CN111532121A - Drive transmission device for vehicle - Google Patents

Drive transmission device for vehicle Download PDF

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Publication number
CN111532121A
CN111532121A CN202010070194.8A CN202010070194A CN111532121A CN 111532121 A CN111532121 A CN 111532121A CN 202010070194 A CN202010070194 A CN 202010070194A CN 111532121 A CN111532121 A CN 111532121A
Authority
CN
China
Prior art keywords
gear
bearing
oil
housing
shaft
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.)
Pending
Application number
CN202010070194.8A
Other languages
Chinese (zh)
Inventor
花井孝佳
伊藤英司
高木清式
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.)
Toyota Motor Corp
Aisin Corp
Original Assignee
Aisin AW Co Ltd
Toyota Motor Corp
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
Priority claimed from JP2019233272A external-priority patent/JP7241670B2/en
Application filed by Aisin AW Co Ltd, Toyota Motor Corp filed Critical Aisin AW Co Ltd
Publication of CN111532121A publication Critical patent/CN111532121A/en
Pending legal-status Critical Current

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    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B60K6/405—Housings
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • 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
    • 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
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • 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
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • 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
    • F16H57/0469—Bearings or seals
    • F16H57/0472—Seals
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention provides a vehicle drive transmission device capable of controlling gear noise to be small. A vehicle drive transmission device (100) is provided with a gear mechanism (1) which is provided in a power transmission path connecting a drive force source (MG) and a pair of wheels; a housing (2) having a first reservoir for accumulating oil and housing the gear mechanism (1); and a storage unit constituting member (6) which is disposed above the first storage unit and constitutes a second storage unit for storing oil. A gear mechanism (1) is provided with: gears (32, 42, 43); shaft members (31, 41) connected to the gear; and bearings (91, 92, 93, 94) that rotatably support the shaft members (31, 41) with respect to the housing (2). The housing has a bearing support portion (24) that supports the bearing. The storage portion component has a first contact portion (61) that contacts the bearing support portion (24) via a first elastic member (71) having elasticity.

Description

Drive transmission device for vehicle
Technical Field
The present invention relates to a vehicle drive transmission device that transmits drive force between a drive force source and a pair of wheels.
Background
Patent document 1 listed below discloses an example of such a vehicle drive transmission device. In the following, reference numerals of patent document 1 are cited in the description of the background art.
In the vehicle drive transmission device of patent document 1, a first reservoir 70 for storing oil and a second reservoir 80 for storing oil are formed in a housing 40 for housing a gear mechanism, the second reservoir being disposed above the first reservoir. The second reservoir 80 functions as a catch tank for accumulated oil in order to lower the oil level in the first reservoir 70.
In the vehicle drive transmission device of patent document 1, the oil level of the first reservoir 70 is lowered by the second reservoir 80, so that the oil stirring resistance due to various rotating members is reduced.
Patent document 1: japanese patent laid-open publication No. 2018-57243 (FIGS. 1 and 5)
However, in the vehicle drive transmission device of patent document 1, a plurality of shaft members are rotatably supported by a plurality of bearings B supported by the housing 40. Therefore, there is a problem that vibration generated at the meshing portion of the gears coupled to the shaft member is transmitted to the housing 40 via the bearing B, and large gear noise is likely to be generated.
Therefore, it is desirable to realize a vehicle drive transmission device capable of controlling gear noise to be small.
Disclosure of Invention
In view of the above, the characteristic structure of the drive transmission device for a vehicle is as follows.
A vehicle drive transmission device that transmits drive power between a drive power source and a pair of wheels, the vehicle drive transmission device comprising: a gear mechanism provided in a power transmission path connecting the driving force source and the pair of wheels; a housing having a first reservoir for accumulating oil and housing the gear mechanism; and a reservoir constituting member which is arranged above the first reservoir and constitutes a second reservoir for accumulating oil, the gear mechanism including: the storage unit includes a gear, a shaft member coupled to the gear, and a bearing rotatably supporting the shaft member with respect to the housing, the housing includes a bearing support portion supporting the bearing, and the storage unit constituting member includes a first contact portion contacting the bearing support portion via a first elastic member having elasticity.
According to this characteristic configuration, the first elastic member having elasticity is interposed between the first contact portion of the storage portion constituting member and the bearing support portion of the housing. Thus, the vibration generated at the meshing portion of the gears and transmitted to the bearing support portion via the shaft member and the bearing can be damped by the first elastic member. Further, the vibration transmitted to the storage unit component via the first elastic member can be damped by the oil stored in the second storage unit. As a result, the vibration of the entire housing can be suppressed to be small, and the gear noise can be controlled to be small.
Drawings
Fig. 1 is a cross-sectional view taken along an axial direction of a vehicle drive transmission device according to an embodiment.
Fig. 2 is a cross-sectional view orthogonal to the axial direction showing a main part of the drive transmission device for a vehicle of the embodiment.
Fig. 3 is a cross-sectional view along the axial direction showing a main part of the drive transmission device for a vehicle according to the embodiment.
Description of reference numerals
100: a vehicular drive transmission device; 1: a gear mechanism; 2: a housing; 24: a bearing support; 3: an input section; 31: an input shaft (shaft member); 32: an input gear (gear); 4: a secondary gear mechanism; 41: a counter shaft (shaft member); 42: a first gear (gear); 43: a second gear (gear); 5: a differential gear device; 6: a storage unit constituting member; 61: a first abutting portion; 71: a first elastic member; 91: a first input bearing (bearing); 92: a second input bearing (bearing); 93: a first sub-bearing (bearing); 94: a second counter bearing (bearing); 10A: a first storage unit; 10B: a second storage unit; MG: a rotary electric machine (driving force source); f: an oil; l: axial direction; r: and radial direction.
