CN106803699B - Brushless DC vibrating motor - Google Patents
Brushless DC vibrating motor Download PDFInfo
- Publication number
- CN106803699B CN106803699B CN201610861357.8A CN201610861357A CN106803699B CN 106803699 B CN106803699 B CN 106803699B CN 201610861357 A CN201610861357 A CN 201610861357A CN 106803699 B CN106803699 B CN 106803699B
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- tooth socket
- sheet metal
- permanent magnet
- socket sheet
- vibrating motor
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
- H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Brushless Motors (AREA)
Abstract
The present invention relates to a kind of brushless DC vibrating motors, the brushless DC vibrating motor has following features, ticker on rotor places fixation between bracket and permanent magnet, to which the top and bottom of ticker firmly fix, the weight of ticker, which can increase, is equivalent to permanent magnet upper end area, so being conducive to increase shock momentum, the top and bottom of bearing combining part are equipped with the chuck for preventing bearing to be detached from, it is not Durchgangshohle that the tooth socket sheet metal installation site of lower casing, which uses channel-shaped, therefore the integrated support power of lower casing is increased, tooth socket sheet metal mounting groove upper end is equipped with the boss for preventing sheet metal to be detached from, so that sheet metal is firmly pasted on lower casing, tooth socket sheet metal is connected, it disposable easy can assign into lower casing, optimize tooth socket sheet metal area, guarantee the pop-up for containing rotor when motor starting, it is anti- Only with the friction noise of upper casing, the stopping speed of the rotor in rotation is improved, residual vibration is eliminated, and guarantees that rotor maintains uniform horizontal plane in rotation.
Description
Technical field
The invention belongs to vibrating motor fields, are related to the small electricals such as mobile phone, portable game machine, earphone, wearable device
Brushless direct current (Brushless Direct Current:BLDC) vibrating motor of sub- instrument.
Background technique
Smart phone market persistently loads necessary various functions in various lives, needs for convenience of the use of consumer
Hardware is installed in a limited space, it is necessary to which hardware is miniaturized.Vibrating motor is in mobile communication such as mobile phone, timers
Play the role of transmitting signal on equal terminating machines, be widely used in the field for needing to vibrate, such as: the simulation effect in order to reach game
Fruit is applied to game machine；It is used on earphone, various wearing electron-like instruments as prompting function recently, above-mentioned electronic product
Micromation is laid particular emphasis on, therefore is applied to the vibrating motor in above-mentioned field, same demand micromation.
Representative products of the vibrating motor as vibration purposes are the occurring principles with electromagnetic energy, electromagnetic energy are turned
The mode for turning to mechanical energy is vibrated.Fig. 1 and Fig. 2 is Korean patent No.: the BLDC mentioned in 10-1406207 vibrates horse
Up to the exploded view and sectional view of (10).
BLDC vibrating motor (10) is not by the high-speed rotating rotor of driving period (ROTOR) and itself rotating but supporting
The stator (STATOR) of rotor (ROTOR) (40) and casing (12,36) composition for playing the role of jacket.
The lower casing (36) of upper casing (12) riveted disc-shape forms storage rotor (40) and stator (50) space, under
The central part of casing (36) has the porose axis fixed part (38) that the axis (26) of stator (50) can be vertically pressed into, lower casing (36)
Surrounding is equipped with the through hole (37) combined convenient for the indentation of tooth socket sheet metal.
The structure of rotor (40) is that magnet, the outside of magnet (22) and bracket are assigned in the surface of bracket (BACK YOKE, 16)
(16) it is integrally formed after the hyperbaric ticker of surface mount, then bearing is pressed into place by force in the axis of bracket (16) centre
It holds in the bearing combined hole (17) inside engaging portion, so that the rotor (40) and stator that are integrally formed can play rotation after combining
Effect.
Stator (50) by flexible circuit board (PCB, 32), driving IC(30), coil (28), axis (26), tooth socket sheet metal
(34) it forms, the tooth socket metal plate (34) of magnetic substance composition assigns into the through hole (37) got ready in lower casing (36), tooth socket
While metal plate (34) improves the rotation torque of rotor (40), generate tooth socket torque (COGGING TORQUE), to improve
Performance when starting guarantees that rotor (40) stop at certain position under the interaction of rotor (40) and magnet (22).
The flexible circuit meal (32) that centre has axis through hole (39) places 1 that generates electromagnetic force above with coil
(28) (preferably place 2-4 coil) and driving IC (30), drive IC(30) have the function of Hall sensor.Flexible circuit board
(32) it is pasted with the substances such as lower casing adhesive or double-sided adhesive.The soft electricity of (36) is attached on lower casing for convenience
Road plate (32) accesses external power supply, and electrode terminal position extends to the periphery of upper casing (26), and axis (26) passes through flexible circuit board
(32) above assign into that the middle part of lower casing (36) is die cut out after through hole (39) by jack, most through the above process
The assembling of stator (50) is completed eventually.
The bearing (18) of rotor (40) covers on the axis (26) of stator (50), and thus rotor (40) and stator (50) are incorporated in
Together and rotate.And the upper and lower part of axis (26) is respectively assigned gasket (24), forces to guarantee rotor (40) in certain altitude model
Enclose interior rotation.
In order to protect stator (50) and rotor (40), upper casing (12) and lower casing (36) are assembled, after upper and lower enclosure assembling
Stator (50) and rotor (40) are stored in the space of generation, and slide plate or peace are pasted on the inside of upper casing upper end in order to reduce noise
Insert pad piece (14).
The pole N and the pole S are alternately arranged on the magnet lower circular face (i.e. the rounded face in coil (28) direction) of rotor (40), from
And corresponding magnetic field is formed, the driving power of vibrating motor (10) is connected to flexible circuit board (32) by electrode tip (33),
Driving power passes through driving IC(30) electric current is supplied to built-in coil (28), at this point, using driving IC is built in
(30) signal that the Hall sensor on issues supplies electric current to corresponding coil, so that each coil of conducting forms magnetic field, it is fixed
Occur between the magnetic field that the magnet (22) on magnetic field and rotor (40) that each coil (28) on sub (50) is formed is formed gravitation and
Repulsion, under the interaction by gravitation and repulsion, rotor (40) is rotated centered on stator (50) axis (26), at this time because of vibration
The bias of the center of gravity of mover (20), so rotor (50) is rotated in a manner of vibration.Such eccentric rotary is transferred to casing
On (12,36), the mode of vibrating motor (10) body vibration is caused to rotate.
Such BLDC vibrating motor (10) has following several problems:
The first, its construction restricts the abundant increasings of ticker (20), and there are brackets (16) to ticker (20) combination
The weaker disadvantage of power.Ticker (20) is mounted on the space between the peripheral sides of magnet (22) and the side wall of upper casing (12)
In, because the size of ticker (20) is influenced by this space size.Reduce magnet (22) radius, will lead to rotatory force reduction, institute
To be difficult to reduce magnet (22).The size of upper casing (12) is not increased, the weight for increasing ticker (20) increases shock momentum very
It is difficult.Because of the miniaturization of the terminating machine of application BLDC motor, if to increase ticker (20) necessarily increases upper casing (12), institute
It is disagreed with the increasing and demand of motor volume.The a part of ticker (20) as rotor (50), support force come
Source is the degree of adhesion with bracket (16).Extremely strong centrifugal force will occur for the ticker (20) of high-speed rotation, in long-term use process
In withstand the tacky state that centrifugal force keeps stable, need the bonding force of abundant size, but above and bracket because of ticker (20)
(16) the contact faciostenosis combined is difficult to obtain required degree of adhesion.So be hit power when, ticker (20) is easy from branch
Frame is detached from (16).
The second, the mode being inserted into lower casing (36) through hole assigns tooth socket metal plate (34), therefore when external impact, meeting
There is the phenomenon that tooth socket metal plate (34) are detached from lower casing (36).Neutral region between the pole N and the pole S is formed in magnet (22)
(neutral zone) does not start appearance a little if the included Hall sensor of driving IC is located exactly at neutral region,
To which motor cannot drive.The effect of component part tooth socket sheet metal as stator is to keep rotor magnet (22) pole N and S extremely total
It is arranged in above Hall sensor, guarantees that rotor stops in correct position, to prevent not starting a little for motor, tooth socket metal
Plate (34) is detached from from lower casing (36), will be unable to prevent do not start generation a little.
