KR20050077945A - Slip ring with bearing - Google Patents

Abstract

It can be used even at high speeds, and since there is no fear of contact failure or noise, it can be used semi-permanently. Thus, a slip ring using a bearing without replacing parts is disclosed.

The slip ring includes a bearing ball, a fixed part corresponding to the outer ring of the bearing, a rotating part corresponding to the inner ring of the bearing, an external insulator for preventing electric current between the fixed part and the outside, and an electric current between the rotating part and the shaft. It consists of an internal insulator and a hollow shaft for inducing the rotation of the rotating part, wherein the fixing part, the rotating part and the bearing ball is filled with grease for electric communication to increase the electrical conductivity between the fixing part and the rotating part. It is characterized in that each is configured on the upper side of the fixed portion and the rotating portion.

Description

Slip ring with bearing}

The present invention relates to a slip ring, and more particularly, to a slip ring using a bearing to facilitate electrical transmission while having abrasion resistance for high speed rotation.

In general, the slip ring is a device that allows the electrical circuit of the fixing part and the electrical circuit of the rotating part to make electrical connection without twisting the wires during rotation. The conventional slip ring transmits a plurality of electrical signals from the fixing part to the rotating part. As for the ring, Republic of Korea Utility Model No. 202596 shown in FIG. 1 and Republic of Korea Utility Model No. 225318 shown in FIG. 2 have been proposed.

First, the Republic of Korea Utility Model Model No. 202596 shown in FIG. 1 is formed with a slot hole 111 through which a wire 151 can be wired on a side in a tubular shape, and a support flange 112 is formed at a lower portion thereof. The rod 110, and the insulating ring 120 and the grounding ring 130, which is an insulating material in the rod body 110 is fitted in the order of crossing, the insulating ring 120 is fitted to the rod 110 to be assembled. It has a hollow 121 to the center, and has a ground ring fastening portion 123 having a wire guide hole 122 that can be wired by the outer peripheral surface is formed stepped, the insulating ring 120 Ground ring 130 is assembled to the ground ring fastening portion 123 of the) is formed with a thickness of the inner diameter and height of the size corresponding to the outer diameter of the ground ring fastening portion 123, each having a microcomputer (chip) Wires 151 grounded to the control unit (PCB substrate) 2 formed by The grounding rod 100 formed of the grounding ring 130 and the grounding piece 141 which is bent in a “c” shape and have a width that can be grounded with respect to the outer circumferential surface of the grounding ring 130 of the grounding rod 100 are rods 110. ) Has a number corresponding to the number of the ground ring 130 assembled at the same time and is fixed to the insulating material 142 at the same interval as the ground ring 130 and is connected to the camera 1 in the center 161. ) Is composed of a ground terminal 140 that is grounded.

However, in the above-described registered utility model No. 202596, when the brush making contact with the slip ring is formed in the plane of the 'c' shape, when the 'c' shape is opened even a little, the contact with the slip ring is disconnected, so that the correct signal is obtained. Not only is it difficult to transmit, there is a problem of noise and contact failure caused by inflow and oxidation of foreign substances such as dust. In addition, this problem is further exacerbated during high speed rotation, and thus there is a problem of being limited to use in low speed rotation.

Republic of Korea Utility Model No. 225318 shown in Figure 2, the bent portion bent in the range of a predetermined angle on one side of both ends of the wire brush, the slip ring forms a recessed portion of the predetermined angle to slip the bent portion of the wire brush In order to increase the contact efficiency by firmly contacting the grooves of the ring, the brush combination and the slip ring combination are manufactured by insert molding, so that foreign matters such as dust, oxidation and It prevents contact failure due to flow, and is configured to enable mass production with uniform size.

However, there is a problem that the registered utility model No. 225318 as described above has a complicated structure and a higher production cost.

An object of the present invention is to provide a slip ring using a bearing so that it is resistant to abrasion even at high speed rotation and absorbs mechanical changes in the flow of the rotating body so as to ensure a continuous contact so that there is no occurrence of contact failure or noise in signal transmission. There is.

