WO2022196320A1 - 部品 - Google Patents

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Publication number
WO2022196320A1
WO2022196320A1 PCT/JP2022/008240 JP2022008240W WO2022196320A1 WO 2022196320 A1 WO2022196320 A1 WO 2022196320A1 JP 2022008240 W JP2022008240 W JP 2022008240W WO 2022196320 A1 WO2022196320 A1 WO 2022196320A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
catch tank
groove portion
oil
tunnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/008240
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
祐樹 田中
豊 奥村
悠介 鈴木
洋治郎 望月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
JATCO Ltd
Original Assignee
Nissan Motor Co Ltd
JATCO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd, JATCO Ltd filed Critical Nissan Motor Co Ltd
Priority to US18/548,386 priority Critical patent/US20240235331A9/en
Priority to CN202280021470.9A priority patent/CN116998093A/zh
Priority to EP22769548.3A priority patent/EP4311082B1/en
Priority to JP2023506933A priority patent/JP7526354B2/ja
Publication of WO2022196320A1 publication Critical patent/WO2022196320A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0457—Splash lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0483—Axle or inter-axle differentials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears 
    • F16H57/0495—Gearings with spur or bevel gears  with fixed gear ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
    • F16N31/02—Oil catchers; Oil wipers
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/73—Planetary gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines

Definitions

  • the present invention relates to parts.
  • Patent Document 1 discloses a structure for supplying oil from a nozzle to a tunnel portion.
  • the present invention has been made in view of such problems, and an object of the present invention is to suppress the amount of oil leaking from between the catch tank portion and the tunnel portion.
  • the first case portion has a tunnel portion having an open end that opens toward the axial direction
  • the second case portion has a catch tank portion that opens upward. and the first case portion and the second case portion are arranged to face each other so that the bottom portion of the tunnel portion and the bottom portion of the catch tank portion are connected.
  • the amount of oil leaking from between the catch tank portion and the tunnel portion can be suppressed.
  • FIG. 1 is a schematic external view showing a power transmission device according to this embodiment.
  • FIG. 2 is a schematic configuration diagram showing a power transmission device.
  • FIG. 3 is a schematic configuration diagram showing a power transmission device.
  • FIG. 4 is a rear view showing the first case portion.
  • FIG. 5 is a front view showing the second case portion.
  • FIG. 6 is a front view showing the second case portion with the guide member removed.
  • FIG. 7 is a schematic configuration diagram showing the essential parts of the case member.
  • FIG. 8 is a schematic configuration diagram showing the essential parts of the case member with the guide member removed.
  • FIG. 9 is a perspective view showing a guide member.
  • FIG. 1 is a schematic external view showing a power transmission device 1 according to this embodiment.
  • FIG. 2 is a schematic configuration diagram showing the power transmission device 1. As shown in FIG. Note that the main part of the power transmission device 1 is shown in cross section.
  • FIG. 3 is a schematic configuration diagram showing the power transmission device 1. As shown in FIG.
  • the power transmission device 1 is used to transmit power to drive wheels (not shown) of an automobile, it is not limited to this, and may be used to transmit power to electrical appliances, for example.
  • the power transmission device 1 includes a motor 2 , a power transmission mechanism 3 and a case member 4 .
  • the parts include, for example, the case member 4 alone or a vehicle part having the case member 4, but are not limited to these.
  • Vehicle parts include, for example, a driving device for driving a vehicle, but are not limited to this.
  • the motor 2 is a driving source for transmitting driving force (rotational force) to the driving wheels and the power transmission mechanism 3.
  • the motor 2 includes a shaft 21 extending along the longitudinal direction of the power transmission device 1 and rotatably provided, a motor rotor 22 provided on the outer peripheral side of the shaft 21 , and a case positioned on the outer peripheral side of the motor rotor 22 . and a motor stator 23 provided on the inner peripheral side of an inner cylinder 511 of a third case portion 51 described later of the member 4 .
  • the axial direction of the shaft 21 (hereinafter also simply referred to as the axial direction) coincides with the longitudinal direction of the power transmission device 1 .
  • the shaft 21 is supported by a front-end bearing (not shown) and a rear-end bearing (not shown) provided in the motor case 5 of the case member 4, which will be described later.
  • the power transmission mechanism 3 is a power transmission mechanism for transmitting the driving force output from the motor 2 to the drive shaft (not shown) of the drive wheels.
  • the power transmission mechanism 3 is arranged along the axial direction of the motor 2 and the shaft 21 .
