DE102014105280A1 - Stator, rotor and rotating electrical machine - Google Patents

Abstract

A stator (40A) for a rotating electrical machine (10A) has a stator core (41A) and a stator coil (42) wound on the stator core. The stator core has one or more protrusions (413) formed therein. The stator core is fixed to a support shaft (70A) of the rotary electric machine with the one or more protrusions clamped in one or more slots (711) formed in the support shaft. With such a configuration, when the rotating electrical machine is subjected to vibration for a long period of time, it is possible to suppress wear of the stator core and the support shaft due to friction therebetween. In addition, when the support shaft is made of an electrically conductive material, the stator core will be electrically connected to the support shaft, thereby suppressing a variation in electric potential in the stator core caused by deterioration of the stator core.

Description

BACKGROUND

1. Technical area

The present invention relates to stators for rotating electric machines, rotors for rotating electric machines, and rotating electric machines having a stator and a rotor used in, for example, motor vehicles as electric motors and electric generators.

2. Description of the Related Art

It is for example in the Japanese Unexamined Patent Application Publication No. 2012-249404 discloses a method of grounding a stator of a rotary electric machine without interfering with the attachment of the stator to a housing (or frame) of the rotary electric machine.

Specifically, according to the method, the stator has a stator core formed by laminating a plurality of magnetic steel sheets and having a plurality of mounting portions formed to protrude from an outer periphery of the stator core. Each of the attachment portions has an electrically conductive pin press-fitted therebetween and an inner peripheral wall of the housing, whereby it is electrically connected to the housing. In each of the attachment portions, a through hole is also formed through which a bolt extends to fix (attach) the stator core to the housing.

However, with the foregoing method, when the rotary electric machine is subjected to vibration for a long period of time, the bolts that fix the stator core to the case and the pins that electrically connect the stator core to the case may become loose. Consequently, when the bolts and the pins are loosened, the grounding of the stator becomes insufficient, causing various undesirable effects such as generation of electromagnetic noise in the stator core, leakage of high voltage, and thus stop operation of the rotating one electric machine.

To avoid the foregoing undesirable effects, one may consider increasing the fastening force of the bolts and the press-fitting force of the pins. However, with the increase in the fastening force and the press-fitting force, the stator core and the housing may be deformed. In addition, replacing the stator core and housing with new ones can make it difficult to detach the stator core and the housing from each other.

SHORT VERSION

According to the present invention, a stator for a rotary electric machine is provided. The stator has a stator core and a stator coil wound on the stator core. The stator core is configured to be fixed to a base member in the rotary electric machine, wherein at least one projection is clamped in at least one slot. The at least one protrusion is formed in one of the stator core and the base member, and the at least one slit is formed in the other of either the stator core or the base member.

Consequently, when the at least one protrusion is clamped in the at least one slot, when the rotary electric machine is subjected to vibration for a long period of time, it is possible to suppress wear of the stator core and the base member due to friction therebetween. In addition, when the base member is made of an electrically conductive material, the stator core will be electrically connected to the base member, thereby suppressing variation of electric potential in the stator core caused by age deterioration of the stator core.

According to the present invention, there is further provided a rotor for a rotary electric machine. The rotor has a rotor core and a plurality of magnets provided in the rotor core. The rotor core is configured to be fixed to a base member in the rotary electric machine, wherein at least one projection is clamped in at least one slot. The at least one projection is formed in either the rotor core or the base member, and the at least one slot is formed in the other of either the rotor core or the base member.

Consequently, when the at least one protrusion is clamped in the at least one slot, when the rotary electric machine is subjected to vibration for a long period of time, it is possible to suppress wear of the rotor core and the base member due to friction therebetween. In addition, when the base member is made of an electrically conductive material, the rotor core will be electrically connected to the base member, thereby suppressing variation of electric potential in the rotor core caused by age deterioration of the rotor core.

According to the present invention there is further provided a rotary electric machine having either or both the stator and the rotor described above according to the present invention. The base member further has a connection portion configured to be electrically connected to an external member and thereby grounded.

With the foregoing configuration, it is possible to ground the stator core and / or the rotor core of the rotary electric machine by electrically connecting the connecting portion of the base member with the external member. It is thus possible to suppress a variation of an electric potential in the stator core and / or the rotor core, thereby preventing electromagnetic noise from being generated in the stator core and / or the rotor core due to the variation of an electric potential. As a result, it is possible to prevent other components of the rotary electric machine and other electric devices located in the vicinity of the rotary electric machine from being caused by electromagnetic noise generated in the stator core and / or the rotor core, be affected.

The "rotating electric machine" may additionally include any electric machine having at least one rotating part (for example, a rotating shaft), such as an electric generator, an electric motor and a motor generator, selectively as either an electric generator or as a electric motor can be. The "base member" may be any member, such as a shaft or a frame of the rotary electric machine, provided that the stator core or the rotor core can be fixed to the member. The term "clamped" indicates that two limbs are caught together and thereby prevented from being disengaged from each other. The term "clamped" includes, but is not limited to, "hooked," "fitted," and "interlocked." The "external member" may be any device, article or material that is located outside of the rotating electrical machine, provided that it is the same or the same can hold the electrical potential of the same or the same at an electrical reference potential , which is equal to 0 V, but not limited thereto. Accordingly, the term "grounded" indicates that the electrical potential of a component, such as the base member, is made substantially equal to the electrical reference potential of the external member. The meaning of "substantially equal to the electrical reference potential" further includes both "exactly equal to the electrical reference potential" and "varying around the electrical reference potential within an allowable range".

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be more fully understood from the detailed description given below and from the accompanying drawings of exemplary embodiments, which should not be construed as limiting the invention to specific embodiments, but for purposes of illustration and understanding only to understand.

Show it:

1 a schematic cross-sectional view of a rotating electrical machine according to a first embodiment;

2 12 is a schematic view illustrating a first example of clamping a stator core to a shaft main body in the rotary electric machine according to the first embodiment;

3 12 is a schematic view illustrating a second example of clamping the stator core to the shaft main body in the rotary electric machine according to the first embodiment;

4 a schematic view illustrating a first example of clamping a rotor core to a frame in the rotary electric machine according to the first embodiment;

5 a schematic view illustrating a second example of clamping the rotor core to the frame in the rotary electric machine according to the first embodiment;

6 a schematic cross-sectional view of a rotating electrical machine according to a second embodiment;

7 12 is a schematic view illustrating a first example of clamping a rotor core to a shaft main body in the rotary electric machine according to the second embodiment;

8th 12 is a schematic view illustrating a second example of clamping the rotor core to the shaft main body in the rotary electric machine according to the second embodiment;

9 12 is a schematic view illustrating a first example of clamping a stator core to a frame in the rotary electric machine according to the second embodiment;

10 a schematic view illustrating a second example of a clamping of the stator core to the frame in the rotary electric machine according to the second embodiment;

11 a schematic view illustrating the grounding of a rotating electrical machine in a motor vehicle according to a third embodiment;

12 12 is a schematic view illustrating a modification of the first example of clamping the stator core to the shaft main body in the rotary electric machine according to the first embodiment; and

13 12 is a schematic view illustrating another modification of the first example of clamping the stator core to the shaft main body in the rotary electric machine according to the first embodiment.

DESCRIPTION OF EMBODIMENTS

Exemplary embodiments and their modifications are described below with reference to FIG 1 - 13 described.

It should be noted that clarity and ease of understanding of identical components having identical functions throughout the description are marked, where possible, with the same reference numerals in each of the figures, and avoiding redundancy for explanations of identical components are not repeated.

In addition, it should be further noted that in the following description, "connected" and "connecting" indicate "electrically connected" and "electrically connecting", respectively, unless specifically specified otherwise; and each of the figures represents only those components necessary to explain the present invention.

[First Embodiment]

In this embodiment, a rotary electric machine 10 according to the present invention as a rotary electric machine 10A of a type having an outer rotor; a rotor 20 according to the present invention is as a rotor 20A the rotating electric machine 10A a type with an outer rotor executed; a stator 40 according to the present invention is as a stator 40A the rotating electric machine 10A of a type having an outer rotor. For consistency, in addition, a part of the remaining components of the rotating electrical machine 10A of a type having an outer rotor respectively denoted by respective reference numerals with a suffix "A".

As in 1 is shown in the present embodiment, the rotating electric machine 10A a type with an outer rotor the rotor 20A , a warehouse 30 , the stator 40A and a carrier wave 70A on.

The rotor 20A has a frame 21 , a rotor core 22 and a plurality of magnets 23 on.

The frame 21 is on the outer peripheral side of the stator 40A arranged. The frame 21 may be considered as a base member to which the rotor core 22 is fixed.

The frame 21 may be made of any suitable material in any suitable form. The frame 21 For example, it may be made of a shielding material for shielding electromagnetic noise such as a metal sheet, a metal mesh, a foam metal or an electrically conductive resin. In this case, it is also preferable that the frame 21 is made of a shielding material that is difficult to magnetize, such as a plate of amorphous steel. The frame 21 Alternatively, it may be made of a non-magnetic material such as an electrically insulating resin or a non-magnetic metal (for example, aluminum, copper, zinc, austenitic stainless steel).

