WO2010150698A1 - 変速機 - Google Patents
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- Publication number
- WO2010150698A1 WO2010150698A1 PCT/JP2010/060304 JP2010060304W WO2010150698A1 WO 2010150698 A1 WO2010150698 A1 WO 2010150698A1 JP 2010060304 W JP2010060304 W JP 2010060304W WO 2010150698 A1 WO2010150698 A1 WO 2010150698A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricating oil
- gear
- receiver
- transmission
- gears
- 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
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Classifications
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- 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
-
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
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- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- 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
- F16H57/0409—Features relating to lubrication or cooling or heating characterised by increasing efficiency, e.g. by reducing splash losses
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- 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
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- 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
- F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H2003/0931—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
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- 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19991—Lubrication
Definitions
- the present invention relates to a transmission that performs lubrication by scooping up lubricating oil with a transmission gear.
- Patent Document 1 in which a lubrication mechanism of a transmission having an oil receiver is disclosed, lubricating oil scooped up by a transmission gear is received by the oil receiver, and the tooth surfaces of other transmission gears and the interior of each shaft Lubricating oil is supplied to The oil receiver is disposed above the transmission gear and has a hook shape opened upward. Then, the lubricating oil scraped up and scattered by the rotation of the transmission gear is received by the opening of the bag, and the received lubricating oil is circulated in the oil receiver and supplied to each part.
- the lubricating oil scraped up by the rotation of the transmission gear is configured to fly perpendicularly to the longitudinal direction of the oil receiver. It is difficult to recover the lubricating oil that passes below. As a result, the required amount of lubricating oil cannot be collected by the oil receiver and cannot be sufficiently supplied, and the tooth surfaces of other transmission gears and the inside of each shaft may become insufficient. In addition, since the entire amount of lubricating oil scraped up by the rotation of the speed change gear cannot be used for lubrication, the speed change gear is performing useless work, which in turn results in transmission power loss, which contributes to vehicle drive and fuel efficiency. There is a risk of significant impact.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a transmission having an efficient lubrication structure with less power loss that can supply scraped lubricating oil to each lubrication point without waste. .
- the invention according to claim 1 is characterized in that a case, a shaft body axially supported in the case, and a shaft that is supported by the shaft body and rotated by the shift clutch.
- a plurality of gears to be connected and a lower portion of the plurality of gears are immersed in a lubricating oil stored in a lubricating oil storage region formed in a lower portion of the case, and rotate to scrape the lubricating oil upward.
- the large-diameter gear to be raised and the lubricating oil scooped up above are collected and arranged to extend in the direction of the rotation axis of the large-diameter gear in order to circulate the collected lubricating oil to the lubrication location.
- the lubricating oil splashing is that it has an introduction portion for introducing the collecting portion of the receiver in flowing surface by inertial force of the lubricating oil.
- a feature of the invention according to claim 2 is that, in claim 1, the large-diameter gear is a gear that constantly rotates when the vehicle travels among the plurality of gears.
- the invention according to claim 3 is characterized in that, in claim 2, the transmission is coaxially supported by the case so as to be rotatable, and a drive-side gear among the plurality of gears is arranged coaxially. And a second input shaft, and a first output shaft and a second output shaft that are arranged in parallel with the first input shaft in the case, respectively, and the driven gears of the plurality of gears are rotatably supported.
- a dual clutch automatic transmission further comprising: a first clutch that transmits the rotational driving force of the prime mover to the first input shaft; and a dual clutch that has a second clutch that transmits the rotational driving force to the second input shaft.
- the large-diameter gear is a differential ring gear that is always rotationally connected to the first output shaft and the second output shaft.
- the receiver is provided with the vertical wall and the introduction portion.
- the vertical wall is introduced into the receiver collecting portion by causing the lubricant oil scattered between the receiver and the case above the receiver to collide with the wall surface of the vertical wall and flow down the wall surface.
- the introducing portion receives the lubricating oil scattered between the receiver and the large-diameter gear at the upper surface of the introducing portion, and flows the upper surface by the inertial force of the lubricating oil itself and introduces it into the collecting portion of the receiver.
- the vertical wall and the introduction portion are provided in the receiver in this way, the lubricating oil scraped up by the large-diameter gear cannot pass above and below the receiver, and a large amount is collected and the lubricating oil collecting portion of the receiver is collected. To be introduced.
- the lubricating oil scooped up by the large-diameter gear is used for lubrication without waste, so that there is no risk that the tooth surfaces of other transmission gears and the interior of each shaft will run out of lubricating oil, improving the reliability.
- the lubricating oil can be circulated efficiently, power loss as a transmission is greatly suppressed.
- the large-diameter gear always rotates when the vehicle travels.
- the lubricating oil is always scooped up by the large-diameter gear when the vehicle is running, and is not interrupted. Accordingly, since the lubricating oil is reliably supplied to the tooth surfaces of the other transmission gears and the respective shafts, which are the lubrication points, there is no possibility that the lubricating oil will be insufficient.
