CN214533927U

CN214533927U - Locking self-tapping screw that moves

Info

Publication number: CN214533927U
Application number: CN202120665051.1U
Authority: CN
Inventors: 黄义; 李先辉; 蒋永雄
Original assignee: Shanghai Jingyang Fastener Manufacturing Co ltd
Current assignee: Shanghai Jingyang Fastener Manufacturing Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-29
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to a locking self-tapping screw that moves belongs to the fastener field, and it includes the nail body and the head of a nail, be provided with the first recess that is used for holding the instrument on the head of a nail, the nail body is the cylindricality, the one end of nail body has most advanced, the nail body includes the screw thread section, be provided with the external screw thread on the outer wall of screw thread section, be provided with the spliced pole on the head of a nail, the nail body is kept away from most advanced one end terminal surface and has been seted up the spread groove, be provided with the internal thread on the spread groove inner wall, the internal thread is the same with the external screw thread rotation, spliced pole and spread groove threaded connection. This application has can still can carry out good fixed effect to being carried out by the fastener after the dismouting repeatedly.

Description

Locking self-tapping screw that moves

Technical Field

The application relates to the field of fastening devices, in particular to a self-tapping screw capable of preventing loosening.

Background

The self-tapping screw is a screw with a drill bit, and the self-tapping screw is pointed, so that self tapping can be realized, and common screws are flat-headed and have consistent thickness; through the construction of special electric tool, the self-tapping screw can drill, tap, fix, lock once and accomplish. The self-tapping screw is mainly used for fixing thin plates on nonmetal or softer metal without drilling bottom holes and tapping.

When the self-tapping screw is used in the woodworking field, the self-tapping screw can be directly screwed into a wooden component, and a part with a through hole and the wooden component are fastened together.

In view of the above-mentioned related arts, the inventor believes that when a part to be fixed to a wooden member by a self-tapping screw needs to be frequently disassembled and assembled, the self-tapping screw needs to be unscrewed and screwed repeatedly at the same position of the wooden member, and the path of tapping on the wooden member by the self-tapping screw each time is difficult to be kept consistent, which may cause the screw thread on the self-tapping screw to continuously cut the wood on the side wall of the screw hole, so that the wood on the side wall of the screw hole is broken and is not enough to slip under the load when the self-tapping screw is locked, and the part is loosened.

SUMMERY OF THE UTILITY MODEL

In order still to carry out good fixed to being carried out the fastener after the dismouting repeatedly, this application provides a locking tapping screw that moves.

The application provides a locking tapping screw that moves adopts following technical scheme:

the utility model provides a locking self-tapping screw that moves, includes the nail body and the nail cap, be provided with the first recess that is used for holding the instrument on the nail cap, the nail body is the cylindricality, the one end of the nail body has most advanced, the nail body includes the screw thread section, be provided with the external screw thread on the outer wall of screw thread section, be provided with the spliced pole on the nail cap, the nail body is kept away from most advanced one end terminal surface and has been seted up the spread groove, be provided with the internal thread on the spread groove inner wall, the internal thread is the same with the external screw thread turning, spliced pole and spread groove threaded connection.

Through adopting above-mentioned technical scheme, when locking, at first in with nail body screw in timber, then pass the spliced pole by the fastener to with spliced pole threaded connection in the spread groove, will be fixed on timber by the fastening piece, need not to pull down the nail body when needs are dismantled by the fastening piece, only need rotatory nail cap to make the nail cap break away from the nail body and can will be pulled down by the fastening piece.

Optionally, the nail body further comprises a compression section, the compression section is located at one end, close to the nail cap, of the thread section, and the diameter of the compression section is not smaller than the major diameter of the external thread.

Through adopting above-mentioned technical scheme, when fixing the nail body to timber in, can be at first with one section nail of nail body in the timber, then rotatory nail body can extrude the timber in drill way when compressing tightly the position that the section entered into the drill way, make fixing in timber that the nail body can be more stable.

Optionally, the compressing section is provided with a connecting hole communicated with the connecting groove along the diameter direction, a locking block is arranged in the connecting hole in a sliding and penetrating mode, the length of the locking block is larger than the radius of the compressing section, a guide inclined plane is arranged at one end, located in the connecting groove, of the locking block, and the guide inclined plane is arranged towards the opening direction of the connecting groove.

Through adopting above-mentioned technical scheme, when with spliced pole threaded connection in the connecting hole, the in-process of spliced pole downward movement can extrude the latch segment, makes the latch segment stretch into timber along the connecting hole in, further fixes the nail body, makes the nail body can not take place to rotate.

Optionally, one end of the locking block, which is far away from the guide slope, is provided with a tip portion.

