WO2014199516A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2014199516A1 WO2014199516A1 PCT/JP2013/066484 JP2013066484W WO2014199516A1 WO 2014199516 A1 WO2014199516 A1 WO 2014199516A1 JP 2013066484 W JP2013066484 W JP 2013066484W WO 2014199516 A1 WO2014199516 A1 WO 2014199516A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frame
- ring
- stator core
- rotating electrical
- electrical machine
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
Definitions
- the present invention relates to a rotating electrical machine in which a frame holding a stator core is housed in a housing case, and more particularly to a structure of a cooling water channel formed between the frame and the housing case.
- a motor casing that holds a stator inside is fitted in an intermediate housing that is joined to an engine, and a joint end of the intermediate housing It is joined and integrated with the housing of the transmission through the section.
- the motor casing has one end in the axial direction formed in the large diameter portion, the other end in the axial direction formed in the small diameter portion, and an O-ring storage groove formed on the outer peripheral surface of the large diameter portion and the small diameter portion, respectively.
- the O-ring is housed in the O-ring housing groove and is pressed and sandwiched between the motor casing and the intermediate housing, and a cooling water passage is formed between the motor casing and the intermediate housing.
- the present invention has been made to solve the above-mentioned problems, omitting an O-ring storage groove for storing at least one of O-rings that are mounted on a frame so as to be separated from each other in the axial direction, thereby reducing the processing cost associated with the cutting process.
- An object of the present invention is to obtain a rotating electrical machine that can reduce the material cost and weight.
- a rotating electrical machine includes a stator core, a stator having a stator coil wound around the stator core, a frame for fitting and fixing the stator core to hold the stator inside, and an outer peripheral surface of the frame.
- a first O-ring and a second O-ring that are mounted apart from each other in an axial direction; and a housing case that houses the frame and the stator, wherein the first O-ring and the second O-ring include the frame and the housing case.
- a cooling water passage is formed between the frame and the housing case. Then, the movement of the first O-ring in the axial direction is restricted by a position restricting member formed of a member different from the frame.
- the position restricting member that restricts the movement of the first O-ring in the axial direction is formed of a member different from the frame, the cutting for forming the O-ring housing groove on the outer peripheral surface of the frame. Processing is unnecessary, and processing costs can be reduced. Furthermore, since it is not necessary to make the frame thicker than the groove depth of the O-ring housing groove, the thickness of the frame can be reduced, the material cost of the frame can be reduced, and the weight can be reduced.
- FIG. 7 is a sectional view taken along arrow VII-VII in FIG. 6. It is principal part sectional drawing of the rotary electric machine which concerns on Embodiment 6 of this invention. It is sectional drawing which shows the rotary electric machine which concerns on Embodiment 7 of this invention.
- FIG. 1 is a cross-sectional view showing a rotary electric machine according to Embodiment 1 of the present invention.
- a rotating electrical machine 100 includes a rotor 2, a stator 6 disposed so as to surround the rotor 2, a frame 10 that holds the stator 6 therein, and a housing that houses the rotor 2 and the stator 6 therein.
- a case 15 and an end plate 20 that closes the opening of the housing case 15 are provided.
- the rotor 2 includes, for example, a rotor core 3 formed by laminating electromagnetic steel plates, and a permanent magnet 4 embedded in the outer peripheral surface side of the rotor core 3 so as to extend in the axial direction and disposed at an equiangular pitch in the circumferential direction. And a shaft 5 that is fixed to the rotor core 3 through the axial center position of the rotor core 3.
- the permanent magnet 4 is mounted on the rotor core 3 so that the N pole and the S pole are alternately arranged in the circumferential direction.
- the stator 6 includes, for example, an annular stator core 7 formed by laminating electromagnetic steel plates, and a stator coil 8 wound around the stator core 7.
- the frame 10 is made into a stepped cylindrical shape whose thickness increases stepwise toward one end in the axial direction by, for example, casting or forging using an iron-based material, and a cylindrical stator core housing with a uniform thickness is accommodated.
