CN102386707B - Motor - Google Patents

Abstract

The present invention provides a motor getting a windings insulating member to be easily inserted into a slot, wherein the both axial sides of the stator core (10) provided with a magnetic yoke and teeth (12)is provided with an end portion insulating member (20), the end portion insulating member (20) is provided with a first member (30) being arranged at a position opposite to the tooth front end portion (14) and extending along the axial direction, a second member (40) configured at a posiiton opposite to the magnetic yoke (11), and a connecting portion (50) configured at a position opposite to a tooth root portion (13) and used for connecting the first and second member (40). on at least one end portion insulating member of the end portion insulating member (20) and at both axial end portions of the first member (30) there are provided a step portion (31) and a gap cutting portion (32) (guide portion), and the first windings insulating member (70) is guided into a inserting slot (15) by the gap cutting portion (32) and fixed in the slot (15) by the step portion (31).

Description

Motor

Technical field

The present invention relates to motor, relate in particular to the technology of inserting the winding insulation member in the groove of the stator of motor.

Background technology

As the concentrated winding method that stator winding is wound on the known tooth (teeth) that stator winding directly is wrapped in the stator core of stator of winding mode on stator.For example, disclose to utilize in patent documentation 1 (TOHKEMY 2002-112488 communique) and concentrate winding method that stator winding is wound on motor on stator.

Concentrate in the motor of winding method in such use, outstanding and defective insulation occurs between adjacent stator winding in groove from channel opening section in order to prevent stator winding, in winding insulation member insertion groove.For example, the cross section is in the winding insulation member insertion groove of V word shape (with reference to Figure 10).In the peristome and channel opening section mode (by winding insulation member covering channel opening section) insertion groove in opposite directions of this winding insulation member with V word shape.Thus, can prevent that stator winding is outstanding from channel opening section.In addition, this winding insulation member is with in the mode insertion groove that disposes the winding insulation member between adjacent stator winding.Thus, can prevent from defective insulation occurring between groove internal stator winding.The winding insulation member of this V word shape is called as " phase insulation member ".Perhaps, the cross section forms the winding insulation member insertion groove interior (with reference to Figure 27) of linearity.The winding insulation member of linearity covers in the mode insertion groove of channel opening section with the winding insulation member.The winding insulation member of this linearity is called as " wedge insulating component ".In addition, the circumferential both ends of winding insulation member are clamped between the stator winding and tooth that is disposed in groove.

Patent documentation 1:JP JP 2002-112488 communique.

Usually, use the insulating component of thin sheet (film-form) as winding insulation member (the winding insulation member of V word shape or the winding insulation member of linearity).Therefore, between the stator winding that is difficult to make the circumferential both ends of winding insulation member to be clamped in to be disposed in groove and tooth with in winding insulation member insertion groove.Especially in groove during a plurality of stator winding of configuration, while very difficultly prevent that the bending of winding insulation member is positioned at the circumferential both ends of winding insulation member and insert the winding insulation member between stator winding and tooth.

Summary of the invention

The application's invention proposes in view of this point, and its purpose can be easily with the technology in winding insulation member insertion groove for providing.

Motor of the present invention can be as being arranged on the drive motor of the compressor on refrigerator or air regulator etc., the drive motor of vehicle, the drive motor of mobile unit etc.

Motor of the present invention has stator and rotor.Stator has stator core, slot liner member, stator winding, winding insulation member and overhang insulation member.In addition, motor of the present invention can constitute the motor (outward rotation type motor) that motor (interior rotatable motor) that rotor can be supported on the inboard of stator rotatably or rotor can be supported on the outer circumferential side of stator rotatably.

Stator core has yoke and a plurality of tooth.Stator core is stacked and consist of vertically with tabular component, and typical example is for consisting of laminal electromagnetic steel plate is stacked vertically." axially " be illustrated in rotor be supported for can the state with respect to stator rotation under, the direction of the rotating shaft of rotor, that is, the direction of rotation centerline.Yoke with axially vertical cross section on when observing, along circumferentially extending." circumferentially " be illustrated in axially vertical cross section on when observing, the circumferencial direction centered by rotation centerline.As typical example, yoke forms ring-type (comprising roughly ring-type).Each tooth has tooth root section and tooth leading section, with axially vertical cross section on when observing, described tooth root section radially extends from yoke, described tooth leading section is arranged on the front of tooth root section, along circumferentially extension, and described tooth leading section is formed with the tooth front end face in a side opposite with the yoke side." radially " be illustrated in axially vertical cross section on when observing, the direction vertical with rotation centerline.In the situation that motor is interior rotatable motor, tooth extends to radially inner side from yoke, in the situation that motor is the outward rotation type motor, tooth extends to radial outside from yoke.Have the space between rotor and tooth front end face, and be supported for and rotate.Suitably select the direction of tooth extension according to the type of motor.For example, can be supported on rotatably in the interior rotatable motor of inboard of stator at rotor, the teeth directional radially inner side extends, and can be supported on rotatably in the outward rotation type motor in the outside of stator at rotor, and the teeth directional radial outside extends.

Two teeth and yoke form groove by making progress in the week in a plurality of teeth adjacent.Form opening between the tooth leading section of two teeth of groove.In each groove across the slot liner member dispose stator winding.As typical example, the slot liner member uses the insulating component with flexible sheet (film-form).Winding mode as stator winding uses concentrated winding method.

The winding insulation member is clamped in the stator winding and the state insertion groove between tooth that is disposed in groove with the circumferential both ends of this winding insulation member, and stops up at least the opening of groove.The winding insulation member can be configured between slot liner member and stator winding, also can be configured between slot liner member and tooth leading section.As typical example, the winding insulation member uses the insulating component with flexible sheet (film-form).In addition, can use the winding insulation member of the various shapes of the opening that can stop up groove.

The overhang insulation member is configured in the axial both sides of stator core.As the overhang insulation member, for example use resinous insulating component.The overhang insulation member has: the first member, be configured in the tooth leading section position in opposite directions with tooth, and along circumferentially extending; Second component is configured in and yoke position in opposite directions; Connecting elements is configured in the tooth root section position in opposite directions with tooth, is used for connecting the first member and second component.Stator winding is configured at the overhang insulation member under the state of axial both sides of stator core, directly is wrapped in tooth and is configured on connecting portion with tooth root section position in opposite directions.In addition, preferably when the overhang insulation member was configured in the axial both sides of stator core, the face of the rotor-side of the first member was not outstanding from the tooth front end face to rotor-side.

In addition, be provided with end difference and guide portion on the circumferential both ends of the first member of at least one the overhang insulation member in the overhang insulation member.End difference has from the open side of groove along circumferentially cutting away the shape that forms with the axial end part in opposite directions of stator core.End difference preferably forms by comprising with the face of the face of the axial end of stator core parallel (comprising almost parallel).End difference preferably has in the shape that radially connects, and cuts away the side that the footpath makes progress and the shape that forms but also can have.Guide portion forms vertically with end difference and is communicated with.Guide portion is as long as be communicated with end difference.That is, guide portion can be formed at least a portion vertically of circumferential end of the first member, also can connect vertically the circumferential end of the first member.

The winding insulation member at circumferential both ends by the guiding of the guide portion of the first member and in insertion groove, the end difference locking by axial end portion and the first member is fixed in groove in addition.In the preferred winding insulation member state insertion groove that circumferentially interval at both ends has dwindled being applied in the external force strain, in groove, external force reduces, and by elastic recovering force, circumferentially the interval at both ends becomes large, axial end portion and end difference locking.

In the present invention, can utilize the guide portion of the first member of overhang insulation member with in winding insulation member insertion groove.Thus, can be easily the circumferential both ends of winding insulation member be positioned between the stator winding and groove that is configured in groove.In addition, can pass through the interior winding insulation member of the fixing insertion groove of end difference of the first member of end winding member.Thus, can reliably the winding insulation member be fixed in groove.

In different modes of the present invention, the slot liner member is outstanding from the axial end of stator core.Be preferably with the slot liner member below the length on the end difference of the first member of overhang insulation member axial from the outstanding length setting of the axial end of stator core.

In the manner, can prevent the border generation defective insulation at the axial end of overhang insulation member and stator core.

In other other modes of the present invention, the winding insulation member, with axially vertical cross section on observe bending and be V word shape (comprising roughly V word shape).And, in the opening mode insertion groove in opposite directions of winding insulation member with the peristome of V word shape and groove.At this moment, the part (main part) of the peristome of formation V word shape is configured between stator winding adjacent in groove.In the state insertion groove that the interval of winding insulation member peristome of V word shape to be applied in the external force strain of preferred V word shape has diminished, in groove, external force reduces, and the interval of the peristome of V word shape becomes large by elastic recovering force, and axial end portion and end difference lock.

In the manner, can prevent that stator winding is outstanding and produce defective insulation between adjacent stator winding in groove from the opening of groove to rotor-side.

In the situation that use the winding insulation member of V word shape, circumferentially both ends are preferably the kink that forms to a lateral buckling opposite with the peristome side of V word shape.In this case, kink is clamped between the stator winding and tooth that is disposed in groove in addition by the guiding of the guide portion of the first member of overhang insulation member.Thus, easily in the winding insulation member insertion groove with V word shape.