Third, such as traditional approach, tooth socket metal plate (34) are assigned in a manner of penetrating through lower casing (36), and lower casing (36) is right
Weaken for tooth socket metal plate (34) support force, therefore there are limitations for expansion tooth socket metal plate (34) area.Tooth socket metal plate
(34) area is small, weak with gravitation between the magnet (22) that is mounted on rotor (40), therefore rotor (40) when motor (10) starts
Influenced by bounce, occur rotor (40) upward rebound floating the phenomenon that, the rotor (40) of floating has touched protection
The upper casing (12) of effect generates noise.In the past in order to eliminate such noise, installation prevents the slide plate or gasket (14) of noise, because
This operation is cumbersome.
If the 4th, the area of tooth socket metal plate (34) is small, when motor (10) stops driving, the rotor (40) in rotation is thorough
Until stopping residual vibration occurs for bottom.On the contrary, the area of tooth socket metal plate (34) is excessive, generation is not started into phenomenon, therefore assign
The metal plate of proper area is considerable.
Summary of the invention
The technical problem to be solved in the present invention mainly has the following aspects:
The shortcomings that present invention is in order to make up previous BLDC vibrating motor improves the structure of assigning of ticker, increases weight, mentions
For the BLDC motor of bigger vibratory output.
The present invention is in order to provide even if the weight for increasing ticker, but ticker and bracket bonding are stronger, are falling
Ticker is prevented to be detached from from rotor when impact.
Present invention improves sheet metals on previous lower casing to assign structure, improves the support force of lower casing, improves simultaneously
The stopping speed of motor, eliminates remaining vibration.
The present invention optimizes the area of tooth socket sheet metal, friction to upper casing when eliminating starting, additional anti-without taking
Noise measure.
The present invention solve technical problem the technical solution adopted is that:
As shown in of the embodiment of the present invention, the principle of brushless vibrating motor is that the rotor of gravity center eccentric and stator combine
Afterwards, it is received into inside casing, because between the magnetic field of electromagnetic force that said stator generates and the permanent magnet field of rotor mutually
The lower electromagnetic force formed of effect rotates rotor and generates vibration.Casing includes that the upper casing of shell-like and center have axis to fix
Portion, the lower casing that multiple tooth socket sheet metal mounting grooves are formed around axis fixed part, said stator includes being inserted perpendicularly into axis to fix
The axis in portion；Prevent rotor magnetic pole from returning to neutral region, be placed in lower casing tooth socket sheet metal mounting groove, generate cogging torque
Multiple tooth socket sheet metals；It is adhered to the upper surface of the lower casing for assigning tooth socket sheet metal, using external power supply, providing rotor driving must
Want the flexible circuit board of electric current；It is placed in above flexible circuit board, during supplying driving power, plays the multiple of magnetic fields
Coil；It assigns on axis, the gasket of the sustainable rotor for being placed in axis fixed part upper end.Above-mentioned rotor includes with arc-shaped scale
Upper end bracket and lower end bracket can be distinguished for boundary and there is the bracket of bearing combining part in middle: being pressed into above-mentioned bearing combining part
In bearing；It is fixed on the bracket of lower end, the annular permanent magnet of the pole N and the cross arrangement of the pole S；And high specific gravity substance is made into
Ticker, ticker is divided into upper end and sidewall portion, and hamburger shape is mutually viscous between upper end and upper end bracket and permanent magnet
Patch, sidewall portion are extended downwards by the end face outside of upper end, encase a part of permanent magnet side wall.
As one embodiment of the present invention, multiple tooth socket sheet metal mounting grooves is interconnected, multiple tooth socket gold
Belong to piece to interconnect, tooth socket sheet metal and mounting groove correspond, and tooth socket sheet metal is disposably installed to tooth socket sheet metal peace
It puts in slot.
As one embodiment of the present invention, the quantity of the mounting grooves of multiple tooth socket sheet metals and tooth socket sheet metal with forever
The number of magnetic poles of long magnet is identical or reaches the half of number of magnetic poles.
As one embodiment of the present invention, tooth socket sheet metal mounting groove side is equipped with anti-detachment boss in lower casing
Structure.
As one embodiment of the present invention, the thickness of tooth socket sheet metal is identical as the thickness of sheet metal mounting groove, tooth
Plane is formed above slot sheet metal and lower casing.
As one embodiment of the present invention, tooth socket sheet metal determines with a thickness of within the scope of 0.03mm-0.05mm.
As one embodiment of the present invention, above the circular outer diameter and rotor that multiple tooth socket sheet metals is formed forever
The outer diameter of long magnet is identical.
As one embodiment of the present invention, the top and bottom of the through hole of bearing combining part, which form, prevents bearing
The columnar upper end chuck and lower end chuck being detached from.
As one embodiment of the present invention, bearing upper end-face edge and bottom margin be respectively stuck in upper end chuck and
The upper cutting portion of lower end chuck and lower cutting portion.
As one embodiment of the present invention, bracket includes that vertical bending extends downwardly from the edge of lower end bracket
Sidewall portion, above permanent magnet and side a part combines support with the surface of lower end bracket and side respectively.
As one embodiment of the present invention, the thickness of ticker upper end is identical as scale, the upper end of ticker
Surface and lower end rack surface be in same plane.
As one embodiment of the present invention, ticker upper end is combined with the surface for being equivalent to half bracket.
As one embodiment of the present invention, is installed on flexible circuit board to coil and convey electric current and included magnetic transducing
The driving IC of device, stator include two coils, and magnetic sensor can be placed on two hollow middle positions of coil.
As one embodiment of the present invention, the angle between two coils are hollow is two adjacent poles of permanent magnet
Between angle natural multiple value.
As one embodiment of the present invention, there are six poles for permanent magnet, and tooth socket sheet metal is by six or three leaflets
Piece composition is basic point it has been observed that from the central part of coil to the neutral region center of the permanent magnet closed on from axis fixed part
The angle of point is to determine between 11.1 degree ~ 15.6 degree, the angle of magnetic sensor and the permanent magnet neutral region central point closed on
Degree is to determine between 14.4 degree ~ 18.9 degree.
As one embodiment of the present invention, permanent magnet is made of four magnetic poles, and tooth socket sheet metal is by four or two
A vanelets composition is basic point it has been observed that from the central part of coil to the differential gap of the permanent magnet closed on from axis fixed part
The angle of domain central point is to determine between 11.7 degree ~ 14 degree, magnetic sensor and the permanent magnet neutral region central point closed on
Angle be 12 degree ~ 33.3 degree between determination.
As one embodiment of the present invention, permanent magnet, plurality of coils, that tooth socket sheet metal facilitates permanent magnetic is ferromagnetic
The hollow starting point arrangement of the starting point and coil of pole is consistent.
As one embodiment of the present invention, tooth socket sheet metal guarantees the magnetic pole one of permanent magnet when rotor stops operating
It is in line to be listed in above magnetic sensor.
As one embodiment of the present invention, the lower end of axis is inserted into the combined hole in axis fixed part, axis it is upper
End is inserted into no noise and prevents in the upper casing medial center hole of material, so that fixation is unlikely to shake.
As one embodiment of the present invention, circular arc scale is in the 1st half-circle area, along radius 1/4-3/4 dot
At.
The beneficial effects of the present invention are:
According to the present invention, as the component part ticker of rotor, bracket and fixed permanent magnetic on bracket are mounted on
Between iron, thus directly, the firm ticker of indirect method.Holding that can be stable long-time uses vibrating motor is vibrated
Bonding state between son and bracket.When the smart phone of load vibrating motor is fallen, because of the heavier-weight of mobile phone, drop impact
Power can be transmitted on motor, and as representative of the present invention, bracket and ticker sticking structure can bring very strong binding force, even if in the presence of
External thump, ticker will not be detached from from bracket, and other than being connected on the outside of ticker and permanent magnet, bracket and forever
Space between above long magnet is also connected with ticker, therefore is conducive to increase the weight of ticker compared with traditional technology,
Do not increase diameter compared with conventional motor, merely add fraction of thickness, ticker increases part and the half close to bracket
Area is connected, therefore thickness is not thick, can also reach well-content weight.
