Rivet with cap

Abstract

The utility model belongs to the technical field of rivets, and relates to a capped rivet which comprises a rivet shell and a rivet core, the rivet core is sequentially provided with a rivet head, a fracture, a hand riveter combination section and a friction wire from top to bottom, the rivet core is provided with reverse buckling teeth, the rivet shell is provided with buckling tooth necks matched with the reverse buckling teeth, and the rivet shell is provided with at least one crumple groove. The nail further comprises a cap matched with the bottom of the nail shell. The inverted buckling teeth are arranged on the rivet core, the inner wall, extruded into a drum, of the deformed rivet shell is buckled into the teeth of the inverted buckling teeth to achieve mutual embedding, therefore, the metal elasticity of the rivet shell deformed into the drum is resisted, the connection strength of the rivet shell is further guaranteed, and meanwhile after connection is completed, the cap is buckled on the bottom of the rivet shell to achieve blocking.

Description

Technical Field

[0001] The utility model belongs to the technical field of rivets and relates to a capped rivet. Background Art

[0002] A rivet is a nail-shaped object used to connect two parts with a through-hole. During the riveting process, a rivet gun deforms the rivet, securing the two parts together.

[0003] The existing Chinese utility model patent with announcement number CN221942922U is a waterproof single-drum rivet including a nail core and a nail shell. The nail core is set through the nail shell. A protrusion is provided near the outer side of the bottom of the nail shell to improve the connection strength; a groove is provided at the edge of the rivet hole at the bottom of the nail shell.

[0004] The existing technology has the following technical defects:

[0005] The above technical solution can achieve the connection and fixation of the two parts and can achieve a certain waterproof function, but the nail shell is made of metal. The metal has a certain metal elasticity after deformation, so that the upper part of the rivet nail shell is deformed into a drum part, which drives the nail core to move outward, thereby affecting the fixing force and connection strength between the two parts. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a capped rivet.

[0007] The capped rivet described in the utility model comprises a rivet shell and a rivet core. The rivet core is provided with a rivet head, a fracture, a rivet gun coupling section and a friction wire in sequence from top to bottom. The rivet core is provided with undercut teeth, the rivet shell is provided with a tooth shrinkage adapted to the undercut teeth, and the rivet shell is provided with at least one collapse groove. The utility model also includes a cap adapted to the bottom of the rivet shell.

[0008] Working process or working principle:

[0009] When in use, the rivet is passed through two holes of the parts so that the bottom of the rivet shell is against the parts, and then it is tightened and deformed to fix it through a rivet gun. When tightened and deformed, the buckle teeth of the rivet shell are tightly stuck with the inverted teeth on the rivet core. When the rivet gun is pulled off, the through hole at the bottom of the rivet shell is blocked and sealed by covering it with a cap to complete the connection of the parts.

[0010] The undercut teeth are arranged at the connection between the nail head and the nail core. By arranging the undercut teeth at the position of the nail core close to the nail head, a certain sealing effect can be achieved, and the connection strength problem caused by metal elasticity can also be reduced.

[0011] The outer diameter of the undercut teeth is larger than the diameter of the nail core, and the inner diameter of the undercut teeth is smaller than the diameter of the nail core.

[0012] The diameter of the top of the button tooth necking is smaller than the diameter of the nail head.

[0013] The nail shell is provided with two collapse grooves, and the double drum shape of the nail shell can be achieved by providing the two collapse grooves.

[0014] The bottom of the nail shell is provided with an avoidance groove near the edge of the rivet hole of the part. The avoidance groove can avoid burrs on the edge of the rivet hole on the part, and can avoid burrs so that the nail shell and the part can fit tightly.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides undercut teeth on the nail core, so that the inner wall of the nail shell squeezed into a drum after deformation is buckled into the teeth of the undercut teeth to achieve mutual embedding, thereby resisting the metal elasticity of the nail shell deformed into a drum, thereby ensuring the connection strength. At the same time, after the connection is completed, a cap is buckled on the bottom of the nail shell to achieve sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model.

[0018] Figure 2 This is a structural diagram of the nail core in the utility model.

[0019] Figure 3 This is a schematic diagram of the nail shell structure in Example 1 of the present utility model.

[0020] Figure 4 This is a schematic diagram of the final state of Example 1 of the utility model.

[0021] Figure 5 This is a schematic diagram of the nail shell structure in Example 2 of the present utility model.

[0022] Figure 6 This is a schematic diagram of the final state of Example 2 of the present utility model.

