Self-locking swivel nut and connecting assembly with self-locking swivel nut
Inactive 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 self-locking screw sleeve to solve the technical problem that the self-locking screw sleeve is prone to loosening during use
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[0023] The embodiment of connection assembly in the present invention is such as Figure 1-5 shown. The connection assembly includes a body 1, a self-locking screw sleeve 2 and a bolt 3. The self-locking screw sleeve 2 includes a sleeve-shaped body 4 whose axis extends in the left-right direction. The outer peripheral surface of the sleeve-shaped body 4 is provided with external threads, and the external thread 7 of the self-locking screw sleeve is formed by rolling. The bottom of the tooth is arc-shaped, and the inner hole wall of the sleeve-shaped body 4 is tapped with internal threads, and the direction of tapping is from right to left along the axis of the sleeve-shaped body 4. The body 1 has a body threaded hole whose axis extends along the left and right directions. The internal thread of the body threaded hole matches the external thread 7 of the self-locking threaded sleeve, and the external thread of the bolt 3 cooperates with the internal thread 8 of the self-lockin...
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The invention relates to a self-locking swivel nut and a connecting assembly with the self-locking swivel nut. The connecting assembly comprises a machine body, the self-locking swivel nut and a bolt; the self-locking swivel nut comprises a sleeve-shaped body with the axis extending in the left-and-right direction, 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 self-locking 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 an external thread 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 self-locking 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 self-locking screw sleeve and a connection assembly using the self-locking 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 sc...
Claims
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IPC IPC(8): F16B37/04
CPCF16B37/042
Inventor 张玉武魏德杰王志河林万鹏王新显沈亚秋余磊磊余威黄帅李伟方崔涛杨晓明余鹏程
Owner 北京首航科学技术开发有限公司