  • the power transmission mechanism 3 includes a planetary gear mechanism 31 and a differential mechanism 32.
  • the planetary gear mechanism 31 has a sun gear 311 , a pinion gear 312 , a ring gear 313 and a carrier 314 .
  • the differential mechanism 32 has a differential case 321 , a differential gear 322 and an output shaft 323 .
  • the driving force output from the motor 2 is transmitted to the output shaft 323 via the sun gear 311, the pinion gear 312, the carrier 314, the differential case 321 and the differential gear 322 in order.
  • the sun gear 311 is provided on the outer peripheral side of the rear end of the shaft 21 so as to be rotatable together with the shaft 21 .
  • Pinion gear 312 has a large pinion 312 a that meshes with sun gear 311 and a small pinion 312 b that is formed coaxially with large pinion 321 a and meshes with ring gear 313 .
  • the ring gear 313 is non-rotatably provided.
  • Carrier 314 is provided so as to be connected to the rear end of small pinion 312b that is spaced apart from large pinion 312a.
  • the differential case 321 is integrally formed with the carrier 314. Differential gear 322 is supported by differential case 321 so as to mesh with both shaft 21 and output shaft 323 .
  • the output shaft 323 is supported by the later-described second case portion 6 of the case member 4 via a supporting bearing (not shown) so as to extend on the same straight line as the shaft 21 .
  • the case member 4 is a housing member for housing both the motor 2 and the power transmission mechanism 3 . Details of the case member 4 will be described later.
  • FIG. 4 is a rear view showing the first case portion 52.
  • FIG. FIG. 5 is a front view showing the second case portion 6.
  • FIG. FIG. 6 is a front view showing the second case portion 6 with the guide plate 7 removed.
  • FIG. 7 is a schematic diagram showing the essential parts of the case member 4.
  • FIG. 8 is a schematic configuration diagram showing a main part of the case member 4 with the guide plate 7 removed.
  • FIG. 9 is a perspective view showing the guide plate 7.
  • FIG.7 and FIG.8 the principal part of the case member 4 is shown in the cross section.
  • the case member 4 includes a motor case 5 for housing the motor 2 and a second case portion 6 for housing the power transmission mechanism 3.
  • the motor case 5 and the second case portion 6 are arranged along the axial direction of the shaft 21 of the motor 2 .
  • the motor case 5 and the second case portion 6 are cast from a material containing aluminum, magnesium, or the like, for example.
  • the motor case 5 has a third case portion 51 and a first case portion 52 .
  • the third case portion 51 includes a cylindrical inner cylinder 511 provided so as to surround the outer peripheral side of the motor 2, a front lid 512 provided at the front end of the inner cylinder 511 so as to seal the front end of the inner cylinder 511, It has a front flange 513 provided on the outer peripheral side of the inner cylinder 511 and an outer spiral portion 514 as a spiral portion provided on the outer peripheral side of the inner cylinder 511 .
  • the inner cylinder 511 and the front flange 513 are integrally formed.
  • the front lid 512 is formed separately from the inner cylinder 511 and the front flange 513 .
  • the first case portion 52 includes a cylindrical outer cylinder 521 provided so as to surround the outer peripheral side of the inner cylinder 511 and an annular ring provided at the rear end of the outer cylinder 521 so as to be positioned on the inner peripheral side of the outer cylinder 521 .
  • the outer cylinder 521, the rear lid 522, the tube portion 523 and the rear flange 524 are integrally formed.
  • the first case portion 52 and the third case portion 51 are connected by bolting such that the inner cylinder 511 of the third case portion 51 is accommodated on the inner peripheral side of the outer cylinder 521 of the first case portion 52. .
  • the front end of the outer cylinder 521 and the rear surface of the front flange 513 are in contact with each other, and the rear end of the inner cylinder 511 and the front surface of the rear lid 522 are in contact with each other. are in abutment.
  • the motor 2 is positioned inside the inner cylinder 511 so that the front end faces the front lid 512 and the rear end faces the rear lid 522 . housed on the perimeter.
  • a spiral cavity (refrigerant cavity) surrounded by the outer peripheral wall of the inner cylinder 511, the inner peripheral wall of the outer cylinder 521, and the outer spiral portion 514 ) is a refrigerant circuit 53 as a water jacket for cooling the motor 2 .
  • the refrigerant circuit 53 is formed between the inner cylinder 511 and the outer cylinder 521 .
