阅读说明：本技术 一种适用于高湿环境下的大口径分体式导电滑环 (Large-caliber split conductive slip ring suitable for high-humidity environment ) 是由 邵小华 吕斌 周平涛 徐星星 严枫 王智勇 于 2019-10-23 设计创作，主要内容包括：本发明公开了一种适用于高湿环境下的大口径分体式导电滑环,由中心轴、组合支架、环片、绝缘垫片、压板和电刷组件组成；绝缘垫片为POM(聚甲醛)制成内高外低的台阶式垫片,并在绝缘垫片的内圈铣有一个过线缺口。环片套在绝缘垫片的凸起部位的外圆上,相邻两个绝缘垫片的过线缺口错开180°。本发明是通过导电滑环结构上的设计来保证爬电距离以及定子和转子间的间隙来控制防止湿气的扩散,通过高湿环境下环间的高绝缘电阻值,保证传输信号的完整性及稳定性,本发明实现了大口径分体式导电滑环在高湿环境下的应用,为电旋转信号传输领域提供了极大的便利,解决了高湿环境下的大口径分体式导电滑环在360°转动下传输信号的完整性及稳定性的问题。(The invention discloses a large-caliber split conductive slip ring suitable for a high-humidity environment, which consists of a central shaft, a combined bracket, a ring piece, an insulating gasket, a pressing plate and an electric brush assembly, wherein the central shaft is fixedly connected with the combined bracket; the insulating gasket is a step gasket with a high inner part and a low outer part made of POM (polyformaldehyde), and a wire passing notch is milled on the inner ring of the insulating gasket. The ring piece is sleeved on the excircle of the convex part of the insulating gasket, and the wire passing gaps of two adjacent insulating gaskets are staggered by 180 degrees. The invention ensures creepage distance and clearance between the stator and the rotor to control and prevent moisture from diffusing through the structural design of the conductive slip ring, and ensures the integrity and stability of transmission signals through the high insulation resistance value between rings in a high-humidity environment.)

1. A large-caliber split conductive slip ring suitable for a high-humidity environment comprises a central shaft, a combined support, a ring piece, an insulating gasket, a pressing plate and an electric brush assembly; the method is characterized in that: the insulating gasket is a step type gasket with a high inner part and a low outer part made of polyformaldehyde, and a wire passing notch is milled in the inner ring of the insulating gasket.

2. The split type conductive slip ring with large caliber suitable for high humidity environment as claimed in claim 1, wherein: in the assembling process of the ring piece, the ring piece is sleeved on the excircle of the convex part of the insulating gasket, the lead of the ring piece passes through the wire passing gap of the insulating gasket, and the wire passing gaps of two adjacent insulating gaskets are staggered by 180 degrees.

3. The split conductive slip ring with a large caliber suitable for high humidity environment as claimed in claim 1 or 2, wherein: the step thickness of the insulating gasket is 2 mm.

Technical Field

The invention relates to the technical field of signal transmission of conductive slip rings, in particular to a large-caliber split conductive slip ring suitable for signal and power transmission in a high-humidity environment.

Background

The conductive slip ring belongs to the application range of electric contact sliding connection, is also called slip ring, also called rotary joint, rotary electric interface, slip ring, reflux ring, coil, commutator and commutator, and is a precision power transmission device for realizing image, data signal and power transmission of two relative rotating mechanisms. It is particularly suitable for use in locations where unlimited continuous rotation is required, while power or data is transmitted from a fixed position to a rotating position.

The conventional conductive slip ring working in a high-humidity environment belongs to an integrated slip ring, and generally, the working reliability in the high-humidity environment is ensured by sealing a ring body. The split slip ring cannot realize external sealing, so that the insulation resistance between rings is easily reduced in a high-humidity environment, and signal interference between the rings is caused; if the signal is serious, short circuit between rings can be caused, so that the signal is seriously distorted, and the whole machine fails.

Disclosure of Invention

The invention aims to provide a large-caliber split conductive slip ring which ensures the integrity and stability of signal and power transmission by ensuring the insulation resistance between rings in a high-humidity environment and provides great convenience for the field of electric rotating signal transmission.