In the present embodiment, the frame 21 substantially cup-shaped, about a central portion for transmitting power (or torque) to the outside of the rotary electric machine 10A and a peripheral portion for fixing the rotor core 22 and the permanent magnets 23 exhibit. Each of the central and peripheral sections of the frame 21 can be additionally formed by bending.

The rotor core 22 can have any suitable configuration. The rotor core 22 For example, it may be configured with a laminate, a one-piece body, or a plurality of rotor core segments. In the present Embodiment is the rotor core 22 formed by laminating a plurality of magnetic steel sheets. It should be noted, however, that the rotor core 22 may alternatively be formed by molding, grinding or assembling a plurality of rotor core segments. The rotor core 22 can be either directly on an inner periphery of the peripheral portion of the frame 21 or on a pedestal (not shown) attached to the inner periphery of the peripheral portion of the frame 21 is formed, be fixed.

The magnets 23 can work in the same way as the rotor core 22 be fixed or with bezels (not shown) in the rotor core 22 are formed, crushed. The magnets 23 alternatively, by forming a plurality of voids in the rotor core 22 and respectively inserting (including press-fitting) the magnets 23 be fixed in the voids. In the case of a benefit of another means for fixing the magnets 23 in addition, as the squeezing and inserting, it is required that the fixing means is capable of the magnets 23 regardless of the number of revolutions of the rotor 20A and external forces generated during a rotation of the rotor 20A to the rotor 20A be created, firmly to fix.

In the present embodiment, the magnets are 23 by permanent magnets, which may be of a suitable type. The permanent magnets may be, for example, ferrite magnets, alnico magnets, samarium cobalt magnets, neodymium iron boron magnets or samarium iron nitride magnets. It is particularly preferable to use ferrite magnets because the ferrite magnets have high coercive force and are difficult to demagnetize and difficult to rust. The magnets 23 may additionally be alternatively implemented by electromagnets.

The warehouse 30 is between the rotor 20A and the carrier wave 70A arranged. The warehouse 30 has bearing elements and a lubricant, all of which are preferably electrically conductive, on. More specifically, the electrically conductive supporting elements may be made of an electrically conductive metal such as copper or iron. The electrically conductive lubricant may have an electrically conductive substance mixed therewith. over the camp 30 is the rotor 20A through the carrier shaft 70A rotatably supported.

The stator 40A has a stator core 41 and a stature coil 42 on. The stator core 41 has a plurality of grooves (not shown) formed therein. The stator coil 42 is on the stator core 41 wrapped around in the slots of the stator core 41 partially included.

The stator core 41 is made of a magnetic material. The stator core 41 More specifically, it may be made of a hard magnetic material (that is, a magnetic material having a relatively high coercive force), such as a magnet. The stator core 41 Alternatively, it may be made of a soft magnetic material (that is, a magnetic material having a relatively low coercive force) such as iron, silicon steel, permalloy, sendust, permendur, soft ferrite, an amorphous magnetic alloy, or a nanocrystalline magnetic alloy.

The stator core 41 can also have any suitable configuration. The stator core 41 For example, it may be configured with a laminate, a one-piece body, or a plurality of stator core segments. In the present embodiment, the stator core 41 formed by laminating a plurality of magnetic steel sheets.

The stator core 41 is at the carrier shaft 70A fixed. The stator core 41 more precisely, via a fixing device F1, as in 1 is shown on the carrier shaft 70A be fixed. The fixing device F1 can be implemented by at least one of a fastening device (for example, bolts or screws), a joining device (for example, soldering or welding), and a binding device (for example, an adhesive). In addition, in the case of the fixing device F1 made of an electrically conductive material, the fixing device F1 additionally functions as a means for electrically connecting all the magnetic steel sheets of the stator core 41 , The stator core 41 Alternatively, by press-fitting the carrier shaft 70A into a through hole in the stator core 41 is formed on the carrier shaft 70A be fixed.

The carrier wave 70A is a non-rotating shaft made of an electrically conductive material. The carrier wave 70A may be considered as a base member to which the stator core 41 is fixed. In the present embodiment, the carrier shaft 70A configured to a shaft main body 71 and at least one flange portion 72 for firmly fixing the stator core 41 on the shaft main body 71 exhibit. The carrier wave 70A more precisely, on one side of the stator core 41 only a flange section 72 as it is by a solid line in 1 is shown, or on opposite sides of the stator core 41 a pair of flange sections 72 as it is through the solid line and a two-dot-and-dash line in 1 is shown. As in 1 In addition, the stator core can also be shown 41 and the flange portion (s) 72 the carrier wave 70A Have through-holes formed therein so that the stator core 41 by bolts (that is, the fixing device F1) inserted in the through holes on the carrier shaft 70A can be fixed.

The carrier wave 70A In addition, it may be further configured not to have a flange portion. In this case, the stator core 41 by press-fitting the carrier shaft 70A into a through hole in the stator core 41 or by forming a wedge in either the stator core 41 or the carrier wave 70A and a keyway in the other thereof, and then fitting the key into the keyway (see, for example, FIG JIS B1301-B1303 ) on the carrier shaft 70A be fixed.

The carrier wave 70A is with an external link 80 connected and thereby grounded. The external link 80 can be any device, some article, or any material that is outside of the rotating electrical machine 10A provided that the same, the same or the same, can maintain the electrical potential of the same or the same on an electrical reference target, which may be equal to 0 V, but is not limited thereto.

The carrier wave 70A can also have a connection section 50A at the one end of the same on the to the camp 30 opposite side (that is, the lower end in 1 ) have formed. The connecting section 50A can by a metal member (for example, a bolt or a pin) attached to the carrier shaft 70A in the axial direction AX of the carrier shaft 70A moored, or a connection, by, for example, welding or soldering to the end of the carrier shaft 70A is inserted, be implemented. In this case, the carrier wave 70A by connecting the connection section 50A with the external link 80 over an electric wire 60 grounded.

The carrier wave 70A may alternatively have no connection portion formed therein. In this case, the carrier wave 70A be grounded by connecting it directly to the external member 80 connected is.

After the overall configuration of the rotating electric machine 10a According to the present embodiment, the manner of clamping two components to each other in the rotary electric machine is described 10A with reference to 2 - 5 described.

2 illustrates a first example of clamping the stator core 41A on the shaft main body 71 the carrier wave 70A at the rotating electric machine 10A represents.

As in 2 shown in this example has the stator core 41A one or more projections 413 formed on the inner peripheral surface thereof to be in a direction to the shaft main body 71 the carrier wave 70A (ie in the transverse direction DC or the right direction in 2 ) to project.

The stator core 41A is from the magnetic steel sheets 411 , which are in the axial direction AX of the carrier shaft 70A layered, formed. The magnetic steel sheets 411 may be formed to have either a planar shape or a non-planar shape (for example, a curved or concavo-convex shape).

In this example also has a part (at least one) of the magnetic steel sheets 411 in the transverse direction DC a different length than the other magnetic steel sheets 411 ,

Some of the magnetic steel sheets 411 also each have a bevel 412 at the end on the side of the shaft main body 71 the same is formed while none of the remaining magnetic steel sheets 411 at the ends on the side of the shaft main body 71 the same has a bevel. It should be noted that all magnetic steel sheets 411 one bevel each 412 at the end on the side of the shaft main body 71 is formed, or no chamfer, which at the end on the side of the shaft main body 71 the same is formed.

The projections 413 of the stator core 41A In addition, by adjusting different lengths of the magnetic steel sheets 411 in the transverse direction DC or by an offset of some of the magnetic steel sheets 411 in the transverse direction DC during the process of laminating the magnetic sheets 411 be formed.

The wave main body 71 the carrier wave 70A on the other hand has one or more slots 711 , which in the transverse direction DC, which is the axial direction AX of the carrier shaft 70A are formed in the outer peripheral surface thereof. It should be noted that the transverse direction DC has a direction perpendicular to the axial direction AX, but is not limited thereto.

The slots 711 Can be used in any form, for clamping the protrusions 413 of the stator core 41A is suitable to be formed. The slots 711 for example, each in one concave groove, as is in 2 is shown to be formed. The slots 711 Alternatively, each may be formed into a linear section or a step.

Further, in this example, the thickness T1 of the magnetic steel sheets is 411 that the stator core 41A as greater than or equal to the width W1 of the slots 711 in the shaft main body 71 the carrier wave 70A are established (ie T1 ≥ W1). In the case where T1 is larger than W1, in addition, the projections 413 of the stator core 41A in the slots 711 Pressed to be in the slots 711 to be clamped.

3 illustrates a second example of clamping the stator core 41A on the shaft main body 71 the carrier wave 70A at the rotating electric machine 10A represents.

As in 3 shown in this example has the stator core 41A one or more slots 414 formed in the inner circumferential surface thereof in a direction away from the shaft main body 71 the carrier wave 70A (that is, the transverse direction DC or the left direction in FIG 3 ) to be absorbed.

