CN210769744U

CN210769744U - Plastic quick self-tapping screw

Info

Publication number: CN210769744U
Application number: CN201921607895.XU
Authority: CN
Inventors: 李永福
Original assignee: Suzhou Dongran Precision Hardware Co ltd
Current assignee: Suzhou Dongran Precision Hardware Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-16
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a relate to self tapping screw technical field, specifically be a quick self tapping screw of plastic, including the self tapping screw body, the self tapping screw body includes screw cap, screw main part and screwhead, and the screw cap is hexagonal platelike structure, and the side of screw cap is provided with the grooving, and the integrative lower surface intermediate position that sets up at the screw cap of screw main part. The filling grooves are formed in the screw main body and the screw head, when the self-tapping screw body is rotatably installed in a plastic plate, a part of extruded rubber scraps can enter the filling grooves, excessive extrusion on the plastic plate can not be caused when the self-tapping screw body is installed, and the phenomenon that the plastic plate is cracked or the installation position is loosened due to high extrusion fatigue strength for a long time can be prevented; the utility model discloses be provided with three group's thread teeth on the external screw thread in china and foreign countries, can realize cutting rubber plate material smoothly when screw in self-tapping screw body to self-tapping screw body can both the quick rotation installation in harder plastic panel.

Description

Plastic quick self-tapping screw

Technical Field

The utility model relates to a self tapping screw technical field specifically is a quick self tapping screw of plastic.

Background

When the tapping screw is connected, a thread bottom hole is firstly made on the connected piece, and then the tapping screw is screwed into the thread bottom hole of the connected piece, so that the fixing of the connecting piece is realized, but the tapping screw still has the following defects in the actual use process:

1. in the prior art, some tapping screws are directly screwed into an object to realize fixation without manufacturing thread bottom holes in advance during installation, but the mode is simple, but a plate which is usually not very firm can generate an expansion phenomenon, so that connection is loosened for a long time, and the connected part is easy to crack due to extrusion;

2. and the self-tapping screw is often hard to screw in when screwing in harder panel, and is inconvenient to install.

Therefore, we propose a plastic quick tapping screw to solve the above drawbacks well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick self-tapping screw of plastic to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a plastic quick self-tapping screw comprises a self-tapping screw body, wherein the self-tapping screw body comprises a screw cap, a screw main body and a screw head, the screw cap is of a hexagonal plate-shaped structure, grooves are formed in the side face of the screw cap, the screw main body is integrally arranged in the middle of the lower surface of the screw cap, the screw main body is of a cylindrical structure, the screw head is of a conical structure and is integrally arranged on the lower surface of the screw main body, external threads are fixedly arranged at the outer rings of the screw main body and the screw head, each external thread comprises a middle thread tooth, an upper thread tooth and a lower thread tooth, the middle thread tooth, the upper thread tooth and the lower thread tooth are fixedly connected, the middle thread tooth is arranged below the upper thread tooth, the middle thread tooth is arranged above the lower thread tooth, and filling grooves are formed in the surfaces of the screw main body and the screw head, the filling grooves are of circular hole-shaped structures and are provided with a plurality of groups, and the groups of filling grooves are distributed at equal intervals from top to bottom.

Preferably, the grooving is a circular hole-shaped structure, and the grooving simultaneously penetrates through the front side surface and the rear side surface of the screw cap.

Preferably, the diameter of the screw head is gradually reduced from top to bottom, and the diameter of the upper end of the screw head is consistent with the diameter of the screw main body.

Preferably, the filling groove on the screw body is arranged to penetrate through the front and rear sides of the screw body, and the filling groove on the screw head is arranged to penetrate through the front and rear sides of the screw head.

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

1. the filling grooves are formed in the screw main body and the screw head, when the self-tapping screw body is rotatably installed in a plastic plate, a part of extruded rubber scraps can enter the filling grooves, excessive extrusion on the plastic plate can not be caused when the self-tapping screw body is installed, and the phenomenon that the plastic plate is cracked or the installation position is loosened due to high extrusion fatigue strength for a long time can be prevented;

2. the utility model discloses be provided with three group's thread teeth on the external screw thread in china and foreign countries, can realize cutting rubber plate material smoothly when screw in self-tapping screw body to self-tapping screw body can both the quick rotation installation in harder plastic panel.

Drawings

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

fig. 2 is a front view of the present invention;

fig. 3 is an enlarged schematic view of a structure shown in fig. 2 according to the present invention.

In the figure: the tapping screw comprises a tapping screw body 1, an external thread 2, a grooving 3, a filling groove 4, a screw cap 11, a screw main body 12, a screw head 13, a middle thread tooth 21, an upper thread tooth 22 and a lower thread tooth 23.

