Toothed self-plugging rivet

Abstract

The utility model discloses a toothed self-plugging rivet, which relates to the technical field of self-plugging rivets and particularly comprises a rivet core, an annular groove is arranged on the outer wall of the rivet core, one end of the rivet core is fixedly connected with a rivet head, the outer wall of the rivet core is sleeved with an expansion component, and a locking component is attached to the outer wall of the expansion component in a surrounding manner. A fastened connecting piece is fixed on an installation plane through the rubber sleeve and the rubber ring, the installation position is prevented from loosening after installation, the anti-shock effect can be improved through the rivet end cap and the shock pad, the self-plugging rivet is prevented from vibrating along with vibration of a riveted piece, and therefore the riveting strength is improved, the fixing effect is improved, the ring groove and the expansion ring are extruded through the rivet head, and the service life of the self-plugging rivet is prolonged. The attaching ring is extruded through the expansion ring, so that the top ball is extruded out, the expansion ring and the riveting plane are extruded and fixed through the top ball, the installation position is prevented from loosening after installation, and the riveting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blind rivets, in particular to a toothed blind rivet. Background Art

[0002] Blind rivets are a type of rivet used for single-sided riveting, but they must be riveted using a special tool - a rivet gun (manual, electric, or pneumatic). During riveting, the rivet core is pulled by a special rivet gun to expand the rivet body and play a riveting role. This type of rivet is particularly suitable for riveting occasions where it is inconvenient to use ordinary rivets (which must be riveted from both sides), so it is widely used in construction, automobiles, ships, aircraft, machinery, electrical appliances, furniture and other products. Among them, open-type flat round head blind rivets are the most widely used, countersunk head blind rivets are suitable for riveting occasions that require smooth surfaces, and closed-type blind rivets are suitable for riveting occasions that require higher loads and certain sealing properties.

[0003] After searching, the Chinese patent with the publication number of CN213744380U is disclosed, and its technical points are: a toothed core-pulling rivet, belonging to the field of rivets, and its technical scheme includes an upper pressure block, an expansion tube and a core column, the expansion tube is welded to the bottom outer wall of the upper pressure block, the core column is inserted into the expansion tube, the circumferential outer wall of the core column is provided with two annular limit grooves, the outer walls of both sides of the expansion tube are provided with openings, and the inner walls of the two openings are plugged with arc-shaped limit blocks, and the outer walls of the two limit blocks away from each other are bonded with arc-shaped rubber protrusions. The utility model is provided with a tooth block at the circumferential bottom of the core column. When the rubber protrusion fails to squeeze the limit block into the two limit grooves, the limit block can limit the tooth block, thereby further ensuring the fracture of the core column and ensuring stable core pulling. By providing a table-shaped nail head, the nail head can be used as the last limit guarantee to ensure the fracture of the core column and ensure stable core pulling.

[0004] The above scheme solves the problem of the breakage of the core column of the existing blind rivet and ensures stable core pulling. By providing a table-shaped nail head, the nail head can be used as the last limit guarantee to ensure the breakage of the core column and the problem of stable core pulling. However, in most of the existing blind rivets, a rivet hole is preset on the fixing part, and then an expansion tube is inserted, and then a core pulling gun is used to perform the core pulling operation, so that the entire core column is pulled out and the nail head remains in the expansion tube. After installation, the rivet can still rotate in the plane of the fixed object, which can easily cause the rivet to loosen, and it is easy to cause loosening and falling off after long-term use.

[0005] Therefore, a new solution is needed to solve this problem Utility Model Content

[0006] In view of the above background technology, the existing existing core-pulling rivets mostly have rivet holes preset on the fixing parts, and then the expansion tube is inserted, and then the core-pulling operation is performed using a core-pulling gun, so that the entire core column is pulled out, and the rivet head remains in the expansion tube. After installation, the rivet can still rotate in the plane of the fixed object, which can easily cause the rivet to loosen, and it is easy to cause loosening and falling off after long-term use.

