CN1198372C

CN1198372C - Motor

Info

Publication number: CN1198372C
Application number: CN 01141163
Authority: CN
Inventors: 赤羽诚; 武井宏光
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Sankyo Corp
Priority date: 2000-10-04
Filing date: 2001-09-28
Publication date: 2005-04-20
Anticipated expiration: 2021-09-28
Also published as: JP3877273B2; CN1347185A; JP2002119002A

Abstract

Respective terminal parts 16a of a plurality of metal wiring boards 16 are arranged in the vicinity of respective terminal parts 15a of a plurality of drive coils 15, arranged in the circumferential direction by arranging the respective terminal parts 16a of a plurality of the metal wiring boards 16 in the same circumferential direction at substantially equal intervals, and the respective terminal parts 15a of the drive coils 15 are connectable easily with the respective terminal parts 16a of the metal wiring boards 16. The continuity parts 16c of the respective metal wiring boards 16 are extended, so as to surround the periphery of the terminal parts 16a, and the plane rigidity of a motor base plate 11, embedded with the metal wiring boards 16 can be improved and perform attaching work of the whole motor efficiently and highly accurately.

Description

Motor

Technical field

The present invention relates to a kind of motor, described motor has the structure that drive coil is connected in the metal wiring plate portion of terminal that the motor substrate interior buried underground.

Background technology

Usually, on the motor that heterogeneous drive coil is installed in the stator core, each end portion of drawing from above-mentioned heterogeneous drive coil is welded on the flexible electric circuit board by soldering etc.And just opening in flat 10-127031 communique etc. the spy, the someone has proposed to carry out the motor that drive wire circle end portion is carried out attended operation in than large space.

In the motor that motion is relevant therewith, as shown in figure 11, by inserting ingot mould moulding etc., a plurality of conductive metal distributing boards 2 after the pressure processing, 2 ... be embedded in the inboard of synthetic resin motor substrate 1, these metal wiring plates 2,2 ... each portion of terminal ((commutator) riser) 2a with direction of principal axis be installed on the integrally formed maintaining part unshakable in one's determination 3 of above-mentioned motor substrate 1 in.The motor relevant according to this type of motion can be connected above-mentioned metal wiring plate 2,2 with not shown drive coil end portion in bigger space ... each portion of terminal 2a, also can use simultaneously expensive flexible electric circuit board, can reduce the motor cost.

But, even in above-mentioned existing motion device, also there is following problems, that is: the end portion ring-type of drive coil must be wrapped in metal wiring plate 2,2 ... each portion of terminal 2a side, attended operation is loaded down with trivial details, also is difficult to simultaneously to obtain the required rigidity of synthetic resin system motor substrate 1, so can't be that standard is installed motor, and not only complexity but also maximize of the mounting structure of motor with this motor substrate 1.

Therefore, the objective of the invention is, provide a kind of and realize that by simple structure effective, high accuracy drive coil connects the motor of operation and motor mounting operation.

Summary of the invention

For achieving the above object, motor of the present invention comprises rotor and stator, it is characterized in that: be fixed on and twine heterogeneous drive coil in the stator core on the motor substrate, each end portion of these heterogeneous drive coils of while, they are connected to each coil connecting portion of the metal wiring plate of conduction, and this metal wiring plate is embedded in above-mentioned motor substrate inboard; With the proper spacing configuration, the metal wiring plate of above-mentioned a plurality of conductions is respectively equipped with the conducting portion that export-oriented side is extended from above-mentioned each coil connecting portion along radial direction to each coil connecting portion of the metal wiring plate of above-mentioned a plurality of conductions simultaneously along circumferentially; The periphery of the relative said stator iron core of these conducting portions is extended, and towards an external connecting portion convergence arrangement.

In the motor that the present invention program 2 is correlated with, each connecting portion of the metal wiring plate of such scheme 1 described a plurality of conductions is made of near a plurality of portion of terminal each end portion that extends to above-mentioned heterogeneous drive coil, and above-mentioned a plurality of each portion of terminal edge are circumferentially with roughly equi-spaced apart configuration.

