CN213684881U

CN213684881U - Flat-head cross self-tapping screw

Info

Publication number: CN213684881U
Application number: CN202022406354.XU
Authority: CN
Inventors: 朱秉锋
Original assignee: Dongguan Changjun Industrial Co ltd
Current assignee: Dongguan Changjun Industrial Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-13
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a crew cut cross self tapping screw relates to self tapping screw technical field, and is not high for solving current crew cut cross self tapping screw intensity, and is comparatively fragile, and at the more strenuous problem of self tapping in-process. The fixed self-tapping screw thread portion that is provided with in top of self-tapping screw rod, be provided with self-tapping screw thread portion on the outer wall of self-tapping screw rod, the fixed self-tapping head that is provided with in below of self-tapping screw rod, the inside of self-tapping screw thread head is provided with the cross recess, the inside of cross recess is provided with reserve cross recess, the inside of reserve cross recess and cross recess all is provided with the locating hole, and the locating hole is provided with four, the outside of cross recess is provided with the movable groove, and the movable groove is provided with four, four the inside of movable groove all is provided with the fly leaf.

Description

Flat-head cross self-tapping screw

Technical Field

The utility model relates to a self tapping screw technical field specifically is a crew cut cross self tapping screw.

Background

The self-tapping screw is a screw with a drill bit, construction, drilling, tapping, fixing and locking are completed at one time through a special electric tool, the self-tapping screw is mainly used for connecting and fixing some thin plates, such as the connection of a color steel plate and a color steel plate, the connection of the color steel plate and purlines, wall beams and the like, the penetration capacity of the self-tapping screw is generally not more than 6mm, the maximum penetration capacity of the self-tapping screw is not more than 12mm, the self-tapping screw is usually exposed outdoors, and the self-tapping screw has strong corrosion resistance; the rubber sealing ring can ensure that the screw is not seeped with water and has good corrosion resistance, and the self-tapping screw is generally described by three parameters of the diameter series of the screw, the number of threads per inch and the length of the screw. The number of screw diameter stages is 10 stages and 12 stages, and the diameters of the corresponding screws are 4.87mm and 5.43mm respectively; the number of threads per inch is in the order of 14, 16 and 24, and the larger the number of threads per inch, the stronger the self-drilling capability of the drill bit. The self-tapping screw has high hardness, wide thread interval, deep thread and unsmooth surface.

The existing flat-head cross self-tapping screw is not high in strength, is fragile and is relatively laborious in the self-tapping process; therefore, the existing requirements are not met, and a flat-head cross self-tapping screw is provided for the purpose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crew cut cross self tapping screw to solve the current crew cut cross self tapping screw intensity that proposes in the above-mentioned background art not high, comparatively fragile, and at the more arduous problem of self tapping in-process.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a crew cut cross self tapping screw, includes the self tapping screw rod, the fixed self tapping screw spiral shell head that is provided with in top of self tapping screw rod, be provided with self tapping screw thread portion on the outer wall of self tapping screw rod, the fixed self tapping head that is provided with in below of self tapping screw rod, the inside of self tapping screw spiral shell head is provided with the cross recess, the inside of cross recess is provided with reserve cross recess, the inside of reserve cross recess and cross recess all is provided with the locating hole, and the locating hole is provided with four, the outside of cross recess is provided with the movable groove, and the movable groove is provided with four, four the inside of movable groove all is provided with the fly leaf.

Preferably, the lower surface of the screw head of the self-tapping screw is fixedly provided with a rubber ring, and a reinforcing rib is arranged inside the screw rod of the self-tapping screw.

Preferably, the outer wall of the tapping head is provided with a plurality of guide grooves.

Preferably, the inner walls of the spare cross groove and the cross groove are provided with anti-skid layers.

Preferably, the inner wall of the movable plate is fixedly provided with a positioning rod, one end of the positioning rod extends into the positioning hole, and two compression springs are arranged between the movable plate and the movable groove.

Preferably, a hole-expanding angle is arranged below the thread part of the self-tapping screw, and four hole-expanding angles are arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting at reaming angle can accelerate self tapping drilling's efficiency, and the guide way has played the effect of direction for self tapping head is higher at self tapping efficiency, and is more laborsaving, and the rubber circle can increase self tapping screw spiral shell head and the installation fixed more firm, has played the effect of locking moving, and the strengthening rib has improved the intensity of self tapping screw rod, prevents to screw self tapping screw with strength and leads to its fracture.

2. Through the setting of reserve cross recess, can use impaired back can continue to drill the self tapping screw at the cross recess, stir the fly leaf through the level to make reserve cross recess put into the cross recess or leave the cross recess, through the cooperation of locating lever and locating hole, be convenient for fix reserve cross recess in the cross recess, influence the self tapping of self tapping screw because of the damage with preventing the cross recess, compression spring has played the effect that resets.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic structural view of the self-tapping screw head of the present invention;

fig. 5 is a schematic structural view of the spare cross slot of the present invention.

