CN220668078U

CN220668078U - Drilling tail nail

Info

Publication number: CN220668078U
Application number: CN202322192080.2U
Authority: CN
Inventors: 权华; 李君�; 张金龙
Original assignee: Gem Duo Co ltd
Current assignee: Gem Duo Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-03-26
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses a drilling tail nail which comprises a screw head, a disc-shaped block, a fixed column and a cross-shaped self-tapping head, wherein a hollow cavity is arranged in the fixed column, rotating shafts are arranged at one side, close to the top and the bottom, of the inner wall of the hollow cavity through rotating grooves, a connecting arm is sleeved outside the end part of the rotating shaft, a spiral spring is connected to the outer wall of the rotating shaft, one end of the spiral spring is welded with one side of the inner wall of the hollow cavity, a first through groove is formed in the periphery of the fixed column, close to the screw head, in a penetrating manner, a second through groove is formed in the periphery of the fixed column, close to the cross-shaped self-tapping head, and a second limiting piece and a first limiting piece are respectively connected to one side of two ends of the connecting arm. This novel possess limit structure after being connected with the screw hole, can effectively promote the anti-disengaging effect of screw, be fit for extensively using widely.

Description

Drilling tail nail

Technical Field

The utility model relates to the technical field of metal connectors, in particular to a drilling tail nail.

Background

The self-tapping screw has self-tapping effect on the head, and has high ductile pulling force and high maintenance force after connection, and is applied to the fields of building traffic and the like.

The prior tail drilling nail has the following defects: 1. the screw hole is connected with the screw hole, and then the screw hole is not provided with a limiting structure, so that the anti-falling effect of the screw can not be effectively improved. To this end we propose a self drilling nail.

Disclosure of Invention

The utility model mainly aims to provide a drilling tail nail which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a drill tail nail, includes screw head, disc piece, fixed column and cross self tapping head, be provided with the cavity in the fixed column, cavity intracavity wall one side is close to top and bottom department and all is provided with the axis of rotation through the change groove, axis of rotation tip outside cover is equipped with the linking arm, axis of rotation outer wall connection has the scroll spring, scroll spring one end and cavity intracavity wall one side welded connection, the fixed column periphery is close to screw head department runs through and has seted up first through groove, the fixed column periphery is close to cross self tapping head department runs through and has seted up the second through groove, linking arm both ends portion one side is connected with second spacing piece and first spacing piece respectively, second spacing piece and first spacing piece run through first through groove and second through groove respectively.

Further, a cross-shaped groove is formed in one end of the screw head, a disc-shaped block is arranged on the periphery of the other end of the screw head, and the external cross is convenient to install and detach the self-drilling screw through the cross-shaped groove.

Further, the periphery of the fixed column is provided with external threads.

Further, the fixed column is far away from screw head one end department is connected with cross self tapping head, conveniently makes this brill tail nail possess the self tapping effect through cross self tapping head.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the self-drilling nail, after the fixing column is fixed in the threaded hole through the external thread, the threaded hole is close to the opening to apply external force to the second limiting piece, the second limiting piece drives the connecting arm to rotate around the rotating shaft, the elasticity of the scroll spring is overcome, the first limiting piece is lifted upwards, the first limiting piece penetrates through the second through groove and is tightly pressed with the inner wall of the threaded hole, and therefore the self-drilling nail is provided with a limiting structure after being connected with the threaded hole, and the anti-falling effect of the screw can be effectively improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a self-drilling nail according to the present utility model.

Fig. 2 is a schematic structural view of a rotary shaft, a spiral spring, a first limiting piece and a second limiting piece of the self-drilling nail according to the present utility model.

Fig. 3 is a detailed schematic diagram of a cross-shaped self-tapping head of a self-drilling nail according to the present utility model.