In other other modes of the present invention, the winding insulation member with axially vertical cross section on when observing, form linearity (comprising roughly linearity).And, in the mode insertion groove of winding insulation member with the opening of obstruction groove.

In the manner, can be easily will be used for preventing in the stator winding winding insulation member insertion groove outstanding from the opening of groove to rotor-side.

In other other modes of the present invention, guide portion is made of incised notch section, and this incised notch section has vertically the shape of at least a portion by in the part of rotor-side at the circumferential both ends of the first member being cut away and forming.

In the manner, the position that will insert the winding insulation member is seen by the incised notch section by rotor-side that can easily pass the circumferential both ends that are formed on the first member.Thus, can improve the efficient of inserting the operation of winding insulation member in the groove.

In the situation that consist of guide portion by the incised notch section of the shape that forms by the part of rotor-side with the circumferential both ends of cutting away the first member, the radial width A at all forward end place of preferred tooth leading section, with at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, the circumferential end of tooth front end face and the first member by the radial width B between the face of rotor-side, satisfy A≤B." at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, the circumferential end of tooth front end face and the first member by the radial width between the face of rotor-side " is corresponding to " leaning on circumferential front most and leaning on radial width between the axial end side part Q of stator core most on tooth front end face and the face that forms incised notch section ".

In other other modes of the present invention, guide portion is made of incised notch section, and this incised notch section has vertically the shape of at least a portion in the part of the side opposite with rotor-side at the circumferential both ends of the first member being cut away and forming.

In the manner, because the part of a side opposite with rotor-side at the circumferential both ends of the first member is cut off, so can easily the winding insulation member be inserted in guide portion.Thus, improve the efficient of inserting the operation of winding insulation member in the groove.

In the situation that by the part of the side opposite with rotor-side at the circumferential both ends of cutting away the first member and the incised notch section that forms consists of guide portion, the radial width A at all forward end place of preferred tooth leading section, with at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, radial width C between the face of tooth front end face and a circumferential end and side that rotor-side is opposite of the first member is set as and satisfies A≤C." at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, the radial width between the face of tooth front end face and a circumferential end and side that rotor-side is opposite of the first member " is corresponding to " leaning on circumferential front most and leaning on radial width between the axial end side part Q of stator core most on tooth front end face and the face that forms incised notch section ".

In other other modes of the present invention, guide portion is made of the groove on the circumferential end that is formed on vertically the first member.This groove is by the face that leans on rotor-side and lean on the face of a side opposite with rotor-side to form.

In the manner, guide portion is made of groove, thereby can be by the face that leans on rotor-side that forms groove and the face guiding winding insulation member that leans on a side opposite with rotor-side.Thus, improve the efficient of inserting the operation of winding member in the groove.

In the situation that consist of guide portion by the groove of the circumferential end that is formed on the first member, the radial width A at all forward end place of preferred tooth leading section, with at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, the tooth front end face and form in the face of groove by the radial width D between the face of rotor-side, be set as and satisfy A≤D." at all forward end place of the circumferential end of the first member and by the position of the axial end side of stator core, in tooth front end face and the face that forms groove by the radial width between the face of rotor-side " corresponding to " the tooth front end face with form groove by leaning on circumferential front and leaning on radial width between the axial end side part Q of stator core on the face of rotor-side ".

In motor of the present invention, can be easily with in winding insulation member insertion groove.

Description of drawings

Fig. 1 is the stereogram of stator of the motor of the first execution mode.

Fig. 2 is the partial enlarged drawing at the II place of Fig. 1.

Fig. 3 is the partial enlarged drawing at the III place of Fig. 1.

Fig. 4 is the partial top view of stator of the motor of the first execution mode.

Fig. 5 is the stereogram of the first winding insulation member.

Fig. 6 is that explanation is with the figure of the action in the groove of the stator of the motor of first winding insulation member insertion the first execution mode.

Fig. 7 means the partial enlarged drawing with the state before the groove of the stator of the motor of first winding insulation member insertion the first execution mode.

Fig. 8 means the partial enlarged drawing that inserts the state of the first winding insulation member to the groove of the stator of the motor of the first execution mode.

Fig. 9 means the partial enlarged drawing that the first winding insulation member is inserted the state in the groove of stator of motor of the first execution mode.

Figure 10 means the cutaway view that the first winding insulation member is inserted the state in the groove of stator of motor of the first execution mode.

Figure 11 is the partial enlarged drawing of stator of the motor of the second execution mode.

Figure 12 is the partial enlarged drawing of stator of the motor of the 3rd execution mode.

Figure 13 is the partial enlarged drawing of stator of the motor of the 4th execution mode.

Figure 14 is the partial enlarged drawing of stator of the motor of the 5th execution mode.

Figure 15 is the partial enlarged drawing of stator of the motor of the 6th execution mode.

Figure 16 is the partial enlarged drawing of stator of the motor of the 7th execution mode.

Figure 17 is the partial enlarged drawing of stator of the motor of the 8th execution mode.

Figure 18 is the partial enlarged drawing of stator of the motor of the 9th execution mode.

Figure 19 is the partial enlarged drawing of stator of the motor of the tenth execution mode.

Figure 20 is the partial top view of stator of the motor of the tenth execution mode.

Figure 21 is the partial enlarged drawing of stator of the motor of the 11 execution mode.

Figure 22 is the stereogram of the second winding insulation member.

Figure 23 is that the figure of the action of the second winding insulation member is inserted in explanation to the groove of the stator of the motor of the first execution mode.

Figure 24 means the partial enlarged drawing with the state before the groove of the stator of the motor of second winding insulation member insertion the first execution mode.

Figure 25 means the partial enlarged drawing that inserts the state of the second winding insulation member to the groove of the stator of the motor of the first execution mode.

Figure 26 means the partial enlarged drawing that the second winding insulation member is inserted the state in the groove of stator of motor of the first execution mode.

Figure 27 means the cutaway view that the second insulating component is inserted the state in the groove of stator of motor of the first execution mode.

Figure 28 is the partial enlarged drawing of stator of the motor of the 12 execution mode.

Figure 29 is the partial top view of stator of the motor of the 12 execution mode.

Embodiment

Below, the execution mode of use description of drawings motor of the present invention.

The motor of each execution mode that the following describes has stator and is supported for can be with respect to the rotor of stator rotation.Constitute the stator of 3 phase 6 utmost points with 9 grooves as stator.In addition, as the winding mode of stator winding, use stator winding directly is wrapped in concentrated winding method on tooth.

In addition, in this manual, " axially " is illustrated in that rotor is supported for can be with respect to the direction of the rotating shaft of the rotor under the state of stator rotation, that is, and and the direction of rotation centerline.In addition, " circumferentially " be illustrated in rotor be supported for can the state with respect to stator rotation under, with axially vertical cross section on when observing, the circumferencial direction centered by rotation centerline.In addition, " radially " be illustrated in rotor be supported for can the state with respect to stator rotation under, with axially vertical cross section on when observing, the direction vertical with rotation centerline.

In addition, the following describes rotor and be supported for the interior rotatable motor that can be rotated at the radially inner side of stator.

The motor of the first execution mode of the present invention is described.Figure 1 illustrates the stator 1 of the motor of the first execution mode.In addition, Fig. 2 is the partial enlarged drawing of the II section of Fig. 1, and Fig. 3 is the partial enlarged drawing of the III section of Fig. 1, and Fig. 4 is the partial top view of stator 1.

Not shown rotor in Fig. 1 uses known rotor as rotor.For example, use the rotor that has the magnet containing hole and be contained in the permanent magnet in the magnet containing hole.Rotor is supported for can be with respect to stator 1 rotation.At this moment, rotor is that the rotating shaft of rotor is rotated centered by rotation centerline P.

Stator 1 has stator core 10, stator winding 17, overhang insulation member 20, slot liner member 60, winding insulation member.In addition, in the present embodiment, for the structure of easy to understand overhang insulation member 20, not shown stator winding 17.Stator winding 17 has been shown in Figure 10 and Figure 27.The narration of winding insulation member back.

Stator core 10 is tabular electromagnetic steel plates of laminated thin and forming by formation one such as automatic clamping devices vertically.

As Figure 10 and shown in Figure 27, stator core 10 has yoke 11 and a plurality of tooth 12.With axially vertical cross section on when observing, yoke 11 is along circumferential extension.In the present embodiment, yoke 11 forms ring-type (comprising roughly ring-type).With axially vertical cross section on observe and can find out, tooth 12 has: tooth root section 13, this tooth root section 13 extends to radially inner side from yoke; Tooth leading section 14 is arranged on the front of tooth root section 13, along circumferentially extending.

The rotor-side (in the present embodiment, being radially inner side) of leaning at tooth leading section 14 is formed with tooth front end face 12a.In the present embodiment, with axially vertical cross section on when observing, tooth front end face 12a forms the circular shape centered by rotor center.And rotor can be supported in the rotor accommodation space 16 that is formed by tooth front end face 12a rotatably to have the mode in space between the outer peripheral face of rotor and tooth front end face 12a.

In addition, form groove 15 by two the adjacent teeth 12 that make progress in week in yoke 11 and a plurality of tooth 12.Groove 15 (between circumferential end faces 14a of tooth leading section 14) between the tooth leading section 14 of two adjacent teeth 12 has the channel opening 15a of section.

