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A detachable anti-loosening bolt or screw assembly

A technology for screw assemblies and anti-loosening bolts, applied in the directions of screws, bolts, threaded fasteners, etc., can solve the problem of inconvenient disassembly of the connection structure, and achieve the effects of simple structure, reasonable structure design, and convenient disassembly and assembly.

Inactive Publication Date: 2017-09-19
浙江东辉金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common ways to prevent bolts from loosening include: inserting keys in bolts and nuts, inserting metal rods into holes in bolts and nuts, engaging teeth of bolts and nuts or direct welding. Although the above existing technologies can effectively prevent bolts from loosening, they need to be replaced in the later period. It is inconvenient to disassemble the connecting structure

Method used

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  • A detachable anti-loosening bolt or screw assembly
  • A detachable anti-loosening bolt or screw assembly
  • A detachable anti-loosening bolt or screw assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like Figure 1-3 As shown, a detachable anti-loosening bolt assembly includes a bolt 1, a ratchet washer 2, a pressure washer nut 3 and a ratchet nut 4 that cooperate with each other; the bolt 1 includes a nut 1-1 and a screw 1-3 , the screw 1-2 is provided with several grooves 1-2 along the axial direction; The external thread of the bolt 1 is matched with the internal thread of the ratchet nut 4 .

[0021] The pawl washer 2 is annular, and a plurality of elastic pawls 2-1 are arranged on the end surface of the pawl washer 2; -2 is used to prevent the rotation of the pawl spacer 2;

[0022] The ratchet nut 4 is provided with a radial annular flange 5 at one end close to the nut 1-1 of the bolt 1; the annular flange 5 and the ratchet nut are integrally manufactured, and the outer diameter of the annular flange 5 is larger than outer diameter. The annular flange 5 is provided with a ratchet structure 5-2 on the end face close to the bolt and nut 1-1;

[0023] The qu...

Embodiment 2

[0028] like Figure 4-5 As shown, this embodiment is basically the same as Embodiment 1, the difference is:

[0029] A detachable anti-loosening bolt assembly, which includes a bolt 1, a nut 8, a pawl washer 2, and a pressure washer nut 3 that cooperate with each other; The flange 5; the nut 6 is a ratchet nut; the outer diameter of the annular flange 5 is larger than the outer diameter of the nut 6. The annular flange 5 is provided with a ratchet structure 5-2 on the end face close to the bolt and nut 1-1; There is no groove on bolt 1. The nut 8 is a common nut and is matched with the bolt 1 .

[0030] The pawl washer 2 is provided with a plurality of protrusions 2-3 on one end surface close to the fastener 7, and the protrusions 2-3 cooperate with several concave holes on the end surface of the fastener 7 to prevent the pawl. Spacer 2 turns. The surface of the fastener 7 in contact with the nut 8 is provided with an insertion groove 7-1, which has the same shape as the ...

Embodiment 3

[0032] like Image 6 As shown, this embodiment is basically the same as Embodiment 2, and the difference is:

[0033] A detachable anti-loosening screw assembly, which includes a ratchet washer 2, a pressure washer nut 3, and a screw 1a; the screw 1a is provided with an annular flange 5 at one end close to the fastener, and the fastener 7 has a thread hole.

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PUM

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Abstract

The invention discloses a detachable looseness-preventing bolt or screw assembly. The detachable looseness-preventing bolt or screw assembly comprises a bolt, a pawl gasket, a pressure pad nut and a ratchet screw nut or a ratchet screw cap, wherein the bolt, the pawl gasket, the pressure pad nut and the ratchet screw nut or the ratchet screw cap are matched with one another. A plurality of elastic pawls are arranged on the end face of the pawl gasket. The bolt comprises a screw nut and a screw rod. A radial annular flange is arranged at the end, close to a fastened object, of the ratchet screw nut or the ratchet screw cap. A ratchet structure is arranged on the end face, close to the fastened object, of the annular flange. An external thread matched with an internal thread of the pressure pad nut is arranged on the outer circle face of the annular flange. The ratchet structure on the annular flange is matched with the elastic pawls, so that the pawl gasket is prevented from rotating relative to the ratchet screw nut or the ratchet screw cap. An annular table board makes contact with the pawl gasket and abuts against the fastened piece, and thus the phenomenon that the ratchet structure suffers from pressure to be damaged is prevented. The detachable looseness-preventing bolt or screw assembly is reasonable in structural design, simple in structure, good in fastening performance and convenient to dismount and mount.

Description

technical field [0001] The present invention relates to the technical field of mechanical fasteners, in particular to a detachable anti-loosening bolt or screw assembly. Background technique [0002] Bolt or screw components are used to fasten components, and sometimes the looseness of the fastened object will have serious consequences, such as loose rail connections, which will lead to accidents such as train derailment. Therefore, preventing the loosening of connecting components has always been a subject of research. There are many reasons for the loosening of the nut and bolt. In the case of strong vibration, due to the alternating load or when the working temperature is high, the positive pressure on the friction surface of the nut decreases or disappears, so that the friction force on the friction surface is reduced or repeated many times. Repeatedly causing the vibration force along the radial direction of the nut to cause the nut to rotate, causing the nut to loosen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/24F16B39/32
CPCF16B39/24F16B39/32
Inventor 申书达
Owner 浙江东辉金属制品有限公司
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