- the transmission is a dual clutch type automatic transmission.
- the other input shaft when one input shaft is connected to the internal combustion engine by a clutch, the other input shaft may not be driven to rotate, but one of the output shafts rotates to one of the input shafts when the vehicle travels. It is driven.
- a differential ring gear that is always rotationally connected to the first output shaft and the second output shaft is applied to the large-diameter gear that scoops up the lubricating oil, so that it can always be used during vehicle travel. Lubricating oil is scraped up and the lubricity of the transmission is improved.
- a differential ring gear in a transmission generally has a large diameter among a plurality of gears accommodated in a case and is often positioned below. Therefore, by using the large-diameter gear as a differential ring gear, the lubricating oil can be scraped more efficiently from the lubricating oil storage area formed at the bottom of the case.
- the differential ring gear is configured as a final gear in the transmission. Therefore, the stirring resistance applied to the ring gear is transmitted to the internal combustion engine that is the drive source via a plurality of gears having a reduction ratio corresponding to the shift position. Therefore, the power resistance acting on the internal combustion engine can be reduced by the stirring resistance applied to the large-diameter gear.
- FIG. 3 is a diagram viewed from the axial direction of the transmission 1 according to the first embodiment, and is a configuration diagram illustrating a section 1-1 of the receiver 92 in FIG. 2 and some gears.
- FIG. 2 is a schematic cross-sectional view seen from the direction A in FIG. 1, and is a diagram schematically showing a sliding portion and lubricating oil housed in the case 10 with the transmission case 11 and the clutch housing 12 of the case 10 as cross sections.
- 1 is a skeleton diagram showing an overall structure of a transmission 1.
- FIG. 3 is a partial perspective view of a receiver 92.
- FIG. 9 is a diagram of the transmission 111 according to the second embodiment viewed from the axial direction, and is a configuration diagram illustrating a section 5-5 of the receiver 192 in FIG. 6 and some gears.
- FIG. 6 is a schematic cross-sectional view seen from the direction B in FIG. 5, and schematically shows a sliding portion and lubricating oil housed in the case 10 with the transmission case 11 and the clutch housing 12 of the case 10 as cross sections.
- the transmission 1 is a dual clutch type automatic transmission, as shown in FIGS. 1 to 3, and includes a first input shaft 21, a second input shaft 22, and a first output shaft 31 as shaft bodies in a case 10. , And a second output shaft 32. Further, in the case 10, there are a dual clutch 40, drive gears 51 to 57 for the respective speed stages (corresponding to “drive side gears” of the present invention), final reduction drive gears 58 and 68, and a driven gear 61 for each speed stage. ⁇ 67, reverse gear 70, ring gear 80 (corresponding to “large diameter gear” of the present invention), and lubrication mechanism 90 are provided. The final reduction drive gears 58 and 68, the driven gears 61 to 67, and the reverse gear 70 correspond to the “driven gear” of the present invention.
- the case 10 has a mission case 11 and a clutch housing 12 as shown in FIG.
- the mission case 11 supports each shaft by a plurality of bearings, and stores lubricating oil for lubricating the lubricated portion including the plurality of gears.
- the clutch housing 12 has an end face that faces the end face of the mission case 11, and is fixed to the mission case 11 by bolt fastening.
- the clutch housing 12 supports each shaft by a plurality of bearings and accommodates a dual clutch 40 therein.
- the first input shaft 21 is formed in a hollow shaft shape, and is rotatably supported with respect to the transmission case 11 by a bearing. In addition, a portion for supporting the bearing and a plurality of external splines are formed on the outer peripheral surface of the first input shaft 21.
- the first input shaft 21 is directly formed with a first speed drive gear 51 and a large diameter third speed drive gear 53.
- the fifth speed drive gear 55 and the seventh speed drive gear 57 are press-fitted into the external splines formed on the outer peripheral surface of the first input shaft 21 by spline fitting. Further, the first input shaft 21 is formed with a connecting portion that is connected to the first clutch 41 of the dual clutch 40.
- the second input shaft 22 is formed in a hollow shaft shape, is rotatably supported on a part of the outer periphery of the first input shaft 21 via a plurality of bearings, and rotates with respect to the clutch housing 12 by the bearings. It is supported as possible. That is, the second input shaft 22 is disposed so as to be rotatable relative to the first input shaft 21 concentrically. Similarly to the first input shaft 21, a portion for supporting the bearing and a plurality of external gears are formed on the outer peripheral surface of the second input shaft 22. A second speed drive gear 52, a large-diameter fourth speed drive gear 54, and a 6-side drive gear 56 are formed on the second input shaft 22. Further, the second input shaft 22 is formed with a connecting portion that is connected to the second clutch 42 of the dual clutch 40.
- the first output shaft 31 is rotatably supported with respect to the transmission case 11 and the clutch housing 12 by a bearing, and is disposed in the transmission case 11 in parallel with the first input shaft 21.