In addition, has axial end 10a (with reference to Fig. 2) in the axial both sides of stator core 10.

Be provided with slot liner member 60 in groove 15.In the present embodiment, the slot liner member 60 that has elasticity and form sheet (film-form) is configured in groove 15.Slot liner member 60 is such as being formed by PETG (PET), PEN (PEN) etc.And, under the state in slot liner member 60 has been arranged on groove 15, by concentrating winding method coiling stator winding 17.That is, stator winding 17 is in slot liner member 60 is configured in groove 15.In the present embodiment, dispose adjacent stator winding 17 in same groove 15.In the present embodiment, because use the slot liner member 60 of sheet, thus can increase area groove 15 and axially vertical cross section, thus can reel a lot of stator winding.

Overhang insulation member 20 is arranged on the axial both sides (with axial end 10a position in opposite directions) of stator core 10.In the present embodiment, overhang insulation member 20 is such as being formed by polyphenylene sulfide (PPS), polybutylene terephthalate (PBT) (PBT), liquid crystal polymer (LCP) etc.

Overhang insulation member 20 has: the first member 30 is configured in tooth leading section 14 position in opposite directions with tooth 12; Second component 40 is configured in and yoke 11 position in opposite directions; Connecting elements 50 is configured in tooth root section 13 position in opposite directions with tooth 12, is used for connecting the first member 30 and second component 40.In the present embodiment, with axially vertical cross section on when observing, the first member 30 extends along circumferentially (under overhang insulation member 20 is configured to axial end 10a state in opposite directions with stator core 10, along tooth leading section 14).In addition, with axially vertical cross section on when observing, second component 40 extends along circumferentially (under overhang insulation member 20 is configured to axial end 10a state in opposite directions with stator core 10, along the yoke 11 of stator core 10).In addition, with axially vertical cross section on when observing, connecting elements 50 radially (under overhang insulation member 20 is configured to axial end 10a state in opposite directions with stator core 10, along tooth root section 13) extends.In addition, the first member 30 and second component 40 are along extending axially.In addition, preferably under overhang insulation member 20 is configured to axial end 10a state in opposite directions with stator core 10, the first member 30 by the face of the rotor-side face (inner peripheral surface) of radially inner side (in the present embodiment, for) 30a not from tooth front end face 12a to rotor-side (radially inner side of present embodiment) outstanding.The connecting portion 50 of overhang insulation member 20 uses with concentrated winding method coiling stator winding 17 time.

In addition, at least one overhang insulation member of overhang insulation member 20, be provided with on the first member 30: guide portion is used for easily carrying out the operation that winding insulation member insertion groove 15 is interior; End difference 31 is used for preventing that winding insulation member (back detailed description) from extracting in the axial direction in groove 15.In the present embodiment, use incised notch section 32 as guide portion, described incised notch section 32 has cuts away with the part by rotor-side of the circumferential end of the first member part of radially inner side (in the present embodiment, for) shape that forms.In addition, in the situation that know that the winding insulation member is easy to the direction that comes off from groove 15, end difference 31 and incised notch section (guide portion) 32 preferably are set on the overhang insulation member 20 that configures on the direction of winding insulation member difficult drop-off, and use the incised notch section (guide portion) 32 that is arranged on this overhang insulation member 20 with in winding insulation member insertion groove 15.Certainly, end difference 31 and incised notch section (guide portion) 32 can be arranged on the overhang insulation member 20 of the axial both sides that are disposed at stator core 10.

End difference 31 and the incised notch section (guide portion) 32 of present embodiment are described with reference to the partial enlarged drawing of Fig. 2 and Fig. 3.

The first member 30 is along the circumferential end 30B of the circumferential both sides that circumferentially are divided into circumferential central portion 30A and circumferential central portion 30A.

End difference 31 has from the channel opening 15a of section side (with the first member 30 side in opposite directions that makes progress in week adjacent) along circumferentially the circumferential end 30B of the first member 30 being cut away with axial end 10a stator core 10 part in opposite directions the shape that forms.That is, end difference 31 is to radially inner side, radial outside and the channel opening 15a of section side opening.End difference 31 forms face 31a by end difference and 31b forms.End difference forms face 31a towards the channel opening 15a of section side, and end difference forms face 31b towards the axial end 10a of stator core 10 side.As described later, outstanding from groove 15 for the winding insulation member that prevents from being inserted in groove 15, the axial end portion of winding insulation member locks at end difference and forms on face 31b.Therefore, preferably end difference being formed face 31b forms with the axial end 10a of stator core 10 parallel (comprising almost parallel).

The incised notch section 32 of the effect of performance guide portion has along axial perforation circumferential end 30B ground with the part of leaning on rotor-side of the circumferential end 30B of the first member (in the present embodiment, part for radially inner side) cut away the shape that forms, described incised notch section 32 can be communicated with end difference 31.That is, incised notch section 32 both sides, the channel opening 15a of the section side opening to radially inner side (rotor-side), on axially.Incised notch section 32 forms face 32a by incised notch section and 32b forms.Incised notch section forms face 32a towards the channel opening 15a of section side, and the incised notch formation face 32b of section is towards radially inner side (rotor-side).

Be formed with protuberance 41 and recess 42 on second component 40, in order to lock the end of stator winding 17, perhaps, pull out lead-out wire.That is, the end that directly is wrapped in the stator winding 17 on the connecting portion 50 of tooth 12 and overhang insulation member 20 is that lead-out wire is pulled out to the outer circumferential side of second component 40 from recess 42, locks with protuberance 41.Thus, can prevent that lead-out wire from contacting with each other and producing the phenomenon of defective insulation.

And, in the present embodiment, in order to prevent the boundary portion between stator core 10 and overhang insulation member 20, on-insulated bad phenomenon occurs, slot liner member 60 is outstanding from the axial end 10a of stator core 10 in the axial direction.Consider the insulation distance of stator winding 17 and stator core 10, the outstanding length setting of slot liner member 60 is in the scope of 2mm～4mm.

In addition, as described later, in the present embodiment, in order to prevent that the interior winding insulation member of insertion groove 15 is given prominence to from groove 15, the axial end portion of winding insulation member and end difference form face 31b and lock.Therefore, end difference 31 length (end difference forms face 31a length in the axial direction) is in the axial direction set slightly longlyer from the outstanding length of axial end 10a than slot liner member 60.In the present embodiment, end difference 31 length setting in the axial direction is about about 0mm～0.5mm for the outstanding length than slot liner member 60.Thus, even slot liner member 60 has occured in the situation of motion in the axial direction, also can make reliably stator winding 17 and stator core 10 insulation.

Then, the winding insulation member that is inserted in groove 15 is described.

Fig. 5 shows the first winding insulation member 70.Use as the first winding insulation member 70 insulating component that has elasticity and form sheet (film-form).The first winding insulation member 70 has been bent to form main part 71a and 71b, with axially vertical cross section on when observing, main part 71a and 71b are V word shape (comprising roughly V word shape).In addition, circumferential both ends 72a, 72b are to a lateral buckling opposite with the peristome side of V word shape.That is, with axially vertical cross section on observe and can find out, the first winding insulation member 70 has: main part 71a, 71b bend and are V word shape (comprising roughly V word shape); Kink 72a, 72b bend laterally from main part 71a, 71b.

With reference to Fig. 6～Fig. 9 explanation, the first winding insulation member 70 is inserted the interior action of groove 15 of stator core 10.Fig. 6 means the stereogram with the action in the first winding insulation member 70 insertion grooves 15.In addition, Fig. 7～Fig. 9 means respectively the partial enlarged drawing with the state before in the first winding insulation member 70 insertion grooves 15, the state that is inserting, the state that inserted.

The first winding insulation member 70 insertion grooves 15 when interior, applied external force and make the first winding insulation member 70 strains, make the interval between circumferential both ends diminish.For example, make with the shape in axially vertical cross section and form T word shape.Then, as shown in Figure 7, kink 72a, the 72b of circumferential both end sides is configured in the position of incised notch section (guide portion) 32, main part 71a, 71b are configured in connecting portion 50 directly are wrapped in respectively between stator winding 17 on adjacent tooth 12.Then, under this state, the first winding insulation member 70 is moved vertically.At this moment, make the first winding insulation member 70 mobile along the incised notch section 32 of the first member 30 (forming face 32a, 32b along the incised notch section that forms incised notch section 32).In addition, the interval between main part 71a, 71b (circumferentially both ends between intervals) is subject to forming in the incised notch section of the interval between the circumferential end of the first adjacent member 30 that makes progress in week or the first member 30 restriction at the interval between face 32.

Kink 72a, the 72b at the circumferential both ends of the first winding insulation member 70 can insertion groove insulating components 60 and be configured between stator winding 17 in groove 15, also can insertion groove insulating component 60 and tooth leading section 14 between.In the present embodiment, the kink 72a at the circumferential both ends of the first winding insulation member 70,72b insertion groove insulating component 60 and be disposed between stator winding 17 in groove 15.

At this, in the present embodiment, because slot liner member 60 is outstanding from the axial end 10a of stator core 10 in the axial direction, so can be easily kink (circumferential end) 72a, the 72b of the first winding insulation member 70 be positioned between slot liner member 60 and stator winding 17.