  • the inner cylinder 511 and the outer cylinder 521 are configured as an inner peripheral wall of the refrigerant circuit 53 and an outer peripheral wall of the refrigerant circuit 53, respectively.
  • the motor 2 surrounded by the refrigerant circuit 53 can be cooled by circulating cooling water as a refrigerant in the refrigerant circuit 53 when the power transmission device 1 is operated.
  • the helical portion is composed of the outer helical portion 514 provided on the outer peripheral side of the inner cylinder 511, but is not limited to this, and is provided on the inner peripheral side of the outer cylinder 521, for example. It may consist of an inner helix.
  • An opening 525 penetrating through the rear lid 522 is formed in the center of the rear lid 522 .
  • Shaft 21 is provided to pass through opening 525 .
  • a tunnel portion 523 a is formed on the inner peripheral side of the pipe portion 523 .
  • the tunnel portion 523a is a case oil passage for communicating between the power transmission mechanism 3 (specifically, a catch tank portion 65 described later) on the upstream side and the front end side of the motor 2 on the downstream side. That is, one end of the tunnel portion 523 a communicates with the catch tank portion 65 , and the other end of the tunnel portion 523 a communicates with a communication case oil passage (not shown) formed on the front end side of the motor 2 .
  • the communication case oil passage communicates the front end of the tunnel portion 523a with the front end side bearing, and supplies oil from the tunnel portion 523a to the front end side bearing. Thereby, the front end side bearing can be lubricated with oil.
  • the oil is supplied from the tunnel portion 523a to the front end side bearing through the communicating case oil passage, but the present invention is not limited to this. may be supplied to the shaft 21 of the motor 2 by In this case, the shaft 21 can be lubricated with oil. Further, the oil supplied to the shaft 21 is transmitted through the outer peripheral surface of the shaft 21 and returned to the power transmission mechanism 3 .
  • the tunnel portion 523a is formed to be inclined. Specifically, the tunnel portion 523a as a whole inclines along the vertical direction (vertical direction) so as to descend from the rear end side toward the front end side. As a result, oil can smoothly flow from the catch tank portion 65 to the communication case oil passage.
  • the rear end of the tunnel portion 523a is inclined so that the oil flows from the first case portion 52 to the second case portion 6 due to the draft angle.
  • the oil supplied from the catch tank portion 65 to the tunnel portion 523a may leak from the gap.
  • one aspect of the present invention works well.
  • the tunnel portion 523a is formed on the inner peripheral side of the pipe portion 523 located on the outer peripheral side of the outer cylinder 521, the tunnel portion 523a is formed on the outer peripheral side of the outer cylinder 521. Since the spiral refrigerant circuit 53 is formed between the inner cylinder 511 and the outer cylinder 521 , the outer cylinder 521 is configured as an outer peripheral wall of the refrigerant circuit 53 . As a result, the oil flowing through the tunnel portion 523 a provided in the outer cylinder 521 can be efficiently cooled by the refrigerant circuit 53 formed on the inner peripheral side of the outer cylinder 521 .
  • the rear flange 524 is a member for connecting the first case portion 52 and the second case portion 6 so as to face each other. As shown in FIG. 4 , the rear flange 524 is an annular first flange provided along the entire circumference of the outer peripheral edge on the rear side (back side) so as to come into contact with a second abutment portion 64 (described later) of the second case portion 6 . 1 butting portion 526, and a protruding portion 527 provided inside the first butting portion 526 so as to protrude rearward (toward the second case portion 6).
  • a plurality of first through-holes 526a for bolting are formed in the first butted portion 526 so as to pass through the first butted portion 526 .
  • the projecting portion 527 is a member for continuing (connecting) to the catch tank portion 65 .
  • the projecting portion 527 is provided so that the facing surface of the rear end as one end facing the second case portion 6 is flush with the facing surface of the first abutting portion 526 facing the second case portion 6 .
  • the protruding portion 527 can be easily provided without managing the dimensional accuracy.
  • the protruding portion 527 includes a rectangular annular portion 527a as an opening end provided at the rear end of the tunnel portion 523a and a linear portion provided on one side (the right side in FIG. 4) of the annular portion 527a in a rear view. and an arcuate second protrusion 527c as a facing portion provided on the other side (left side in FIG. 4) of the annular portion 527a in a rear view.
  • the main body of the tunnel portion 523a is formed in the center of the area surrounded by the annular portion 527a.
  • the bottom of the rectangular annular portion 527a has one end (right side in FIG. 4) connected to the first projecting portion 527b and the other end (left side in FIG. 4) connected to the second projecting portion 527c.