- a portion 10a and a thick frame attachment portion 10b formed continuously with one end of the stator core storage portion 10a.
- the axial length of the stator core storage portion 10 a is longer than the axial length of the stator core 7. Then, the stator 6 is held in the frame 10 by press-fitting and fixing the stator core 7 into the stator core storage portion 10a.
- the O-ring storage groove 11 is recessed in the outer peripheral surface of the frame mounting portion 10b of the frame 10.
- the pair of position restricting members 12 are made, for example, in an annular shape from an iron-based material, and are axially separated and press-fitted and held in an externally fitted state on the other axial end side of the outer peripheral surface of the stator core storage portion 10a.
- 1 position restriction part is constituted.
- the first position restricting portion is disposed on the outer side in the axial direction of the region (the storage region of the stator core 7) in which the stator core 7 of the stator core storage portion 10a is stored.
- the housing case 15 is made into a bottomed cylindrical shape including a cylindrical portion 16 and a bottom portion 17 by die casting using, for example, aluminum or an aluminum alloy.
- the inner peripheral surface of the cylindrical portion 16 of the housing case 15 is formed on the first cylindrical surface 16a having the other end side (bottom side) having an inner diameter slightly larger than the outer diameter of the stator core storage portion 10a.
- the inclined surface 16c which ties the 1st cylindrical surface 16a and the 2nd cylindrical surface 16b.
- the bearing 21 a is held at the axial center position of the bottom portion 17.
- the end plate 20 is made, for example, in a disk shape by die casting using aluminum as a material, and a bearing 21b is mounted at the axial center position.
- the stator core 7 around which the stator coil 8 is wound is press-fitted and fixed in the stator core housing portion 10a of the frame 10, and the stator 6 is assembled to the frame 10.
- the first O-ring 13 a is mounted between the pair of position restricting members 12, and the second O-ring 13 b is mounted in the O-ring storage groove 11. Thereby, the axial movement of the first O-ring 13a and the second O-ring 13b is restricted.
- the frame 10 with the stator 6 assembled is inserted into the cylindrical portion 16 of the housing case 15 from the opening side. Therefore, the first O-ring 13a is pressed and clamped between the first cylindrical surface 16a and the outer peripheral surface of the stator core storage portion 10a, and the second O-ring 13b is connected to the second cylindrical surface 16b and the bottom surface of the O-ring storage groove 11. The pressure is held between the two. As a result, the cooling water channel 22 is formed between the outer peripheral surface of the stator core storage portion 10 a of the frame 10 and the inclined surface 16 c of the cylindrical portion 16 of the housing case 15.
- one end of the shaft 5 in the axial direction is press-fitted into a bearing 21 b held by the end plate 20, and the rotor 2 is assembled to the end plate 20.
- the rotor 2 assembled to the end plate 20 is inserted into the cylindrical portion 16 of the housing case 15 from the opening side.
- the other end of the shaft 5 is press-fitted into a bearing 21 a held by the bottom portion 17 of the housing case 15, and then the end plate 20 is attached to the opening end surface of the cylindrical portion 16 of the housing case 15 and the frame attachment portion 10 b of the frame 10.
- the rotating electrical machine 100 is assembled by being fastened and fixed to the respective open end faces.
- the rotating electrical machine 100 assembled in this way is applied to a motor or generator of a transmission of a vehicle such as a hybrid vehicle or an electric vehicle.
- the first position restricting portion is configured. There is no need to cut the other axial end of the outer peripheral surface of the stator core storage portion 10a to form an O-ring storage groove. Therefore, only the outer peripheral surface of the frame mounting portion 10b is subjected to cutting, and the processing cost can be reduced.
- the thickness of the stator core storage portion 10a can be made thinner by the groove depth of the O-ring storage groove than the stator core storage portion in which the O-ring storage groove is formed, thereby reducing the material cost and weight of the frame 10. be able to.