Through adopting above-mentioned technical scheme, make the latch segment can be comparatively easy entering into timber.

Optionally, the outer surface of the nail cap is an arc-shaped curved surface, and the diameter of the nail cap gradually increases from the end far away from the nail body to the end close to the nail body.

Through adopting above-mentioned technical scheme, make the nail cap more slick and sly, the staff is difficult for causing the damage when touchhing the nail cap.

Optionally, one surface of the nail head close to the nail body is provided with an elastic gasket.

Through adopting above-mentioned technical scheme, can extrude the elastic gasket when locking, the tension of elastic gasket can make the spliced pole inseparabler with being connected of nail body.

Optionally, one end of the locking block, which is close to the inside of the connecting hole, is provided with a first limiting protrusion, and one end of the connecting hole, which is close to the outside of the compression section, is provided with a second limiting protrusion for blocking the first limiting protrusion.

Through adopting above-mentioned technical scheme, can avoid in the transportation latch segment to drop from the connecting hole, make the latch segment can remain in the connecting groove all the time.

Optionally, a second groove for accommodating a tool is formed in the end face of one end, close to the nail cap, of the nail body.

Through adopting above-mentioned technical scheme, when fixing the nail body to timber in, can insert the instrument in the second recess to drive the nail body and rotate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the connecting column is arranged on the nail cap, the connecting groove is formed in the nail body, when the nail cap needs to be repeatedly disassembled, the detachable locking piece only needs to be disassembled from the nail cap, the nail body does not need to be disassembled, the wood cannot be damaged, and the self-tapping nail can stably lock the locking piece on the wood;

2. through set up the latch segment in the nail body, when will nailing cap screw in nail body, can drag the latch segment into timber in order to restrict the nail body rotatory, can further fix the nail body, stability is better.

Drawings

FIG. 1 is a front view of a locking self-tapping screw according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the partial cross-sectional configuration of FIG. 1 along an axis;

FIG. 3 is a schematic structural view of the connecting stud of FIG. 2 in a state after it has been screwed into the connecting slot;

fig. 4 is a partially enlarged schematic view of a in fig. 3.

Description of reference numerals: 1. a nail cap; 2. a nail body; 21. a compacting section; 22. a threaded segment; 3. a second groove; 4. a first groove; 5. connecting grooves; 6. connecting columns; 7. an elastic pad; 8. connecting holes; 9. a locking block; 10. a guide slope; 11. a first limit protrusion; 12. and a second limiting bulge.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses locking self-tapping nail that moves, refers to fig. 1, including nail body 2 and nut 1, the axis collineation of nail body 2 and nut 1, the surface of nut 1 is the arc curved surface and nut 1 from keeping away from the one end of nail body 2 to being close to the one end diameter of nail body 2 and increasing gradually to the size, and in this embodiment, nut 1 is the spherical crown shape, and in another embodiment, nut 1 is the round platform shape.

Referring to fig. 1 and 2, the shank 2 includes a pressing section 21 and a threaded section 22, an external thread is provided on an outer wall of the threaded section 22, a diameter of the pressing section 21 is the same as a major diameter of the external thread, and in another embodiment, the diameter of the pressing section 21 is larger than the major diameter of the external thread.

The one end that the screw thread section 22 kept away from compressing tightly section 21 is provided with most advanced, when will nailing body 2 in fixed timber, can be through the hammer with in the most advanced and some screw thread section 22 nail of nailing body 2 into timber earlier, fix nail body 2 tentatively to it is more convenient when rotatory nail body 2.

The end part of the pressing section 21 close to one end of the nail cap 1 is provided with a second groove 3 for accommodating a tool, the second groove 3 is a straight groove, and in another embodiment, the second groove 3 is a cross-shaped groove. The end part of the screwdriver is inserted into the second groove 3, so that the screwdriver can drive the nail body 2 to rotate, and the nail body 2 is screwed into the wood.

The top surface of the nail cap 1 is provided with a first groove 4 for accommodating tools, a connecting column 6 is fixed on one surface of the nail cap 1 close to the nail body 2, and the connecting column 6 is collinear with the axis of the nail cap 1. The end part of one end of the pressing section 21 close to the nail cap 1 is provided with a connecting groove 5 which is in threaded connection with the connecting column 6, and the inner wall of the connecting groove 5 is provided with an internal thread. The end of the screwdriver is inserted into the first groove 4, and then the screwdriver drives the connecting column 6 to rotate, so that the connecting column 6 is screwed into the connecting groove 5.

The internal thread and the external thread have the same rotating direction, so that when the connecting column 6 is screwed, the connecting column 6 can not drive the nail body 2 to unscrew. The one side that the head of a nail 1 is close to the nail body 2 is provided with resilient means 7, and the tension of resilient means 7 can make the spliced pole 6 inseparabler with being connected of nail body 2 when locking, and difficult emergence is not hard up.