  • the open end of the tunnel portion 523a is formed by the annular portion 527a forming part of the projecting portion 527, but is not limited to this. may be In this case, the groove is provided with sidewalls higher than the main body of the tunnel portion 523a. As a result, oil can be supplied from the catch tank portion 65 to the main body of the tunnel portion 523a.
  • the first projecting portion 527b is a connecting portion for connecting the first butting portion 526 and the annular portion 527a.
  • the groove 527d is surrounded by the second projecting portion 527c and the other side wall (the left side wall in FIG. 4) of the annular portion 527a connected to the second projecting portion 527c.
  • the second case part 6 is integrally formed to have a cylindrical shape with a bottom.
  • the second case portion 6 includes a tubular portion 61 extending along the axial direction of the shaft 21 , an opening 62 formed at the front end as one end of the tubular portion 61 , and a rear opening as the other end of the tubular portion 61 .
  • a lid portion 63 formed at the end, an annular second abutting portion 64 provided on the outer peripheral edge of the front side (front side) of the cylindrical portion 61 , and the lid portion 63 extending along the axial direction of the shaft 21 .
  • a catch tank portion 65 protruding from the lid portion 63;
  • a mounting seat 66 protruding from the lid portion 63;
  • the cylindrical portion 61 has a housing area 611 located in the center and housing the power transmission mechanism 3, and a catch tank portion housing area 612 located on the outer peripheral side of the housing area 611 and provided with the catch tank portion 65. Then, the power transmission mechanism 3 can be mounted in the accommodation area 611 through the opening 62 .
  • the second butted portion 64 is formed so that its shape corresponds to the shape of the first butted portion 526 of the rear flange 524 . That is, the second mating portion 64 and the first mating portion 526 have the same shape and the same dimensions.
  • a plurality of second through holes 641 for bolting are formed in the second butted portion 64 so as to penetrate the second butted portion 64 .
  • the multiple second through holes 641 correspond to the multiple first through holes 526a, respectively.
  • the catch tank portion 65 is a tank for catching oil that has been raked up by each gear of the power transmission mechanism 3 .
  • the catch tank portion 65 opens upward so as to easily catch the oil that is raked up by each gear of the power transmission mechanism 3 .
  • the catch tank portion 65 is provided so that the facing surface of the front end as one end facing the motor case 5 is flush with the facing surface of the second abutting portion 64 facing the motor case 5 . Thereby, the catch tank portion 65 can be easily provided without managing the dimensional accuracy.
  • the catch tank portion 65 is provided in the catch tank portion accommodating area 612 so as to extend from the lid portion 63 along the axial direction of the shaft 21 and be connected to the inner peripheral wall of the cylinder portion 61 .
  • the size of the catch tank portion 65 in the axial direction of the shaft 21 can be maximized, so that a larger amount of oil that has been raked up by the gears of the power transmission mechanism 3 can be caught.
  • the front end facing surface of the catch tank portion 65 contacts the rear end facing surface of the projecting portion 527 over the entire surface. It is continuous with the projecting portion 527 so as to be in contact with it.
  • the catch tank portion 65 is provided in the catch tank portion accommodating area 612 so as to extend from the lid portion 63 along the axial direction of the shaft 21, but is not limited to this.
  • it may be provided in the catch tank portion accommodation area 612 so as to be separated from the lid portion 63 and connected to the inner peripheral wall of the cylinder portion 61 .
  • the catch tank portion 65 is integrally formed with the cylinder portion 61 or the lid portion 63 that constitutes a part of the second case portion 6 .
  • the catch tank portion 65 can be configured by the second case portion 6 without separately providing the catch tank portion 65, so that the overall configuration of the case member 4 can be simplified and the catch tank portion 65 can be replaced by the second case portion. 6 can be eliminated.
  • the catch tank portion 65 is integrally formed with the second case portion 6 in this embodiment, the catch tank portion 65 is not limited to this, and may be formed separately from the second case portion 6, for example.
  • the facing surface of the front end of the catch tank portion 65 partially coincides with the facing surface of the rear end of the projecting portion 527 . That is, the facing surface of the front end of the catch tank portion 65 has the same shape and size as a part of the facing surface of the rear end of the projecting portion 527 .
  • the catch tank portion 65 is provided so that the facing surface of the front end thereof is flush with the facing surface of the second abutment portion 64, but is not limited to this.
