WO2019171535A1 - 回転電機及び回転電機の製造方法 - Google Patents
回転電機及び回転電機の製造方法 Download PDFInfo
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- WO2019171535A1 WO2019171535A1 PCT/JP2018/008993 JP2018008993W WO2019171535A1 WO 2019171535 A1 WO2019171535 A1 WO 2019171535A1 JP 2018008993 W JP2018008993 W JP 2018008993W WO 2019171535 A1 WO2019171535 A1 WO 2019171535A1
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- WIPO (PCT)
- Prior art keywords
- partition plate
- housing
- cover
- notch
- protrusion
- Prior art date
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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 and a method for manufacturing the rotating electrical machine.
- Some rotary electric machines cool a stator from the outer periphery by providing a flow path in a housing for fixing the stator and flowing a coolant such as cooling water through the flow path.
- a housing that accommodates a rotating electrical machine is provided with a refrigerant flow path along the outer periphery, and the refrigerant flow path extends in the axial direction and extends in the circumferential direction.
- a partition portion for partitioning the flow path is provided.
- the partition portion is provided integrally with the housing.
- the partition portion is provided in a configuration in which a flow path is provided between the housing and a cover attached to the outside of the housing.
- the partition portion is provided in a configuration in which the part is provided as a separate body. In such a configuration, it is preferable to dispose the partition portion in the correct direction in the axial direction, but there is a risk that a reverse assembly in which the partition portion is disposed in the reverse axial direction may occur.
- This invention was invented in order to solve such a problem, and it aims at suppressing the reverse assembly of the partition plate in the axial direction in the housing of the rotating electrical machine.
- a rotating electrical machine is a rotating electrical machine that can be cooled by flowing a refrigerant to the outer periphery, and is a stator and a cylindrical member that houses the stator on the inner periphery, and is recessed in the circumferential direction on the outer periphery.
- a housing having an annular first projecting portion and a second projecting portion projecting in the radial direction and facing the axial direction through the channel groove on the outer periphery, and the outer periphery of the housing A cover that contacts the first protrusion and the second protrusion, and a first notch provided in the first protrusion and a second end provided in the second protrusion.
- a partition plate arranged in the two cutouts and partitioning the flow channel groove in the axial direction.
- the first cutout is wider in the circumferential direction than the second cutout.
- One end of the partition plate is formed to be substantially equal in width to the first cutout, and the other end is formed to be substantially equal in width to the second cutout.
- FIG. 1 is a perspective view of a motor housing according to the first embodiment.
- FIG. 2 is an exploded view of the housing.
- 3 is a cross-sectional view of the motor in the radial direction along AA in FIG. 4 is a cross-sectional view of the motor in the axial direction along BB in
- FIG. 5A is a cross-sectional view of the housing taken along the line CC of FIG.
- FIG. 5B is a configuration diagram of the partition plate.
- FIG. 6A is an axial cross-sectional view of a portion of the cover.
- FIG. 6B is an axial sectional view of the partition plate.
- FIG. 7A is a diagram showing a partition plate mounting step.
- FIG. 7B is a cross-sectional view of the motor in the axial direction along DD in FIG. 7A.
- FIG. 8 is a diagram showing a partition plate mounting step.
- FIG. 9 is a diagram illustrating a rotation process.
- FIG. 10 is a diagram illustrating a cover mounting process.
- FIG. 11 is a diagram illustrating a cover mounting process.
- FIG. 12 is a diagram illustrating a cover mounting process of a comparative example.
- FIG. 13 is a diagram illustrating a cover mounting process of a comparative example.
- FIG. 14 is a cross-sectional view of a housing and a partition plate in a comparative example.
- FIG. 15A is a cross-sectional view of the partition plate of the second embodiment.
- FIG. 15A is a cross-sectional view of the partition plate of the second embodiment.
- FIG. 15B is a configuration diagram showing the partition plate from the circumferential direction.
- FIG. 16 is a cross-sectional view of the motor housing.
- FIG. 17 is a diagram illustrating a cover mounting process of a comparative example.
- FIG. 18 is a diagram illustrating a cover mounting process of a comparative example.
- the motor (rotary electric machine) in the embodiment of the present invention will be described.