Detailed Description
Hereinafter, the drive transmission device 100 for a vehicle according to the embodiment will be described with reference to the drawings. The vehicle drive transmission device 100 is mounted, for example, on a hybrid vehicle having an internal combustion engine and a rotating electric machine as drive power sources for a plurality of wheels, or an electric vehicle having a rotating electric machine as a drive power source for a plurality of wheels.
As shown in fig. 1, the vehicle drive transmission device 100 transmits drive force between a drive force source and a pair of wheels. In the present embodiment, the rotating electrical machine MG functions as a drive force source. In the present specification, the term "rotating electrical machine" is used as a concept including a motor (electric motor), a generator (electric generator), and a motor/generator that performs both functions of the motor and the generator as needed.
The vehicle drive transmission device 100 includes: the drive device is provided with a gear mechanism 1 that connects a drive force source and a power transmission path between a pair of wheels, and a case 2 that houses the gear mechanism 1.
In the present embodiment, the gear mechanism 1 includes: an input member 3 drivingly coupled to a driving force source, a pinion mechanism 4, and a differential gear device 5 that distributes the driving force transmitted from the driving force source side to a pair of wheels. The input member 3 is disposed on a first shaft a1 as a rotation axis thereof. In the present embodiment, the rotating electrical machine MG drivingly coupled to the input member 3 is also disposed on the first shaft a 1. The pinion mechanism 4 is disposed on the second shaft a2 as the rotation axis thereof, and the differential gear device 5 is disposed on the third shaft A3 as the rotation axis thereof. The first axis a1, the second axis a2, and the third axis A3 are different imaginary axes, and are arranged in parallel to each other.
In the following description, a direction parallel to the axes a1 to A3 is referred to as an "axial direction L" of the vehicle drive transmission device 100. In the axial direction L, a side on which the rotating electrical machine MG is disposed with respect to the input member 3 is referred to as an "axial first side L1", and an opposite side thereof is referred to as an "axial second side L2". Further, a direction perpendicular to each of the first axis a1, the second axis a2, and the third axis A3 is defined as a "radial direction R" with respect to each axis. In addition, when it is not necessary to distinguish which axis is used as a reference or when it is clear which axis is used as a reference, it may be referred to as "radial R" only.
Here, the term "drive coupling" in the present application means a state in which two rotating members are coupled to each other so as to be able to transmit a driving force, and includes: the two rotary members are connected to each other so as to rotate integrally, or the two rotary members are connected to each other so as to be capable of transmitting a driving force via one or more transmission members. The transmission member includes various members for transmitting rotation at the same speed or at different speeds, such as a shaft, a gear mechanism, a belt, and a chain. Further, the transmission member may include an engagement device that selectively transmits rotation and a driving force, for example, a friction engagement device, a mesh engagement device, or the like. However, in the differential gear device 5, when each rotating member is referred to as "drive-coupled", it refers to a state in which 3 or more rotating members provided in the device are related to each other and are drive-coupled to each other without passing through another rotating member.
The rotating electric machine MG includes: the stator St and the rotor Ro disposed radially inward R2 of the stator St. The stator St includes: a stator core Stc supported by the case 2, and a coil C wound around the stator core Stc. The rotor Ro has a rotor core Roc rotatable with respect to the stator core Stc, and a permanent magnet M disposed in the rotor core Roc. In the present embodiment, the rotor core Roc is disposed radially inward of the stator core Stc. The rotor shaft Ros is coupled to the inner circumferential surface of the rotor core Roc.
The rotor shaft Ros is formed in a cylindrical shape extending in the axial direction L. The rotor shaft Ros rotates integrally with the rotor Ro about the first shaft a 1. The rotor shaft Ros is coupled to the input member 3, and the rotor shaft Ros rotates integrally with the input member 3.
In the present embodiment, the casing 2 has a peripheral wall portion 21 surrounding the rotating electrical machine MG, the input member 3, the pinion mechanism 4, and the differential gear device 5 on the outside in the radial direction R. In the present embodiment, the case 2 has a first side wall 22 and a second side wall 23 extending in the radial direction R. The first side wall portion 22 is disposed between the rotating electrical machine MG and the input member 3 and the pinion gear mechanism 4 in the axial direction L. The second side wall portion 23 is disposed on the second axial side L2 with respect to the input member 3 and the pinion mechanism 4.
In the present embodiment, the peripheral wall portion 21 includes: a first peripheral wall portion 211, and a second peripheral wall portion 212 joined to the first peripheral wall portion 211 from the axial second side L2. In the illustrated example, the first peripheral wall portion 211 is formed integrally with the first side wall portion 22, and the second peripheral wall portion 212 is formed integrally with the second side wall portion 23. That is, the housing 2 includes: a first housing portion having a first peripheral wall portion 211 and a first side wall portion 22, and a second housing portion having a second peripheral wall portion 212 and a second side wall portion 23. The first case portion and the second case portion are coupled and joined to each other by coupling members such as bolts, via the first peripheral wall portion 211 and the second peripheral wall portion 212.
The housing 2 has a bearing support portion 24 that supports a bearing of the gear mechanism 1. In the present embodiment, the bearing support portion 24 includes: a first bearing support portion 24A that supports the first input bearing 91 and the first sub-bearing 93, and a second bearing support portion 24B that supports the second input bearing 92 and the second sub-bearing 94. The first bearing support portion 24A is formed on the first side wall portion 22, and the second bearing support portion 24B is formed on the second side wall portion 23. The first input bearing 91 and the second input bearing 92 are bearings that support the input member 3 to be rotatable. The first sub bearing 93 and the second sub bearing 94 are bearings that support the pinion mechanism 4 to be rotatable.
