CN217440473U

CN217440473U - Round-head self-tapping screw

Info

Publication number: CN217440473U
Application number: CN202221374842.XU
Authority: CN
Inventors: 徐志国; 许克琴; 王安娣; 陈晓辉; 董萍娣
Original assignee: Yancheng Tenghong Metal Products Co ltd
Current assignee: Yancheng Tenghong Metal Products Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-16
Anticipated expiration: 2032-06-02

Abstract

The utility model belongs to the technical field of screws, in particular to a round head self-tapping screw, which comprises a first screw cap, a second screw cap and a screw rod, wherein the screw rod is fixed on one side of the first screw cap, the second screw cap is arranged on the other side of the first screw cap, a plurality of convex fixture blocks are annularly arranged at the bottom of the second screw cap, through the combined design of the first screw cap at the head part of the screw rod and the second screw cap, the second screw cap and the first screw cap are matched to use the clamping magnetic attraction effect of a flexible stopper, a limiting groove and a first magnetic attraction ring sheet and a second magnetic attraction ring sheet, and a second screw head and a first screw head which are respectively arranged on the second screw cap and the first screw cap can be assembled and disassembled for use for a long time or a plurality of frequencies, when the part of the second screw head is damaged, the part of the second screw cap is taken down from one side of the first screw cap, and then the complete part of the first screw head is exposed, the matching effect of the first screw hole and the screwdriver is utilized, the part of the screw cap with the screw rod can be screwed down, and the practicability is high.

Description

Round-head self-tapping screw

Technical Field

The utility model belongs to the technical field of the screw, concretely relates to button head self tapping screw.

Background

The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. Screws are a common term for fasteners, a daily spoken word. The screw is an indispensable industrial necessity in daily life, such as a tiny screw used by cameras, glasses, clocks, electronics and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and nuts are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes. The screw has an important task in industry, and as long as there is industry on earth, the function of the screw is always important. The screw is a common invention in production and life of people for thousands of years, and is the first invention of human according to the application field.

In the prior art, a round-head self-tapping screw is often used to meet the requirement of personnel on workpiece connection.

And traditional button head self tapping screw is when the in-service use, the back is used through exposing for a long time to the turn-on its screw cap, easily take place to damage, and then mismatch with the screwdriver, be not convenient for with the screw back-out processing, and button head self tapping screw when back-out, easy fracture appears between screw cap and lead screw, when whole lead screw card is in the work piece, then inconvenient takes out it to handle, the practicality is poor, consequently, it is necessary to provide a new button head self tapping screw, thereby effectively solve above problem.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a button head self tapping screw has and is convenient for will revolve mouthful through exposing for a long time and handle and the convenient characteristics of taking out the screw pole of whole card in the work piece and handle outside the screw that damages.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a button head self tapping screw, includes nut one, nut two and screw pole, the screw pole is fixed in one side of nut one, the nut be two in the opposite side of nut one, a plurality of convex fixture blocks have been laid to the bottom annular of nut two, nut one on the surface with the concave draw-in groove of adaptation with it is seted up to the position department that the convex fixture block corresponds, one side of convex fixture block is fixed with flexible stopper, in the nut one with the position department that flexible stopper corresponds has seted up the spacing groove, the installation cavity has been seted up to the inside of screw pole, be equipped with square movable rod in the installation cavity.

As the utility model discloses a preferred technical scheme of button head self tapping screw, flexible stopper is flexible component, just the inner chamber has been seted up to flexible stopper's inside.

As the utility model discloses a preferred technical scheme of button head self tapping screw, the convex fixture block with magnetic ring piece one and magnetic ring piece two have been laid respectively on the opposite face of concave draw-in groove, and magnetic ring piece one is inhaled with two magnetism of magnetic ring piece and is linked together.

As the utility model discloses a preferred technical scheme of button head self tapping screw, the one end integrated into one piece of square movable rod has first fixed block, the inside of screw pole is provided with the second fixed block, the second fixed block with screw pole formula structure as an organic whole.

As the utility model discloses a preferred technical scheme of button head self tapping screw, the annular distribution has a plurality of connecting strips on the lateral wall of screw cap two.

As the utility model discloses a preferred technical scheme of button head self tapping screw, the lead screw back of the body in the one end of screw cap one is most advanced structure, screw cap one with screw cap two is equipped with one number respectively on the surface and revolves the mouth and revolve the mouth No. two numbers.

