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Bolt device and special spanner

A bolt and wrench head technology, applied to bolts, wrenches, screws, etc., can solve problems such as difficult opening or locking, few force points on bolt caps, poor anti-theft performance of bolt devices, etc., to achieve strong anti-deformation and anti-slip capabilities, Not easy to wear and deform, good anti-theft performance

Inactive Publication Date: 2010-01-20
宁波甬嘉变压器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the common bolt devices, such as slotted bolts, cross bolts or hexagonal bolts and nuts, etc., have the following disadvantages during use: First, the force points of the bolt caps are few. It is easy to wear, deform and slip, and the same is true for hexagonal bolts and nuts. After long-term or repeated use, the bolt caps are also prone to wear, deformation and slip. It is difficult to open or lock it even with a special wrench. The opening tools for bolts and hexagonal bolts and nuts are also relatively wide. An ordinary adjustable wrench can open almost all types of hexagonal bolts. This kind of bolt device has poor anti-theft performance.

Method used

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  • Bolt device and special spanner
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  • Bolt device and special spanner

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0020] Such as figure 1 , figure 2 , image 3 As shown, the bolt device of the present invention includes a bolt 1 and a nut 2. The bolt 1 is composed of a bolt cap 1.1 and a screw 1.2, and the screw 1.2 is provided with a full thread.

[0021] The outer circumference of the bolt cap 1.1 is provided with four pairs of radial blind holes 3 distributed along the axial direction of the screw 1.2. The four pairs of radial blind holes 3 are evenly distributed along the outer circumference of the bolt cap 1.1, that is, two adjacent pairs The included angle between the radial blind holes 3 is 90 degrees.

[0022] The outer circumference of the nut 2 is also provided with four pairs of radial blind holes 3, each pair of radial blind holes 3 is distributed along the axial direction of the threaded hole 2.1, and the four pairs of radial blind holes 3 are along the nut 2 T...

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Abstract

The invention relates to a bolt device which comprises a bolt and a nut, wherein the bolt comprises a bolt cap and a screw rod; the screw rod is provided with full threads; the outer circumference of the bolt cap is provided with at least one pair of radial blind holes distributed along the axis direction; and the outer circumference of the nut is provided with at least one pair of radial blind holes distributed along the axis direction of a thread hole of the nut. The invention has higher deformation and slide resistance, and the bolt device can be just opened by a special spanner, thereby having favorable theft preventing performance and being difficult to lose.

Description

Technical field: [0001] The invention relates to a fastener and a special tool, in particular to a bolt device and a special wrench. Background technique: [0002] At present, common bolt devices, such as flat bolts, cross bolts or hexagonal bolts and nuts, have the following shortcomings during use: first, the bolt cap has less force points, and after multiple uses, flat grooves or cross grooves It is easy to wear, deform and slip, and the same is true for hexagon bolts and nuts. After long-term or repeated use, the bolt caps are also easy to wear, deform and slip. It is difficult to open or lock them even with a special wrench. Secondly, ordinary flat bolts and crosses The opening tools for bolts and hexagonal bolts and nuts are also relatively extensive. An ordinary adjustable wrench can open almost all types of hexagonal bolts, and the anti-theft performance of this bolt device is poor. Summary of the invention: [0003] The technical problem to be solved by the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/06F16B37/00F16B23/00B25B13/48
Inventor 陆昱森陆颂荫
Owner 宁波甬嘉变压器有限公司
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