When the first winding insulation member 70 being inserted into groove 15 when interior (when the first winding insulation member 70 has passed through incised notch section 32), the circumferential end or the incised notch section that remove the first member 30 form face 32a to the restriction of the first winding insulation member 70, make interval between the circumferential both ends of the first winding insulation member 70 enlarge (being V word shape with the recovery of shape in axially vertical cross section) by elastic recovering force.And the end difference that is used to form end difference 31 that the axial end portion 73a of the first winding insulation member 70 locks at the first member 30 forms on face 31b.In addition, the first winding insulation member 70 length setting in the axial direction must be longer than the axial length of stator core 10, makes the axial end portion of the first winding insulation member 70 outstanding from the axial end 10a of stator core 10 in the axial direction.

Figure 10 illustrates the first winding insulation member 70 partial sectional view of the state in insertion groove 15.

When the first winding member 70 is inserted into groove 15 when interior, the opening of V word shape and the channel opening 15a of section are in opposite directions.Thus, because the channel opening 15a of section is stopped up by the first winding insulation member 70, (to be in the present embodiment radially inner side) from the channel opening 15a of section to rotor-side outstanding so can prevent from being configured in stator winding 17 in groove 15.In addition, main part 71a, 71b are configured between the interior adjacent stator winding 17 of groove 15.Thus, can prevent that 17 of the interior adjacent stator winding of groove 15 from producing defective insulation.

In the present embodiment, in the circumferential end of the first member 30 of overhang insulation member 20, be provided with formation incised notch section 32 in the axial direction and be used as guide portion.Thus, can be easily with in the first winding insulation member 70 insertion grooves 15.In the present embodiment, be formed with the circumferential end of the first member 30 by rotor-side (in the present embodiment, be radially inner side) part cut away the incised notch section 32 that forms, so can be easily from the side that configuring overhang insulation member 20 and rotor-side (in the present embodiment, be radially inner side) by incised notch section 32, naked eyes are seen the insertion position of the first winding insulation member 70 in groove 15.

In addition, be provided with end difference in the circumferential end of the first member 30 of overhang insulation member 20, this end difference has from the channel opening 15a of section side along circumferentially leaning on the part of the axial end 10a side of stator core 10 to cut away the shape that forms.Thus, lock because be inserted in axial end portion 73a and the end difference 31 (end difference forms face 31b) of the first winding insulation member 70 in groove 15, so can prevent that the first winding insulation member 70 from coming off in the axial direction.

In addition, with in the first winding insulation member 70 insertion grooves 15, preferably be set as Fig. 3 and width A, B shown in Figure 4 following such for easily.

At this, width A is the radial width at all forward end place of tooth leading section 14.In addition, width B is at all forward end place of the circumferential end of the first member 30 and leans on the position of the axial end 10a side of stator core 10, the face that leans on rotor-side of the circumferential end of tooth front end face 12a and the first member 30 (in the present embodiment, face for radially inner side) radial width between (in Fig. 3, section forms face 32b for incised notch).And, be preferably set to and satisfy A≤B.More preferably be set as satisfied (thickness of A+ slot liner member 60)≤B.

In the situation that consist of like this, move along the incised notch formation face 32b of section by the kink 72a, 72 that makes the first winding member 70, even the first thin and be easy to bend winding insulation member 70 also can be easily with between kink 72a, 72b insertion groove insulating component 60 and stator winding 17.

the motor of present embodiment can constitute: " end difference 31 forms face (31a and 31b) by the first and second end differences and forms, the first end difference forms face 31a towards the opening 15a of groove side, the second end difference forms face 31b towards the axial end 10a of stator core 10 side, guide portion 32 has vertically, and perforation ground cuts away with the part by rotor-side of the circumferential end of the first member 30 shape that forms, and this guide portion 32 forms face (incised notch section form face 32a and 32b) by the first and second guide portion and forms, the first guide portion forms face 32a towards the opening 15a of groove side, the second guide portion forms face 32b towards rotor-side ".

The overhang insulation member that is configured in the axial both sides of stator core 10 is not limited to Fig. 1～structure shown in Figure 3.Below, the motor of the second to the 9th execution mode is described.The structure of the incised notch section of the first member of the overhang insulation member of the motor of the second to the 9th execution mode is different from the motor of the first execution mode.

Figure 11 illustrates the partial enlarged drawing of stator of the motor of the second execution mode.

In the motor of present embodiment, the end difference 131 of the first member 130 is identical with the end difference 31 of the first execution mode, is formed face 131a and formed face 131b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, both sides and the channel opening section 15a side opening of the incised notch section 132 of playing the guide portion effect to rotor-side (being in the present embodiment radially inner side), on axially, and the circumferential end of the first member 130 is connected vertically.Incised notch section 132 forms face 132a by incised notch section and 132b forms.Incised notch section forms face 132a towards the channel opening 15a of section side, and the incised notch formation face 132b of section is towards rotor-side (in the present embodiment, being radially inner side).And incised notch section forms face 132b and is formed with inclined plane 133 in the position that circumferential front is positioned at by axial end 10a one side of stator core 10.

In the situation that the stator winding 17 that is configured in groove 15 has damaged, take out stator winding 17 from groove 15.At this moment, if stator winding 17 be stuck in the first member 130 end difference 131 (end difference that forms end difference 131 forms face 131b) by on the bight of the channel opening 15a of section side, can hinder the disassembling section of stator winding 17.In the present embodiment, because the circumferential front at the incised notch formation face 132b of section, position in the axial end 10a side of leaning on stator core 10 is formed with inclined plane 133, so when taking out stator winding 17 from groove 15, can prevent that stator winding 17 is stuck on the end difference 131 of the first member 130 and produces damage.Thus, present embodiment has the effect of the first execution mode, and can easily take out stator winding 17 from groove 15.

The motor of present embodiment can constitute: " guide portion 132 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 130 is cut away the shape that forms; and forms face (incised notch section forms face 132a and 132b) by the first and second guide portion and forms; the first guide portion formation face 132a is towards the opening 15a of groove side; the second guide portion formation face 132b is towards rotor-side, and is formed with inclined plane 133 in the position that circumferential front is positioned at by axial end 10a one side of stator core 10 ".

Figure 12 illustrates the partial enlarged drawing of stator of the motor of the 3rd execution mode.

In the motor of present embodiment, the end difference 231 of the first member 230 is identical with the end difference 31 of the first execution mode, is formed face 231a and formed face 231b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, both sides, the channel opening section 15a side opening of the incised notch section 232 of playing the guide portion effect to rotor-side (being in the present embodiment radially inner side), on axially, and the circumferential end of the first member 230 is connected vertically.Incised notch section 232 forms face 232a, 232b by incised notch section and 232c forms.Incised notch section forms face 232a towards the channel opening 15a of section side, and the incised notch formation face 232b of section and 232c are towards rotor-side (in the present embodiment, being radially inner side).And, with circumferentially vertical cross section on when observing, incised notch section forms face 232c and tilts, the part of the axial end 10a side of leaning on stator core 10 of this incised notch formation face 232c of section is leaned on the part of the incised notch formation face 232b of section side relatively, be positioned at a side opposite with rotor-side (in the present embodiment, being radial outside).

In the present embodiment, not only from configuring a side of overhang insulation member, and also can naked eyes see the insertion position of the first winding insulation member 70 in groove 15 from rotor-side (in the present embodiment, being radially inner side).Thus, can be with the first winding insulation member 70 more reliably in insertion groove 15.In addition, because the incised notch section by the axial end 10a side of stator core 10 in the incised notch section formation face of the first member 230 forms face 232c and tilts, so kink 72a, the 72b of the first winding insulation member 70 are moved along the incised notch formation face 232c of section, thereby can be more reliably between kink 72a, 72b insertion groove insulating component 60 and the stator winding 17 with the first winding insulation member 70.

The motor of present embodiment can constitute: " guide portion 232 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 230 is cut away the shape that forms, and forms face (incised notch section form face 232a, 232b and 232c) by first, second, and third guide portion and form; The first guide portion forms face 232a towards the opening 15a of groove side; The second guide portion forms face 232b towards rotor-side; The 3rd guide portion forms face 232c towards rotor-side, and be configured to form face 232b than the second guide portion and more lean on the axial end 10a side of stator core 10, in addition, with circumferentially vertical cross section on when observing, the 3rd guide portion forms face 232c and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of the 3rd guide portion formation face 232c is relatively opposite with the axial end 10a side of stator core 10 (by the second incised notch formation face 232b of section one side) is positioned at a side opposite with rotor-side ".

Figure 13 illustrates the partial enlarged drawing of stator of the motor of the 4th execution mode.

In the motor of present embodiment, the end difference 331 of the first member 330 is identical with the end difference 31 of the first execution mode, is formed face 331a and formed face 331b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, both sides and the channel opening section 15a opening of the incised notch section 332 of playing the guide portion effect to rotor-side (being in the present embodiment radially inner side), on axially, and the circumferential end of the first member 330 is connected vertically.Incised notch section 332 forms face 332a, 332b, 332c and 332d by incised notch section and forms.Incised notch section forms face 332a towards the peristome 15a of groove side, and the incised notch formation face 332b of section and 332d are towards rotor-side (in the present embodiment, being radially inner side), and the incised notch formation face 332c of section is towards the axial end 10a of stator core 10 side.In the present embodiment, with circumferentially vertical cross section on when observing, incised notch section forms the relative incised notch of face 332d section and forms face 332b and be positioned at a side opposite with rotor-side (being in the present embodiment radial outside).