  • the facing surface of the front end may be provided so as not to be flush with the facing surface of the second abutting portion 64 .
  • the projecting portion 527 is provided so that the facing surface of the rear end thereof is not flush with the facing surface of the first abutment portion 526 .
  • the catch tank portion 65 protrudes so that the facing surface of the front end contacts the facing surface of the rear end of the projecting portion 527 .
  • the second abutment portion 64 may be continuous with the first abutment portion 526 so that the opposing surface abuts the opposing surface of the first abutment portion 526 .
  • the catch tank portion 65 includes a first groove portion 651 formed to extend along the axial direction of the shaft 21, a second groove portion 652 formed in parallel with the first groove portion 651, and a first groove portion 651. and a second groove portion 652 , and a side wall 654 as a surrounding wall facing the partition wall 653 and surrounding the catch tank portion 65 .
  • the first groove portion 651 is connected to the second groove portion 652 on one side (the right side in FIGS. 5 and 6) when viewed from the front, and is connected to the second groove portion 652 on the other side (the right side in FIGS. 5 and 6) when viewed from the front. 5 and 6) is connected to the second butting portion 64.
  • the partition wall 653 is configured as one side wall (right side wall) of the first groove portion 651 .
  • the inner peripheral wall of the cylindrical portion 61 is configured as the other side wall (left side wall) of the first groove portion 651 . This eliminates the need to separately provide the other side wall of the first groove portion 651, so that the configuration of the second case portion 6 can be simplified.
  • the front end of the bottom wall (bottom portion) of the first groove portion 651 corresponds to the rear end of the combination of the bottom wall of the annular portion 527a (the rear end of the tunnel portion 523a) of the protrusion 527 and the first protrusion 527b. is formed as That is, the front end of the bottom wall of the first groove portion 651 has the same shape and size as the rear end of the combined portion. 7 and 8, in a state in which the first case portion 52 and the second case portion 6 are connected to face each other, the first groove portion 651 has the front end facing surface of the bottom wall extending over the entire surface. It is continuous with the annular portion 527a and the first projecting portion 527b so as to contact the opposing surface of the rear end of the bottom wall of the annular portion 527a and the opposing surface of the rear end of the first projecting portion 527b.
  • the amount of oil leaking from between the catch tank portion 65 (specifically, the first groove portion 651) and the tunnel portion 523a can be suppressed.
  • oil can smoothly flow from the catch tank portion 65 (specifically, the first groove portion 651) to the tunnel portion 523a.
  • the first groove portion 651 is configured such that the facing surface of the front end of the bottom wall is directly connected to the facing surface of the rear end of the bottom wall of the annular portion 527a and the facing surface of the rear end of the first projecting portion 527b. is formed in
  • the first groove portion 651 is not limited to this. and the facing surface of the rear end of the first protrusion 527b.
  • the amount of oil leaking from between the catch tank portion 65 (specifically, the first groove portion 651) and the tunnel portion 523a can be further suppressed. As a result, the oil can flow more smoothly from the catch tank portion 65 (specifically, the first groove portion 651) to the tunnel portion 523a.
  • the first groove portion 651 has a front end facing surface of the bottom wall that is continuous with both a rear end facing surface of the bottom wall of the annular portion 527a and a rear end facing surface of the first projecting portion 527b. is formed as
  • the first groove portion 651 is not limited to this.
  • the first groove portion 651 may be formed so that the facing surface of the front end of the bottom wall is continuous only with the facing surface of the rear end of the bottom wall of the annular portion 527a.
  • the first groove portion 651 is provided with a side wall that is continuous with the right side wall of the annular portion 527a. This allows the oil to flow smoothly from the catch tank portion 65 (specifically, the first groove portion 651) to the tunnel portion 523a.
  • the first groove portion 651 is continuous with the annular portion 527a so that the upper surface of the front end of the bottom wall is flush with the upper surface of the rear end of the bottom wall of the annular portion 527a.
  • the top surface of the front end of the bottom wall may be continuous with the annular portion 527a so as not to be flush with the top surface of the rear end of the bottom wall of the annular portion 527a. That is, a height difference is formed between the upper surface of the front end of the bottom wall of the first groove portion 651 and the upper surface of the rear end of the bottom wall of the annular portion 527a. Even in this case, oil can be supplied from the catch tank portion 65 to the tunnel portion 523a.
  • the second groove 652 is formed closer to the power transmission mechanism 3 than the first groove 651 is.
  • the side wall 654 is configured as one side wall (right side wall) of the second groove portion 652 .
