CN202231550U

CN202231550U - Vibration motor

Info

Publication number: CN202231550U
Application number: CN2011203824467U
Authority: CN
Inventors: 王辉建; 郭晓滨; 刘检荣; 许振通; 刘进芝; 邱玉聪; 黄春结; 肖磊; 张炳华; 洪清琛; 吴志强; 张兰妹; 林观文; 吴君生; 叶彬; 李煌荣
Original assignee: XIAMEN DAZHEN MOTOR CO Ltd
Current assignee: XIAMEN DAZHEN MOTOR CO Ltd
Priority date: 2011-10-10
Filing date: 2011-10-10
Publication date: 2012-05-23
Anticipated expiration: 2021-10-10

Abstract

The utility model discloses a vibration motor which comprises a casing 2, a motor stator 3, a motor rotor 4, a motor shaft 5, an eccentric wheel 6, a bearing A1 and a bearing B7. The motor rotor 4 and the eccentric wheel 6 are fixedly arranged between the bearing A1 and the bearing B7 on the motor shaft 5. The eccentric wheel 6 is disposed on the motor shaft 5. A hinged beam structure formed among the eccentric wheel 6, the motor shaft 5 and the bearings allows force applied by the eccentric wheel 6 to the motor shaft 5 mainly to be radial force, such that axial force is barely generated, uniform force is applied to the bearings, and the motor shaft 5 is not liable to move along the axial direction. Therefore, the bearings are not liable to wear and have a long service life, the motor rotor 4 can rotate stably, a brush between the motor stator 3 and the motor rotor 4 runs normally, and electric sparks and abnormal noise are not liable to occur.

Description

A kind of vibrating motor

Technical field

The utility model relates to a kind of vibrating motor, belongs to the motor technology field.

Background technology

Eccentric wheel, bearing, rotor are installed on the motor shaft of vibrating motor; Bearing matches in groups, shown in Figure 1 like accompanying drawing, present this vibrating motor; Eccentric wheel 6 is installed in outside two bearings 1, bearing 7 of pairing; Form cantilever beam structure between eccentric wheel 6, motor shaft 5 and the bearing, the inertia force that eccentric wheel 6 produces during machine operation acts on the motor shaft 5, produces very big radial load and bigger axial force.Needed vibrations except that taking place in the radial load that produces because of cantilever beam structure; Also make motor shaft stressed excessive near eccentric this end; Cause other end perk, make the brush between motor stator and rotor receive abnormal friction and cause electric spark, produce extraordinary noise simultaneously; The radial load that produces because of cantilever beam structure also makes two shaft strength inequalities on the motor shaft; Two bearings all bear bigger radial load; Bearing near eccentric this end is more abominable than the shaft strength situation of the other end, causes bearing easy abrasion, life-span low, brings extraordinary noise simultaneously; The axial force that produces because of cantilever beam structure makes motor shaft back and forth constantly play take place axially, causes bearing easy abrasion, life-span low, brings extraordinary noise simultaneously.

The utility model content

The purpose of the utility model just is to provide a kind of vibrating motor, it can effectively reduce electric spark generation, make shaft strength evenly not easy to wear, effectively reduce extraordinary noise.

For achieving the above object; The technical scheme that the utility model adopts is: a kind of vibrating motor; Comprise casing, motor stator, rotor, motor shaft, eccentric wheel, bearing A, bearing B, motor shaft is installed on casing through bearing A, bearing B, and rotor, eccentric wheel are fixedly mounted between bearing A on the motor shaft, the bearing B; Motor stator is fixedly mounted on casing inner wall, is provided with brush between motor stator and the rotor.

Adopt such technical scheme; Eccentric wheel is fixedly mounted between bearing A on the motor shaft, the bearing B; Form hinged girder construction between eccentric wheel, motor shaft and bearing A, the bearing B, the inertia force that eccentric wheel produces when making machine operation acts on that main on the motor shaft what produce is radial load, and this hinged girder construction makes two shaft strengths on the motor shaft more even; The inertia force that eccentric wheel produces acts on and does not almost produce axial force on the motor shaft; Play is not axially taking place in motor shaft, so bearing is not easy to wear, the life-span is long, has stopped the extraordinary noise that bearing produces because of unbalance stress simultaneously; This hinged girder construction also makes the rotor rotation steadily, and the brush operate as normal between motor stator and rotor is difficult for causing electric spark and extraordinary noise.

