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A locking wire contact piece for preventing screw from falling out

A contact piece and screw technology, which is applied in the field of lock-wire contact pieces to prevent screw from coming out, can solve the problems of weakened thread strength, easy slippage, insufficient number of effective turns of thread, etc., and achieve the effect of improving connection reliability and enhancing meshing strength

Active Publication Date: 2022-02-15
SHANGHAI AEROSPACE SCI & IND ELECTRIC APPLIANCE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest advantage of mechanical connection lies in the repeatability of the connection. The cable can be detachable and installed repeatedly. General tools or simple special tooling are used. Screw locking is a more commonly used method in mechanical connection. The problem is that there is no anti- Due to the shedding structure, the screws are easy to fall off or lose; due to the insufficient number of effective turns of the thread on the square nut, the thread is easy to slip, resulting in weakened thread strength, which reduces the connection reliability of the lock wire contact

Method used

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  • A locking wire contact piece for preventing screw from falling out
  • A locking wire contact piece for preventing screw from falling out
  • A locking wire contact piece for preventing screw from falling out

Examples

Experimental program
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Embodiment Construction

[0020] refer to figure 1 , figure 2 , image 3 , The present invention includes contacts 11 , pins 12 , square nuts 13 and screws 14 .

[0021] refer to figure 1 , Figure 4 , The contact piece 11 is provided with a "U"-shaped plug-in section 111 , and first pin holes 112 are provided on both sides of the plug-in section 111 .

[0022] refer to figure 1 , figure 2 , image 3 , Figure 5 , the square nut 13 is a rectangular cavity, the cavity is provided with orthogonal Cartesian coordinates X, Y and Z axes, and one end of the X axis is provided with a round hole 135, and a horizontal slot 136 is provided below the round hole 135, The other end is provided with a square hole, a thickened layer 137 is arranged above the square hole, and vertical slots 131 are arranged on both sides of the thickened layer 137; a second pin hole 134 is arranged on both sides along the Y axis intersecting with the vertical slot 131; One end of the Z axis located at the thickened layer 13...

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Abstract

The invention discloses a lock wire contact piece for preventing screw from coming out, which includes a contact piece, a pin, a square nut and a screw. In the cavity of the square nut, when the screw is loosened, the flange prevents the screw from coming out of the threaded hole of the square nut. When the screw is locked, the contact piece inserted into the square nut blocks the through hole on the square nut, and the screw Also can't escape from the through hole; the present invention adopts the thickening layer arranged on the square nut, and the threaded hole is arranged on the thickening layer, ensures the effective number of turns of the screw thread on the threaded hole, thereby strengthens the engagement of the screw and the threaded hole Strength, improving the connection reliability of the lock wire contact.

Description

technical field [0001] The invention relates to the technical field of electrical connectors, and is suitable for high-current electrical connectors with screws on site, in particular to a wire-locking contact piece that prevents screws from falling out. Background technique [0002] As a kind of connector, the power connector mainly provides a separable interface for the power transmission of the entire electromechanical system. With the increase of the system flow capacity and the development trend of structure miniaturization, the connector is required to have smaller contact resistance and more Compact structure design. [0003] At present, the connection methods of cables and contacts mainly include welding, crimping and mechanical connection. Cable connection by welding has low contact resistance and reliable connection, but it is not suitable for occasions where on-site wiring is required. The welding process has high technical requirements for workers and is prone t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/30H01R4/36H01R11/16
CPCH01R4/302H01R4/36H01R11/16
Inventor 许其峰王宏吉
Owner SHANGHAI AEROSPACE SCI & IND ELECTRIC APPLIANCE RES INST
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