The input member 3 is an input member of the gear mechanism 1. The input member 3 has an input shaft 31 and an input gear 32.
The input shaft 31 is a shaft member extending in the axial direction L. In the present embodiment, the end portion of the first side L1 in the axial direction of the input shaft 31 is coupled to the end portion of the second side L2 in the axial direction of the rotor shaft Ros. In the illustrated example, the end portion of the first side L1 in the axial direction of the input shaft 31 is inserted into the end portion of the second side L2 in the axial direction of the rotor shaft Ros so that the input shaft 31 is positioned inside the rotor shaft Ros in the radial direction R, and the end portions are coupled to each other by spline engagement.
The input shaft 31 is rotatably supported by the housing 2 via a first input bearing 91 and a second input bearing 92. In the present embodiment, a portion of the input shaft 31 on the first side L1 in the axial direction from the center portion in the axial direction L and a portion on the second side L2 in the axial direction from the connection portion with the rotor shaft Ros are rotatably supported by the first bearing support portion 24A of the housing 2 via the first input bearing 91. An end portion of the second side L2 in the axial direction of the input shaft 31 is rotatably supported by the second bearing support portion 24B of the housing 2 via the second input bearing 92.
The input gear 32 is a gear that transmits the driving force from the driving force source to the pinion mechanism 4. The input gear 32 is coupled to the input shaft 31. In the present embodiment, the input gear 32 is formed integrally with the input shaft 31. In the present embodiment, the input gear 32 is disposed between the first input bearing 91 and the second input bearing 92. In the illustrated example, the input gear 32 is disposed adjacent to the axial first side L1 with respect to the second input bearing 92.
In the present embodiment, the input shaft 31 is provided with a parking gear 33. The parking gear 33 is configured to be capable of switching between a locked state in which rotation is not possible and an unlocked state in which rotation is possible by a parking lock mechanism (not shown). The parking gear 33 is coupled to the input shaft 31 so as to rotate integrally with the input shaft 31. In the present embodiment, the parking gear 33 is coupled to the input shaft 31 by spline engagement.
The pinion mechanism 4 is disposed between the input member 3 and the differential gear device 5 in the power transmission path. The counter gear mechanism 4 has a counter shaft 41, a first gear 42, and a second gear 43.
The counter shaft 41 is a shaft member extending in the axial direction L. The counter shaft 41 is rotatably supported by the housing 2 via a first sub bearing 93 and a second sub bearing 94. In the present embodiment, an end portion of the first axial side L1 of the counter shaft 41 is rotatably supported by the first bearing support portion 24A of the housing 2 via the first sub bearing 93, and an end portion of the second axial side L2 of the counter shaft 41 is rotatably supported by the second bearing support portion 24B of the housing 2 via the second sub bearing 94.
The first gear 42 is an input member of the pinion mechanism 4. The first gear 42 meshes with the input gear 32 of the input member 3. The first gear 42 is coupled to the counter shaft 41 so as to rotate integrally with the counter shaft 41. In the present embodiment, the first gear 42 is coupled to the counter shaft 41 by spline engagement. In the present embodiment, the first gear 42 is disposed between the first sub-bearing 93 and the second sub-bearing 94 and on the second side L2 in the axial direction with respect to the second gear 43. In the illustrated example, the first gear 42 is configured to abut the axial first side L1 with respect to the second counter bearing 94 and the axial second side L2 with respect to the second gear 43.
The second gear 43 is an output member of the pinion mechanism 4. In the present embodiment, the second gear 43 is formed smaller in diameter than the first gear 42. The second gear 43 is coupled to the counter shaft 41 so as to rotate integrally with the counter shaft 41. In the present embodiment, the second gear 43 is formed integrally with the counter shaft 41. In the present embodiment, the second gear 43 is disposed between the first sub-bearing 93 and the second sub-bearing 94 and on the first side L1 in the axial direction with respect to the first gear 42. In the illustrated example, the second gear 43 is disposed adjacent to the axial second side L2 with respect to the first sub bearing 93, and adjacent to the axial first side L1 with respect to the first gear 42.
The differential gear device 5 distributes the driving force transmitted from the driving force source side to a pair of wheels. In the present embodiment, the differential gear device 5 distributes the driving force from the rotating electrical machine MG transmitted via the input member 3 and the sub-gear mechanism 4 to the drive shaft DS drivingly coupled to each of the pair of wheels. The differential gear device 5 includes: differential input gear 51, differential case 52, pinion shaft 53, a pair of pinions 54, and a pair of side gears 55. In the present embodiment, the pair of pinions 54 and the pair of side gears 55 are both bevel gears.
The differential input gear 51 is an input member of the differential gear device 5. The differential input gear 51 meshes with the second gear 43 of the pinion mechanism 4. The differential input gear 51 rotates about the third axis a 3. The differential input gear 51 is coupled to the differential case 52 so as to rotate integrally with the differential case 52.
The differential case 52 rotates about the third axis a3 integrally with the differential input gear 51. An end portion of the first axial side L1 of the differential case 52 is rotatably supported with respect to the case 2 via a first differential bearing 95. An end portion of the axial second side L2 of the differential case 52 is rotatably supported with respect to the case 2 via a second differential bearing 96. The differential case 52 is a hollow member. A pinion shaft 53, a pair of pinions 54, and a pair of side gears 55 are housed inside the differential case 52.
