CN217355172U

CN217355172U - Anti-loosening countersunk screw with anti-slip teeth for sheet metal part

Info

Publication number: CN217355172U
Application number: CN202123289394.1U
Authority: CN
Inventors: 何崇城; 邹忠良; 王国祥; 贺建光; 李明勇
Original assignee: Zhongshan Taiming Hardware Co ltd
Current assignee: Zhongshan Taiming Hardware Co ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-09-02
Anticipated expiration: 2031-12-25

Abstract

The utility model discloses a locking countersunk screw with anti-slip teeth for sheet metal parts, which comprises a head part and a screw rod, and is characterized in that the head part and the screw rod form a locking countersunk screw body in an integrated forming mode; wherein the upper surface of the head is provided with a cross-shaped groove, and the lower surface of the head is provided with anti-skidding teeth. The utility model discloses a problem point pair screw that easy pine takes off and skid when the part thickness that fastens is less than countersunk head's height has made the improvement to the panel beating part, specifically there is anti-skidding tooth in head lower surface department design, the part that fastens can be hugged closely to the head after the equipment through the frictional force that utilizes anti-skidding tooth makes the product, the risk that takes off after having reduced the product and using a period, also can let during the assembly because of the anti-skidding tooth at head edge can closely laminate by the fastener simultaneously, the difficult problem of skidding that takes place.

Description

Anti-loosening countersunk screw with anti-slip teeth for sheet metal part

Technical Field

The utility model relates to a threaded fastener field especially relates to a take locking countersunk screw of antiskid tooth for sheet metal component.

Background

The screw is generally used for connecting and fixing parts, mostly plays the role of fastening and being convenient for installation and disassembly, the screw can be loosened by itself due to vibration and other reasons in the using process, through analyzing the stress and fastening condition of the screw thread, the main reason for causing the nut to slide is that the friction force of a joint surface is insufficient, the nut can be loosened when bearing alternating force for a long time, in addition, when the thickness of the fastened part is smaller than the height of the head of a countersunk screw, such as the connection of a hinge and a door of a case and a case body, the connection of a sheet metal outer cover of equipment and the equipment, and the like, the screw can also be loosened easily and skidded in the assembling process under the condition. Because when the countersunk head screw is screwed, the head part of the screw is not pressed against the sheet metal part by the conical surface, but the bottom of the root of the screw is extruded with the top of the threaded hole, although the screw is screwed, the sheet metal part is clamped instead of being pressed, and the sheet metal part is not screwed.

When the situation occurs in the work, the cost is increased, the installation is inconvenient, and the latter causes more workload, troubles and parts waste and brings troubles and economic loss to users when being replaced, detached or maintained, so that the anti-loosening countersunk head screw with the anti-skidding teeth for the sheet metal part is needed to be provided.

Disclosure of Invention

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

the anti-loosening countersunk screw with the anti-slip teeth for the sheet metal part comprises a head and a screw rod, and is characterized in that the head and the screw rod form an anti-loosening countersunk screw body in an integrally forming mode; the upper surface of the head is provided with a cross-shaped groove, and the lower surface of the head is provided with anti-slip teeth; wherein the screw is formed with a thread; the head part is designed in a conical shape, the conical degree is 90-92 degrees, the diameter of the top part is 10.5-10.8 mm, and the diameter of the bottom part is 5.25-5.27 mm; the major diameter of the screw thread on the screw rod is required to be between 5.82mm and 5.97 mm; the overall length of the anti-loose countersunk head screw body is between 19.71mm and 20.29 mm.

Preferably, a gap is left between the anti-slip teeth of the head and the threads of the screw.

Preferably, the depth of the cross-shaped groove is between 3mm and 3.5 mm.

The utility model has the advantages that: the utility model discloses a problem point pair screw that easily pine takes off and skid when the part thickness that fastens is less than the height of countersunk head has been improved to the correspondence in the panel beating part, specifically there is anti-skidding tooth in the design of head lower surface department, the part that fastens can be hugged closely to the head after the equipment through the frictional force that utilizes anti-skidding tooth messenger product, the risk that takes off after having reduced the product and using a period, also can let during the assembly because of the anti-skidding tooth at head edge can closely laminate by the fastener simultaneously, the difficult problem of skidding that takes place.

Drawings

Fig. 1 and fig. 2 are schematic structural diagrams of the present invention.

Fig. 3 is a top view of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement objectives and the functions of the present invention easy to understand, 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 some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 3, the anti-loosening countersunk screw with anti-slip teeth for a sheet metal part in the present embodiment adopts the following technical scheme, and includes a head and a screw, and is characterized in that the head and the screw form an anti-loosening countersunk screw body in an integrally formed manner; the upper surface of the head is provided with a cross-shaped groove, and the lower surface of the head is provided with anti-slip teeth; wherein the screw is formed with a thread; the head part is designed in a conical shape, the conical degree is 90-92 degrees, the diameter of the top part is 10.5-10.8 mm, and the diameter of the bottom part is 5.25-5.27 mm; the major diameter of the screw thread on the screw rod is required to be between 5.82mm and 5.97 mm; the overall length of the anti-loose countersunk head screw body is between 19.71mm and 20.29 mm.

Wherein a gap is reserved between the anti-slip teeth of the head and the threads of the screw.

Wherein the depth of the cross-shaped groove is between 3mm and 3.5 mm.

The present embodiment takes the above scheme as an example.

The utility model discloses a problem point pair screw that easily pine takes off and skid when the part thickness that fastens is less than the height of countersunk head has been improved to the correspondence in the panel beating part, specifically there is anti-skidding tooth in the design of head lower surface department, the part that fastens can be hugged closely to the head after the equipment through the frictional force that utilizes anti-skidding tooth messenger product, the risk that takes off after having reduced the product and using a period, also can let during the assembly because of the anti-skidding tooth at head edge can closely laminate by the fastener simultaneously, the difficult problem of skidding that takes place.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The anti-loosening countersunk head screw with the anti-skidding teeth for the sheet metal part comprises a head (1) and a screw (2), and is characterized in that the head (1) and the screw (2) form an anti-loosening countersunk head screw body in an integrally forming manner; wherein the upper surface of the head part (1) is provided with a cross-shaped groove, and the lower surface of the head part is provided with anti-skidding teeth (10); wherein the screw rod (2) is formed with threads; the head part (1) is designed in a conical shape, the conical degree is 90-92 degrees, the diameter of the top part is 10.5-10.8 mm, and the diameter of the bottom part is 5.25-5.27 mm; the major diameter of the thread on the screw rod (2) needs to be between 5.82mm and 5.97 mm; the overall length of the anti-loose countersunk head screw body is between 19.71mm and 20.29 mm.

2. Anti-loose countersunk screw with anti-slip teeth for sheet metal parts according to claim 1, characterized in that a gap is left between the anti-slip teeth (10) of the head (1) and the thread of the screw (2).

3. The anti-loose countersunk screw with anti-slip teeth for sheet metal parts according to claim 1, wherein the depth of the cross-shaped groove is between 3mm and 3.5 mm.