Demounting-preventing screw for electric power measurement maintenance

A power metering and anti-disassembly technology, applied in the direction of screws, nuts, bolts, etc., can solve the problems of inoperable bolts and anti-disassembly of bolts.

Inactive Publication Date: 2016-01-20
STATE GRID SHANDONG JINING CITY RENCHENG DISTRICTPOWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0026] The above patents solve the problem that the bolts cannot be operated on the same side, but they cannot solve the problem of anti-disassembly of

Method used

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  • Demounting-preventing screw for electric power measurement maintenance
  • Demounting-preventing screw for electric power measurement maintenance

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Embodiment Construction

[0048] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0049] An anti-disassembly screw for power metering maintenance, including a screw rod 1, a connecting block 2, and a screw head 3;

[0050] The outer edge of the screw 1 is provided with threads, the lower end of the screw 1 is provided with a gradually narrowing constriction 11, and the bottom surface of the screw 1 is also provided with an inner polygonal groove 12, which can be screwed into the nut through the screw 1, And because the lower end of the screw rod 1 is provided with a gradually narrowing constriction 11, the present invention can also be inserted into the fine hole to play the role of a self-tapping screw, and the inner polygonal groove 12 ca...

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Abstract

The invention relates to a demounting-preventing screw for electric power measurement maintenance. The demounting-preventing screw comprises a screw rod, a connecting block and a screw head. A thread is arranged on the outer edge of the screw rod. The lower end of the screw rod is provided with a gradually-narrowed shrinking part. An inner polygonal groove is formed in the lower bottom face of the screw rod. The connecting block is in the shape of a pillar with two narrow ends and a wide middle. The connecting block is arranged at the tail portion of the screw rod. Annular reinforcing ribs are distributed on the outer wall of the connecting block in the length direction of the connecting block at equal intervals and are distributed on the outer edge of the connecting block in the circumferential direction. The screw head is arranged at the upper end of the connecting block and is in the shape of a regular polygon. A cross-shaped groove is formed in the upper end face of the screw head, and a through hole penetrating the screw head is formed in the side face of the screw head. The demounting-preventing screw can have the demounting-preventing function and can also be operated conveniently from the same side to be screwed tightly.

Description

technical field [0001] The invention relates to a tool for electric power measurement maintenance, in particular to an anti-disassembly screw for electric power measurement maintenance. Background technique [0002] Screws are also called "screws" (screws), "screws" (screws). In fact, the screw is a general term, and the screw and the screw rod are different from each other. Screws are generally called wood screws; they are the kind with a pointed tip at the front end and have a large pitch, and are generally used to fasten wooden and plastic parts. The screw rod is a machine screw (machine screw), which is the kind with a flat head at the front end. The pitch is small and uniform. It is generally used to fasten metal and machine parts. [0003] The screw is a tool for tightening the parts of the object step by step by using the physical and mathematical principles of the oblique circular rotation and friction of the object. Screw is a general term for fasteners, a daily ...

Claims

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Application Information

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IPC IPC(8): F16B35/00F16B41/00
Inventor 刘广建王峰杨旭王宇
Owner STATE GRID SHANDONG JINING CITY RENCHENG DISTRICTPOWER SUPPLY
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