The pinion shaft 53 extends in a radial direction R with reference to the third axis a 3. The pinion shaft 53 is inserted through the pair of pinion gears 54 and rotatably supported. The pinion shaft 53 is disposed to penetrate the differential case 52. The pinion shaft 53 is locked to the differential case 52 by a locking member 53a, and rotates integrally with the differential case 52. In the illustrated example, the locking member 53a is a rod-shaped pin inserted through both the differential case 52 and the pinion shaft 53.
The pair of pinion gears 54 are attached to the pinion shaft 53 in a state of facing each other with a space therebetween along a radial direction R with respect to the third axis a 3. The pair of pinions 54 are configured to be rotatable (rotate) about the pinion shaft 53 and also rotatable (revolve) about the third shaft a 3.
The pair of side gears 55 are distributed rotary members in the differential gear device 5. The pair of side gears 55 are disposed to face each other with the pinion shaft 53 interposed therebetween at intervals in the axial direction L. The pair of side gears 55 are configured to rotate in the circumferential direction. The pair of side gears 55 are engaged with the pair of pinions 54. In the present embodiment, a spline for coupling the drive shaft DS is formed on the inner peripheral surface of each side gear 55.
As shown in fig. 2, a first storage unit 10A that stores oil F and a second storage unit 10B that is disposed above the first storage unit 10A and stores oil F are provided inside the casing 2.
In the present embodiment, the first storage unit 10A is a space surrounded by the inner surface of the casing 2 at the lower portion of the casing 2. The first storage unit 10A stores oil F in an amount that can be lifted by the differential input gear 51 of the differential gear device 5. That is, the oil level of the oil F stored in the first storage portion 10A during the operation of the differential gear device 5 (during the traveling of the vehicle) is set to be higher than the lower end of the differential input gear 51. The oil level of the oil F stored in the first storage portion 10A during the stop of the differential gear device 5 (during the stop of the vehicle) is preferably set above the upper end of the output seal member 73 because the oil level is used for lubricating the output seal member 73 interposed in the gap between the housing 2 and the drive shaft DS.
The second reservoir 10B functions as a catch tank for reducing the height of the oil surface of the oil F stored in the first reservoir 10A while sufficiently securing the amount of the oil F in the casing 2. That is, the greater the amount of the oil F stored in the second storage unit 10B, the lower the oil level of the oil F stored in the first storage unit 10A. In the present embodiment, the second storage unit 10B is disposed above the first axis a1, the second axis a2, and the third axis A3.
As shown in fig. 3, the second storage unit 10B is configured using the storage unit configuring member 6. The storage portion constituting member 6 has a first contact portion 61, and the first contact portion 61 is in contact with the bearing support portion 24 of the housing 2 via a first elastic member 71 having elasticity.
In the present embodiment, the first bearing support portion 24A includes a protrusion 241 that protrudes in the axial direction L so as to support each of the first input bearing 91 and the first sub-bearing 93 from the outside in the radial direction R. In the present embodiment, the projection 241 is formed to project from the first side wall 22 toward the axial second side L2. Then, the first contact portion 61 of the storage portion constituting member 6 contacts the projection portion 241 from the axial second side L2 via the first elastic member 71. The first elastic member 71 is made of a material having elasticity such as resin. In the present embodiment, the first elastic member 71 is a seal member that blocks a gap between the storage portion constituting member 6 and the bearing support portion 24 (here, the protrusion 241 of the first bearing support portion 24A). Therefore, in the present embodiment, at least a part of the second storage unit 10B is formed between the storage unit constituting member 6 and the case 2.
In the present embodiment, the second side wall portion 23 of the housing 2 is disposed on the opposite side (axial second side L2) of the axial direction L from the first bearing support portion 24A with respect to the storage portion constituting member 6. The storage portion constituting member 6 has a second contact portion 62, and the second contact portion 62 is in contact with the second side wall portion 23 via a second elastic member 72 having elasticity. In the present embodiment, the second contact portion 62 is formed to protrude from the storage side wall portion 63 of the storage portion constituting member 6 toward the second side L2 in the axial direction. The second elastic member 72 is made of a material having elasticity such as resin. The storage side wall portion 63 is formed to extend upward from an end portion of the axial second side L2 of the storage bottom wall portion 64 that becomes the bottom portion of the storage portion constituting member 6. In the present embodiment, the first contact portion 61 is disposed at the end of the first axial side L1 of the storage bottom wall portion 64.
In the present embodiment, the second contact portion 62 is in contact with the oil passage forming portion 25 of the housing 2 via the second elastic member 72. The oil passage forming portion 25 is a portion of the housing 2 where a connection oil passage 25a through which the oil F flows is formed. In the present embodiment, the oil passage forming portion 25 is formed to protrude from the second side wall portion 23 toward the axial first side L1.
In the present embodiment, the second contact portion 62 is formed in a cylindrical shape extending in the axial direction L, and the oil F is configured to be able to flow inside the second contact portion 62. The second contact portion 62 connects the connection oil passage 25a formed in the oil passage forming portion 25 and the second storage portion 10B. In the present embodiment, the second elastic member 72 is a sealing member that blocks the gap between the storage portion constituting member 6 and the oil passage forming portion 25. In the present embodiment, the second elastic member 72 is formed in a tubular shape extending in the axial direction L. The second elastic member 72 is fitted into the second contact portion 62 from the axial second side L2 so as to be located inside the second contact portion 62 in the radial direction R.