- the frame 10 is manufactured using an iron-based material, the thermal expansion coefficient of the frame 10 can be brought close to the thermal expansion coefficient of the stator core 7 manufactured from a magnetic steel plate. Therefore, when the stator 6 generates heat during operation of the rotating electrical machine 100, it is possible to reduce the generation of stress due to the difference in thermal expansion between the stator 6 and the frame 10.
- FIG. FIG. 2 is a sectional view showing a rotary electric machine according to Embodiment 2 of the present invention.
- the frame 30 is made of, for example, an iron-based material and is formed into a stepped cylindrical shape having a uniform thickness with an outer diameter increasing stepwise toward one end in the axial direction.
- the axial length of the stator core storage portion 30 a is longer than the axial length of the stator core 7.
- the stator 6 is held in the frame 10 by press-fitting and fixing the stator core 7 into the stator core storage portion 30a.
- the pair of position restricting members 31 are made, for example, in an annular shape from an iron-based material, and are axially separated from the outer peripheral surface of the large-diameter portion 30b and press-fitted and held in an externally fitted state, thereby constituting a second position restricting portion. is doing.
- This 2nd position control part is arrange
- the 2nd O-ring 13b is mounted
- the rotating electrical machine 101 according to the second embodiment is configured in the same manner as the rotating electrical machine 100 according to the first embodiment except that the frame 30 is used instead of the frame 10.
- the frame 30 in which the first O-ring 13 a is attached between the pair of position restricting members 12 and the second O-ring 13 b is attached between the pair of position restricting members 31 is attached to the cylindrical portion 16 of the housing case 15. Insert from the opening side. Therefore, the first O-ring 13a is pressed and clamped between the first cylindrical surface 16a and the outer peripheral surface of the stator core storage portion 30a, and the second O-ring 13b is connected to the second cylindrical surface 16b and the outer peripheral surface of the large-diameter portion 30b. The pressure is held between the two. Thereby, the cooling water channel 32 is configured between the outer peripheral surface of the stator core housing portion 30 a of the frame 30 and the inclined surface 16 c of the cylindrical portion 16 of the housing case 15.
- cylindrical portion 16 of the housing case 15 and the frame mounting portion 30c of the frame 30 are fastened and fixed to the end plate 20, respectively.
- the pair of position restricting members 12 are axially separated and press-fitted and held at the other axial end of the outer peripheral surface of the stator core storage portion 30a to constitute the first position restricting portion,
- the pair of position restricting members 31 is press-fitted and held in the axial direction on the outer peripheral surface of the large diameter portion 30b to constitute a second position restricting portion. Therefore, since it is not necessary to cut the outer peripheral surfaces of the stator core storage portion 30a and the large diameter portion 30b to form the O-ring storage groove, cutting is not necessary, and the processing cost can be reduced.
- the thickness of the frame 30 can be reduced, and the material cost and weight of the frame 30 can be reduced. Further, since the frame 30 is formed to have a uniform thickness, the frame 30 can be manufactured by drawing or plate material rounding welding (welding after cylindrical bending), and the processing cost of the frame 30 can be reduced.
- the frame 30 is made of an iron-based material, the thermal expansion coefficient of the frame 30 can be brought close to the thermal expansion coefficient of the stator core 7 made of a magnetic steel plate. Therefore, when the stator 6 generates heat during the operation of the rotating electrical machine 100, it is possible to reduce the generation of stress due to the difference in thermal expansion between the stator 6 and the frame 30.
- the cylindrical portion of the housing case and the frame mounting portion of the frame are fastened and fixed to the end plates, respectively, but the length of the frame mounting portion in the radial direction is extended so that the frame mounting portion is cylindrical.
- the frame mounting portion and the cylindrical portion may be fastened together and fixed to the end plate.
- FIG. 3 is a sectional view showing a rotary electric machine according to Embodiment 3 of the present invention
- FIG. 4 is an enlarged view of a portion A in FIG.
- the frame 10A is a guide formed by forming the inner peripheral surface on the other axial end side of the stator core housing portion 10a into an inclined surface whose inner diameter gradually increases toward the other axial end. Part 23.
