CN219623048U

CN219623048U - Countersunk head screw with thick head

Info

Publication number: CN219623048U
Application number: CN202223472016.1U
Authority: CN
Inventors: 刘超军
Original assignee: PENGCHI HARDWARE PRODUCTS (KUNSHAN) CO Ltd
Current assignee: PENGCHI HARDWARE PRODUCTS (KUNSHAN) CO Ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-09-01
Anticipated expiration: 2032-12-26

Abstract

The utility model belongs to the technical field of countersunk head screws, and discloses a countersunk head screw which comprises a screw head and a screw rod, wherein the screw head comprises a thickening head, a connecting head and a conical head, the connecting head is fixedly connected to the lower surface of the thickening head, the conical head is fixedly connected to the lower surface of the connecting head, the lower surface of the conical head is fixedly connected with the upper surface of the screw rod, a hexagonal hole is formed in the middle of the upper surface of the screw head, the thickness of the thickening head is the same as that of the protective layer, and the inner bottom surface of the hexagonal hole penetrates through the connecting head and then extends into the conical head; the minimum tension load of the screw can be better ensured through the cooperation of the structure.

Description

Countersunk head screw with thick head

Technical Field

The utility model belongs to the technical field of countersunk head screws, and particularly relates to a countersunk head screw with a thick head.

Background

In the process of installing and using the screw fastener, as part of the screw fastener is designed to be only provided with screws with thinner heads and the product is required to be flush with the end face of the installation piece according to the finished screw heads, countersunk screws are designed in the standard, but the minimum tensile load which can be born by the screw fastener is only 80% of that of a common product due to the structural defect of the product, the structure of the product is specially redesigned to solve the problems, and a countersunk screw with a thick head is provided.

Disclosure of Invention

The utility model aims at: in order to better ensure the minimum tension load of the screw, a countersunk head screw with a thick head is provided.

The technical scheme adopted by the utility model is as follows: the countersunk head screw comprises a screw head and a screw rod, wherein the screw head comprises a thickening head, a connecting head and a conical head, the connecting head is fixedly connected with the lower surface of the thickening head, the conical head is fixedly connected with the lower surface of the connecting head, the lower surface of the conical head is fixedly connected with the upper surface of the screw rod, a hexagonal hole is formed in the middle of the upper surface of the screw head, the thickness of the thickening head is the same as that of the protective layer, and the inner bottom surface of the hexagonal hole penetrates through the connecting head and then extends to the inner part of the conical head.

By adopting the technical scheme, when the screw is used, the screw can be rotated after being embedded with the hexagonal hole through the hexagonal wrench, so that the screw rod is inserted into the ground or the wall body in a rotating way.

Optionally, the outer surfaces of the thickened head and the connecting head are provided with protective layers.

Optionally, the protective layer includes zinc coating, acrylic acid waterproof layer and epoxy anticorrosive coating, the zinc coating sets up the protective layer is close to thickening head with connect one side of head, acrylic acid waterproof layer scribbles zinc coating is kept away from one side of thickening head, epoxy anticorrosive coating scribbles acrylic acid waterproof layer is kept away from one side of zinc coating.

Through adopting above-mentioned technical scheme, on the other hand, the thickening head can play better protective effect to the screw head with the inoxidizing coating of connecting the head surface, wherein, the galvanized coating can play antirust effect to the surface of thickening head and connecting the head, acrylic acid waterproof layer has excellent waterproof nature, ageing-resistant, cohesiveness and film forming ability, can improve waterproof and corrosion-resistant effect to thickening head and connecting the head, epoxy anticorrosive coating has good water resistance and wearability, further improves thickening head and connecting the waterproof and wearability of head, and then improves the life of screw.

Optionally, the diameter of the connecting head is between 9.7mm and 9.9mm, and the diameter of the screw is between 4.3mm and 4.5 mm.

By adopting the technical scheme, the diameters of the connecting head and the screw rod are the diameter range of the common countersunk head screw.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

in the utility model, when the screw is used, the screw can be rotated after being embedded with the hexagonal hole through the hexagonal wrench so as to be inserted into the ground or the wall body in a rotating way, compared with the traditional countersunk head screw, the screw has the advantages that the thickened head part is added on the surface of the connecting head part, the thickness of the screw head part is increased on the basis of keeping the original countersunk head structure, the thickness of the hexagonal hole away from the screw rod is thickened, the strength of the screw head part is further increased, and the design keeps the use characteristic of being capable of being in a limited space and can better ensure the minimum tension load of the screw.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is an enlarged view of the portion A of FIG. 1 in accordance with the present utility model;

FIG. 3 is a top view of the present utility model;

fig. 4 is a schematic structural view of a protective layer in the present utility model.

The marks in the figure: 1-screw head, 2-screw rod, 11-thickening head, 12-connecting head, 13-conical head, 14-protective layer, 15-hexagonal hole, 141-galvanized layer, 142-acrylic waterproof layer and 143-epoxy anticorrosive layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A countersunk head screw according to an embodiment of the present utility model will be described in detail with reference to fig. 1 to 4.