- a final reduction drive gear 58 is formed on the outer peripheral surface of the first output shaft 31, and a portion that supports the bearing and a plurality of external splines are formed.
- the hubs 201 of the shift clutches 101 and 103 are press-fitted into the external splines of the first output shaft 31 by spline fitting.
- the final reduction drive gear 58 meshes with a ring gear 80 of a differential (differential mechanism).
- the first output shaft 31 is formed with a support portion that supports the first-speed driven gear 61, the third-speed driven gear 63, the fourth-speed driven gear 64, and the reverse gear 70 so as to be freely rotatable.
- the second output shaft 32 is rotatably supported with respect to the transmission case 11 and the clutch housing 12 by a bearing, and is disposed in parallel to the first input shaft 21 in the transmission case 11. Further, as with the first output shaft 31, a final reduction drive gear 68 is formed on the outer peripheral surface of the second output shaft 32, and a portion that supports the bearing and a plurality of external splines are formed. The hubs 201 of the shift clutches 102 and 104 are press-fitted into the external splines of the second output shaft 32 by spline fitting. The final reduction drive gear 68 meshes with a differential ring gear 80. Further, the second output shaft 32 is formed with a support portion that supports the second-speed driven gear 62, the fifth-speed driven gear 65, the sixth-speed driven gear 66, and the seventh-speed driven gear 67 so as to be freely rotatable.
- the dual clutch 40 includes a first clutch 41 that transmits the rotational driving force of the internal combustion engine E / G (corresponding to “the prime mover” of the present invention) to the first input shaft 21, And a second clutch 42 that transmits the driving force of the internal combustion engine E / G to the second input shaft 22.
- the dual clutch 40 is accommodated in the clutch housing 12 on the right side in FIG. 2 and is provided concentrically with the first input shaft 21 and the second input shaft 22.
- the first clutch 41 is connected to the connecting shaft portion of the first input shaft 21, and the second clutch 42 is connected to the connecting shaft portion of the second input shaft 22.
- the first and second input shafts 21 and 22 are sequentially operated to switch the connection with the internal combustion engine E / G by sequentially operating the first and second clutches 41 and 42. Changes are possible.
- the reverse gear 70 is provided on the support portion of the reverse gear 70 formed on the first output shaft 31 so as to be free-wheeling.
- the reverse gear 70 is always meshed with a small-diameter gear 62 a formed integrally with the second-speed driven gear 62.
- Each shift clutch 101, 102, 103, 104 includes a hub 201 and a sleeve 202.
- the hub 201 has a hollow disk shape formed with internal splines and external splines, and is press-fitted into the external splines of the first output shaft 31 or the second output shaft 32 by spline fitting.
- the sleeve 202 meshes with the external spline of the hub 201 so as to be slidable in the axial direction with respect to the hub 201, and meshes with the driven gears 61 to 67 of the gear stage or the synchro gear portion of the reverse gear 70 when slid. It becomes possible.
- the sleeve 202 slides in the axial direction to switch between the meshing state and the non-meshing state of the gears driven gears 61 to 67 and the synchro gear (not shown) provided in the reverse gear 70, and the driven gears 61 to 67 or the reverse gear 70 and the first output shaft 31 and the second output shaft 32 are selectively connected.
- the ring gear 80 is meshed with the final reduction drive gear 58 and the final reduction drive gear 68 so as to be always rotationally connected to the first output shaft 31 and the second output shaft 32.
- the ring gear 80 has a larger diameter and a larger number of teeth than the final reduction drive gears 58 and 68.
- the ring gear 80 is connected to a drive wheel via a rotating shaft 80a as a shaft body supported by the case 10 and a differential mechanism (not shown). That is, the differential ring gear 80 is configured as a final gear in the transmission, and is a gear that always rotates when the vehicle travels. Further, the ring gear 80 is located below the other gears. And the lower part of the ring gear 80 is immersed in the lubricating oil stored in the bottom part of the mission case 11, and the lubricating oil can be scraped up.
- the separator 93 is arcuate when viewed from the axial direction of the transmission 1, and extends from the lubricating oil storage area 91 to the outside of the lubricating oil storage area 91 in the peripheral portion of the ring gear 80.
- the ring gear 80 is formed so as to surround the periphery.
- the separator 93 surrounds the peripheral edge portion of the ring gear 80 to stabilize the amount of oil scraped up by the rotation of the ring gear 80 and the direction of scattering.
- the separator 93 is formed in a U shape so as to follow the shape of the axial cross section of the peripheral edge of the ring gear 80.
- the separator 93 is formed in a U-shaped cross-section by overlapping the bottom portions of two side pieces 93L and 93R having an L-shaped cross section that can be separated on the left and right sides.
- the left piece 93L is fixed to the mission case 11 with bolts (not shown).
- the right side piece 93 ⁇ / b> R of the separator 93 is fixed to the clutch housing 12 with a bolt (not shown).
- the separator 93 sandwiches both side surfaces of the ring gear 80 from the left and right sides so as to face the outer peripheral surface. Assembled into.