In the relevant motor of the present invention program 3, each connecting portion of the metal wiring plate of a plurality of conductions of such scheme 1 is made of a plurality of shoulder portion that is formed at respectively on above-mentioned each conducting portion, and above-mentioned a plurality of each shoulder portion are along circumferentially disposing with appropriate intervals.

In the motor that this programme 4 is correlated with, the metal wiring plate conducting portion of such scheme 1 described conduction is a plate-like members, the conducting portion one distolateral bending that above-mentioned each portion of terminal of while is being formed by above-mentioned flat part member.

In the motor that scheme 5 is correlated with, the motor substrate of such scheme 1 is provided with the motor mounting datum level.

In the motor that scheme 6,7 is correlated with, the motor substrate of such scheme 1 is established as other motor substrate relay substrate of double as, the motor substrate that forms as this relay substrate is provided with other motor splicing ear, and the metal wiring plate conducting portion that above-mentioned motor substrate is connected in the above-mentioned conduction on above-mentioned other motor splicing ears extends, and above-mentioned conducting portion is towards above-mentioned external connecting portion convergence arrangement.

In the motor that scheme 8 is correlated with, it is textural that the external connecting portion of the metal wiring plate of such scheme 1 is formed at outside connecting connector.

In the associated motor of scheme 9, the conducting portion of the conducting metal distributing board of such scheme 1 is formed by plate-like members, the conducting portion of the metal wiring plate of above-mentioned conduction is a plate-like members, described a plurality of conducting portion dispersed placement are in the plane of described motor substrate, to strengthen described substrate simultaneously.

Have in the scheme 1 or scheme 4 described motor of said structure, the conducting portion opposite face of the metal wiring plate of each conduction extends to the roughly whole face of stator core, so help to improve the motor substrate plane rigidity of the metal wiring plate of burying conduction underground, improved motor integral installation precision.

At this moment, the motor relevant according to scheme 2, with equi-spaced apart roughly near each end portion of a plurality of drive coils of circumferentially configuration, dispose a plurality of each portion of terminal of metal wiring plate, each end portion of drive coil can be easily and is connected each portion of terminal of these metal wiring plates effectively.

The motor relevant according to scheme 3, each end portion of drive coil can be easily and effectively are connected along circumferentially with each shoulder portions of a plurality of metal wiring plates of appropriate intervals configuration.

The motor relevant as scheme 5, if the motor substrate is provided with the motor mounting datum level, then can be easily and high accuracy installation motor.

The motor relevant according to scheme 6,7, other motor substrates of the motor substrate double as of establishing as relay substrate use, can use other motor substrates thus, can realize the cost degradation and the miniaturization of single unit system, simultaneously, the above-mentioned metal wiring plate conducting portion that above-mentioned motor substrate is connected the splicing ear that is used for above-mentioned other motor extends, and further improves the planar rigidity of motor substrate with this.

According to the motor that scheme 8 is correlated with, connecting portion is installed in the extension end of metal wiring plate conducting portion, and becomes one with it, so can use the connector that is formed by other members, can further reduce cost.

The motor relevant according to scheme 9, the conducting portion of above-mentioned metal wiring plate is formed by plate-like members, a plurality of conducting portion opposite faces extend to the roughly whole face of above-mentioned stator core simultaneously, this structure has the almost effect of whole face of the above-mentioned motor substrate of reinforcement, so can further improve the planar rigidity of motor substrate.

Description of drawings

Fig. 1 is for showing the cutaway view that is suitable for CD-ROM drive unit electricity consumption motor construction example of the present invention.

Fig. 2 is a motor substrate part shown in Figure 1 plane key diagram.

Fig. 3 is for amplifying the cutaway view of motor substrate part shown in Figure 1.

Fig. 4 is for amplifying the cutaway view of other examples of connecting portion.

Fig. 5 is the plane key diagram of shape after the metal wiring plate moulded section on the motor substrate shown in Figure 3.

Fig. 6 is for being suitable for other carrier actuator drive electricity consumption motor construction example cutaway views of the present invention.