  • the partition wall 653 is configured as the other side wall (left side wall) of the second groove portion 652 .
  • the partition wall 653 is configured as side walls of both the first groove portion 651 and the second groove portion 652 .
  • the height of partition wall 653 is lower than the height of side wall 654 .
  • the second groove portion 652 is formed such that the front ends of the bottom wall and side walls 654 correspond to the rear ends of the second protrusions 527 c of the protrusion 527 . That is, the bottom wall of the second groove 652 and the front end of the side wall 654 have the same shape and size as the rear end of the second protrusion 527c.
  • the second groove portion 652 is formed on the facing surfaces of the front ends of the bottom wall and the side wall 654. is continuous with the second protruding portion 527c so as to abut against the facing surface of the rear end of the second protruding portion 527c over the entire surface.
  • the second groove portion 652 communicates with the groove 527d surrounded by the second protrusion 527c and the other side wall of the annular portion 527a connected to the second protrusion 527c.
  • the second groove portion 652 is formed such that the facing surfaces of the front ends of the bottom and side walls 654 are directly connected to the facing surfaces of the rear ends of the second projecting portions 527c.
  • the second groove portion 652 is not limited to this. may be formed so as to be continuous with the In this case, the amount of oil leaking from between the second groove portion 652 of the catch tank portion 65 and the second projecting portion 527c can be further suppressed. As a result, the oil can flow more smoothly from the second groove portion 652 to the case oil passage 67 .
  • the second groove 652 is continuous with the second protruding portion 527c so that the upper surface of the front end of the bottom wall is flush with the upper surface of the rear end of the bottom wall of the second protruding portion 527c.
  • a height difference is formed between the upper surface of the front end of the bottom wall of the second groove portion 652 and the upper surface of the rear end of the bottom wall of the second protrusion 527c. Even in this case, the amount of oil leaking from between the second groove portion 652 of the catch tank portion 65 and the second projecting portion 527c can be suppressed. As a result, oil can smoothly flow from the second groove portion 652 to the case oil passage 67 .
  • a case oil passage inlet 671 as an inlet of the case oil passage 67 is formed at the rear end of the second groove portion 652 (specifically, the bottom wall of the rear end of the second groove portion 652) (see FIG. 2). That is, the second groove portion 652 of the catch tank portion 65 communicates with the case oil passage 67 . As a result, oil can be supplied from the second groove portion 652 of the catch tank portion 65 to a plurality of locations other than the tunnel portion 523a.
  • the case oil passage 67 communicates, for example, the second groove portion 652 and the supporting bearing. As a result, the oil can be supplied from the second groove portion 652 of the catch tank portion 65 to the supporting bearing, and the supporting bearing can be lubricated with the oil.
  • the opening area of the case oil passage inlet 671 of the case oil passage 67 is smaller than the opening area of the annular portion 527a of the tunnel portion 523a. That is, the opening area of the annular portion 527 a of the tunnel portion 523 a is larger than the opening area of the case oil passage inlet 671 of the case oil passage 67 . Therefore, more oil can be supplied to the tunnel portion 523a side.
  • the second groove portion 652 is formed so as to be located closer to the power transmission mechanism 3 than the first groove portion 651 is. It may be formed so as to be located on the outside opposite to the power transmission mechanism 3 side.
  • the arrangement relationship between the first groove portion 651 and the second groove portion 652 is opposite to the arrangement relationship between the first groove portion 651 and the second groove portion 652 in this embodiment.
  • the positional relationship between the annular portion 527a of the projecting portion 527 and the second projecting portion 527c of the projecting portion 527 is also opposite to the positional relationship between the annular portion 527a and the second projecting portion 527c of the present embodiment.
  • the partition wall 653 is formed to extend along the axial direction of the shaft 21 .
  • the partition wall 653 is connected at its front end as one end to the other side wall (the left side wall in FIGS. 7 and 8) of the annular portion 527a, and is connected to the lid portion 63 as its other end.
  • the first groove portion 651 and the second groove portion 652 can be reliably partitioned by such a partition wall 653 .
  • the oil in the first groove portion 651 can be suppressed from flowing toward the second groove portion 652, so that the oil can smoothly flow from the first groove portion 651 to the tunnel portion 523a.
  • the partition wall 653 partitions the first groove portion 651 and the second groove portion 652 , so that the partition wall 653 is formed between the annular portion 527 a of the tunnel portion 523 a communicating with the first groove portion 651 and the second groove portion 652 . It separates the case oil passage inlet 671 of the case oil passage 67 that communicates therewith.