Make lower casing and tooth socket sheet metal in the way of composite die punching press while being die cut and pasting, most tooth socket metals
Piece is linked together, therefore one-time formed mode pastes in lower casing, to reduce manufacturing cost.
The position of tooth socket sheet metal is assigned, not perforated mode but channel-shaped make, therefore increase the support of lower casing
The upper end of power, lower casing tooth socket sheet metal mounting groove forms anticreep boss, facilitates sheet metal and assigns into lower casing securely
On, to achieve the effect that resistance to high impact forces, convenient for being suitable for weight big smart phone or wearable device.
The area for optimizing tooth socket sheet metal can prevent the phenomenon that rotor floats when motor starting, reduce rotor and upper machine
Friction noise between shell improves stopping speed when rotor rotation, to eliminate residual vibration.Guarantee that rotor keeps one in rotation
Fixed levelness, there is no need to place noise-proofing slide plate, gasket etc..
Detailed description of the invention
Fig. 1 is the exploded view of tradition BLDC motor.
Fig. 2 is the sectional view of tradition BLDC motor.
Fig. 3 is the BLDC vibrating motor exploded view according to the embodiment of the present invention.
Fig. 4 is according to the sectional view after the assembling of the BLDC motor of the embodiment of the present invention.
Fig. 5 be according to the casing of BLDC vibrating motor of the embodiment of the present invention, the ticker of assembling and the stator of assembling with
And the exploded view mutually after assembling.
Fig. 6 is to indicate the assembling process of stator according to the embodiment of the present invention.
Fig. 7 is to indicate the assembling process of ticker according to the embodiment of the present invention.
Fig. 8 to Figure 10 is to illustrate the method that lower casing and tooth socket sheet metal are installed according to the embodiment of the present invention.
Figure 11 be illustrated according to the embodiment of the present invention it is mutual between magnetic field that the magnetic field of permanent magnet and coil generate
The principle of effect and permanent magnet rotation.
When Figure 12 is using sextupole permanent magnet and six lobulate tooth socket sheet metals, coil (plays rotor to stop
Returned to when only and do not start effect a little), tooth socket sheet metal, Hall element, permanent magnet Rankine-Hugoniot relations.
Figure 13 be using sextupole permanent magnet and six lobulate tooth socket sheet metals when, coil, tooth socket sheet metal,
Optimal alignment relationship between Hall element, permanent magnet.
Figure 15 be using quadrupole permanent magnet and four lobulate tooth socket sheet metals when, coil, tooth socket sheet metal,
Optimal alignment relationship between Hall element, permanent magnet.
Figure 16 be using quadrupole permanent magnet and two lobulate tooth socket sheet metals when, coil, tooth socket sheet metal,
Optimal alignment relationship between Hall sensor, permanent magnet.
The explanation of symbol
100:BLDC vibrating motor 110: lower casing
120,120-1,120-2,120-3: tooth socket sheet metal 130: axis
135: gasket 140: double-sided adhesive
150: flexible circuit board (PCB) 160: capacitor
170: driving IC 175: sensor
180: coil 190: spindle
200: permanent magnet 205: neutral region
210: bearing 220: ticker
230: bracket 240: rotor
260: casing.
Specific embodiment
In the embodiment of the present invention illustrated herein, the explanation of specific properity is only limitted to explain the present invention,
There are many embodiments of the present invention, it is not limited to herein.
The present invention can carry out a variety of variations, possess a variety of forms of implementation, specific embodiment and attached drawing drawing are specifically
It is bright, it is not intended to limit the specific beginning form of invention, it can be understood as all in Design Conception of the invention, technical scope
Transformation, equivalent and substitute.
First and second equal terms can be used for illustrating the constituent element of multiplicity, but above-mentioned constituent element is not limited to above-mentioned use
Language, above-mentioned term can distinguish different constituent elements.Under the premise of not departing from interest field of the invention, the first composition is wanted
Element can be named as the second constituent element, and the second constituent element can also be named as the first constituent element.
When constituent element is with element " connection " or " stickup " is alternatively formed in statement, it may directly contact to alternatively form and want
Element or can be understood as it is intermediate there may be other constituent elements, on the contrary, if in statement constituent element directly with alternatively form
When element " being directly connected to " or " directly pasting ", it can be understood as other constituent elements are not present in centre, can describe to constitute and want
The form of expression of plain relationship be " ~ between " and " be exactly ~ between " or " being close in ~ " and " being directly close in ~ " etc. it is applicable similarly
It explains.
Term used in present patent application only explains specific example and is used, and does not lie in the limitation present invention.Odd number
Statement is other than Wen Yizhong determination is pointed out, comprising plural number, " comprising ", " possessing " etc., terms only referred to feature, number in present patent application
One or more differences are not repelled in word, scale, movement, constituent element, component or the presence of above-mentioned factor combination part
Feature, number, scale, movement, constituent element, component or the presence of above-mentioned factor combination part or it is additional existing may
Property.
Unless otherwise defined, the understanding of technology or scientific term and the understanding of those skilled in the art that the present invention uses is
It is identical.Generally use and dictionary defined in term, can be construed to and state equivalent in meaning in relevant technical literature, remove
It is explicitly defined in non-present patent application, the excessively meaning of idealization or formality cannot be construed to.
For the ease of implementing the present invention, elaborate with reference to the accompanying drawing.
Fig. 3 is the decomposing state of the component parts of BLDC vibrating motor (100) in the embodiment of the present invention, and Fig. 4 is after assembling
BLDC vibrating motor (100) sectional view, BLDC vibrating motor include stator (190), rotor (240), storage it is above-mentioned two
The casing (110,260) that assembly (190,240) plays a protective role.
Upper casing (260) is that shell-like and bottom are open, and upper casing (260) is by circular upper surface (262) and from upper end
The side (264) of face (262) edge-perpendicular downward bending forms.
Lower casing (110) round plate (112) of sealing process and from round plate by covering upper casing (260) bottom
(112) the horizontal-extending protrusion in edge (113) forms.
Lower casing (110) is covered on upper casing (260) open bottom, the disk of upper casing (260) and lower casing (110)
After portion (112) combines, connected with the mode that laser welding or tin cream weld, the side wall (264) of upper casing (260) is at least formed
One card slot (266), accordingly at least one chuck (114) of the edge of lower casing (110) round plate (112), card slot
(266) match with chuck (114), upper casing (260) and lower casing (110) combine, when external force rotates, upper casing (260) and
Lower casing (110) is rigidly secured together.
Upper casing (260) and lower casing (110) form the space of stator and rotor storage described below after combining.Under
Casing (110) round plate (112) center is equipped with axis fixed part (115), and axis fixed part (115) is cylindrical shape protruding upward,
There is the axis combined hole (118) for being inserted and fixed axis (130) in centre, and centered on axis fixed part (115), property is distributed with radially outward
Multiple tooth socket sheet metal mounting grooves (116).
Tooth socket sheet metal mounting groove (116) is the position that tooth socket sheet metal (120) are placed, with traditional approach through hole (37)
Shape is different, and there is the recess that can place tooth socket sheet metal (120) on lower casing surface, forms channel-shaped, tooth socket sheet metal mounting groove
(116) consistency of thickness of the depth preferably with tooth socket sheet metal (120) described below.Shown in drawing, six tooth socket sheet metals
Mounting groove (116) is separated by 60 degree of angles, lines up increased radioactivity, centered on axis combined hole (118), forms shape interconnected
State.Although drawing shows that the quantity of tooth socket sheet metal mounting groove (116) is six, this quantity is only citing, can be using not
Same quantity, tooth socket sheet metal mounting groove (116) quantity are identical as the quantity of tooth socket sheet metal blade (122).
BLDC vibrating motor (100) includes the fixed stator (190) for being assembled in casing (110,260) inside, stator (190)
Rotary shaft is provided for rotor (240), the electric current accessed from external power supply forms electromagnetism, generates the permanent magnetic of rotation rotor (240)
The electromagnetic force of iron (200).