- the lower end of the separator 93 is provided in the lubricating oil storage area 91. That is, the lower part of the separator 93 partitions the lubricating oil stored in the mission case 11 and the lubricating oil stored near the periphery of the ring gear 80. Thereby, the amount of lubricating oil stirred by the rotating ring gear 80 is set.
- the lubricating mechanism 90 has a lubricating oil storage area 91 and a receiver 92.
- the lubricating oil storage area 91 is an area for storing lubricating oil at the bottom of the mission case 11 as shown in FIGS.
- the lubricating oil storage area 91 can scrape up the stored lubricating oil upward of the ring gear 80 by the rotation of the ring gear 80. Further, the lubricating oil scraped up by the ring gear 80 scatters at the upper part of the ring gear 80 and is collected by the receiver 92.
- the receiver 92 is a separate member from the transmission case 11 that is fixed to the upper part of the transmission case 11 by bolt fastening.
- the receiver 92 has a collection part 92a for receiving (collecting) the lubricating oil provided at one end as shown in FIG. Further, the receiver 92 has a vertical wall 92d for collecting and introducing the lubricating oil scattered above the receiver 92 into the collecting portion 92a by colliding with the surface and flowing down the surface, and between the receiver 92 and the ring gear 80.
- An introduction portion 94 for receiving the lubricating oil scattered toward the surface on the surface and sliding the surface using the inertial force of the lubricating oil to be introduced into the collecting portion 92a.
- the introduction part 94 includes an introduction path 94a having side walls 94d on both sides and a tongue part 94b having no side walls. Further, the receiver 92 circulates the collected lubricating oil and supplies it to each lubricating location, and a supply port 92c formed at the other end for supplying the lubricating oil to the output shafts 31, 32, etc.
- the lubrication points referred to here are the tooth surfaces of the gears to which the lubricating oil is supplied and lubricated from the outside and the shift clutches 101 to 104, and the gears to which the lubricating oil is supplied and lubricated from the respective shafts.
- the support part which is a bearing.
- the receiver 92 extends in the direction of the rotation axis of the ring gear 80, and is arranged at a predetermined angle downward from one end.
- the channel 92b of the receiver 92 is formed in a bowl shape in which a cross section orthogonal to the rotation axis direction of the ring gear 80 is U-shaped and the upper side is opened.
- the end portion of one end of the receiver 92 is formed with an introduction path 94a constituting the introduction portion 94 by being bent at a right angle and extending a predetermined amount with the channel 92b having a U-shaped cross-sectional shape.
- the introduction path 94 a is formed and arranged so that the upper surface of the bottom wall 94 c is substantially tangent to the outer periphery of the ring gear 80 when the upper surface of the bottom wall 94 c of the introduction path 94 a is extended as it is.
- the inner distance between both side walls 94d of the introduction path 94a is formed with a width that substantially matches the inner distance between the left piece 93L and the right piece 93R of the separator 93 surrounding the ring gear 80. Further, end surfaces 94e of both side walls 94d of the introduction path 94a are in contact with end surfaces 93d of the upper end portion 93a of the separator 93.
- the bottom wall 94c of the introduction path 94a extends from the position where both side walls 94d are in contact with the end surface 93d of the separator 93 toward the outer peripheral surface of the ring gear 80. And it extends to a position where a slight gap is secured between the lower surface of the bottom wall 94 c and the outer peripheral surface of the ring gear 80, and a tongue portion 94 b constituting the introduction portion 94 is formed.
- the collection part 92a is provided in the bending part of the L-shaped receiver 92, as shown in FIG.
- the collection part 92a is a part for collecting the lubricating oil that is scooped up and scattered by the rotation of the ring gear 80, and is therefore disposed at a position where the scattered lubricating oil generally drops.
- a vertical wall 92d is erected on the side wall that is perpendicular to the direction in which the surface of the lubricating oil that has been scraped up and scattered by the rotation of the ring gear 80 on the side wall that forms the collecting portion 92a.
- the vertical wall 92d introduces the lubricating oil which is about to pass above the receiver 92 out of the scattered lubricating oil into the collecting portion 92a by colliding with the flat surface 92e of the vertical wall 92d and flowing down the flat surface 92e.
- the vertical wall 92 d extends to the vicinity of the upper inner wall of the mission case 11. On both sides of the flat surface 92e of the vertical wall 92d, there are provided lubricating oil that scatters and bent portions 92f that are bent at right angles so that the surfaces are parallel to each other. Further, the vertical wall 92d is scraped up by the rotation of the ring gear 80, and is disposed at a position that can cover the splashing range of the lubricating oil scattered above the receiver 92, and is formed in a predetermined size that can be covered. In the above description, the vertical wall 92d may not be formed integrally with the receiver 92 but may be a separate body.
- the bent portion 92f of the vertical wall 92d is for making it difficult for the scattered lubricating oil to escape from both ends of the vertical wall 92d, and it may be provided only on one side of the both ends or may not be provided on both ends. A corresponding effect can be expected.