- the pair of position restricting members 12 are attached to the stator core storage portion 10 a so as to be positioned radially outside the storage region of the stator core 7.
- the rotating electrical machine 102 according to the third embodiment is configured in the same manner as the rotating electrical machine 100 according to the first embodiment, except that the frame 10A is used instead of the frame 10.
- the pair of position restricting members 12 are axially separated and press-fitted and held at the other axial end of the outer peripheral surface of the stator core storage portion 10a to constitute the first position restricting portion. Therefore, the effect can be obtained as in the first embodiment.
- the frame 10A has a guide portion 23 formed by forming the other axial end side of the inner peripheral surface of the stator core storage portion 10a into a mouth-opening inclined surface. Therefore, the stator core 7 is guided by the inclined surface of the guide portion 23, and further passes through a thin straight portion between the guide portion 23 and the position restricting member 12, so that the axis of the stator core 7 is the stator core storage portion. After being aligned so as to coincide with the axial center of 10a, it is press-fitted into the stator core housing portion 10a.
- the portion between the guide portion 23 of the stator core storage portion 10a and the position regulating member 12 is thin, the rigidity is small. Therefore, the stator core 7 which is guided and aligned by the guide part 23 is press-fitted into a part between the guide part 23 and the position restricting member 12 of the stator core housing part 10a, and the part where the position restricting member 12 is mounted. In the process leading to, further alignment. And the inner peripheral surface of the part from the guide part 23 of the stator core storage part 10a to the position regulating member 12 constitutes a stator core press-fitting face having the aligning action of the stator core 7.
- an increase in press-fit load due to eccentricity between stator core 7 and stator core storage portion 10a is suppressed.
- the pair of position restricting members 12 are mounted on the stator core storage portion 10a so as to be positioned radially outside the storage region of the stator core 7, the other axial end side from the storage region of the stator core 7 of the stator core storage portion 10a.
- the amount of protrusion to can be shortened.
- the axial length of the stator core storage portion 10a can be reduced, the material cost can be reduced, and the rotating electrical machine 102 can be downsized.
- FIG. FIG. 5 is a sectional view showing a rotary electric machine according to Embodiment 4 of the present invention.
- the frame 30 ⁇ / b> A includes a cylindrical stator core storage portion 30 a and a large-diameter large-diameter portion 30 b formed continuously with one end of the stator core storage portion 30 a.
- the frame mounting member 34 is formed in a thick annular shape than the frame 30A, and is joined to one end in the axial direction of the large diameter portion 30b by welding or the like.
- the frame 30 ⁇ / b> A is held by the end plate 20 with the frame attachment member 34 fastened and fixed to the end plate 20.
- the rotating electrical machine 103 according to the fourth embodiment is configured in the same manner as the rotating electrical machine 101 according to the second embodiment, except that the frame 30A is used instead of the frame 30.
- the pair of position restricting members 12 are axially separated and press-fitted and held on the other axial end of the outer peripheral surface of the stator core storage portion 10a to constitute the first position restricting portion, Since the second position restricting portion is configured by press-fitting and holding the position restricting member 31 on the outer peripheral surface of the large diameter portion 30b, the same effect as in the second embodiment can be obtained.
- the thick annular frame mounting member 34 is joined to one end in the axial direction of the large-diameter portion 30b, the stator core storage portion 30a and the large-diameter portion 30b formed with a thin wall.
- the rigidity of the frame 30 ⁇ / b> A having the height increases, and the stator 6 can be firmly held.
- the thickness of the frame 30A can be reduced by increasing the rigidity by joining the frame mounting member 34, the frame 30A is manufactured by drawing, and the frame mounting member 34 is manufactured by forging and cutting. be able to.
- the frame attachment member 34 does not constitute the cooling water channel 32.
- first and second O-rings 13a and 13b are attached to the frame 30A and are not attached to the frame attachment member 34, sealing performance is not required for the joint portion between the frame attachment member 34 and the large diameter portion 30b. Therefore, joining of the frame attachment member 34 and the large diameter portion 30b is simplified.