Stator (190) can by tooth socket sheet metal (120), axis (130), flexible circuit board (PCB, 150), be pasted onto it is soft
Circuit board (150) capacitor (160) above, driving IC(170), multiple coils (180), gasket (135) composition.Shown in drawing,
Two air core coils (180) are symmetrical centered on axis (130), and mutual interval angles are 180 degree, can place more
More coils.Driving IC(170) in the built-in size by magnetic speed or magnetic field be converted to electricity signal magnetic sensor
(magnetic sensor, 175), for example, the conspicuous of magnetic force direction or intensity can be tested with Hull effect (hall effect)
You play the role of magnetic sensor by element (hall element), naturally it is also possible to use other kinds of magnetic sensor.
When rotor (240) rotates, if with stator (190) for object of reference, the position of magnetic pole of permanent magnet (200) becomes
Change, the coil conduction magnetization of the corresponding stator of position of magnetic pole (190) of the permanent magnet (200) on rotor (240), Cai Nengbao
The electromagnetic force to interact between card permanent magnet (200) and coil (180) is kept to direction of rotation, so that rotor is also to one
Direction persistently rotates.If under rotor (240) halted state, the magnetic field center and rotor of stator (190) and coil (180)
(240) magnetic field center of permanent magnet (200) is consistent, when vibrating motor (100) starts, will lead to rotary shaft away from faint, not
Starting can be efficiently accomplished.That is during the magnetic sensor (175) of induction magnetic pole is located between the pole N and the pole S of permanent magnet (200)
When property region (Neutral Zone), the magnetic pole of permanent magnet (200) can not be incuded, and generate not starting a little for rotor (240).
Rotor (240), which is located at, in order to prevent does not start a little, generates cogging torque (cogging torque) and location torque
The tooth socket sheet metal (120) of (detent torque) assigns into lower casing (110), and the effect of tooth socket sheet metal (120) is to keep away
The neutral region for exempting from permanent magnet (200) is Chong Die with magnetic sensor (175).
The material for generating the tooth socket sheet metal (120) of tooth socket torque is magnetic substance, tooth socket sheet metal (120) and tooth socket metal
Piece mounting groove (116) is the shape to match each other, and tooth socket sheet metal (120) is accommodated in the placement of tooth socket sheet metal in a manner of indentation
In slot (116), as shown in figure 3,6 tooth socket sheet metal blades (122), are separated by 60 degree of angles, radioactivity shaped formation is simultaneously connected,
Intermediate position forms the through hole (124) of insertion axis fixed part (115).
The thickness of tooth socket sheet metal (120) is preferably identical as the depth of tooth socket sheet metal mounting groove (116), tooth socket sheet metal
The upper surface of the tooth socket sheet metal (120) and lower casing (110) assigned in mounting groove (116) keeps same plane.Of the invention
In example, the thickness of tooth socket sheet metal (120) is within the scope of 0.03mm-0.05mm, if thickness is more than above-mentioned value, it is possible to occur
Vibrating motor (100) does not start, conversely, if thickness is smaller than above-mentioned value, when vibrating motor (100) starts, because of the bullet of rotor (240)
Jumping power pops up rotor (240), collides with upper casing (260) and generates noise.
The area no less important of tooth socket sheet metal (120) in the embodiment of the present invention, recommends entire tooth socket sheet metal
(120) outer diameter of the border circular areas formed is preferably identical as the outer diameter of permanent magnet (200) of rotor (240), such tooth socket gold
The gravitation belonged between piece (120) and permanent magnet (200) is most strong.
1 to 1 pair of number of poles of the permanent magnet (200) that blade (122) quantity of tooth socket sheet metal (120) is preferably chatted with after
It answers, illustrated example of the present invention, blade (122) number of the corresponding tooth socket sheet metal (120) of the permanent magnet (200) of two-way sextupole is also
Six, the attractive interaction of tooth socket sheet metal (120) and permanent magnet (200) can be improved, turn when preventing vibrating motor (100) from starting
The bounce of son.In traditional technology in order to prevent noise caused by rotor bounce and slide plate (14) or gasket are set, but
The present invention is without being applicable in.According to circumstances different, the blade (122) of tooth socket sheet metal can be with the one of permanent magnet (200) number of poles
Half quantity is constituted.
Axis (130) is the smooth cylindrical shape in surface, and lower end is inserted into axis fixed part (115) afterwards and lower casing
(110) fixed, end is inserted into the axial trough at upper casing (260) upper surface (262) medial center position thereon, is played support and is made
With preventing from shaking.
The shape of flexible circuit board PCB (150) is similar to lower casing (110), can cover the round plate of lower casing (110)
(112) and the blade of tooth socket sheet metal (122), prolonged by the through hole (156) of middle part and winding displacement circuit portion and horizontal direction
It stretches and the portion of terminal (154) that external power supply is connected to winding displacement circuit portion (152) is formed.Winding displacement circuit portion (152) is pasted above
Driving IC (170) and the protection driving IC(170 under overvoltage) electronic components, these electronic components such as capacitor (160) pass through
Electric wire is connected with each other, and drives IC(170) receive the confession of generation driving current and control to the electric current of coil (180) after external power supply
It answers, to control the driving of rotor (240).PCB(150 it) can be made of soft bottom plate.
Multiple coils (180) are pasted onto PCB(150) above, and it is symmetrical with permanent magnet (200), pass through the driving that is connected
IC(170 mode) powers on.
PCB(150 it) is fixed on and tooth socket sheet metal piece leaf is installed for medium with the sickers such as adhesive or adhesive tape (140)
(122) the upper surface of lower casing (110), using double-sided adhesive as the example of sicker (140) shown in Fig. 3.PCB (150) and double-sided adhesive
(140) having on can be by the through hole (156,142) of axis (130).
Cricoid gasket (135) is coated at axis (130), is put on axis fixed part (115), to guarantee rotor (240)
Bearing (210) rotation.In order to be not directly contacted with gasket (135) with winding displacement circuit portion (152), axis fixed part (115) is higher by PCB
(150) winding displacement circuit portion (152) are placed in the gasket (135) of axis fixed part (115) above and are higher by coil (180), driving IC
(170) etc. the element of stator (190) is formed, to hold up rotor (240).
BLDC vibrating motor (100) includes the rotor (240) combined with stator (190) for being placed in casing internal, is turned
Sub (240) are firmly linked together by elements such as bracket (230), ticker (220), bearing (210), permanent magnets (200).
Shown in structure such as Fig. 3, Fig. 4 and Fig. 7 (A) of bracket (230), bracket (230) is located at the top of rotor (240),
The leakage for the flux upward direction for preventing permanent magnet (200) from generating, to guarantee that the element group for forming rotor (240) becomes one
Body, magnetic flux leakage, the material of bracket (230) are advisable in order to prevent with magnetic material.
Cylindrical bearing engaging portion (232) that bracket (230) is penetrated through by vertical direction and on bearing combining part (232)
End combines and horizontal bracket extending to the horizontal direction (233,234) is constituted.In terms of axis (vertical direction) direction, horizontal bracket
(233,234) shape is subcircular.The half-circle area of horizontal bracket (233,234) forms scale along certain arc-shaped edges, with
Scale is that battery limit (BL) divides upper end bracket (233) and lower end bracket (234), scale can with the 1/4-3/4 point of half-circle area, along
Circular arc is formed, and circular arc is possible to as semicircle, and the height of scale should be with the thickness of ticker (220) upper end described below
It spends identical.
Lower end bracket (234) is possible to the lower end bracket side wall portion extended comprising the downward axis direction small distance in its edge
(235) it (referring to Fig. 7 (A)), lower end bracket side wall portion (235) and the side of permanent magnet (200) are pasted in a welding manner, with
Just guarantee that permanent magnet (200) stronger be pasted on bracket (230) (describes) behind detailed content, if lower end bracket side
Wall portion (235) is too short, in fact it could happen that insufficient with the binding force of permanent magnet (200) side；It is too long, ticker may be offset
(220) weight weakens eccentric force.Therefore lower end bracket side wall portion (235) size is to cover the 1/ of permanent magnet (200) side
It is advisable.