Fig. 7 is for showing the plane key diagram of motor substrate metal distributing board pressing mold shaping shown in Figure 6 back form.

Fig. 8 is connected the cutaway view of state on the motor substrate for showing other motor leads.

Fig. 9 is connected the end view of state on the motor substrate for showing other motor leads.

Figure 10 is for showing the end view of motor mounting part variation.

Figure 11 is for showing the outward appearance oblique view of present motor substrate.

Among the figure, 10 is stator pack, and 20 is rotor set, D is a device body, and L is a lead, and 11 is the motor substrate, 11a is a motor mounting portion, and 12 is the bearing support, and 12a is a support sector unshakable in one's determination, 13 is metal bearing, and 14 are stator core, and 15 is drive coil, 15a is an end portion, and 16 is metal wiring, and 16a is a portion of terminal, 16b is the terminal bottom, and 16c is a conducting portion, and 16d is a connecting portion, 16e is a splicing ear, and 16f is a through hole, and 16g is a conducting portion, 16h is a shell, and 16I is a connecting portion, and 16m is a shoulder portion, 21 are rotating shaft, and 22 is past returning, and 22b is a rotor casing, 23 for driving magneto (permanent magnet), and 24 is clamping plate portion.

The working of an invention mode

At the spindle drive motor that can be used for various media drive rotating driving devices such as CD-ROM, illustrate to be suitable for example of the present invention below.

The rotary-type media drive drive unit of Figure 1 and Figure 2 axle with spindle drive motor integral body by constituting as the stator pack 10 of fixed component, the rotor set 20 that axially is installed on this stator pack 10 as rotating member.

Wherein, stator pack 10 is provided with the motor substrate 11 that is made of synthetic resin system plate-like members, is installed on datum level 11b on the 11a of motor mounting portion of motor substrate 11 by locating with the butt of body apparatus D side, fixes whole motor simultaneously.

In the substantial middle part of above-mentioned motor substrate 11, be integrally formed with retainer 12 roughly cylindraceous, at described retainer private side, metal bearing 13 is installed as the sliding bearing member.Metal bearing 13 adopts the sintered metal bearing parts, is located in the dead eye of these metal bearing 13 cores, and rotating shaft 21 can be inserted with rotating freely, and obtains radial support.

Above-mentioned rotating shaft 21 is protruded upward from the peristome of the diagram upper end side of above-mentioned metal bearing 13, but diagram end portion in this rotating shaft 21, being provided with becomes the pivot of spherical calotte 21a, be disposed at a contact on the 11c of thrust pad portion that is installed on above-mentioned motor substrate 11 sides by the 21a of this pivot portion, above-mentioned rotating shaft 21 integral body are subjected to radial support.

Again, the territory, radial direction foreign side lateral areas of above-mentioned synthetic resin system retainer 12 is formed at the 12a of support sector unshakable in one's determination, outer circumferential side at the 12a of this iron core support sector, be installed with the stator core 14 that the laminated body by electromagnetic steel plate constitutes, simultaneously in this stator core 14, relatively at it circumferentially with each salient pole portion of equidistant configuration roughly, be wound with drive coil 15 respectively.

At this moment, above-mentioned drive coil 15 is provided with the heterogeneous utmost point, as 3 phases, the end portion 15a that pulls out from these heterogeneous drive coils 15 wound form respectively is connected on each portion of terminal (coil connecting portion) 16a of metal wiring plate 16, and described each portion of terminal is done axially to protrude from the above-mentioned 12a of support sector unshakable in one's determination.Each portion of terminal 16a of metal wiring plate 16 has 4, be arranged to surround around the above-mentioned rotating shaft 21, above-mentioned each portion of terminal 16a as shown in Figure 2, along circumferentially disposing with the approximate equality spacing.