- the annular frame attachment member 34 is joined to one end in the axial direction of the large-diameter portion 30b.
- the plurality of frame attachment members are spaced apart from each other in the circumferential direction. You may join to one end of an axial direction.
- FIG. 6 is a cross-sectional view showing a rotary electric machine according to Embodiment 5 of the present invention
- FIG. 7 is a cross-sectional view taken along arrow VII-VII in FIG.
- the first position restricting portions are arranged such that resin-made arc-shaped position restricting members 40 are spaced apart from each other on the same circumference on the other axial end side of the outer peripheral surface of the stator core storage portion 10a.
- Four rows arranged at an angular pitch and bonded and fixed to the stator core storage portion 10a are arranged in two rows apart in the axial direction.
- the rotating electrical machine 104 according to the fifth embodiment uses a column in which four position restricting members 40 are spaced apart from each other in the circumferential direction and arranged on the same circumference instead of the pair of annular position restricting members 12.
- the rotating electrical machine 100 is configured in the same manner as the rotating electrical machine 100 according to the first embodiment except that two rows are arranged apart from each other in the direction to constitute the first position restricting portion.
- the rows of the position regulating members 40 that are spaced apart from each other in the circumferential direction and arranged on the same circumference are spaced apart in the axial direction on the other axial end side of the outer peripheral surface of the stator core storage portion 10a. Since the first position restricting portion is arranged in two rows, the same effect as in the first embodiment can be obtained.
- the metal annular position restricting member 12 is press-fitted into the stator core housing portion 10a.
- the mounting ability of the position restricting member 40 to the stator core storage portion 10a is improved, and the yield is increased.
- the rigidity of the stator core storage portion 10a is increased, so that the inner diameter of the stator core 7 press-fitted into the stator core storage portion 10a changes. There was a fear.
- the arc-shaped position restricting member 40 is bonded and fixed to the outer peripheral surface of the stator core storage portion 10a, an increase in rigidity of the stator core storage portion 10a is suppressed and press-fitted into the stator core storage portion 10a. Changes in the inner diameter of the stator core 7 can be suppressed.
- the resin position regulating member 40 is used, but a metal position regulating member may be used.
- FIG. FIG. 8 is a cross-sectional view of a main part of a rotary electric machine according to Embodiment 6 of the present invention.
- the pair of position restricting members 41 are made in an annular shape from, for example, an iron-based material, and are mounted in an externally fitted state, spaced apart in the axial direction on the other axial end side of the outer peripheral surface of the stator core storage portion 10a. Then, from the opposite side of the first O-ring 13a in the axial direction, it is welded and fixed to the stator core storage portion 10a to constitute a first position restricting portion.
- Other configurations are the same as those in the first embodiment.
- the pair of position restricting members 41 are axially separated from the other axial end of the outer peripheral surface of the stator core accommodating portion 10a and are fixed to the stator core accommodating portion 10a so as to be the first position restricting member. Since this part is configured, the same effect as in the first embodiment can be obtained.
- the pair of position restricting members 41 are welded to the stator core storage portion 10a from the opposite side of the first O-ring 13a in the axial direction, the welded portion 42 is separated from the sealing surface of the first O-ring 13a. Excellent sealing performance can be obtained. Further, the inner diameter accuracy of the position restricting member 41 can be lowered, and the cost can be reduced.
- the first position restricting portion is configured by using the pair of annular position restricting members 41.
- the outer periphery of the stator core storage portion 10a is used.
- the first position restricting portion may be configured by using a plurality of arc-shaped metal position restricting members arranged on the same circle and spaced apart from each other. In this case, the plurality of metal position regulating members are welded to the outer peripheral surface of the stator core storage portion 10a from the opposite side of the first O-ring 13a in the axial direction.
- the first position restricting portion is configured by welding the pair of position restricting members 41 to the outer peripheral surface of the stator core accommodating portion 10a
- the pair of annular metal position restricting members may be welded to the frame mounting portion 10b to constitute the second position restricting portion.