  • the height of the partition wall 653 is higher than the height of the main body of the tunnel portion 523a. As a result, the oil in the first groove portion 651 can be reliably supplied to the tunnel portion 523a.
  • the partition wall 653 is formed so that the facing surface at the front end thereof is directly connected to the facing surface at the rear end of the other side wall of the annular portion 527a.
  • the partition wall 653 is not limited to this. may be formed. In this case, it is possible to further suppress the oil in the first groove portion 651 from flowing to the second groove portion 652 side.
  • the catch tank portion 65 accommodates a guide plate 7 as a guide member for guiding oil into the catch tank portion 65 .
  • a guide plate 7 that is separate from the catch tank portion 65 in this manner, the oil that is raked up by each gear of the power transmission mechanism 3 can be guided into the catch tank portion 65 .
  • the guide plate 7 is attached to the mounting seat 66 located above the first groove portion 651 of the catch tank portion 65 by bolting.
  • the guide plate 7 is integrally formed. As shown in FIG. 9, the guide plate 7 includes a first guide groove portion 71 extending along the axial direction of the shaft 21 when the guide plate 7 is attached to the mounting seat 66, and a first guide groove portion 71 provided to extend along the axial direction of the shaft 21. A second guide groove portion 72 provided in parallel with the groove portion 71, a communication port 73 for communicating the first guide groove portion 71 and the second guide groove portion 72, and a second guide so as to be attached to the mounting seat 66 by bolting. and a mounting portion 74 provided in the groove portion 72 .
  • the first guide groove portion 71 is a groove for guiding the caught oil to both the second guide groove portion 72 and the second groove portion 652 of the catch tank portion 65 . As shown in FIGS. 5 and 7, the first guide groove portion 71 is positioned above the second groove portion 652 when the guide plate 7 is attached to the mounting seat 66 .
  • a front end as one end of the first guide groove portion 71 is provided with a first end wall 711 for sealing the front end of the first guide groove portion 71 .
  • a first guide opening 712 for guiding oil to the second groove portion 652 is formed at the rear end as the other end of the first guide groove portion 71 .
  • a gap is formed between the rear end of the first guide groove portion 71 and the lid portion 63 .
  • the first guide groove portion closer to the case oil passage inlet 671 of the case oil passage 67 than the front end of the first guide groove portion 71 is. It can be supplied to the second groove portion 652 from the first guide opening 712 of 71 through the gap. As a result, the oil can be efficiently supplied from the first guide groove portion 71 to the case oil passage 67 .
  • the first guide groove portion 71 is preferably inclined along the vertical direction (vertical direction) so as to descend from the front end side toward the rear end side. As a result, the oil can be supplied from the first guide groove portion 71 to the case oil passage 67 more efficiently.
  • the second guide groove portion 72 is a groove for guiding oil to the first groove portion 651 of the catch tank portion 65 . As shown in FIGS. 5 to 7 , the second guide groove portion 72 is positioned above the first groove portion 651 when the guide plate 7 is attached to the mounting seat 66 .
  • a second end wall 721 for sealing the front end of the second guide groove 72 and a third end for sealing the rear end of the second guide groove 72 are provided at the front and rear ends of the second guide groove 72, respectively.
  • a wall 722 is provided.
  • a second guide opening 723 for guiding oil to the first groove portion 651 is formed at the front end of the side wall of the second guide groove portion 72 that faces the first guide groove portion 71 .
  • the second guide groove portion 72 closer to the annular portion 527a of the tunnel portion 523a than the rear end of the second guide groove portion 72 does not.
  • the first groove 651 can be fed through a second guide opening 723 formed at the front end of the side wall. As a result, the oil can be efficiently supplied from the second guide groove portion 72 to the tunnel portion 523a.
  • the opening area of the second guide opening 723 is larger than the opening area of the first guide opening 712 . Therefore, more oil can be supplied to the first groove portion 651 than to the second groove portion 652 .
  • the second guide groove portion 72 is preferably inclined along the vertical direction (vertical direction) so as to descend from the rear end side toward the front end side. As a result, the oil can be more efficiently supplied from the second guide groove portion 72 to the tunnel portion 523a.
  • a partition wall 75 for partitioning the first guide groove portion 71 and the second guide groove portion 72 is formed between the first guide groove portion 71 and the second guide groove portion 72 .
