CN219204305U

CN219204305U - Hollow cup motor

Info

Publication number: CN219204305U
Application number: CN202223083934.5U
Authority: CN
Inventors: 王飞
Original assignee: Shantou Huili Electronic Technology Co ltd
Current assignee: Shantou Huili Electronic Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-06-16
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses a hollow cup motor, which comprises a shell, wherein an end cover assembly is covered at an opening at the rear end of the shell, a cavity is formed in the shell, a supporting seat extending into the cavity is arranged on the inner wall of the front end of the shell, grooves are formed in the centers of two ends of the supporting seat, a first oil bearing and a second oil bearing are respectively arranged in the two grooves, through holes penetrate through the grooves, rotating shafts are respectively arranged on the first oil bearing and the second oil bearing, magnetic steel is fixedly arranged on the outer surface of the supporting seat, a rotor frame is coaxially arranged at the position, far away from the through holes, of the rotating shafts, a plurality of reversing pieces are arranged at the other end of the rotor frame in an array manner, a coil is sleeved on the outer side surface of the rotor frame, a plurality of taps are arranged at one end of the coil, the taps are electrically connected with the reversing pieces, arc extinguishing capacitors are arranged between the adjacent two reversing pieces, and the service life of noble metal can be prolonged and the efficiency of the motor can be improved by increasing the arc extinguishing capacitors between the reversing pieces of each phase.

Description

Hollow cup motor

Technical Field

The utility model relates to the field of motors, in particular to a hollow cup motor.

Background

The development of the motor is from the work efficiency of an iron core motor to only 40% -50%, and the motor efficiency can reach more than 80%. And the service life is increased by tens of times. Therefore, the conversion of electric energy into kinetic energy is also widely used. With the continuous development and progress of technology. The service life of the hollow cup in many electronic technology fields and consumer fields such as daily household appliances cannot meet the market demand, however, the field of the market general is still unacceptable in view of the excessive cost of brushless, and the brush hollow cup is currently preferred. When the traditional hollow cup brush motor runs, the electric brush is used for powering on the coil through the commutator, and the coil generates a magnetic field to interact with the magnet so as to realize rotary motion. The coil moves to cut magnetic force lines when rotating in the magnetic field of the magnet, and the motor is a generator to generate reverse current and back electromotive force. The external current of the trend motor rotation collides with the reverse current generated when the coil moves, so that high-voltage arc is generated, thereby causing energy loss, generating heat to reduce the motor efficiency, and enabling the electric brush and the commutator to generate larger heat, so that the commutating noble metal material is degenerated and burnt. Thereby greatly reducing the service life.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the hollow cup motor, wherein an arc extinguishing capacitor is added between commutating pieces of each phase, the capacitor can absorb and store reverse current and then discharge the current in a changed direction, so that the arc extinguishing effect is realized, the service life of noble metal is prolonged, and the efficiency of the motor is improved.

In order to solve the technical problems, the utility model provides the following technical scheme: the casing front end is provided with the through-hole rear end and is provided with the opening, casing rear end opening part lid is equipped with the end cover subassembly, the inside cavity that forms of casing, casing front end inner wall is provided with the supporting seat that extends to in the cavity, the both ends center department of supporting seat is seted up flutedly, two be provided with first oiliness bearing and second oiliness bearing in the recess respectively, run through casing front end through-hole, first oiliness bearing and second oiliness bearing are provided with the pivot, pivot one end extends to the end cover subassembly, and the other end extends to outside the casing, the surface fixed mounting of supporting seat has the magnet steel, the pivot is kept away from the coaxial rotor frame that is provided with of through-hole end, the rotor frame is discoid, the rotor frame is kept away from the open end and is provided with the lug, the rotor frame other end array is provided with a plurality of commutator segment, a plurality of the commutator segment is L type, a plurality of commutator segment one end is being provided with being close to casing open end pivot surface, a plurality of the commutator segment other end is the equidistance setting up at the rotor frame and is close to the open end terminal surface with the pivot, rotor frame outside face cover is equipped with the coil, the coil is the form of taking a percentage, a percentage of coil form, a pair of adjacent coil form, a pair is provided with electric connection between a plurality of commutator segments, a pair of electric connection is provided with the commutator segment.

Preferably, the rotor frame is provided with a plurality of dogs protruding towards the end cover direction away from the annular array of lug end face, a plurality of form the interval between the dogs, the rotor frame is provided with the capacitor plate away from the lug end, the annular array of capacitor plate is provided with a plurality of bonding pad, a plurality of electric connection has arc extinguishing capacitor between the bonding pad, a plurality of the bonding pad correspond respectively set up in the interval that forms between the dogs, a plurality of the tap corresponds the welding with the front end of commutator bar on the bonding pad.

Preferably, the number of the stop blocks, the bonding pads, the commutating segments and the taps are the same.

Preferably, the rotor frame, the protruding block and the stop block are of an integrated structure.

Preferably, the end cap assembly includes an end cap and a brush disposed inside the end cap.

Preferably, the end cover is in interference connection with the casing.