In the figure: 1. a self-tapping screw rod; 2. a self-tapping screw head; 3. a rubber ring; 4. a self-tapping screw thread portion; 5. a tapping head; 6. a guide groove; 7. a cross groove; 8. a movable groove; 9. a movable plate; 10. positioning a rod; 11. a compression spring; 12. an anti-slip layer; 13. a spare cross groove; 14. Positioning holes; 15. reaming a hole angle; 16. and (5) reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, the present invention provides an embodiment: the utility model provides a crew cut cross self tapping screw, including self tapping screw 1, the fixed self tapping screw spiral shell head 2 that is provided with in top of self tapping screw 1, be provided with self tapping screw thread portion 4 on self tapping screw 1's the outer wall, the fixed self tapping head 5 that is provided with in below of self tapping screw 1, the inside of self tapping screw spiral shell head 2 is provided with cross recess 7, the inside of cross recess 7 is provided with reserve cross recess 13, the inside of reserve cross recess 13 and cross recess 7 all is provided with locating hole 14, and locating hole 14 is provided with four, the outside of cross recess 7 is provided with movable groove 8, and movable groove 8 is provided with four, the inside of four movable groove 8 all is provided with fly leaf 9, stir fly leaf 9 through the level, thereby make reserve cross recess 13 pack into in cross recess 7 or leave.

Further, the lower fixed surface of self tapping screw spiral shell 2 is provided with rubber circle 3, and the inside of self tapping screw rod 1 is provided with strengthening rib 16, and rubber circle 3 can increase self tapping screw spiral shell 2 and the installation fixed more firm, has played the effect of locking not hard up, and strengthening rib 16 has improved the intensity of self tapping screw rod 1, prevents to screw the self tapping screw with strength and leads to its fracture.

Further, be provided with guide way 6 on self tapping head 5's the outer wall, and guide way 6 is provided with a plurality of, and guide way 6 has played the effect of direction for self tapping head 5 is more efficient, more laborsaving in self tapping.

Further, the inner walls of the spare cross groove 13 and the cross groove 7 are provided with anti-slip layers 12, and the anti-slip layers 12 play a role in slip prevention, so that the plum blossom screwdriver is prevented from slipping.

Further, the inner wall of the movable plate 9 is fixedly provided with two positioning rods 10, one ends of the positioning rods 10 extend into the positioning holes 14, compression springs 11 are arranged between the movable plate 9 and the movable grooves 8, and the compression springs 11 are matched with the positioning rods 10 and the positioning holes 14, so that the standby cross grooves 13 are conveniently fixed in the cross grooves 7, the self-tapping of the self-tapping screws is prevented from being influenced by the damage of the cross grooves 7, and the compression springs 11 have the resetting effect.

Further, the lower side of self-tapping screw thread portion 4 is provided with reaming angle 15, and reaming angle 15 is provided with four, and self-tapping drilling's efficiency can be accelerated to reaming angle 15.

The working principle is as follows: when the self-tapping screw is used, the self-tapping head 5 of the self-tapping screw is aligned to a mounting surface to be drilled, then a plum blossom screwdriver is aligned to the cross slot 7, the self-tapping drilling efficiency can be accelerated by setting the reaming angle 15, the guide slot 6 plays a role in guiding, the self-tapping head 5 is higher in self-tapping efficiency and more labor-saving, the rubber ring 3 can increase the fixation of the screw head 2 of the self-tapping screw and the mounting surface to be firmer and more firm, the anti-loosening effect is achieved, the reinforcing rib 16 improves the strength of the screw rod 1 of the self-tapping screw, the self-tapping screw is prevented from being broken by screwing the self-tapping screw with strength, the standby cross slot 13 can be drilled continuously after the cross slot 7 is damaged by horizontally stirring the movable plate 9, so that the standby cross slot 13 is arranged in the cross slot 7 or separated from the cross slot 7, and the standby cross slot 13 is convenient to be fixed in the cross slot 7 by matching, the compression spring 11 plays a role of resetting in order to prevent the self-tapping of the tapping screw from being affected by the damage of the cross groove 7.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a crew cut cross self tapping screw, includes self tapping screw rod (1), its characterized in that: the fixed self-tapping screw thread head (2) that is provided with in top of self-tapping screw rod (1), be provided with self-tapping screw thread portion (4) on the outer wall of self-tapping screw rod (1), the fixed self-tapping head (5) that is provided with in below of self-tapping screw rod (1), the inside of self-tapping screw thread head (2) is provided with cross recess (7), the inside of cross recess (7) is provided with reserve cross recess (13), the inside of reserve cross recess (13) and cross recess (7) all is provided with locating hole (14), and locating hole (14) is provided with four, the outside of cross recess (7) is provided with movable groove (8), and movable groove (8) are provided with four, four the inside of movable groove (8) all is provided with fly leaf (9).

2. The flat-head cross self-tapping screw of claim 1, wherein: the lower fixed surface of self tapping screw spiral shell (2) is provided with rubber circle (3), the inside of self tapping screw rod (1) is provided with strengthening rib (16).

3. The flat-head cross self-tapping screw of claim 1, wherein: be provided with guide way (6) on the outer wall of self-tapping head (5), and guide way (6) are provided with a plurality of.

4. The flat-head cross self-tapping screw of claim 1, wherein: the inner walls of the spare cross groove (13) and the cross groove (7) are provided with anti-skid layers (12).

5. The flat-head cross self-tapping screw of claim 1, wherein: the inner wall of the movable plate (9) is fixedly provided with a positioning rod (10), one end of the positioning rod (10) extends into the positioning hole (14), two compression springs (11) are arranged between the movable plate (9) and the movable groove (8), and the number of the compression springs (11) is two.

6. The flat-head cross self-tapping screw of claim 1, wherein: and four reaming angles (15) are arranged below the thread part (4) of the tapping screw, and the number of the reaming angles (15) is four.