In the present embodiment, be provided with for the incised notch formation face 332b of section, 332d being configured to the stair-stepping incised notch formation face 332c of section.That is, the axial end portion of the first winding insulation member 70 not only can lock at the end difference of end difference 331 and form on face 331b, and the incised notch section that can also lock in incised notch section 332 forms on face 332c.Thus, present embodiment has the effect of the first execution mode, simultaneously can also be when the vibration of motor be violent, prevent that the first winding insulation member 70 from deviating from groove 15.In addition, the first winding insulation member 70 can also be sandwiched between slot liner member 60 and the incised notch formation face 332d of section.

The motor of present embodiment can constitute: " guide portion 332 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 330 is cut away the shape that forms; and, form face (incised notch section form face 332a, 332b, 332c and 332d) by the first, second, third and the 4th guide portion and form; The first guide portion forms face 332a towards the opening 15a of groove side; The second guide portion forms face 332b towards rotor-side; The 4th guide portion forms face 332d towards rotor-side, and relative the second guide portion formation face 332b of the part of the axial end 10a side of leaning on stator core 10 of the 4th guide portion formation face 332d is positioned at a side opposite with rotor-side; The 3rd guide portion forms face 332c towards the axial end 10a of stator core 10 side, and, be configured in the second guide portion and form between face 332b and the 4th guide portion formation face 332d ".

Figure 14 illustrates the partial enlarged drawing of stator of the motor of the 5th execution mode.

In the motor of present embodiment, the end difference 431 of the first member 430 is identical with the end difference 31 of the first execution mode, is formed face 431a and formed face 431b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, both sides and the channel opening section 15a side opening of the incised notch section 432 of playing the guide portion effect to rotor-side (being in the present embodiment radially inner side), on axially, and the circumferential end of the first member 430 is connected vertically.Incised notch section 432 forms face 432a, 432b by incised notch section and 432c forms.Incised notch section forms face 432a towards the channel opening 15a of section side, and the incised notch formation face 432b of section is towards rotor-side (being radially inner side in the present embodiment), and the incised notch formation face 432c of section is towards the axial end 10a of stator core 10 side.In the present embodiment, the incised notch formation face 432b of the section Length Ratio incised notch formation face 432a of section length in the axial direction in the axial direction is short.

Present embodiment has the effect of the first execution mode, and because the incised notch formation face 432b of the section Length Ratio incised notch formation face 432a of section length in the axial direction in the axial direction is short, so when taking out stator winding 17 from groove 15, can prevent that stator winding 17 is stuck on the end difference 431 of the first member 430 and damages.In addition, large between the gap between the axial end portion of slot liner member 60 and the incised notch formation face 432c of section, so can more easily insert the first winding insulation member 70.

The motor of present embodiment can constitute: " guide portion 432 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 430 is cut away the shape that forms, and forms face (incised notch section form face 432a, 432b and 432c) by first, second, and third guide portion and form; The first guide portion forms face 432a towards the opening 15a of groove side; The second guide portion forms face 432b towards rotor-side, and the first guide portion formation face 432a of the Length Ratio axially length in the axial direction is short; The 3rd guide portion forms face 432c towards the axial end 10a of stator core 10 side, and, relative the second guide portion formation face 432b of the 3rd guide portion formation face 432c is positioned at axial end 10a one side by stator core 10, and end difference 431 (end difference that forms end difference 431 forms face 431b) is positioned at a side opposite with the axial end 10a side of stator core 10 relatively ".

Figure 15 illustrates the partial enlarged drawing of stator of the motor of the 6th execution mode.

In the motor of present embodiment, the end difference 531 of the first member 530 is identical with the end difference 31 of the first execution mode, is formed face 531a and formed face 531b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, play the incised notch section 532 of guide portion effect to rotor-side (being in the present embodiment radially inner side), the axial end 10a side of stator core 10, the channel opening 15a of section side opening, and the circumferential end of the first member 530 is connected vertically.Incised notch section 532 forms face 532a and 532b by incised notch section.Incised notch section forms face 532a towards the channel opening 15a of section side, and the incised notch formation face 532b of section is towards rotor-side (in the present embodiment, being radially inner side).In the present embodiment, with circumferentially vertical cross section on when observing, incised notch section forms face 532b and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of this incised notch formation face 532b of section is relatively opposite with axial end 10a side is positioned at a side opposite with rotor-side (being in the present embodiment radial outside).

In the present embodiment, not only from configuring the axial side of overhang insulation member, also can naked eyes see the insertion position of the first winding insulation member 70 in groove 15 from rotor-side (in the present embodiment, being radially inner side).Thus, can be more reliably with in the first winding insulation member 70 insertion grooves 15.In addition, the second incised notch formation face 532b of section of the first member 530 tilts, and this second incised notch section forms the part of relatively opposite with the axial end 10a side of stator core 10 side of the part by the axial end 10a side of stator core 10 of face 532b, is positioned at a side opposite with rotor-side (being radial outside in the present embodiment).Thus, move along the second incised notch formation face 532b of section by kink 72a, the 72b (circumferential end) that makes the first winding insulation member 70, can be more reliably between kink 72a, 72b insertion groove insulating component 60 and the stator winding 17 with the first winding insulation member 70.

The motor of present embodiment can constitute: " guide portion 532 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 530 is cut away the shape that forms, and forms face (incised notch section form face 532a and 532b) by the first and second guide portion and form; The first guide portion forms face 532a towards the opening 15a of groove side; The second guide portion forms face 532b towards rotor-side, and with circumferentially vertical cross section on when observing, the second guide portion forms face 532b and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of this second guide portion formation face 532b is relatively opposite with the axial end 10a side of stator core 10 is positioned at a side opposite with rotor-side ".

Figure 16 illustrates the partial enlarged drawing of stator of the motor of the 7th execution mode.

In the motor of present embodiment, the end difference 631 of the first member 630 is identical with the end difference 31 of the first execution mode, is formed face 631a and formed face 631b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, play the incised notch section 632 of guide portion effect to axial end 10a side and the channel opening 15a of the section side opening of rotor-side (being in the present embodiment radially inner side), stator core 10, and the circumferential end of the first member 630 is connected vertically.Incised notch section 632 forms face 632a, 632b by incised notch section and 632c forms.Incised notch section forms face 632a towards the channel opening 15a of section side, and the incised notch formation face 632b of section and 632c are towards rotor-side (in the present embodiment, being radially inner side).In the present embodiment, with circumferentially vertical cross section on when observing, incised notch section forms face 632b and tilts, and this incised notch section form face 632b the axial end 10a side by stator core 10 (incised notch section form face 632c side) part relatively with the part of the opposite side of axial end 10a side, be positioned at a side opposite with rotor-side (being radial outside in the present embodiment).

In incised notch section formation face in the present embodiment, the incised notch formation face 632b of section that is in a side opposite with the axial end 10a side of stator core 10 tilts, and this incised notch section forms the part of relatively opposite with the axial end 10a side of stator core 10 side of the part by the axial end 10a side of stator core 10 of face 632b, is positioned at a side opposite with rotor-side (being radial outside in the present embodiment).Thus, identical with the 6th execution mode, can be more reliably between kink 72a, 72b insertion groove insulating component 60 and the stator winding 17 with the first winding insulation member 70.

The motor of present embodiment can constitute: " guide portion 632 has vertically and to connect ground the part by rotor-side of the circumferential end of the first member 630 is cut away the shape that forms, and forms face (incised notch section form face 632a, 632b and 632c) by first, second, and third guide portion and form; The first guide portion forms face 632a towards the opening 15a of groove side; The second guide portion forms face 632b towards rotor-side, and, with circumferentially vertical cross section on when observing, the second guide portion forms face 632b and tilts, and the part of the side that the part of the axial end 10a side of leaning on stator core 10 of this second guide portion formation face 632b is relatively opposite with the axial end 10a side of stator core 10 is positioned at a side opposite with rotor-side; The 3rd guide portion forms face 632c towards rotor-side, and the 3rd guide portion forms relative the second guide portion of face 632c and forms the position that face 632b is positioned at axial end 10a one side and the side opposite with rotor-side that are stator core 10 ".

Figure 17 illustrates the partial enlarged drawing of stator of the motor of the 8th execution mode.

In the motor of present embodiment, the end difference 731 of the first member 730 is identical with the end difference 31 of the first execution mode, is formed face 731a and formed face 731b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, play the incised notch section 732 of guide portion effect to rotor-side (being in the present embodiment radially inner side), the axial end 10a side of stator core 10, the channel opening 15a of section side opening, this incised notch section 732 is formed on the part vertically of circumferential end of the first member 730.Incised notch section 732 forms face 732a, 732b by incised notch section and 732c forms.Incised notch section forms face 732a towards the channel opening 15a of section side, and the incised notch formation face 732b of section is towards the axial end 10a of stator core 10 side, and the incised notch formation face 732c of section is towards rotor-side (in the present embodiment, being radially inner side).In the present embodiment, incised notch section 732 is formed on the part vertically (by the part of the axial end 10a side of stator core 10) of the circumferential end of the first member 730.