In this way, in the present embodiment, the first contact portion 61 contacts the projection portion 241 from the axial second side L2 via the first elastic member 71, and the second contact portion 62 contacts the second side wall portion 23 (here, the oil passage forming portion 25) from the axial first side L1 via the second elastic member 72. Thereby, the storage portion constituting member 6 is supported by the housing 2 in the axial direction L.
In the present embodiment, the storage portion constituting member 6 has a partition wall portion 65 extending upward from the first contact portion 61. The partition wall 65 partitions the second storage 10B into the first oil chamber 10Ba and the second oil chamber 10 Bb. That is, the partition wall 65 contacts both the oil F stored in the first oil chamber 10Ba and the oil F stored in the second oil chamber 10 Bb. The first oil chamber 10Ba is a portion of the second reservoir 10B on the side (axial second side L2) opposite to the side of the first bearing support portion 24A in the axial direction L with respect to the partitioning wall portion 65. The second oil chamber 10Bb is a portion of the second reservoir 10B on the side (axial first side L1) of the first bearing support portion 24A with respect to the axial direction L of the dividing wall portion 65.
In the present embodiment, the storage portion constituting member 6 is configured as a container in which wall portions including the storage side wall portion 63 and the partition wall portion 65 are formed to rise from the outer edge portion of the storage bottom wall portion 64. That is, the storage part constituting member 6 is a container having an open upper surface. Therefore, in the present embodiment, the internal space of the reservoir constituting member 6 functions as the first oil chamber 10 Ba. On the other hand, a space surrounded by the partition wall 65, the first side wall 22 of the housing 2, and the projection 241 functions as the second oil chamber 10 Bb. That is, the second oil chamber 10Bb is configured using the partition wall 65 and the bearing support portion 24. As described above, since the first elastic member 71 as a sealing member is interposed between the first contact portion 61 of the storage portion constituting member 6 and the projection portion 241 of the housing 2, the oil F stored in the second oil chamber 10Bb is suppressed from flowing out from between them.
In the present embodiment, the partition wall 65 is provided with a communication hole 65a that communicates the first oil chamber 10Ba with the second oil chamber 10 Bb. In the present embodiment, the first supply hole 64a and the second supply hole 64b are formed in the storage bottom wall portion 64. The first supply hole 64a is disposed at a position overlapping with the input gear 32 of the input member 3 when viewed from the vertical direction. The second supply hole 64b is disposed at a position overlapping with the parking gear 33 when viewed from the vertical direction. Thereby, the oil F flowing out of the first oil chamber 10Ba through the first supply hole 64a falls and is supplied to the input gear 32. The oil F flowing out of the first oil chamber 10Ba through the second supply hole 64b falls and is supplied to the parking gear 33.
Here, regarding the arrangement of the two members, "overlap when viewed from a specific direction" means that, when a virtual straight line parallel to the visual line direction is moved in each direction orthogonal to the virtual straight line, there is at least a partial region where the virtual straight line intersects both the two members.
The oil F circulates inside the casing 2 by the oil circulation mechanism. In the present embodiment, the differential input gear 51 of the differential gear device 5 functions as an oil circulation mechanism. As described above, the oil F stored in the first storage portion 10A is lifted up by the differential input gear 51 as the differential input gear 51 rotates (see fig. 2). The oil F is raised above the first reservoir 10A by the differential input gear 51, and then falls down to the first reservoir 10A, so that the oil F is supplied to the first reservoir 10A.
As shown in fig. 1, in the present embodiment, a hydraulic pump 8 is provided as another oil circulation mechanism. The hydraulic pump 8 is a mechanical hydraulic pump driven by the driving force transmitted through the power transmission path. In the present embodiment, the hydraulic pump 8 has a pump drive shaft 81 connected to rotate integrally with the counter shaft 41 of the counter gear mechanism 4. The pump drive shaft 81 extends in the axial direction L. In the present embodiment, the end portion of the first axial side L1 of the pump drive shaft 81 is coupled to the end portion of the second axial side L2 of the counter shaft 41. In the illustrated example, the pump drive shaft 81 is disposed inside the cylindrical sub shaft 41 in the radial direction R, and these are coupled to each other by spline engagement. The pump drive shaft 81 rotates in accordance with the rotation of the counter shaft 41, and the hydraulic pump 8 is driven.
The hydraulic pump 8 pumps up the oil F stored in the first storage unit 10A, and supplies the pumped-up oil F to each unit in the casing 2. In the present embodiment, a part of the oil F discharged from the hydraulic pump 8 flows through an oil passage formed to penetrate the pump drive shaft 81 in the axial direction L to the counter oil passage 41a formed to penetrate the counter shaft 41 in the axial direction L. The oil F that has passed through the counter oil passage 41a then flows out from the opening of the end surface of the first axial side L1 of the counter shaft 41. The oil F flowing out of the counter oil passage 41a lubricates the first counter bearing 93, the differential gear device 5, and the like, and then reaches the first reservoir 10A.
On the other hand, as shown in fig. 1 and 3, the other part of the oil F discharged from the hydraulic pump 8 flows to the side wall internal oil passage 23a formed inside the second side wall portion 23 of the casing 2. The oil F flowing into the side wall internal oil passage 23a flows into the internal space of the casing 2 through each of the first branch oil passage 23b and the second branch oil passage 23c branched from the side wall internal oil passage 23a and the connection oil passage 25 a.