One end of each metal wiring plate 16 that above-mentioned 4 portion of terminal 16a will be made of the tabular electroconductive member respectively bends to nearly rectangular shaped, and the terminal bottom 16b that is connected each portion of terminal 16a Fig. 1 lower end side is embedded in the inside of the above-mentioned 12a of support sector unshakable in one's determination.Above-mentioned 4 terminals bottom 16b axially extends towards Fig. 1 below by the inside of the above-mentioned 12a of support sector unshakable in one's determination, this each terminal bottom 16b diagram end portion becomes nearly right angle towards the radius outside curve, is communicated with and is integral with conducting portion 16c in being embedded in above-mentioned motor substrate 11.On the surface of the above-mentioned motor substrate 11 that comprises above-mentioned conducting portion 16c upper surface, be coated with the insulating component that constitutes by dielectric film and external coating etc.

Like this, 4 conducting portion 16c that are linked to 4 terminal bottom 16b respectively become radial and extend to radius foreign side side, afterwards, surround above-mentioned each portion of terminal 16a around, an almost whole extension of said stator iron core 14 relatively, at last, convergence arrangement is installed in the 16d of connector portion of the connecting portion at a position in conduct.

On the other hand, the motor substrate 11 in this example can be used as the relay substrate use that other motor substrates are used, and on the motor substrate of establishing as relay substrate 11, is provided with the splicing ear 16e that connects other motor, 16e.And the couple of conductor L that draws from above-mentioned other motor passes in the through hole 16f that is formed on the motor substrate 11 from inboard (side below Fig. 1), contacts with above-mentioned

splicing ear

16e, 16e, connects by scolding tin respectively.

Again, from extending of above-mentioned a pair of

splicing ear

16e, 16e conducting portion 16g, the 16g the same with the conducting portion 16c of above-mentioned metal wiring plate 16, these conducting

portions

16g, 16g convergence arrangement are in the connecting portion 16d at an above-mentioned place respectively.

Each 16d of connector portion that is located at metal wiring plate 16 conducting portion 16c fore-ends is Fig. 3 or female mould structure shown in Figure 4, becomes to surround the interior chimeric 16i of connector portion that offside formpiston structure is arranged of shell 16h of the 16d of this connector portion outside shape setting.

During metal wiring plate 16 that manufacturing is integrated in one each one such as above-mentioned portion of terminal 16a, terminal bottom 16b, conducting

portion

16c, 16g, the 16h of connector portion and splicing ear 16e, at first carry out the moulded section of flat shape as shown in Figure 5.Afterwards, portion of terminal 16a installs behind the nearly right angle orientation bending forming with terminal bottom 16b.The original unwanted enhancing 16j of portion cuts by die-cut.Metal wiring plate 16 is installed on assigned position in the mould, with the motor substrate 11 that comprises above-mentioned bearing support 12, does one-body molded by interpolation type or outside plug type mould.After the moulding, cut last remaining other ribs 16k by cut off or die-cut etc.

Return Fig. 1 again, projection above above-mentioned rotating shaft 21, be fixed with suborbiculate toward returning 22 center ring-type installation portion 22a, simultaneously be installed in this toward 22 bottom surface sides of returning outer transition ware shape rotor casing 22b the most peripheral part, be provided with cylindric wall 22c circlewise, at the inner peripheral surface of this cylindric wall 22c, driving magneto (permanent magnet) 23 equally circlewise is installed.Along the driving excitation face that inside and outside two side faces of this annular drive magneto 23 form, install near each salient pole portion of said stator iron core 14 from radial direction foreign side side.

, be provided with toward returning 22 diagram upper face side above-mentioned as the clamping plate portion 24 that drives mounting portion again.This clamping plate portion 24 inserts the above-mentioned outside toward 22 the center ring-type installation portion 22a of returning, and fixing, and by passing not shown record carrier driver installing hole, this record carrier driver integral body is being installed under the radial location state in this clamping plate portion 24.

Motor according to this example with said structure, along near circumferentially with each end portion 15a of a plurality of drive coils 15 of equi-spaced apart configuration, dispose each portion of terminal 16a of a plurality of metal wiring plates 16, its result, each end portion 15a of drive coil 15 can be easily and are connected in each portion of terminal 16a of above-mentioned metal wiring plate 16 effectively.