- FIG. 1 is a perspective view of a motor 100 according to the first embodiment.
- the motor 100 includes a housing 10 that houses a rotor and a stator (both not shown in FIG. 1), and a cylindrical cover 20 that is press-fitted into the housing 10.
- the housing 10 is provided with a flow path groove 11 that is provided by cutting the outer periphery into a uniform width in the circumferential direction.
- the channel groove 11 is provided with a rod-shaped partition plate 30 so as to block a part of the channel groove 11.
- the cover 20 has a cylindrical cover main body 21, and two openings (not shown) arranged in the circumferential direction are provided on the outer peripheral surface of the cover main body 21.
- a cylindrical inflow port 22 and an outflow port 23 are provided so as to be connected to these openings.
- FIG. 2 is an exploded perspective view of the housing 10 of the motor 100 shown in FIG.
- the housing 10 is a cylindrical member made of metal or the like, and an annular channel groove 11 having a uniform width is formed along the outer periphery by machining on the outer peripheral surface.
- the first projecting portion 12 ⁇ / b> A and the second projecting portion 12 ⁇ / b> B that project in an annular shape facing each other in the axial direction via the flow channel groove 11 are provided.
- the first protrusion 12A located in the back right side of the drawing in the drawing has a higher height from the flow channel 11 to the outside in the radial direction than the second protrusion 12B located on the left front side of the drawing. .
- a flange-like stopper 13 having a diameter larger than that of the first protrusion 12A is provided on the outer side in the axial direction of the first protrusion 12A (on the right back side in the drawing).
- Each of the first protrusion 12A and the second protrusion 12B is provided with an annular first seal groove 14A and a second seal groove 14B on the outer peripheral surface.
- Each of the first protrusion 12A and the second protrusion 12B is provided with a first notch 15A and a second notch 15B so as to be opposed and recessed in the axial direction.
- the first notch 15A and the second notch 15B are configured so that the partition plate 30 can be accommodated between them.
- the first notch 15A and the second notch 15B are configured such that the opposing surfaces in the axial direction are separated by the length of the partition plate 30 in the longitudinal direction.
- the second cutout 15B is configured to have a narrower circumferential width than the first cutout 15A.
- FIG. 3 is a cross-sectional view of the motor 100 in the radial direction along AA in FIG. This figure shows a cross-sectional view in the radial direction at a location where the flow channel 11 is provided.
- a stator 40 is fixed in the housing 10, and a flow path groove 11 is provided between the housing 10 and the cover body 21 so as to surround the housing 10 in the circumferential direction.
- the partition plate 30 is attached to the housing 10 between the inlet 22 and the outlet 23 in the circumferential direction. Therefore, the refrigerant flowing from the inlet 22 provided in the cover body 21 flows through the flow channel 11 along the outer periphery of the housing 10 and is discharged from the outlet 23. Since the partition plate 30 prevents the flow of the refrigerant in the circumferential direction, the refrigerant flows counterclockwise in the drawing in the flow channel groove 11. In this way, the stator 40 can be cooled by the refrigerant flowing on the outer periphery of the housing 10.
- FIG. 4 is a cross-sectional view in the axial direction of the motor 100 taken along BB in FIG.
- stator 40 fixed in the housing 10 is shown.
- motor 100 is shown such that the first cutout 15A and the second cutout 15B are arranged in the upper part of the drawing.
- An annular first O-ring 16A and a second O-ring 16B are provided in the first seal groove 14A of the first protrusion 12A and the second seal groove 14B of the second protrusion 12B, respectively. .
- the first protrusion 12A located at the right end of the flow channel 11 in the figure is higher in the radial direction than the second protrusion 12B located at the left end of the flow groove 11 (the flow groove 11 is The height in the upper part of the figure when the reference is used).
- a stopper 13 having a larger diameter than the first protrusion 12A is provided at the right end of the first protrusion 12A in the drawing. The stopper 13 restricts the movement of the cover 20 in the axial direction.
- the partition plate 30 is a plate member on a prism, and is arranged between the first cutout 15A and the second cutout 15B with the longitudinal direction along the axial direction.