A part (at least one) of the magnetic steel sheets 411 may also have a different length in the transverse direction DC than the other magnetic steel sheets 411 to have.

Some of the magnetic steel sheets 411 also each have a bevel 412 respectively at the end on the side of the shaft main body 71 is formed of the same, wherein none of the remaining magnetic steel sheets 411 has a chamfer at the end on the side of the shaft main body 71 is formed of the same. With the bevels 412 from some of the magnetic steel sheets 411 are therefore the slots 414 in the stator core 41A educated.

It should be noted that the slots 414 further in another way, for example by forming depressions, grooves or cuts in the inner circumferential surface of the stator core 41A according to the method of laminating the magnetic steel sheets 411 , can be formed.

The wave main body 71 the carrier wave 70A on the other hand has one or more projections 713 formed on the outer peripheral surface thereof to project DC in the transverse direction. The projections 713 may be formed in any suitable shape, provided that the projections 713 in the slots 414 of the stator core 41A can be clamped.

Further, in this example, the thickness T2 of the magnetic steel sheets is 411 that the stator core 41A form as greater than or equal to the size W2 of the intervals between the protrusions 713 (or the width W2 of the slots between the protrusions 713 are formed) of the shaft main body 71 set (that is, T2 ≥ W2). In addition, in the case where T2 is larger than W2, extreme ends of the magnetic steel sheets may become 411 be pressed into the slots between the protrusions 713 of the wave main body 71 are formed, whereby the projections 713 in the slots 414 of the stator core 41A be clamped.

Further, although not shown in the drawings, it is possible to use the foregoing first and second examples of clamping the stator core 41A on the shaft main body 71 the carrier wave 70A to combine. The stator core 41A may be more specifically modified to one or more protrusions 413 as well as one or more slots 414 to have; the wave main body 71 can be modified to one or more slots 711 and one or more projections 713 to have. In this case, it is therefore possible, the projections 413 of the stator core 41A in the slots 711 of the wave main body 71 clamp while the protrusions 713 of the wave main body 71 in the slots 414 of the stator core 41A be clamped.

4 illustrates a first example of clamping the rotor core 22A on the frame 21A at the rotating electric machine 10A represents.

As in 4 is shown in this example has the rotor core 22A one or more projections 223 formed on the outer peripheral surface thereof in a direction toward the frame 21A (ie the legal direction in 4 ) to project.

The rotor core 22A is from the magnetic steel sheets 221 in the top-down direction in 4 layered, formed. The magnetic steel sheets 221 may be formed to have either a planar shape or a non-planar shape (for example, a curved or a concavo-convex shape).

In this example also has a part (at least one) of the magnetic steel sheets 221 in the direction to the frame 21A a different length than the other magnetic steel sheets 221 ,

Some of the magnetic steel sheets 221 also each have a bevel 222 at the end on the side of the frame 21A is formed of the same, none of the remaining magnetic steel sheets 221 has a bevel at the end on the side of the frame 21A is formed of the same. It should be noted that all magnetic steel sheets 221 one bevel each 221 can have that at the end on the side of the frame 21A the same is formed, or each may have no bevel, which at the end on the side of the frame 21A is formed of the same.

The projections 223 of the rotor core 22A In addition, by adjusting different lengths of the magnetic steel sheets 221 in the direction to the frame 21A or by an offset of some of the magnetic steel sheets 221 in the direction to the frame 21A during the process of laminating the magnetic sheets 221 be formed.

The frame 21A on the other hand has one or more slots 711 which in the inner peripheral surface in the left-right direction in 4 are formed. It should be noted that the left-right direction in 4 the axial direction AX of the carrier shaft 70A and has a direction that is perpendicular to the axial direction AX, but is not limited thereto.

The slots 211 can be in any suitable form, used to clamp the protrusions 223 of the rotor core 22A is suitable to be formed. The slots 211 For example, each in a concave groove, as in 4 is shown to be formed. The slots 211 Alternatively, each may be formed into a linear section or a step.

Further, in this example, the thickness T3 of the magnetic steel sheets is 221 that the rotor core 22A form as greater than or equal to the width W3 of the slots 211 that in the frame 21A are formed (that is, T3 ≥ W3). In addition, in the case where T3 is larger than W3, the protrusions of the rotor core may be used 22A in the slots 211 be press fitted, causing them in the slots 211 be clamped.

5 illustrates a second example of clamping the rotor core 22A on the frame 21A at the rotating electric machine 10A represents.

As in 5 is shown in this example has the rotor core 22A one or more slots 224 formed in the outer peripheral surface thereof in a direction away from the frame 21A (that is the left direction in 5 ) to be absorbed.

A part (at least one) of the magnetic steel sheets 221 also has in the direction away from the frame 21A a different length than the other magnetic steel sheets 221 ,

Some of the magnetic steel sheets 221 also each have a bevel 222 at the end on the side of the frame 21A is formed of the same, wherein none of the remaining magnetic steel sheets 221 has a bevel at the end on the side of the frame 21A is formed of the same. With the bevels 222 from some of the magnetic steel sheets 221 are therefore the slots 225 in the rotor core 22A educated.

It should be noted that the slots 224 in another way, for example, by forming depressions, grooves or cuts in the outer circumferential surface of the rotor core 22A according to the method of laminating the magnetic steel sheets 221 can be formed.

The frame 21A on the other hand has one or more projections 213 formed on the inner peripheral surface thereof in a direction toward the rotor core 22A (that is the left direction in 5 ) to project. The projections 213 may be formed in any suitable shape, provided that the projections 213 in the slots 224 of the rotor core 22A can be clamped.

Further, in this example, the thickness T4 of the magnetic steel sheets is 221 that the rotor core 22A form as greater than or equal to the size W4 of the intervals between the protrusions 213 (or the width W4 of slots between the protrusions 213 are formed) of the frame 21A is set (that is, T4 ≥ W4). In addition, in the case that T4 is larger than W4, extreme ends of the magnetic steel sheets may become 221 in the slots between the protrusions 213 of the frame 21A are formed, press-fitted, causing the protrusions 213 in the slots 224 of the rotor core 22A are clamped.

Further, although not shown in the drawings, it is possible to use the foregoing first and second examples of clamping the rotor core 22A on the frame 21A to combine. The rotor core 22A may be more specifically modified to one or more protrusions 223 as well as one or more slots 224 to have; the frame 21A can be modified to one or more slots 211 and one or more projections 213 to have. In this case, it is therefore possible, the projections 223 of the rotor core 22A in the slots 211 of the frame 21A clamp while the protrusions 213 of the frame 21A in the slots 224 of the rotor core 22A be clamped.

• (1) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41A entweder mit einem oder mehreren Vorsprüngen 413 des Statorkerns 41A, die in dem einen oder den mehreren Schlitzen 711 des Wellenhauptkörpers 71 der Trägerwelle 70A (siehe 2) festgeklemmt sind, oder mit dem einen oder den mehreren Vorsprüngen 713 des Wellenhauptkörpers 71 der Trägerwelle 70A, die in dem einen oder den mehreren Schlitzen 414 des Statorkerns 41A (siehe 3) festgeklemmt sind, an der Trägerwelle 70A fixiert.

According to the present embodiment, it is possible to achieve at least the following advantageous effects.

• (1) In the present embodiment, the stator core is 41A either with one or more protrusions 413 of the stator core 41A that in the one or more slots 711 of the wave main body 71 the carrier wave 70A (please refer 2 ), or with the one or more protrusions 713 of the wave main body 71 the carrier wave 70A that in the one or more slots 414 of the stator core 41A (please refer 3 ) are clamped to the carrier shaft 70A fixed.

• (2) Bei dem vorliegenden Ausführungsbeispiel sind der eine oder die mehreren Schlitze 711 in dem Wellenhauptkörper 71 der Trägerwelle 70A in der Querrichtung DC, die die axiale Richtung AX der Trägerwelle 70A schneidet (siehe 2), gebildet; der eine oder die mehreren Schlitze 414 sind alternativ in dem Statorkern 41A in der Querrichtung DC (siehe 3) gebildet.

If thus the rotating electric machine 10A is subjected to vibration for a long period of time, it is possible wear of the stator core 41A and the carrier wave 70A due to friction between them. In addition, if the carrier wave 70A is made of an electrically conductive material, the stator core 41A with the carrier shaft 70A be electrically connected, whereby a variation of an electric potential in the stator core 41A is suppressed, due to aging deterioration of the stator core 41A is caused. As a result, it is possible regardless of whether the frame 21A made of a shielding material to ensure low noise performance.

• (2) In the present embodiment, the one or more slots are 711 in the wave main body 71 the carrier wave 70A in the transverse direction DC, which is the axial direction AX of the carrier shaft 70A cuts (see 2 ), educated; the one or more slots 414 are alternatively in the stator core 41A in the transverse direction DC (see 3 ) educated.