In the present embodiment, incised notch section 732 (incised notch section form face 732a, 732b and 732c) is formed on the part vertically of circumferential end of the first member 730.That is, comprise that at incised notch section formation face the incised notch section towards the axial end 10a of stator core 10 side forms face 732b.Thus, identical with the 4th execution mode, the axial end portion of the first winding insulation member 70 not only can lock at the end difference of end difference 731 and form on face 731b, and the incised notch section that can also lock in incised notch section 732 forms on face 732b.Thereby, even in the situation that the vibration of motor is violent, can prevent that also the first winding insulation member 70 from deviating from groove 15.In addition, the first winding insulation member 70 can also be sandwiched between slot liner member 60 and the incised notch formation face 732c of section.

The motor of present embodiment can constitute: " guide portion 732 has vertically the part by the part of rotor-side of the circumferential end of the first member 730 is cut away the shape that forms, and forms face (incised notch section form face 732a, 732b and 732c) by first, second, and third guide portion and form; The first guide portion forms face 732a towards the opening 15a of groove side; The second guide portion forms face 732b towards the axial end 10a of stator core 10 side; The 3rd guide portion forms face 732c towards rotor-side, and the 3rd guide portion forms relative the second guide portion of face 732c, and to form that face 732b is positioned at be position by axial end 10a one side of stator core 10 and a side opposite with rotor-side ".

Figure 18 illustrates the partial enlarged drawing of stator of the motor of the 9th execution mode.

In the motor of present embodiment, the end difference 831 of the first member 830 is identical with the end difference 31 of the first execution mode, is formed face 831a and formed face 831b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, play the incised notch section 832 of guide portion effect to axial end 10a side and the channel opening 15a of the section side opening of rotor-side (being in the present embodiment radially inner side), stator core 10, this incised notch section 832 is formed on the part vertically of circumferential end of the first member 830.Incised notch section 832 forms face 832a, 832b by incised notch section and 832c forms.Incised notch section forms face 832a towards the channel opening 15a of section side, and the incised notch formation face 832b of section is towards the axial end 10a of stator core 10 side, and the incised notch formation face 832c of section is towards rotor-side (in the present embodiment, being radially inner side).In the present embodiment, with circumferentially vertical cross section on when observing, incised notch section forms face 832c and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of this incised notch formation face 832c of section is relatively opposite with axial end 10a side (the incised notch formation face 832b of section side) is positioned at a side opposite with rotor-side (being in the present embodiment radial outside).

In the present embodiment, incised notch section 832 (incised notch section form face 832a, 832b and 832c) is formed on the part vertically of circumferential end of the first member 830.That is, comprise that at incised notch section formation face the incised notch section towards the axial end 10a of stator core 10 side forms face 832b.Thus, identical with the 4th execution mode, the axial end portion of the first winding insulation member 70 not only can lock at the end difference of end difference 831 and form on face 831b, and the incised notch section that also can lock in incised notch section 832 forms on face 832b.Thereby, even in the situation that the vibration of motor is violent, can prevent that also the first winding insulation member 70 from deviating from groove 15.In addition, incised notch section forms face 832c and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of this incised notch formation face 832c of section is relatively opposite with the axial end 10a side of stator core 10 is positioned at a side opposite with rotor-side (being in the present embodiment radial outside).Thus, identical with the 6th execution mode, can be more reliably between kink 72a, 72b insertion groove insulating component 60 and the stator winding 17 with the first winding insulation member 70.

The motor of present embodiment can constitute: " guide portion 832 has vertically the part by the part of rotor-side of the circumferential end of the first member 830 is cut away the shape that forms, and forms face (incised notch section form face 832a, 832b and 832c) by first, second, and third guide portion and form; The first guide portion forms face 832a towards the opening 15a of groove side; The second guide portion forms face 832b towards the axial end 10a of stator core 10 side; The 3rd guide portion forms face 832c towards rotor-side, and the 3rd guide portion forms relative the second guide portion of face 832c, and to form that face 832b is positioned at be position by axial end 10a one side of stator core 10 and a side opposite with rotor-side, in addition, with circumferentially vertical cross section on when observing, the 3rd guide portion forms face 832c and tilts, the part of the side that the part of the axial end 10a side of leaning on stator core 10 of the 3rd guide portion formation face 832c is relatively opposite with the axial end 10a side of stator core 10 is positioned at a side opposite with rotor-side ".

In the motor of the first to the 9th execution mode, the incised notch section of playing the guide portion effect has cuts away with the part by rotor-side of the first member of overhang insulation member the shape that forms, but also can have, the part of the side opposite with rotor-side of the first member is cut away the shape that forms.

Figure 19 illustrates the partial enlarged drawing of stator of the motor of the tenth execution mode.In the present embodiment, have following incised notch section, this incised notch section has cuts away with the part of a side opposite with rotor-side (in the present embodiment, being radial outside) of the circumferential end of the first member the shape that forms.

In the motor of present embodiment, the end difference 931 of the first member 930 is identical with the end difference 31 of the first execution mode, is formed face 931a and formed face 931b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

The incised notch section 933 of in addition, playing the guide portion effect has vertically cuts away with the part of a side opposite with rotor-side (being in the present embodiment radial outside) of the circumferential end of the first member 930 shape that forms and be communicated with end difference 931.That is, incised notch section 933 both sides, the channel opening 15a of the section side opening to a side opposite with rotor-side (being radial outside in the present embodiment), on axially connects the circumferential end of the first member 930 vertically.Incised notch section 933 forms face 933a by incised notch section and 933b forms.Incised notch section forms face 933a towards the channel opening 15a of section side, and the incised notch formation face 933b of section is towards a side opposite with rotor-side (in the present embodiment, being radial outside).

In addition, with in winding insulation member insertion groove 15, preferably be set as Figure 19 and width A, width C shown in Figure 20 following such for easily.

At this, width A is that tooth leading section 14 is in the radial width at all forward end place.In addition, width C is at all forward end place of the circumferential end of the first member 930 and leans on the position of the axial end 10a side of stator core 10, a side opposite with rotor-side of tooth front end face 12a and the circumferential end of the first member 930 (in the present embodiment, be radial outside) face (in Figure 19, being that incised notch section forms face 933b) between radial width.And, be preferably set to and satisfy A≤C.More preferably be set as satisfied (thickness of A+ slot liner member 60)≤C.

In the present embodiment, move along the incised notch formation face 933b of section by kink 72a, the 72b that makes the first winding insulation member 70, can be easily with in the first winding insulation member 70 insertion grooves 15.In addition, not only from configuring a side of overhang insulation member 930, also can naked eyes see the insertion position of the first winding insulation member 70 in groove 15 from a side opposite with rotor-side (in the present embodiment, being radial outside).Thus, can be more easily with in the first winding insulation member 70 insertion grooves 15.In addition, because incised notch section 933 forms, a side opposite with rotor-side (in the present embodiment, being radial outside) of the circumferential end of the first member 930 cut away the shape that forms, so can be at a lot of stator winding 17 of the interior configuration of groove 15.

The motor of present embodiment can constitute: " guide portion has vertically and to connect ground the part of a side opposite with rotor-side of the circumferential end of the first member 932 is cut away the shape that forms, and forms face (incised notch section form face 933a and 933b) by the first and second guide portion and form; The first guide portion forms face 933a towards the opening 15a of groove side; The second guide portion forms face 933b towards a side opposite with rotor-side ".

Figure 21 illustrates the partial enlarged drawing of stator of the motor of the 11 execution mode.

In the motor of present embodiment, the end difference 1031 of the first member 1030 is identical with the end difference 31 of the first execution mode, is formed face 1031a and formed face 1031b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, play the incised notch section 1033 of guide portion effect to a side opposite with rotor-side (being in the present embodiment radial outside), the axial end 10a side of stator core 10, the channel opening 15a of section side opening, and the circumferential end of the first member 1030 is connected vertically.Incised notch section 1033 forms face 1033a by incised notch section and 1033b forms.Incised notch section forms face 1033a towards the channel opening 15a of section side, and the incised notch formation face 1033b of section is towards a side opposite with rotor-side (in the present embodiment, being radial outside).In the present embodiment, with circumferentially vertical cross section on when observing, incised notch section forms face 1033b and tilts, and this incised notch section forms the part of relatively opposite with the axial end 10a side of the part by axial end 10a one side of stator core 10 of face 1033b, is positioned at rotor one side (being radially inner side in the present embodiment).

In the present embodiment, move along the incised notch formation face 1033b of section by kink 72a, the 72b that makes the first winding insulation member 70, can be easily with in the first winding insulation member 70 insertion grooves 15.Especially, in the present embodiment, incised notch section forms the face 1033b part that forms relatively opposite with the axial end 10a side of stator core 10 side of the part by axial end 10a one side of stator core 10 of face 1033b for this incised notch section that tilts and is positioned at rotor one side, thereby can be more easily with in the first winding insulation member 70 insertion grooves 15.In addition, not only can from configuring a side of overhang insulation member, can also see from a side opposite with rotor-side (in the present embodiment, being radial outside) naked eyes the insertion position of the first winding insulation member 70 in groove 15.Thus, can be more reliably with in the first winding insulation member 70 insertion grooves 15.In addition, because incised notch section 1033 forms, the part of the side opposite with rotor-side (in the present embodiment, being radial outside) of the circumferential end of the first member 1030 is cut away the shape that forms, so can be at a lot of stator winding 17 of the interior configuration of groove 15.