- the partition plate 30 is composed of two plate portions, a first plate portion 31A and a second plate portion 31B, and the first plate end portion 32A that is the end portion of the first plate portion 31A is a second plate. It is configured to be higher in the radial direction than the second plate end portion 32B which is an end portion of the portion 31B.
- the partition plate 30 has a slope 33 in the vicinity of the contact surface between the first plate portion 31A and the second plate portion 31B in the first plate portion 31A. In the circumferential direction (the front and back direction in the drawing), the first plate end portion 32A is configured to be wider than the second plate end portion 32B.
- the cover 20 is configured to have substantially the same outer diameter in the axial direction.
- the second cover end 24 ⁇ / b> B that contacts the small-diameter second protrusion 12 ⁇ / b> B of the housing 10 is formed thicker than the first cover end 24 ⁇ / b> A that contacts the large-diameter first protrusion 12 ⁇ / b> A.
- the second cover end 24B has a smaller inner diameter than the first cover end 24A.
- the first cover end 24A having a large inner diameter is in contact with the first protrusion 12A
- the second cover end 24B having a small inner diameter is in contact with the second protrusion 12B.
- a tapered portion 25 is formed on the inner peripheral surface of the cover 20 so as to come into contact with the slope 33 of the partition plate 30.
- FIG. 5A is a cross-sectional view of the housing 10 taken along the line CC of FIG.
- a cross section of a portion of the housing 10 where the first notch 15A and the second notch 15B are provided is shown.
- the horizontal direction indicates the axial direction
- the vertical direction in the figure indicates the circumferential direction.
- the first O-ring 16A and the second O-ring 16B provided in the first seal groove 14A and the second seal groove 14B are omitted for readability.
- first protrusion 12 ⁇ / b> A On the right side of the flow channel 11, a cross section of the first protrusion 12 ⁇ / b> A and the stopper 13 continuous in the axial direction is shown. Further, the first protrusion 12 ⁇ / b> A is provided with a first notch 15 ⁇ / b> A that extends in the axial direction and communicates with the flow channel groove 11.
- the second protrusion 12B is provided on the left side of the flow channel 11. Further, the second protrusion 12B is provided with a second notch 15B that extends in the axial direction and communicates with the flow channel groove 11.
- the first notch 15A and the second notch 15B are arranged so that their centers coincide with the axial direction.
- the width D A of the circumferential direction of the first notch 15A is wider than the width D B of the circumferential direction of the second notch 15B.
- FIG. 5B is a configuration diagram of the partition plate 30.
- worn is shown.
- the left-right direction shows the axial direction of the motor 100
- the up-down direction in the figure shows the circumferential direction.
- the partition plate 30 is configured by a first plate portion 31A including a first plate end portion 32A and a second plate portion 31B including a second plate end portion 32B.
- the circumferential width of the first plate end 32A is D A
- the circumferential width of the second plate end 32B is narrower D B than D A.
- the first plate portion 31A is longer in the axial direction than the second plate portion 31B.
- the partition plate 30 has the slope 33 in the outer peripheral surface (surface of this figure side) which contact
- the slope 33 is configured to incline downward from the first plate end portion 32A toward the second plate end portion 32B.
- the first plate end portion 32A is fitted into the first notch 15A shown in FIG. 4A, and the second plate end portion 32B is Fits into the two cutouts 15B.
- the angle ⁇ of the slope 33 shown in FIG. 6B with respect to the upper surface of the second plate end portion 32B is preferably substantially equal to the angle ⁇ of the tapered portion 25 of the cover 20 shown in FIG. 6A.
- the stator 40 is mounted on the inner diameter of the housing 10.
- FIGS. 7A and 7B and FIG. 8 are diagrams showing a mounting process of the partition plate 30.
- FIG. 7A and 7B and FIG. 8 are diagrams showing a mounting process of the partition plate 30.
- the housing 10 is shown from the outer peripheral side.
- 7B is a cross-sectional view taken along the line DD of FIG. 7A. Note that the partition plate 30 is not shown in FIG. 7A for readability.
- the first notch 15A and the second notch 15 of the housing 10 in a state where the first O-ring 16A is installed in the first seal groove 14A and the second O-ring 16B is installed in the second seal groove 14B.
- a guide 50 including a first guide 50A and a second guide 50B is mounted in the vicinity of the notch 15B from the outer peripheral side.