• (3) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41A aus den magnetischen Stahlblechen 411, die in der axialen Richtung AX der Trägerwelle 70A geschichtet sind, gebildet. Alle magnetischen Stahlbleche 411 sind außerdem durch die Fixierungseinrichtung F1 (siehe 1) elektrisch verbunden.

With the foregoing formation, the one or more projections become 413 of the stator core 41A in the one or more slots 711 of the wave main body 71 clamped in the transverse direction DC; the one or more protrusions 713 of the wave main body 71 are alternatively in the one or more slots of the stator core 41A clamped in the transverse direction DC. It becomes possible, therefore, wear of the stator core 41A and the carrier wave 70A due to a vibration generated in the axial direction AX to effectively suppress.

• (3) In the present embodiment, the stator core is 41A from the magnetic steel sheets 411 , which are in the axial direction AX of the carrier shaft 70A layered, formed. All magnetic steel sheets 411 are also by the fixing device F1 (see 1 ) electrically connected.

• (4) Bei dem vorliegenden Ausführungsbeispiel haben einige der magnetischen Stahlbleche 411 jeweils die Abschrägung 412, die an dem Ende auf der Seite des Wellenhauptkörpers 71 derselben gebildet ist.

With the previous configuration, all magnetic steel sheets can 411 be kept at the same electric potential, whereby a variation of an electric potential in the stator core 41A is suppressed.

• (4) In the present embodiment, some of the magnetic steel sheets have 411 each bevel 412 at the end on the side of the shaft main body 71 is formed of the same.

• (5) Bei dem vorliegenden Ausführungsbeispiel ist die Dicke T1 der magnetischen Stahlbleche 411 als größer als oder gleich der Breite W1 der Schlitze 711 des Wellenhauptkörpers 71 eingestellt (siehe 2).

With the bevels 412 Thus, the one or more protrusions may 413 of the stator core 41A in the one or more slots 711 of the wave main body 71 be clamped without further ado; the one or more protrusions 713 of the wave main body 71 alternatively, in the one or more slots 414 of the stator core 41A be clamped without further ado.

• (5) In the present embodiment, the thickness T1 is the magnetic steel sheets 411 as greater than or equal to the width W1 of the slots 711 of the wave main body 71 set (see 2 ).

• (6) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41A an der Trägerwelle 70A fixiert. Eine Wärme, die durch den Stator 40A während eines Betriebs erzeugt wird, kann folglich über die Trägerwelle 70A abgeleitet werden.
• (7) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22A entweder mit dem einen oder den mehreren Vorsprüngen 223 des Rotorkerns 22A, die in dem einen oder den mehreren Schlitzen 211 des Rahmens 21A festgeklemmt sind (siehe 4), oder mit dem einen oder den mehreren Vorsprüngen 213 des Rahmens 21A, die in dem einen oder den mehreren Schlitzen 224 des Rotorkern 22A festgeklemmt sind (siehe 5), an dem Rahmen 21A fixiert.

With adjustment of the thickness T1 as before, it is possible to have the one or more protrusions 413 of the stator core 41A in the one or more slots 711 of the wave main body 71 firmly to fix. In particular, in the case where T1 is set larger than W1, it is possible to have the one or more protrusions 413 of the stator core 41A in the one or more slots 711 of the wave main body 71 press-fit.

• (6) In the present embodiment, the stator core is 41A on the carrier shaft 70A fixed. A heat passing through the stator 40A is generated during operation, consequently, via the carrier wave 70A be derived.
• (7) In the present embodiment, the rotor core is 22A either with the one or more protrusions 223 of the rotor core 22A that in the one or more slots 211 of the frame 21A are clamped (see 4 ), or with the one or more protrusions 213 of the frame 21A that in the one or more slots 224 of the rotor core 22A are clamped (see 5 ), on the frame 21A fixed.

• (8) Bei dem vorliegenden Ausführungsbeispiel sind der eine oder die mehreren Schlitze 211 in dem Rahmen 21A in der Richtung, die die axiale Richtung AX der Trägerwelle 70A schneidet, gebildet; der eine oder die mehreren Schlitze 224 sind alternativ in dem Rotorkern 22A in der Richtung, die die axiale Richtung AX schneidet, gebildet.

If thus the rotating electric machine 10A is subjected to vibration for a long period of time, it is possible to wear the rotor core 22A and the frame 21A due to friction between them. If also the frame 21A is made of an electrically conductive material, the rotor core 22A with the frame 21A electrically connected, whereby a variation of an electric potential in the rotor core 22A caused by an aging deterioration of the rotor core 22A is caused, is suppressed.

• (8) In the present embodiment, the one or more slots are 211 in the frame 21A in the direction that the axial direction AX of the carrier shaft 70A cuts, formed; the one or more slots 224 are alternatively in the rotor core 22A in the direction that intersects the axial direction AX.

• (9) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22A durch Schichten der magnetischen Stahlbleche 221 gebildet. Bei einigen der magnetischen Stahlbleche 221 ist außerdem jeweils die Abschrägung 222 an dem Ende auf der Seite des Rahmens 21A derselben gebildet.

With the previous formation, the one or more protrusions 223 of the rotor core 22A in the one or more slots 211 of the frame 21A clamped in the direction intersecting the axial direction AX; the one or more protrusions 213 of the frame 21A are alternatively in the one or more slots 224 of the rotor core 22A in the direction that intersects the axial direction AX, clamped. It is therefore possible to wear the rotor core 22A and the frame 21A due to a vibration generated in the axial direction AX to effectively suppress.

• (9) In the present embodiment, the rotor core is 22A by laminating the magnetic steel sheets 221 educated. For some of the magnetic steel sheets 221 is also the chamfer 222 at the end on the side of the frame 21A the same formed.

• (10) Bei dem vorliegenden Ausführungsbeispiel ist die Dicke T3 der magnetischen Stahlbleche 221 auf größer als oder gleich der Breite W3 der Schlitze 211 des Rahmens 21A eingestellt (siehe 4).

With the bevels 222 Thus, the one or more protrusions may 223 of the rotor core 22A in the one or more slots 211 of the frame 21A be clamped without further ado; alternatively, the one or more protrusions 213 of the frame 21A in the one or more slots 224 of the rotor core 22A be clamped without further ado.

• (10) In the present embodiment, the thickness T3 is the magnetic steel sheets 221 greater than or equal to the width W3 of the slots 211 of the frame 21A set (see 4 ).

• (11) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22A an dem Rahmen 21A fixiert. Eine Wärme, die durch den Rotor 20A während eines Betriebs erzeugt wird, kann folglich über den Rahmen 21A abgeleitet werden.
• (12) Bei dem vorliegenden Ausführungsbeispiel ist der Rotor 20A durch die Trägerwelle 70A über das Lager 30, das die lagernden Elemente und das Schmiermittel aufweist, drehbar getragen. Entweder oder sowohl die lagerenden Elemente als auch das Schmiermittel sind außerdem elektrisch leitfähig.

With adjustment of the thickness T3 as before, it is possible to have the one or more protrusions 223 of the rotor core 22A in the one or more slots 211 of the frame 21A firmly to fix. In particular, in the case where T3 is set larger than W3, it is possible to have the one or more protrusions 223 of the rotor core 22A in the one or more slots 211 of the frame 21A press-fit.

• (11) In the present embodiment, the rotor core is 22A on the frame 21A fixed. A heat passing through the rotor 20A generated during an operation, therefore, over the frame 21A be derived.
• (12) In the present embodiment, the rotor is 20A through the carrier shaft 70A over the camp 30 having the bearing members and the lubricant rotatably supported. Either or both the bearing elements and the lubricant are also electrically conductive.

With the previous configuration, the rotor 20A over the camp 30 with the carrier shaft 70A be electrically connected. It is therefore possible, the voltage of the carrier wave 70A and the electric current of the warehouse 30 lower, thereby reducing the life of the bearing 30 is extended.

Second Embodiment

In this embodiment, a rotary electric machine 10 according to the present invention as a rotary electric machine 10B of a type with an internal rotor; a rotor 20 according to the present invention is as a rotor 20B the rotating electric machine 10B a type with an inner rotor executed; a stator 40 according to the present invention is as a stator 40B the rotating electric machine 10B of a type having an inner rotor. For consistency, in addition, a part of the remaining components of the rotating electrical machine 10B of a type having an inner rotor, respectively, denoted by respective reference numerals with a suffix "B".

As in 6 is shown in the present embodiment, the rotating electric machine 10B a type with an inner rotor the rotor 20B , a warehouse 30 , the stator 40B and a rotating shaft 70B on.

The rotor 20B has a rotor core 22 and a plurality of magnets 23 that in the rotor core 22 is provided on.

The rotor core 22 can have any suitable configuration. The rotor core 22 For example, it may be configured with a laminate, a one-piece body, or a plurality of rotor core segments. In the present embodiment, the rotor core is 22 formed by laminating a plurality of magnetic steel sheets.

The magnets 23 have the same configuration and are in the same manner as the same in the first embodiment on the rotor core 22 fixed.