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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a plastic quick self-tapping screw comprises a self-tapping screw body 1, wherein the self-tapping screw body 1 comprises a screw cap 11, a screw main body 12 and a screw head 13, the screw cap 11 is of a hexagonal plate-shaped structure, a raised groove 3 is formed in the side surface of the screw cap 11, the raised groove 3 is of a round hole-shaped structure, the raised groove 3 simultaneously penetrates through the front side surface and the rear side surface of the screw cap 11, a raised rod is inserted into the raised groove 3, the screw cap 11 is convenient to rotate, and the use is convenient;

the screw main body 12 is integrally arranged in the middle of the lower surface of the screw cap 11, the screw main body 12 is of a cylindrical structure, the screw head 13 is of a conical structure and is integrally arranged on the lower surface of the screw main body 12, the diameter of the screw head 13 is gradually reduced from top to bottom, and the diameter of the upper end of the screw head 13 is consistent with that of the screw main body 12, so that the screw head 13 is conveniently matched with the external thread 2 to open a hole, and the hole is changed into a large hole from a small hole;

referring to fig. 2 to 3, the outer ring of the screw main body 12 and the outer ring of the screw head 13 are both fixedly provided with the external thread 2, the external thread 2 includes a middle thread tooth 21, an upper thread tooth 22 and a lower thread tooth 23, the middle thread tooth 21, the upper thread tooth 22 and the lower thread tooth 23 are fixedly connected, the middle thread tooth 21 is arranged below the upper thread tooth 22, the middle thread tooth 21 is arranged above the lower thread tooth 23, the surfaces of the screw main body 12 and the screw head 13 are both provided with the filling groove 4, the filling groove 4 on the screw main body 12 is simultaneously arranged through the front and rear side surfaces of the screw main body 12, the filling groove 4 on the screw head 13 is simultaneously arranged through the front and rear side surfaces of the screw head 13, plastic chips are extruded into the filling groove 4, the expansion degree of the position where the plastic plate is connected with the self-tapping screw body 1 can be reduced, the connection can be strengthened, and when the self-tapping, the filling groove 4 penetrates through the front side surface and the rear side surface of the screw head 13 at the same time, so that plastic chips in the filling groove 4 are convenient to clean and can be reused by the tapping screw body 1;

wherein, the filling grooves 4 are arranged in a circular hole structure and are distributed at equal intervals from top to bottom.

The working principle is as follows:

screw cap 11 of direct rotation self-tapping screw body 1 upper end, at first, screwhead 13 can carry out preliminary trompil to the plastic panel surface through the tip, then install in the plastic panel of screw main part 12 screw in through external screw thread 2, because external screw thread 2 comprises middle thread tooth 21, top thread tooth 22, below thread tooth 23, middle thread tooth 21, top thread tooth 22, below thread tooth 23 can be smoothly with plastic panel separate into the multiple parts and cut the screw in, supplementary screw main part 12 installs into plastic panel fast.

And through inserting the stick-up pole in rising groove 3, can realize taking out convenient to use's self-tapping screw body 1 fast.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick self-tapping screw of plastic, includes self-tapping screw body (1), its characterized in that: the self-tapping screw body (1) comprises a screw cap (11), a screw main body (12) and a screw head (13), the screw cap (11) is of a hexagonal plate-shaped structure, a groove (3) is formed in the side face of the screw cap (11), the screw main body (12) is integrally arranged in the middle of the lower surface of the screw cap (11), the screw main body (12) is of a cylindrical structure, the screw head (13) is of a conical structure and is integrally arranged on the lower surface of the screw main body (12), external threads (2) are fixedly arranged on the outer rings of the screw main body (12) and the screw head (13), each external thread (2) comprises a middle thread tooth (21), an upper thread tooth (22) and a lower thread tooth (23), the middle thread tooth (21), the upper thread tooth (22) and the lower thread tooth (23) are fixedly connected, and the middle thread tooth (21) is arranged below the upper thread tooth (22), middle thread teeth (21) are arranged above the lower thread teeth (23), the surfaces of the screw main body (12) and the screw head (13) are provided with filling grooves (4), the filling grooves (4) are of round hole-shaped structures and are provided with multiple groups, and the multiple groups of filling grooves (4) are distributed at equal intervals from top to bottom.

2. The plastic quick self-tapping screw as claimed in claim 1, wherein: the grooving (3) is of a circular hole-shaped structure, and the grooving (3) simultaneously penetrates through the front side face and the rear side face of the screw cap (11).

3. The plastic quick self-tapping screw as claimed in claim 1, wherein: the diameter of the screw head (13) is gradually reduced from top to bottom, and the diameter of the upper end of the screw head (13) is consistent with that of the screw main body (12).

4. The plastic quick self-tapping screw as claimed in claim 1, wherein: the filling groove (4) on the screw main body (12) penetrates through the front side and the rear side of the screw main body (12) at the same time, and the filling groove (4) on the screw head (13) penetrates through the front side and the rear side of the screw head (13) at the same time.