CN207647940U

CN207647940U - A kind of self drilling tapping screw

Info

Publication number: CN207647940U
Application number: CN201721464137.8U
Authority: CN
Inventors: 沈大年; 瞿祖耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-06
Filing date: 2017-11-06
Publication date: 2018-07-24
Anticipated expiration: 2027-11-06

Abstract

The utility model discloses a kind of self drilling tapping screws, wherein the circular conical surface including cross recess countersunk head is equipped with the scraping muscle of several circumference array；Screw rod includes screw portion and drilling tail；The lateral surface of the upper end of screw portion is smooth surface, and lateral surface of the smooth surface down toward the lower end of screw portion is equipped with screw thread；The lower end of cross recess countersunk head and the upper end of screw portion are integrally formed, the lower end of screw portion and the upper end of drilling tail are integrally formed, and drilling tail is radial on the side of its lower end to be equipped with smooth the first clearance surface, threaded first arc surface, the first cutting face, the second clearance surface, the second arc surface and the second cutting face successively.The step of capable of once completing drilling, reaming, tapping and fastening using the self drilling tapping screw of the utility model, facilitates plank bookbinding on container.

Description

A kind of self drilling tapping screw

Technical field

The utility model is related to the technical field of container wood floor installation more particularly to a kind of skills of self drilling tapping screw Art field.

Background technology

Existing plank is bound to the pedestal of container body, is needed to first pass through brill and is scraped aperture apparatus and pass through timber floor and bottom girder It wears, the timber floor screw with tapping is then subjected to tapping and is screwed into the through-hole internal locking of the bottom girder of timber floor and container body, Complex steps increase the station and cost of labor of production line.Now designing a kind of can once complete drilling, scrape hole, tapping With the self drilling tapping screw of locking.

Utility model content

Against the above deficiency, the purpose of this utility model is to provide a kind of self drilling tapping screw, can be by plank and packaging Cabinet base is once fixed.

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

Cross recess countersunk head, the circular conical surface of the cross recess countersunk head are equipped with the scraping muscle of several circumference array；

Screw rod, the screw rod include screw portion and drilling tail；The lateral surface of the upper end of the screw portion is smooth surface, Lateral surface of the smooth surface down toward the lower end of the screw portion is equipped with screw thread；The lower end of the cross recess countersunk head and institute The upper end for stating screw portion is integrally formed, and the lower end of the screw portion and the upper end of the drilling tail are integrally formed, the drilling tail It is axial successively around equipped with the first smooth clearance surface, threaded first arc surface, the first cutting on the side of its lower end Face, the second clearance surface, the second arc surface and the second cutting face.

Above-mentioned a kind of self drilling tapping screw, wherein the scraping muscle is step-like, and the tail end of any scraping muscle is higher than The end face angle of the head end of the adjacent scraping muscle, step surface and the cross recess countersunk head is 30 °.

A kind of above-mentioned self drilling tapping screw, wherein first clearance surface is faced with second clearance surface, and described One arc surface is faced with second arc surface, and first cutting face is faced with second cutting face.

Above-mentioned a kind of self drilling tapping screw, wherein the lower end of the drilling tail is equipped with the two main cutting inclined-planes faced；One institute State the line and another main cutting inclined-plane and second cutting face intersection that main cutting inclined-plane intersects with first cutting face Line angle be in 118 °.

With above technical scheme, following advantageous effect can be reached：

1, the self drilling tapping screw of the utility model can be completed once the step of drilling, reaming, tapping and fastening, convenient Timber floor is mounted on container base.

Description of the drawings

Fig. 1 is a kind of side view of self drilling tapping screw of the utility model；

Fig. 2 is the sectional view of the A-A of Fig. 1；

Fig. 3 is the schematic diagram of a kind of scraping muscle of self drilling tapping screw of the utility model and the side of cross recess countersunk head.

In attached drawing：1, cross recess countersunk head；11, scraping muscle；2, screw rod；21, screw portion；22, drilling tail；221, the first chip removal Face；222, the first arc surface；226, the second cutting face；227, main cutting inclined-plane.