- the upper surface of the bottom wall 94c of the introduction path 94a, the upper surface of the tongue portion 94b, and the collision plane 92e of the vertical wall 92d with the scattered lubricating oil have a low ⁇ in order to improve the fluidity of the lubricating oil. It is preferable that a coating having, for example, Teflon (registered trademark) is applied.
- the flow path 92 b extends in the direction of the rotation axis of the ring gear 80, distributes the lubricating oil collected in the collecting portion 92 a, and supplies the lubricating oil to each lubricating portion of the transmission 1.
- the flow passage 92b is provided with a plurality of downflow ports above the lubrication points.
- 92g (FIG. 4) is provided. Note that the flow path 92b may have a deformed shape so as to correspond to the position of each lubrication location, in order to reliably supply the lubricating oil from directly above each lubrication location.
- the supply port 92c is formed at the other end of the receiver 92 and is inserted into a horizontal hole communicating with the inflow groove 11a.
- the receiver 92 allows the lubricating oil to flow from the supply port 92c into the lateral hole communicating with the inflow groove 11a, thereby allowing the first output shaft 31 and the second output shaft 32 having the through holes to be formed through the inflow groove 11a.
- Lubricating oil is supplied to the through hole.
- the inflow groove 11a is an oil passage for allowing lubricating oil to flow into the through holes of the shafts 31, 32, etc., and covers the end opening on the same side as the other end of the receiver 92 in the transmission case 11. 11b.
- the control device for the automatic gear transmission performs the first and second operations of the dual clutch 40 according to the operating state of the vehicle such as the accelerator opening, the engine rotation speed, and the vehicle speed.
- the clutches 41 and 42 and the shift clutches 101 to 104 are operated.
- the first and second clutches 41 and 42 of the dual clutch 40 are both released, and the shift clutches 101 to 104 are in the neutral position.
- the control device slides the sleeve 202 of the shift clutch 101 and moves the driven gear 61 of the gear stage.
- the first gear is formed by meshing with the synchro gear portion so that the other clutches are in the neutral position.
- the control device gradually increases the engagement force of the first clutch 41 of the dual clutch 40 in accordance with the accelerator opening, thereby driving. Torque is transmitted from the first clutch 41 to the differential ring gear 80 via the first input shaft 21, the first speed gear trains 51 and 61, the shift clutch 101, the first output shaft 31, and the final reduction drive gear 58. Start running at the first speed.
- the control device first slides the sleeve 202 of the shift clutch 102 and synchronizes the driven gear 62 of the shift stage. After engaging with the gear portion to form the second speed, the dual clutch 40 is switched to the second clutch 42 side to switch to the second speed travel, and then the sleeve 202 of the shift clutch 101 is released. As a result, the drive torque is transmitted from the second clutch 42 to the differential ring gear 80 via the second input shaft 22, the second speed gear trains 52 and 62, the shift clutch 102, the second output shaft 32, and the final reduction drive gear 68. The car travels at the second speed. Similarly, in the third speed to the seventh speed, the control device sequentially selects the gear position according to the operation state of the vehicle and alternately selects the first clutch 41 and the second clutch 42 to suit the state. So that the vehicle can run at the selected gear position.
- the control device detects this and slides the sleeve 202 included in the shift clutch 103, and the synchro gear portion of the reverse gear 70.
- the reverse gear is formed so that the other clutches are in the neutral position.
- the reverse gear 70 is always meshed with a small-diameter gear 62a formed integrally with the driven gear 62 of the shift stage.
- the drive torque is differential from the second clutch 42 through the second input shaft 22, the second speed gear trains 52, 62, 62 a, the reverse gear 70, the shift clutch 103, the first output shaft 31, and the final reduction drive gear 58.
- the ring gear 80 is transmitted to the vehicle, and the automobile starts to reverse.
- the differential ring gear 80 is always rotated through the final reduction drive gear 58 or 68 of the transmission 1 during forward movement particularly requiring lubrication inside the transmission of the automobile. Therefore, the lubricating oil is constantly scraped up from the lubricating oil storage area 91 constituting the lubricating mechanism 90 in which the lubricating oil is stored at the bottom of the mission case 11. The lubricating oil scraped up by the rotation of the ring gear 80 is scattered toward the outer peripheral tangential direction of the ring gear 80.
- a separator 93 is formed in the ring gear 80 so as to surround the peripheral edge of the ring gear 80 from the lubricating oil storage area 91 to the outside of the lubricating oil storage area 91 in the peripheral edge of the ring gear 80. Most of the lubricating oil scattered by this is scattered in the direction in which the receiver 92 is arranged, which is the direction in which the upper end portion 93a of the separator 93 is opened.
- the receiver 92 has a bowl shape opened upward. For this reason, a predetermined proportion of the scattered lubricating oil falls and is collected in the collecting portion 92a formed inside the bowl shape.
