CN212063656U - Motor rotor - Google Patents

Abstract

The utility model discloses an electric motor rotor, which comprises a rotor, rotor one end is provided with the fan, rotor one end is provided with the commutator, be provided with the pivot in the middle of the rotor, the pivot both ends are provided with the bearing, be provided with the packing ring in the middle of bearing and the commutator, the packing ring is followed the pivot and is rotated and provide dustproof heat dissipation function for the rotor, through set up the packing ring in the middle of commutator and bearing, be provided with the gasket through in the middle of packing ring and commutator, it is protruding through setting up the gear on the packing ring, through the adjusting washer material, overall structure is simple, the heat-sinking capability of rotor has been improved greatly, make electric.

Description

Motor rotor

Technical Field

The utility model belongs to the technical field of the electrical machinery part and specifically relates to an electric motor rotor is related to.

Background

After the power is switched on, a rotor in the motor rotates on a rotating shaft rapidly, the surface temperature of the commutator can be increased due to friction between the commutator and the carbon brush and electric sparks generated in the reversing process, in addition, dust and particles around the commutator and the carbon brush can be sucked from an air inlet in the working process of the cutting machine, the particles can damage enameled wires of the commutator and the rotor, the phenomenon that the rotor is burnt due to short circuit or open circuit failure of the motor is directly caused, how to design a functional component which has a simple structure, prevents dust from entering the rotor to damage the commutator and the enameled wires of the motor, and meanwhile, the functional component with the functions of cooling and heat dissipation becomes the directions of a plurality of manufacturers and researchers, but no ideal product is seen on the market.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides an electric motor rotor can effectively solve the problem that above-mentioned traditional electric motor rotor exists, and overall structure is simple, and on realizing the same function, manufacturing cost is lower.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an electric motor rotor, includes the rotor, rotor one end is provided with the fan, rotor one end is provided with the commutator, be provided with the pivot in the middle of the rotor, the pivot both ends are provided with the bearing, the bearing with be provided with the packing ring in the middle of the commutator, the packing ring is followed the pivot is rotated and is done the rotor provides dustproof heat dissipation function.

In the above technical scheme, further, a gasket is arranged between the gasket and the commutator, and the gasket is attached to one side of the gasket, so that the gasket is favorably fixed to the rotor through the rotating shaft.

Among the above-mentioned technical scheme, furtherly, be provided with many places evenly distributed's gear arch on the gasket, set up like this, be favorable to the protruding gaseous flow of drive of gear increases the radiating effect.

Among the above-mentioned technical scheme, furtherly, the packing ring material is plastics, sets up like this under the prerequisite of guaranteeing the heat dissipation the packing ring quality is lighter, and insulating nature is better.

The utility model has the advantages that: through set up the packing ring in the middle of commutator and bearing, be provided with the gasket through packing ring and commutator in the middle of, protruding through setting up the gear on the packing ring, through the adjusting washer material, overall structure is simple, has improved the heat-sinking capability of rotor greatly for electric motor rotor life-span improves.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a perspective view of the present invention.

In the figure, 1 is a fan, 2 is a rotor, 3 is a commutator, 4 is a gasket, 5 is a gasket, 6 is a bearing, 7 is a gear bulge, and 8 is a rotating shaft.

Detailed Description

Referring to fig. 1-3, an electric motor rotor includes rotor 2, 2 one end of rotor is provided with fan 1, 2 one end of rotor is provided with commutator 3, be provided with pivot 8 in the middle of rotor 2, 8 both ends of pivot are provided with bearing 6, bearing 6 with be provided with packing ring 5 in the middle of commutator 3, packing ring 5 follows pivot 8 rotates and for rotor 2 provides dustproof heat dissipation function.

A gasket 4 is arranged between the gasket 5 and the commutator 3, and a plurality of gear protrusions 7 are uniformly distributed on the gasket 5.

In order to realize the heat dissipation effect for the whole motor, the fan 1 is arranged outside the rotor 2, and the fan 1 rotates to enable the whole motor to be cooled through air flow which drives the whole body.

After the motor is electrified, the rotor 2 cuts a rotating magnetic field to form electromagnetic torque and enable the rotating shaft 8 to rotate in the bearing, the direction of the electromagnetic torque is guaranteed to be constant through the commutator 3, the gasket 5 rotates along with the rotating shaft 8, the gear protrusions 7 on the gasket 5 can drive airflow to flow in partial movement to achieve the cooling effect on the commutator 3, the gasket 4 arranged on one side of the gasket 5 is in contact with the gasket 5, the gasket 5 is attached to the commutator 3, the gasket 5 shields the side face of the commutator 3, and dust is thrown away along the radial direction through certain air flow and centrifugal effect provided during rotation, so that the inside of the commutator 3 and the rotor 2 is not damaged.

The utility model discloses a working process: the motor circular telegram makes rotor 2 cuts rotating magnetic field and makes pivot 8 rotates, in the pivot 8 packing ring 5 rotates simultaneously, simultaneously on the packing ring 5 the protruding 7 of gear rotate the back and drive the air flow around and realize right commutator 3's cooling, packing ring 5 covers commutator 3's a side surface makes the dust can not pass through commutator 3 enters into inside rotor 2, realizes dustproof effect.

The above is only an embodiment of the present invention, and is not a limitation to the present invention in any form, and the present invention does not depart from the technical solution of the present invention, and the simple modification, equivalent change or modification made by the present invention all fall into the protection scope of the present invention.

Claims (3)

1. An electric machine rotor comprising a rotor (2), characterized in that: rotor (2) one end is provided with fan (1), rotor (2) one end is provided with commutator (3), be provided with pivot (8) in the middle of rotor (2), pivot (8) both ends are provided with bearing (6), bearing (6) with be provided with packing ring (5) in the middle of commutator (3), be provided with many places evenly distributed's gear arch (7) on packing ring (5), packing ring (5) are followed pivot (8) are rotated and are done rotor (2) provide dustproof heat dissipation function.

2. An electric machine rotor as claimed in claim 1, characterized in that: the gasket (4) is arranged between the gasket (5) and the commutator (3), and the gasket (4) is attached to one side of the gasket (5).

3. An electric machine rotor as claimed in claim 1, characterized in that: the gasket (5) is made of plastic.

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