CN213461449U - Integrated machine shell motor with carbon brush circumferentially chamfered - Google Patents

Abstract

Integrated casing motor of carbon brush circumference chamfer is applied to all kinds of brush motors, and it includes: the motor rotor coil (1), the commutator segment (2), the carbon brush house (3), the carbon brush (4), the carbon brush circumference chamfer (5), the rotor shaft (6), the stator magnetic field solenoid (7), the non-magnetic conductive solenoid fixing frame (8) and the magnetic pole casing (9), the carbon brush circumference chamfer (5) is adopted at the contact position of the carbon brush (4) and the commutator segment (2), the contact position adopts the carbon brush circumference chamfer or reduces the width of the carbon brush (4) and the carbon brush house (3) so as to reduce the effective working width of the carbon brush (4), the output power and the efficiency are improved, the commutator segment (2) is reduced to enter resistance and commutation sparks during separation, the magnetic pole casing (9) is a part formed by the integrated motor casing and the magnetic pole block, and the stator magnetic field (7) is fixed in the magnetic pole casing (9) through the non-magnetic conductive solenoid fixing frame (8).

Description

Integrated machine shell motor with carbon brush circumferentially chamfered

Technical Field

The invention discloses an integrated shell motor with a circumferential chamfer of a carbon brush, which consists of a motor rotor coil, a commutator sheet, a carbon brush house, a carbon brush, a circumferential chamfer of the carbon brush, a rotor shaft, a stator magnetic field coil, a non-magnetic-conductive coil fixing frame and a magnetic pole shell, belongs to motor products and is applied to various brushed motors.

Background

The motors are the foundation and important parts of industry, the alternating current motor and the direct current motor are distinguished from the power supply, the brush motor and the brushless motor can be distinguished from the existence of the carbon brush in the motor, and the performance of the motor is related to various products and the national industrialization level.

The brushless motor has the advantages of multiple control components, simple structure, reliable performance, large starting torque and the like, is widely applied to various industries along with the development of industrial history and is continuously improved.

The market has the requirement for the existing direct current motors to develop towards the directions of small size, high efficiency, large power volume and the like, but a plurality of direct current motors in China are introduced from abroad and developed according to related experiences, and deep research is needed when the direct current motors are applied to specific products, for example, an automobile electric winch motor is formed by an automobile starting motor, and an 8.7 mm wide carbon brush is matched with a conventional 23-slot motor, but the motors such as 27-slot motors, 29-slot motors and the like are developed in the domestic market for improving the power, and the 8.7 mm wide carbon brush is still adopted and is in direct-angle contact with a commutator segment, so that the abrasion is fast, and the performance improvement is limited.

Generally, motor stator parts on the market at present fix a magnetic pole block and a stator magnetic field coil in a motor shell through screws, so that the motor shell is high in manufacturing cost and needs special equipment during assembly.

Disclosure of Invention

In order to solve the problems that the existing direct current motor carbon brush is fast in abrasion, the motor performance and manufacturability are improved, and the cost is reduced, the integrated shell motor with the circumferential chamfer angle of the carbon brush is adopted at the contact part of the motor carbon brush of the multi-slot motor rotor coil and the commutator segment, but the contact part is not limited to the circumferential chamfer angle, the circumferential chamfer angle of the carbon brush is adopted at the contact part, or the widths of the carbon brush and the carbon brush house are reduced, so that the effective working width of the carbon brush is reduced, the number of the motor rotor coils which effectively work is increased, and the motor efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the integrated machine shell motor with the carbon brush circumferential chamfer comprises a motor rotor coil, a commutator sheet, a carbon brush house, a carbon brush, the carbon brush circumferential chamfer, a rotor shaft, a stator magnetic field coil, a non-magnetic conductive coil fixing frame and a magnetic pole machine shell, wherein the contact part of the carbon brush and the commutator sheet adopts the carbon brush circumferential chamfer, but not only the carbon brush circumferential chamfer, but also the contact part adopts the carbon brush circumferential chamfer or reduces the width of the carbon brush and the carbon brush house to realize the reduction of the effective working width of the carbon brush, thus, the short circuit number of the rotor coil of each pole motor can be reduced, the number of the rotor coils of the motor participating in the effective work of the motor is increased every time, under the same output torque, the working current of the motor is reduced, the output power and the efficiency are improved, meanwhile, the commutating sparks when the commutator sheet enters the resistance and is separated are reduced, and the magnetic pole machine shell is a part integrating, the stator magnetic field coil is fixed in the magnetic pole shell through the non-magnetic conductive coil fixing frame, so that the structure of a stator component of the motor is greatly simplified, the assembly manufacturability is improved, and the cost is reduced.

