CN101197513B

CN101197513B - Motor

Info

Publication number: CN101197513B
Application number: CN2007100059772A
Authority: CN
Inventors: 李镐在
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2006-12-06
Filing date: 2007-02-15
Publication date: 2011-09-14
Anticipated expiration: 2027-02-15
Also published as: KR20080051585A; CN101197509B; CN101197513A; KR100883592B1; CN101197509A

Abstract

The invention relates to a motor which is provided with a bracket formed outside the motor. A PCB is held inside the bracket and a circuit pattern and various elements are arranged on the PCB. A stator is arranged on the PCB and a rotor is arranged inside the stator. A shaft rotates with the rotor so as to transmit the rotation force of the rotor. A stopper outstands from the bracket so as to prevent the rotor from moving along the shaft.

Description

Motor

The application requires all the korean patent application No.10-2006-0122998, the 10-2006-0122999 that submit on December 6th, 2006 and the priority of 10-2006-0123001, and its full content is bonded to here by reference.

Technical field

The present invention relates to a kind of motor, relate more specifically to a kind of like this motor, it is easy to make, have the efficient and the durability of raising, and has the cramped construction of being convenient to the user.

Background technology

Usually, the correcting coil motor is used in refrigerator or the freezer unit as blower motor.Correcting coil and main coil twine the stator in the correcting coil motor.

Correcting coil is configured to start rotor.Correcting coil forms avette magnetic field with the starting rotor together with main coil.When rotor rotated, correcting coil no longer needed and wastes electric power.

And auxiliary tooth should be arranged on stator and sentence at this and twine correcting coil, and this makes the stator profile complexity, and correcting coil should additionally twine this tooth, this make twine complicated.

Because the correcting coil motor uses single phase alternating current (A.C.) electric power to reduce the number of Electrical and Electronic parts, the correcting coil motor has advantage cheaply.Yet the correcting coil motor consumes and wastes a large amount of electric power usually.

And, be difficult to control the correcting coil motor and have large-sized further shortcoming.

Therefore, need a kind of like this motor day by day, it can reduce power consumption and have be easy to make compact outside.This motor can not only be operated blower fan but also suitably control fan speed and torque.

Summary of the invention

Correspondingly, the present invention relates to a kind of motor.

One object of the present invention is to provide a kind of motor, and it can be easy to make and have compact outside by reducing the motor installing space, uses thereby this motor can have widely.

Another purpose of the present invention is to provide a kind of motor, and it has improved efficient, and has reduced power loss thus.

Further purpose of the present invention is to provide a kind of motor, its rotary speed of its may command or torque, and improve reliability and durability thus.

More specifically, thus cogging torque is lowered to improve the moyor motor and can be controlled more smoothly.

Other advantage of the present invention, purpose and characteristic ground provide in the following description, and are obvious for those of ordinary skills by reading following description partly, perhaps can realize from implementing the present invention.Can realize and obtain the objectives and other advantages of the present invention by the structure of specifically noting in written description and claim and the accompanying drawing.

In order to realize these purposes and other advantage of target according to the present invention as embodying and broadly describing here, a kind of motor comprises and forms magnetic circuit and have along the stator core of a plurality of tooth parts of peripheral direction; Be arranged in each tooth parts with tooth at this winding around; And alternately and extend to the extension component of inner radial direction along the peripheral direction of stator core and tooth parts.

Here, this extension component guarantees sufficient space so that the flux flow warp, thereby has improved moyor.And this extension component extends to the tooth parts with can being convex and can improve the intensity of stator core.

A plurality of unit stator core can form multilayer to form the stator core.In other words, stator core in unit can be that longitudinal direction forms multilayer along the direction of axle.This sandwich construction can reduce flux leaking, and this can produce in the direction perpendicular to flux directions, thereby has improved moyor.

And the ca(u)lk parts can form so that multilevel-cell stator core is fastened as one.These ca(u)lk parts prevent that moyor from reducing.Preferably, these ca(u)lk parts form on extension component in case the structural strength of the sub-core of fastening reduces.These ca(u)lk parts form on the extension component with enough predetermined thickness.Therefore, preferably these ca(u)lk parts form in the center of the extension component with maximum ga(u)ge.

This tooth can form one with the stator core.When the unit stator was punched and is shaped, this tooth also can be formed.Alternately, this tooth can form and be secured to then the tooth parts independently about the stator core.That is, the end of tooth is inserted in the teeth groove that forms on the tooth parts so that this tooth is fastened to the tooth parts.