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

1. when the utility model is used, through the combined design of the first screw cap and the second screw cap at the head part of the screw rod, the magnetic attraction effect of the flexible limit block, the limit groove and the first magnetic attraction ring piece and the second magnetic attraction ring piece is utilized between the second screw cap and the first screw cap, and the second rotary opening and the first rotary opening are respectively arranged on the second screw cap and the first screw cap, so that the screw can be assembled and disassembled for a long time or at multiple frequencies, when the part of the second rotary opening is damaged, the part of the second screw cap is taken down from one side of the first screw cap, and the complete part of the first rotary opening is exposed, and the part of the first rotary opening is screwed down by utilizing the matching effect of the first rotary opening and the screw driver, thereby the utility model has strong practicability, and solves the problem that when the original self-tapping screw with a round head is actually used, the rotary opening on the screw cap is easily damaged after being exposed for a long time and used, and is further not matched with the screw driver, the screw is not convenient to be screwed out for treatment;

2. the utility model discloses when using, through the square movable rod that can pull out that is equipped with in the screw in the installation cavity, can be when nut one with the screw disconnection, tear out square movable rod from the dew department of installation cavity, and cooperate vice instrument to carry the square movable rod then the rotating of tearing out, alright twist the screw of card in the work piece and rotate out, solved original button head self tapping screw when unscrewing, easy fracture appears between nut and screw, when whole screw card is in the work piece, then inconvenient take out its processing, the poor problem of practicality.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural view of a screw rod portion of the present invention.

In the figure: 1. a first screw cap; 2. a second screw cap; 3. a connecting strip; 4. screwing the opening to the first position; 5. screwing the opening II; 6. a convex fixture block; 7. a concave clamping groove; 8. a flexible limiting block; 9. a limiting groove; 10. a screw shaft; 11. a mounting cavity; 12. a square movable rod; 13. a magnetic ring piece I; 14. a second magnetic ring sheet; 15. an inner cavity; 16. a first fixed block; 17. and a second fixed block.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a round head self-tapping screw comprises a first screw cap 1, a second screw cap 2 and a screw rod 10, wherein one end of the screw rod 10, which is back to the first screw cap 1, is of a tip structure, a first screw opening 4 and a second screw opening 5 are respectively arranged on the surfaces of the first screw cap 1 and the second screw cap 2, the screw rod 10 is fixed on one side of the first screw cap 1, the second screw cap 2 is positioned on the other side of the first screw cap 1, a plurality of convex fixture blocks 6 are annularly distributed at the bottom of the second screw cap 2, concave clamping grooves 7 matched with the convex fixture blocks 6 are formed in positions, corresponding to the convex fixture blocks 6, on the surface of the first screw cap 1, a flexible limiting block 8 is fixed on one side of the convex fixture blocks 6, a limiting groove 9 is formed in the position, corresponding to the flexible limiting block 8, an installation cavity 11 is formed in the screw rod 10, a square movable rod 12 is arranged in the installation cavity 11, in the embodiment, through the combined design of the first screw cap 1 and the second screw cap 2 at the end part of the screw rod 10, utilize flexible stopper 8 between two 2 and the first 1 screw caps of cooperation screw cap, spacing groove 9 and magnetic ring piece one 13, the effect is inhaled to the joint magnetism of two 14 magnetic ring pieces, and screw cap two 2 and screw cap one 1 go up No. two that are equipped with respectively revolve mouthful 5 and revolve mouthful 4 No. one, can install and remove the use at screw length or multifrequency, when two parts of revolving a mouthful 5 damage, take off screw cap two 2's part from one side of screw cap one 1, and then expose complete one part of revolving a mouthful 4, utilize the matching effect of revolving a mouthful 4 and screwdriver No. one, alright take screw cap one 1 with the part of screw rod 10 to revolve down the processing, therefore, the clothes hanger is strong in practicability.

