CN208353099U - Rotor in motor - Google Patents

Abstract

The utility model discloses the rotors in a kind of motor, including rotor core and shaft, through-hole is offered on the rotor core, the shaft is mating by through-hole and rotor core, accommodation groove is formed in shaft two sides on the rotor core, it is provided with magnetic part in the accommodation groove, is circumferentially provided between side and rotor core of the magnetic part far from through-hole and on rotor core in shaft several for preventing the air groove of leakage field.Its structure is simple, effectively reduces leakage field, and using effect is more preferable.

Description

Rotor in motor

Technical field

The utility model relates to motor technologies field, especially a kind of rotor applied in motor.

Background technique

Motor generally includes stator and rotor, and working principle is to generate magnetic field magnetized stator iron by hot-wire coil on stator The rotation of core ribbon turn, thus output mechanical energy, motor is also widely used in field of electric toothbrushes at present, and electric toothbrush is close several The new product that year occurs has started a revolution of oral hygiene in foreign countries.Although electric toothbrush is in the application in China It does not popularize still, but with the raising that people recognize it, electric toothbrush will become important a member in public health care product.Investigation It has been shown that, electric toothbrush are more scientific effective compared with ordinary toothbrush.Plaque can more be thoroughly removed, reduce gingivitis and tooth Oulorrhagia, electric toothbrush are rotated by the fast reciprocating of motor output shaft, and brush head is made to generate high-frequency vibration, so that moment is by tooth Cream resolves into subtle foam, deeply cleans teeth space；Motor in electric toothbrush generallys use exchange electric notor, to realize electricity Dynamic head toothbrushes swing, and realize the purpose to cleaning of teeth, but in existing electric toothbrush, motor configuration is more multiple Miscellaneous, especially rotor portion, existing rotor generally include to be evenly distributed on four pieces of magnetic parts on rotor core, but in this way It is arranged so that magnetic circuit is complicated, it is also difficult to grasp the balance of rotor rotation, while volume is larger, be unfavorable for installing and use.

Utility model content

In view of the deficiencies of the prior art, the utility model provides the rotor in a kind of motor, and structure is simple, effectively reduces Leakage field, using effect are more preferable.

The utility model provides the rotor in a kind of motor, including rotor core and shaft, opens up on the rotor core There is through-hole, the shaft is mating by through-hole and rotor core, it is characterised in that: in shaft two sides on the rotor core It is formed with accommodation groove, magnetic part is provided in the accommodation groove, between side and rotor core of the magnetic part far from shaft And several air grooves for being used to prevent leakage field are circumferentially provided in shaft on rotor core.

The beneficial effect being arranged in this way is: using the above scheme, using the setting wrapped up magnetic part, while being only arranged two It is more stable that a magnetic part makes shaft swing, further at separate turn of magnetic part both ends setting air groove, that is, magnetic part Between the side and rotor core of axis and magnetic part is between the side and shaft of shaft, can prevent letting out for magnet magnetic force The supersaturation of dew and magnetic force can efficiently use the magnetic force of magnet, increase motor performance, so that motor has more preferable driving Power.

The utility model is further arranged to the rotor core two sides and offers gripping groove, and the shaft is set to rotor Core center position, the magnetic part are symmetricly set on through-hole two sides, and the radial section of the rotor core, which is centrosymmetric, to be set It sets.

The beneficial effect being arranged in this way is: using the above scheme, setting gripping groove is taken iron core convenient for manpower or machine, Convenient for iron core to be encased in motor, production and processing efficiency is improved.Section is centrosymmetric setting simultaneously, so that rotor deflection is left Right amplitude is similar, increases the stability of overall mechanism, is allowed to that stress is more balanced, improves the using effect of product.

It includes inside groove, outer groove and circumferential slot that the utility model, which is further arranged to the air groove, and the inside groove setting exists Between shaft and magnetic part, the outer groove is set between magnetic part and rotor core, and the circumferential slot is located at shaft two sides simultaneously Be arranged between two inside grooves, the inside groove extends to form arc groove to rotor core peripheral wall, the rotor core in arc groove with Reinforcing rib is provided between inside groove and between circumferential slot and inside groove.

The beneficial effect being arranged in this way is: using the above scheme, setting reinforcing rib can increase the intensity of iron core, keep away Exempt to cause due to the presence of air groove integrally-built unstable, improves the stability of structure.

It includes dovetail groove and rectangular channel that the utility model, which is further arranged to the gripping groove, and the dovetail groove is towards through-hole Tapered setting, the rectangular channel are set between dovetail groove and through-hole and are connected with dovetail groove.

The beneficial effect being arranged in this way is: using the above scheme, further takes rotor core convenient for manpower or machine, Convenient for rotor core is encased in motor.

The utility model is further arranged to be provided with the limited block for limiting the rotor amplitude of oscillation in the shaft.

The beneficial effect being arranged in this way is: using the above scheme, limited block is set, avoids shaft rotation amplitude excessive, from And rotor is made to occur the phenomenon that reversion is reversed, guaranteeing the stability of structure.