And groove can further form on the outside of tooth parts.This groove forms to separate the stator core along the longitudinal direction of stator core, that is, unit stator core is separated smoothly from mold.

This groove can be corresponding to teeth groove and special center corresponding to teeth groove.In other words, if form on the part of teeth groove in the stator core, then preferred this groove forms thereon on the outside of stator core of teeth groove and forms.This groove can reduce the variation of the stator core dimensions that produces in the tooth in inserting teeth groove.

And this stator also can have reel.This tooth is inserted in the center of reel and coil twines reel.This reel is isolated electric current and fixed coil reliably between tooth and coil.

More specifically, this reel has inner and outer wall in case the principal vertical line circle leaves individually.Thereby outer wall can the Contact Tooth parts and the inwall of tooth parts are more fixing reels of plate shape.

This motor can be the BLDC motor.

More specifically, this motor has stator and centers on the stator rotor rotated.This stator comprises the stator core that has along a plurality of tooth parts of periphery formation, wherein forms magnetic flux; Thereby a plurality of teeth that twined by coil are set on the tooth parts; And be the extension component that convex ground extends towards the inner radial direction, replace with a plurality of tooth parts.This rotor has permanent magnet alternately to magnetize along the magnetic pole of rotor outer periphery surface.This extension component can form on each part between two adjacent teeth parts.

Here, pole shoe can form at the place, end of tooth and two opposed ends of pole shoe extend preset distance along peripheral direction, to be basically parallel to the outer periphery surface in the face of the rotor of pole shoe.

And the otch parts can form to reduce cogging torque at two opposed ends or the place, an end of pole shoe.Here, these otch parts form to have the narrower width of width than the other parts of pole shoe in a longitudinal direction at the place, end of pole shoe.

In another aspect of this invention, this motor also can have and forms its outside carriage and be located at PCB (printed circuit board (PCB)) in this carriage, and circuit pattern and various element are installed on this PCB.

This stator is arranged on the PCB and rotor is arranged on stator interior or outside to rotate around stator.Axle further is set, and this axle rotates with operation because the external load that the turning effort power of rotor produces with rotor.

According to embodiments of the invention, retainer is set also.This retainer can inwardly be given prominence to restrict rotor moving along axle in carriage.

That is, this axle is inserted in the rotor to be secured to rotor.If because vibrating rotator moves along axle, then PCB can be damaged.

Therefore, this retainer can be integral with inwardly outstanding with bracket-shaped, thereby prevents the motion of rotor.

And, can on PCB, form hollow space.And this retainer can be located in the hollow hole.When PCB is installed in the carriage, thereby this retainer is located at the position of PCB in the hollow space of PCB and is suitably fixed.

This carriage can comprise upper bracket and lower tray, and they are coupled to each other.Retainer can form on the carriage of upper and lower respectively.The retainer that forms on lower tray prevents that rotor from moving down towards lower tray, and the retainer that forms on upper bracket prevents that rotor from moving up towards upper bracket.Therefore, this rotor between two brakings by basic fixed.

This retainer can be outstanding with cylindrical shape.Preferably, determine in or overall diameter so that the upper surface of the upper surface of retainer contact rotor.

According to embodiments of the invention, certain part at least of PCB can be shaped as the shape corresponding to stator.This stator can form round-shaped, and correspondingly, certain part of PCB also is formed round-shaped.The part that the PCB at stator place is set can be round-shaped and other parts can be rectangular shapes.

And the shape of carriage can be corresponding to the shape of PCB.This can make motor compact appearance and improve the exterior appearance of motor.

In another aspect of this invention, a kind of motor has the stator that comprises the stator core that forms magnetic flux, is arranged on a plurality of teeth on the stator core and is arranged on the tooth so that the reel that coil twines; PCB be electrically connected to coil by the fin that forms at the reel place makes stator be fixed to this.Certain part of PCB can form corresponding to the shape of stator profile and forming the hole and be in the position of inserting fin therein and form extension component on the stator.

Part corresponding to the PCB of stator profile has the overall diameter identical with stator.This is to become big for the external dimensions that prevents motor owing to the size of PCB.

Therefore, certain part at least of PCB can form round-shaped.

Thereby the fin that forms on the reel of stator is inserted in and is electrically connected coil and PCB and fixed stator on PCB in the hole that forms on the PCB.