Specific implementation mode

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model It limits.

Fig. 1 is a kind of side view of self drilling tapping screw of the utility model.Fig. 2 is the sectional view of the A-A of Fig. 1.Fig. 3 is A kind of schematic diagram of the scraping muscle of the self drilling tapping screw of the utility model and the side of cross recess countersunk head.

Referring to fig. 1 to fig. 3, in a kind of preferred embodiment, a kind of self drilling tapping screw, which is characterized in that Including：

Cross recess countersunk head 1, the circular conical surface of cross recess countersunk head 1 are equipped with the scraping muscle 11 of several circumference array.

Screw rod 2, screw rod 2 include screw portion 21 and drilling tail 22；The lateral surface of the upper end of screw portion 21 is smooth surface, Lateral surface of the smooth surface of screw portion 21 down toward the lower end of screw portion 21 is equipped with screw thread；The lower end of cross recess countersunk head 1 It is integrally formed with the upper end of screw portion 21, the lower end of screw portion 21 is integrally formed with the upper end of drilling tail 22, and drilling tail 22 leans on it It is axial on the side of lower end to be cut successively around equipped with the first smooth clearance surface 221, threaded first arc surface 222, first Bevel (not shown), the second clearance surface (not shown), the second arc surface (not shown) and the second cutting face 226。

It these are only the utility model preferred embodiment, be not intended to limit the embodiment and protection of the utility model Range.

Further, in a kind of preferred embodiment, scraping muscle 11 is step-like, and the tail end of any scraping muscle 11 is higher than adjacent Scraping muscle 11 head end, the end face angle of step surface and cross recess countersunk head is 30 °.

Further, in a kind of preferred embodiment, the first clearance surface 221 is faced with the second clearance surface, the first arc surface 222 face with the second arc surface, and the first cutting face is faced with the second cutting face 226.

Further, in a kind of preferred embodiment, the lower end of drilling tail 22 is equipped with the two main cutting inclined-planes 227 faced；One The line of line and the intersection of 227 and second cutting face 226 of another main cutting inclined-plane that main cutting inclined-plane 227 intersects with the first cutting face Angle makes the success rate that drilling penetrates be greatly enhanced in 118 ° with this.

The foregoing is merely the utility model preferred embodiment, be not intended to limit the utility model embodiment and Protection domain should can appreciate that all in the utility model specification and diagram to those skilled in the art Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in In enclosing.

Claims

1. a kind of self drilling tapping screw, which is characterized in that including：

Screw rod, the screw rod include screw portion and drilling tail；The lateral surface of the upper end of the screw portion is smooth surface, described Lateral surface of the smooth surface down toward the lower end of the screw portion is equipped with screw thread；The lower end of the cross recess countersunk head and the spiral shell The upper end of bar part is integrally formed, and the lower end of the screw portion and the upper end of the drilling tail are integrally formed, and the drilling tail leans on it It is axial successively around being equipped with the first smooth clearance surface, threaded first arc surface, the first cutting face, the on the side of lower end Two clearance surfaces, the second arc surface and the second cutting face.

2. a kind of self drilling tapping screw according to claim 1, which is characterized in that the scraping muscle is step-like, Ren Yisuo The tail end for stating scraping muscle is higher than the head end of the adjacent scraping muscle, and the end face angle of step surface and the cross recess countersunk head is 30°。

3. a kind of self drilling tapping screw according to claim 1, which is characterized in that first clearance surface and the second row Bits face faces, and first arc surface is faced with second arc surface, and first cutting face is cut with described second Face faces.

4. a kind of self drilling tapping screw according to claim 1, which is characterized in that the lower end of the drilling tail is faced equipped with two Main cutting inclined-plane；The line and another main cutting inclined-plane and institute that the one main cutting inclined-plane intersects with first cutting face The angle for stating the line of the second cutting face intersection is in 118 °.