Referring to fig. 2 and 3, the compressing section 21 is provided with two connecting holes 8 along the diameter direction, the connecting holes 8 are symmetrically arranged along the axis of the compressing section 21, and in other embodiments, the number of the connecting holes 8 may be one, three or more. A locking block 9 penetrates through each connecting hole 8 in a sliding mode, each locking block 9 is a thin sheet, a guide inclined plane 10 is arranged at one end, close to the inside of each connecting groove 5, of each locking block 9, an included angle formed by each guide inclined plane 10 and the axis of each pressing section 21 is an acute angle, and each guide inclined plane 10 is arranged towards the opening direction of each connecting groove 5. When the connecting column 6 moves towards the connecting groove 5, the connecting column 6 can extrude the guide inclined surface 10 of the locking block 9, so that the locking block 9 moves towards the outside of the pressing section 21 along the connecting hole 8. The length of the locking block 9 is larger than the radius of the pressing section 21, so that the locking block 9 can extend out of the connecting hole 8 and be inserted into the wood.

Referring to fig. 4, the end of the locking block 9 away from the guiding slope 10 is provided with a tip, so that the locking block 9 can enter the wood more easily. One end of the locking block 9 close to the inside of the connecting hole 8 is fixed with a first limiting protrusion 11, and one end of the connecting hole 8 close to the outside of the pressing section 21 is provided with a second limiting protrusion 12 for blocking the first limiting protrusion 11. The second limit bulge 12 can block the first limit bulge 11 in the transportation process, so that the locking block 9 can be always kept in the connecting groove 5.

The implementation principle of the anti-loosening self-tapping screw in the embodiment of the application is as follows: when the nail is used, firstly, the tip part and a part of the threaded section 22 of the nail body 2 are hammered into the wood by using a hammer, then a screwdriver is inserted into the second groove 3, and the nail body 2 is driven to rotate by rotating the screwdriver, so that the nail body 2 completely enters the wood; then the connecting column 6 is screwed into the connecting hole 8, and the locking block 9 can be pushed to move in the moving process of the connecting column 6, so that the locking block 9 extends out of the connecting hole 8 and is inserted into wood.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a locking tapping screw that moves, includes nail body (2) and head of a nail (1), its characterized in that: be provided with first recess (4) that are used for holding the instrument on the nail cap (1), nail body (2) are the cylindricality, the one end of nail body (2) has most advanced, nail body (2) are including screw thread section (22), be provided with the external screw thread on the outer wall of screw thread section (22), be provided with spliced pole (6) on the nail cap (1), nail body (2) are kept away from most advanced one end terminal surface and have been seted up spread groove (5), be provided with the internal thread on spread groove (5) inner wall, the internal thread is the same with the external screw thread is revolved to the same, spliced pole (6) and spread groove (5) threaded connection.

2. The locking tapping screw as claimed in claim 1, wherein: the nail body (2) further comprises a pressing section (21), the pressing section (21) is located at one end, close to the nail cap (1), of the threaded section (22), and the diameter of the pressing section (21) is not smaller than the major diameter of the external thread.

3. The locking tapping screw as claimed in claim 2, wherein: compress tightly section (21) and set up connecting hole (8) with spread groove (5) intercommunication along diameter direction, it wears to be equipped with latch segment (9) to slide in connecting hole (8), the length of latch segment (9) is greater than the radius that compresses tightly section (21), the one end that latch segment (9) are located spread groove (5) sets up direction inclined plane (10), direction inclined plane (10) set up towards the opening direction of spread groove (5).

4. A locking tapping screw as claimed in claim 3, wherein: and a tip part is arranged at one end of the locking block (9) far away from the guide inclined plane (10).

5. The locking tapping screw as claimed in claim 1, wherein: the outer surface of the nail cap (1) is an arc-shaped curved surface, and the nail cap (1) gradually increases from one end far away from the nail body (2) to one end straight radial dimension close to the nail body (2).

6. The locking tapping screw as claimed in claim 1, wherein: one surface of the nail cap (1) close to the nail body (2) is provided with an elastic gasket (7).

7. The locking tapping screw as claimed in claim 4, wherein: one end of the locking block (9) close to the inside of the connecting hole (8) is provided with a first limiting protrusion (11), and one end of the connecting hole (8) close to the outside of the pressing section (21) is provided with a second limiting protrusion (12) used for blocking the first limiting protrusion (11).

8. The locking tapping screw as claimed in claim 1, wherein: and a second groove (3) for accommodating a tool is formed in the end face of one end, close to the nail cap (1), of the nail body (2).