JP5790138B2 - Lubricating oil supply device - Google Patents

Description

  The present invention relates to a lubricating oil supply apparatus.

  Conventionally, a technique has been proposed in which lubricating oil stored in a casing is scraped upward in a vertical direction by a rotating member and supplied to a predetermined position.

  For example, in a transmission lubrication structure described in Patent Document 1 below, an input shaft and a counter shaft are disposed substantially parallel in a transmission case, and a differential final gear is connected to the end of the counter shaft. A breather plate having a guide tube portion is provided in the transmission case substantially parallel to the final gear to form an inner space of the breather plate as a breather chamber, and the flow of the oil swept up by the final gear is A breather plate is also used as an oil guide that regulates the rotation direction of the final gear.

JP 2001-099275 A

  By the way, as a method of supplying lubricating oil to a predetermined supply unit by the rotation of the gear, conventionally, as in the above-described transmission lubrication structure, the one using the centrifugal force generated by the rotation of the final gear and the two gears There are some which push out lubricant oil by meshing. When the lubricating oil supply apparatus is configured using these two methods, the two guide passages are provided substantially along the vertical direction, and the lubricating oil supply unit is provided above the merged portion where the upper ends thereof merge. Will be configured. Then, when the supply speed (supply amount) of the lubricating oil in each guide passage is different, the oil may flow into the guide passage having a low supply speed from the guide passage having a high supply speed of the lubricant. Then, it is difficult for the lubricating oil supply unit to receive a sufficient amount of oil, and there is a problem that a shortage of lubricating oil occurs.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lubricating oil supply device that can improve lubrication performance by suppressing insufficient supply of lubricating oil.

The lubricating oil supply device of the present invention includes a first lubricating oil supplying means for supplying lubricating oil, a first guide passage having a cylindrical shape for guiding the lubricating oil supplied by the first lubricating oil supplying means, and a lubricating oil. A second lubricating oil supply means for supplying, a second guide passage having a cylindrical shape for guiding the lubricating oil supplied by the second lubricating oil supply means, and the first guide passage and the second guide passage. And a third lubricating oil supply means that scrapes and supplies the lubricating oil by rotating the gear, wherein the discharge port of the first guide passage and the discharge port of the second guide passage are in the direction of the rotation axis of the gear. The second guide passage is capable of guiding lubricating oil having a pressure higher than that of the lubricating oil guided by the first guide passage, and the discharge port of the second guide passage is Downstream in the rotational direction of the gear from the discharge port of the first guide passage Characterized in that it is disposed.

  In the lubricating oil supply apparatus, it is preferable that the first guide passage and the second guide passage are arranged so as to overlap in a rotation axis direction of the gear.

  In the lubricating oil supply device, there is provided a third guide passage for guiding the lubricating oil supplied by the first lubricating oil supply means to the second lubricating oil supply means, and the first lubricating oil supply means includes a reservoir The lubricant stored in the cylinder is scraped up by the rotation of the first gear, the first guide passage is guided to the third lubricant supply means above, and the third guide passage is guided to the second lubricant supply means. The second lubricating oil supply means pushes out the lubricating oil supplied from the third guide passage by meshing the first and second gears, and the second guide passage guides the third lubricating oil supply means above. It is preferable.

  The lubricating oil supply apparatus according to the present invention is provided with first and second guide passages that form a tubular shape and guide the lubricating oil to the gears, and the discharge ports of the first guide passages and the discharge ports of the second guide passages rotate the gears. Since the first and second guide passages have different lubricating oil pressures, the lubricating oil is disposed between the discharge port of the first guide passage and the discharge port of the second guide passage. This prevents the inflow of the oil and suppresses insufficient supply of the lubricating oil to improve the lubricating performance.

FIG. 1 is a schematic diagram illustrating a lubricating oil supply apparatus according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. 1 showing a cross section of the lubricating oil supply apparatus according to the first embodiment. FIG. 3 is a schematic diagram illustrating a lubricating oil supply apparatus according to Embodiment 2 of the present invention. FIG. 4 is a schematic diagram illustrating the operation of the lubricating oil supply apparatus according to the second embodiment.

