CN216199711U - Half-tail concave-end half-tooth cross flat-head step screw - Google Patents

Abstract

The utility model relates to the technical field of fasteners, in particular to a half-tail concave end half-tooth-shaped cross flat head step screw which comprises a step screw main body, wherein the step screw main body comprises a step column, a half-tooth screw rod and an end head, an insertion hole is formed in the end head, the insertion hole extends into the half-tooth screw rod, a side groove is formed in the half-tooth screw rod, a locking block is placed in the side groove, a locking structure is sleeved on the outer side of the end head, the locking structure comprises a shielding cap and an insertion column, and the insertion column extends into the insertion hole. This flat first step screw of half tooth type cross of half tail concave end, the locking structure has been inserted through the locking piece that sets up in step screw main part and on step screw main part for step screw main part is in the back of screwing, will insert the post and insert and can make to insert the post and outwards push the locking piece in the jack, thereby make the tool bit portion of locking piece insert the inner wall of screw on, make step screw main part fixed in the screw, reach the purpose of preventing once more dismantling.

Description

Half-tail concave-end half-tooth cross flat-head step screw

Technical Field

The utility model relates to the technical field of fasteners, in particular to a half-tail concave end half-tooth cross flat head step screw.

Background

The step screw is a screw with two or more steps and is a nonstandard fastener. The tail end of the screw is in a hexagon shape, a cross shape, a straight shape and the like, and the screw rod of the screw is in a full-tooth screw rod type, a half-tooth screw rod type and the like. When a step screw is used for fastening parts needing to be prevented from being disassembled again, the screw at the parts needing to be prevented from being disassembled again can still be disassembled due to the fact that the screw can be conveniently disassembled, and therefore the half-tail concave end half-tooth-shaped cross flat-head step screw is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a half-tail concave end half-tooth cross flat head step screw to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a flat first step screw of half tooth type cross of half tail concave end, includes step screw main part, step screw main part includes step post, integrated into one piece is in half tooth screw rod and the integrated into one piece of step post head end are in the terminal end of step post, the tip position department of end has seted up the jack, the end of jack stretches into the inside of half tooth screw rod, the side channel has been seted up on the surface of half tooth screw rod, the spread groove has been seted up to the tank bottom department of side channel, the locking piece has been placed in the side channel, the outside end of locking piece is equipped with the tool bit, the medial extremity of locking piece is equipped with the sloping bench, the sloping bench stretches into in the jack, the outside cover of end is equipped with the locking structure, the locking structure is in including hiding cap and integrated into one piece the inserted column of cap bottom, the inserted column stretches into in the jack.

Preferably, the end part of the end head is provided with a cross groove in a cross structure, and the jack is communicated with the cross groove.

Preferably, the length of the connecting groove is smaller than that of the side groove, and the size of the locking block is matched with that of the side groove.

Preferably, the bottom corner of the locking block is provided with a butt opening, and the inclined table penetrates through the connecting groove.

Preferably, the inserting column is matched with the inserting hole in size, a pointed end is integrally formed at the bottom end of the inserting column, and the top surface of the inclined table is in an inclined plane shape.

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

this flat first step screw of half tooth type cross of half tail concave end, the locking structure has been inserted through the locking piece that sets up in step screw main part and on step screw main part for step screw main part is in the back of screwing, will insert the post and insert and can make to insert the post and outwards push the locking piece in the jack, thereby make the tool bit portion of locking piece insert the inner wall of screw on, make step screw main part fixed in the screw, reach the purpose of preventing once more dismantling.

Drawings

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

FIG. 2 is another overall structure diagram of the present invention;

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

FIG. 4 is a schematic structural view of a locking block of the present invention;

FIG. 5 is a schematic view of the latch block of the present invention in an extended position.

The meaning of each reference number in the figures is:

1. a stepped screw body; 11. a step post; 12. a half-thread screw; 13. a tip; 131. a cross groove; 14. a jack; 15. a side groove; 151. connecting grooves; 2. a locking block; 21. a cutter head; 22. a sloping table; 23. abutting the mouth; 3. a locking structure; 31. a shielding cap; 32. inserting a column; 321. a pointed tip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a flat first step screw of half tooth type cross of half tail concave end, includes step screw main part 1, and step screw main part 1 includes step post 11, integrated into one piece at the half tooth screw rod 12 and the end 13 of integrated into one piece at step post 11 tail end of 11 head ends of step post, and the tip position department of end 13 offers the cross recess 131 that is the cruciform structure, facilitates the instrument of using the cross head to install step screw main part 1.