In the present embodiment, the rotor core is 22 on the rotating shaft 70B fixed. The rotor core 22 can be said more precisely about a fixation device F3, as it is in 6 is shown on the rotating shaft 70B be fixed. The fixing device F3 can be replaced by at least one fastening device (for example Bolts or screws), a joining device (for example by soldering or welding) or a binding device (for example an adhesive). In addition, in the case of a fixing device made of an electrically conductive material, the fixing device F3 further functions as a means for electrically connecting all of the magnetic steel sheets of the rotor core 22 , The rotor core 22 Alternatively, by press fitting the rotating shaft 70B into a through hole in the rotor core 22 is formed on the rotating shaft 70B be fixed.

The warehouse 30 is between the stator 40B and the rotating shaft 70B arranged. The warehouse 30 has bearing elements and a lubricant, all of which are preferably electrically conductive. More specifically, the electrically conductive supporting elements may be made of an electrically conductive metal such as copper or iron. The electroconductive lubricant may have an electroconductive substance mixed therein. About the camp 30 is the rotating shaft 70B through the stator 40B rotatably supported.

The stator 40B has a stator core 41 , a stator coil 42 and a frame 43 on. The stator core 41 has a plurality of grooves (not shown) formed therein. The stator coil 42 is on the stator core 41 wrapped around in the slots of the stator core 41 partially included.

The stator core 41 is made of a magnetic material. The stator core 41 can also have any suitable configuration. The stator core 41 For example, it may be configured with a laminate, a one-piece body, or a plurality of stator core segments. In the present embodiment, the stator core 41 formed by laminating a plurality of magnetic steel sheets.

The frame 43 is on the outer peripheral side of the stator core 41 arranged. The frame 43 may be considered as a base member to which the stator core 41 is fixed.

The frame 43 can be made of any suitable material in any suitable form. The frame 43 For example, it may be made of a shielding material for shielding electromagnetic noise. In this case, it is also preferable that the frame 43 is made of a shielding material that is difficult to magnetize. The frame 43 may alternatively be made of a non-magnetic material.

In the present embodiment, the frame 43 substantially cup-shaped around a central portion for mounting the rotary electric machine 10B in, for example, a vehicle and a peripheral portion for fixing the stator core 41 exhibit. Both the central and peripheral sections of the frame 43 can be additionally formed by bending.

The stator core 41 can be either directly on an inner periphery of the peripheral portion of the frame 43 or on a pedestal (not shown) attached to the inner periphery of the peripheral portion of the frame 43 is formed, be fixed.

In the present embodiment, the stator core 41 via a fixing device F2, as in 6 is shown on the frame 43 fixed. The fixing device F2 may be implemented by at least one of a fastening device (for example, bolts or screws), a joining device (for example, soldering or welding), or a bonding device (for example, an adhesive). In addition, in the case of a fixing device F2 made of an electrically conductive material, the fixing device F2 functions as a means for electrically connecting all the magnetic steel sheets of the stator core 41 ,

In addition, in the present embodiment, the frame is 43 with an external link 80 connected and thereby grounded. The external link 80 can be any device, some article or any material that or that is outside the rotating electrical machine 10B provided that the same, the same or the same can maintain the electrical potential of the same or the same at an electrical reference potential which may be equal to 0 V but is not limited thereto.

The frame 43 may further comprise a connecting portion 50B for example, at one end thereof to the one of the bearing 30 opposite side (that is, the lower end in 6 ) have formed. The connecting section 50B can be replaced by a metal link (for example, a bolt or a pin) attached to the frame 43 is moored, or a connector attached to the end of the frame 43 is inserted, implemented. In this case, the frame 43 by connecting the connection section 50B with the external link 80 over an electric wire 60 be grounded. The connecting section 50B who in 6 in addition, may further function as the fixing device F2.

The frame 43 may alternatively have no connecting portion formed therein. In this case, the frame 43 grounded by being the same with the external link 80 directly connected.

Although it is not shown in the drawings, the stator core may additionally be used 41 in the frame 43 be press-fitted. In this case, it is possible, for example, a screw in the frame 43 to form, thereby allowing the electric wire 60 is fastened to the screw.

The rotating shaft 70B is made of an electrically conductive material. The rotating shaft 70B can be considered a base member to which the rotor core 22 is to be considered fixed. In the present embodiment, the rotating shaft 70B configured to a shaft main body 73 and at least one flange portion 74 for firmly fixing the rotor core 22 on the shaft main body 73 exhibit. The rotating shaft 70B more precisely, on one side of the rotor core 22 as it is by a solid line in 6 is shown, only a flange portion 74 or each on opposite sides of the rotor core 22 as indicated by the solid line and a two-dot-and-dash line in 6 shown is a pair of flange portions 74 to have. As in 6 can also be shown the rotor core 22 and the flange portion (s) 74 the rotating shaft 70B Through holes formed therein have so that the rotor core 22 by bolts (that is, the fixing means F3) inserted in the through-holes on the rotating shaft 70B can be fixed.

The rotating shaft 70B In addition, it may be further configured not to have a flange portion. In this case, the rotor core 22 by press fitting the rotating shaft 70B into a through hole in the rotor core 22 or by forming a wedge in either the rotor core 22 or the rotating shaft 20B and a keyway in the other and then fitting the wedge into the keyway (see, for example JIS B1301-B1303 ) on the rotating shaft 70B be fixed.

After the overall configuration of the rotating electric machine 10B According to the present embodiment, the manner of clamping two components to each other in the rotary electric machine is described 10B with reference to 7 - 10 described.

7 illustrates a first example of clamping the rotor core 22B on the shaft main body 73 the rotating shaft 70B at the rotating electric machine 10B represents.

As in 7 is shown in this example has the rotor core 22B one or more projections 227 formed on the inner peripheral surface thereof to be in a direction to the shaft main body 73 the rotating shaft 70B (that is, the transverse direction DC or the right direction in 7 ) to project.

The rotor core 22B is from the magnetic steel sheets 225 in the axial direction AX of the rotating shaft 70B layered, formed. The magnetic steel sheets 225 may be formed to have either a planar shape or a non-planar shape (for example, a curved or concavo-convex shape).

In this example also has a part (at least one) of the magnetic steel sheets 225 in the transverse direction DC a different length than the other magnetic steel sheets 225 ,

Some of the magnetic steel sheets 225 also each have a bevel 226 at the end on the side of the shaft main body 73 is formed of the same, wherein none of the remaining magnetic steel sheets 225 has a chamfer at the end on the side of the shaft main body 73 is formed of the same. It should be noted that all magnetic steel sheets 225 one bevel each 226 which may be at the end on the side of the shaft main body 73 is formed, or each have no bevel, which at the end on the side of the shaft main body 73 is formed of the same.

The projections 227 of the rotor core 22B In addition, by setting different lengths of the magnetic steel sheets 225 the same in the transverse direction DC or by an offset of some of the magnetic steel sheets 225 in the transverse direction DC during the process of laminating the magnetic sheets 225 be formed.

The wave main body 73 the rotating shaft 70B on the other hand has one or more slots 731 in the outer circumferential surface in the transverse direction DC, which is the axial direction AX of the rotating shaft 70B cuts are formed. It should be noted that the transverse direction DC includes, but is not limited to, a direction perpendicular to the axial direction AX.

The slots 731 Can be used in any form, for clamping the protrusions 227 of the rotor core 22B is suitable to be formed. The slots 731 for example, each in a concave groove, as in 7 is shown to be formed. The Schmitze 731 Alternatively, each may be formed into a linear section or a step.

Further, in this example, the thickness T5 of the magnetic steel sheets is 225 that the rotor core 22B form as greater than or equal to the width W5 of the slots 731 in the shaft main body 73 the rotating shaft 70B are formed (that is, T5 ≥ W5). In the case that T5 is larger than W5, in addition, the projections 227 of the rotor core 22B in the slots 731 be press fitted, leaving them in the slots 731 be clamped.

8th illustrates a second example of clamping the rotor core 22B on the shaft main body 73 the rotating shaft 70B at the rotating electric machine 10B represents.

As in 8th is shown in this example has the rotor core 22B one or more slots 228 formed in the inner circumferential surface thereof in a direction away from the shaft main body 73 the rotating shaft 70B (that is, the transverse direction DC or the left direction in FIG 8th ) to be absorbed.

A part (at least one) of the magnetic steel sheets 225 also has a different length in the transverse direction DC than the other magnetic steel sheets 225 ,

Some of the magnetic steel sheets 225 also each have a bevel 226 at the end on the side of the shaft main body 73 the same is formed while none of the remaining magnetic steel sheets 225 has a chamfer at the end on the side of the main shaft body 73 is formed of the same. With the bevels 226 from some of the magnetic steel sheets 225 are therefore the slots 228 in the rotor core 22B educated.

It should be noted that the slots 228 further in another way, for example by depressions, grooves or cuts in the inner circumferential surface of the rotor core 22B according to the method of laminating the magnetic steel sheets 225 can be formed.