- the lubricating oil scattered above the receiver 92 collides with the flat surface 92e of the vertical wall 92d provided in the receiver 92, flows down on the flat surface 92e, and is collected in the collecting portion 92a provided below the vertical wall 92d. Is done.
- the lubricating oil splashed in the direction between the receiver 92 and the ring gear 80 is guided by the tongue 94b and the introduction path 94a which are the introduction portions 94 provided in the receiver 92, and collected by the collection portion 92a. Is done. That is, most of the lubricating oil scattered in the direction between the receiver 92 and the ring gear 80 is the upper surface of the tongue 94b and the bottom wall 94c of the introduction path 94a formed continuously with the upper surface of the tongue 94b. In response to the inertial force of each lubricating oil, it flows on the upper surface, rises obliquely upward, and is collected by the collecting portion 92a.
- the upper surface of the tongue 94b and the bottom wall 94c of the introduction path 94a is formed so that the lubricating oil rises upward in the direction of gravity.
- the inventor has confirmed that the lubricating oil can be sufficiently raised upward in the gravitational direction because the speed of the lubricating oil scraped up by the rotation of the large-diameter ring gear 80 is large and the inertial force is also large.
- the flow path 92b flows down from the collecting section 92a by gravity, and an appropriate amount of lubricating oil flows down or drops from a flow-down port 92g provided at an appropriate position to a lubricating surface such as a tooth surface of each gear or each shift clutch.
- Lubricating oil is supplied from the supply port 92c formed at the other end of the receiver 92 to the through-holes of the first output shaft 31 and the second output shaft 32 via the inflow groove 11a to form a support portion for each gear. Sufficient lubrication is performed on the bearing.
- the receiver 92 is provided with a vertical wall 92d and an introduction path 94.
- the lubricating oil scraped up by the ring gear 80 as a large-diameter gear is collected without waste by the receiver 92 and used for lubrication. Therefore, the tooth surfaces of the transmission gears 61 to 67 as the lubrication points and the shafts 31 are used. , 32 and the like are not likely to run out of lubricating oil, and reliability is improved.
- the lubricating oil can be circulated efficiently, power loss as a transmission is greatly suppressed.
- the transmission 1 is a dual clutch type automatic transmission.
- the transmission 1 when one input shaft 21 or 22 is connected to the internal combustion engine E / G by the clutch 41 or 42, the other input shaft 22 or 21 may not be rotated.
- the output shafts 31 and 32 are rotationally driven by one of the input shafts 21 or 22 when the vehicle is traveling.
- Lubricating oil is always scraped up when the vehicle is running.
- the ring gear 80 generally has a large diameter among a plurality of gears accommodated in the mission case 11 and is often positioned below. Therefore, by adopting a configuration in which the lubricating oil is scraped up by the ring gear 80, the lubricating oil can be scraped more efficiently from the lubricating oil storage area 91 where the lubricating oil is stored at the bottom of the mission case 11.
- the differential ring gear 80 is configured as a final gear in the transmission 1. Therefore, the stirring resistance applied to the ring gear 80 is transmitted to the internal combustion engine E / G, which is a driving source, via a plurality of gears having a reduction ratio corresponding to the shift position. Therefore, the influence exerted on the internal combustion engine E / G by the stirring resistance of the ring gear 80 can be reduced.
- the configuration of the transmission 111 of the second embodiment is mainly different from the transmission 1 of the first embodiment in that it is a dual-clutch automatic transmission, but a manual transmission. Accordingly, the configuration of gears and the like in the transmission 111 is different. Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted. Since the operation of the manual transmission 111 is well known, a description thereof will be omitted, and only the differences will be described below.
- the transmission 111 which is a manual transmission includes an input shaft 123 and an output shaft 133 as shaft bodies, drive gears 151 to 156 for each gear stage,
- the gears include driven gears 161 to 166 at a gear stage, a final reduction drive gear 168, a reverse gear 170, a ring gear 80 (corresponding to the “large diameter gear” of the present invention), and a lubrication mechanism 190.
- the ring gear 80 is provided with a separator 193. As shown in FIG. 5, the separator 193 is arcuate when viewed from the axial direction of the transmission 111 like the separator 93 in the first embodiment, and from the lubricating oil storage area 91 in the peripheral portion of the ring gear 80.
- the outer periphery of the lubricating oil storage area 91 is formed so as to surround the periphery of the ring gear 80.
- the input shaft 123 is formed in a shaft shape, and is supported rotatably with respect to the mission case 11 by a bearing. Further, a small-diameter gear 157 that meshes with the first-speed drive gear 151, the second-speed drive gear 152, and the reverse gear 170 via a counter gear (not shown) is directly formed on the outer peripheral surface of the input shaft 123. Further, on the outer peripheral surface of the input shaft 123, a support portion that supports each gear so as to be freely rotatable and a plurality of external splines are formed.
- the hubs of the shift clutches are press-fitted into the external splines of the input shaft 123 by spline fitting, and the three-speed drive gear 153 to the six-speed drive gear 156 are supported on the support portion in a freely rotatable manner.