It includes output shaft and the semiaxis with through-hole grafting, the bearing packet that the utility model, which is further arranged to the shaft, First bearing and second bearing are included, the first bearing is set on output shaft, and the second bearing is set in half by axle sleeve On axis, the rotor core is arranged between first bearing and second bearing, and the limited block is arranged in semiaxis end.

The beneficial effect being arranged in this way is: using the above scheme, setting axle sleeve can make first bearing and second bearing Using identical specification, product Adapter Property is improved, while further facilitating replacement and use.

Detailed description of the invention

Fig. 1 is the explosive view of the utility model embodiment；

Fig. 2 is the cross section view of the utility model embodiment；

Fig. 3 is the cross section view of rotor core in the utility model embodiment.

Specific embodiment

A kind of embodiment of rotor in motor, including rotor core 2 and shaft are disclosed by Fig. 1 to Fig. 3, described turn Through-hole 21 is offered on sub- iron core 2, the shaft is mating by through-hole 21 and rotor core 2, and the shaft is in rotor iron 2 both ends of core are provided with bearing, the cylindrical setting of the rotor core 2, and the shaft is set to 2 center of rotor core, The rotor core 2 is symmetrically arranged with accommodation groove 22 in shaft two sides, and magnetic part 5, the magnetic are provided in the accommodation groove 22 Property side of the part 5 far from shaft and rotor core 2 between and rotor core 2 on be circumferentially provided in shaft it is several for preventing The air groove of leakage field, the air groove include inside groove 24, outer groove 23 and circumferential slot 27, and the setting of inside groove 24 is in shaft and magnetism Between part 5, the outer groove 23 is set between magnetic part 5 and rotor core 2, and the circumferential slot 27 is located at shaft two sides and is arranged Between two inside grooves 24, the inside groove 24 extends to form arc groove 25 to 2 peripheral wall of rotor core, and the rotor core 2 is in arc Reinforcing rib 26 is provided between slot 25 and inside groove 24 and between circumferential slot 27 and inside groove 24.It opens 2 two sides of rotor core Equipped with gripping groove 28, the gripping groove 28 includes dovetail groove 282 and rectangular channel 281, and the dovetail groove 282 is tapered towards through-hole 21 Setting, the rectangular channel 281 are set to dovetail groove 282 between through-hole 21 and are connected with dovetail groove 282, the rotor core 2 Section is centrosymmetric setting.

The shaft includes output shaft 11 and the semiaxis 12 with 21 grafting of through-hole, and the bearing includes first bearing 31 and Two bearings 32, the first bearing 31 are set on output shaft 11, and the second bearing 32 is set in semiaxis 12 by axle sleeve 33 On, the rotor core 2 is arranged between first bearing 31 and second bearing 32, and the limited block 4 is arranged in 12 end of semiaxis.

The above embodiments are only the preferred embodiment of the utility model, and the right of the utility model cannot be limited with this Range, therefore, equivalent variations made according to the patent scope of the utility model, such as using similar technique, similar structures Equivalent product is still fallen within the scope of the utility model.

Claims (6)

1. the rotor in a kind of motor, including rotor core and shaft, through-hole is offered on the rotor core, the shaft is logical It is mating with rotor core to cross through-hole, it is characterised in that: it is formed with accommodation groove in shaft two sides on the rotor core, it is described Magnetic part is provided in accommodation groove, in turning between side and rotor core of the magnetic part far from shaft and on rotor core Axis is circumferentially provided with several for preventing the air groove of leakage field.

2. the rotor in motor according to claim 1, it is characterised in that: the rotor core two sides offer gripping Slot, the shaft are set to rotor core center, and the magnetic part is symmetricly set on through-hole two sides, the rotor core Radial section is centrosymmetric setting.

3. the rotor in motor according to claim 1 or 2, it is characterised in that: the air groove include inside groove, outer groove and Circumferential slot, the inside groove are arranged between shaft and magnetic part, and the outer groove is set between magnetic part and rotor core, described Circumferential slot is located at shaft two sides and is arranged between two inside grooves, and the inside groove extends to form arc groove to rotor core peripheral wall, institute It states rotor core and is provided with reinforcing rib between arc groove and inside groove and between circumferential slot and inside groove.

4. the rotor in motor according to claim 2, it is characterised in that: the gripping groove includes dovetail groove and rectangle Slot, the dovetail groove are set between dovetail groove and through-hole towards the tapered setting of through-hole, the rectangular channel and are connected with dovetail groove.

5. the rotor in motor according to claim 1, it is characterised in that: be provided in the shaft for limiting rotor The limited block of the amplitude of oscillation.

6. the rotor in motor according to claim 5, it is characterised in that: the shaft is also set up in rotor core both ends There is bearing, the shaft includes output shaft and the semiaxis with through-hole grafting, and the bearing includes first bearing and second bearing, institute It states first bearing to be set on output shaft, the second bearing is set on semiaxis by axle sleeve, and the rotor core setting exists Between first bearing and second bearing, the limited block is arranged in semiaxis end.