The oil F having passed through the first branch oil passage 23b lubricates the second counter bearing 94, the first gear 42 of the counter gear mechanism 4, the second differential bearing 96, and the like, and then reaches the first reservoir 10A. The oil F having passed through the second branch oil passage 23c flows into the input shaft oil passage 31a formed to penetrate the input shaft 31 of the input member 3 in the axial direction L. The oil F flowing into the input shaft oil passage 31a is supplied to each part of the rotary electric machine MG through an oil passage formed in the rotor shaft Ros. As shown in fig. 3, the oil F having passed through the connecting oil passage 25a is supplied to the first oil chamber 10Ba of the second storage portion 10B via the second contact portion 62. The oil F supplied to the first oil chamber 10Ba is also supplied to the second oil chamber 10Bb through the communication hole 65a of the partition wall 65.
The oil F stored in the first oil chamber 10Ba is supplied to the input gear 32 of the input member 3 through the first supply hole 64a, and is supplied to the parking gear 33 through the second supply hole 64 b. Then, the pinion mechanism 4 and the like are lubricated by the oil F supplied to each of the input gear 32 and the parking gear 33 and reach the second differential bearing 96. The oil F lubricating the second differential bearing 96 flows into the first reservoir 10A.
In this way, in the present embodiment, the first supply passage P1 for supplying the oil F stored in the first oil chamber 10Ba to the input member 3, the pinion mechanism 4, and the second differential bearing 96 is provided inside the housing 2.
On the other hand, as shown in fig. 2 and 3, the oil F stored in the second oil chamber 10Bb is supplied to the first differential bearing 95 through a case oil passage 2a formed in the case 2 so as to communicate with the second oil chamber 10 Bb. In this way, in the present embodiment, a second supply passage P2 for supplying the oil F stored in the second oil chamber 10Bb to the first differential bearing 95 is further provided inside the housing 2.
[ other embodiments ]
(1) In the above embodiment, the description has been given of an example in which the first contact portion 61 of the storage portion constituting member 6 contacts the first bearing support portion 24A (the projection portion 241) of the housing 2. However, the present invention is not limited to this configuration, and instead of the first bearing support portion 24A, the first contact portion 61 may be configured to contact the second bearing support portion 24B. In the above embodiment, the first input bearing 91 and the first sub-bearing 93 are both supported by the first bearing support portion 24A with which the first contact portion 61 is in contact. However, the present invention is not limited to this configuration, and the bearing support portion 24 with which the first contact portion 61 contacts may support only one of the input bearings 91 and 92 that support the input shaft 31 and the sub bearings 93 and 94 that support the sub gear mechanism 4.
(2) In the above embodiment, the first contact portion 61 is described as an example of a structure in which it contacts the first bearing support portion 24A (the protrusion portion 241) from the axial second side L2. However, the present invention is not limited to this configuration, and for example, the first contact portion 61 may be configured to contact the first bearing support portion 24A from above.
(3) In the above embodiment, the storage portion constituting member 6 has the second contact portion 62 that contacts the oil passage forming portion 25 via the second elastic member 72. However, the present invention is not limited to such a configuration, and the second contact portion 62 may contact the second bearing support portion 24B via the second elastic member 72, or may contact a portion of the second side wall portion 23 other than the second bearing support portion 24B and the oil passage forming portion 25.
(4) The first elastic member 71 is a sealing member that blocks the gap between the first contact portion 61 of the storage portion constituting member 6 and the protrusion 241 of the bearing support portion 24. However, the present invention is not limited to this configuration, and the first elastic member 71 may not have a function of closing the gap between the first contact portion 61 and the protrusion portion 241. In this case, the second oil chamber 10Bb is not formed between the partition wall 65, the first side wall 22, and the projection 241.
(5) In the above embodiment, the storage portion constituting member 6 has been described as an example having the partitioning wall portion 65 extending upward from the first contact portion 61. However, the present invention is not limited to this configuration, and the storage portion constituting member 6 may not have the partition wall 65. The partition wall 65 may be formed to extend upward from the storage bottom wall 64.
(6) In the above embodiment, the configuration in which the gear mechanism 1 includes the input member 3, the pinion mechanism 4, and the differential gear device 5 has been described as an example. However, the present invention is not limited to such a configuration, and various configurations can be applied.
(7) In the above embodiment, the description has been given of an example of a configuration in which the oil F stored in the first storage unit 10A is pumped up by the differential input gear 51 of the differential gear device 5 and supplied to the second storage unit 10B. However, the present invention is not limited to such a configuration, and the oil F stored in the first storage unit 10A may be pumped up by the differential input gear 51 and not supplied to the second storage unit 10B. In such a configuration, the upper side of the second storage unit 10B may be closed.
(8) In the above embodiment, the example of the configuration in which the oil F is supplied to the second reservoir 10B by the hydraulic pump 8 has been described. However, the present invention is not limited to this configuration, and may be configured without providing the hydraulic pump 8. In such a configuration, it is preferable that the storage portion constituting member 6 and the housing 2 are coupled by a coupling member such as a bolt without providing the second contact portion 62 to the storage portion constituting member 6. In this case, the oil F lifted by the differential input gear 51 is supplied to the second reservoir 10B.
(9) In the above embodiment, the second gear 43 of the pinion mechanism 4 has a smaller diameter than the first gear 42. However, the second gear 43 is not limited to this configuration, and may have a larger diameter than the first gear 42 or the same diameter as the first gear 42.
(10) The configurations disclosed in the above embodiments can be combined with the configurations disclosed in other embodiments as long as no contradiction occurs. The embodiments disclosed in the present specification are merely exemplary in all aspects with respect to other configurations. Therefore, various changes can be made as appropriate without departing from the spirit and scope of the present invention.
