CN213331940U

CN213331940U - Round-head cross self-tapping screw

Info

Publication number: CN213331940U
Application number: CN202022404116.5U
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: 2021-06-01
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a button head cross self tapping screw relates to self tapping screw technical field, for solving and all installing with the help of the tapping sword when installing, when using the tapping sword to install, because the object texture is different, the effort variation of applying of tapping sword, just lead to tapping sword and screw to skid when applying the effort too big and drop easily, the not good problem of installation effect. Be provided with anti rust coating on the outer wall of the screw body of rod, the one end of the screw body of rod is provided with trapezoidal connecting block, the other end of the screw body of rod is provided with the screw head of attacking, one side of trapezoidal connecting block is provided with the screw button head, the cross-section of screw button head sets up to circular, be provided with cross awl type groove on the side end face of screw button head, the degree of depth in cross awl type groove sets up to 4MM, the inboard in cross awl type groove is provided with excessive fillet, and excessive fillet is provided with four, the outside of the screw body of rod is provided with the thread tooth.

Description

Round-head cross self-tapping screw

Technical Field

The utility model relates to a self tapping screw technical field specifically is a button head cross self tapping screw.

Background

The self-tapping screw is pointed, thick and hard, and is made of aluminium alloy and plastics, and is used for making non-metal or soft metal, and has no need of drilling bottom hole and tapping, at the same time, the self-tapping screw is pointed, and can be used for "tapping, drilling, extruding and pressing" correspondent screw thread on the solidified material by means of its self-screw thread, so that they are mutually tightly matched. The self-tapping screw is a screw with a drill bit, and drilling, tapping, fixing and locking are completed at one time through construction of a special electric tool. The self-tapping screw is mainly used for connecting and fixing a plurality of thin plate pieces.

At present, the cross self tapping screw that uses all installs with the help of the tapping sword when installing, when using the tapping sword to install, because the object texture is different, the effort variation of tapping sword institute applied just leads to easily tapping sword and screw to skid when applying the effort too big and drop, and the installation effect is not good, can not satisfy the user demand. Therefore, there is a strong need in the market for a round head cross self-tapping screw to solve these problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a button head cross self tapping screw to propose in solving above-mentioned background art and all install with the help of the tapping sword when installing, when using the tapping sword to install, because the object texture is different, the effort variation of applying of tapping sword, just lead to the tapping sword to skid with the screw when applying the effort too big and drop, the not good problem of installation effect easily.

In order to achieve the above object, the utility model provides a following technical scheme: a round head cross self-tapping screw comprises a screw rod body, wherein the outer wall of the screw rod body is provided with an antirust coating, one end of the screw rod body is provided with a ladder-shaped connecting block, the other end of the screw rod body is provided with a screw tapping head, the trapezoidal connecting block and the screw tapping head are arranged as an integral structure with the screw rod body, one side of the trapezoidal connecting block is provided with a screw round head, the screw round head and the trapezoidal connecting block are arranged into an integral structure, the section of the screw round head is round, a cross-shaped conical groove is arranged on the side end face of the screw round head, and the cross conical groove and the screw round head are punched into an integral structure, the depth of the cross conical groove is set to be 4MM, the inside in cross awl type groove is provided with excessive fillet, and excessive fillet is provided with four, the outside of the screw body of rod is provided with the screw thread, and the screw thread sets up structure as an organic whole with the screw body of rod.

Preferably, the inside in cross taper type groove is provided with the corner non slipping spur, and the corner non slipping spur sets up in excessive fillet position department, four the corner non slipping spur all sets up structure as an organic whole with the screw button head.

Preferably, the middle position department of the screw rod body is provided with a chip groove, and the chip groove and the screw rod body are punched into an integral structure, the depth of the chip groove is set to be 1 MM.

Preferably, the both sides of screw tap head all are provided with the tapping screw thread, and the tapping screw thread sets up structure as an organic whole with the screw tap head, two the tapping screw thread symmetry sets up the both sides at the screw tap head, the one end of tapping screw thread contacts with the one end of screw thread.

Preferably, the outside of the screw body of rod is provided with prevents curved strengthening rib, prevents that curved strengthening rib is provided with six, and prevents curved strengthening rib and the screw body of rod and set up structure as an organic whole, four prevent that curved strengthening rib sets gradually on the outer wall of the screw body of rod.

Preferably, the outside of trapezoidal connecting block is provided with the stress balance gasket, and stress balance gasket and trapezoidal connecting block sliding connection, be provided with the spacing groove on the side end face of stress balance gasket, be provided with the bearing awl piece between trapezoidal connecting block and the stress balance gasket, and bearing awl piece and trapezoidal connecting block set up structure as an organic whole, the one end of bearing awl piece extends to the inside of spacing groove, and bearing awl piece and stress balance gasket sliding connection.