- the first guide 50A is disposed on the first protrusion 12A as shown in FIG. 7B. At the same time, the first guide 50A is provided with its right side surface in contact with the inner surface of the stopper 13 and with its left side surface slightly to the right of the housing 10 from the right end of the first cutout 15A.
- the 2nd guide 50B is arrange
- the second guide 50B is provided such that the right side surface is positioned slightly to the left of the side of the second notch 15B.
- the side surfaces of the first guide 50 ⁇ / b> A and the second guide 50 ⁇ / b> B that are opposed to each other on the flow channel 11 side are configured so that the width increases toward the housing 10. For this reason, the distance between the opposing side surfaces of the first guide 50 ⁇ / b> A and the second guide 50 ⁇ / b> B via the flow channel 11 becomes narrower toward the housing 10.
- the opposing surfaces of the first guide 50A and the second guide 50B are provided so as to be continuous with the side surface of the first notch 15A and the side surface of the second notch 15B at a location in contact with the housing 10.
- FIG. 8 is a diagram illustrating a mounting process of the partition plate 30 after FIGS. 7A and 7B.
- FIG. 8 is a cross-sectional view corresponding to FIG. 7B, and shows a state immediately before the partition plate 30 is fitted into the flow channel groove 11.
- the opening end portion of the first notch 15A on the outer peripheral surface of the first protrusion 12A that is, the right side surface of the end surface portion of the first notch 15A.
- a chamfering process is performed on the side extending in the front and back direction of the paper to form a chamfered portion 18A.
- the partition plate 30 in the state of being fitted in the first notch 15A, the end of the bottom surface facing the flow channel groove 11, that is, the front side of the sheet facing the first notch 15A of the sides constituting the bottom surface.
- chamfering is performed to form a chamfered portion 34A.
- the partition plate 30 even when the partition plate 30 is displaced in the axial direction and rides on the first projecting portion 12A, the chamfered portion 18A and the chamfered portion 34A are in the first projecting portion 12A and the portion where the partition plate 30 contacts. In the case of contact, the partition plate 30 is guided to the first notch 15A. In the radial direction, when the total height of the chamfered portion 18A of the partition plate 30 and the chamfered portion 34A of the housing 10 is larger than the depth of the flow path groove 11, reverse assembly occurred as described later. In this case, the partition plate 30 does not ride on the housing 10.
- the sum of the heights of the chamfered portion 18 ⁇ / b> A of the partition plate 30 and the chamfered portion 34 ⁇ / b> A of the housing 10 needs to be smaller than the depth of the flow channel groove 11.
- the second projecting portion 12B of the housing 10 and the partition plate 30 face each other in a state immediately before the partition plate 30 is fitted into the flow channel groove 11.
- a chamfered portion 18B and a chamfered portion 34B are configured on each side (side extending in the front and back direction on the paper surface). Therefore, even when the partition plate 30 rides on the second projecting portion 12B, when the chamfered portion 18B and the chamfered portion 34B are in contact with each other on the side where the second projecting portion 12B and the partition plate 30 contact, The plate 30 is guided to the second notch 15B.
- the chamfered portion may be formed not only at the corner portion of the side extending in the circumferential direction but also at the corner portion of the side extending in the axial direction. That is, in the housing 10, a chamfered portion is formed at the opening end of the first notch 15A and the opening end of the second notch 15B of the second protrusion 12B on the outer peripheral surface of the first protrusion 12A. Also good. Further, in the partition plate 30, a chamfered portion may be formed at an end portion of the surface facing the flow channel groove 11 (all sides constituting the facing surface). By doing in this way, even when the partition plate 30 is displaced not only in the axial direction but also in the circumferential direction, it is guided to the first notch 15A and the second notch 15B.
- FIG. 9 is a diagram showing a rotation process of the housing 10. As shown in this figure, in the housing 10 to which the partition plate 30 is attached, the second projecting portion 12B is vertically upward and the first projecting portion with the partition plate 30 fixed by the fixing device 60. The housing 10 is rotated so that the side of the stopper 12A and the stopper 13 are downward, and the housing 10 is arranged so that the axial direction thereof is vertical.