[ brief summary of the embodiments ] described above
The outline of the vehicle drive transmission device 100 described above will be described below.
Technical solution 1
The vehicle drive transmission device 100 is a vehicle drive transmission device 100 that transmits drive force between a drive force source MG and a pair of wheels, and includes: a gear mechanism 1 provided in a power transmission path connecting the driving force source MG and the pair of wheels; a housing 2 having a first reservoir 10A for storing oil F and housing the gear mechanism 1; and a storage unit constituting member 6 disposed above the first storage unit 10A and constituting a second storage unit 10B that stores oil F, wherein the gear mechanism 1 includes gears 32, 42, and 43, shaft members 31 and 41 connected to the gears 32, 42, and 43, and bearings 91, 92, 93, and 94 that rotatably support the shaft members 31 and 41 with respect to the housing 2, the housing 2 includes a bearing support portion 24 that supports the bearings 91, 92, 93, and 94, and the storage unit constituting member 6 includes a first contact portion 61 that contacts the bearing support portion 24 via a first elastic member 71 having elasticity.
According to this configuration, the first elastic member 71 having elasticity is interposed between the first contact portion 61 of the storage portion constituting member 6 and the bearing support portion 24 of the housing 2. Thus, the vibration generated at the meshing portions of the gears 32, 42, 43 and transmitted to the bearing support portion 24 via the shaft members 31, 41 and the bearings 91, 92, 93, 94 can be damped by the first elastic member 71. Further, the vibration transmitted to the storage unit constituting member 6 via the first elastic member 71 can be damped by the oil F stored in the second storage unit 10B. As a result, the vibration of the entire housing 2 can be suppressed to be small and the gear noise can be controlled to be small.
Technical solution 2
Here, it is preferable that the housing 2 has a first side wall portion 22 extending in the radial direction R, and the bearing support portion 24 has: and a protrusion 241 protruding in the axial direction L from the first side wall 22 so as to support the bearings 91, 92, 93, and 94 from the outside in the radial direction R, wherein the first contact portion 61 is in contact with the protrusion 241 via the first elastic member 71.
According to this configuration, the first contact portion 61 of the storage portion constituting member 6 can be easily brought into contact with the bearing support portion 24 of the housing 2 at a position relatively close to the bearings 91, 92, 93, and 94. This can reduce the distance from the meshing portion of the gears 32, 42, 43 to the first elastic member 71 in the vibration transmission path. That is, the first elastic member 71 can be disposed at a position relatively close to the meshing portion of the gears 32, 42, 43 that are the vibration generation source. As a result, the vibration generated at the meshing portion of the gears 32, 42, 43 can be attenuated at a relatively close position, and the vibration can be hardly transmitted to the entire housing 2. Therefore, gear noise can be suppressed to be smaller.
Technical solution 3
Preferably, the housing 2 includes a second side wall portion 23 extending in the radial direction R, the second side wall portion 23 is disposed on the opposite side (axial direction second side L2) of the axial direction L from the side of the bearing support portion 24 with respect to the storage portion constituting member 6, and the storage portion constituting member 6 includes a second contact portion 62 contacting the second side wall portion 23 via a second elastic member 72 having elasticity.
According to this configuration, the first contact portion 61 contacts the bearing support portion 24 via the first elastic member 71, and the second contact portion 62 contacts the second side wall portion 23 via the second elastic member 72. That is, the storage portion constituting member 6 is supported by the housing 2 via the elastic members 71 and 72 on both sides in the axial direction L. This ensures a function of suppressing the vibration of the entire housing 2 to a small level, and can appropriately support the storage unit constituting member 6 with a simple configuration.
Technical solution 4
The first elastic member 71 is a sealing member that closes a gap between the storage portion constituting member 6 and the bearing support portion 24, the storage portion constituting member 6 includes a partition wall portion 65 extending upward from the first contact portion 61, and the partition wall portion 65 partitions the second storage portion 10B into: a first oil chamber 10Ba located on a side (axial second side L2) opposite to the side of the bearing support portion 24 in the axial direction L with respect to the partitioning wall portion 65; and a second oil chamber 10Bb located on the side (axial first side L1) of the bearing support portion 24 in the axial direction L with respect to the dividing wall portion 65.
According to this configuration, the contact portion 61 of the storage portion constituting member 6 contacts the bearing support portion 24 of the housing 2 via the first elastic member 71, which is a sealing member that closes the gap between the storage portion constituting member 6 and the bearing support portion 24. Thus, the portion of the housing 2 including the bearing support portion 24 can be used to configure the second storage portion 10B. Therefore, it is easy to secure a larger volume of the second storage unit 10B than in the case where the storage unit constituting member 6 constitutes the second storage unit 10B alone.
In addition, according to the present configuration, the partition wall 65 can increase the rigidity of the storage portion constituting member 6.
Further, according to the present configuration, the vibration transmitted to the storage portion constituting member 6 can be transmitted to the oil F stored in the oil chambers 10Ba and 10Bb by the wall portion 65 formed so as to be divided into the first oil chamber 10Ba and the second oil chamber 10 Bb. That is, the vibration transmitted to the storage unit constituting member 6 can be efficiently transmitted to the oil F stored in the second storage unit 10B via the partition wall 65. This can improve the effect of damping the vibration generated by the oil F stored in the second storage unit 10B. Therefore, gear noise can be suppressed to be smaller.
Technical solution 5
In the configuration in which the first elastic member 71 is the sealing member and the storage portion constituting member 6 has the partition wall portion 65, the second oil chamber 10Bb is preferably configured using the partition wall portion 65 and the bearing support portion 24.
