Hexagonal irregularly-shaped hole screw

A technology for special-shaped holes and screws, which is applied in the direction of screws, bolts, threaded fasteners, etc., and can solve problems such as incomplete forming, pressure loss, and insufficient contact area of ​​screwdrivers

Inactive Publication Date: 2009-12-02
KWANTEX RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Please refer to image 3 , because the inner hexagonal holes 13, 23 on the screw heads 11, 21 of the existing screws 1, 2 are existing standard specifications, but for a long time due to the metal flow limit and the oil coating, the molding has always been incomplete, so that the screw The screwdriver tends to swing relative to the inner hexagonal holes 13, 23, resulting in insufficient conta

Method used

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  • Hexagonal irregularly-shaped hole screw
  • Hexagonal irregularly-shaped hole screw
  • Hexagonal irregularly-shaped hole screw

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Embodiment Construction

[0016] The hexagonal special-shaped hole screw of the present invention will be described in detail below through preferred embodiments and accompanying drawings. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same numerals.

[0017] refer to Figure 4 , the first preferred embodiment of the hexagonal special-shaped hole screw 3 of the present invention is a wood screw used for locking connection between wood workpieces, and the applicator utilizes a screwdriver of a corresponding shape to screw it into the workpiece. Of course, The hexagonal special-shaped hole screw 3 can also be used for temporary insertion of the existing standard hexagonal torx screwdriver.

[0018] The hexagonal special-shaped hole screw 3 includes a screw head 30 for inserting and driving a screwdriver (not shown in the figure), and a screw rod 32 connected with the screw head 30 and forming a thread 320 on the sur...

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PUM

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Abstract

The invention relates to a hexagonal irregularly-shaped hole screw, a screw head of which is provided with a top and an insertion part concavely arranged on the top, wherein the insertion part is provided with a concave bottom conical surface, arc grooves arranged at intervals outwards extend from the bottom conical surface, an arc inward convex end is formed between every two arc grooves, the top end of each arc groove extends clockwise and is crossed with the arc inward convex end at one side to set an extending groove communicated with each arc groove, when a screw driver is inserted into the insertion part to drive the hexagonal irregularly-shaped hole screw, the contact area and the meshing degree of the insertion and the screw driver are increased by utilizing the added extending grooves so as to increase the torque force transmitted to the screw when the screw driver rotates, therefore, the screw is stably and simply rapidly screwed into a workpiece to be locked and connected in a labor-saving method.

Description

【Technical field】 [0001] The invention relates to a screw, in particular to a special-shaped hexagonal special-shaped hole screw. 【Background technique】 [0002] Currently used to lock screws between various workpieces such as wood, boards, and metal plates, such as figure 1 For existing wood screws 1 commonly used on wood, figure 2 It is the existing mechanical screw 2 commonly used on metal plates, both of which include a screw head 11, 21 for screwdriver insertion and drive, and a screw rod 15, 25 that can be screwed in the workpiece, wherein the Screw heads 11, 21 all have hexagonal holes 13, 23 (commonly known as plum blossom holes in the industry). [0003] Please refer to image 3 , because the inner hexagon holes 13, 23 on the screw heads 11, 21 of the existing screws 1, 2 are existing standard specifications, but for a long time due to the metal flow limit and the oil coating, the molding has always been incomplete, so that the screw The screwdriver tends to sw...

Claims

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Application Information

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IPC IPC(8): F16B23/00
Inventor 林昭围
Owner KWANTEX RES
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