CN210739071U

CN210739071U - Closed self-plugging rivet

Info

Publication number: CN210739071U
Application number: CN201921645975.4U
Authority: CN
Inventors: 肖真; 何春阳
Original assignee: Dongguan Kseet Hardware Technology Co ltd
Current assignee: Dongguan Kseet Hardware Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-12
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses an enclosed self-plugging rivet, which comprises a rivet body and a rivet core, wherein the rivet body is of a tubular structure, the head of the rivet body is of a closed structure, a rivet cap is arranged at the opening end of the rivet body, one part of the rivet core is positioned in the rivet body, the rest part of the rivet core penetrates out of the rivet body through an opening, an extrusion block is matched at the tail end of the rivet core in the rivet body in a threaded connection mode, a filler is arranged at the outer side of the rivet core in the rivet body, the rivet core and the part of the extrusion block connected with the rivet core are both cylindrical, the diameter of the rivet core is half of the diameter of the part of the extrusion block connected with the rivet core, when the rivet core is taken out, the filler can be extruded from the bottom of the rivet body into the middle upper part of the rivet body through the extrusion block, the rivet body can be enclosed through the extrusion block, and foreign matters are prevented from entering the rivet body to corrode or damage the inside of the rivet body, and the overall strength and structural stability of the nail body can be improved through the extrusion blocks and the filler.

Description

Closed self-plugging rivet

Technical Field

The utility model belongs to the technical field of the rivet technique and specifically relates to an enclosed type self-plugging rivet.

Background

At present, if two objects are combined together, the riveting mode of the two objects by using the self-plugging rivet is simpler and quicker operation, and the fixing effect of the two objects combined in the riveting mode is better; after the self-plugging rivet rivets an object, external foreign matters easily enter the rivet to corrode the rivet due to the through hole type structure; therefore, people design a closed self-plugging rivet, which can close the through hole of the rivet, and although the closed self-plugging rivet can better prevent foreign matters from entering the rivet, the rivet body is easy to deform and cannot rivet two objects when being impacted by external force due to the hollow structure inside the rivet, so that the two objects are separated from each other; therefore, there is a need for an improved blind rivet structure.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to the above-mentioned technique, provide one kind and can extrude the filler to the well upper portion of the nail body in the bottom of the nail body through the extrusion piece when taking out the nail core, can seal the nail body through the extrusion piece, prevent that the foreign matter from entering into the nail internal to cause the corruption or damage to the internal portion of nail, and can promote bulk strength and the structural stability of the nail body through extrusion piece and filler, easy operation, the better enclosed type self-plugging rivet of riveting effect.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

closed self-plugging rivet, including the nail body and nail core, the nail body is tubular structure and head and is closed structure, the opening end department of the nail body is provided with the head of a nail, partly in the nail body of nail core, the rest of nail core runs through the nail external through the opening, is located there is extrusion piece through threaded connection's mode cooperation on the nail core tip in the nail body, is located the nail core outside in the nail body is provided with the filler, the part that nail core and extrusion piece and nail core are connected all is cylindricly, the diameter of nail core is the half of the partial diameter that extrusion piece and nail core are connected.

Furthermore, the extrusion block is fixed in the nail body through a cold heading extrusion process.

Furthermore, an annular matching groove with an oblique angle structure is formed in the inner side wall surface of the head of the nail body, the head of the extrusion block is an annular matching block with an oblique angle structure, and the annular matching block is matched in the annular matching groove.

Furthermore, a yielding groove is formed in the extrusion block on the inner side of the annular matching block, and the yielding groove is a hemispherical pit groove or a square groove.

Furthermore, the outer wall of the bottom of the extrusion block is of an arc-shaped inclined plane structure.

Further, the nail cap is of a conical countersunk structure.

Further, the bottom end of the nail core is of a conical structure.

The utility model has the advantages that:

can extrude the filler to the well upper portion of the nail body in the bottom of the nail body through the extrusion piece when taking out the nail core, can seal the nail body through the extrusion piece, prevent that the foreign matter from entering into the nail body and causing the corruption or damage to the internal portion of nail, and can promote the bulk strength and the structural stability of the nail body through extrusion piece and filler, easy operation, the riveting effect is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view when the extrusion block reaches the bottom of the nail body.

FIG. 3 is a schematic structural view of the bottom deformation of the extrusion block.

Fig. 4 is a schematic structural view after the nail core is extracted.

In the figure, a nail body 1, a nail core 2, a nail cap 3, a thread 4, an extrusion block 5, a filler 6, an annular matching groove 7, an annular matching block 8, a yielding groove 9, an object to be riveted 10 and an opening 11.