In this embodiment, jack 14 has been seted up to the tip position department of end 13, the end of jack 14 stretches into the inside of half tooth screw rod 12, side slot 15 has been seted up on the surface of half tooth screw rod 12, connecting groove 151 has been seted up to the tank bottom department of side slot 15, locking block 2 has been placed in the side slot 15, the outside end of locking block 2 is equipped with tool bit 21, the medial extremity of locking block 2 is equipped with ramp 22, ramp 22 stretches into in the jack 14, the outside cover of end 13 is equipped with locking structure 3, locking structure 3 is including hiding cap 31 and integrated into one piece hiding post 32 of inserting of cap 31 bottom, it stretches into in the jack 14 to insert post 32. The inserting column 32 can be screwed into the inserting hole 14 by aligning the end part of the inserting column 32 with the inserting hole 14 after the step screw main body 1 is screwed in the screw hole, until the inserting column 32 is completely inserted into the inserting hole 14, the shielding cap 31 covers the outer side of the end head 13, and external tools are prevented from directly acting on the step screw main body 1.

Specifically, the insertion hole 14 communicates with the cross groove 131, so that the stud 32 can be inserted into the insertion hole 14 from the outside of the step screw body 1, thereby mounting the locking structure 3 to the step screw body 1.

Further, the length of the connecting groove 151 is smaller than that of the side groove 15, and the size of the locking block 2 is matched with that of the side groove 15, so that the locking block 2 can be prevented from falling into the jack 14 integrally.

In addition, the bottom corner of locking piece 2 has been seted up and has been supported mouthful 23, and the sloping platform 22 passes in following the spread groove 151, and when the sloping platform 22 stretched into in the jack 14, supported mouthful 23 can with the edge butt of spread groove 151 to reach the spacing purpose of locking piece 2. Insert post 32 and jack 14's size looks adaptation, the bottom integrated into one piece of post 32 has tip 321, the top surface of sloping platform 22 is the inclined plane form, when inserting post 32 and inserting in jack 14, tip 321 at first can touch with the inclined plane of sloping platform 22, along with inserting the continuation of post 32 and inserting, insert post 32 and outwards push locking block 2 gradually, make the tool bit 21 part of locking block 2 can insert in the inner wall of screw, reach the purpose of locking step screw main part 1, prevent that step screw main part 1 from being dismantled once more.

When the half-tail-concave-end half-tooth-type cross flat-head step screw is used, firstly, the locking block 2 is pressed to enable the locking block 2 to be retracted into the side groove 15 and then the step screw main body 1 is screwed into the screw hole and screwed, then the inserting column 32 is inserted into the inserting hole 14 after the tip 321 on the inserting column 32 is aligned with the inserting hole 14, and finally, along with the insertion of the inserting column 32, the tip 321 firstly touches the inclined plane of the inclined table 22, then the inserting column 32 gradually pushes the locking block 2 outwards, so that the cutter head 21 part of the locking block 2 can be inserted into the inner wall of the screw hole, the purpose of locking the step screw main body 1 is achieved, and the step screw main body 1 is prevented from being detached again.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a flat first step screw of half tooth type cross of half tail concave end, includes step screw main part (1), step screw main part (1) is in including step post (11), integrated into one piece half tooth screw rod (12) and the integrated into one piece of step post (11) head end are in terminal end (13) of step post (11), its characterized in that: jack (14) have been seted up to the tip position department of end (13), the end of jack (14) stretches into the inside of half tooth screw rod (12), side groove (15) have been seted up on the surface of half tooth screw rod (12), spread groove (151) have been seted up to the tank bottom department of side groove (15), locking piece (2) have been placed in side groove (15), the outside end of locking piece (2) is equipped with tool bit (21), the medial extremity of locking piece (2) is equipped with ramp (22), ramp (22) stretch into in jack (14), the outside cover of end (13) is equipped with locking structure (3), locking structure (3) are in including hiding cap (31) and integrated into one piece hide post (32) of hiding cap (31) bottom, post (32) stretch into in jack (14).

2. The half-tail female-end half-tooth cross flat-head step screw according to claim 1, wherein: the end part of the end head (13) is provided with a cross groove (131) in a cross structure, and the jack (14) is communicated with the cross groove (131).

3. The half-tail female-end half-tooth cross flat-head step screw according to claim 1, wherein: the length of the connecting groove (151) is smaller than that of the side groove (15), and the size of the locking block (2) is matched with that of the side groove (15).

4. The half-tail female-end half-tooth cross flat-head step screw according to claim 1, wherein: support openings (23) are formed in the corners of the bottom ends of the locking blocks (2), and the inclined table (22) penetrates through the connecting groove (151).

5. The half-tail female-end half-tooth cross flat-head step screw according to claim 1, wherein: the plug post (32) is matched with the jack (14) in size, a pointed end (321) is integrally formed at the bottom end of the plug post (32), and the top surface of the inclined table (22) is inclined.

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