  • a communication port 73 positioned near the front end of the first guide groove portion 71 is formed in the partition side wall 75 . That is, the communication port 73 is formed so as to be positioned upstream of the first guide opening 712 .
  • the opening area of the communication port 73 is larger than the opening area of the first guide opening 712 . Therefore, much of the oil in the first guide groove portion 71 can be supplied to the second guide groove portion 72 side. As a result, more oil can be supplied to the first groove portion 651 than to the second groove portion 652 .
  • a mounting hole 741 for bolting is formed in the mounting portion 74 .
  • the oil can be guided to the first groove portion 651, which is more difficult to catch oil than the second groove portion 652. can make the flow smoother.
  • the catch tank portion 65 is provided in combination with the guide plate 7 that is separate from the catch tank portion 65 .
  • the catch tank part 65 is not limited to this.
  • the catch tank part 65 may be provided as a single unit without being provided with the guide plate 7 . In this case, the number of parts constituting the case member 4 can be reduced.
  • the case member 4 (component) according to the present embodiment includes a first case portion 52 formed with a tunnel portion 523a having an annular portion 527a (open end) opening toward the axial direction, and a and a second case portion 6 having a catch tank portion 65 that opens toward the first case portion 6 so that the bottom wall (bottom portion) of the tunnel portion 523a and the bottom wall (bottom portion) of the catch tank portion 65 are connected.
  • the case portion 52 and the second case portion 6 are arranged to face each other.
  • the first case portion 52 is configured as an outer peripheral wall of the refrigerant circuit 53 (refrigerant cavity).
  • the oil flowing through the tunnel portion 523a provided in the first case portion 52 can be efficiently cooled by the refrigerant circuit 53 formed on the inner peripheral side of the outer cylinder 521 of the first case portion 52. can.
  • the catch tank portion 65 communicates with a case oil passage 67 provided in the second case portion 6 .
  • oil can be supplied from the catch tank portion 65 to a plurality of locations other than the tunnel portion 523a.
  • the opening area of the case oil passage inlet 671 (entrance) of the case oil passage is smaller than the opening area of the annular portion 527a (open end) of the tunnel portion 523a.
  • the tunnel portion 523 a is provided in the outer cylinder 521 of the first case portion 52 and the outer cylinder 521 is configured as the outer peripheral wall of the refrigerant circuit 53 , it is possible to supply cooling to a portion that is easy to cool. As a result, the oil cooling efficiency can be improved.
  • the catch tank portion 65 is provided with a partition wall 653 that separates the case oil passage inlet 671 (entrance) of the case oil passage 67 from the annular portion 527a (open end) of the tunnel portion 523a. is lower than the height of the side wall 654 (surrounding wall) surrounding the catch tank portion 65 .
  • the catch tank portion 65 communicates with the first groove portion 651 communicating with the annular portion 527a (open end) of the tunnel portion 523a and the case oil passage inlet 671 (inlet) of the case oil passage 67 by the partition wall 653.
  • the first case portion 52 is provided with a second projecting portion 527c (opposing portion) facing the second groove portion 652 of the catch tank portion 65, and the front end (one end) of the second groove portion 652 is provided. ) and the second projecting portion 527c (opposing portion) are connected.
  • the amount of oil leaking from between the second groove portion 652 of the catch tank portion 65 and the second projecting portion 527c can be suppressed.
  • oil can smoothly flow from the second groove portion 652 to the case oil passage 67 .
  • It has a guide plate 7 (guide member) that is accommodated in the catch tank portion 65 and guides the oil into the catch tank portion 65 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Cooling System (AREA)
PCT/JP2022/008240 2021-03-15 2022-02-28 部品 Ceased WO2022196320A1 (ja)

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US18/548,386 US20240235331A9 (en) 2021-03-15 2022-02-28 Component
CN202280021470.9A CN116998093A (zh) 2021-03-15 2022-02-28 部件
EP22769548.3A EP4311082B1 (en) 2021-03-15 2022-02-28 Component
JP2023506933A JP7526354B2 (ja) 2021-03-15 2022-02-28 部品

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Publication number Publication date
EP4311082A1 (en) 2024-01-24
EP4311082B1 (en) 2026-04-29
US20240235331A9 (en) 2024-07-11
CN116998093A (zh) 2023-11-03
JP7526354B2 (ja) 2024-07-31
JPWO2022196320A1 (https=) 2022-09-22
EP4311082A4 (en) 2024-11-27
US20240136891A1 (en) 2024-04-25

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