 3 to bulge. At the same time, the diameter of the through hole 4 is smaller than the diameter of the support part 10, so as to ensure that the outer ring of the connector 3 can bulge and play a fixing role. The blade-shaped cutting rib 13 and the inclined surface on the expansion end 6 cooperate to minimize the squeezing resistance, assist in uniform deformation, and prevent the expansion end 6 from cracking.

[0021] Furthermore, the through hole 4 in the connector 3 is stepped, and several protrusions 8 are provided in the connector 3. The number of protrusions 8 corresponds to the number of cutting ribs 13, and the protrusions 8 and cutting ribs 13 are staggered. A groove 9 is provided at the connection between the extrusion head 5 and the core puller 2. The groove 9 of the extrusion head 5 is specifically located at the connection between the connecting rod 12 and the core puller 2. When the extrusion head 5 extrudes and deforms the connector 3, it will still move in the direction of the force applied by the core puller 2. When the extrusion head 5 is limited by the protrusions 8, it can ensure that the extrusion head 5 can quickly detach from the core puller 2. At the same time, the groove 9 can also play an auxiliary role in detachment.

Claims

1. A self-plugging rivet, characterized by, The rivet (1) is divided into a core (2) and a connecting piece (3), a through hole (4) is formed in the connecting piece (3), one end of the core (2) is detached from the through hole (4), the core (2) is detachably connected with the connecting piece (3), and an extrusion head (5) is arranged at one end of the core (2).

2. A self-plugging rivet according to claim 1, wherein One end of the connecting piece (3) is an abutting end (7), the other end of the connecting piece (3) is an expansion end (6), and an inclined surface is arranged on the expansion end (6).

3. A self-plugging rivet according to claim 2, wherein The through hole (4) is in a stepped shape, and a plurality of protrusions (8) are arranged in the through hole (4).

4. A self-plugging rivet as defined in claim 1, wherein The extrusion head (5) is fixedly connected with the core (2), and a groove (9) is formed at the connection between the extrusion head (5) and the core (2).

5. A self-plugging rivet according to claim 4, wherein The extrusion head (5) is divided into a supporting part (10) and an extrusion part (11), the extrusion part (11) comprises a connecting rod (12) and a cutting rib (13), and the cutting rib (13) is fixedly connected with the connecting rod (12).

6. A self-plugging rivet as defined in claim 1, wherein A clamping groove (14) is formed in the core (2), and a clamping block (15) is fixedly connected in the through hole (4), and the clamping block (15) is matched with the clamping groove (14).

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