The wave main body 73 the rotating shaft 70B on the other hand has one or more projections 733 formed on the outer peripheral surface thereof to project DC in the transverse direction. The projections 733 may be formed in any suitable shape, provided that the projections 733 in the slots 228 of the rotor core 22B can be clamped.

Further, in this example, the thickness T6 of the magnetic steel sheets is 225 that the rotor core 22B form as greater than or equal to the size W6 of the intervals between the protrusions 733 (or the width W6 of the slots between the protrusions 733 are formed) of the shaft main body 73 is set (that is, T6 ≥ W6). In addition, in the case that T6 is larger than W6, extreme ends of the magnetic steel sheets may 225 in the slots between the protrusions 733 of the wave main body 73 are formed, press-fitted, causing the protrusions 733 in the slots 228 of the rotor core 22B are clamped.

Further, although not shown in the drawings, it is possible to use the foregoing first and second examples of clamping the rotor core 22B on the shaft main body 73 the rotating shaft 70B to combine. The rotor core 22B may be more specifically modified to one or more protrusions 227 as well as one or more slots 228 to have; the wave main body 73 can be modified to one or more slots 731 and one or more projections 733 to have. In this case, it is therefore possible, the projections 227 of the rotor core 22b in the slots 731 of the wave main body 73 clamp while the protrusions 733 of the wave main body 73 in the slots 228 of the rotor core 22B be clamped.

9 illustrates a first example of clamping the stator core 41B on the frame 43B at the rotating electric machine 10B represents.

As in 9 shown in this example has the stator core 41B one or more projections 417 formed on the outer peripheral surface thereof in a direction toward the frame 43B (ie the legal direction in 9 ) to project.

The stator core 41B is from the magnetic steel sheets 415 in the top-down direction in 9 layered, formed. The magnetic steel sheets 415 may be formed to have either a planar shape or a non-planar shape (for example, a curved or concavo-convex shape).

In this example also has a part (at least one) of the magnetic steel sheets 415 in the direction to the frame 43B a different length than the other magnetic steel sheets 415 ,

Some of the magnetic steel sheets 415 also each have a bevel 416 at the end on the side of the frame 43B the same is formed while none of the remaining magnetic steel sheets 415 has a bevel at the end on the side of the frame 43B is formed of the same. It should be noted that all magnetic steel sheets 415 one bevel each 416 can have that at the end on the side of the frame 43B the same is formed, or each none Bevel at the end on the side of the frame 43B is formed of the same.

The projections 417 of the stator core 41B In addition, by adjusting different lengths of the magnetic steel sheets 415 in the direction to the frame 43B or by an offset of some of the magnetic steel sheets 415 in the direction to the frame 43B during the process of laminating the magnetic steel sheets 415 be formed.

The frame 43B on the other hand has one or more slots 431 in the inner circumferential surface thereof in the left-right direction in FIG 9 are formed. It should be noted that the left-right direction in 9 the axial direction AX of the rotating shaft 70B and has a direction that is perpendicular to the axial direction AX, but is not limited thereto.

The slots 431 Can be used in any form, for a clamping of the protrusions 417 of the stator core 41B is suitable to be formed. The slots 431 for example, each in a concave groove, as in 9 is shown to be formed. The slots 431 Alternatively, each may be formed into a linear section or a step.

Further, in this example, the thickness T7 of the magnetic steel sheets is 415 that the stator core 41B form as greater than or equal to the width W7 of the slots 431 that in the frame 43B are formed (that is, T7 ≥ W7). In the case that T7 is larger than W7, in addition, the projections 417 of the stator core 41B in the slots 431 be press fitted, leaving them in the slots 431 are clamped.

10 illustrates a second example of clamping the stator core 41B on the frame 43B at the rotating electric machine 10B represents.

As in 10 shown in this example has the stator core 41B one or more slots 418 formed in the outer peripheral surface thereof in a direction away from the frame 43B (that is the left direction in 10 ) to be absorbed.

A part (at least one) of the magnetic steel sheets 415 also has in the direction away from the frame 43B a different length than the other magnetic steel sheets 415 ,

Some of the magnetic steel sheets 415 also each have a bevel 416 at the end on the side of the frame 43B the same is formed while none of the remaining magnetic steel sheets 415 a bevel at the end on the side of the frame 43B of the same has formed. With the bevels 416 the some of the magnetic steel sheets 415 are therefore the slots 418 in the stator core 41B educated.

It should be noted that the slots 418 in another way, for example, by depressions, grooves or slits, in the outer circumferential surface of the stator core 41B according to the method of laminating the magnetic steel sheets 415 can be formed.

The frame 43B on the other hand has one or more projections 433 formed in the inner peripheral surface thereof in a direction toward the stator core 41B (that is the left direction in 10 ) to project. The projections 433 may be formed in any suitable shape, provided that the projections 433 in the slots 418 of the stator core 41B can be clamped.

Further, in this example, the thickness T8 of the magnetic steel sheets is 415 that the stator core 41B form as greater than or equal to the size W8 of the intervals between the protrusions 433 (or the width W8 of slots between the protrusions 433 are formed) of the frame 43B set (that is, T8 ≥ W8). In addition, in the case that T8 is larger than W8, extreme ends of the magnetic steel sheets may be inserted into the slots formed between the projections 433 of the frame 43B are formed, press-fitted, causing the protrusions 433 in the slots 418 of the stator core 41B are clamped.

Further, although not shown in the drawings, it is possible to use the foregoing first and second examples of clamping the stator core 41B on the frame 43B to combine. The stator core 41B may be more specifically modified to one or more protrusions 417 as well as one or more slots 418 to have; the frame 43B can be modified to one or more slots 431 and one or more projections 433 to have. In this case, it is therefore possible, the projections 417 of the stator core 41B in the slots 431 of the frame 43B clamp while the protrusions 433 of the frame 43B in the slots 418 of the stator core 41B be clamped.

• (1) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22B entweder mit dem einen oder den mehreren Vorsprüngen 227 des Rotorkerns 22B, der oder die in dem einen oder den mehreren Schlitzen 731 des Wellenhauptkörpers 73 der drehenden Welle 70B festgeklemmt ist oder sind (siehe 7), oder mit dem einen oder den mehreren Vorsprüngen 733 des Wellenhauptkörpers 73 der drehenden Welle 70B, der oder die in dem einen oder den mehreren Schlitzen 228 des Rotorkerns 22B festgeklemmt ist oder sind (siehe 8), an der drehenden Welle 70B fixiert.

According to the present embodiment, it is possible to achieve at least the following advantageous effects.

• (1) In the present embodiment, the rotor core is 22B either with the one or more protrusions 227 of the rotor core 22B that is in the one or more slots 731 of the wave main body 73 of the rotating shaft 70B is clamped or are (see 7 ), or with the one or more protrusions 733 of the wave main body 73 the rotating shaft 70B that is in the one or more slots 228 of the rotor core 22B is clamped or are (see 8th ), on the rotating shaft 70B fixed.

• (2) Bei dem vorliegenden Ausführungsbeispiel sind der eine oder die mehreren Schlitze 731 in dem Wellenhauptkörper 73 der drehenden Welle 70B in der Querrichtung DC, die die axiale Richtung AX der drehenden Welle 70B (siehe 7) schneidet, gebildet; der eine oder die mehreren Schlitze 228 sind alternativ in dem Rotorkern 22B in der Querrichtung DC (siehe 8) gebildet.

If thus the rotating electric machine 10B is subjected to vibration for a long period of time, it is possible to wear the rotor core 22B and the rotating shaft 70B due to friction between them. In addition, if the rotating shaft 70B is made of an electrically conductive material, the rotor core 22B with the rotating shaft 70B electrically connected, whereby a variation of an electric potential in the rotor core 22B caused by an aging deterioration of the rotor core 22B is caused, is suppressed.

• (2) In the present embodiment, the one or more slots are 731 in the wave main body 73 the rotating shaft 70B in the transverse direction DC, which is the axial direction AX of the rotating shaft 70B (please refer 7 ) cuts, formed; the one or more slots 228 are alternatively in the rotor core 22B in the transverse direction DC (see 8th ) educated.

• (3) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22B aus den magnetischen Stahlblechen 225, die in der axialen Richtung AX der drehenden Welle 70B geschichtet sind, gebildet. Alle magnetischen Stahlbleche 225 sind außerdem durch die Fixierungseinrichtung F3 (siehe 6) elektrisch verbunden.

With the previous formation, the one or more protrusions 227 of the rotor core 22B in the one or more slots 731 of the wave main body 73 clamped in the transverse direction DC; the one or more projections 733 of the wave main body 73 are alternatively in the one or more slots 228 of the rotor core 22B clamped in the transverse direction DC. It is therefore possible to wear the rotor core 22B and the rotating shaft 70B due to a vibration generated in the axial direction AX to effectively suppress.

• (3) In the present embodiment, the rotor core is 22B from the magnetic steel sheets 225 in the axial direction AX of the rotating shaft 70B layered, formed. All magnetic steel sheets 225 are also by the fixing device F3 (see 6 ) electrically connected.