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

1. the utility model discloses a device can collect the piece of tapping when the screw is installed with the help of attacking the chip groove through attacking the setting of chip groove to improved tapping efficiency, also can avoid the piece to pile up extrusion thread in the tapping groove simultaneously, reduced the thread damage. The problem of the piece that produces among the tapping process remains and extrudees the screw thread in tapping groove is solved.

2. The utility model discloses a device passes through the corner non slipping spur and prevents the setting of curved strengthening rib, prevents that curved strengthening rib can increase the structural strength of screw to effectual uneven emergence of stress is crooked in avoiding screw tapping process, and the corner non slipping spur then appears skidding when can effectually avoiding tapping sword installation screw, thereby has improved screw installation effectiveness. The problem of screw and tapping sword excessive extrusion skid easily and the atress is uneven appears crooked easily is solved.

3. The utility model discloses a device passes through the setting of stress balance gasket, can increase the area of contact between screw and the installed part with the help of the stress balance gasket to make the screw fixation more firm, and can also be askew when effectually avoiding the screw installation, improved the installation effect. The problem of askew easily primary election in the screw installation is solved.

Drawings

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

FIG. 2 is a side view of the round head of the screw of the present invention;

FIG. 3 is a cross-sectional view of the screw body of the present invention;

fig. 4 is a partial enlarged view of the area a of the present invention.

In the figure: 1. a screw rod body; 2. a ladder-shaped connecting block; 3. round heads of screws; 4. a stress balancing pad; 5. tapping a chip groove; 6. thread teeth; 7. tapping a screw; 8. tapping screw teeth; 9. a bending-proof reinforcing rib; 10. a cross-shaped conical groove; 11. corner anti-slip blocks; 12. a limiting groove; 13. a bearing surface conical block; 14. and (4) excessive rounding.

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. 1-4, the present invention provides an embodiment: a round-head cross self-tapping screw comprises a screw rod body 1, an anti-rust coating is arranged on the outer wall of the screw rod body 1, the anti-rust coating improves anti-rust performance, one end of the screw rod body 1 is provided with a trapezoidal connecting block 2, the other end of the screw rod body 1 is provided with a screw tapping head 7, the trapezoidal connecting block 2 and the screw tapping head 7 are both arranged into an integral structure with the screw rod body 1, one side of the trapezoidal connecting block 2 is provided with a screw round head 3, the screw round head 3 and the trapezoidal connecting block 2 are arranged into an integral structure, the cross section of the screw round head 3 is round, a cross conical groove 10 is arranged on the side end face of the screw round head 3, the cross conical groove 10 and the screw round head 3 are punched into an integral structure, the depth of the cross conical groove 10 is set to be 4MM, the cross conical groove 10 is convenient to install by using a tapping knife, the inner, excessive fillet 14 is provided with four, and the outside of the screw body of rod 1 is provided with thread 6, and thread 6 sets up structure as an organic whole with the screw body of rod 1, and thread 6 is convenient for the screw body of rod 1 screw in.

Further, the inside of cross taper type groove 10 is provided with corner non slipping spur 11, and corner non slipping spur 11 is provided with four, and corner non slipping spur 11 sets up in excessive fillet 14 position department, and four corner non slipping spurs 11 all set up structure as an organic whole with screw button head 3. Can avoid the tapping sword to skid through corner non slipping spur 11, improve the installation effect.

Furthermore, a chip tapping groove 5 is formed in the middle of the screw rod body 1, the chip tapping groove 5 and the screw rod body 1 are punched into an integral structure, and the depth of the chip tapping groove 5 is set to be 1 MM. Tapping chips can be collected through the chip tapping grooves 5, and the extrusion acting force on the thread ridge 6 is reduced.

Further, the both sides of screw tap head 7 all are provided with tapping screw thread 8, and tapping screw thread 8 sets up structure as an organic whole with screw tap head 7, and two 8 symmetries of tapping screw thread set up in the both sides of screw tap head 7, and the one end of tapping screw thread 8 contacts with the one end of screw thread 6. The tapping head 7 can be screwed in better by tapping the thread 8.

Further, the outside of the screw rod body 1 is provided with prevents curved strengthening rib 9, prevents that curved strengthening rib 9 is provided with six, and prevents that curved strengthening rib 9 sets up structure as an organic whole with the screw rod body 1, and four prevent that curved strengthening rib 9 sets gradually on the outer wall of the screw rod body 1. The structural strength of the screw is increased through the bending-prevention reinforcing ribs 9, so that the screw is prevented from being bent due to uneven stress.