The centre of bearing combining part (232) has through hole (236), the direction of the central axis of this through hole (236) and axis
(130) direction is consistent, and bearing (210) is cylindrical shape, and bearing (210) center forms through hole (212) towards axis direction, along
The edge of bearing (210) above forms cutting portion (214), forms lower cutting portion (216), bearing along lower edge portion
(210) through hole (236) for being inserted into bearing combining part (232) is inner, is assembled into one with bracket (230) convenient for rotation.
Be inserted into order to prevent bearing combining part (232) bearing (210) vertically be detached from, bearing combining part (232) it is upper
There are upper end chuck (237) and lower end chuck (238) in end and lower end respectively.Upper end chuck (237) can be added by way of punching press
Work is formed, and chuck (237) shape in upper end is circle, blocks entirely upper cutting portion (214), the upper surface of bearing (210) cutting portion
(214) it hangs in upper end chuck (237), bearing (210) is prevented to be upwardly separated from.The lower cutting portion (216) of bearing (210) is hung over down
It holds in chuck (238), prevents bearing (210) to be detached from downwards, got over the surface area of the bearing (210) of gasket (135) joint
Small more to advantageously reduce friction loss, cutting portion (216) helps to reduce friction under bearing.
Ticker (220) includes the table on the inside of the side of a part of bearing combining part (232) and upper end bracket (233)
The edge of upper end (222) and upper end (222) that face is mutually pasted extends downward is formed by sidewall portion (224).Ticker
(220) former material uses tungsten or is advisable by the production of the high-density alloy of main material of tungsten.Sidewall portion (224) is arc-shaped, is in bending
Strip with angle.Method of attaching between upper end (222) and upper end bracket (233) can use welding manner or gluing side
Formula.For the maximization of eccentricity, the upper end (222) of ticker (220) can be made similar horse-hof shape, and and bracket
(230) the half circular area that is equivalent to is connected.In order to facilitate ticker (220) weight and ticker (220) and upper end branch
The maximization of degree of adhesion between frame (233), ticker (220) upper end (222) most preferably uses semi-circular shape, and can cover
Upper end bracket (233) surface major part area is advisable.
In order to guarantee steadily to assemble permanent magnet (200), the surface of upper end (222) is interior with lower end bracket (234)
Side surface is advisable in approximately the same plane, it is therefore necessary to determine the height and lower end bracket of corresponding upper end (222)
(234) scale, the height of lower end bracket (234) between etc..
Permanent magnet (200) is ring-type, and the pole N and the pole S are alternately arranged.In order to be bonded securely with ticker, permanent magnet
(200) upper end, which is fabricated to plane, to be advisable, and there are non-magnetic differential gaps between the adjacent pole N and the pole S of permanent magnet (200)
Domain (NEUTRAL ZONE) (205) (referring to Fig.1 1), the width of neutral region (205) is about within the scope of 0.2-0.6mm, forever
Long magnet (200) is packed into from the periphery of bearing combining part (232), a part of upper surface and ticker (220) upper end (222)
Surface combines, and remaining a part passes through the shapes permanent magnets such as welding or viscose glue in conjunction with lower end bracket (234) inner surface
(200) it is pasted together securely with bracket (230).
In addition, the lateral surface of permanent magnet (200) is connected with lower end bracket side wall portion (235), it is this be connected facilitate plus
Bonding force between strong permanent magnet (200) and bracket (230), the medial surface and permanent magnetic of ticker (220) sidewall portion (224)
It also can use the substances such as adhesive between iron (200) lateral surface to be bonded, the binding force between reinforced element.
Ticker (220) in the present invention increases the upper end (222) of ticker (20) compared with traditional technology, because
This increases weight, while increasing shock momentum.The upper end and side of permanent magnet (200) all with bracket (230) indirectly or
Directly to connection, to strengthen the degree of adhesion of permanent magnet (200) Yu bracket (230), while strengthen ticker (220) with
Degree of adhesion between bracket (230).
In traditional technology, only the upper end of ticker (20) is connected with bracket (16), and connected area is also small.This
Invention is compared with traditional technology, and upper end (222) large area of ticker (220) is connected with upper end bracket (233), and upper end
Portion (222) is located between upper end bracket (233) and permanent magnet (200) (being pasted on bracket (230) securely), with hamburger shape
It is connected.Therefore ticker of the invention has stronger adhesion strength compared with traditional technology, so that ticker (220) is secured
Ground is adhered on bracket (230), even if also can guarantee stable bonding state there are external impact.
Fig. 5 respectively illustrates the rotor (240) of assembling and stator (190) is included in state before and after casing (260,110), such as
Described above, ticker (220), permanent magnet (200), bearing (210) are securely joined with and are integrally formed with bracket (230),
It is relatively heavier at ticker (220), to form the rotor (240) with eccentric rotary center.The bearing of rotor (240)
(210) it is inserted on the outside of the axis (130) of stator (190) by through hole (236).The bottom surface of bearing (210) is placed in gasket
(135) above, in order to reduce friction loss when rotation, gasket (135) and bearing (210) surface are very smooth.Because of coil
(180) it is generated under interaction between the magnetic field in the magnetic field and permanent magnet (200) that generate, generation makes rotor (240) towards one
The electromagnetic force of direction rotation.When rotor (240) is rotated centered on axis (130), because of the bias of center of gravity, thus produce along with
The rotation of vibration.
The assembling sequences of lower casing (110) and stator (190) as shown in fig. 6, the sequence of the element of assemble rotor (240) such as
Shown in Fig. 7, Fig. 8 to Figure 10 illustrates specific procedure and processing method that tooth socket sheet metal (120) is assigned on lower casing (110).
Lower casing (110) and tooth socket sheet metal (120) are needed in order to assemble stator (190), the effect of lower casing (110) is that protection is internal
Element and fixing axle (130) and tooth socket sheet metal (120).
The lower casing of traditional technology production, centre forms axis fixed part (38), for the ease of vertical fixed shafts
(26), axis fixed part (38) has been centrally formed combined hole, and along axis fixed part (38) lower casing (36) disk position, there are assemblings
The sheet metal through hole (37) of tooth socket metal plate (34), it is therefore desirable to tooth socket metal plate (34) and lower casing (36) individually assemble,
To increase manufacturing cost.And through hole (37) are formed in lower casing (36), the support force of lower casing (36) necessarily becomes smaller,
Lower casing (36) is easily-deformable when applied shock, and the inside element is caused to be easy damaged or deformation, and tooth socket metal plate (34) occur under
The combination relaxation of casing or break-off, and the stopping of vibrating motor (10) slows, suitable for application in reaction speed
It spends on demanding smart phone.
To solve the above-mentioned problems, in the embodiment of the present invention, tooth socket sheet metal mounting groove is formed in lower casing (110)
(116), slot over-assemble tooth socket sheet metal (120), Fig. 8 to Figure 11 illustrate the above process.
When making lower casing (110), 2 times of material about thicker than tooth socket sheet metal (120), i.e. nonmagnetic material are used
The material of the soft series of SUS304 makes lower casing (110), cuts lower casing (110) shape, reprocessing packet with Sheet Metal Forming Technology
The axis fixed part (115) of combined hole containing axis (118).
The tooth socket sheet metal mounting groove (116) in punching machine forging processing lower casing (110), tooth socket sheet metal can be used
(120) mode that can be equally applicable in die cut is processed, and the above method is processed in the tooth socket sheet metal mounting groove (116) to be formed
It is inserted into tooth socket sheet metal (120) (referring to Fig. 8).
The combination of lower casing (110) and tooth socket sheet metal (120) can use composite die mode, i.e. two molds
It is die cut lower casing (110) simultaneously and the mode of tooth socket sheet metal (120) is processed, that reduces tooth socket sheet metal assigns expense.And
In order to reinforce the support force of lower casing (110), the through hole of tooth socket sheet metal (120) is not set separately on lower casing (110), and
It is the material that lower casing (110) and tooth socket sheet metal (120) use different-thickness, forges processing tooth by the way of punching press cross cutting
Slot sheet metal mounting groove (116), because assembling tooth socket sheet metal by force inside the thinning mounting groove (116) of forging processing thickness
(120), the method is that same punching machine is made using two molds, is fulfiled assignment by the way of composite die, Ke Yibao
Demonstrate,prove stay in grade, save the cost.