[0007] The utility model discloses a toothed blind rivet, comprising a nail core, an annular groove is formed on the outer wall of the nail core, one end of the nail core is fixedly connected with the nail head, the outer wall of the nail core is sleeved with an expansion component, and a locking component is fitted around the outer wall of the expansion component.

[0008] Furthermore, the annular groove is provided at the upper end of the nail core, and the annular groove is concave.

[0009] Furthermore, a rubber pad is attached to the inner wall of the nail head, and the inner wall of the nail head is tapered.

[0010] Furthermore, the expansion assembly includes an expansion tube, the inner wall of the expansion tube is provided with a through hole, the inner wall of the through hole is fitted with a rubber sleeve, a rubber ring is fixedly fitted around the left end of the expansion tube, a ring groove is provided on the left outer wall of the expansion tube, the left end of the expansion tube is fixedly connected to the rivet end cap, a shock-absorbing pad is fitted on the lower surface of the rivet end cap, and the expansion tube is connected to the rivet core through the through hole.

[0011] Furthermore, the lower end of the expansion tube is fitted with the nail head through a rubber ring, the rubber sleeve and the rubber ring are specifically made of rubber material, and the shock-absorbing pad is specifically made of silicone material.

[0012] Furthermore, the locking assembly includes an expansion ring, an inner wall of the expansion ring is fitted with a fitting ring, and an inner wall of the fitting ring is fitted with a top ball.

[0013] Furthermore, the expansion ring is fixedly fitted with the ring groove through a fitting ring, the fitting ring is specifically made of aluminum, the number of the top balls is 6-8 groups, and the top balls are embedded in the inner wall of the expansion ring through the fitting ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model arranges the nail core, expansion tube, rubber sleeve, rubber ring, rivet end cap and shock-absorbing pad. The expansion tube is squeezed by the nail head, and the fastened connection piece is fixed on the installation plane by the rubber sleeve and the rubber ring to prevent the installation position from loosening after installation. The rivet end cap and the shock-absorbing pad can improve the seismic effect, and prevent the blind rivet from vibrating with the vibration of the riveted part, thereby improving the riveting strength and the fixing effect.

[0016] 2. The utility model is provided with a nail head, a ring groove, an expansion ring, a fitting ring, and a top ball. The nail head is used to extrude the ring groove and the expansion ring, the fitting ring is extruded by the expansion ring to extrude the top ball, and the expansion ring and the riveting plane are extruded and fixed by the top ball to prevent the installation position from loosening after installation and improve the riveting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the expansion assembly structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure after riveting in this utility model.

[0022] In the figure: 1, nail core; 2, annular groove; 3, nail head; 4, expansion assembly; 41, expansion tube; 42, perforation; 43, rubber sleeve; 44, rubber ring; 45, ring groove; 46, rivet end cap; 47, shock-absorbing pad; 5, locking assembly; 51, expansion ring; 52, fitting ring; 53, top ball. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0024] See also Figure 1-4 The utility model discloses a toothed blind rivet, comprising a nail core 1, an annular groove 2 is provided on the outer wall of the nail core 1, one end of the nail core 1 is fixedly connected with a nail head 3, the outer wall of the nail core 1 is sleeved with an expansion component 4, a locking component 5 is fitted around the outer wall of the expansion component 4, the annular groove 2 is provided at the upper end of the nail core 1, and the annular groove 2 is concave, a rubber pad is fitted on the inner wall of the nail head 3, and the inner wall of the nail head 3 is tapered, thereby improving the riveting effect.

[0025] The expansion assembly 4 includes an expansion tube 41, the inner wall of the expansion tube 41 is provided with a through hole 42, the inner wall of the through hole 42 is fitted with a rubber sleeve 43, the left end of the expansion tube 41 is fixedly fitted with a rubber ring 44, the left outer wall of the expansion tube 41 is provided with a ring groove 45, the left end of the expansion tube 41 is fixedly connected to the rivet end cap, the lower surface of the rivet end cap is fitted with a shock-absorbing pad 47, the expansion tube 41 is connected to the nail core 1 through the through hole 42, the lower end of the expansion tube 41 is fitted with the nail head 3 through the rubber ring 44, the rubber sleeve 43 and the rubber ring 44 are specifically made of rubber material, and the shock-absorbing pad 47 is specifically made of silicone material to improve the seismic effect, avoid external vibration from causing riveting looseness, and improve the stability of the rivet.