According to the sail position based on the reel position, the hole of wherein inserting fin can be arranged on the most external office of PCB.Thus, the intensity of the outermost portion of PCB may reduce.Therefore, preferred extension component stretches out from the part that forms the hole, that is, stretch out along peripheral direction convex ground.

Because whole PCB is very big, the part that forms the PCB at place, hole can make its intensity be reinforced.Yet in this case, the PCB that becomes too big can cause that the motor external dimensions becomes big problem.

This PCB can be fixedly mounted in the lower tray.Then, preferably on the inner surface of lower tray, form so that the extension component seat leans on corresponding to the groove of extension component shape.More preferably, each shape of upper and lower carriage is corresponding to the shape of PCB.

Should be appreciated that the detailed description of general description in front and back all is exemplary and indicative and should be understood as that the scope of restriction claim.

Description of drawings

Be included in here to provide further understanding of the present invention and to be bonded in this application and the accompanying drawing that constitutes its part illustrates embodiments of the invention and be used from specification one and explain principle of the present invention.In the drawings:

Fig. 1 is the decomposition diagram according to the motor of the embodiment of the invention;

Fig. 2 is the perspective view of some parts of assembled motor shown in Figure 1;

Fig. 3 is the perspective view of the lower surface of upper bracket shown in Figure 1;

Fig. 4 is the plan view that is secured to Fig. 1 lower tray of PCB;

Fig. 5 is the plan view of Fig. 1 stator;

Fig. 6 partly illustrates the plan view of fixed structure of traditional connector of being used to be electrically connected; And

Fig. 7 is the perspective view of partly illustrating to be used to be electrically connected to according to the connector fixing construction of the motor of the embodiment of the invention.

Embodiment

In detail with reference to the preferred embodiments of the present invention, the example is illustrated in the accompanying drawings now.Identical reference number will be used for as far as possible in the same or analogous part of institute's drawings attached expression.

Fig. 1 is the decomposition diagram according to the motor 100 of the embodiment of the invention.

As shown in Figure 1, motor has carriage 110, PCB (printed circuit board (PCB)) 150, stator 140, rotor 170 and axle 180.Carriage 110 forms the outside of motor.PCB150 is maintained in the carriage 110 and has the circuit pattern (not shown).And various element (not shown) are installed among the PCB150.

Carriage 110 comprises lower tray 120 and upper bracket 130.Bottom and

upper bracket

120 and 130 are coupled to each other to keep various members therein.In order to be coupled to each other bottom and

upper bracket

120 and 130, fastening protruding 121 and 131 can utilize the screw (not shown) by the fastener hole 122 that forms on fastening protruding 121 and 131 and 132 and fastened.

With reference to figure 1 and 5, describe the stator 140 of motor in detail.

Stator 140 has stator core 141 and tooth 142.

Shown in top figure, stator core 141 can form round-shaped and form magnetic circuit.Tooth 142 is along the outstanding and coil winding tooth 142 of radial direction of stator core 141.Motor shown in the figure is illustrated into inner rotator type motor, and its rotor is located in the stator core 141.Therefore, tooth 142 is inwardly outstanding along radial direction.Can form a plurality of teeth 142 and Fig. 5 four teeth 142 of formation are shown.

A plurality of tooth parts 144 replace with the inner rim direction of a plurality of extension components 145 along stator core 141.Here, tooth 142 is separately positioned on the tooth parts 144.Extension component 145 is along radial direction convex ground and extension upcountry.

Extension component 145 can upcountry extend with convex ground between two adjacent teeth parts 144 along radial direction.Preferably, extension component 145 fully increases its thickness to guarantee to form the required enough spaces of magnetic flux.Thus, the flux leaking that produces owing to the high saturation on the flux density is reduced with the efficient of raising motor and the thickness of stator core 141 increases to strengthen the structural strength of stator core 141.

Alternately, extension component 145 can outwards form along radial direction.But, may enlarge the size of stator core 141, and enlarge the whole dimension of motor thus.

Stator core 141 can be formed by the multilayer of a plurality of unit stator core.That is, a plurality of thin unit stator cores can form multilayer has predetermined altitude with formation stator core 141.The stator core 141 that is formed by multilevel-cell stator core can reduce flux leaking, and this can form in the vertical direction of magnetic flux, to improve the efficient of motor.Also preferred tooth 142 is formed by the form of multilayer.

