Swivel nut and connecting assembly with swivel nut
A technology for connecting components and screw sleeves, applied in the direction of connecting components, threaded fasteners, nuts, etc., can solve the problem that the screw sleeves are easy to loosen, and achieve the effect of large anti-loosening friction and stable force
Active Publication Date: 2016-06-08
北京首航科学技术开发有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a screw sleeve to solve the technical problem that the screw sleeve is prone to loosening during use
Method used
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[0025] The embodiment of connection assembly in the present invention is such as Figure 1-6 shown. The connection assembly includes a body 7 , a screw sleeve 12 and a bolt 6 . The screw sleeve 12 includes a sleeve-shaped body 1 whose axis extends in the left and right directions. The outer peripheral surface of the sleeve-shaped body 1 is provided with external threads. The external thread 5 of the screw sleeve is formed by rolling, and the bottom of the external thread 5 of the screw sleeve is in a circular arc. shape. The inner hole wall of the sleeve-shaped body 1 is tapped with an internal thread, and the right end of the sleeve-shaped body 1 is provided with an outer hexagonal head 2 for matching with a wrench. The screw sleeve 12 is formed by machining or casting, the screw sleeve 12 is not stretchable in the axial direction, and can bear a large axial installation moment. The outer peripheral surface of the sleeve-shaped body 1 is a connecting section 3 between the ...
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The invention relates to a swivel nut and a connecting assembly with the swivel nut. The connecting assembly comprises a machine body, the swivel nut and a bolt; the swivel nut comprises a sleeve-shaped body with the axis extending in the left-and-right direction, an external thread is arranged on the peripheral face of the sleeve-shaped body, and an internal thread is taped on the inner hole wall of the sleeve-shaped body; and the swivel nut tooth type side face, located on the same side of screw teeth of the internal thread, of the swivel nut is composed of a swivel nut tooth bottom side face located at the tooth bottom and a swivel nut tooth top side face located between the tooth top and the swivel nut tooth bottom side face, and the included angle formed between the swivel nut tooth bottom side face and the axis of the sleeve-shaped body is smaller than the included angle formed between the swivel nut tooth top side face and the axis of the sleeve-shaped body. The included angle formed between the direction of normal force generated at the contact position of the swivel nut tooth bottom side face and the tooth top of the external threads of the bolt and the axis of the sleeve-shaped body is smaller than the included angle formed between the swivel nut tooth bottom side face and the axis of the sleeve-shaped body, so that the anti-looseness friction force generated when the swivel nut is matched with the bolt is large, the swivel nut is in close fit with the corresponding bolt, and the swivel nut and the bolt are not prone to looseness.
Description
technical field [0001] The invention belongs to the technical field of fasteners, and in particular relates to a screw sleeve and a connection assembly using the screw sleeve. Background technique [0002] In the connection of various machines and parts, fasteners are required, for example, screw sleeves are a common fastener. At present, in order to enhance the threaded connection strength of the threaded hole of the body, a method of assembling a screw sleeve with internal and external threads is usually used in the threaded hole of the body. As a common screw sleeve, the wire screw sleeve is a spring-shaped threaded connection made of cold-rolled steel wire. However, there are many deficiencies in the wire threaded sleeve, which mainly include the following points: the wire threaded sleeve needs special installation tools during installation; the tooth type of the wire screwed sleeve is sharp, and it is easy to cause damage to the body during screwing into the body ;The...
Claims
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IPC IPC(8): F16B33/02F16B37/00
CPCF16B33/02F16B37/00
Inventor 张玉武魏德杰王志河林万鹏王新显沈亚秋余磊磊余威李建刚张艳雷余东海杜宏宇王亚丽陈春明
Owner 北京首航科学技术开发有限公司