• (4) Bei dem vorliegenden Ausführungsbeispiel haben einige der magnetischen Stahlbleche 225 jeweils die Abschrägung 226, die an dem Ende auf der Seite des Wellenhauptkörpers 73 derselben gebildet ist.

With the previous configuration, all magnetic steel sheets can 225 held at the same electrical potential, causing in the rotor core 22B a variation of an electric potential is suppressed.

• (4) In the present embodiment, some of the magnetic steel sheets have 225 each bevel 226 at the end on the side of the shaft main body 73 is formed of the same.

• (5) Bei dem vorliegenden Ausführungsbeispiel ist die Dicke T5 der magnetischen Stahlbleche 225 als größer als oder gleich der Breite W5 der Schlitze 731 des Wellenhauptkörpers 73 eingestellt (siehe 7).

With the bevels 226 Consequently, the one or more projections 227 of the rotor core 22B in one or more slots 731 of the wave main body 73 be clamped without further ado; the one or more projections 733 of the wave main body 73 alternatively, in the one or more slots 228 of the rotor core 22B be clamped without further ado.

• (5) In the present embodiment, the thickness T5 is the magnetic steel sheets 225 as greater than or equal to the width W5 of the slots 731 of the wave main body 73 set (see 7 ).

• (6) Bei dem vorliegenden Ausführungsbeispiel ist der Rotorkern 22B an der drehenden Welle 70B fixiert. Eine Wärme, die durch den Rotor 20B während eines Betriebs erzeugt wird, kann folglich über die drehende Welle 70B abgeleitet werden.
• (7) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41B entweder mit dem einen oder den mehreren Vorsprüngen 417 des Statorkerns 41B, die in dem einen oder den mehreren Schlitzen 431 des Rahmens 43B festgeklemmt sind (siehe 9), oder mit dem einen oder den mehreren Vorsprüngen 433 des Rahmens 43B, die in dem einen oder den mehreren Schlitzen 418 des Statorkerns 41B festgeklemmt sind (siehe 10), an dem Rahmen 43B fixiert.

By adjusting the thickness T5 as above, it is possible to have the one or more protrusions 227 of the rotor core 22B in the one or more slots 731 of the wave main body 73 firmly to fix. In particular, in the case where T5 is set larger than W5, it is possible to have the one or more protrusions 227 of the rotor core 22B in the one or more slots 731 of the wave main body 73 press-fit.

• (6) In the present embodiment, the rotor core is 22B on the rotating shaft 70B fixed. A heat passing through the rotor 20B is generated during operation, therefore, on the rotating shaft 70B be derived.
• (7) In the present embodiment, the stator core is 41B either with the one or more protrusions 417 of the stator core 41B that in the one or more slots 431 of the frame 43B are clamped (see 9 ), or with the one or more protrusions 433 of the frame 43B that in the one or more slots 418 of the stator core 41B are clamped (see 10 ), on the frame 43B fixed.

• (8) Bei dem vorliegenden Ausführungsbeispiel sind der eine oder die mehreren Schlitze 431 in dem Rahmen 43B in der Richtung, die die axiale Richtung AX der drehenden Welle 70B schneidet, gebildet; der eine oder die mehreren Schlitze 418 sind alternativ in der Richtung, die die axiale Richtung AX schneidet, in dem Statorkern 41B gebildet.

If thus the rotating electric machine 10B is subjected to vibration for a long period of time, it is possible wear of the stator core 41B and the frame 43B due to friction between them. If also the frame 43B is made of an electrically conductive material, the stator core 41B with the frame 43B electrically connected, whereby a variation of an electric potential in the stator core 41B caused by aging of the stator core 41B is caused, is suppressed.

• (8) In the present embodiment, the one or more slots are 431 in the frame 43B in the direction that the axial direction AX of the rotating shaft 70B cuts, formed; the one or more slots 418 are alternatively in the direction that intersects the axial direction AX in the stator core 41B educated.

• (9) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41B durch Schichten der magnetischen Stahlbleche 415 gebildet. Alle magnetischen Stahlbleche 415 sind außerdem durch die Fixierungseinrichtung F2 (siehe 6) elektrisch verbunden.

With the previous formation, the one or more protrusions 417 of the stator core 41B in the one or more slots 431 of the frame 43B clamped in the direction intersecting the axial direction AX; the one or more protrusions 433 of the frame 43B are alternatively in the one or more slots 418 of the stator core 41B in the direction that intersects the axial direction AX, clamped. It is therefore possible to wear the stator core 41B and the frame 43B due to a vibration generated in the axial direction AX to effectively suppress.

• (9) In the present embodiment, the stator core is 41B by laminating the magnetic steel sheets 415 educated. All magnetic steel sheets 415 are also by the fixing device F2 (see 6 ) electrically connected.

• (10) Bei dem vorliegenden Ausführungsbeispiel haben einige der magnetischen Stahlbleche 415 jeweils die Abschrägung 416, die an dem Ende auf der Seite des Rahmens 43B derselben gebildet ist.

With the previous configuration, all magnetic steel sheets can 415 be kept at the same electrical potential, causing in the stator core 41B a variation of an electric potential is suppressed.

• (10) In the present embodiment, some of the magnetic steel sheets have 415 each bevel 416 at the end on the side of the frame 43B is formed of the same.

• (11) Bei dem vorliegenden Ausführungsbeispiel ist die Dicke T7 der magnetischen Stahlbleche 415 als größer als oder gleich der Breite W7 der Schlitze 431 des Rahmens 43B eingestellt (siehe 9).

With the bevels 416 Consequently, the one or more projections 417 of the stator core 41B in the one or more slots 431 of the frame 43B be clamped without further ado; the one or more protrusions 433 of the frame 43B alternatively, in the one or more slots 418 of the stator core 41B be clamped without further ado.

• (11) In the present embodiment, the thickness T7 is the magnetic steel sheets 415 as greater than or equal to the width W7 of the slots 431 of the frame 43B set (see 9 ).

• (12) Bei dem vorliegenden Ausführungsbeispiel ist der Statorkern 41B an dem Rahmen 43B fixiert. Eine Wärme, die durch den Stator 40B während eines Betriebs erzeugt wird, kann über den Rahmen 43B abgeleitet werden.
• (13) Bei dem vorliegenden Ausführungsbeispiel ist die drehende Welle 70B durch den Stator 40B über das Lager 30, das die tragenden Elemente und das Schmiermittel aufweist, drehbar getragen. Entweder oder sowohl die tragenden Elemente als auch das Schmiermittel sind außerdem elektrisch leitfähig.

With adjustment of the thickness T7 as before, it is possible to have the one or more protrusions 417 of the stator core 41B in the one or more slots 431 of the frame 43B firmly to fix. In particular, in the case where T7 is set larger than W7, it is possible to have the one or more protrusions 417 of the stator core 41B in the one or more slots 431 of the frame 43B press-fit.

• (12) In the present embodiment, the stator core is 41B on the frame 43B fixed. A heat passing through the stator 40B generated during an operation can be over the frame 43B be derived.
• (13) In the present embodiment, the rotary shaft is 70B through the stator 40B over the camp 30 having the supporting members and the lubricant rotatably supported. Either or both the supporting elements and the lubricant are also electrically conductive.

With the previous configuration, the stator 40B over the camp 30 with the rotating shaft 70B be electrically connected. It is therefore possible, the voltage of the rotating shaft 70B and the electric current of the warehouse 30 lower, thereby reducing the life of the bearing 30 is extended.

[Third Embodiment]

This embodiment provides the grounding of a rotating electrical machine 10 according to the present invention in a motor vehicle 100 represents.

As in 11 is shown, in this embodiment, the vehicle 100 configured as a hybrid vehicle. That is, the vehicle 100 has both a machine 101 as well as the rotating electric machine 10 as sources of power.

In the present embodiment, a connection portion 50 the rotating electric machine 10 over electrical wires 60 with at least either the machine 101 , a steering system 102 a rack 103 or a body 104 of the vehicle 100 connected. The connecting section 50 can as the connecting section 50A at the rotating electric machine 10A according to the first embodiment (see 1 ) or as the connecting section 50B at the rotating electric machine 10B according to the second embodiment (see 6 ). Both the machine 101 , the steering 102 , the frame 103 as well as the body 104 can as the external link 80 that is described in the first and second embodiments work. With the foregoing electrical connection, it is therefore possible to use the stator core 41 or the rotor core 22 to ground. If further the bearing 30 the rotating electric machine 10 is configured with electrically conductive supporting elements and an electrically conductive lubricant, it is possible both the stator core 41 as well as the rotor core 22 to ground. As a result, it is possible to prevent due to a variation of an electric potential in the stator core 41 and the rotor core 22 an electromagnetic noise is generated.