Tooth socket sheet metal (120) is assembled into tooth socket sheet metal mounting groove (116), the tooth socket sheet metal peace of lower casing (110)
It puts slot (116) sidewall upper portion and forms the anti-detachment boss of tooth socket sheet metal to the part of the inboard protrusion of mounting groove (116)
(119).It is pressurizeed to lower casing (110) upper end with arrow direction, is formed along whole edges of tooth socket sheet metal mounting groove (116)
The anti-detachment boss of tooth socket sheet metal (119), and expand the outer diameter (i.e. r2 > r1) of lower casing (110) axis fixed part (115), make
The internal diameter of itself and tooth socket sheet metal (120) through hole (124) is adjacent to by force, prevents tooth socket sheet metal (120) from sliding, so as to secured
Ground is fixed on axis fixed part (115), (referring to Fig. 9).
The lower end surface and upper surface of lower casing (110) are gradually suppressed simultaneously, protrusion height are reduced, so as to tooth socket sheet metal
(120) it is adjacent to securely lower casing (110), the tooth socket sheet metal that tooth socket sheet metal (120) is stuck in lower casing (110) is anti-detachment convex
On platform, the upper surface of tooth socket sheet metal (120) and the upper surface of lower casing (110) maintain same plane (referring to Figure 10), therefore
Tooth socket sheet metal (120) is stronger to be fixed on lower casing (110).
Tooth socket sheet metal (120) and the above-mentioned clinging structure of lower casing (110) have following advantages, tooth socket sheet metal (120)
It, can disposable easy completion installation using more metal blade integral structures；The tooth socket sheet metal being assembled as above
(120) and lower casing (110) stable structure, even if applied shock, tooth socket sheet metal (120) will not be from lower casing (110)
It is detached from；And quantity Matching permanent magnet (200) number of poles of whole metal blades of tooth socket sheet metal (120), to strengthen tooth
Gravitation of the slot sheet metal (120) to permanent magnet (200).
Manufactured tooth socket sheet metal (120) is fixed to the axis knot of the axis fixed part (115) of lower casing (110) according to the above method
It closes in hole (118), it is fixed (with reference to (B) and (C) of Fig. 6) to be pressed into axis (130) by force.
The upper end sticking two-faced adhesive tape (140) of lower casing (110) and tooth socket sheet metal (120) is to fix PCB(150) (ginseng
Examine (C) and (D) of Fig. 6).
On PCB with adhesive paste coil (180), and and PCB(150) winding displacement circuit portion (152) welded
(with reference to (E) and (F) of Fig. 6) provides driving electricity to coil will pass through the additional power supply of portion of terminal (154) by driving IC
Source.
The group of ticker (240) turns over journey with reference to Fig. 7.
Bracket (230) is processed according to preceding method first, is especially emphasized, bearing (210) falls off in order to prevent, in bearing knot
Upper end chuck (237) are made in the upper end in conjunction portion (232).
Ticker (220) are pasted on ready bracket (230), ticker is placed in upper end bracket (233) surface, in order to
It is fixed, using the technology for applying such as laser welding, (Fig. 7 (A) (B)).
Cylinder-shaped bearing (210) is pressed into combined hole on bracket (230) bearing combining part (232) by force to fix,
After bearing (210) indentation is fixed, in order to prevent there is a phenomenon where bearing (210) because external impact is detached from, bearing combining part (232)
Lower end carries out machining, forms anti-detachment lower end chuck (238), upper end chuck (237) and lower end chuck (238) are played and prevented
The effect that bearing (210) is detached from up and down (with reference to (B) and (C) of Fig. 7).
Permanent magnet (200) is fixed in vibration sub (220) and lower end bracket (234) after bearing indentation.That is vibration
Permanent magnet (200) are pasted on the surface of upper end (222) and the surface of lower end bracket (234) and the inside of sidewall portion (235),
It can be pasted using modes such as welding or gluings (with reference to (C) and (D) of Fig. 7).Permanent magnet is placed on and is pasted on side afterwards above
Bracket (230) surface between wall portion (235), to complete the assembling of rotor (240).
The stator (190) and rotor (240) of assembling, as shown in figure 5, the bearing (210) of rotor (240) is coated at stator
(190) it on axis (130), can be rotated after bearing (210) and axis (130) combination, the bottom surface of bearing (210) is placed in stator
(190) gasket (135) is above.Bearing (210) draws around fixed axis (130) and gasket (135) rotation in order to reduce friction
The lost motion risen, it is proposed that required parts surface wants smooth.
Upper casing (260) are covered above the assembly of stator (190) and rotor (240), upper casing (260) and lower casing
(110) after being pasted with the mode of laser welding, the assembling of vibrating motor (100) can be completed (with reference to Fig. 5).
Assembling sequence described above is only illustrated, sequencing not necessarily, even if even reversed order.Under
After portion of terminal (154) the connection external power supply of casing (150), IC(170 is driven) driving power is supplied to coil (180), thus
Two coils (180) form magnetic field, and become electromagnet.As shown in figure 11, electric current is conveyed to two coils, is allowed to axis fixed part
(115) when the pole S and the pole N are formed at the top of left side coil (180) and right side coil (180), permanent magnet (200) will such as according to
The arrow direction stress of Figure 11 mark, therefore permanent magnet (200) rotates clockwise.If permanent magnet (200) is suitable
Clockwise rotation is 60 degree dynamic, and the left side coil (180) and right side coil (180) for being allowed to axis fixed part (115) distinguish shape above
When at the pole N and S extremely reversed, permanent magnet (200) clockwise direction stress identical as above situation.Two coils (180) are formed
The first magnetic field and rotor (240) the second magnetic field interaction for being formed of permanent magnet (200), generate gravitation and repulsion, because
This generates the rotary force that rotor (240) rotate in one direction.Under the action of rotary force, rotor (240) is with stator (190) axis
It (130) being capable of high-speed rotation centered on.
When driving power is interrupted, rotor (240) will stop operating, when rotor (240) stops operating, tooth socket sheet metal
(120) left side field and right side field will form the adjacent pole N of permanent magnet (200) and the pole S (or the pole S and the pole N), if magnetic
Property sensor (175) is located at the neutral region (205) of permanent magnet (200), and vibrating motor (100) will not start.Tooth socket gold
Belonging to piece (120) can prevent the halt of vibrating motor (100) on non-start up point.Vibration motor (100) stops in order to prevent
On non-start up point, for rotor (240) when stopping rotating, the pole N or the pole S should not be positioned at the neutral regions of permanent magnet (200)
(205), should accurately be arranged in driving IC(170) magnetic sensor (175) above.Following example illustrates
State situation.
Assuming that the producing method of electromagnetic force, using two-way sextupole permanent magnet (200) and two coil (180) when, six
A magnetic pole is separated by 60 degree of arrangements along cylinder direction, two coils (180) of stator (190) centered on axis fixed part (115),
Opposite direction arrangement.The drive of included magnetic sensor (175) is installed on the angle 180 degree half point position between two coils (180)
Dynamic IC (170), centered on axis fixed part (115), the angle between magnetic sensor (175) and each coil (180) may
It is 90 degree (with reference to Figure 12 and Figure 13).
As shown in figure 12, the rotor (240) of vibrating motor (100) be located at do not start a little, the center of coil (180) with close on
When angle is 30 degree between the center of tooth socket metal blade (122), IC(170 is driven) included magnetic sensor (175) He Lin
Angle is 0 between the center of close tooth socket sheet metal blade (122), therefore in magnetic sensor (175) and permanent magnet (200)
Property region (205) will be overlapped, it may occur that vibrating motor (100) is located at the problem on non-start up point.
