CN216929703U

CN216929703U - Treadmill motor capable of reducing electromagnetic noise

Info

Publication number: CN216929703U
Application number: CN202220630559.2U
Authority: CN
Inventors: 李兴龙; 李佳坤; 姚国平
Original assignee: Zhejiang Yingjishi Electromechanical Technology Co ltd
Current assignee: Zhejiang Yingjishi Electromechanical Technology Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-08
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a treadmill motor capable of reducing electromagnetic noise, which structurally comprises a stator and a rotor, and is characterized in that the rotor is sleeved outside the stator in a cylindrical shape, a plurality of magnetic steels are arranged on the rotor, the magnetic steels are arranged on the inner wall of the rotor in a step-shaped staggered manner, and fan blades are arranged on the cambered surface of the rotor. The utility model improves the distribution of the magnetic steel, so that the magnetic field distribution is more uniform, and the problem of electromagnetic noise generated when the motor operates is effectively solved.

Description

Treadmill motor capable of reducing electromagnetic noise

Technical Field

The utility model belongs to the field of treadmill motors, and particularly relates to a treadmill motor capable of reducing electromagnetic noise.

Background

The treadmill is a necessary apparatus for families and gymnasiums, and is the best choice for indoor fitness. The treadmill motor is the power source of treadmill, because the treadmill use operates under the environment of quieter, has higher requirement to the motor so. Because the motor is arranged in a relatively sealed space, the prior art motor and the treadmill have higher noise after being arranged, the motor is arranged in the relatively sealed space, electromagnetic noise is generated after the motor is electrified and operated, air flow is small, and noise is high, so the problem needs to be improved and innovated.

SUMMERY OF THE UTILITY MODEL

The utility model improves the distribution of the magnetic steel, so that the magnetic field distribution is more uniform, and the problem of electromagnetic noise generated when the motor operates is effectively solved.

The utility model provides a treadmill motor of reduction electromagnetic noise, includes stator and rotor, its characterized in that, the rotor is the tube-shape cover and establishes outside the stator, be provided with a plurality of magnet steel on the rotor, the magnet steel is the crisscross setting of step form on the inner wall of rotor, the fan blade has been seted up on the cambered surface of rotor.

Preferably, the magnetic steels are uniformly distributed in a circumferential manner at left and right intervals, and the magnetic steels are staggered at an upper included angle and a lower included angle by five degrees.

Preferably, each row of the magnetic steels comprises three magnetic steels with the same width and thickness, two of the magnetic steels are the same in size, and the volume of the rest one magnetic steel is larger than that of the other two magnetic steels.

Preferably, a front end cover and a rear end cover are arranged at the front end and the rear end of the rotor, the fan blades are arranged on one side, close to the rear end cover, of the rotor, and a ventilation opening is formed in the front end cover.

Preferably, a ventilation net mounting groove is formed in the surface of the rotor and corresponds to the fan blades, and a ventilation net is arranged on the ventilation net mounting groove.

Preferably, the axle centers of the front end cover and the rear end cover are provided with bearings, and the front end cover and the rear end cover are sleeved at two ends of the stator through the bearings.

Preferably, a wiring hole is formed in the fixed shaft of the stator, and a stator core is arranged on the fixed shaft.

The utility model has the advantages that:

the magnetic steels are arranged on the inner wall of the rotor in a step-shaped staggered manner, the magnetic steels are uniformly distributed on the left and right at intervals in a circumferential manner, and the magnetic steels are staggered at an included angle of five degrees. The magnetic steel with the same width and thickness is arranged in each row of magnetic steel, two magnetic steels are the same in size, the volume of the rest magnetic steel is larger than that of the other two magnetic steels, so that the magnetic field distribution is uniform, the problem of electromagnetic noise generated when the motor operates is effectively solved, and the reliability and the service life of the motor are improved.

The front end cover and the rear end cover are arranged at the front end and the rear end of the rotor, the fan blades are arranged on one side, close to the rear end cover, of the rotor, the magnetic steel can be positioned by the fan blades, the problem that the circumference of the magnetic steel is uniformly distributed is solved, the magnetic field is more stable, and electromagnetic noise is greatly reduced. The front end cover is provided with a ventilation opening, so that the fan blade discharges hot air flow to the outside of the rotor when the rotor rotates, the ventilation opening can suck cold air from the other end, the cold air takes away generated heat through the rotor and the stator region, and finally the cold air is discharged through the fan blade, so that heat discharge circulation is formed to prevent the magnetic steel from weakening the magnetic field intensity in overhigh temperature, and the output efficiency of the motor is further maintained.

The wiring hole is communicated with one end, close to the front end cover, of the fixed shaft and the side of the stator core, so that the circuit can be connected with the stator core on the stator through the fixed shaft from the outside of the rotor, and the front end cover is bypassed, so that the circuit is prevented from being blocked when the front end cover rotates.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the rotor structure of the present invention.

Fig. 3 is a schematic view of the stator structure of the present invention.

FIG. 4 is a schematic view of the arrangement of magnetic steel according to the present invention.

In the figure, a rotor 1, a stator 2, magnetic steel 3, fan blades 4, a front end cover 5, a rear end cover 6, a fixed shaft 7, a wiring hole 8, a stator iron core 9 and a ventilation net 10.