- the pair of annular metal position restricting members are welded to the frame attaching portion 10b from the opposite side of the second O-ring 13b in the axial direction.
- FIG. 9 is a sectional view showing a rotary electric machine according to Embodiment 7 of the present invention.
- the position restricting member 12 is press-fitted and held on the other axial end of the outer peripheral surface of the stator core storage portion 10 a, and the first O-ring 13 a is protruded from the position restricting member 12 and the bottom 17 of the housing case 15.
- the stator 17a is attached to the other end side in the axial direction of the outer peripheral surface of the stator core storage portion 10a.
- the first O-ring 13a is sandwiched between the position restricting member 12 and the step portion 17a of the bottom portion 17 of the housing case 15 and attached to the stator core housing portion 10a.
- the configuration is the same as that of the rotating electrical machine 100 according to the first embodiment.
- the first position restricting portion is constituted by the position restricting member 12 and the stepped portion 17a, the same effect as in the first embodiment can be obtained.
- the first position restricting portion is constituted by one position restricting member 12 and the stepped portion 17a projecting from the bottom portion 17 of the housing case 15, the number of parts can be reduced.
- the stepped portion 17a protruding from the bottom portion 17 of the housing case 15 is used as the position restricting member.
- the cylindrical portion 16 of the housing case 15 is positioned relative to the position restricting member 12 in the axial direction.
- the stepped portion may be used as the position restricting member.
Abstract
Description
そして、小径部がOリング収納溝の溝深さ分厚くなり、モータケーシングの材料費および重量が増大するという課題もあった。そこで、小径部のOリング収納溝を除く部位の肉厚を薄くて、モータケーシングの重量を低減することができるが、肉厚を薄くするための切削加工が必要となり、加工費が増大してしまう。
さらに、フレームをOリング収納溝の溝深さ分厚くする必要がないので、フレームの厚さを薄くすることができ、フレームの材料費を削減でき、重量を低減できる。
図1はこの発明の実施の形態1に係る回転電機を示す断面図である。
図2はこの発明の実施の形態2に係る回転電機を示す断面図である。
なお、この実施の形態2による回転電機101は、フレーム10に替えてフレーム30を用いている点を除いて、上記実施の形態1による回転電機100と同様に構成されている。
また、フレーム30が均一な厚みに形成されているので、絞り加工や板材丸め溶接工法(円筒曲げ加工後溶接)を用いてフレーム30を作製でき、フレーム30の加工費を低減できる。
図3はこの発明の実施の形態3に係る回転電機を示す断面図、図4は図3のA部拡大図である。
なお、この実施の形態3による回転電機102は、フレーム10に替えてフレーム10Aを用いている点を除いて、上記実施の形態1による回転電機100と同様に構成されている。