[0023] In the figure: 1. Nail head; 2. Undercut tooth; 3. Nail core; 4. Nail shell; 5. Rivet gun joint section; 6. Friction wire; 7. Fracture; 8. Tooth shrinkage; 9. Collapse groove; 10. Avoidance groove; 11. Cap. DETAILED DESCRIPTION

[0024] Example 1

[0025] like Figures 1 to 4As shown, the capped rivet of the present invention comprises a nail shell 4 and a nail core 3, the nail core 3 is provided with a nail head 1, a fracture 7, a rivet gun coupling section 5 and a friction wire 6 in sequence from top to bottom, the nail core 3 is provided with an undercut tooth 2, the nail shell 4 is provided with a tooth shrinkage 8 adapted to the undercut tooth 2, and the nail shell 4 is provided with at least one collapse groove 9; it also includes a cap 11 adapted to the bottom of the nail shell 4; the undercut tooth 2 is provided at the connection between the nail head 1 and the nail core 3, and a certain sealing effect can be achieved by arranging the undercut tooth 2 at the position of the nail core 3 close to the nail head 1, and it can also Reduce the connection strength problem caused by metal elasticity; the outer tooth diameter of the undercut tooth 2 is larger than the diameter of the nail core 3, and the inner tooth diameter of the undercut tooth 2 is smaller than the diameter of the nail core 3; the diameter of the top of the tooth neck 8 is smaller than the diameter of the nail head 1; two collapse grooves 9 are provided on the nail shell 4, and the double drum shape of the nail shell 4 can be achieved by setting two collapse grooves 9; an avoidance groove 10 is provided at the bottom of the nail shell 4 near the edge of the rivet hole of the part, and the avoidance groove 10 can avoid burrs on the edge of the rivet hole on the part, and can avoid burrs and make the nail shell 4 fit tightly with the part.

[0026] Working process or working principle:

[0027] When in use, the rivet is passed through the two part holes so that the bottom of the nail shell 4 is against the part, and then it is tightened and deformed to fix it through a rivet gun. When tightened and deformed, the buckle teeth 8 of the nail shell 4 are tightly clamped with the undercut teeth 2 on the nail core 3, and the inner wall of the top of the nail shell 4 is tightly clamped into the undercut teeth 2, achieving mutual fixation and a certain sealing effect. When the rivet gun is pulled off, the cap 11 is covered on the through hole at the bottom of the nail shell 4 to block and seal it, completing the connection of the parts.

[0028] Example 2

[0029] like Figures 5 and 6 As shown, the difference from embodiment 1 is that the nail shell 4 described in this embodiment is provided with two collapse grooves 9, and the double drum shape of the nail shell 4 can be achieved by providing the two collapse grooves 9.

[0030] The utility model provides undercut teeth 2 on the nail core 3, so that the inner wall of the nail shell 4 squeezed into a drum after deformation is buckled into the teeth of the undercut teeth 2 to achieve mutual embedding, thereby resisting the metal elasticity of the nail shell 4 deformed into a drum, thereby ensuring its connection strength. At the same time, after the connection is completed, the cap 11 is buckled on the bottom of the nail shell 4 to achieve sealing.

[0031] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up and down, does not constitute a limitation of the present invention and is only for the convenience of description.

Claims

1. A capped rivet, comprising a rivet shell (4) and a rivet core (3), wherein the rivet core (3) is provided with a rivet head (1), a fracture (7), a rivet gun coupling section (5) and a friction wire (6) in order from top to bottom, characterized in that: The nail core (3) is provided with an undercut tooth (2), the nail shell (4) is provided with a tooth shrinkage (8) adapted to the undercut tooth (2), and the nail shell (4) is provided with at least one collapse groove (9); It also includes a cap (11) that matches the bottom of the nail shell (4).

2. The capped rivet according to claim 1, characterized in that: The undercut teeth (2) are arranged at the connection between the nail head (1) and the nail core (3).

3. The capped rivet according to claim 2, characterized in that: The outer diameter of the undercut tooth (2) is larger than the diameter of the nail core (3), and the inner diameter of the undercut tooth (2) is smaller than the diameter of the nail core (3).

4. The capped rivet according to claim 3, characterized in that: The diameter of the top of the button tooth necking (8) is smaller than the diameter of the nail head (1).

5. The capped rivet according to any one of claims 1 to 4, characterized in that: The nail shell (4) is provided with two collapse grooves (9).

6. The capped rivet according to claim 5, characterized in that: The bottom of the nail shell (4) is provided with an avoidance groove (10) near the edge of the part rivet hole.

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