Examples:

the embodiment of the utility model discloses a countersunk head screw with a thick head. Referring to fig. 1 to 3, a countersunk head screw with a thick head comprises a screw head 1 and a screw rod 2, wherein the diameter of the screw rod 2 is between 4.3mm and 4.5mm, a hexagonal hole 15 is formed in the middle of the upper surface of the screw head 1, and when the screw is used, the screw can be rotated after being embedded with the hexagonal hole 15 through a hexagonal wrench, so that the screw rod 2 can be rotationally inserted into the ground or a wall.

Referring to fig. 1 to 3, the screw head 1 includes a thickened head 11, a connection head 12 and a tapered head 13, the diameter of the connection head 12 is between 9.7mm and 9.9mm, the thickness of the thickened head 11 is the same as that of the protective layer 14, the connection head 12 is fixedly connected to the lower surface of the thickened head 11, the tapered head 13 is fixedly connected to the lower surface of the connection head 12, the lower surface of the tapered head 13 is fixedly connected to the upper surface of the screw rod 2, and compared with the conventional countersunk screw, the surface of the connection head 12 is added with the thickened head 11, and the thickness of the screw head 1 is increased on the basis of keeping the original countersunk structure; the inner bottom surface of the hexagonal hole 15 passes through the connecting head 12 and then extends to the inside of the conical head 13, the thickness of the hexagonal hole 15 away from the screw rod 2 is thickened, and further the strength of the screw head 1 is increased.

Referring to fig. 1 and 4, the outer surfaces of the thickened head 11 and the connecting head 12 are provided with a protective layer 14, the protective layer 14 comprises a galvanized layer 141, an acrylic waterproof layer 142 and an epoxy anti-corrosion layer 143, the galvanized layer 141 is arranged on one side surface of the protective layer 14, which is close to the thickened head 11 and the connecting head 12, and the galvanized layer 141 can play an anti-rust role on the outer surfaces of the thickened head 11 and the connecting head 12; the acrylic acid waterproof layer 142 is coated on one side surface of the galvanized layer 141 far away from the thickened head 11, and the acrylic acid waterproof layer 142 has excellent waterproof property, aging resistance, cohesiveness and film forming property, so that the waterproof and corrosion-resistant effects on the thickened head 11 and the connecting head 12 can be improved; the epoxy anticorrosive layer 143 is painted on one side surface of the acrylic waterproof layer 142 far away from the galvanized layer 141, the epoxy anticorrosive layer 143 has good water resistance and wear resistance, the waterproof and wear resistance effects of the thickened head 11 and the connecting head 12 are further improved, and the service life of the screw is further prolonged.

The implementation principle of the countersunk head screw with the thick head provided by the embodiment of the utility model is as follows:

when the screw is used, the screw can be rotated after being embedded with the hexagonal hole 15 through the hexagonal wrench, so that the screw rod 2 is inserted into the ground or a wall body in a rotating mode, compared with a traditional countersunk head screw, the screw has the advantages that the thickened head 11 is added on the surface of the connecting head 12, the thickness of the screw head 1 is increased on the basis of keeping the original countersunk head structure, the thickness of the hexagonal hole 15 away from the screw rod 2 is thickened, the strength of the screw head 1 is further increased, the use characteristics of the screw can be kept in a limited space, and the minimum tension load of the screw can be well ensured.

On the other hand, the protective layer 14 on the outer surfaces of the thickened head 11 and the connecting head 12 can have a good protective effect on the screw head 1, wherein the galvanized layer 141 can play a role in rust prevention on the outer surfaces of the thickened head 11 and the connecting head 12, the acrylic waterproof layer 142 has excellent waterproof property, aging resistance, adhesion property and film forming property, waterproof and corrosion-resistant effects on the thickened head 11 and the connecting head 12 can be improved, the epoxy anti-corrosion layer 143 has good waterproof property and wear resistance, waterproof and wear-resistant effects on the thickened head 11 and the connecting head 12 are further improved, and the service life of the screw is further prolonged.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. Countersunk head screw of thick head, including screw head (1) and screw rod (2), its characterized in that: screw head (1) are including thickening head (11), connection head (12) and toper head (13), connection head (12) fixed connection is in the lower surface of thickening head (11), toper head (13) fixed connection is in the lower surface of connection head (12), the lower surface of toper head (13) with the last fixed surface of screw rod (2) is connected, hexagonal hole (15) have been seted up at the upper surface middle part of screw head (1), the thickness of thickening head (11) is the same with the thickness of inoxidizing coating (14), the interior bottom surface of hexagonal hole (15) passes behind connection head (12) extends to the inside of toper head (13).

2. A thick head counter screw as claimed in claim 1, wherein: the outer surfaces of the thickened head part (11) and the connecting head part (12) are provided with protective layers (14).

3. A thick head counter screw as claimed in claim 2, wherein: the protective layer (14) comprises a galvanized layer (141), an acrylic acid waterproof layer (142) and an epoxy anti-corrosion layer (143), wherein the galvanized layer (141) is arranged on one side surface of the protective layer (14) close to the thickened head (11) and the connecting head (12), the acrylic acid waterproof layer (142) is coated on one side surface of the galvanized layer (141) away from the thickened head (11), and the epoxy anti-corrosion layer (143) is coated on one side surface of the acrylic acid waterproof layer (142) away from the galvanized layer (141).

4. A thick head counter screw as claimed in claim 1, wherein: the diameter of the connecting head (12) is between 9.7mm and 9.9mm, and the diameter of the screw (2) is between 4.3mm and 4.5 mm.