また、一対の位置規制部材12がステータコア7の収納領域の径方向外側に位置するようにステータコア収納部10aに装着されているので、ステータコア収納部10aのステータコア7の収納領域から軸方向他端側への突出量を短くできる。これにより、ステータコア収納部10aの軸方向長さを縮小することができ、材料費を削減できるとともに、回転電機102の小型化が可能となる。
図5はこの発明の実施の形態4に係る回転電機を示す断面図である。
なお、この実施の形態4による回転電機103は、フレーム30に替えてフレーム30Aを用いている点を除いて、上記実施の形態2による回転電機101と同様に構成されている。
フレーム取付部材34は冷却水路32を構成していない。つまり、第1および第2Oリング13a,13bがフレーム30Aに装着され、フレーム取付部材34には装着されていないので、フレーム取付部材34と大径部30bとの接合部にシール性能が要求されない。したがって、フレーム取付部材34と大径部30bとの接合が簡易となる。
図6はこの発明の実施の形態5に係る回転電機を示す断面図、図7は図6のVII-VII矢視断面図である。
なお、この実施の形態5による回転電機104は、一対の円環状の位置規制部材12に替えて、4つの位置規制部材40を周方向に互いに離間させて同一円周上に配列した列を軸方向に離間して2列配置して第1位置規制部を構成している点を除いて、上記実施の形態1による回転電機100と同様に構成されている。
図8はこの発明の実施の形態6に係る回転電機の要部断面図である。
なお、他の構成は、上記実施の形態1と同様に構成されている。
図9はこの発明の実施の形態7に係る回転電機を示す断面図である。
なお、この実施の形態7による回転電機105は、第1Oリング13aが位置規制部材12とハウジングケース15の底部17の段部17aとの間に挟まれてステータコア収納部10aに装着されている点を除いて、上記実施の形態1による回転電機100と同様に構成されている。
Claims (14)
- ステータコア、および上記ステータコアに巻装されたステータコイルを有するステータと、
上記ステータコアを嵌合、固定して上記ステータを内部に保持するフレームと、
上記フレームの外周面に軸方向に離間して装着された第1Oリングおよび第2Oリングと、
上記フレームおよび上記ステータを収納するハウジングケースと、を備え、
上記第1Oリングおよび上記第2Oリングが、上記フレームと上記ハウジングケースとの間に加圧挟持されて、冷却水路が上記フレームと上記ハウジングケースとの間に形成される回転電機において、
上記第1Oリングの軸方向の移動が、上記フレームとは別の部材で構成された位置規制部材により規制されていることを特徴とする回転電機。 - 上記フレームが、均一な厚みに形成されていることを特徴とする請求項1記載の回転電機。
- 上記位置規制部材が、上記フレームの外周面上に軸方向に離間して上記第1Oリングを挟み込むように配置されて上記フレームに固着されていることを特徴とする請求項1又は請求項2記載の回転電機。
- 上記位置規制部材が、上記第1Oリングと軸方向の反対側から上記フレームに溶接、固定されていることを特徴とする請求項3記載の回転電機。
- 上記位置規制部材の少なくとも一方は、上記フレームの外周面の同一円周上に互いに離間して配列されて、上記フレームに固着された複数の部材により構成されていることを特徴とする請求項3又は請求項4記載の回転電機。
- 上記第1Oリングおよび上記位置規制部材が、上記フレームの上記ステータコアの収納領域の径方向外方に位置していることを特徴とする請求項3から請求項5のいずれか1項に記載の回転電機。
- 上記ステータコアの嵌合を案内するガイド部が、上記フレームの内周面の上記第1Oリング側の端部側を口開き状の傾斜面に形成して構成され、
ステータコア圧入嵌合面が、上記フレームの内周面の上記ガイド部と上記位置規制部材との間に位置する領域に形成されていることを特徴とする請求項1から請求項6のいずれか1項に記載の回転電機。 - 上記第1Oリングが、上記位置規制部材と、上記ハウジングケースに突設された段部と、の間に挟まれて、軸方向に位置決めされていることを特徴とする請求項1又は請求項2記載の回転電機。
- 上記位置規制部材が、上記第1Oリングと軸方向の反対側から上記フレームに溶接、固定されていることを特徴とする請求項8記載の回転電機。
- 上記位置規制部材は、上記フレームの外周面の同一円周上に互いに離間して配列されて、上記フレームに固着された複数の部材により構成されていることを特徴とする請求項8又は請求項9記載の回転電機。
- フレーム取付部が上記フレームの上記第2Oリング側の端部に一体に形成されていることを特徴とする請求項1から請求項10のいずれか1項に記載の回転電機。
- 上記第2Oリングが上記フレーム取付部の外周面に装着されていることを特徴とする請求項11記載の回転電機。
- フレーム取付部材が、上記フレームの上記第2Oリング側の端部に接合されていることを特徴とする請求項1から請求項10のいずれか1項に記載の回転電機。
- 上記第2Oリングが、上記フレームとは別の部材により軸方向の移動を規制されていることを特徴とする請求項1から請求項13のいずれか1項に記載の回転電機。
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