The invention has the beneficial effects that: under the condition of the same motor structure and the same overall dimension, the existing universal components are applied to the direct current motors of the automobile winch and the vehicle-mounted inflator pump, so that the power and the efficiency of the motors and the assembly manufacturability are improved.

Drawings

FIG. 1 is a diagrammatic elevational view of the assembly of the present invention;

labeled as: 1 motor rotor coil; 2 a commutator segment; 3, carbon brush house; 4, carbon brushes; 5, chamfering the circumference of the carbon brush; 6 a rotor shaft; 7 stator field coils; 8 non-magnetically conductive wire pack fixing frame; 9 magnetic pole machine shell.

Detailed Description

The invention discloses an integrated shell motor with a carbon brush circumferentially chamfered, as shown in the attached figure 1, which comprises: the motor rotor coil (1), the commutator sheet (2), the carbon brush house (3), the carbon brush (4), the carbon brush circumferential chamfer (5), the rotor shaft (6), the stator magnetic field coil (7), the non-magnetic conductive coil fixing frame (8) and the magnetic pole casing (9), the carbon brush circumferential chamfer (5) is adopted at the contact position of the carbon brush (4) and the commutator sheet (2), but not only limited to the chamfer of the carbon brush circumferential chamfer (5), but also the carbon brush circumferential chamfer or the width of the carbon brush (4) and the carbon brush house (3) is adopted at the contact position to reduce the effective working width of the carbon brush (4), thus the short circuit number of the rotor coil (1) of each pole motor can be reduced, the rotor coils (1) of the motor participating in the effective work of the motor each time are increased, the working current of the motor is reduced and the output power and efficiency are improved under the same output torque, meanwhile, because of the circumferential chamfer or radius of the circumferential chamfer (5) of the carbon brush, the entry resistance and the commutation spark when the commutator segment (2) is separated are reduced, the magnetic pole casing (9) is a part integrating the motor casing and the magnetic pole block, the screw connection is not needed any more, the size precision is high, the stator magnetic field coil (7) is fixed in the magnetic pole casing (9) through the non-magnetic-conductive coil fixing frame (8), the structure of the motor stator component is greatly simplified, the assembly manufacturability is improved, and the cost is reduced, the motor rotor coil (1) and the commutator segment (2) are arranged on the rotor shaft (6) to form the motor rotor, for the direct current motor of the automobile winch and the vehicle-mounted inflator pump, because the use frequency is low, the use time is short, the chamfer or the contact part of the circumferential chamfer (5) of the carbon brush adopts the circumferential chamfer or the width reduction of the carbon brush (4) and the carbon brush house (3) to realize the reduction of the effective working width of the carbon brush (4, the motor performance is obviously improved.

The integrated shell motor with the carbon brush circumferentially chamfered is arranged on the same 29-slot automobile winch motor, the outer diameter is 114 mm, the rotor stack height is 66 mm, and the comparison test data of output 10 nm torque show that: the improved chamfering machine is characterized in that a carbon brush with the width of 8.7 mm before improvement is applied, the working current is 281 amperes, the output power is 1761 watts and the efficiency is 57.9%, an effective working carbon brush with the width of 7.8 mm after improvement is applied, the working current is 256 amperes, the output power is 1939 watts and the efficiency is 68.4%, the efficiency is improved by 10.5%, the improved structure is simple, the practicability is high, and the effect is obvious.

The invention discloses an integrated shell motor with a circumferential chamfer angle of a carbon brush, which is applied to an automobile inflator pump motor with a 33-slot wire insertion, wherein the outer diameter is 80 mm, the rotor stack height is 78 mm, the width of the carbon brush (4) and the width of a carbon brush house (3) are reduced to realize the effective working width of the carbon brush (4) with the width of 3.8 mm, and the test data of the output torque of 1.0 nm shows that: the working current is 45 amperes, the output power is 426 watts, the efficiency is 77%, compared with a conventional 6-millimeter wide carbon brush, the performance is obviously improved, the requirement of the plug wire motor for long-time working is met, the motor rotor manufacturing process is simplified, and the production cost is reduced.

Claims (2)

1. Integrated casing motor of carbon brush circumference chamfer, it includes: electric motor rotor coil (1), commutator piece (2), carbon brush room (3), carbon brush (4), carbon brush circumference chamfer (5), rotor shaft (6), stator magnetic field solenoid (7), non-magnetic conductive coil mount (8) and magnetic pole casing (9), characterized by: the contact part of the carbon brush (4) and the commutator segment (2) adopts a carbon brush circumferential chamfer (5).

2. The integrated shell motor with the carbon brush circumferentially chamfered as claimed in claim 1, wherein: the magnetic pole casing (9) is a part integrating the motor casing and the magnetic pole block, and the stator magnetic field coil (7) is fixed in the magnetic pole casing (9) through the non-magnetic conductive coil fixing frame (8).

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