- FIGS. 10 and 11 are diagrams showing a mounting process of the cover 20.
- the partition plate 30 fitted into the first notch 15 ⁇ / b> A and the second notch 15 ⁇ / b> B of the housing 10 is released from being fixed by the fixing device 60. Then, the cover 20 starts to move toward the housing 10 above the housing 10.
- the upper part of the partition plate 30 is covered with the cover 20, so that the partition plate 30 is prevented from dropping from the housing 10 by the cover 20. Thereafter, when the end of the cover 20 comes into contact with the stopper 13 and the cover 20 is moved so as to cover the entire outer periphery of the housing 10, the mounting process of the cover 20 ends. Thus, the motor 100 as shown in FIG. 4 etc. is assembled.
- Reverse assembly means mounting the partition plate 30 in the opposite direction in the axial direction.
- the partition plate 30 in the circumferential direction, has a first plate end 32A wider than the second plate end 32B, and the housing 10 has a first notch 15A having a second notch. Narrower than 15B.
- the reverse assembly of the partition plate 30 can be detected at an early stage by providing the rotation step shown in FIG.
- a mechanism for detecting such a reverse combination will be described.
- FIGS. 12 and 13 are diagrams showing a process of attaching the cover 20 of the comparative example.
- reverse assembly is performed such that the partition plate 30 is disposed in the opposite direction in the axial direction.
- the partition plate 30 is reversely assembled in the axial direction, the first plate end portion 32A is disposed on the side where the second notch 15B of the flow channel 11 is provided, and the second plate The end portion 32B is disposed on the side of the flow channel 11 where the first notch 15A is provided.
- FIG. 12 shows an example in which the first plate end portion 32A is fitted into the flow channel groove 11 and the second plate end portion 32B rides on the first protruding portion 12A. Since the first plate end 32A is wider than the second cutout 15B, the first plate end 32A does not fit into the second cutout 15B.
- the first plate end portion 32A fitted into the flow channel groove 11 is higher than the second projecting portion 12B at the radial height (the horizontal direction in the figure). Therefore, when the cover 20 is mounted, the cover 20 comes into contact with the first plate end portion 32A from above, and a downward external force acts on the partition plate 30.
- the partition plate 30 is not in a state where the second plate end portion 32B rides on the first projecting portion 12A and is locked to something below. Therefore, the partition plate 30 is dropped downward from the channel groove 11 due to external force and gravity from above. In this way, the reverse assembly of the partition plate 30 can be detected at an early stage.
- Such a drop-off of the partition plate 30 may occur at the timing when the fixing of the partition plate 30 is released by the fixing device 60 after the rotation process shown in FIG.
- FIG. 13 shows an example in which the first plate end portion 32A rides on the flow channel 11 and the second plate end portion 32B fits into the first cutout 15A.
- the second plate end portion 32B is configured to be narrower in the circumferential direction than the first cutout 15A, and the second plate end portion 32B may be fitted into the first cutout 15A.
- the cover 20 When the cover 20 is attached to the housing 10, the cover 20 contacts the first plate end portion 32 ⁇ / b> A riding on the second projecting portion 12 ⁇ / b> B in the circumferential direction. Therefore, when reversely assembled as shown in FIG. 13, the cover 20 cannot be mounted, and the reverse assembly of the partition plate 30 can be detected at an early stage.
- the partition plate 30 is configured such that the first plate end portion 32A that is one end in the axial direction is wider in the circumferential direction than the second plate end portion 32B that is the other end.
- the first plate end portion 32A is formed with substantially the same width as the first cutout 15A
- the second plate end portion 32B is formed with substantially the same width as the second cutout 15B. That is, the first cutout 15A is configured to be wider than the second cutout 15B.
- the partition plate 30 is configured such that the first plate end portion 32A that is one end in the axial direction is wider in the circumferential direction than the second plate end portion 32B that is the other end.
- the first plate end portion 32A is formed with substantially the same width as the first cutout 15A
- the second plate end portion 32B is formed with substantially the same width as the second cutout 15B. That is, the first cutout 15A is configured to be wider than the second cutout 15B.
- the cover 20 is attached to the housing 10 from the end on the second protruding portion 12B side, which is the side where the stopper 13 is not provided, toward the first protruding portion 12A.
