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Fastener structure, bolt and nut with said structure and making method thereof

A technology for fastening parts and locking nuts, applied in the direction of threaded fasteners, locking fasteners, nuts, etc., can solve the problems of increased friction type, difficult to remove, lack of repeated use, etc., to prevent threads Relaxed, high-tightening effect

Inactive Publication Date: 2003-08-13
名川 政人 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These lock bolts are of the type that prevent looseness by forming a detent on the side surface of the thread and the support surface to deform and increase friction. Once screwed, it is difficult to remove and lacks reusability.

Method used

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  • Fastener structure, bolt and nut with said structure and making method thereof
  • Fastener structure, bolt and nut with said structure and making method thereof
  • Fastener structure, bolt and nut with said structure and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0390] The present invention will be described more specifically by way of examples below. In addition, the present invention is not limited to these Examples.

no. 1 Embodiment

[0392] Manufacture the lock nut of the first embodiment, which relates to the lock nut described by the third embodiment, wherein the pitch (P') of the main internal thread part and the secondary internal thread part is 2mm, and the main internal thread part and the secondary internal thread part The diameter (root diameter) of the thread root of the internal thread portion was 16 mm, and the axial deformation amount (deformation amount γ) of the nut elastic portion was 1.47 mm.

no. 2 Embodiment

[0394] Except that the amount of deformation γ is 1.57 mm, the same as the first embodiment, the production of the second

[0395] Example lock nut.

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PUM

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Abstract

The invention provides a structure of a loosening-stop tightening means, a loosening-stop bolt having the structure, a method for producing the same bolt, a loosening-stop nut having the structure, and a method for producing the same nut, by which the screwing force can be prevented from being lowered when an external force is applied to a member to be tightened and a screw thread, etc., and a high tightening force can be semi-permanently maintained, wherein the structure for a loosening-stop tightening means according to the invention is a structure for a loosening-stop tightening means that is screwed in or to a screw thread and tightens a member to be tightened, and the structure comprises a tightening body, a main screw thread portion formed on the tightening body, and a sub screw thread portion spaced from the main screw thread portion by an annular groove portion and formed coaxially with the main screw thread portion, whose phase with respect to the main screw thread portion is displaced by 12 DEG through 100 DEG , preferably 24 DEG through 60 DEG .

Description

technical field [0001] The present invention relates to the structure of locking bolts and locking fasteners for locking nuts. The locking fasteners are screwed with threads to fasten fastened parts and prevent external forces such as vibration from acting on the fastened parts. Parts, threading force, reduction of fastening force, and the present invention also relates to a lock nut adopting the structure and a manufacturing method thereof, as well as a lock bolt and a manufacturing method thereof. Background technique [0002] In the past, bolts and nuts were frequently used in the fastening of various parts in transportation equipment such as motor vehicles, airplanes, and trams, various industrial machinery, machines, transmission pipelines, and power transmission devices such as electric power. Fasteners, in addition, the mechanical parts used for fastening occupy a high degree of importance. [0003] However, in the past, due to the action of external forces such as v...

Claims

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Application Information

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IPC IPC(8): F16B35/04F16B37/00F16B39/282
CPCF16B37/00F16B35/041F16B39/282F16B39/30
Inventor 名川政人野田秀树
Owner 名川 政人
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