CN210629316U

CN210629316U - Bearing with direct current motor commutator function

Info

Publication number: CN210629316U
Application number: CN201922286062.4U
Authority: CN
Inventors: 伊双清; 孙荣敏
Original assignee: Lushan College of Guangxi University of Science and Technology
Current assignee: Lushan College of Guangxi University of Science and Technology
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-05-26
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a bearing that possesses function of DC motor commutator, its characterized in that is equipped with four rotor commutator copper sheets on the bearing rotating part that pottery or nylon are made, is equipped with two fixed copper sheets on the bearing fixed part that pottery or nylon are made, and the steel roller is assembled to the gap between bearing rotating part and the bearing fixed part, and the steel roller both sides are equipped with the roller frame that nylon is made, all has a perk part in the middle of four rotor commutator copper sheets and two fixed copper sheets to guarantee with contact between the roller that contacts, the beneficial effects of the utility model are that make commutator and bearing on traditional DC brush motor unite two into one, both simplified motor mechanism, make the sliding friction between traditional commutator and the commutator copper sheet become rolling friction again, reduced the wearing and tearing of commutator and commutator copper sheet, prolonged the life of commutator, the replacement frequency of the commutation copper sheet is reduced.

Description

Bearing with direct current motor commutator function

Technical Field

The utility model relates to a bearing that possesses DC motor commutator function, this bearing adopt the better pottery of insulating nature or nylon materials preparation to form, utilize the periodic contact between built-in copper sheet and the bearing metal roller, make the bearing have the function of DC motor commutator, this bearing changes ordinary carbon brush commutator sliding friction's mode into rolling friction's mode, when uniting two into one commutator and bearing, has reduced the friction loss of commutator, the utility model relates to a technical field such as materials science, mechanical design, circuit design.

Background

The direct current brush motor has been widely applied to various fields such as industry, life and the like due to simple structure, low manufacturing cost and reliable performance. Compared with a direct current brushless motor, the brush motor does not need a controller, a magnetic field position detection device such as a Hall element does not need to be installed in the motor, and the stable work of the motor can be realized only by using an electric brush. However, the direct current brush motor also has some technical weaknesses, especially the high-speed sliding friction between the brushes or the commutator, and the wear speed of the brushes is high. The carbon brush is adopted, so that the service life of the electric brush is prolonged to a certain extent. The wear rate of the carbon brush is still fast. Generally speaking, a dc brushed motor requires a year or half year time to replace a new brush.

Disclosure of Invention

In order to overcome the above-mentioned defect of traditional brush, the utility model discloses a with brush and bearing unite two into one's thinking, change the sliding friction between traditional brush and the commutator into the rolling friction between bearing roller and the switching-over copper sheet. The commutator and the bearing are combined into a whole, and meanwhile, the friction loss of the commutator is reduced.

The technical scheme of the utility model is that: a bearing with a direct current motor commutator function is characterized in that a bearing rotating part (5) made of ceramic or nylon is provided with a rotor commutator copper sheet (1), a rotor commutator copper sheet (2), a rotor commutator copper sheet (3) and a rotor commutator copper sheet (4), a bearing fixing part (6) made of ceramic or nylon is provided with a first fixing copper sheet (7) and a second fixing copper sheet (8), a steel roller (9) is assembled in a gap between the bearing rotating part (5) and the bearing fixing part (6), and two sides of the steel roller (9) are provided with roller frames (10) made of nylon; preferably, the bearing with the function of the direct current motor commutator is characterized in that a piece of tilting part is arranged between the rotor commutation copper sheet (1), the rotor commutation copper sheet (2), the rotor commutation copper sheet (3), the rotor commutation copper sheet (4), the first fixed copper sheet (7) and the second fixed copper sheet (8), so that good contact with the contacted roller (9) is ensured.

The beneficial effects of the utility model are that make commutator and bearing on traditional direct current brush motor unite two into one, both simplified motor mechanism, make the sliding friction between traditional commutator and the switching-over copper sheet become rolling friction again, reduced the wearing and tearing of commutator and switching-over copper sheet, prolonged the life of commutator, reduced the change frequency of switching-over copper sheet.

Drawings

The invention is further described with reference to the following figures and examples.

