An electrical rotary connector

Abstract

The present invention relates to an electrical rotary connector. The connector comprises a housing. A hollow shaft, of which the axis extends in a lateral direction and which is made from a metal material, is rotationally assembled in the housing; a space between the housing and the hollow shaft is divided into a left chamber and a right chamber by a metal spacer ring; a left conductive ring is disposed in an insulated manner on the hollow shaft and in the left chamber; a left electric brush in sliding contact fit with the left conductive ring is disposed on the housing and in the left chamber; a right conductive ring is disposed in the insulated manner on the hollow shaft and in the right chamber; a right electric brush in sliding contact fit with the right conductive ring is disposed on the housing and in the right chamber; a first routing channel for arranging a wire connected with the right conductive ring is formed outside the hollow shaft; and a second routing channel for arranging a wire connected with the left conductive ring is formed in an inner hole of the hollow shaft. The present invention provides the electrical rotary connector capable of simultaneously carrying out transmission of a strong electrical signal and a weak electrical signal.

Description

technical field [0001] The invention relates to an electrical rotary connector for electrical signal transmission. Background technique [0002] The electric rotary connector is an electrical connector that can transmit signals and power in a rotating state, preventing the cables that transmit signals and power between two relatively rotating parts from being twisted and damaged. Existing electric rotary connectors, such as the "hollow electric rotary connector" disclosed in Chinese patent CN101958498B, include a hollow shaft and a housing that rotate relatively. Both the hollow shaft and the housing are made of metal materials, and a conductive ring is arranged on the hollow shaft. , The casing is provided with a brush that is in sliding contact with the conductive ring. When in use, the incoming wire is connected to the electric brush, the outgoing wire is connected to the conductive ring, and the outgoing cable can go out through the inner hole of the hollow shaft. The ...

AI Technical Summary

Problems solved by technology

The existing electric rotary connector only has a good shielding effect on electromagnetic interference in the external environment. For example, by using the anti-wave sleeve of the wire jacket, the anti-wave sleeve is connected with the shell to form an electromagnetic shielding cavity, and the electric There is no corresponding shielding measure for the electromagnetic interference between the signals of the rotary connector itself. Since there is no shielding measure for the electromagnetic interference between the signals, and in some special occasions, the electric rotary connector is required to transmit strong electrical signals that are prone to electromagnetic radiation at the same time. (such as motor signals) and weak electrical signals (such as video signals) that are easily interfered, in this case, the existing electrical rotary connectors cannot meet the requirements of use

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