Detailed Description

As shown in the figure, a treadmill motor of reduction electromagnetic noise, includes stator and rotor, its characterized in that, rotor 1 is the tube-shape cover and establishes outside stator 2, is provided with a plurality of magnet steel 3 on rotor 1, and magnet steel 3 is the crisscross setting of step form on rotor 1's inner wall, has seted up fan blade 4 on rotor 1's the cambered surface.

In this embodiment, the even interval about magnet steel 3 is the circumference and distributes, and the upper and lower contained angle dislocation five degrees between the magnet steel 3 are arranged. Each row of magnetic steel 3 comprises three magnetic steels 3 with the same width and thickness, wherein two magnetic steels 3 have the same size, and the volume of the rest one magnetic steel 3 is larger than the other two magnetic steels.

In this embodiment, both ends are provided with front end housing 5 and rear end housing 6 around rotor 1, and fan blade 4 sets up in one side that rotor 1 is close to rear end housing 6, can fix a position magnet steel 3's installation by fan blade 4, has solved the problem of magnet steel 3's circumference evenly distributed, makes magnetic field more stable, greatly reduced electromagnetic noise. The front end cover 5 is provided with a ventilation opening, so that the fan blades 4 discharge hot air flow out of the rotor 1 when the rotor 1 rotates, the ventilation opening can suck cold air from the other end, the cold air takes away generated heat through the rotor 1 and the stator 2 area, and finally the cold air is discharged through the fan blades 4, so that a heat discharge circulation is formed to prevent the magnetic steel 3 from weakening the magnetic field intensity in an over-high temperature, and the output efficiency of the motor is further maintained.

In this embodiment, the surface of the rotor 1 is further provided with a ventilation net mounting groove at a position corresponding to the fan blade 4, and the ventilation net 10 is arranged on the ventilation net mounting groove to prevent foreign matters from entering the rotor 1.

In this embodiment, the axle centers of the front end cover 5 and the rear end cover 6 are provided with bearings, the front end cover 5 and the rear end cover 6 are sleeved at two ends of the stator 2 through the bearings, the front end cover 5 and the rear end cover 6 are fixed at two ends of the cylindrical rotor 1, so that the rotor 1 can rotate around the stator 2 by the fixed shaft 7, and the fan blades 4 arranged on the rotor 1 immediately begin to discharge heat.

In the present embodiment, a wiring hole 8 is formed in a fixed shaft 7 of the stator 2, and a stator core 9 is provided on the fixed shaft 7. The wiring hole 8 is communicated with one end of the fixed shaft 7 close to the front end cover 5 and the side of the stator core 9, so that the circuit can be connected with the stator core 9 on the stator 2 through the fixed shaft 7 from the outside of the rotor 1, and the front end cover 5 is bypassed, and the circuit is prevented from being blocked when the front end cover 5 rotates.

In a general motor, after a current is introduced into a stator 1, a rotating magnetic field is generated, and because electromagnetic force generates rotating force waves and pulsating force waves in an air gap between the stator and a rotor, the stator 1 generates vibration to radiate noise. Therefore, the utility model improves the distribution of the magnetic steel 3, so that the magnetic field 3 is distributed more uniformly, and the problem of electromagnetic noise generated when the motor operates is effectively solved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a reduce electromagnetic noise's treadmill motor, includes stator and rotor, its characterized in that, rotor (1) is the tube-shape cover and establishes outside stator (2), be provided with a plurality of magnet steel (3) on rotor (1), magnet steel (3) are the crisscross setting of step form on the inner wall of rotor (1), fan blade (4) have been seted up on the cambered surface of rotor (1).

2. A treadmill motor as recited in claim 1, wherein the treadmill motor reduces electromagnetic noise, the treadmill motor comprising: the magnetic steels (3) are uniformly distributed in a circumferential manner at intervals from left to right, and the upper and lower included angles between the magnetic steels (3) are staggered by five degrees.

3. A treadmill motor as recited in claim 2, wherein said motor reduces electromagnetic noise, further comprising: each row of the magnetic steels (3) comprises three magnetic steels (3) with the same width and thickness, wherein two magnetic steels (3) have the same size, and the volume of the rest one magnetic steel (3) is larger than the other two magnetic steels.

4. A treadmill motor with reduced electromagnetic noise as recited in claim 1, wherein: the wind power generator is characterized in that a front end cover (5) and a rear end cover (6) are arranged at the front end and the rear end of the rotor (1), the fan blades (4) are arranged on one side, close to the rear end cover (6), of the rotor (1), and a ventilating opening is formed in the front end cover (5).

5. A treadmill motor as recited in claim 4, wherein said motor reduces electromagnetic noise, further comprising: the surface of the rotor (1) is also provided with a ventilation net mounting groove at a position corresponding to the fan blade (4), and a ventilation net (10) is arranged on the ventilation net mounting groove.

6. A treadmill motor as recited in claim 4, wherein said motor reduces electromagnetic noise, further comprising: the bearing is arranged at the axle center of the front end cover (5) and the rear end cover (6), and the front end cover (5) and the rear end cover (6) are sleeved at the two ends of the stator (2) through the bearing.

7. A treadmill motor as recited in claim 1, wherein the treadmill motor reduces electromagnetic noise, the treadmill motor comprising: a wiring hole (8) is formed in a fixed shaft (7) of the stator (2), and a stator core (9) is arranged on the fixed shaft (7).