- the input shaft 123 is connected to a crankshaft of an internal combustion engine E / G (not shown) via a clutch, and inputs driving force to the transmission 111. That is, the input shaft 123 corresponds to the first input shaft 21 and the second input shaft 22 of the first embodiment.
- a through hole is formed in the input shaft 123 through which lubricating oil for lubricating the support portion of each gear, which is a lubrication point, flows.
- the output shaft 133 is rotatably supported with respect to the transmission case 11 and the clutch housing 12 by a bearing, and is disposed in parallel with the input shaft 123 in the transmission case 11. Further, the third speed driven gear 163 to the sixth speed driven gear 166 and the final reduction drive gear 168 are directly formed on the outer peripheral surface of the output shaft 133. Further, on the outer peripheral surface of the output shaft 133, a support portion that supports each gear so as to be freely rotatable and a plurality of external splines are formed.
- the hubs of the shift clutches are press-fitted into the external splines of the output shaft 133 by spline fitting, and the first-speed driven gear 161, the second-speed driven gear 162, and the reverse gear 170 are supported in the support portion so as to be freely rotatable. Has been.
- the output shaft 133 is rotationally connected to one of the driven gears, and rotates a differential ring gear 80 via a final reduction drive gear 168 formed on the output shaft 133 to output a driving force from the transmission 111.
- the output shaft 133 corresponds to the first output shaft 31 and the second output shaft 32 of the first embodiment.
- a through hole through which the lubricating oil flows is formed inside the output shaft 133.
- the lubricating oil is allowed to flow through the inflow groove 11a provided in the cover 11b that closes the opening on the other end side of the transmission case 11, so that the input shaft 123 and the output shaft 133 Lubricating oil is supplied to the through holes, and the support portions of the respective gears as lubrication points are lubricated.
- the ring gear 80 is always rotationally connected to the output shaft 133 by meshing with the final reduction drive gear 168. Further, the ring gear 80 has a larger diameter and a larger number of teeth than the final reduction drive gear 168. That is, the differential ring gear 80 is configured as a final gear in the transmission, and is a gear that always rotates when the vehicle travels. Further, the ring gear 80 is located below the other gears. And the lower part of the ring gear 80 is immersed in the lubricating oil stored in the bottom part of the mission case 11, and the lubricating oil can be scraped up.
- the lubrication mechanism 190 has the same configuration as that of the lubrication mechanism 90 of the first embodiment, and includes a lubricating oil storage area 91 and a receiver 192.
- the receiver 192 includes a collection unit 192a (corresponding to the collection unit 92a of the first embodiment) for receiving (collecting) the lubricating oil provided at one end as shown in FIGS.
- a vertical wall 192d (corresponding to the vertical wall 92d in the first embodiment) for collecting and introducing the lubricating oil scattered above 192 into the collecting section 192a by colliding with the surface and flowing down the surface, and a receiver
- the introduction part 194 (the first part) for receiving the lubricating oil scattered between the 192 and the ring gear 80 on the surface, collecting the sliding surface by utilizing the inertial force of the lubricating oil, and introducing it to the collecting part 192a Equivalent to the introduction portion 94 in the first embodiment. Similar to the introduction portion 94 of the first embodiment, the introduction portion 194 includes an introduction path 194a having side walls on both sides and a tongue portion 194b having no side walls.
- the receiver 192 has a flow path 192b (corresponding to the flow path 92b of the first embodiment) for circulating the collected lubricating oil to each lubrication location, and a supply port 192c (first first) formed at the other end. Equivalent to the supply port 92c of the embodiment). As described above, the supply port 192c supplies lubricating oil to the insides of the shafts 123, 133, etc. via the inflow grooves 11a provided in the cover 11b of the mission case 11, and lubricates the support portions of the gears as lubrication points. .
- the lubricating oil is always scraped up above the ring gear 80 by the differential ring gear 80 that is always rotated when the vehicle is running.
- the scraped lubricating oil is effectively collected by the lubrication mechanism 190 having the same function as the lubrication mechanism 90, and efficiently circulated in the mission case 11, thereby providing the same effect as that of the first embodiment. Is obtained.
- the introduction portions 94 and 194 of the receivers 92 and 192 are not provided with the introduction paths 94a and 194a, and the introduction portions 94 and 194 are formed only by the tongue portions 94b and 194b. Well this can be expected to have a sufficient effect.
- the separators 93 and 193 are provided in the ring gear 80, but the separators 93 and 193 may be omitted. At that time, the tongues 94b and 194b of the respective receivers 94 and 194 of the receivers 92 and 192 may be abolished, and the introduction paths 94a and 194a provided with side walls may be extended to the vicinity of the outer periphery of the ring gear 80. Can be expected to have a corresponding effect.
- the transmission having a lubrication mechanism capable of effectively collecting and circulating the lubricating oil according to the present invention is suitable for use in various vehicles having the transmission mechanism.