Further, the outside of trapezoidal connecting block 2 is provided with stress balance gasket 4, and stress balance gasket 4 and trapezoidal connecting block 2 sliding connection, be provided with spacing groove 12 on stress balance gasket 4's the side end face, be provided with between trapezoidal connecting block 2 and the stress balance gasket 4 and hold a face awl piece 13, and hold a face awl piece 13 and trapezoidal connecting block 2 and set up structure as an organic whole, the one end of holding a face awl piece 13 extends to the inside of spacing groove 12, and holds a face awl piece 13 and stress balance gasket 4 sliding connection. The stress area can be increased through the stress balance gasket 4, the installation is firmer, and the skew of screws can be avoided.

The working principle is as follows: when in use, the pointed end of the screw tapping head 7 is aligned to an object, the tapping knife is inserted into the cross-shaped tapered groove 10 and is rotated, the screw is driven to rotate by the tapping knife, the corner anti-slip blocks 11 can effectively avoid excessive stress slipping, a corresponding tapping channel can be formed by utilizing the extrusion acting force between the tapping screw teeth 8 and the object, so that the screw and the object can be installed, the scraps generated by tapping are guided into the chip tapping groove 5 along the tapping channel to be collected, can avoid the damage of the thread 6 caused by the excessive extrusion of the thread 6 and the chips accumulated in the tapping channel, the contact area can be increased by the stress balance gasket 4 after the installation is finished, thereby make the firm cross cutting of installation more judge the screw installation through the stress balance gasket 4 and the connection state of trapezoidal connecting block 2 whether askew has taken place, be convenient for finely tune, improved the installation quality and the life of screw.

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 button head cross self tapping screw, includes the screw body of rod (1), its characterized in that: the anti-rust coating is arranged on the outer wall of the screw rod body (1), one end of the screw rod body (1) is provided with a trapezoidal connecting block (2), the other end of the screw rod body (1) is provided with a screw tapping head (7), the trapezoidal connecting block (2) and the screw tapping head (7) are both arranged into an integral structure with the screw rod body (1), one side of the trapezoidal connecting block (2) is provided with a screw round head (3), the screw round head (3) and the trapezoidal connecting block (2) are arranged into an integral structure, the cross section of the screw round head (3) is arranged into a circular shape, a cross-shaped conical groove (10) is arranged on the side end face of the screw round head (3), the cross-shaped conical groove (10) and the screw round head (3) are punched into an integral structure, the depth of the cross-shaped conical groove (10) is set to be 4MM, and the inner side of the cross-shaped conical groove (10), excessive fillet (14) are provided with four, the outside of the screw body of rod (1) is provided with screw thread (6), and screw thread (6) and the screw body of rod (1) set up structure as an organic whole.

2. A round head cross self-tapping screw as defined in claim 1, wherein: the novel screw driver is characterized in that corner anti-slip blocks (11) are arranged inside the cross conical grooves (10), four corner anti-slip blocks (11) are arranged, the corner anti-slip blocks (11) are arranged at positions of excessive fillets (14), and the corner anti-slip blocks (11) are all arranged with the screw round heads (3) to form an integrated structure.

3. A round head cross self-tapping screw as defined in claim 1, wherein: the middle position department of the screw rod body (1) is provided with attacks chip groove (5), and attacks chip groove (5) and screw rod body (1) punching press integral structure, the degree of depth of attacking chip groove (5) sets up to 1 MM.

4. A round head cross self-tapping screw as defined in claim 1, wherein: the both sides of head (7) are all provided with tapping screw thread (8) to the screw, and tapping screw thread (8) set up structure as an organic whole with screw head (7), two tapping screw thread (8) symmetry sets up the both sides at screw head (7), the one end of tapping screw thread (8) contacts with the one end of screw thread (6).

5. A round head cross self-tapping screw as defined in claim 1, wherein: the outside of the screw rod body (1) is provided with prevents curved strengthening rib (9), prevents that curved strengthening rib (9) is provided with six, and prevents that curved strengthening rib (9) sets up structure as an organic whole, four with the screw rod body (1) prevent that curved strengthening rib (9) sets gradually on the outer wall of the screw rod body (1).

6. A round head cross self-tapping screw as defined in claim 1, wherein: the outside of trapezoidal connecting block (2) is provided with stress balance gasket (4), and stress balance gasket (4) and trapezoidal connecting block (2) sliding connection, be provided with spacing groove (12) on the side end face of stress balance gasket (4), be provided with between trapezoidal connecting block (2) and stress balance gasket (4) and hold a conical block (13), and hold a conical block (13) and set up to structure as an organic whole with trapezoidal connecting block (2), the one end that holds a conical block (13) extends to the inside of spacing groove (12), and holds a conical block (13) and stress balance gasket (4) sliding connection.