CN111064059A

CN111064059A - Motor rolling commutator

Info

Publication number: CN111064059A
Application number: CN202010106392.5A
Authority: CN
Inventors: 黄国铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-04-24
Also published as: CN111725680A

Abstract

The invention relates to a motor rolling commutator, which consists of a plurality of conductive rollers and a roller retainer to realize that the contact between an electric brush and the novel commutator is rolling friction, namely the contact part between the electric brush and the commutator is relatively static without generating sliding friction, so the motor rolling commutator has small abrasion, small electric spark and low noise, and is particularly suitable for a brush motor to improve the service life, reliability, economy and efficiency of the motor. The invention has wide application prospect.

Description

Motor rolling commutator

Technical Field

The invention relates to the field of motors, in particular to a commutator device of a brush motor.

Background

The conventional motor sliding commutator has the following disadvantages: namely, because the contact surface area between the electric brush and the commutator is large, great sliding friction exists, so that the electric brush is quickly abraded, the commutator is quickly abraded, and the service life, reliability and economy of the brush motor are seriously influenced; in addition, electric sparks always exist between the electric brush and the commutator when the motor runs, so that a large amount of electric energy is lost additionally, and meanwhile, the motor is heated and generates large noise along with the generation of a large amount of heat, so that the efficiency of the brush motor is greatly reduced, and the application range of the brush motor is greatly limited.

Disclosure of Invention

The invention relates to a motor rolling commutator, the brush and commutator of the new motor commutator are rolling friction, namely the contact part between the brush and commutator is relatively static, therefore the motor rolling commutator has little abrasion and little electric spark, and is especially suitable for the brush motor to improve the service life, reliability, economy and efficiency. The invention has wide application prospect.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a motor rolling commutator, which is characterized in that: the conductor roller cage is characterized by comprising conductor rollers and a roller cage, wherein the conductor rollers are distributed in the roller cage, and the roller cage can prevent the conductor rollers from falling off and guide the conductor rollers to rotate.

Further, the motor rolling commutator further comprises a wiring terminal, one end of the wiring terminal is in contact with the end face of the conductor roller and supports the conductor roller to rotate, and the other end of the wiring terminal is a wiring terminal of a motor coil.

Further, the conductor roller and the connecting terminal are both made of conductive materials.

Further, the roller cage is a cylindrical structure, including but not limited to a plurality of structures such as a cylinder, a circular cylinder, a polygonal circular cylinder, and the like.

Compared with the prior art, the invention changes the relative motion mode between the commutator and the brush contact surface from sliding friction to rolling friction, and has the following advantages: 1. the service life of the commutator and the electric brush is prolonged. 2. The electric spark generated when the commutator contacts with the electric brush is small. 3. The electric loss and the temperature rise of the motor are reduced, and the working efficiency of the motor is improved. 4. The noise of the motor is reduced. 5. The motor is suitable for various brushed motors, the reliability of the brushed motors is improved, and the brushed motors are applied to wider occasions.

Drawings

Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic structural diagram of a motor rolling commutator of the present invention.

Fig. 2 is a schematic diagram of a motor rolling commutator of the invention.

In the figure: 1-conductor roller, 2-roller retainer, 3-wiring terminal and 4-electric brush.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "opposite", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following are examples:

as shown in fig. 1, a motor rolling commutator includes a conductor roller 1, a roller holder 2, and a connection terminal 3, a plurality of slots are provided in the roller holder 2 and are uniformly distributed in the roller holder 2, one end surface of the conductor roller 1 contacts with one end surface of the connection terminal 3 and is disposed in the slot of the roller holder 2, and the conductor roller 1 can freely rotate under the support of the two end surfaces of the roller holder 2 and the connection terminal 3.

Specifically, the roller retainer 2 is uniformly distributed with a plurality of grooves, at least two grooves are arranged, and a plurality of conductor rollers 1 and a plurality of wiring terminals 3 are correspondingly arranged in the grooves.

The working principle of the invention is as follows:

as shown in fig. 2, a power supply current flows from the brush 4, passes through the brush 4 and the terminal 3 of the conductor roller 1 in order to reach the coil end of the motor, and the current is transmitted to the opposite brush 4 through the opposite coil end of the motor, the opposite terminal 3, and the opposite conductor roller 1 to form a current-carrying loop, thereby rotating the motor. The roller retainer 2 rotates synchronously with the motor, and then the conductor roller 1 and the brush 4 contact with each other and are subjected to static friction force to roll, at the moment, the contact surfaces between the conductor roller 1 and the brush 4 are almost relatively static, the contact surfaces which move relatively occur on the two end surfaces of the conductor roller 1, the roller retainer 2 and the connecting terminal 3, the contact area of the relative movement is very small, and the sliding friction force is much smaller than that of the sliding friction force which is subjected to the larger contact area between the traditional commutator and the brush.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A motor rolling commutator, which is characterized in that: the conductor roller cage is characterized by comprising a conductor roller (1) and a roller cage (2), wherein the conductor roller (1) is arranged in the roller cage (2).

2. A motor roll commutator as claimed in claim 1, wherein: the conductor roller is characterized by further comprising a wiring terminal (3), wherein one end of the wiring terminal (3) is in end face contact with the conductor roller (1).