The motor of present embodiment can constitute: " guide portion 1033 has vertically and to connect ground the part of a side opposite with rotor-side of the circumferential end of the first member 1030 is cut away the shape that forms, and forms face (incised notch section form face 1033a and 1033b) by the first and second guide portion and form; The first guide portion forms face 1033a towards the opening 15a of groove side; The second guide portion forms face 1033b towards a side opposite with rotor-side, and with circumferentially vertical cross section on when observing, this second guide portion forms face 1033b and tilts, and the part of the side that the part of axial end 10a one side of leaning on stator core 10 of this second guide portion formation face 1033b is relatively opposite with the axial end 10a side of stator core 10 is positioned at rotor one side ".

In addition, the incised notch section as the tenth and the 11 execution mode can be formed on a part vertically.In addition, also can use the incised notch section of above-mentioned shape.

Then, the second winding insulation member 80 is described.Figure 22 illustrates the second winding insulation member 80.Identical with the first winding insulation member 70 as the second winding insulation member 80, use the insulating component that has elasticity and form sheet (film-form).With axially vertical cross section on observe the second winding insulation member 80 and be linearity (comprising roughly linearity).

With reference to Figure 23～Figure 26, the action that the second winding insulation member 80 is inserted in the groove 15 of the stator core 10 of the overhang insulation member 20 of the first execution mode that disposes Fig. 1～shown in Figure 3 in axial both sides is described.In addition, Figure 23 is the stereogram with the action in the second winding insulation member 80 insertion grooves 15.In addition, Figure 24～Figure 26 means respectively the state before the interior insertion of groove 15 the second winding insulation member 80, the state that is inserting, the partial enlarged drawing of the state that inserted.

Will be with the second winding insulation member 80 insertion grooves 15 when interior, as shown in figure 24, circumferential end 81a, 81b be configured in the position of incised notch section 32.Then, under this state, the second winding insulation member 80 is moved vertically.At this moment, make the second winding insulation member 80 mobile along the incised notch section 32 of the first member 30 (the incised notch section that forms incised notch section 32 forms face 32a, 32b).

The second winding insulation member 80 can insertion groove insulating component 60 and is configured between stator winding 17 in groove 15, also can insertion groove insulating component 60 and tooth leading section 14 between.In the present embodiment, the second winding insulation member 80 insertion groove insulating components 60 and being configured between stator winding 17 in groove 15.

In the present embodiment, as mentioned above, slot liner member 60 is outstanding from the axial end 10a of stator core 10 in the axial direction, thereby, can be easily the axial end portion 82a of the second winding insulation member 80 be positioned between slot liner member 60 and stator winding 17.

If the second winding insulation member 80 is inserted in groove 15 (if the second winding insulation member 80 is by incised notch section 32), the end difference that locks at the formation end difference 31 of the first member 30 of the axial end portion 82a of the second winding insulation member 80 forms on face 31b.In addition, the second winding insulation member 80 length setting in the axial direction must be longer than the axial length of stator core 10, makes the axial end portion 82a of the second winding insulation member 80 outstanding from the axial end 10a of stator core 10 in the axial direction.

Figure 27 illustrates the second winding insulation member 80 partial sectional view of the state in insertion groove 15.

When the second winding insulation member 80 is inserted into groove 15 when interior, the second winding insulation member 80 be configured to the channel opening 15a of section in opposite directions.Thus, the channel opening 15a of section is stopped up by the second winding insulation member 80, thereby can preventing from being configured in stator winding 17 in groove 15, (in the present embodiment, to be radially inner side) from the channel opening 15a of section to rotor-side outstanding.

In the present embodiment, be provided with formation incised notch section 32 in the axial direction as guide portion in the circumferential end of the first member 30 of overhang insulation member 20.Thus, can be easily with in the second winding insulation member 80 insertion grooves 15.In the present embodiment, because have form with the circumferential end of the first member 30 by rotor-side (in the present embodiment, be radially inner side) part cut away the incised notch section 32 of the shape that forms, so not only by incised notch section 32 from configuring a side of overhang insulation member 20, but also can from rotor-side (in the present embodiment, being radially inner side) easily naked eyes see the insertion position of the second winding insulation member 80 in groove 15.

In addition, the circumferential end at the first member 30 of overhang insulation member 20 has along circumferentially leaning on the part of the axial end 10a side of stator core 10 to cut away the end difference of the shape that forms from the channel opening 15a of section side.Thus, because the axial end portion of the second winding insulation member 80 in insertion groove 15 locks on end difference, so can prevent that the second winding insulation member 80 from coming off in the axial direction.

In addition, the second winding insulation member 80 can be used as the winding insulation member of the motor of the second to the 11 execution mode.In this case, except the caused effect of shape difference because of the first winding insulation member 70 and the second winding insulation member 80, has above-mentioned effect.

In the first to the 11 execution mode, the incised notch section that the part by radially a side of the circumferential end of the first member of overhang insulation member (by the part of rotor-side or by the part of a side opposite with rotor-side) is cut away the shape that forms is as guide portion, also can will be formed on groove on the first member of overhang insulation member as guide portion.

Figure 28 illustrates and use groove as the partial sectional view of the stator of the 12 execution mode of guide portion.

In the motor of present embodiment, the end difference 1131 of the first member 1130 is identical with the end difference 31 of the first execution mode, is formed face 1131a and formed face 1131b towards the end difference of the axial end 10a of stator core 10 side by the end difference towards the channel opening 15a of section side to form.

In addition, both sides, the channel opening section 15a side opening of the groove 1134 that plays the guide portion effect on axially, and the circumferential end of the first member 1130 is connected vertically.Groove 1134 forms face 1134a, 1134b by groove and 1134c forms.Groove forms face 1134a towards a side opposite with rotor-side (in the present embodiment, being radial outside), and groove forms face 1134b towards rotor-side (in the present embodiment, being radially inner side), and groove forms face 1134c towards the channel opening 15a of section side.

In addition,, preferably Figure 28 and width A, width D shown in Figure 29 are set as following in winding insulation member (the first winding insulation member 70, the second winding insulation member 80) insertion groove 15 for easily.

At this, width A is the radial width at all forward end place of tooth leading section 14.In addition, width D is at all forward end place of the circumferential end of the first member 1130 and leans on the position of the axial end 10a side of stator core 10, in tooth front end face 12a and the face that forms groove 1134 by the radial width between the face 1134a of rotor-side (in the present embodiment, being radially inner side).And, be preferably set to and satisfy A≤D.More preferably be set as satisfied (thickness of A+ slot liner member 60)≤D.

In the situation that consist of like this, mobile along groove 1134 (groove that forms groove forms face 1134a, 1134b) by the circumferential end that makes the winding insulation member, can be with the thin and winding insulation member that is easy to bend with groove 1134 (groove forms face 1134a, 1134b) as guide portion easily in insertion groove 15, and, can easily the winding insulation member be positioned between slot liner member 60 and stator winding 17.

In the present embodiment, under state in the groove 1134 that will insert as kink 72a, the 72b (the circumferential end 81a of the second winding insulation member 80,81b) of the circumferential end of the first winding insulation member 70 the first member 1130, make the first winding insulation member 70 (the second winding insulation member 80) mobile along groove 1134 (groove that forms groove 1134 forms face 1134a, 134b).When the first winding insulation member 70 (the second winding insulation member 80) is inserted into groove 15 when interior (when circumferential end has been passed through groove 1134), the axial end portion 73a of the first winding insulation member 70 (the axial end portion 82a of the second winding insulation member 80) locks on end difference 1131 (end difference that forms end difference 1131 forms face 1131b) at the first member 1130.

In addition, will be with the first winding insulation member 70 insertion grooves 15 when interior, can make its strain shorten interval (closing the peristome of V word shape) between the circumferential both ends of the first winding insulation member 70.

With circumferentially vertical cross section on when observing, groove 1134 can with axially parallel (comprising almost parallel), also can be with respect to axioversion, for example, with circumferentially vertical cross section on when observing, the part that can tilt for relatively opposite with the axial end 10a of stator core 10 side of the part by the axial end 10a side of stator core 10 of this groove 1134 is positioned at a side opposite with rotor-side (being radial outside in the present embodiment).

The motor of present embodiment can constitute: " guide portion 1134 is formed in the groove that connects vertically on the circumferential end of the first member 1130, forms face (groove forms face 1134a, 1134b and 1134c) by first, second, and third guide portion and forms; The first guide portion forms face 1134a towards a side opposite with rotor-side; The second guide portion forms face 1134b towards rotor-side; The 3rd guide portion forms face 1134c towards the opening 15a of groove side, and is configured between the first guide portion formation face 1134a and the second guide portion formation face 1134b ".

In above-mentioned motor of the present invention, operation improving, in addition, can prevent defective insulation significantly.