  Embodiments of a lubricating oil supply apparatus according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment, and when there are a plurality of embodiments, it includes those configured by combining the embodiments.

Embodiment 1
1 is a schematic diagram illustrating a lubricating oil supply apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 illustrating a cross section of the lubricating oil supply apparatus according to Embodiment 1.

  As shown in FIGS. 1 and 2, the lubricating oil supply device according to the first embodiment is applied to, for example, a power transmission device 11 of a hybrid vehicle. The power transmission device 11 includes a case 12, a counter drive, and the like. The gear 13, the counter driven gear 14, the drive pinion gear 15, the MG2 reduction gear 16, the diff ring gear 17, the oil reservoir 18, and the passage member 19 are configured.

  The case 12 has a hollow shape, and accommodates the above-described counter drive gear 13, counter driven gear 14, drive pinion gear 15, MG2 reduction gear 16, diff ring gear 17, oil reservoir 18, and passage member 19. . In this case, the counter drive gear 13 is disposed on the front side in the vehicle front-rear direction with respect to the counter driven gear 14, and the MG2 reduction gear 16 and the diff ring gear 17 are disposed on the rear side in the vehicle front-rear direction with respect to the counter driven gear 14. Yes. The MG2 reduction gear 16 is arranged vertically above the counter driven gear 14 and the drive pinion gear 15, and the counter driven gear 14 and drive pinion gear 15 are arranged vertically above the diff ring gear 17. Yes.

  The counter drive gear 13 is connected to the output shaft of the engine (not shown) and the rotation shaft of the first motor generator (MG1) via a planetary gear mechanism, and the engine output is divided into the counter drive gear 13 and MG1. Can be input. The counter driven gear 14 and the drive pinion gear 15 are arranged on the same axis and can rotate together. The counter driven gear 14 meshes with the counter drive gear 13. The MG2 reduction gear 16 is connected to a rotation shaft 21 in the second motor generator (MG2) 20 and can rotate integrally with the rotation shaft 21. The MG2 reduction gear 16 meshes with the counter driven gear 14. The MG2 reduction gear 16 has a smaller diameter than the counter driven gear 14, and the output of the second motor generator 20 can be amplified and transmitted from the MG2 reduction gear 16 to the counter driven gear 14.

  The drive pinion gear 15 meshes with the diff ring gear 17, and the engine output torque input to the counter driven gear 14 and the output torque of the second motor generator 20 are transmitted to the diff ring gear 17 via the drive pinion gear 15. Communication is possible. The diff ring gear 17 is connected to a drive wheel (not shown) via a differential mechanism 22 and can rotate in conjunction with the rotation of the drive wheel. The counter drive gear 13, the counter driven gear 14, the drive pinion gear 15, the MG2 reduction gear 16, and the diff ring gear 17 are rotatable in the arrow direction shown in FIG.

  The case 12 has an oil storage portion 18 for storing lubricating oil (for example, ATF) in the lower portion in the vertical direction. The diff ring gear 17 is disposed in the lower part of the case 12, and when lubricating oil is stored in the oil storage portion 18, a part of the diff ring gear 17 can be immersed in the stored lubricating oil.

  In addition, the case 12 is provided with an oil receiving portion 25 for supplying lubricating oil to an upper portion in the vertical direction. The oil receiving portion 25 is configured by a rib 26 provided above the counter drive gear 13, the counter driven gear 14, and the drive pinion gear 15, and the lubricating oil scraped up by the MG2 reduction gear 16 is disposed above the rib 26. It can be stored. The case 12 is formed with an oil supply hole 27 communicating with the oil receiving portion 25, and the lubricating oil stored in the oil receiving portion 25 is supplied to a lubricating oil supply portion (not shown) of the power transmission device 11 for lubrication. And can be cooled.