If stator core 141 is formed by multilevel-cell stator core, then stator core 141 can be used as one and is secured to each other.This means that a stator core 141 that forms as one is essential.Therefore, ca(u)lk parts 146 can be set with mutual fastening stator core 141.These ca(u)lk parts 146 form on stator core 141, more specifically, have on the stator core part of big width.Ca(u)lk parts 146 are by flux leaking or the edge flux of upper and lower to reduce to produce owing to ca(u)lk parts 146 of stator core 141.

Ca(u)lk parts 146 can form on extension component 145.Preferably, ca(u)lk parts 146 form in the center of the extension component 145 with Breadth Maximum.

Thus, can carry out reliable ca(u)lk operation.Ca(u)lk parts 146 can reduce the distortion of stator core 141 and can prevent that efficient from reducing.

Simultaneously, tooth 142 can form one with stator core 141, that is, tooth 142 can form one from beginning and stator core 141.Alternately, tooth 142 can be independent of stator core 141 and forms and be fastened to stator core 141 so that the manufacturing of stator 140 and twining than being easier to.

Teeth groove 147 is that the center of the tooth parts 144 of formation on the stator core 141 forms and the end of tooth 142 is inserted in the teeth groove 147 so that tooth 142 is fastened to stator core 141.

Therefore, tooth 142 is inserted in the reel 143 and coil twines reel 143 so that tooth 142 is inserted teeth groove 147, thus fastening between reel 143 and tooth 142 and twine and can carry out smoothly.

Then, groove 148 can form on the outer periphery surface of stator core 141 along the longitudinal direction of stator core 141.Preferably, a plurality of grooves 148 can form along the peripheral direction of the outer surface of stator core 141.

When unit stator core is punched when molded, groove 148 is convenient to unit stator core and is separated from punch die.More specifically, groove 148 makes the internal pressure of mould identical with external pressure with successfully from mold separation unit stator core.And, groove 148 guidance unit stator cores.

Preferred groove 148 is to form on the outside of the tooth parts 147 that form on the stator core 141 variation with the core dimensions that reduces to cause when tooth 142 is inserted in the teeth groove 147.Therefore, in order to carry out this function, preferred groove 148 is corresponding to the center of teeth groove 147.

Thereby preferred coil twines the winding of reel 143 between coil and tooth 142 that is configured for insulating and is easy to carry out, rather than directly makes coil twine tooth 142.

Reel 143 can be configured to inwall 143a, twine parts 143b and outer wall 143c.Coil twines this and twines parts 143b between inwall 143a and outer wall 143c, and inwall 143a and outer wall 143c prevent that coil from leaving.

Here, the tooth parts 144 of the outer wall 143c of reel 143 contact setting on stator core 141.Preferably, the inwall of tooth parts 144 is planes of the outer wall 143 of contact reel 143, thereby reel 143 can be connected to stator core 141 more reliably.

And motor can have four teeth 142, and is for example, shown in Figure 5.Therefore, if to the coil electricity that twines tooth 142, the N utmost point and the S utmost point alternately form on each tooth 142.As shown in Figure 5, if the N utmost point forms on the tooth 142 that is arranged on the uppermost position, then the S utmost point forms on adjacent teeth.

Polarity forms on tooth 142 and flux leaking increases along with the increase of the distance between tooth.Therefore, thus pole shoe 149 can form on the front end of each tooth 142 to reduce flux leaking and to contact the outer surface of rotor 170 along two opposite peripheral direction definite length extended securely.Thus, the flux leaking that forms between two adjacent teeth can be reduced.

As shown in Figure 5, can be free of attachment to the next pole shoe 149 that on another adjacent teeth 142, forms at the pole shoe 149 that forms on the tooth 142.This is because form two different polarity respectively on two adjacent pole shoes 149.Therefore, if two adjacent pole shoes 149 are connected, then polarity can reduce.

With forming pole shoe 149, preferably reduce by the polarity acute variation between tooth from the cogging torque or the torque pulsation of axle 180 and rotor 170 generations to reduce flux leaking.This is because cogging torque makes and is difficult to control motor and causes vibration or noise.

Preferably make the acute variation of the polarity between two adjacent teeth become level and smooth.

Correspondingly, notch portion 149a can form to reduce cogging torque at two opposed ends or the place, an end of pole shoe 149.Flux density is reduced in case the stop polarity acute variation by notch portion 149a.Because notch portion 149a magnetic leakage may become big.Therefore, notch portion 149a can only form at the place, an end of pole shoe 149.