Wherein the flexible limiting block 8 is a flexible member, the flexible member in the utility model is rubber, and the interior of the flexible limiting block 8 is provided with an inner cavity 15, the clamping design of the flexible limiting block 8 in the corresponding limiting groove 9 is utilized to ensure that the first screw cap 1 and the second screw cap 2 can be reliably connected together, the opposite surfaces of the convex clamping block 6 and the concave clamping groove 7 are respectively paved with a magnetic suction ring piece 13 and a magnetic suction ring piece 14, and the magnetic suction ring piece 13 and the magnetic suction ring piece 14 are magnetically connected together, further favorable conditions are provided for the reliable connection of the first screw cap 1 and the second screw cap 2, in the embodiment, one end of the square movable rod 12 is integrally formed with a first fixed block 16, the interior of the screw rod 10 is provided with a second fixed block 17, the second fixed block 17 and the screw rod 10 are of an integral structure, through the square movable rod 12 which is arranged in the mounting cavity 11 in the screw rod 10 and can be pulled out, when the first screw cap 1 is disconnected with the screw rod 10, the square movable rod 12 can be pulled out from the exposed part of the mounting cavity 11, and the pulled square movable rod 12 is clamped by matching with a vice tool and then rotated, so that the screw rod 10 clamped in a workpiece can be screwed out.

And the annular distribution has a plurality of connecting strips 3 on the lateral wall of nut two 2, and in this embodiment, the design of a plurality of connecting strips 3 can utilize the clamp of vice to get the ability, screw out operation when not having the screwdriver for can reliably contact together between vice and the nut.

The utility model discloses a theory of operation and use flow: in the using process of the utility model, the screw cap II 2 with the screw cap I1 and the screw rod 10 can be screwed at a proper position on the workpiece by utilizing the matching action between the screw driver and the screw cap II 5;

when the screw is used for a long time and needs to be taken out, if the part of the second screw opening 5 is not damaged, the screwdriver can be directly matched with the second screw opening 5 to integrally rotate the screw to take out;

if the second screw opening 5 is partially damaged, the part of the second screw cap 2 can be pulled away from one side back to the screw rod 10, at the moment, the convex clamping block 6 and the flexible limiting block 8 are respectively separated from the corresponding concave clamping groove 7 and the corresponding limiting groove 9, the first screw opening 4 on the surface of the first screw cap 1 is exposed, and then the first screw cap 1 with the screw rod 10 can be taken down and processed by directly matching the first screw opening 4 with a screwdriver;

meanwhile, in the process of screwing down the screw, when the joint of the first nut 1 and the screw rod 10 is broken, the part of the screw rod 10 is clamped in a workpiece, the part of the square movable rod 12 can be pulled out to the outside, the first fixed block 16 is in contact with the second fixed block 17, the part of the square movable rod 12 is in an outward protruding shape, the square movable rod 12 pulled out is clamped by a vice tool and then rotates, the screw rod 10 clamped in the workpiece can be screwed out, and the efficient and safe use and operation of the round-head self-tapping screw are guaranteed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A round head self-tapping screw is characterized by comprising a first screw cap (1), a second screw cap (2) and a screw rod (10), the screw rod (10) is fixed on one side of the first screw cap (1), the second screw cap (2) is positioned on the other side of the first screw cap (1), a plurality of convex clamping blocks (6) are annularly distributed at the bottom of the screw cap II (2), a concave clamping groove (7) matched with the convex clamping block (6) is arranged on the surface of the first screw cap (1) at a position corresponding to the convex clamping block, a flexible limiting block (8) is fixed on one side of the convex clamping block (6), a limiting groove (9) is formed in the position, corresponding to the flexible limiting block (8), in the first screw cap (1), an installation cavity (11) is formed in the screw rod (10), and a square movable rod (12) is arranged in the installation cavity (11).

2. A round head self-tapping screw as defined in claim 1, wherein: the flexible limiting block (8) is a flexible member, and an inner cavity (15) is formed in the flexible limiting block (8).

3. A round head self-tapping screw as defined in claim 1, wherein: the opposite surfaces of the convex clamping block (6) and the concave clamping groove (7) are respectively paved with a magnetic attracting ring piece I (13) and a magnetic attracting ring piece II (14), and the magnetic attracting ring piece I (13) and the magnetic attracting ring piece II (14) are connected together in a magnetic attracting mode.

4. A round head self-tapping screw as defined in claim 1, wherein: the one end integrated into one piece of square movable rod (12) has first fixed block (16), the inside of lead screw (10) is provided with second fixed block (17), second fixed block (17) with lead screw (10) formula structure as an organic whole.

5. A round head self-tapping screw as defined in claim 1, wherein: and a plurality of connecting strips (3) are annularly distributed on the side wall of the second screw cap (2).

6. A round head self-tapping screw as defined in claim 1, wherein: the screw rod (10) back of the body is of a tip structure at one end of the first screw cap (1), and the first screw cap (1) and the second screw cap (2) are respectively provided with a first screw hole (4) and a second screw hole (5) on the surface.