The purpose of the invention is realized as follows:

a large-caliber split conductive slip ring suitable for a high-humidity environment comprises a central shaft, a combined support, a ring piece, an insulating gasket, a pressing plate and an electric brush assembly; the method is characterized in that: the insulating gasket is a step gasket with a high inner part and a low outer part made of POM (polyformaldehyde), and a wire passing notch is milled on the inner ring of the insulating gasket.

In the assembling process of the ring piece, the ring piece is sleeved on the excircle of the convex part of the insulating gasket, the lead of the ring piece passes through the wire passing gap of the insulating gasket, and the wire passing gaps of two adjacent insulating gaskets are staggered by 180 degrees.

The step thickness of the insulating gasket is 2 mm.

The invention ensures creepage distance and clearance between the stator and the rotor to control and prevent moisture diffusion through the design of the conductive slip ring structure, and ensures the integrity and stability of transmission signals through high insulation resistance value between rings in high humidity environment. Therefore, the invention has the following advantages:

1. because the traditional insulating gasket is designed in a step manner and is ensured by the raised part of the insulating gasket, the inner ring of the metal ring piece can be ensured not to cause the reduction of the insulation resistance between the inner ring and the ring due to overlarge moisture, the insulation resistance under a high-humidity environment is ensured, and the signal interference between the rings can be better isolated;

2. the insulating gaskets are designed through the wire passing notches of the inner rings, the welding points of the ring pieces and the conducting wires are fixed, the wire passing notches of two adjacent insulating gaskets in a positive phase are staggered by 180 degrees in the assembling process of the ring pieces, the creepage distance of the welding points between the adjacent ring pieces is greatly increased, the insulating resistance of the inner rings and the welding points of the ring pieces in a high-humidity environment is ensured, the short circuit problem of the welding points of the ring pieces in the high-humidity environment is avoided, the isolation between the adjacent ring pieces is greatly ensured, the signal crosstalk is prevented, and the integrity and the stability of signal and power transmission are ensured;

3. insulating pad's step thickness designs into 2mm thick, guarantees the creepage distance of adjacent ring piece through insulating pad's step thickness to with the ring piece and the combined support between the clearance come the common insulation resistance who guarantees the outer lane, and then guarantee outer lane transmission signal's under high humid environment integrality and stability.

The invention realizes the application of the large-caliber split conductive slip ring in a high-humidity environment, can be used in a severe working environment with the environmental temperature below +60 ℃ and the humidity below 95 percent, provides great convenience for the field of electric rotating signal transmission, and solves the problems of the integrity and the stability of the transmission signal of the large-caliber split conductive slip ring in the high-humidity environment under the rotation of 360 degrees.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is an enlarged view of area A of FIG. 1;

FIG. 5 is a front view of an insulating spacer;

FIG. 6 is a left side view of FIG. 5;

FIG. 7 is an enlarged view of area B of FIG. 6;

in the figure: 1 is a central shaft; 2 is a combined bracket; 3 is a ring sheet; 4 is an insulating gasket; 5 is a pressing plate; 6 is an electric brush component; 7 is a wire passing gap of the insulating gasket; 8 is the convex part of the insulating gasket; and 9 is a step of the insulating gasket.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following examples and drawings.

A large-caliber split conductive slip ring suitable for a high-humidity environment is composed of a central shaft 1, a combined support 2, a ring piece 3, an insulating gasket 4, a pressing plate 5 and an electric brush assembly 6; wherein the insulating gasket 4 is a step gasket with a high inner part and a low outer part made of POM (polyoxymethylene), and a wire passing notch 7 is milled on the inner ring of the insulating gasket 4.

In the assembling process of the ring pieces, the ring pieces 3 are sleeved on the excircle of the convex part 8 of the insulating gasket 4, the lead of the ring pieces 3 passes through the wire passing notches 7 of the insulating gasket 4, and the wire passing notches 7 of two adjacent insulating gaskets 4 are staggered by 180 degrees.

The total thickness of the insulating spacer 4 is 5mm, the thickness of the protruding portion 8 is 3mm, and the thickness of the step 9 is 2 mm.

The diameter of the excircle of the step 7 of the insulating gasket 4 is 1mm larger than that of the excircle of the ring sheet 3; the unilateral clearance design between 3 excircles of ring piece and sectional shelf 2 is 1mm, guarantees the insulation resistance between the outer lane of each ring piece 3 from increasing the creepage distance on the excircle of each ring piece 3 and reducing the moisture diffusion, guarantees signal, power transmission's integrality and stability.