Description of drawings

Fig. 1 is that eccentric wheel, bearing, rotor are installed on the structural principle sketch map on the motor shaft in the background technology vibrating motor.

Fig. 2 is that eccentric wheel, bearing, rotor are installed on the structural principle sketch map on the motor shaft in a kind of vibrating motor of the utility model.

Fig. 3 is the cutaway view of a kind of vibrating motor embodiment of the utility model.

In the accompanying drawing:

1 bearing A; 2 casings; 3 motor stators; 4 rotors;

5 motor shafts; 6 eccentric wheels; 7 bearing B.

Embodiment

Fig. 1 is the structural principle sketch map of background technology vibrating motor; Eccentric wheel 6, bearing A1, bearing B7, rotor 4 all are installed on the motor shaft 5 in the vibrating motor, and eccentric wheel 6 is installed in outside two bearings of pairing, forms cantilever beam structure between eccentric wheel 6, motor shaft 5 and bearing A1, the bearing B7; The inertia force that eccentric wheel 6 produces during machine operation acts on the motor shaft 5; Produce very big radial load and bigger axial force, make shaft strength uneven, cause bearing easy abrasion, low, generation extraordinary noise of life-span; Also can cause brush between motor stator 3 and the rotor 4 to receive abnormal friction and cause and produce extraordinary noise simultaneously by electric spark.

Fig. 2 is the structural principle sketch map of a kind of vibrating motor of the utility model; Eccentric wheel 6, bearing A1, bearing B7, rotor 4 all are installed on the motor shaft 5 in the vibrating motor; Eccentric wheel 6 is installed within two bearings of pairing; Form hinged girder construction between eccentric wheel 6, motor shaft 5 and bearing A1, the bearing B7, the inertia force that eccentric wheel 6 produces during machine operation acts on that main on the motor shaft 5 what produce is radial load, and shaft strength is more even; Play is not axially taking place in motor shaft 5, so bearing is not easy to wear, the life-span long, stopped extraordinary noise; Rotor 4 rotations simultaneously are steady, and the brush operate as normal between motor stator 3 and the rotor 4 is difficult for causing electric spark and extraordinary noise.

Structural principle according to Fig. 2; Fig. 3 has provided the embodiment of a kind of vibrating motor of the utility model; It comprises casing 2, motor stator 3, rotor 4, motor shaft 5, eccentric wheel 6, bearing A1, bearing B7, and motor shaft 5 is installed on casing 2 through bearing A1, bearing B7, and rotor 4, eccentric wheel 6 are fixedly mounted between bearing A1 on the motor shaft 5, the bearing B7; Motor stator 3 is fixedly mounted on casing 2 inwalls, is provided with brush between motor stator 3 and the rotor 4.

Usually, casing 2 plays the effect of support simultaneously, and the center at casing 2 two ends has bearing saddle bore so that bearing A1, bearing B7 to be installed.

Rotor 4, eccentric wheel 6 are fixedly mounted on the motor shaft 5; Can adopt axial location modes such as the shaft shoulder, axle sleeve, key, pin, back-up ring; With each parts on the fixed electrical machinery axle 5, prevent each parts in the axle upper edge axial endplay, stop wearing and tearing and noise that play causes, increase the service life.

The above is merely the preferred embodiment of the utility model; It is not qualification to the utility model protection range; The those skilled in the art is in the spirit and scope of the utility model that does not break away from claims and limited; In form with details on many variations that the utility model is made, all fall into the protection range of the utility model.

Claims

1. vibrating motor; Comprise casing (2), motor stator (3), rotor (4), motor shaft (5), eccentric wheel (6), bearing A (1), bearing B (7); Motor shaft (5) is installed on casing (2) through bearing A (1), bearing B (7); Motor stator (3) is fixedly mounted on casing (2) inwall; Be provided with brush between motor stator (3) and the rotor (4), it is characterized in that: rotor (4), eccentric wheel (6) are fixedly mounted between bearing A (1) on the motor shaft (5), the bearing B (7).

2. a kind of vibrating motor according to claim 1 is characterized in that: the center at described casing (2) two ends has bearing saddle bore, and bearing A (1), bearing B (7) are installed on this two bearing saddle bores respectively.