- the cover 20 is attached to the housing 10 from the second projecting portion 12B side. Inevitably, it collides with the first plate end 32A riding on the second projecting portion 12B, so that the reverse assembly can be detected.
- the first plate end portion 32A rides on the second protruding portion 12B, and the second plate end portion 32B may be in a state of being fitted into the first notch 15A. .
- the cover 20 is mounted from the first protruding portion 12A side where the first notch 15A is provided.
- the reverse assembly cannot be detected when the cover 20 covers the first projecting portion 12 ⁇ / b> A, and the cover 20 cannot be attached when the cover 20 covers most of the flow path groove 11, and the reverse assembly is not performed. Since it is detected, the time until detection becomes long.
- the partition plate 30 has a second plate end 32B in contact with the first notch 15A on the inner peripheral surface, and the first plate end 32A is the second protrusion 12B. And in contact with the cover 20 in the vicinity of the center in the axial direction on the outer peripheral surface.
- the cover 20 and the partition plate 30 are deformed when such stress is applied, and when the cover 20 is deformed, it is difficult to reuse the cover 20 and the partition plate 30.
- the reverse assembly can be detected before the cover 20 covers the end of the partition plate 30, the assembly can be detected at an early stage, and the cover 20 and the partition plate 30 can be detected. Can be reused.
- the housing 10 includes the chamfered portions 18A and 18B at locations where the partition plate 30 contacts the partition plate 30 immediately before the partition plate 30 is fitted into the flow channel groove 11.
- a chamfer 18A is formed on the end face of the first cutout 15A on the side surface of the first protrusion 12A
- a chamfer 18B is formed on the end face of the second cutout 15B on the side face of the second protrusion 12B.
- chamfered portions 34 ⁇ / b> A and 34 ⁇ / b> B are formed at locations where the partition plate 30 contacts the housing 10 immediately before the partition plate 30 is fitted into the flow path groove 11.
- the chamfered portion 34A is formed on the side that forms the surface facing the housing 10 in the first protruding portion 12A of the partition plate 30, and the side that forms the surface that faces the housing 10 in the second protruding portion 12B.
- a chamfer 34B is formed.
- the chamfered portions 18A and 18B are configured in the housing 10 and the chamfered portions 34A and 34B are configured in the partition plate 30, so that the chamfering is performed even when the position when inserting the partition plate 30 is shifted.
- the partition plate 30 is guided by the chamfered portions 18A and 18B and the chamfered portions 34A and 34B immediately before the partition plate 30 is fitted into the channel groove 11.
- the partition plate 30 can be fitted smoothly.
- the first projecting portion 12A is configured to be higher in the radial direction than the second projecting portion 12B, and the partition plate 30 extends from the first plate end 32A to the second plate end on the outer peripheral surface.
- a slope 33 that decreases in the radial direction toward the portion 32 ⁇ / b> B is provided, and an inner surface of the cover 20 has a tapered portion 25 that contacts the slope 33.
- FIG. 14 shows the configuration of the partition plate 30 in the comparative example.
- the partition plate 30 is not provided with the slope 33.
- the cover 20 is provided with a tapered portion 25 closer to the second cover end 24 ⁇ / b> B than the partition plate 30 in order to contact the partition plate 30 on a wider surface. Therefore, it is necessary to configure the length of the second protruding portion 12B in the axial direction to be longer by the length of the tapered portion 25.
- the partition plate 30 is configured such that the first plate end 32A is higher than the second plate end 32B, and the first plate end 32A and the second plate end.
- the slope 33 is provided between 32B. Since the cover 20 has the taper portion 25 at a position facing the slope 33 of the partition plate 30, the taper portion 25 is not provided in the first projecting portion 12A as in the comparative example of FIG. It is established in. Therefore, it is suppressed that the taper part 25 is provided in the 2nd protrusion part 12B like a comparative example, and, thereby, the groove width of the flow path groove 11 becomes difficult to become short.
- the manufacturing direction of the motor 100 of the first embodiment there are an arrangement step of arranging the partition plate 30 in the housing 10 and a mounting step of the cover 20.
- the cover 20 is mounted on the housing 10 from the second protrusion 12B side.
