CN101820211A

CN101820211A - Vibration motor

Info

Publication number: CN101820211A
Application number: CN 201010124114
Authority: CN
Inventors: 陈惠龙; 田兴元; 周善峰
Original assignee: ZHEJIANG JINDA MOTOR ELECTRICAL APPLIANCE CO Ltd
Current assignee: ZHEJIANG JINDA MOTOR ELECTRICAL APPLIANCE CO Ltd
Priority date: 2010-03-12
Filing date: 2010-03-12
Publication date: 2010-09-01

Abstract

The invention provides a vibration motor, which comprises a stator and a rotor, wherein the stator is provided with a permanent magnet (3), and the rotor comprises a shaft (1), an iron core (4) and windings (8); the windings are connected with a power supply through a commutator and an electric brush (6); and the shaft of the rotor is provided with an eccentric structure, wherein the eccentric structure consists of the eccentrically-arranged iron core and windings. In the vibration motor, the iron core and the windings are arranged eccentrically, so the rotor per se has an eccentric structure; meanwhile, a corresponding permanent magnet structure of the stator and the connection rule of the windings as well as the commutator structure and the electric brush structure are also provided, so at least one winding generates a magnetic field through a stator core, and a magnetic pole always has repulsion or attraction function on the gear which generates the magnetic field. Compared with the prior art, the vibration motor saves eccentric weight parts and the installation procedure thereof, thereby saving the cost; meanwhile, because the eccentric weights are not used, worries about the loosing, falling and sliding of the eccentric weights are saved, and the safety and reliability of the operation of the product are improved.

Description

Vibrating motor

Technical field the present invention is to provide a kind of vibrating motor, and especially a kind of miniature permanent magnet DC motor that eccentric structure is arranged belongs to technical field of motors in the electricity.

The vibrating motor that background technology is present comprises the vibrating motor that is widely used in mobile phone, massager etc., all constitutes to install eccentric hammer additional on rotor axis of electric, and the eccentric hammer that has is installed in outside the casing, and what have is installed in the casing.Owing to need install eccentric hammer additional, not only increased cost of manufacture and also can cause such as safety problem such as becoming flexible, come off because of the inefficacy of eccentric hammer installing mechanism.

The innovation and creation content is at above-mentioned deficiency, and technical problem to be solved by this invention is the cancellation eccentric hammer, thereby obtains the lower vibrating motor of cost.

Vibrating motor provided by the invention, stator and rotor are arranged, permanent magnetism is arranged on the stator, rotor comprises axle, iron core and winding, and winding is connected with power supply with brush by commutator, and eccentric structure is arranged on the armature spindle, wherein said eccentric structure is eccentric iron core and the winding that is provided with, specifically, the winding mounting teeth on iron core or the iron core do not arrange but arranged off-centre according to axial symmetry, and winding is arranged off-centre thereupon also; The eccentric winding that is provided with is installed the number of teeth more than three, and be commutator the electrode slice number 1/2; Commutator electrode slice number is that even number and on the same radial line of rotor two use the lead short circuit; The logarithm ratio commutator electrode slice logarithm of stator permanent magnet is few one, and press the S utmost point and N interpolar every with according to branch settings such as circumference, said permanent magnetism is to being by a S utmost point and the N utmost point same radial line that constitute and that be distributed in stator two ends; Brush is installed by the angle of adjacent two permanent magnetism magnetic poles, and adjacent permanent magnetism magnetic pole is meant adjacent a S utmost point and a N utmost point.

Vibrating motor provided by the invention, iron core or winding mounting teeth are arranged to eccentric, (the winding mounting teeth promptly is the part of being surrounded by winding on the iron core, is line embedding groove between two teeth in the motor usually), comprise that winding also along with off-centre is installed, makes rotor itself form eccentric structure.For being fit to the off-centre setting of aforementioned rotor core and winding, the invention allows for wiring rules, commutator and the brush structure of corresponding stator permanent magnet structure and winding, make to have at least a winding to produce magnetic field, and always have the tooth generation in this generation magnetic field of pole pair to repel each other or interattraction through stator core.Compared with prior art, the present invention has saved eccentric hammer part and installation steps thereof, provides cost savings, because the anxiety that eccentric hammer has not then had eccentric hammer to become flexible, come off, skid is not installed, has improved the fail safe and the reliability of product operation simultaneously.

Vibrating motor provided by the invention, said eccentric structure is after centrosymmetric tooth is removed adjacent half on the rotor core, winding is installed on the tooth of surplus part and is constituted, be that rotor core and existing motor relatively are to keep centering ring and half installs the tooth of winding, on the tooth that keeps, winding be installed and become eccentric structure.

The periphery of the winding mounting teeth in the said rotor core is extended to two ends according to axis, and the cross section that the winding mounting teeth is dissectd according to plane, rotor axis place is the T shape of going up horizontal sensing stator, has enlarged the active area between rotor and the stator, thereby has raised the efficiency.

Description of drawings Fig. 1 is the axial cutaway view of one embodiment of the invention, among the figure: 1-armature spindle, 2-motor casing, 3-permanent magnetism, 4-rotor core (being overrided to form by many layer chips), 5-commutator electrode slice, 6-brush, 7-motor cover;

Fig. 2 is A among Fig. 1---A is to cutaway view, among the figure: 1-armature spindle, 2-motor casing, 3-permanent magnetism, 4-rotor core, 5-commutator electrode slice, 6-brush, 8-winding;

Fig. 3 is the winding of one embodiment of the invention and the winding diagram of commutator, 41,42, three winding mounting teeth being arranged in order of 43-among the figure:, 51,52,53,54,55,, a 56-6 commutator electrode slice, 81,82,83-is installed in three windings on 41,42,43;

Fig. 4 is the rotor stereogram of another embodiment of the present invention, among the figure: 24-iron core, 25-commutator electrode slice, 28-winding.