[0026] The locking assembly 5 includes an expansion ring 51, a fitting ring 52 is fitted on the inner wall of the expansion ring 51, and a top ball 53 is fitted on the inner wall of the fitting ring 52. The expansion ring 51 is fixedly fitted to the ring groove 45 through the fitting ring 52. The fitting ring 52 is specifically made of aluminum. The number of the top balls 53 is 6-8 groups, and the top balls 53 are embedded in the inner wall of the expansion ring 51 through the fitting ring 52 to improve the fastening of the riveted parts.

[0027] When using the utility model: the expansion tube is squeezed by the nail core 1 and the nail head 3, and the fastened connection piece is fixed on the installation plane by the rubber sleeve 43 and the rubber ring 44 to prevent the installation position from loosening after installation, and the anti-seismic effect can be improved by the rivet end cap 46 and the shock-absorbing pad 47 to prevent the blind rivet from vibrating with the vibration of the riveted part, thereby improving the riveting strength and the fixing effect, and the expansion ring 51 is squeezed by the ring groove 45, and the fitting ring 52 is squeezed by the expansion ring 51 to squeeze out the top ball 53, and the expansion ring 51 and the riveting plane are squeezed and fixed by the top ball 53 to prevent the installation position from loosening after installation and improve the riveting efficiency.

[0028] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A toothed blind rivet, comprising a mandrel (1), characterized in that: The outer wall of the nail core (1) is provided with an annular groove (2), one end of the nail core (1) is fixedly connected to the nail head (3), the outer wall of the nail core (1) is sleeved with the expansion component (4), and the outer wall of the expansion component (4) is surrounded and fitted with a locking component (5).

2. A toothed blind rivet according to claim 1, characterized in that: The annular groove (2) is arranged at the upper end of the nail core (1), and the annular groove (2) is concave.

3. The toothed blind rivet according to claim 1, characterized in that: A rubber pad is attached to the inner wall of the nail head (3), and the inner wall of the nail head (3) is tapered.

4. The toothed blind rivet according to claim 1, characterized in that: The expansion assembly (4) comprises an expansion tube (41), the inner wall of the expansion tube (41) is provided with a through hole (42), the inner wall of the through hole (42) is fitted with a rubber sleeve (43), the left end of the expansion tube (41) is fixedly fitted with a rubber ring (44), the left outer wall of the expansion tube (41) is provided with a ring groove (45), the left end of the expansion tube (41) is fixedly connected to the rivet end cap, the lower surface of the rivet end cap is fitted with a shock-absorbing pad (47), and the expansion tube (41) is connected to the rivet core (1) through the through hole (42).

5. A toothed blind rivet according to claim 4, characterized in that: The lower end of the expansion tube (41) is fitted to the nail head (3) via a rubber ring (44); the rubber sleeve (43) and the rubber ring (44) are specifically made of rubber material; and the shock-absorbing pad (47) is specifically made of silica gel material.

6. The toothed blind rivet according to claim 1, characterized in that: The locking assembly (5) comprises an expansion ring (51), the inner wall of the expansion ring (51) is fitted with a fitting ring (52), and the inner wall of the fitting ring (52) is fitted with a top ball (53).

7. A toothed blind rivet according to claim 6, characterized in that: The expansion ring (51) is fixedly fitted with the ring groove (45) via a fitting ring (52), the fitting ring (52) is specifically made of aluminum, the number of the top balls (53) is 6-8 groups, and the top balls (53) are embedded in the inner wall of the expansion ring (51) via the fitting ring (52).

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