- the first plate end portion 32A may be fitted into the flow channel groove 11, and the second plate end portion 32B may ride on the first protruding portion 12A.
- the first plate end 32A fitted into the flow channel groove 11 is higher than the second protrusion 12B at the circumferential height, so when the cover 20 is attached, The cover 20 comes into contact with the first plate end portion 32 ⁇ / b> A from above, and a stress acts on the partition plate 30 downward. Since the partition plate 30 is not in a state where the second plate end portion 32B rides on the first projecting portion 12A in the lower portion and is not locked to anything, the partition plate 30 is subjected to stress from above and the action of gravity. Drops downward from the channel groove 11. In this way, the reverse assembly of the partition plate 30 can be detected.
- FIG. 15A is a cross-sectional view of the partition plate 30 of the second embodiment. This figure corresponds to FIG. 4 in a state where it is fitted in the flow channel groove 11, wherein the horizontal direction indicates the axial direction, and the vertical direction in the figure indicates the circumferential direction.
- FIG. 15B is a diagram showing the partition plate 30 from the outer peripheral side. This figure corresponds to FIG. 5B. In this figure, the horizontal direction indicates the axial direction, and the vertical direction in the figure indicates the circumferential direction.
- the partition plate 30 is configured such that the second plate portion 31B is thinner than the first plate portion 31A in the radial direction.
- the slope 33 includes a first slope 33A provided on the outer circumferential surface and a second slope 33B on the inner circumferential surface in the second plate portion 31B.
- the second plate portion 31B is connected to the first plate portion 31A via the first slope 33A and the second slope 33B.
- the partition plate 30 is configured so that the inner peripheral surface and the outer peripheral surface are vertically symmetrical with respect to the axial center. That is, the first slope 33A provided on the outer peripheral surface and the second slope 33B provided on the inner peripheral surface are provided at corresponding positions.
- FIG. 15B shows the first slope 33A provided on the second plate end portion 32B on the side in contact with the first plate end portion 32A.
- FIG. 16 is a cross-sectional view of the motor 100 of the second embodiment.
- FIG. 16 corresponds to FIG. 4, and the horizontal direction indicates the axial direction, and the vertical direction in the figure indicates the radial direction.
- the second slope 33B is disposed in the second notch 15B.
- the second projecting portion 12 ⁇ / b> B includes a slope 17 that increases toward the flow channel groove 11 at an end portion that contacts the flow channel groove 11. In a state where the cover 20 is mounted, the slope 17 contacts the tapered portion 25 of the cover 20.
- FIG. 17 and FIG. 18 are diagrams showing a mounting process of the cover 20 of the comparative example.
- reverse assembly is performed such that the partition plate 30 is disposed in the opposite direction in the axial direction.
- FIGS. 12 and 13 correspond to FIGS. 12 and 13. That is, in these drawings, the partition plate 30 is reversely assembled in the axial direction, the first plate end portion 32A is disposed on the side where the second notch 15B of the flow channel 11 is provided, and the second plate end. The portion 32B is disposed on the side of the flow channel 11 where the second notch 15B is provided.
- the first plate end portion 32A is fitted into the flow channel groove 11, and the second plate end portion 32B rides on the first projecting portion 12A.
- the first plate end 32A that fits into the flow channel groove 11 is higher than the second protrusion 12B at the circumferential height, so that when the cover 20 is attached, Stress acts on the partition plate 30 downward. Since the partition plate 30 is not in a state where it is locked to anything below, the partition plate 30 falls down from the flow channel groove 11 due to stress and gravity from above. In this way, the reverse assembly of the partition plate 30 can be detected.
- the first plate end portion 32A rides on the flow channel 11 and the second plate end portion 32B is fitted in the first cutout 15A.
- the cover 20 contacts the first plate end portion 32 ⁇ / b> A riding on the second protrusion 12 ⁇ / b> B in the circumferential direction. Therefore, the cover 20 cannot be attached, and the reverse assembly of the partition plate 30 can be detected.
- the partition plate 30 is configured so that the outer peripheral surface and the inner peripheral surface are symmetrical with respect to the central axis of the partition plate 30, the first slope 33A on the outer peripheral surface side and the first slope 33A.