With this configuration, the second oil chamber 10Bb can be formed appropriately by utilizing the space surrounded by at least the partition wall 65 and the bearing support portion 24. Thus, the volume of the second storage unit 10B can be secured to be larger than the volume of the second oil chamber 10Bb, compared to the case where the storage unit constituting member 6 constitutes the second storage unit 10B alone.
Technical scheme 6
Further, the gear mechanism 1 preferably includes: an input member 3 disposed on a first shaft a1 and drivingly coupled to the drive force source MG; a pinion mechanism 4 disposed on a second shaft a2 different from the first shaft a 1; and a differential gear device 5 disposed on a third shaft A3 different from the first shaft a1 and the second shaft a2 and distributing the driving force transmitted from the driving force source MG to the pair of wheels, wherein the differential gear device 5 is supported rotatably with respect to the housing 2 by a first differential bearing 95 and a second differential bearing 96, and a first supply passage P1 is provided for supplying the oil F stored in the first oil chamber 10Ba to the input member 3, the counter gear mechanism 4, and the first differential bearing 95; and a second supply passage P2 for supplying the oil F stored in the second oil chamber 10Bb to the second differential bearing 96.
With this configuration, the oil F can be appropriately supplied to each part of the gear mechanism 1 through the first supply passage P1 and the second supply passage P2.
[ possibility of Industrial utilization ]
The technique of the present invention can be applied to a vehicle drive transmission device that transmits drive force between a drive force source and a pair of wheels.

Claims (6)

1. A vehicle drive transmission device that transmits drive force between a drive force source and a pair of wheels, comprising:
a gear mechanism provided in a power transmission path connecting the driving force source and the pair of wheels;
a housing having a first reservoir for accumulating oil and housing the gear mechanism; and
a storage unit constituting member which is arranged above the first storage unit and constitutes a second storage unit for storing oil,
the gear mechanism includes: a gear, a shaft member coupled to the gear, and a bearing rotatably supporting the shaft member with respect to the housing,
the housing has a bearing support portion for supporting the bearing,
the storage portion constituting member has a first contact portion that contacts the bearing support portion via a first elastic member having elasticity.
2. The drive transmission device for a vehicle according to claim 1,
the housing includes a first side wall portion extending in a radial direction,
the bearing support portion includes: a projection projecting in the axial direction from the first side wall portion so as to support the bearing from the outside in the radial direction,
the first contact portion is in contact with the protrusion portion via the first elastic member.
3. The drive transmission device for a vehicle according to claim 1 or 2,
the housing includes a second side wall portion extending in a radial direction,
the second side wall portion is disposed on a side opposite to the side of the bearing support portion in the axial direction with respect to the storage portion constituting member,
the storage portion constituting member has a second contact portion that contacts the second side wall portion via a second elastic member having elasticity.
4. The drive transmission device for a vehicle according to any one of claims 1 to 3,
the first elastic member is a seal member that closes a gap between the storage portion constituting member and the bearing support portion,
the storage portion constituting member has a partition wall portion extending upward from the first contact portion,
the partition wall portion partitions the second storage portion into: a first oil chamber located on an opposite side of the dividing wall portion from a side of the bearing support portion in an axial direction; and a second oil chamber located on one side of the bearing support portion in the axial direction with respect to the partition wall portion.
5. The drive transmission device for a vehicle according to claim 4,
the second oil chamber is configured using the partition wall and the bearing support portion.
6. The drive transmission device for a vehicle according to claim 4 or 5,
the gear mechanism includes:
an input member disposed on the first shaft and drivingly coupled to the driving force source;
a pinion mechanism disposed on a second shaft different from the first shaft; and
a differential gear device disposed on a third axis different from the first axis and the second axis, and distributing a driving force transmitted from one side of the driving force source to a pair of the wheels,
the differential gear device is supported rotatably with respect to the housing by a first differential bearing and a second differential bearing,
a first supply path for supplying the oil stored in the first oil chamber to the input member, the auxiliary gear mechanism, and the first differential bearing; and a second supply path that supplies the oil stored in the second oil chamber to the second differential bearing.
CN202010070194.8A 2019-02-07 2020-01-21 Drive transmission device for vehicle Pending CN111532121A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2019-020831 2019-02-07
JP2019020831 2019-02-07
JP2019-233272 2019-12-24
JP2019233272A JP7241670B2 (en) 2019-02-07 2019-12-24 Vehicle drive transmission device

Publications (1)

Publication Number Publication Date
CN111532121A true CN111532121A (en) 2020-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN111532121A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07269684A (en) * 1994-03-31 1995-10-20 Suzuki Motor Corp Lubricator for transaxle
JP2012237362A (en) * 2011-05-11 2012-12-06 Aisin Aw Co Ltd Vehicle drive device
JP2015178887A (en) * 2014-03-20 2015-10-08 株式会社ニフコ Baffle plate for differential mechanism
JP2018057243A (en) * 2016-09-30 2018-04-05 アイシン・エィ・ダブリュ株式会社 Vehicle drive device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07269684A (en) * 1994-03-31 1995-10-20 Suzuki Motor Corp Lubricator for transaxle
JP2012237362A (en) * 2011-05-11 2012-12-06 Aisin Aw Co Ltd Vehicle drive device
JP2015178887A (en) * 2014-03-20 2015-10-08 株式会社ニフコ Baffle plate for differential mechanism
JP2018057243A (en) * 2016-09-30 2018-04-05 アイシン・エィ・ダブリュ株式会社 Vehicle drive device

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