CN206943169U

CN206943169U - Cut tail trilobular thread screws

Info

Publication number: CN206943169U
Application number: CN201720422872.6U
Authority: CN
Inventors: 张伟
Original assignee: Chongqing Dazhuo Metal Products Co Ltd
Current assignee: Chongqing Dazhuo Metal Products Co Ltd
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2018-01-30
Anticipated expiration: 2027-04-21

Abstract

The utility model provides one kind and cuts tail trilobular thread screws, including the tooth on screw body and screw body, the tail end of the screw body is up big and down small round table-like, first isosceles triangle of the cross section of the tooth for tip outwardly, and the inside side in two sides at the first isosceles triangle tip is bent to form the second bigger isosceles triangle of drift angle.Provided by the utility model to cut tail trilobular thread screws strong applicability, adherence is good, makes trilobular thread screws performance more excellent.

Description

Cut tail trilobular thread screws

Technical field

It the utility model is related to screw, and in particular to cutting tail trilobular thread screws.

Background technology

Trilobular thread screws is a kind of conventional screw, but requirement of the existing trilobular thread screws to nut aperture is higher, attacks It is not high to enter rear adherence.

Utility model content

For the drawbacks described above and problem of prior art, technical problem to be solved in the utility model is existing trigonodont Requirement of the screw to nut aperture is higher, and it is not high to shoot rear adherence.

In order to achieve the above object, the utility model provides following technical scheme：

The tooth on tail trilobular thread screws, including screw body and screw body is cut, the tail end of the screw body is upper big Under small round table-like, the first isosceles triangle of the cross section of the tooth for tip outwardly, and the first isosceles triangle tip The inside side in two sides be bent to form the second bigger isosceles triangle of drift angle.

Provided by the utility model to cut tail trilobular thread screws strong applicability, adherence is good, makes trilobular thread screws performance more It is excellent.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the cross-sectional structure schematic diagram of tooth.

In figure, 1, screw body；2nd, tooth；3rd, tail end；4th, the second isosceles triangle；5th, the first isosceles triangle.

Embodiment

Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, Obviously, described embodiment is only the utility model part of the embodiment, rather than whole embodiments.Based on this practicality Embodiment in new, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made Example is applied, belongs to the scope of the utility model protection.

As shown in Figure 1 and Figure 2, include as the tail trilobular thread screws that cuts shown in embodiment on screw body and screw body Tooth, the tail end of screw body is up big and down small round table-like, the first isosceles triangle of the cross section of tooth for tip outwardly, and And first isosceles triangle tip the inside side in two sides be bent to form the second bigger isosceles triangle of drift angle.

The advantages of the utility model, is as follows：

1st, " cut tail trilobular thread screws " and lock backteeth peak and be expanded to the adherence of screw thread bottom and contact and be not easy to loosen, and drill not Must be too deep, during for shooting parent part this firm stress and tight ness rating producing stronger tooth, be easy to the function that row cuts, this new production Product are broadly applicable：Electric product, traffic tool, household supplies, precision machinery, plastic products, reduce its tapping processing procedure and its Relevant cost.

2nd, compensate for traditional triangle tooth screw must bore macropore this weakness, and aperture is cut and tapping cost beneficial to row.

3rd, larger parent part aperture difference can be allowed.

4th, tapping can be entered to the parent part for having paint, glue or welding slag in the same old way, accommodation is wider.

5th, first twist tooth after primary screw face lock its adherence can make contact with parent part be not easy draw a silk, and without incidentally spring Packing ring or nut.

It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be described with power The protection domain that profit requires is defined.

Claims

1. tail trilobular thread screws is cut, including the tooth on screw body and screw body, it is characterised in that：The tail of the screw body Hold to be up big and down small round table-like, the first isosceles triangle of the cross section of the tooth for tip outwardly, and the first isosceles three The angular sophisticated inside side in two sides is bent to form the second bigger isosceles triangle of drift angle.