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Abstract
Description
Claims (3)
- ケースと、
前記ケース内に軸線方向に軸承された軸体と、
前記軸体に支承されシフトクラッチにより前記軸体に回転連結される複数のギヤと、
前記複数のギヤのうち下部が前記ケース内の下方部分に形成された潤滑油貯留領域に収容された潤滑油に浸漬され、回転して前記潤滑油を上方に掻き上げる大径ギヤと、
前記上方に掻き上げられた潤滑油を捕集し、該捕集した潤滑油を潤滑箇所へ流通させるために前記大径ギヤの回転軸方向に延在して配置されたレシーバと、を備え、
前記レシーバは、前記掻き上げられた潤滑油のうち前記レシーバの上方を飛散する前記潤滑油を衝突させ表面を流下させて前記レシーバの捕集部に導入する縦壁と、前記レシーバと前記大径ギヤとの間に飛散する前記潤滑油を該潤滑油の慣性力によって表面を流動させ前記レシーバの捕集部に導入する導入部とを有していることを特徴とする変速機。 - 請求項1において、
前記大径ギヤは、前記複数のギヤのうち車両走行時に常に回転するギヤであることを特徴とする変速機。 - 請求項2において、前記変速機は、前記ケースに同軸で回転可能に支持され前記複数のギヤのうち駆動側のギヤが同軸に配置された第一入力軸および第二入力軸と、
前記ケースに前記第一入力軸と夫々平行に配置され、前記複数のギヤのうち従動側のギヤが夫々回転可能に支持された第一出力軸および第二出力軸と、
原動機の回転駆動力を前記第一入力軸に伝達する第一クラッチ及び前記回転駆動力を前記第二入力軸に伝達する第二クラッチを有するデュアルクラッチと、をさらに備えるデュアルクラッチ式自動変速機であり、
前記大径ギヤは、前記第一出力軸および前記第二出力軸に常時回転連結されているディファレンシャルのリングギヤであることを特徴とする変速機。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010800276789A CN102459961A (zh) | 2009-06-23 | 2010-06-17 | 变速器 |
| EP10792016A EP2447574A4 (en) | 2009-06-23 | 2010-06-17 | GEARBOX |
| US13/380,217 US20120096968A1 (en) | 2009-06-23 | 2010-06-17 | Transmission |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-148262 | 2009-06-23 | ||
| JP2009148262A JP2011007208A (ja) | 2009-06-23 | 2009-06-23 | 変速機 |
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| Publication Number | Publication Date |
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| WO2010150698A1 true WO2010150698A1 (ja) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2010/060304 Ceased WO2010150698A1 (ja) | 2009-06-23 | 2010-06-17 | 変速機 |
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|---|---|
| US (1) | US20120096968A1 (ja) |
| EP (1) | EP2447574A4 (ja) |
| JP (1) | JP2011007208A (ja) |
| KR (1) | KR20120109996A (ja) |
| CN (1) | CN102459961A (ja) |
| WO (1) | WO2010150698A1 (ja) |
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- 2009-06-23 JP JP2009148262A patent/JP2011007208A/ja active Pending
-
2010
- 2010-06-17 KR KR1020117030768A patent/KR20120109996A/ko not_active Withdrawn
- 2010-06-17 US US13/380,217 patent/US20120096968A1/en not_active Abandoned
- 2010-06-17 WO PCT/JP2010/060304 patent/WO2010150698A1/ja not_active Ceased
- 2010-06-17 EP EP10792016A patent/EP2447574A4/en not_active Withdrawn
- 2010-06-17 CN CN2010800276789A patent/CN102459961A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043762U (ja) * | 1983-09-01 | 1985-03-27 | ダイハツ工業株式会社 | 動力伝達装置の潤滑装置 |
| JPS6059864U (ja) * | 1983-09-30 | 1985-04-25 | 富士重工業株式会社 | 変速機の潤滑装置 |
| JP2002054729A (ja) * | 2000-08-10 | 2002-02-20 | Honda Motor Co Ltd | トランスミッションのオイルガタープレート |
| JP2007170491A (ja) | 2005-12-20 | 2007-07-05 | Aisin Ai Co Ltd | 変速機の潤滑機構 |
| JP2008240832A (ja) * | 2007-03-26 | 2008-10-09 | Mitsubishi Motors Corp | ダブルクラッチ変速機 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2447574A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619966A (zh) * | 2011-01-27 | 2012-08-01 | Zf腓德烈斯哈芬股份公司 | 用于轨道车辆的传动装置设施 |
| CN102619966B (zh) * | 2011-01-27 | 2016-05-25 | Zf腓德烈斯哈芬股份公司 | 用于轨道车辆的传动装置设施 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011007208A (ja) | 2011-01-13 |
| KR20120109996A (ko) | 2012-10-09 |
| EP2447574A1 (en) | 2012-05-02 |
| CN102459961A (zh) | 2012-05-16 |
| US20120096968A1 (en) | 2012-04-26 |
| EP2447574A4 (en) | 2012-11-14 |
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