Because the conducting portion 16c of above-mentioned each metal wiring plate 16 is the ambient state ground that surrounds above-mentioned portion of terminal 16a, opposite face extends to the almost whole face of stator core 14, therefore, can be embedded with the planar rigidity of the motor substrate 11 of metal wiring plate 16 with raising by disposing above-mentioned a plurality of conducting portion 16c, improve the installation accuracy of motor integral body.

At this moment, particularly in this example, because motor substrate 11 is provided with motor mounting datum level 11a, so can be easily and carry out the motor mounting operation accurately.

Moreover, in the motor of this example, the motor substrate of establishing as relay substrate 11 can be also used as the substrate of other motor, so can refill other motor substrates, whole as device, can reduce cost and realize miniaturization, can further improve the planar rigidity of motor substrate 11 simultaneously.

In the motor of this example, the integrated elongated end part that is installed in the conducting portion 16c of metal wiring plate 16 of the 16d of connector portion, so can use the connector that is made of other members, its result can further reduce cost.

On the other hand, mark the example of Figure 6 and Figure 7 of the structural elements of corresponding above-mentioned example with prosign, the almost whole face of each conducting portion 16c relative stator iron core 14 of metal wiring plate 16 extends, and convergence arrangement is in the 16d of connector portion as a connecting portion, in this, identical with above-mentioned example, but, be respectively equipped with the 16m of shoulder portion that constitutes the sub-connecting portion of coil at the mid portion of each conducting portion 16c.With the appropriate intervals configuration, each terminal part of above-mentioned drive coil 15 is welded on respectively on the 16m of this shoulder portion the 16m of these shoulder portions along circumferentially.When the above-mentioned shoulder 16m of portion is carried out weld job, be located at the above-mentioned motor substrate 11 lip-deep insulating components that constitute by dielectric film and outer coating etc. and partly removed in above-mentioned relatively each 16m of shoulder portion part.

Even have in the motor of example of this kind structure, because the whole face of each conducting portion relative stator iron core 14 of metal wiring plate 16 extends, so can improve the planar rigidity of the motor substrate 11 that is embedded with metal wiring plate 16 and the installation accuracy of whole motor, simultaneously, each end portion 15a of drive coil 15 can be easily and is connected effectively along on the circumferential face of respectively the takeing on 16m with a plurality of metal wiring plates 16 of equi-spaced apart configuration, can obtain and above-mentioned example effect and effect much at one.

Example shown in Figure 7 is the plane key diagram of the shapes after the moulded section of metal wiring plate such as each conducting portion 16c of demonstration metal wiring plate 16, and this figure shows each conducting portion 16c connection status.And in implementing user mode, identical with the example of each conducting portion 16c of metal wiring plate 16 shown in Figure 2, be cut off respectively at necessary position.

Below understand specifically and made the working of an invention form, but the present invention is not limited in above-mentioned example, in the scope that does not break away from the invention aim various distortion can be arranged by the inventor.

For example, in above-mentioned each example, the resin portion of motor substrate 11 is arranged with the 11a of motor mounting portion, and metal wiring plate 16 sides also are provided with motor mounting portion, after moulding, also can cut away this motor mounting portion from the conducting portion of metal wiring plate 16.

As Fig. 8 and shown in Figure 9, in the time of on the surface that other motor leads L is welded on motor substrate 11, also can connect upper and lower any side at motor substrate 11 again.

Have again, also can be as shown in figure 10, in the marginal portion of metal wiring plate 16, form claw 16n crooked, that erect, and this claw 16n is inserted motor mounting plate 11c side,, be fixed by pressure or soldering etc.

In above-mentioned example, the present invention is applicable to CD-ROM drive drive unit spindle drive motor, but the present invention is not limited to this, equally also is applicable to various carrier drivers such as hard disk, floppy drive, DVD are carried out drive electric motor and other various motor.

Be suitable for the metal bearing that sliding bearing member of the present invention is not limited in above-mentioned each example, equally also be applicable to and use the device that utilizes lubricating fluid dynamic pressure bearing member.

