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Lock nut

A technology for locking nuts and nuts, applied in the direction of locking fasteners, screws, nuts, etc., can solve the problem of axial displacement of internal threads without washers and nut bodies.

Active Publication Date: 2012-05-30
哈特马特.弗莱格
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This teaching of the prior art with regard to the adjustment of the elasticity and holding force of the fastening washer cannot therefore be transferred to a lock nut of the formed type, since the plastic washer differs from the washer made of metal in terms of its elastic properties, And because the axial displacement of the inner thread of the washer and the nut body is not provided in the prior art

Method used

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Embodiment Construction

[0029] as attached Figure 1 to Figure 4 As shown, the union nut 10 according to the invention has, on one end side, a nut body 12 with a concentric neck-shaped projection 14 . The union nut 10 is designed, for example, as a hex nut made of steel and in its image 3 and Figure 4 The finished state shown has an internal thread 16 , which is referred to below as “nut thread” 16 . The inner edge 18 of the neck-shaped projection 14 is displaced outward relative to the inner diameter of the thread of the union nut 10 in order to form a socket 20 for a fastening washer 22 . The fastening washer, hereinafter also referred to simply as washer, is made of metal, preferably of elastic material, such as spring steel or spring strip steel. exist Figure 1 to Figure 4 In the embodiment shown, the washer 22 has three segment-shaped depressions, wherein the washer is fastened in the lock nut 10 in its circumferential region remaining between these depressions, as formed by the prior art o...

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Abstract

The invention provides a lock nut with a nut body which has a threaded section with an internal thread and an adjoining inner annular groove. An annular lock washer made of metal is held in the annular groove. An internal thread corresponding to the nut thread is cut into the inner circumference of the annular washer, and the internal thread of the annular washer is offset axially in relation to the nut thread by a distance which is smaller than a thread pitch of the nut thread. According to the invention, the thickness of the annular washer at the inside diameter thereof is greater than the thickness of the annular washer at the outside diameter thereof. As a result, the elasticity of the annular lock washer and the holding force of the lock nut can be adjusted.

Description

technical field [0001] The invention relates to a union nut according to the preamble of claim 1 . Such lock nuts are known, for example, from DE2638560C, DE4313809C1 and DE4313845C1. Background technique [0002] Lock nuts of the form type have a metal body with an internal thread and a neck-like projection connected to the metal body, the neck-like projection forming an annular groove held in friction engagement by a fastening washer made of metal in the annular groove. A thread corresponding to the nut thread is processed on the inner edge of the fastening washer, and the thread is axially offset relative to the nut thread by a small dimension smaller than the pitch of the nut thread. The clamping washer has a certain degree of elasticity in the axial direction, wherein the clamping force of the lock nut can be adjusted by shifting the internal thread of the washer and the lock nut maintains this set clamping force for several screw processes . [0003] This known loc...

Claims

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Application Information

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IPC IPC(8): F16B39/34F16B39/38
CPCF16B39/38F16B39/12F16B39/34
Inventor 哈特马特.弗莱格
Owner 哈特马特.弗莱格
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