FIG. 1 is a view showing the effect of a bearing application scenario with the function of a DC motor commutator

FIG. 2 is a schematic diagram of a bearing with a DC motor commutator function

FIG. 3 is a process diagram of the installation of the reversing copper sheet on the bearing rotating component

FIG. 4 is an effect diagram of the reversing copper sheet installed on the bearing rotating part

FIG. 5 is a view showing the process of mounting the copper fixing plate on the bearing fixing member

FIG. 6 is a diagram showing the effect of the copper fixing piece mounted on the bearing fixing member

FIG. 7 is a view showing an assembling process of a bearing fixing member and a bearing rotating member in a bearing

FIG. 8 is a view showing a positional relationship between a bearing fixing member and a bearing rotating member in a bearing

FIG. 9 is a view showing a process of mounting a roller on a bearing

FIG. 10 is an effect diagram of the rollers uniformly arranged on the bearing

FIG. 11 shows an assembly process of the roller frame

FIG. 12 is a view showing the overall effect of the assembled bearing of the roller frame

In the figure 1, a first part coil of A-1.A phase winding, a second part coil of A-2.A phase winding, a first part coil of B-1.B phase winding and a second part coil of B-2.B phase winding are arranged in a coil winding box; in fig. 2, 1 is a rotor commutation copper sheet, 2 is a rotor commutation copper sheet, 3 is a rotor commutation copper sheet, and 4 is a rotor commutation copper sheet; FIG. 3, 5 bearing rotating member; 6 in FIG. 5, a bearing fixing part and 7, a first copper sheet are fixed; 8 in FIG. 6, fixing the second copper sheet; 9 in fig. 9 rollers; fig. 11 shows 10 the roller frame.

Detailed Description

Firstly, a rotor reversing copper sheet (1), a rotor reversing copper sheet (2), a rotor reversing copper sheet (3) and a rotor reversing copper sheet (4) are assembled on a bearing rotating part (5) according to the mode of a figure 3, then a fixed copper sheet I (7) and a fixed copper sheet II (8) are assembled on a bearing fixing part (6) according to the mode of a figure 5, and finally a roller (9) and a roller frame (10) are assembled in a gap between the bearing rotating part (5) and the bearing fixing part (6).

The basic operation principle is shown in fig. 1 and 2. And mounting the assembled bearing on a rotor rotating shaft. Respectively welding the end point of the first part coil (A-1) of the phase A winding and the end point of the second part coil (A-2) of the phase A winding to the rotor commutation copper sheet (1) and the rotor commutation copper sheet (3); the end points of the first part coil (B-1) of the phase B winding and the second part coil (B-2) of the phase B winding are respectively welded on the rotor commutation copper sheet (2) and the rotor commutation copper sheet (4), and the side edge of the commutation copper sheet in figure 3 is preferably selected as the welding point. The working principle of the device is shown in fig. 2, and the scene using effect is shown in fig. 1.

The bearing rotating part (5) and the bearing fixing part (6) are both made of ceramic or nylon and other materials with good insulation. And the rollers (9) are made of steel. When the fixed copper sheet I (7) and the fixed copper sheet II (8) are respectively connected with the positive electrode and the negative electrode of a direct current power supply, current is respectively transmitted to the rotor commutation copper sheet (1) and the rotor commutation copper sheet (3) through the roller (9) contacted by the components, and at the moment, current is generated in the first part coil (A-1) of the phase-A winding and the second part coil (A-2) of the phase-A winding. The a-phase winding coil forms a pair of N, S poles to attract the permanent magnet S, N of fig. 1, causing the rotor to rotate. The bearing rotating part (5) also rotates synchronously with the rotor (as shown in fig. 2). When the rotor rotates 90 degrees, the rotor commutation copper sheets (1) and (3) are disconnected with a power supply, the rotor commutation copper sheets (2) and (4) are in contact with the power supply, so that currents are generated in a first part coil (B-1) of a B-phase winding and a second part coil (B-2) of the B-phase winding, and the B-phase winding forms a pair of N, S magnetic poles to attract the permanent magnet S, N in the figure 1 to enable the rotor to continue to rotate. The rotor is continuously rotated by repeating the above-mentioned steps. The basic principle of rotation of the motor is the same as that of a common brush motor, only the commutator is arranged in the bearing, and the conduction of the circuit is realized by the rolling of the bearing roller. In the whole process, the roller (9) is in rolling friction with the rotor reversing copper sheets and the fixed copper sheets, so that the abrasion of the copper sheets is greatly reduced, and the service life of the commutator is prolonged. Meanwhile, the two devices which are necessary on the brush direct current motor, namely the commutator and the bearing, are combined into a whole, so that the structure of the direct current motor is more compact.

Claims

1.A bearing with a direct current motor commutator function is characterized in that a bearing rotating part (5) made of ceramic or nylon is provided with rotor commutator copper sheets (1, 2, 3 and 4), a bearing fixing part (6) made of ceramic or nylon is provided with a first fixing copper sheet (7) and a second fixing copper sheet (8), a steel roller (9) is assembled in a gap between the bearing rotating part (5) and the bearing fixing part (6), and two sides of the steel roller (9) are provided with roller frames (10) made of nylon.

2. The bearing with the function of the direct current motor commutator according to claim 1, wherein a raised part is arranged between the rotor commutation copper sheets (1, 2, 3, 4) and the fixed copper sheets I (7) and II (8), so as to ensure good contact with the contacted roller (9).