Preferably, notch portion 149a forms to have the width narrower than the other parts of pole shoe 149 at the place, end of pole shoe 149 in a longitudinal direction.

Then, with reference to figure 1 and 4, describe PCB150 in detail according to the motor of the embodiment of the invention.Here, Fig. 4 is mounted in the plan view of the PCB150 on the lower tray 120.

Shown in Fig. 1 and 5, stator 140 can form round-shaped.Corresponding to the shape of stator 140, certain part at least of PCB150 can form round-shaped.As shown in figs. 1 and 4, the top of PCB150 can form round-shaped, and stator 140 is seating herein.

The radius of the circular portion of PCB150 can be with stator core 141 basic identical.Large-sized outside of PCB150 can enlarge the size of carriage 110.Therefore, the whole dimension of motor may become big.Correspondingly, certain part of PCB150 can form round-shaped so that the motor with compact size to be provided.

And, because the shape of carriage 110 corresponding to the shape of PCB150, has improved the exterior appearance of motor.

And fin 143d can form on two opposite sides of the bottom of reel 143.Fin 143d is electrically connected to the coil that twines reel 143.Therefore, fin 143d is inserted in the last hole 151 that forms of PCB150 so that PCB150 is connected to coil.In case fin 143d is inserted into the hole 151 of PCB150, weld to guarantee electrical connection.

Fin 143d helps to make stator 140 seatings on the top of PCB150 by use reel 143, and PCB150 is electrically connected to coil.Therefore, fin 143d can form on protruding 143e to enlarge and the contact portion of PCB150 and the weight of bearing stator 140.

Projection 143e can form in the bottom of outer wall 143c to remain on the distance between PCB150 and the stator core 141.

And connector 160 is arranged on the side of PCB150.Fin 161 forms on the end of connector 160 and connector 160 is fixed to PCB150 by fin 161, to be electrically connected to PCB150.Fin 161 is inserted in the other end of last hole 152 that forms of PCB150 and connector 160 in the motor outer exposed, promptly in the outside of carriage 110, thereby is connected to external power source.

And Hall sensor assembly 190 can be arranged on the part corresponding to rotor 170 positions of PCB150.The position of rotation of Hall sensor assembly 190 sensing rotors 170 or rotary speed are with the rotary speed or the torque of control rotor 170.Therefore, hole 153 forms on PCB150 with fixing Hall sensor assembly 190 and with Hall sensor assembly 190 and is electrically connected to PCB150.

Because four teeth 142 are set in the motor of this example, four parts are provided, four reels 143 are connected in this.

As shown in figs. 1 and 4, certain part of PCB150 forms round-shaped.Four parts of predetermined number form on the round-shaped part of PCB150.As mentioned above, this round-shaped part round-shaped corresponding to stator 140.

In order to provide the motor with compact size by the size that reduces PCB150, the hole 151 of predetermined number can form on the outermost portion of circular PCB part.That is, the hole 151 of predetermined number can form on the periphery of PCB150.May weaken because form the intensity of the part in hole 151 thereon, when forming hole 151, may break down, perhaps may damage hole 151 owing to vibration waits.

For this reason, preferred extension component forms therein on the part in each hole 151 and stretches out.In other words, extension component 154 guarantees the preset distance between the outermost portion of hole 151 and PCB150, becomes big thereby the intensity of PCB150 is reinforced and prevents the external shape of PCB150.And, extension component 154 make PCB150 successfully seating on carriage 110.

Can on PCB150, form hollow space 155.This hollow space 155 can be formed on PCB150 in the heart, and the retainer that will be described later is inserted in the hollow space 155 to prevent the interference between rotor 170 and PCB150.

And because retainer is inserted in the hollow space 155, PCB150 can be fixed to carriage 110 more reliably.

Then, with reference to figure 2 and 3, describe the carriage 110 of motor in detail.

As mentioned above, carriage 110 comprises lower tray 120 and the upper bracket 130 that is coupled to each other to keep various members.Lower tray 120 can have the installing component 123 that motor 100 is installed to the various parts of using motor.

The shape of carriage 110 is corresponding to PCB150.The PCB150 seating on carriage 110, and more specifically, in lower tray 120.

On lower tray, form so that extension component 154 seating therein corresponding to the groove 124 of extension component 154.When the PCB150 seating is on lower tray 120, this can so that the position of PCB150 automatically aim at more reliably.