In the figure: 1. a screw head; 2. a disc-shaped block; 3. a cross-shaped groove; 4. fixing the column; 5. an external thread; 6. a first through groove; 7. a second through groove; 8. a rotating shaft; 9. a first limiting piece; 10. the second limiting piece; 11. a connecting arm; 12. a cross-shaped self-tapping head; 13. a spiral spring; 14. hollow cavity.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, a self-drilling nail comprises a screw head 1, a disc-shaped block 2, a fixing column 4 and a cross-shaped self-tapping head 12, a hollow cavity 14 is arranged in the fixing column 4, a rotating shaft 8 is arranged at one side of the inner wall of the hollow cavity 14, close to the top and the bottom, through rotating grooves, a connecting arm 11 is sleeved outside the end part of the rotating shaft 8, a spiral spring 13 is connected to the outer wall of the rotating shaft 8, one end of the spiral spring 13 is welded with one side of the inner wall of the hollow cavity 14, a first through groove 6 is formed in the periphery of the fixing column 4, close to the cross-shaped self-tapping head 12, a second through groove 7 is formed in the periphery of the fixing column 4, two end parts of the connecting arm 11 are respectively connected with a second limiting piece 10 and a first limiting piece 9, and the second limiting piece 10 and the first limiting piece 9 respectively penetrate through the first through groove 6 and the second through groove 7.

Wherein, cross groove 3 has been seted up to screw head 1 one end, screw head 1 other end periphery is provided with disc piece 2.

In the embodiment, as shown in fig. 1, the external cross is convenient to mount and dismount the self-drilling tail nail through the cross-shaped groove 3.

Wherein, the periphery of the fixed column 4 is provided with external threads 5.

In this embodiment, as shown in fig. 1, the fixing post 4 is conveniently fixed in the threaded hole by the external thread 5.

Wherein, the fixing column 4 is connected with a cross self-tapping head 12 at the end far away from the screw head 1.

In this embodiment, as shown in fig. 1 and 3, the cross-shaped self-tapping head 12 is used to facilitate the self-tapping effect of the self-drilling nail.

It should be noted that, the utility model is a kind of drilling tail nail, in operation, make this drilling tail nail possess the self-tapping effect through the cross self-tapping head 12 conveniently, utilize outside cross to rise to install and dismantle this drilling tail nail through the cross groove 3 conveniently, after fixed column 4 passes through external screw thread 5 to be fixed in the screw hole, the screw hole is close to the opening part and applys external force to the second spacing piece 10, the second spacing piece 10 drives linking arm 11 and revolutes the rotation axis 8, overcome the elasticity of scroll spring 13, make first spacing piece 9 upwarp, utilize first spacing piece 9 to pass second through-slot 7, compress tightly with the screw hole inner wall between, thereby make this drilling tail nail possess limit structure after being connected with the screw hole, can effectively promote the anti-disengaging effect of screw.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a drill tail nail, includes screw head (1), disc piece (2), fixed column (4) and cross self tapping head (12), its characterized in that: be provided with cavity (14) in fixed column (4), cavity (14) inner wall one side is close to top and bottom department and all is provided with axis of rotation (8) through the change groove, axis of rotation (8) tip outside cover is equipped with linking arm (11), axis of rotation (8) outer wall connection has scroll spring (13), scroll spring (13) one end and cavity (14) inner wall one side welded connection, fixed column (4) periphery is close to screw head (1) department runs through and has seted up first through groove (6), fixed column (4) periphery is close to cross self tapping head (12) department runs through and has seted up second through groove (7), linking arm (11) both ends one side is connected with second spacing piece (10) and first spacing piece (9) respectively, second spacing piece (10) and first spacing piece (9) run through first through groove (6) and second through groove (7) respectively.

2. A self-drilling nail according to claim 1, characterized in that: the novel screw comprises a screw head (1), wherein a cross-shaped groove (3) is formed in one end of the screw head (1), and a disc-shaped block (2) is arranged on the periphery of the other end of the screw head (1).

3. A self-drilling nail according to claim 1, characterized in that: and external threads (5) are arranged on the periphery of the fixing column (4).

4. A self-drilling nail according to claim 1, characterized in that: and one end of the fixing column (4) far away from the screw head (1) is connected with a cross-shaped self-tapping head (12).