Compared with the prior art, the utility model has the following beneficial effects:

1. the arc extinguishing capacitor is added between the commutating segments of each phase, the capacitor can absorb and store reverse current, and then the current direction is changed to discharge, so that the arc extinguishing effect is realized, the service life of noble metal is prolonged, and the efficiency of the motor is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the housing and first and second oil-impregnated bearings according to the present utility model;

FIG. 3 is a schematic view of the structure of the rotor frame, capacitor plates and coils of the present utility model;

FIG. 4 is a schematic diagram of a coil structure according to the present utility model;

wherein: 1. a housing; 2. a support base; 3. a first oil-impregnated bearing; 4. a second oil-impregnated bearing; 5. a rotating shaft; 6. magnetic steel; 7. a rotor frame; 8. a bump; 9. a reversing sheet; 10. a coil; 11. a tap; 12. arc extinguishing capacitor; 13. a stop block; 14. a capacitive plate; 15. a bonding pad; 16. an end cap; 17. a brush.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples:

as shown in fig. 1-4, the utility model provides a hollow cup motor, which comprises a casing, the casing front end is provided with a through hole, the rear end is provided with an opening, the opening of the casing rear end is covered with an end cover assembly, a cavity is formed inside the casing, the inner wall of the casing front end is provided with a supporting seat extending into the cavity, the centers of two ends of the supporting seat are provided with grooves, a first oil bearing and a second oil bearing are respectively arranged in the grooves, the grooves penetrate through the through hole of the casing front end, the first oil bearing and the second oil bearing are provided with rotating shafts, one end of each rotating shaft extends to the end cover assembly, the other end extends out of the casing, the outer surface of the supporting seat is fixedly provided with magnetic steel, the rotating shafts are coaxially provided with a rotor frame far away from the through hole end, the rotor frame is in a disc shape, the rotor frame is provided with a bump far away from the opening end, the other end of the rotor frame is provided with a plurality of reversing pieces in an array, the reversing pieces are arranged on the outer surface of the opening end of the casing, the rotating shafts are respectively, the other end of the reversing pieces are vertically arranged in the annular frame is in an L shape, the annular frame is close to the outer side of the coil frame, the coil is provided with a plurality of winding caps, the coil is arranged between the two coil caps, and is electrically connected with the coil caps, and the coil caps are arranged at the outer sides.

Through increasing arc extinguishing capacitor between the commutator segments of every looks, the electric capacity can be with reverse current absorption storage, changes the current direction again and discharges the use to realize the arc extinguishing effect, extension noble metal life and improve the efficiency of motor.

As shown in fig. 3, this embodiment also discloses that the rotor frame is far away from the annular array of lug end terminal surface and is provided with a plurality of dogs protruding to the end cover direction, a plurality of form the interval between the dogs, the rotor frame is far away from the lug end and is provided with the electric capacity board, electric connection has a plurality of bonding pad between the electric capacity board, a plurality of the bonding pad correspond respectively set up in the interval that forms between the dog, a plurality of the tap corresponds with the front end of commutator bar and welds on the bonding pad.

As shown in fig. 3, this embodiment also discloses that the number of the stop blocks, the bonding pads, the commutating segments and the taps are the same.

As shown in fig. 1 and 3, this embodiment also discloses an integrally formed structure of the rotor frame, the bump and the stopper.

As shown in fig. 1, this embodiment also discloses that the end cap assembly includes an end cap and a brush, and the brush is disposed inside the end cap.

As shown in fig. 1, this embodiment also discloses that the end cover is in interference connection with the casing.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hollow cup motor, includes casing, its characterized in that: the utility model discloses a reversing device, including casing (1), support base (2), rotor frame (7) are provided with through-hole, casing (1) front end is provided with the through-hole rear end and is provided with the opening, casing (1) rear end opening part lid is equipped with the end cover subassembly, the inside cavity that forms of casing (1), casing (1) front end inner wall is provided with supporting seat (2) that extend to in the cavity, recess is offered at the both ends center department of supporting seat (2), two be provided with first oiliness bearing (3) and second oiliness bearing (4) in the recess respectively, run through casing (1) front end through-hole, first oiliness bearing (3) and second oiliness bearing (4) are provided with pivot (5), pivot (5) one end extends to the end cover subassembly, and the other end extends to outside casing (1), the surface fixed mounting of supporting seat (2) has magnet steel (6), pivot (5) keep away from through-hole end coaxial rotor frame (7), rotor frame (7) are in the opening end is provided with lug (8) in keeping away from, rotor frame (7) other end is provided with 9) a plurality of commutating pieces (9) are in array (9) are close to a plurality of opening end (9), the rotor frame (7) is close to the end face of the opening end of the machine shell (1), a coil (10) is sleeved on the outer side face of the rotor frame (7), the coil (10) is barrel-shaped, a plurality of taps (11) are arranged at one end of the coil (10), the taps (11) are electrically connected with the commutating pieces (9), and arc extinguishing capacitors (12) are arranged between two adjacent commutating pieces (9).

2. A coreless motor as claimed in claim 1, wherein: the rotor frame (7) is kept away from lug (8) terminal surface ring array and is provided with a plurality of dog (13) towards end cover subassembly direction convex, a plurality of form the interval between dog (13), lug (8) end is kept away from to rotor frame (7) is provided with capacitor plate (14), capacitor plate (14) ring array is provided with a plurality of pad (15), a plurality of electric connection has arc extinguishing capacitor (12) between pad (15), a plurality of pad (15) correspond respectively set up in the interval that forms between dog (13), a plurality of tap (11) correspond on welding pad (15) with the front end of commutator bar (9).

3. A coreless motor as claimed in claim 2, wherein: the number of the stop blocks (13), the bonding pads (15), the commutating segments (9) and the taps (11) are the same.

4. A coreless motor as claimed in claim 1, wherein: the rotor frame (7), the lug (8) and the stop block (13) are of an integrated structure.

5. A coreless motor as claimed in claim 1, wherein: the end cover assembly comprises an end cover (16) and a brush (17), wherein the brush (17) is arranged on the inner side of the end cover (16).

6. A coreless motor as claimed in claim 1, wherein: the end cover (16) is in interference connection with the shell (1).