The rank shape parts 128 that will be described later can form on lower tray 120 stator is installed to lower tray 120.These rank shape parts 128 are from the outstanding preset distance of the inwall of lower tray 120.Preferably, certain part of groove 124 cutting rank shape parts 128 with the shape that prevents carriage owing to groove 124 becomes big.

As shown in Figure 2, PCB150 is installed on the lower tray 120.As mentioned above, retainer 125 is inserted in the last hollow space 155 that forms of PCB150.

Therefore, stator 140 is endowed on PCB150, and rotor 170 is located in the stator 140 with axle 180.

Bearing 126 in the lower tray 120 rotatably supports and thrust is also sustained by being arranged in axle 180 end.The other end of axle 180 is rotatably supported by the bearing 136 that is provided with in upper bracket 120.Here, axle is exposed to drive load by through hole 137.

Axle 180 can insert in the rotor 170 with the rotation of rotor 170 one, thereby prevent that rotor 170 from moving along the longitudinal direction of axle 180.This is shown in Figure 2.

Yet rotor 170 can move by the longitudinal direction along axle owing to vibration.This can cause the interference between rotor 170 and PCB150 and damage PCB150.

Because these problems, retainer 125 can form and prevent that rotor 170 from moving along axle 180.Retainer 125 can be given prominence to and can be integral with bracket-shaped from the inside of carriage.

Form the retainer 125 of one shown in Fig. 1 and 2 with lower tray.

Preferably, retainer 135 also can form in upper bracket 130 integratedly with upper bracket 130.Rotor 170 can be arranged between two retainers 125 and 135.

Therefore, retainer 125 and 135 interference that can prevent between carriage 110 and PCB150 are even rotor 170 may move along axle 180.

Retainer 125 and 135 can protrude cylindrical shape.This is because preferably the retainer corresponding to rotor 170 has cylindrical shape.And, the going up or lower surface of retainer 125 or 135 upper surface contact rotor 170.Can determine the overall diameter or the interior diameter of retainer 125 and 135 for this reason.

Stator 140 can be fixed in the carriage 110 reliably.For this reason, rank shape parts 128 and 138 form on bottom and

upper bracket

120 and 130 respectively.

Stator 140, more specifically, the outer periphery surface of stator core 141, seating is on rank shape parts 128 and 138.Therefore, when upper bracket 130 was coupled to lower tray 120, stator 140 can be fixed between rank shape parts 128 and 138 reliably.

Because PCB150 seating is difficult to form the rank shape parts 128 corresponding to the whole periphery of stator core 141 on lower tray 120.Therefore, can form rank shape parts 138 corresponding to the whole periphery of stator core 141.For this reason, preferably in upper bracket 130, also form inner partition 139.

Alternately, inner partition also can form in lower tray.If like this, thus the through hole (not shown) can on PCB150, form inner partition can by the there.Thus, this may not be preferred.

Then, with reference to figure 6 and 7, the connector that is used for electric power connection motor is described.

Fig. 6 is that the front view of fixed structure of traditional connector and Fig. 7 are the fragmentary, perspective views according to the fixed structure of the connector of the embodiment of the invention.

The function class of tradition connector 60 is similar to the function according to the connector 160 of the embodiment of the invention.More specifically, connector 60 is the PCB50 power supply.Thereby the end of connector 60 is connected to the outside that the other end of PCB50 and PCB50 is exposed to carriage and is connected to external power source.

Here, the other end of connector 60 is connected to external power source via the plug (not shown) and when plug was connected or separate, connector 60 was subjected to big active force.

This active force can be the active force that connector 60 is pushed the active force in the carriage or connector 60 is pulled away from carriage.

Connector 60 is electrically connected to PCB50 via welding 63 but this coupling part may be destroyed by the said external active force.Therefore, the applied external force of the coupling part of influence between PCB50 and connector 60 should be reduced.

For this reason, wing parts 61 extend from two opposite sides at the center of traditional connector respectively.The opening (not shown) forms on wing parts 61.And, on carriage 11, form the protruding (not shown) that has corresponding to the fastener hole of this opening.

Therefore, in case connector 60 is connected to PCB50, then the wing parts 61 of connector 60 are secured to the projection of carriage 11 by screw 62.Because wing parts 61 absorb applied external force, can prevent that the coupling part between connector 60 and PCB50 is damaged.

