CN216867240U

CN216867240U - Special screw for fiber gypsum board

Info

Publication number: CN216867240U
Application number: CN202220363957.2U
Authority: CN
Inventors: 高大鹏
Original assignee: Shanghai Mushi Construction System Co ltd
Current assignee: Shanghai Mushi Construction System Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-01
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a special screw for a fiber gypsum board, which comprises a screw body, wherein an end head is fixedly arranged at the end part of the screw body, screw threads are arranged on the surface of the screw body, the number of the turns of the screw threads is four, a first locking lug and a second locking lug are respectively and fixedly arranged on the surfaces of a first turn and a second turn of the four screw threads, which are close to the end head, and the first locking lug is positioned at the left side of the second locking lug. Screw body and the screw thread on its surface are when boring into the gypsum board, the less second locking lug of thickness and the great first locking lug of thickness bore into in proper order, the arcwall face of first locking lug and second locking lug carries out the friction screw in when boring into, and break away from the gyration and then contact through its plane, thereby greatly avoided the screw body to revolve round, the effect of the holding power of improvement screw has been reached, the condition of destruction has been avoided the fibre gypsum substrate when attacking into, the effect of stability improvement has been reached.

Description

Special screw for fiber gypsum board

Technical Field

The utility model relates to the technical field of architectural decoration, in particular to a special screw for a fiber gypsum board.

Background

The screw refers to a screw, and is a tool for fastening machine parts of an object step by utilizing the physics and mathematical principles of the inclined plane circular rotation and friction of the object, and the screw is a general term of a fastener and a daily oral language; metric threads are MM (millimeters) in units with a tip angle of 60 degrees, American and English threads are in inches, American threads also have a tip angle of 60 degrees, and English threads have a tip angle of 55 degrees.

The existing self-tapping screw in the market at present is small in thread pitch and large in thickness of a thread part, so that a fiber gypsum substrate is easily damaged when being attacked when used for the fiber gypsum substrate, and the screw is easy to break away from the screw due to the nail holding force of the screw.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the special screw for the fiber gypsum board, and solves the problems that the existing self-tapping screw in the market is easy to damage a fiber gypsum base material during tapping because the screw pitch is smaller and the thickness of a screw tooth part is larger, so that the screw is easy to grip and separate due to the easy breaking of the fiber gypsum base material.

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

the special screw for the fiber gypsum board comprises a screw body, wherein an end head is fixedly installed at the end part of the screw body, screw threads are arranged on the surface of the screw body, the number of the screw threads is four, a first locking convex block and a second locking convex block are fixedly installed on the surfaces of a first circle and a second circle which are close to the end head in the four screw threads respectively, and the first locking convex block is located on the left side of the second locking convex block;

the first locking convex block and the second locking convex block are both of approximately wedge-shaped block structures, the arc surfaces of the block structures are far away from one side of the thread, and the thickness of the second locking convex block is one half of that of the first locking convex block.

Preferably, the side surface of the end head is provided with a cross groove.

Preferably, the thread angle of the thread ridge is thirty degrees.

Preferably, the thread pitch of each turn of the thread ridge is ten millimeters.

Preferably, one end of the screw body, which is far away from the end head, is conical.

Preferably, the number of the first locking projections and the number of the second locking projections are four, and the four first locking projections and the four second locking projections are respectively located on the front surface and the back surface of the screw body.

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

1. this special screw of fibre gypsum board, through setting up first locking lug and second locking lug on the surface of screw thread, make screw body and the screw thread on its surface when boring into the gypsum board, the less second locking lug of thickness and the great first locking lug of thickness bore into in proper order, the arcwall face of first locking lug and second locking lug rubs the screw in when boring, and break away from the gyration and then contact through its plane, thereby greatly avoided the screw body to revolve round, the effect of the holding power of improvement screw has been reached, avoided the fibre gypsum substrate to suffer the condition of destruction when attacking into, the effect of improvement stability has been reached.

2. This special screw of fibre gypsum board is thirty degrees through the tooth head angle that sets up the screw thread for the angle is less when the screw thread tooth bores, has avoided being difficult to bore into and the condition of destroying the gypsum board easily because of screw thread thickness is big, and each circle pitch through setting up the screw thread is ten millimeters, makes the screw body increase the pitch than traditional screw, has reduced the destruction to fibre gypsum substrate, has still realized the effect that improves the installation effectiveness.

Drawings

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

FIG. 2 is a front cross-sectional view of the structure of the present invention;

fig. 3 is a side view of the structure of the present invention.

In the figure: the bolt comprises a bolt body 1, a head 2, a thread ridge 3, a first locking projection 4, a second locking projection 5 and a cross groove 6.