As mentioned above, the motor relative stator iron core of the present invention program 1 or scheme 4 almost integral face from The conducting portion of metal wiring plate extends, and improves the plane of the motor substrate of burying this metal wiring plate underground with this Rigidity effectively and is accurately carried out motor integral installation operation, so can simple structure drive Moving winding connects the installation exercise of operation and motor, can low-costly obtain good motor characteristic.

The present invention program 2 motor, by along circumferentially with a plurality of drive coils of equi-spaced apart configuration each Near each portion of terminal of a plurality of metal wiring plates of configuration of end portion can be easily and effectively with drive wire Each end portion of circle is connected each portion of terminal of metal wiring plate, does so can improve the connection of drive coil The industry property.

The present invention program 3 motor can be connected in each end portion of drive coil easily and effectively Along in circumferential each shoulder section of a plurality of metal wiring plates with the appropriate intervals configuration, so can improve drive coil The connection operation.

The present invention program 5 motor is provided with the motor mounting datum level at the motor substrate, institute With can be easily and carry out accurately the motor mounting operation.

The present invention program 6,7 motor can be also used as other motor substrates, can abandon other thus The motor substrate is sought low cost and miniaturization, further improves simultaneously the planar rigidity of electronic substrate.

The present invention program 8 motor has at the fore-end integrative installation technology of the conducting portion of metal wiring plate Connecting portion can use the connector that is made of other members, so can further reduce cost.

The present invention program 9 motor, the conducting portion of above-mentioned metal wiring plate is made of plate-like members, The almost integral face of the relative said stator iron core of a plurality of conducting portions extends simultaneously, has the above-mentioned motor of reinforcement Almost integral face effect is so can further improve the planar rigidity of motor substrate.

Claims

1, a kind of motor, described motor comprises rotor and stator, it is characterized in that, be fixed on and twine heterogeneous drive coil in the stator core on the motor substrate, each end portion of these heterogeneous drive coils of while, they are connected to each coil connecting portion of the metal wiring plate of conduction, and this metal wiring plate is embedded in above-mentioned motor substrate inboard; With the proper spacing configuration, the metal wiring plate of above-mentioned a plurality of conductions is respectively equipped with the conducting portion that export-oriented side is extended from above-mentioned each coil connecting portion along radial direction to each coil connecting portion of the metal wiring plate of above-mentioned a plurality of conductions simultaneously along circumferentially; The periphery of the relative said stator iron core of these conducting portions is extended, and towards an external connecting portion convergence arrangement.

2, motor according to claim 1, it is characterized in that, each coil connecting portion of the metal wiring plate of above-mentioned a plurality of conductions is made of near a plurality of portion of terminal each end portion that extends to above-mentioned heterogeneous drive coil, and above-mentioned a plurality of portion of terminal edge is circumferentially with almost equal arranged spaced.

3, motor according to claim 1 is characterized in that, each coil connecting portion of the metal wiring plate of above-mentioned a plurality of conductions is made of a plurality of shoulder portion that is located at respectively on above-mentioned each conducting portion, and above-mentioned a plurality of each shoulder portion are along circumferentially disposing with appropriate intervals.

4, motor according to claim 1 is characterized in that, the conducting portion of the metal wiring plate of above-mentioned conduction is made of plate-like members, and above-mentioned each portion of terminal forms at a distolateral warpage of the conducting portion that is made of above-mentioned planar plate members simultaneously.

5, motor according to claim 1 is characterized in that, above-mentioned motor substrate is provided with the motor mounting datum level.

6, motor according to claim 1 is characterized in that, above-mentioned motor substrate can be used as the relay substrate of the motor substrate that is used for other motor, is provided with the splicing ear that other motor are used as the motor substrate of relay substrate.

7, motor according to claim 6 is characterized in that, the conducting portion of the splicing ear that described other motor are used is also towards above-mentioned external connecting portion convergence arrangement.

8, motor according to claim 1 is characterized in that, the external connecting portion of the metal wiring plate of above-mentioned conduction is arranged on the connector construction.

9, motor according to claim 1 is characterized in that, the conducting portion of the metal wiring plate of above-mentioned conduction is a plate-like members, and described a plurality of conducting portion dispersed placement are in the plane of described motor substrate, to strengthen described substrate simultaneously.