Yet according to traditional structure, it is big and complicated that the size of connector can become.As shown in Figure 6, the PCB50 part that forms wing parts 61 herein should be cut.And additional screws is fastening if desired, and then this can cause productivity ratio to reduce, if motor should be made in a large number.Also have problem like this, promptly the number of required parts also increases.

Therefore, according to the motor of the embodiment of the invention, this motor also has with upper bracket or lower tray and forms the constant intensity of the strengthening part of one with reinforcement connector when upper bracket is coupled to lower tray.

That is, need not accessory for example screw can automatically strengthen this constant intensity with the constant intensity of strengthening connector and the connection of upper and lower carriage, allow manufacture process to be more prone to carry out thus.

Fig. 7 has illustrated to form with upper bracket the strengthening part of one.

Strengthening part 165 can be the sidewall of upper bracket 130 and can comprise the outstanding rib of giving prominence to towards connector 160 166.Alternately, outstanding rib 166 can be independent of the sidewall of upper bracket 130.

Rank shape parts 162 form on connector 160 so that outstanding rib 166 contacts with it.Because outstanding rib 166 contact rank shape parts 162, the applied external force that produces from connector 160 can be absorbed.

Contact process and the connection process between the carriage of upper and lower between outstanding rib 166 and rank shape parts 162 side by side carry out.Thus, can omit the fastening conventional procedure of screw.

Rank shape parts 162 only absorb connector 160 are pushed active force in the carriage.Therefore, thus rank shape parts 162 can form and have groove part 163 and also absorb the active force that connector 160 is pulled away from carriage 110.Outstanding rib 166 is inserted in the groove part 163 to absorb active force in two directions.

Strengthening part 165 also can have strengthens rib 167 to strengthen the intensity of outstanding rib 166.Strengthening rib 167 can be respectively form on carriage inside and outside.

Alternately, strengthening rib 167 can be perpendicular to outstanding rib 166.Here, preferably strengthen the upper surface of certain part contact-connection assembly for electric 160 of rib 167.This is because by the contact portion of increase with upper bracket 130 and connector 160, connector 160 can be fixed more reliably.

And groove 164 can form on the outer periphery surface of connector 160 with fixed connector 160 reliably along horizontal direction.

Certain part of lower tray 120 can be inserted in the groove 164 to strengthen the constant intensity of connector.

Therefore, can obtain following advantageous effects.

The outside that at first can easily make this motor and motor is compact.Therefore, advantageous effects is that the occupied space of motor can be lowered, and motor has application widely.

The second, this motor has the flux leaking of reduction.Therefore, another advantageous effects is that moyor is enhanced, and power loss is minimum.

The 3rd, this motor also has advantageous effects like this, and promptly by reducing cogging torque and the rotary speed and the torque of Control Shaft more smoothly, it can reduce vibration.

At last, can prevent that this motor from breaking down, in manufacture process or in use this fault may take place.Therefore, further advantageous effects is, the motor with high reliability and high durability is provided.

Those skilled in the art can be clear, under the prerequisite that does not deviate from spirit and scope of the invention, can make various modifications and change to the present invention.Therefore, the present invention is intended to contain scope and modification in the equivalent form of value and the change that belongs to claims.

Claims

1. motor comprises:

Form the carriage of motor outside;

Remain on the PCB (printed circuit board (PCB)) in the carriage;

Be arranged on the stator on the PCB;

Rotor is located in the stator and is had permanent magnet;

Rotate axle with rotor with the revolving force that transmits rotor;

Be integral in case the retainer that spline moves along axle with bracket-shaped; With

One end is electrically connected to the connector of PCB,

Wherein said carriage comprises: lower tray, upper bracket and strengthening part, the PCB seating is in described lower tray, described upper bracket is connected to described lower tray, and described strengthening part is strengthened the constant intensity of connector to PCB when described upper bracket is connected to described lower tray.

2. according to the motor of claim 1, wherein this strengthening part and upper bracket or lower tray form one.

3. according to the motor of claim 2, wherein formation rank shape parts and this strengthening part comprise the outstanding rib that contacts these rank shape parts on connector.

4. motor according to claim 3, wherein said rank shape parts form and comprise re-entrant part, and described outstanding rib inserts described groove, to absorb active force in two directions.

5. motor according to claim 3, wherein said strengthening part further comprise strengthens rib to strengthen the intensity of described outstanding rib.