In addition, each structure of above execution mode explanation is not limited to use in rotor can be supported on the interior rotatable motor of radially inner side of stator rotatably, also can use in rotor can be supported on the outward rotation type motor of radial outside of stator rotatably.

In the outward rotation type motor, tooth has: tooth root section, extend to radial outside from yoke; The tooth leading section is arranged on the leading section of tooth root section, along circumferentially extending, and is formed with the tooth front end face by rotor one side (in this case, being radial outside).With axially vertical cross section on when observing, the tooth front end face forms the circular shape centered by rotor center.In addition, rotor can be supported on the radial outside of stator rotatably in the mode that has the space between the inner peripheral surface of rotor and tooth front end face.In addition, in the outward rotation type motor, " rotor-side " corresponding to " radial outside ", " side opposite with rotor-side " is corresponding to " radially inner side ".

The invention is not restricted to the structure of execution mode explanation, can carry out various changes, increase, deletion.

For example, each structure of each execution mode explanation namely can be used separately, also can be used in combination a plurality of structures of suitable selection.

In addition, in the time of in will be with winding insulation member insertion groove, can shorten carrying out strain under the state of length at circumferential both ends and insert, also can insert with shape originally.

Be to be longer than stator core length in the axial direction, the length that also can be set as equal (comprising about equally) with slot liner member length setting in the axial direction.

In addition, the incised notch formation face 632b of section of the incised notch formation face 232c of section of the 3rd execution mode (Figure 12), the incised notch formation face 532b of section of the 6th execution mode (Figure 15), the 7th execution mode (Figure 16), the incised notch formation face 832c of section of the 9th execution mode (Figure 18), the incised notch formation face 1033b of section of the 11 execution mode (Figure 21), flat shape can be formed, curve form can also be formed.

In addition, use the end difference with the shape that radially connects, also can use the part with side that the footpath is made progress to cut away the end difference of the shape that forms.For example, use and have along circumferentially leaning on rotor-side (to be radially inner side in interior rotatable motor, in the outward rotation type motor for radial outside) part or cut away the end difference of the shape that forms by the part of a side opposite with rotor-side (be radial outside at interior rotatable motor, be radially inner side in the outward rotation type motor).

In addition, the overhang insulation member is not limited to the structure of execution mode explanation.

Claims (18)

1. a motor, have stator and rotor, it is characterized in that,

Described stator has stator core, slot liner member, stator winding, winding insulation member and overhang insulation member;

With axially vertical cross section on when observing, described stator core has:

Yoke, along circumferentially extension,

A plurality of teeth have respectively tooth root section and tooth leading section, and described tooth root section radially extends from described yoke, described tooth leading section is arranged on the front of described tooth root section, and along circumferentially extension, and be formed with the tooth front end face in a side opposite with the yoke side of described tooth leading section

Groove, by forming at two the adjacent teeth that make progress in week in described yoke and described a plurality of tooth, between the tooth leading section of described two teeth by opening;

Have the space between described rotor and described tooth front end face, and be supported for and rotate;

Described stator winding is configured in described groove across described slot liner member;

Described winding insulation member is clamped in the stator winding and the described groove of the insertion of the state between described tooth that is disposed in described groove with the circumferential both ends of this winding insulation member, and stops up at least the opening of described groove;

Described overhang insulation member is arranged on the axial both sides of described stator core;

Each described overhang insulation member has respectively:

The first member is configured in the tooth leading section position in opposite directions with described tooth, and along circumferentially extending,

Second component is configured in and described yoke position in opposite directions,

Connecting elements is configured in the tooth root section position in opposite directions with described tooth, is used for connecting described the first member and described second component;

In addition, the circumferential both ends of described first member of at least one the overhang insulation member in described overhang insulation member are provided with:

End difference forms along circumferentially cutting away with the axial end part in opposite directions of described stator core from the open side of described groove,

Guide portion forms vertically with described end difference and is communicated with;

Described guide portion is incised notch section, described incised notch section cuts away the part by in the part of radially inner side at the circumferential both ends of described the first member vertically and forms, described incised notch section is to the axial end side of radially inner side, described stator core and channel opening section side opening, described incised notch section is formed on the part vertically of circumferential end of described the first member

Described winding insulation member inserts in described groove under the guiding of the guide portion of described the first member, and is fixed in described groove by the end difference of described the first member.

2. motor as claimed in claim 1, it is characterized in that, be made as A in the radial width with all forward end place of described tooth leading section, will be at all forward end place of the circumferential end of described the first member and by the position of the axial end side of described stator core, the radial width by between the face of rotor-side of the circumferential end of described tooth front end face and described the first member is made as in the situation of B, satisfies A≤B.

3. motor as claimed in claim 1 or 2, is characterized in that, described slot liner member is outstanding from the axial end of described stator core.

4. motor as claimed in claim 1 or 2, is characterized in that, with axially vertical cross section on when observing, described winding insulation member is bent into V word shape, and inserts in described groove with the peristome of V word shape and the opening mode in opposite directions of described groove.

5. motor as claimed in claim 3, is characterized in that, with axially vertical cross section on when observing, described winding insulation member is bent into V word shape, and inserts in described groove with the peristome of V word shape and the opening mode in opposite directions of described groove.

6. motor as claimed in claim 4, is characterized in that, with axially vertical cross section on when observing, the circumferential both ends of described winding insulation member are to a lateral buckling opposite with the peristome side of V word shape.

7. motor as claimed in claim 5, is characterized in that, with axially vertical cross section on when observing, the circumferential both ends of described winding insulation member are to a lateral buckling opposite with the peristome side of V word shape.

8. motor as claimed in claim 1 or 2, is characterized in that, with axially vertical cross section on when observing, described winding insulation member forms linearity.

9. motor as claimed in claim 3, is characterized in that, with axially vertical cross section on when observing, described winding insulation member forms linearity.

10. a motor, have stator and rotor, it is characterized in that,

Described stator has stator core, slot liner member, stator winding, winding insulation member and overhang insulation member;

With axially vertical cross section on when observing, described stator core has:

Yoke, along circumferentially extension,

A plurality of teeth have respectively tooth root section and tooth leading section, and described tooth root section radially extends from described yoke, described tooth leading section is arranged on the front of described tooth root section, and along circumferentially extension, and be formed with the tooth front end face in a side opposite with the yoke side of described tooth leading section

Groove, by forming at two the adjacent teeth that make progress in week in described yoke and described a plurality of tooth, between the tooth leading section of described two teeth by opening;

Have the space between described rotor and described tooth front end face, and be supported for and rotate;

Described stator winding is configured in described groove across described slot liner member;

Described winding insulation member is clamped in the stator winding and the described groove of the insertion of the state between described tooth that is disposed in described groove with the circumferential both ends of this winding insulation member, and stops up at least the opening of described groove;

Described overhang insulation member is arranged on the axial both sides of described stator core;

Each described overhang insulation member has respectively:

The first member is configured in the tooth leading section position in opposite directions with described tooth, and along circumferentially extending,

Second component is configured in and described yoke position in opposite directions,

Connecting elements is configured in the tooth root section position in opposite directions with described tooth, is used for connecting described the first member and described second component;

In addition, the circumferential both ends of described first member of at least one the overhang insulation member in described overhang insulation member are provided with:

End difference forms along circumferentially cutting away with the axial end part in opposite directions of described stator core from the open side of described groove,

Guide portion forms vertically with described end difference and is communicated with;

Described guide portion is incised notch section, described incised notch section cuts away the part by radially inner side at the circumferential both ends of described the first member vertically and forms, described incised notch section is to the axial end side of radially inner side, described stator core and channel opening section side opening, described incised notch section connects vertically in the circumferential end of described the first member

Described winding insulation member inserts in described groove under the guiding of the guide portion of described the first member, and is fixed in described groove by the end difference of described the first member.

11. motor as claimed in claim 10, it is characterized in that, be made as A in the radial width with all forward end place of described tooth leading section, will be at all forward end place of the circumferential end of described the first member and by the position of the axial end side of described stator core, the radial width by between the face of rotor-side of the circumferential end of described tooth front end face and described the first member is made as in the situation of B, satisfies A≤B.

12. motor as described in claim 10 or 11 is characterized in that, described slot liner member is outstanding from the axial end of described stator core.

13. motor as described in claim 10 or 11 is characterized in that, with axially vertical cross section on when observing, described winding insulation member is bent into V word shape, and inserts in described groove with the peristome of V word shape and the opening mode in opposite directions of described groove.

14. motor as claimed in claim 12 is characterized in that, with axially vertical cross section on when observing, described winding insulation member is bent into V word shape, and inserts in described groove with the peristome of V word shape and the opening mode in opposite directions of described groove.

15. motor as claimed in claim 13 is characterized in that, with axially vertical cross section on when observing, the circumferential both ends of described winding insulation member are to a lateral buckling opposite with the peristome side of V word shape.

16. motor as claimed in claim 14 is characterized in that, with axially vertical cross section on when observing, the circumferential both ends of described winding insulation member are to a lateral buckling opposite with the peristome side of V word shape.

17. motor as described in claim 10 or 11 is characterized in that, with axially vertical cross section on when observing, described winding insulation member forms linearity.

18. motor as claimed in claim 12 is characterized in that, with axially vertical cross section on when observing, described winding insulation member forms linearity.

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