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.

Referring to fig. 1-3, the special fiber gypsum board screw includes a screw body 1, an end head 2 is fixedly installed at an end portion of the screw body 1, screw threads 3 are arranged on a surface of the screw body 1, four turns of the screw threads 3 are layered, a first locking projection 4 and a second locking projection 5 are respectively and fixedly installed on a first turn surface and a second turn surface of the four screw threads 3, which are close to the end head 2, and the first locking projection 4 is located on the left side of the second locking projection 5;

the first locking convex block 4 and the second locking convex block 5 are both approximately wedge-shaped block structures which are far away from the thread 3 and have arc-shaped surfaces, and the thickness of the second locking convex block 5 is one half of that of the first locking convex block 4.

In the utility model, the side surface of the end head 2 is provided with a cross-shaped groove 6.

In the present invention, the thread angle of the thread 3 is thirty degrees. The angle of the thread head of the thread 3 is thirty degrees, so that the angle is smaller when the thread 3 is drilled into the gypsum board, and the situation that the gypsum board is difficult to drill into and easy to damage due to the large thickness of the thread is avoided.

In the present invention, the pitch of each turn of the thread ridge 3 is ten millimeters. Through setting up each circle of screw pitch of screw thread 3 and being ten millimeters for screw body 1 has increased the screw pitch compared with traditional screw, has reduced the destruction to the fibre gypsum substrate, has still realized improving the effect of installation effectiveness.

In the utility model, one end of the screw body 1 far away from the end head 2 is conical.

In the utility model, the number of the first locking convex blocks 4 and the number of the second locking convex blocks 5 are four, and the four first locking convex blocks 4 and the four second locking convex blocks 5 are respectively positioned on the front surface and the back surface of the screw body 1

In conclusion, the screw special for the fiber gypsum board has the advantages that the first locking lug 4 and the second locking lug 5 are arranged on the surface of the thread 3, so that when the screw body 1 and the thread 3 on the surface of the screw body penetrate into the gypsum board, the second locking lug 5 with smaller thickness and the first locking lug 4 with larger thickness sequentially penetrate into the screw body, arc-shaped surfaces of the first locking lug 4 and the second locking lug 5 are in friction screwing in during the penetration, and are in contact with each other through the plane after being separated from the rotation, so that the screw body 1 is greatly prevented from rotating, the effect of improving the nail holding force of the screw is achieved, the condition that a fiber gypsum base material is damaged during the penetration is avoided, and the effect of improving the stability is achieved; the tooth head angle through setting up thread 3 is thirty degrees, the angle is less when making thread 3 bore into, avoided being difficult to bore into and the condition of destroying the gypsum board easily because of thread thickness is big, each circle pitch through setting up thread 3 is ten millimeters, make screw body 1 increase the pitch than traditional screw relatively, reduced the destruction to fibre gypsum substrate, the effect of installation effectiveness has still been realized improving, current self-tapping screw has been solved on the existing market because its pitch is less, and thread part thickness is great, when being used for fibre gypsum substrate to use, make fibre gypsum substrate suffer destruction when attacking easily, thereby the holding power of easy screw, the problem of the condition that breaks away from appears easily.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The special screw for the fiber gypsum board comprises a screw body (1) and is characterized in that an end head (2) is fixedly installed at the end part of the screw body (1), thread teeth (3) are arranged on the surface of the screw body (1), four circles of the thread teeth (3) are provided, a first locking convex block (4) and a second locking convex block (5) are fixedly installed on the surfaces of a first circle and a second circle of the four thread teeth (3) close to the end head (2) respectively, and the first locking convex block (4) is located on the left side of the second locking convex block (5);

the first locking convex block (4) and the second locking convex block (5) are both approximately wedge-shaped block structures which are far away from one side of the thread (3) and are arc-shaped surfaces, and the thickness of the second locking convex block (5) is one half of that of the first locking convex block (4).

2. The screw special for the fiber gypsum board as claimed in claim 1, wherein the side surface of the end head (2) is provided with a cross groove (6).

3. Screw according to claim 1, characterized in that the thread (3) has a thread angle of thirty degrees.

4. Screw according to claim 1, characterized in that the thread pitch of the thread ridge (3) is ten millimeters per turn.

5. Screw special for fiber gypsum boards according to claim 1, wherein the end of the screw body (1) far from the head (2) is conical.

6. The screw special for fiber gypsum boards as claimed in claim 1, wherein the number of the first locking projections (4) and the second locking projections (5) is four, and the four first locking projections (4) and the four second locking projections (5) are respectively positioned on the front surface and the back surface of the screw body (1).