In addition, an object of the present invention is to provide a slip ring using a bearing having a simple structure of the invention and low production and provision cost.

When the slip ring using the bearing according to the present invention for achieving the above object in detail by the accompanying drawings,

The slip ring using the bearing according to the present invention includes a bearing ball, a fixing part corresponding to the outer ring of the bearing, a rotating part corresponding to the inner ring of the bearing, an external insulator for preventing the electric current between the fixing part and the outside, and the rotating part. And an internal insulator for preventing electricity between the shaft and the shaft, and a hollow shaft for inducing rotation of the rotating part, wherein the fixing part, the rotating part, and the bearing ball are provided with an electric grease for increasing electric conductivity between the fixing part and the rotating part. Is filled, and the wires are formed on the upper side of the fixing part and the rotating part, respectively.

On the other hand, since the copper foil is configured on both the fixing part and the rotating part, the electrical conductivity can be improved when the electric wire is connected to the fixing part and the rotating part.

In addition, the external insulator and the internal insulator are formed of a '' 'shape to surround the fixed and rotating parts, respectively, it is possible to increase the insulation.

Reference numeral 800, which is not described in the other drawings, is a shaft hole that makes the wire stable even at high speed by inducing the wire connected to the rotating body to be inserted into the hollow shaft and connected to the electric circuit.

Hereinafter, an embodiment of the slip ring using the bearing according to the present invention will be described in more detail by the accompanying drawings,

By rotating the shaft connected to the motor, the rotary part of the slip ring rotates separately from the fixed part by the action of the bearing. At this time, the signal input from the wire connected to the fixed part of the slip ring is output to the wire connected to the rotating part through the grease and bearing for electric transmission despite the rotation, and this signal is located at one end of the shaft and rotates simultaneously with the slip ring by the motor. Input into the electric circuit. If several slip rings are used, the respective slip rings may be used in parallel for electric input, output, and control signals, thereby enabling the operation of the electric circuit.

However, the implementation of the slip ring using the above-mentioned bearing is not limited to this embodiment, and any type of signal transmission can be performed.

The slip ring using the bearing of the present invention as described above is easy to manufacture and can greatly reduce the production cost due to the simple configuration thereof.

In addition, due to the technical characteristics of the bearing, it can be used for high-speed rotation, and there is no need to replace parts since it can be used semi-permanently without fear of contact failure or noise.

1 is a structural diagram showing a conventional slip ring

2 is a structural diagram showing another conventional slip ring

3 is a perspective view of a slip ring using a bearing according to the present invention

Figure 4 is a cross-sectional view of the slip ring using the bearing according to the present invention

5 is a perspective plan view of a slip ring using a bearing according to the present invention;

Figure 6 shows an embodiment of a slip ring using a bearing according to the present invention

<Explanation of symbols for the main parts of the drawings>

710: bearing ball 720: grease for electric communication

730: fixed portion 740: the rotating portion

750: external insulator 760: internal insulator

770: copper foil 780: hollow shaft

790: wire 800: shaft hole

Claims (3)

In a slip ring; A bearing ball, a fixing part corresponding to the outer ring of the bearing, a rotating part corresponding to the inner ring of the bearing, an external insulator for preventing an electric current between the fixing part and the outside, and an internal insulator for preventing an electric current between the rotating part and the shaft And, it is composed of a hollow shaft for inducing the rotation of the rotating part, wherein the fixed part and the rotating part and the bearing ball is filled with grease for electric communication to increase the electrical conductivity between the fixed part and the rotating part, the wires are respectively fixed and Slip ring using a bearing, characterized in that configured on the upper side of the rotating part. The slip ring using a bearing according to claim 1, wherein a copper foil is formed above the fixing part and the rotating part. The slip ring according to claim 1 or 2, wherein the outer insulator and the inner insulator are formed in a 'c' shape.