CN210599741U

CN210599741U - Knocking type expansion bolt

Info

Publication number: CN210599741U
Application number: CN201921135558.5U
Authority: CN
Inventors: 胡永海
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-05-22
Anticipated expiration: 2029-07-19

Abstract

The utility model relates to a knocking type expansion bolt, which comprises an expansion pipe (1) and a striking head (2); the expansion pipe (1) comprises a bulge (13), internal teeth (12), an opening (11) and a main body (14); the main body (14) is columnar, an opening (11) is formed in one end of the main body, and a bulge (13) is formed in the outer side of the main body; internal teeth (12) are arranged in the opening (11); one end of the impact head (2) is larger, the other end of the impact head is conical, and external teeth (21) are arranged on the conical inclined plane; the expansion pipe (1) is pressed to the impact head (2) under force, the impact head (2) is inserted into the opening (11) and is fixed in a meshing mode through the internal teeth (12) and the external teeth (21), so that the expansion pipe (1) is expanded, and the protrusions (13) are made to grasp a hole wall.

Description

Knocking type expansion bolt

Technical Field

The utility model relates to a percussive expansion bolt.

Background

Most expansion bolts on the market are fixed by slightly expanding the expansion bolts by screwing screws, and are easy to loosen.

Disclosure of Invention

To the weak point among the prior art, the utility model discloses with a percussive expansion bolt, solved foretell difficult problem.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model relates to a percussive expansion bolt, its characterized in that: comprises an expansion pipe and an impact head;

the expansion pipe comprises a bulge, inner teeth, an opening and a main body;

the main body is columnar, one end of the main body is provided with an opening (11), and the outer side of the main body is provided with a bulge;

internal teeth are arranged in the opening;

one end of the impact head is larger, the other end of the impact head is conical, and external teeth are arranged on the conical inclined plane;

further, the internal teeth and the external teeth are matched in the direction and opposite in arrangement direction.

Further, the inner tooth tip faces in the opposite direction to the opening.

Further, the expansion tube is forced against the impact head, the impact head is inserted into the opening, secured by the internal and external teeth, thereby expanding the expansion tube and causing the projections to grip the hole wall.

Has the advantages that: the utility model relates to a percussive expansion bolt, simple structure, convenient to use is difficult to take place the pine to take off.

Drawings

FIG. 1 is a schematic structural view of the present invention;

as shown in fig. 1; 1-expansion tube, 2-impact head, 11-opening, 12-internal teeth, 13-bulge, 14-main body, 21-external teeth.

Detailed Description

The present invention is described below with reference to specific examples. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention in any way.

As shown in fig. 1; the utility model relates to a percussive expansion bolt, include expansion pipe (1), striking head (2), opening (11), internal tooth (12), arch (13), main part (14), external tooth (21).

Wherein, the expansion pipe (1) comprises a bulge (13), internal teeth (12), an opening (11) and a main body (14).

The main body (14) is columnar, an opening (11) is formed in one end of the main body, and a protrusion (13) is arranged on the outer side of the main body.

Wherein, internal teeth (12) are arranged in the opening (11).

The impact head (2) is large in one end and small in the other end, and outer teeth (21) are arranged on the inclined plane of the cone.

Further, the internal teeth (12) and the external teeth (21) are matched in the opposite direction.

Further, the top end of the internal tooth (12) faces to the opposite direction of the opening.

Further, the expansion pipe (1) is pressed towards the impact head (2) under force, the impact head (2) is inserted into the opening (11), the expansion pipe (1) is expanded through the engagement and fixation of the internal teeth (12) and the external teeth (21), and the protrusions (13) grip the hole wall.

Claims

1. A knock-on expansion bolt characterized by: comprises an expansion pipe (1) and an impact head (2); the expansion pipe (1) comprises a bulge (13), internal teeth (12), an opening (11) and a main body (14); the main body (14) is columnar, an opening (11) is formed in one end of the main body, and a bulge (13) is formed in the outer side of the main body; internal teeth (12) are arranged in the opening (11); one end of the impact head (2) is larger, the other end of the impact head is conical, and external teeth (21) are arranged on the conical inclined plane; the expansion pipe (1) is pressed to the impact head (2) under force, the impact head (2) is inserted into the opening (11) and is fixed in a meshing mode through the internal teeth (12) and the external teeth (21), so that the expansion pipe (1) is expanded, and the protrusions (13) are made to grasp a hole wall.

2. A knock type expansion bolt according to claim 1 in which the internal teeth (12) are aligned in the opposite direction to the external teeth (21).

3. A knock type expansion bolt according to claim 1 in which the tips of the internal teeth (12) face in the opposite direction to the opening.