Shown in Figure 13, vibrating motor (100) are prevented to be in the design of above-mentioned state, according to this specification, permanent magnet
(200) the breadth W of neutral region (205) is made 4mm, the center of coil (180) center and tooth socket sheet metal blade (122) it
Between angle can be fabricated to 12.5 degree, magnetic sensor (175) and permanent magnet (200) neutral region (205) are intermediate at this time
Angle may be 17.5 degree between point, obtain 17.5 degree after 30 degree of half of the angle (60 degree) of 1 magnetic pole subtract 12.5 degree, according to
Such design, after magnetic sensor (175) is beyond the neutral region (205) of permanent magnet (200), with permanent magnet (200)
Magnetic pole sequence, to perceive magnetic pole, the center of tooth socket sheet metal blade (122) exceeds the differential gap of permanent magnet (200) at this time
Domain, time point and coil (180) hollow dots of magnetic pole are consistent, thus start vibrating motor when, guarantee permanent magnet (200) with
Electromagnetic force between coil (180) maximizes, to obtain big starting wheelbase.
If the area of tooth socket sheet metal (120) is small, when vibrating motor starts, because of the permanent magnet (200) of rotor (240)
Graviational interaction, tooth socket sheet metal (120) can pop up, and collide with upper casing (260) and noise occurs.Traditional technology is to understand
Certainly noise problem has used noise-proofing slide plate or gasket.But in the present invention, the piece number of tooth socket sheet metal blade (122) and permanent
The number of poles of magnet (200) is consistent, and is made 6, can be prevented there is no need to separately installing slide plate or gasket also recited above
Noise problem fully ensures that the piece number of tooth socket sheet metal blade (122), it is ensured that the rotor rotated centered on axis (130)
(240) it is rotated according to horizontal plane, is conducive to vibrating motor (100) and extends the service life and eliminate noise.
Permanent magnet (200) are equivalent to by shown in Figure 14, the blade (122-1) of tooth socket sheet metal (120-1) can be made
Half quantity i.e. 3 of number of poles, 3 tooth socket sheet metal blades (122-1) are separated by 120 degree and are connected.In order to avoid permanent magnet
(200) it is located at not start and is a little designed to exceed the neutral region (205) of permanent magnet (200) even if magnetic sensor (175)
Magnetic pole can be incuded.When the piece number of the blade (122-1) of tooth socket sheet metal is designed to the half quantity of magnetic pole, in coil (180)
The blade of angle, magnetic sensor (175) and tooth socket sheet metal between the heart and the neutral region (205) of permanent magnet (200)
When angle between the center (122-1) is by being respectively 12.5 degree and 17.5 degree shown in Figure 13, big starting wheelbase can be obtained.
Shown in Figure 13 and Figure 14, two coils (180) of stator it is hollow between angle can be according to permanent magnet (200)
The natural multiple of angle determines between two adjacent poles, and permanent magnet (200) is there are six magnetic pole, and angle is 60 degree between magnetic pole,
Therefore two coils (180) it is hollow between angle in addition to the 180 degree in example, it is also possible to become 60 degree or 120 degree.
The number of magnetic poles of permanent magnet (200) is six in example above-mentioned, but as shown in Figure 15 and Figure 16, can also be used
The permanent magnet (200-1) of four magnetic poles.
Blade (122-2) quantity of tooth socket sheet metal shown in Figure 15 (120-2) is four, is equal to number of magnetic poles.Tooth socket
Four blades of sheet metal (120-2) are separated by an angle of 90 degrees and are connected, and the angle between four magnetic poles of permanent magnet (200-1) is 90
Degree, the natural multiple that the angle between two coils (180) are hollow is 90 degree, as shown in Figure 15, Figure 16, two coils (180)
Angle between hollow is 90 degree, and configures by adjacent direction that magnetic sensor (175) can be located in two coils (180)
Between opposite.In order to generate big wheelbase, the neutral region (205) at the center of coil (180) and the permanent magnet (200) closed on
Angle between intermediate point can be set to 12.5 degree, the angle between sensor (175) and adjacent neutral region (205) intermediate point
Degree can be set to 32.5 degree, and the half-angle of a magnetic polar angle i.e. 45 degree, which cut 12.5 degree, can be obtained 32.5 degree.
As shown in figure 16, blade (122-3) quantity of tooth socket sheet metal (120-3) is equivalent to the half of pole number, figure
Shown in 15, the setting of two coils (180) and magnetic sensor (175), two tooth socket sheet metals (120-2) are separated by 180 degree angle
It is connected.As above design, angle design between coil (180) center and adjacent permanent magnet (200) neutral region at
It 12.5 degree, when angle design between sensor (175) and adjacent neutral region (205) central point is at 32.5 degree, can obtain
To big wheelbase.
As described above, neutral region (205) breadth (W) 4mm of permanent magnet (200) is the numerical value in example, Ke Yixuan
0.2-0.6mm is selected, optimal values are to determine within the scope of 0.2-0.5mm.Select six magnetic pole permanent magnets (200), such as Figure 13 or
Shown in Figure 14, when design neutral region (205) breadth (W) is 0.2mm, the centre and adjacent permanent (200) of coil (180)
Neutral region (205) central point between angle can use 15.6 degree, magnetic sensor (175) and adjacent permanent magnet
(200) neutral region (205) intermediate point angle can use 14.4 degree, big starting wheelbase available in this way, if neutral
When the breadth (W) in region (205) is designed to 0.5mm, between the central point of coil (180) and the intermediate point of neutral region (205)
Angle design at 11.1 degree, between sensor (175) and neutral region (205) intermediate point of adjacent permanent magnet (200)
Angle use 18.9 degree when, available big wheelbase.
Using four magnetic pole permanent magnets (200-1), as shown in Figure 15 or Figure 16, the breadth (W) of neutral region (205) can
To be designed between 0.2-0.5mm, at this time between coil (180) center and the neutral region (205) of adjacent permanent (200)
Angle can use 11.7-14 degree, magnetic sensor (175) and adjacent permanent magnet (200) neutral region (205) are intermediate
When angle between point uses 12.5-33.3, available big starting wheelbase.
It is that reference is illustrated that above content, which is with embodiment, and correlative technology field practitioner is understood that without departing from this
In the thought or territory of patent of invention, the present invention can be changed or modified with kinds of schemes.
Present invention may apply to mobile phone, portable game machine, earphone, the furnishings of application BLDC vibrating motor etc. are small
In type electronic product.
Claims (17)
1. a kind of brushless DC vibrating motor, the brushless DC vibrating motor is the rotor of gravity center eccentric in conjunction with stator
Afterwards, it is accommodated in casing, the electricity formed under the magnetic field of electromagnetic force of said stator generation and the magnetic field interaction of permanent magnet
Under magneticaction, rotates rotor and generate vibration；
The casing is made of the upper casing and lower casing of shell-like, and the middle part of the lower casing has axis fixed part, axis fixed part
Around have multiple tooth socket sheet metal mounting grooves；Stator is made of axis, tooth socket sheet metal, flexible circuit board, coil and gasket, institute
State the axis fixed part that axis is perpendicularly fixed at lower casing；The tooth socket sheet metal includes multiple blocky blades, and tooth socket sheet metal is assigned
It is located in tooth socket sheet metal mounting groove to prevent rotation stop and does not start a little, tooth socket torque occurs；The flexible circuit board with assign
The lower casing of tooth socket sheet metal is mutually pasted, and provides electric current using external power supply for rotor rotation；The coil has multiple, installation
Above flexible circuit board, during having driving power, play the role of electromagnet；The gasket is covered is placed in axis on axis
Fixed part, to support rotor to rotate；
The rotor is made of bracket, bearing, permanent magnet and ticker, and the bracket is divided into upper end using arc-shaped scale as boundary
The circular horizontal plane centre of bracket and lower end bracket, bracket is equipped with bearing combining part；The bearing indentation is in bearing combining part
Through hole in；The permanent magnet is the permanent magnet of the pole N and the extremely alternately arranged annular of S, is fixed on the bracket of lower end；Institute
State ticker to be made of high specific gravity substance, be divided into upper end and sidewall portion, upper-end part of driving between upper end bracket and permanent magnet,
It is mutually pasted with hamburger shape, sidewall portion is extended downwards by the end face outside of upper end, encases a part of permanent magnet side wall；Institute
State lower end bracket side wall portion covers permanent magnet side 1/4 to 3/4；
The top and bottom of the bearing combining part through hole are equipped with the columnar upper end chuck for preventing bearing to be detached from and lower end
Chuck；The bearing upper end-face edge and lower edge respectively have upper cutting portion and lower cutting portion, are hung in upper end chuck and lower end
Chuck；
The permanent magnet includes six magnetic poles, and tooth socket sheet metal includes six or three tooth socket metal vanelets, is fixed in axis
From the point of view of portion center, the angle between the center of coil and adjacent permanent magnet neutral region central point is 11.1
It is determined between -15.6 degree of degree, the angle between sensor and adjacent permanent magnet neutral region central point is in 14.4-18.9 degree
Between determine.