• (1) Bei dem vorliegenden Ausführungsbeispiel hat die drehende elektrische Maschine 10 den Verbindungsabschnitt 50, der über die elektrischen Drähte 60 mit dem externen Glied 80 elektrisch verbunden ist. Es ist daher möglich, entweder oder sowohl den Statorkern 41 als auch den Rotorkern 22 der drehenden elektrischen Maschine 10 an Masse zu legen. Es ist folglich möglich, eine Variation eines elektrischen Potenzials in entweder oder sowohl dem Statorkern 41 als auch dem Rotorkern 22 zu unterdrücken, wodurch verhindert wird, das ein elektromagnetisches Rauschen in entweder oder sowohl dem Statorkern 41 als auch dem Rotorkern 22 aufgrund der Variation eines elektrischen Potenzials erzeugt wird. Als ein Resultat ist es möglich, zu verhindern, dass andere Komponenten der drehenden elektrischen Maschine 10 und andere elektrische Vorrichtungen, die sich in der Nähe der drehenden elektrischen Maschine 10 befinden, durch ein elektromagnetisches Rauschen, das in entweder oder sowohl dem Statorkern 41 als auch dem Rotorkern 22 erzeugt wird, beeinträchtigt werden.
• (2) Bei dem vorliegenden Ausführungsbeispiel ist das externe Glied 80 bei mindestens entweder der Maschine 101, der Lenkung 102, dem Gestell 103 oder dem Körper 104 des Fahrzeugs 100 ausgeführt. Es ist folglich möglich, entweder oder sowohl den Statorkern 41 als auch den Rotorkern 22 der drehenden elektrischen Maschine 10 mit einem niedrigen Aufwand zuverlässig an Masse zu legen.

According to the present embodiment, it is possible to achieve at least the following advantageous effects.

• (1) In the present embodiment, the rotary electric machine has 10 the connecting section 50 that has the electrical wires 60 with the external link 80 electrically connected. It is therefore possible either or both the stator core 41 as well as the rotor core 22 the rotating electric machine 10 to ground. It is thus possible to have a variation of an electric potential in either or both of the stator core 41 as well as the rotor core 22 to suppress, which prevents electromagnetic noise in either or both the stator core 41 as well as the rotor core 22 due to the variation of an electrical potential is generated. As a result, it is possible to prevent other components of the rotary electric machine 10 and other electrical devices located in the vicinity of the rotating electrical machine 10 due to electromagnetic noise in either or both the stator core 41 as well as the rotor core 22 is generated.
• (2) In the present embodiment, the external member is 80 at least either the machine 101 , the steering 102 , the frame 103 or the body 104 of the vehicle 100 executed. It is therefore possible either or both the stator core 41 as well as the rotor core 22 the rotating electric machine 10 Reliable with a low cost to ground.

Although the foregoing particular embodiments are shown and described, it will be understood by those skilled in the art that various modifications, changes and improvements may be made without departing from the spirit of the present invention.

At the in 2 - 5 and 7 - 10 As shown, all the chamfers of the magnetic steel sheets are formed to deviate from the transverse direction DC to the same side (that is, the upper side in those figures). However, the chamfers of the magnetic steel sheets may be formed to deviate from the transverse direction DC toward different sides. For an example that is in 12 More specifically, there are five magnetic steel sheets 411 , each one a bevel 412 have that at the end on the side of the shaft main body 71 is formed of the same. Among the five magnetic steel sheets 411 are at three (that is, the top two and the lowest one) magnetic steel sheets 411 the respective bevels 412 is formed to deviate upward from the transverse direction DC, while the other two magnetic steel sheets 411 the respective bevels 412 are formed to deviate from the transverse direction DC down. With this configuration, it is possible to wear the stator core 41A and the carrier wave 70A due to friction therebetween caused by vibration in both opposite axial directions AX, to more effectively suppress.

At the in 2 - 5 and 7 - 10 As shown, all chamfers of the magnetic steel sheets are formed to be flat in shape. However, the chamfers of the magnetic steel sheets may be formed into other shapes. As in 13 For example, each of the bevels may be shown 412 of magnetic steel sheets 411 be formed to at the distal end thereof an engaging portion 419 to have. The wave main body 71 On the other hand, it may be formed to include an engaged portion 714 in each of the slots 711 to have. The engaging sections 419 and the intervened sections 714 can have suitable shapes, provided that the engaging sections 419 with the intervened sections 714 can intervene. With an engagement between the engaging sections 419 and the intervened sections 714 It is therefore possible to wear the stator core 41A and the carrier wave 70A due to a friction therebetween caused by a vibration in the transverse direction DC. As previously described, it is in addition to the projections 413 of the stator core 41A in the slots 711 of the wave main body 71 clamped, possible, wear of the stator core 41A and the carrier wave 70A due to friction therebetween caused by vibration in the axial direction AX.

At the in 2 - 3 and 7 - 8th As shown, the projections are respectively clamped in the slots in the transverse direction DC which intersects the axial direction AX. However, the protrusions and the slits may be modified such that the protrusions in the slots in a direction corresponding to the plane (or the paper surface of each of the 2 - 3 and 7 - 8th ), which has both the axial direction AX and the transverse direction DC, cuts, are respectively clamped.

In the third embodiment, the external member is 80 as at least either the machine 101 , the steering 102 , the frame 103 or the body 104 of the vehicle 100 executed. The external link 80 however, can be considered as other components of the vehicle 100 , such as a seat frame and a control device (for example, a ECU or a navigation device).

In the third embodiment, the present invention is further applicable to the rotary electric machine 10 in the motor vehicle 100 used, directed. However, the present invention may be further applied to rotary electric machines for any other uses.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2012-249404 [0002]

Cited non-patent literature

• JIS B1301-B1303 [0046]
• JIS B1301-B1303 [0115]

Claims (14)

Stator ( 40 . 40A . 40B ) for a rotating electrical machine ( 10 . 10A . 10B ), wherein the stator has a stator core ( 41 . 41A . 41B ) and a stator coil ( 42 ), which is wound on the stator core, characterized in that the stator core is configured to engage with at least one projection ( 413 . 713 . 417 . 433 ) located in at least one slot ( 711 . 414 . 431 . 418 ) is clamped to a base member ( 70A . 43B ) at the rotary electric machine, wherein the at least one protrusion is formed in one of the stator core and the base member, and the at least one slot is formed in the other of the stator core and the base member. Stator according to claim 1, wherein the at least one slot in a direction (DC), the one axial direction (AX) of a shaft ( 70 . 70A . 70B ) of the rotating electrical machine is formed. A stator according to claim 1 or 2, wherein said stator core is made of a plurality of magnetic steel sheets ( 411 . 415 ), which are laminated together, and means (F1, F2) for electrically connecting all the magnetic steel sheets of the stator core is provided. Stator according to claim 3, in which some of the magnetic steel sheets each have a bevel ( 412 . 416 ) formed at the end on the side of the base member thereof. A stator according to claim 3 or 4, wherein said magnetic steel sheets have a thickness (T1, T7) greater than or equal to a width (W1, W7) of said at least one slot. Rotor ( 20 . 20A . 20B ) for a rotating electrical machine ( 10 . 10A . 10B ), wherein the rotor has a rotor core ( 22 . 22A . 22B ) and a plurality of magnets ( 23 ) provided in the rotor core, characterized in that the rotor core is configured to engage with at least one projection ( 223 . 213 . 227 . 733 ) located in at least one slot ( 211 . 224 . 731 . 228 ) is clamped to a base member ( 21A . 70B ) at the rotary electric machine, wherein the at least one protrusion is formed in one of the rotor core and the base member, and the at least one slot is formed in the other of the rotor core and the base member. A rotor according to claim 6, wherein said at least one slot is in a direction (DC) which is an axial direction (AX) of a shaft (10). 70 . 70A . 70B ) of the rotating electrical machine is formed. A rotor according to claim 6 or 7, wherein the rotor core is made of a plurality of magnetic steel sheets ( 225 ), which are laminated together, and means (F3) for electrically connecting all the magnetic steel sheets of the stator core is provided. A rotor according to claim 8, wherein some of the magnetic steel sheets each have a bevel ( 222 . 226 ) formed at the end on the side of the base member thereof. A rotor according to claim 8 or 9, wherein the magnetic steel sheets have a thickness (T3, T5) greater than or equal to a width (W3, W5) of the at least one slot. Rotating electrical machine ( 10 . 10A . 10B ) comprising either or both the stator according to any one of claims 1-5 and the rotor according to any one of claims 6-10, characterized in that the base member ( 70A . 43B ) a connecting section ( 50 . 50A . 50B ) configured to communicate with an external member ( 80 ) and thereby grounded. Rotating electric machine according to claim 11, wherein the base member comprises a shaft ( 70A ) or a frame ( 43B ). Rotating electric machine according to claim 11, wherein either the stator or the rotor is driven by a shaft ( 70 . 70A . 70B ) about a warehouse ( 30 ) bearing bearing elements and a lubricant, and either or both the supporting elements and the lubricant are electrically conductive. The rotary electric machine according to any one of claims 11-13, wherein the rotary electric machine is configured to operate in a vehicle ( 100 ), wherein the external member is at least one machine ( 101 ), a steering ( 102 ), a frame ( 103 ) or a body ( 104 ) of the vehicle.

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