Embodiment 1, vibrating motor, its structure as shown in Figure 1, 2, motor has stator and rotor to constitute, stator is that permanent magnetism 3 is installed in the motor casing 2, rotor is by axle 1, iron core 4 and go up winding 8 and constitute, and is installed in the stator and by motor casing and motor cover 7 supporting rotor axles.Wherein, rotor core has three winding mounting teeth, and the middle separated time of three teeth (promptly crossing the symmetrical centre plane of the winding mounting teeth of axle) concurrent angle is 120 °, two teeth in both sides all are 60 ° with the middle separated time angle of a middle tooth respectively in three teeth in other words, only keep a circle identical with the rule bottom radius around the axis hole on other angles of iron core circumference and do not have winding mounting teeth part.Be that rotor core is eccentric.Said winding only is installed on three winding mounting teeth.The weight that separated time only accounts for 120 ° winding mounting teeth and winding in the dependence forms the eccentric structure of rotor.The commutator that constitutes with six plate electrode sheets 5 also is installed on the armature spindle, angle is installed is two brushes 6 of 90 ° on the motor cover.Stator permanent magnet is made of two pairs of magnetic poles, and two S utmost points and two N utmost points are promptly arranged, these four pole polarity at interval and five equilibrium ground install, that is to say polar organization that stator permanent magnet points to stator be have four and respectively account for 90 ° of central angles, be the neighbour's with the opposed polarity.When the power supply of brush conducting winding, this winding place tooth is across between two magnetic poles.

This routine winding connection is denoted as 41,42,43 successively with three winding mounting teeth as shown in Figure 3, and the electrode slice that their pairing three windings are denoted as 81,82,83, six commutators is denoted as 51,52,53,54,55,56 successively.Then during wiring, three windings connect by delta connection, and tie point is connected on three adjacent commutator electrode slices, and per two electrode slices on same rotor radial line connect short circuit with lead simultaneously.By diagram, three tie points that 51,52,53 3 electrode slices can be connected by delta connection as 81,82,83 3 windings are more respectively with 51 and 54,52 and 55,53 and 56 3 pairs of electrode slice short circuits.

The vibrating motor that 2, one platypelloid type is arranged, its rotor have the rotor core 24 that is overrided to form with three chips as shown in Figure 4, and be the same with last example, and iron core has three eccentric winding mounting teeth that are provided with, and a winding 28 respectively is installed on the tooth.Each outwards turns back two in the outside of three chips in tooth outer end and forms from crossing axial plane and dissect the structure that section is a T shape.Epitrochanterian commutator electrode slice has 6, does the plane and is provided with.The structure of the stator permanent magnet of this motor, brush, winding, commutator and the flat needs of annexation deconditioning are all same with last example outward.

3, a vibrating motor is arranged, structure roughly with example together, wherein the winding mounting teeth on the rotor core accounts for 8 five equilibriums 4 in cutting apart, then winding also has 4, in separated time account for 135 ° altogether, except that between two of the outermosts, the middle separated time angle between adjacent two teeth is 45 °.Permanent magnetism has three pairs of magnetic poles, and angle is 60 ° between the two neighboring pole.The commutator electrode slice has 8,60 ° of two brush angles.4 windings are pressed the quadrangle connection during wiring, and 4 tie points are connected in turn on 4 continuous commutator electrode slices, and two commutator electrode slice short circuits on same rotor radial line.

Claims

1. vibrating motor, stator and rotor are arranged, permanent magnetism is arranged on the stator, rotor comprises axle, iron core and winding, and winding is connected with power supply with brush by commutator, and eccentric structure is arranged on the armature spindle, it is characterized in that said eccentric structure is eccentric iron core and the winding that is provided with, specifically, the winding mounting teeth on iron core or the iron core do not arrange but arranged off-centre according to axial symmetry, and winding is arranged off-centre thereupon also; The eccentric winding that is provided with is installed the number of teeth more than three, and be commutator the electrode slice number 1/2; Commutator electrode slice number is that even number and on the same radial line of rotor two use the lead short circuit; The logarithm ratio commutator electrode slice logarithm of stator permanent magnet is few one, and press the S utmost point and N interpolar every with according to branch settings such as circumference, said permanent magnetism is to being by a S utmost point and the N utmost point same radial line that constitute and that be distributed in stator two ends; Brush is installed by the angle of adjacent two permanent magnetism magnetic poles, and adjacent permanent magnetism magnetic pole is meant adjacent a S utmost point and a N utmost point.

2. vibrating motor as claimed in claim 1 is characterized in that said eccentric structure is after centrosymmetric tooth is removed adjacent half on the rotor core, winding is installed on the tooth of surplus part and is constituted.

3. vibrating motor as claimed in claim 1 or 2 is characterized in that the periphery of the winding mounting teeth in the said rotor core is extended to two ends according to axis, and the cross section that the winding mounting teeth is dissectd according to plane, rotor axis place is the T shape of going up horizontal sensing stator.