Conical surface wedge-in locking fastener

A technology of wedging and fixing, which is applied in the direction of locking fasteners, threaded fasteners, connecting components, etc., and can solve problems such as no locking, combination of nuts and fixed caps, and loosening of nuts

Pending Publication Date: 2019-04-16
TIANJIN SHENGLIDA MECHANICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, there are defects in this kind of structure. The chuck and the groove structure have no locking function. They can be screwed in and must be screwed out. They cannot firmly combine the nut and the fixed cap together. Affected by various factors, the nut will still loosen

Method used

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  • Conical surface wedge-in locking fastener
  • Conical surface wedge-in locking fastener

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Embodiment Construction

[0016] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0017] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0018] The tapered surface wedging locking fastener according to the present invention includes a screw head 1, a screw rod 2 and a nut 4, the side wall of the screw rod 2 includes at least one rectangular limiting edge 6, and the screw rod 2 is matched with An anti-rotation fixed cap 3 matched with the screw rod 2, a cylindrical cavity 7 is provided on one end surface of the fixed cap 3, and a conical tightening head 5 is provided on one end surface of the nut 4;

[0019] The minimum sectional radius corresponding to the outer wall of the conical tightening head 5 is smaller than the radius of the cylindrical cavity 7 , and the maximum sectional radius corresponding to the outer wall of...

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PUM

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Abstract

The invention provides a conical surface wedge-in locking fastener. The conical surface wedge-in locking fastener comprises a screw head, a screw rod and a nut, wherein the side wall of the screw rodcomprises at least one rectangular limiting edge, the screw rod is matched with an anti-rotation fixing cap matched with the screw rod, and a cylindrical cavity is formed in one end face of the fixingcap, and a conical ejecting head is arranged on one end face of the nut; and the radius of the minimum cross section corresponding to the outer side wall of the conical ejecting head is smaller thanthe radius of the cylindrical cavity, and the radius of the largest cross section corresponding to the outer side wall of the conical ejecting head is larger than the radius of the cylindrical cavity.When the conical surface wedge-in locking fastener is used, the side wall of the ejecting head tightly abuts against the inner wall of the cavity, the tight abutting force, on one hand, can applied force to the threads on the nut and the screw rod, the friction force among the threads is increased, on the other hand, the connection firmness of the nut and the fixing cap can be improved, and the double effect is achieved; compared with a clamping head and a groove structure in the prior art, the anti-loosening effect is better.

Description

technical field [0001] The invention relates to the field of mechanical equipment fasteners, in particular to a tapered surface wedging locking fastener. Background technique [0002] The problem of anti-loosening of bolt fasteners has always been a major problem for researchers in this field. In order to solve this problem, researchers have developed anti-loosening bolts of various structures, one of which is: cutting edges on a cylindrical screw to form a rectangular limit edge, and then setting a The fixed cap matched with the limit side, the fixed cap cannot be rotated on the screw rod, the fixed cap is slotted, the nut is screwed into the notch of the fixed cap, and the clamping head matched with the side wall of the nut and the side wall of the notch , The groove combines the nut and the fixed cap together, so as to achieve the purpose of anti-loosening. But in fact, there are defects in this kind of structure. The chuck and the groove structure have no locking funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/36F16B39/24F16B35/04
CPCF16B35/044F16B39/24F16B39/36
Inventor 杨铁良陈超王宇
Owner TIANJIN SHENGLIDA MECHANICAL EQUIP CO LTD
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