- a second slope 33B is also provided at the corresponding position on the inner peripheral surface side. Therefore, not only the reverse assembly in the axial direction is suppressed as in the first embodiment, but even if the reverse assembly occurs in the radial direction (vertical direction), the second slope 33B is located on the outer peripheral surface side and the cover 20 Since it contacts with the taper part 25, reverse assembling in the radial direction can be suppressed.
- the second slope 33B is disposed in the second notch 15B when the partition plate 30 is mounted on the housing 10.
- a gap is formed between the second slope 33B and the bottom surface of the second notch 15B. If the second slope 33B is provided in the channel groove 11 instead of the second notch 15B, the refrigerant flows between the second slope 33B and the bottom surface of the channel groove 11. Become.
- the clearance gap comprised by the 2nd slope 33B exists in the 2nd notch 15B, the partition of the refrigerant
- the motor 100 demonstrated using the example which is an electric motor, it is not restricted to this.
- the motor 100 instead of the motor 100, it may be configured as a generator that generates electric power by being driven by an external force.
Abstract
Description
図1は、第1実施形態のモータ100の斜視図である。
第1実施形態においては、仕切り板30において外周面においてのみスロープ33が設けられる例について説明した。第2実施形態においては、仕切り板30において、外周面だけでなく内周面においてもスロープ33が設けられる例について説明する。
Claims (9)
- 外周に冷媒を流すことにより冷却可能な回転電機であって、
ステータと、
内周に前記ステータを収容する筒状の部材であって、外周において周方向に凹むように形成される流路溝と、外周において前記流路溝を介して軸方向に対向するとともに径方向に突出する環状の第1突出部及び第2突出部と、を有するハウジングと、
前記ハウジングの外周を覆い、前記第1突出部、及び、前記第2突出部と接触するカバーと、
一端が前記第1突出部に設けられる第1切り欠きに配置されるとともに、他端が前記第2突出部に設けられる第2切り欠きに配置されて、前記流路溝を軸方向に仕切る仕切り板と、を有し、
前記第1切り欠きは、周方向の幅が前記第2切り欠きよりも広く、
前記仕切り板は、前記一端が前記第1切り欠きと略等幅に形成され、前記他端が前記第2切り欠きと略等幅に形成される、回転電機。 - 請求項1に記載の回転電機であって、
前記カバーは、前記第2突出部の側の端部から、前記ハウジングに挿入される、回転電機。 - 請求項1または2に記載の回転電機であって、
前記ハウジングは、前記第1突出部の側の端部に前記カバーの外周に沿った移動を規制するストッパを有する、回転電機。 - 請求項1から3のいずれか1項に記載の回転電機あって、
前記ハウジングは、前記第1突出部の外周面における前記第1切り欠きの開口端部、及び、前記第2突出部の外周面における前記第2切り欠きの開口端部に面取り部を備え、
前記仕切り板は、前記流路溝と対向する面の端部に面取り部を備える、回転電機。 - 請求項1から4のいずれか1項に記載の回転電機あって、
前記第1突出部は、前記第2突出部よりも径方向に高く構成され、
前記仕切り板は、外周面に、前記一端から前記他端へと向かって径方向に低くなるスロープを有し、
前記カバーは、前記仕切り板の前記スロープと対向する位置に、径方向に低くなるテーパ部を有する、回転電機。 - 請求項5に記載の回転電機あって、
前記仕切り板は、軸中心に対して前記外周面及び内周面が対称に構成される、回転電機。 - 請求項6に記載の回転電機あって、
前記仕切り板は、前記ハウジングに装着された状態において、前記スロープが前記第2切り欠き内に配置される、回転電機。 - 請求項1から7のいずれか1項に記載の回転電機の製造方法であって、
前記仕切り板を、前記ハウジングに配置する配置ステップと、
前記カバーを前記ハウジングに前記他端から装着する装着ステップと、を有し、
前記装着ステップにおいて、前記カバーは、前記第2突出部から前記第1突出部に向って前記ハウジングに装着される、回転電機の製造方法。 - 請求項8に記載の回転電機の製造方法であって、
前記装着ステップにおいて、前記ハウジングは、前記他端が上方となるように配置される、
回転電機の製造方法。
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