Detailed Description

As shown in fig. 1, enclosed blind rivet includes a rivet body 1 and a rivet core 2, the rivet body 1 is tubular structure and the head is enclosed structure, the opening end of the rivet body 1 is provided with a rivet cap 3, a part of the rivet core 2 is located in the rivet body 1, the rest of the rivet core 2 runs through the outside of the rivet body 1 through an opening 11, a squeezing block 5 is matched with the tail end of the rivet core 2 in the rivet body 1 through a thread 4, a filler 6 is arranged on the outside of the rivet core 2 in the rivet body 1, the rivet core 2 and the squeezing block 5 are both cylindrical, and the diameter of the rivet core 2 is half of the diameter of the part of the squeezing block 5 connected with the rivet core 2.

The extrusion block 5 is fixed in the nail body 1 through a cold heading extrusion process.

An annular matching groove 7 with an oblique angle structure is formed in the inner side wall surface of the head of the nail body 1, an annular matching block 8 with an oblique angle structure is arranged at the head of the extrusion block 5, and the annular matching block 8 is matched in the annular matching groove 7.

An abdicating groove 9 is formed in the extrusion block 5 on the inner side of the annular matching block 8, and the abdicating groove 9 is a hemispherical pit groove or a square groove.

The outer wall of the bottom of the extrusion block 5 is of an arc-shaped inclined plane structure.

The nail cap 3 is of a conical countersunk structure.

The bottom end of the nail core 2 is of a conical structure.

After the rivet is matched in the two objects to be riveted 10, the rivet core 2 is drawn out;

as shown in fig. 2, in the process of drawing out the nail core 2, the extrusion block 5 continuously presses the fillers 6 at two sides downwards and through the arc-shaped slope structure at the bottom, the fillers 6 are pressed to move upwards, the annular matching block 8 at the head of the extrusion block 5 is pressed by the annular matching groove 7 in the nail body 1 to shrink into the abdicating groove 9 in the process of downward movement of the extrusion block 5, the fillers 6 continuously fill the nail body 1 spaces at two sides of the extrusion block 5 until the extrusion block 5 reaches the bottom of the nail body 1, and in the process of downward movement of the extrusion block 5, the fillers 6 and the annular matching block 8 form an outward force on the outer wall of the nail body 1, so that the outer wall of the nail body 1 protrudes outwards, thereby realizing riveting of two objects to be riveted 10.

As shown in fig. 3, when the extrusion block 5 reaches the bottom of the nail body 1, the nail core 2 is continuously drawn outwards, the arc-shaped inclined plane structure of the extrusion block 5 is stressed and deformed, and the filler 6 outside the bottom of the extrusion block 5 is continuously extruded upwards until the arc-shaped inclined plane structure at the bottom of the extrusion block 5 is deformed into a plane structure.

As shown in fig. 4, after the mandrel 2 is completely withdrawn, the opening 11 of the shank 1 is closed by the pressing block 5.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Closed self-plugging rivet, including the nail body and nail core, the nail body is tubular structure and head and is closed structure, the opening end department of the nail body is provided with the head of a nail, partly in the nail body of nail core, the rest of nail core runs through the nail external through the opening, its characterized in that is located the mode cooperation through threaded connection has the extrusion piece on the internal nail core tip of nail, is located the internal nail core outside of nail is provided with the filler, nail core and extrusion piece all are cylindricly with the part that the nail core is connected, the diameter of nail core is the half of the partial diameter that extrusion piece and nail core are connected.

2. An enclosed blind rivet according to claim 1, in which the extrusion block is fixed in the rivet body by a cold heading extrusion process.

3. An enclosed blind rivet according to claim 1, characterized in that an annular fitting groove having an oblique angle structure is formed in an inner side wall surface of the head portion of the rivet body, the head portion of the pressing block is an annular fitting block having an oblique angle structure, and the annular fitting block is fitted in the annular fitting groove.

4. An enclosed blind rivet according to claim 3, characterized in that the extrusion block inside the annular fitting block is provided with a relief groove, and the relief groove is a hemispherical pit groove or a square groove.

5. An enclosed blind rivet according to claim 1, characterized in that the bottom outer wall of the extrusion block is of an arc-shaped inclined surface structure.

6. An enclosed blind rivet according to claim 1, in which the nut is of conical countersunk configuration.

7. An blind rivet according to claim 1, in which the bottom end of the mandrel is of a conical configuration.