2. brushless DC vibrating motor according to claim 1, it is characterized in that the multiple tooth socket sheet metal mounting groove
It is mutually communicated, multiple blades of the tooth socket sheet metal are connected to be corresponded to each other with mounting groove, disposably by the tooth socket gold
Belong to piece and is accommodated in mounting groove.
3. brushless DC vibrating motor according to claim 1, it is characterized in that multiple tooth socket sheet metal mounting grooves and
The quantity of the blade of the multiple tooth socket sheet metal is identical as the number of poles of the permanent magnet or reaches the one of permanent magnet number of poles
Half quantity.
4. brushless DC vibrating motor according to claim 1, it is characterized in that the casing tooth socket sheet metal mounting groove
Sidewall upper forms the boss for preventing tooth socket sheet metal to be detached from.
5. brushless DC vibrating motor according to claim 1, it is characterized in that the thickness and peace of the tooth socket sheet metal
The depth for putting slot is identical, and the upper surface of tooth socket sheet metal and lower casing is consistent.
6. brushless DC vibrating motor according to claim 1, it is characterized in that the thickness of tooth socket sheet metal is in 0.03mm-
It is determined within the scope of 0.05mm.
7. brushless DC vibrating motor according to claim 1, it is characterized in that the border circular areas that tooth socket sheet metal is formed
Outer diameter it is equal with the outer diameter of the permanent magnet of rotor.
8. brushless DC vibrating motor according to claim 1, it is characterized in that bracket include lower end bracket edge to
Vertical bending extended bottom side of the wall position downwards down, a part of surface and a part of side of permanent magnet respectively with lower end branch
The surface of frame and lower end rack side wall are connected with each other.
9. brushless DC vibrating motor according to claim 1, it is characterized in that the thickness of ticker upper end and rank
The height of difference is identical, and plane and the upper end rack surface of ticker upper end are consistent.
10. brushless DC vibrating motor according to claim 1, it is characterized in that the upper end of ticker and being equivalent to branch
The upper end side face of one semi-area of frame horizontal plane is connected.
11. brushless DC vibrating motor according to claim 1, it is characterized in that flexible circuit board be equipped with sensor and to
Coil provides the driving IC of driving power, and stator includes two coils, and the hollow angle that sensor is located at two coils is divided into
On the point of the angle of half.
12. brushless DC vibrating motor according to claim 11, it is characterized in that the angle between two coils are hollow
The natural multiple of angle between two adjacent poles of permanent magnet.
13. brushless DC vibrating motor according to claim 12, it is characterized in that permanent magnet can also include four
Magnetic pole, tooth socket sheet metal includes four or two vanelets, from the point of view of axis fixed part center, the center of coil and adjacent
Angle between permanent magnet neutral region central point is determining between 11.7 degree ~ 14.0 degree, sensor and adjacent permanent magnetic
Angle between iron neutral region intermediate point determines in the range of 12.5 degree ~ 33.3 degree.
14. brushless DC vibrating motor according to claim 1, it is characterized in that in order to guarantee rising for above-mentioned permanent magnet
Initial point is identical as the starting point of the hollow dots of above-mentioned coil, permanent magnet, plurality of coils, tooth socket sheet metal axial alignment.
15. brushless DC vibrating motor according to claim 11, characterized in that tooth socket sheet metal plays rotor stopping
The magnetic pole of permanent magnet is arranged in always the effect above sensor when rotation.
16. brushless DC vibrating motor according to claim 1, it is characterized in that axis lower end is pressed into and arrives axis fixed part
The combined hole of position is fixed, and axis upper end does not install noise-proofing auxiliary material separately, and the inside above upper casing is made card slot, prevents from shaking
It is dynamic.
17. brushless DC vibrating motor according to claim 11, it is characterized in that arc-shaped scale is along lower end bracket
The 1/4-3/4 point of horizontal plane semicircle radius is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160091664A KR101707112B1 (en) | 2016-07-19 | 2016-07-19 | Brushless Direct Current Vibrational Motor |
| KR10-2016-0091664 | 2016-07-19 |
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| Publication Number | Publication Date |
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| CN106803699A CN106803699A (en) | 2017-06-06 |
| CN106803699B true CN106803699B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610861357.8A Active CN106803699B (en) | 2016-07-19 | 2016-09-29 | Brushless DC vibrating motor |
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| KR (1) | KR101707112B1 (en) |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101768988B1 (en) | 2016-07-19 | 2017-08-17 | 이상의 | Brushless Direct Current Vibrational Motor |
| KR101807550B1 (en) * | 2016-07-20 | 2017-12-11 | 이상의 | Brushless Direct Current Vibrational Motor |
| US10862368B2 (en) | 2016-07-19 | 2020-12-08 | Sang-eui LEE | Brushless direct current vibration motor having cogging plates for optimized vibrations |
| KR101934205B1 (en) * | 2017-07-29 | 2019-01-02 | 주식회사 모리스 | Method of manufacturing bracket of vibration motor |
| CN109038939B (en) * | 2018-07-13 | 2021-04-20 | 浙江省东阳市东磁诚基电子有限公司 | Permanent magnet alternating current flat vibration motor and use method |
| KR102136767B1 (en) * | 2020-03-31 | 2020-07-23 | 주식회사 와이제이엠게임즈 | Vertical vibration using upper and lower magnetic |
| CN114768629A (en) * | 2022-02-10 | 2022-07-22 | 苏州捷美电子有限公司 | Constant temperature oscillator |
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| JP2006068593A (en) * | 2004-08-31 | 2006-03-16 | Tokyo Parts Ind Co Ltd | Vibrating motor |
| KR20090056330A (en) * | 2007-11-30 | 2009-06-03 | 엘지이노텍 주식회사 | Blushless direct current vibration motor |
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| CN104979942A (en) * | 2014-04-04 | 2015-10-14 | 扬百格斯希姆株式会社 | Brushless direct current vibrational motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3125496U (en) * | 2005-07-13 | 2006-09-21 | 大星電機工業株式會社 | BLDC vibration motor |
| KR100859633B1 (en) * | 2005-08-19 | 2008-09-23 | 도쿄파츠고교 가부시키가이샤 | Stator and axial-gap brushless vibration motor comprising same stator |
| JP5368695B2 (en) * | 2007-11-20 | 2013-12-18 | 日本電産セイミツ株式会社 | Flat brushless motor |
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- 2016-07-19 KR KR1020160091664A patent/KR101707112B1/en active IP Right Grant
- 2016-09-29 CN CN201610861357.8A patent/CN106803699B/en active Active
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| JP2006068593A (en) * | 2004-08-31 | 2006-03-16 | Tokyo Parts Ind Co Ltd | Vibrating motor |
| KR20090056330A (en) * | 2007-11-30 | 2009-06-03 | 엘지이노텍 주식회사 | Blushless direct current vibration motor |
| CN101960697A (en) * | 2008-02-29 | 2011-01-26 | 日本电产科宝株式会社 | Brushless motor |
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| Publication number | Publication date |
|---|---|
| CN106803699A (en) | 2017-06-06 |
| KR101707112B1 (en) | 2017-02-27 |
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Effective date of registration: 20190716 Address after: 264200 Yuqiao Road-18-1, Qiaotou Town Industrial Park, Weihai Economic and Technological Development Zone, Shandong Province Patentee after: Weihai Shuo Micro Motor Co., Ltd. Address before: Jinlong Yuewan District, Jing District, Weihai City - No. 10 - 2001 Patentee before: Li Xiangyi |
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