  The passage member 19 guides the lubricating oil scraped up and sent by the diff ring gear 17 in the vertical direction, and supplies the lubricating oil to a necessary portion. That is, the passage member 19 guides the lubricating oil scooped up from the oil reservoir 18 by the diff ring gear 17 and supplies it to the counter driven gear 14, the drive pinion gear 15, and the MG 2 reduction gear 16. The lubricating oil pushed out from the meshing portion between the drive pinion gear 15 and the drive pinion gear 15 is guided upward and supplied to the MG2 reduction gear 16.

  Here, the diff ring gear 17 functions as the first lubricating oil supply means (first gear) of the present invention, and the diff ring gear 17 and the drive pinion gear 15 correspond to the second lubricating oil supply means (first and second gears) of the present invention. MG2 reduction gear 16 functions as the third lubricating oil supply means (gear) of the present invention. The lubricating oil supply device according to the first embodiment includes a drive pinion gear 15, an MG2 reduction gear 16, a diff ring gear 17, and a passage member 19.

  The passage member 19 is pushed out and supplied from the first guide passage 31 that guides the lubricating oil that has been scraped up and supplied from the oil reservoir 18 by the diff ring gear 17, and the meshing portion of the diff ring gear 17 and the drive pinion gear 15. The second guide passage 32 guides the lubricating oil, and the second guide passage 32 can guide the lubricating oil having a pressure higher than that of the lubricating oil guided by the first guiding passage 31. In this case, the passage member 19 has a third guide passage 33 that guides the lubricating oil scraped up and supplied from the oil reservoir 18 by the diff ring gear 17 to the meshing portion between the def ring gear 17 and the drive pinion gear 15. Yes. Therefore, the lubricating oil scooped up from the oil reservoir 18 by the diff ring gear 17 is guided upward by the first guide passage 31, and is also brought into engagement with the def ring gear 17 and the drive pinion gear 15 by the third guide passage 33. The lubricating oil guided and pushed out from the meshing portion is guided upward by the second guide passage 32.

  Further, as described above, the passage member 19 forms the first guide passage 31 and the second guide passage 32, and the first and second guide passages 31, 32 have first and second cylindrical shapes. Two cylindrical portions 31a and 32a are provided, and first and second discharge ports 31b and 32b are formed above in the vertical direction. The discharge port 31b of the first guide passage 31 and the discharge port 32b of the second guide passage 32 are arranged so as to be shifted in the direction of the rotational axis of the MG2 reduction gear (gear) 16.

  Specifically, the first guide passage 31 and the second guide passage 32 are arranged so as to overlap in the rotation axis direction of the MG2 reduction gear 16, that is, to intersect (cross), the second guide passage The 32 discharge ports 32 b are arranged on the downstream side in the rotational direction of the MG2 reduction gear 16 from the discharge port 31 b of the first guide passage 31.

  That is, the passage member 19 is provided in the circumferential direction of the diff ring gear 17 so as to face the diff ring gear 17. Forming. The scraping passage 41 includes a pair of side wall portions 41a facing each other with the diffring gear 17 in the axial direction, and a curved surface portion 41b formed to face the outer peripheral surface of the diffring gear 17 in the radial direction. Yes. The curved surface portion 41b is arranged concentrically with the diffring gear 17, and a predetermined gap is secured from the outer peripheral surface of the diffring gear 17, and the size of the gap is substantially uniform in the circumferential direction. . The two side wall portions 41a are connected at the outer ends by curved surface portions 41b. Therefore, the scraping passage 41 is secured in a region where both side surfaces and the outer peripheral surface of the differential ring gear 17 are opposed to the side wall portion 41a and the curved surface portion 41b.

  The scraping passage 41 is provided over almost half the circumference of the diff ring gear 17, and is provided at a position where the front tooth surface in the rotational direction of the diff ring gear 17 faces the upper side in the vertical direction. Is provided at a position immersed in the lubricating oil of the oil reservoir 18. Therefore, the rotation of the diffring gear 17 allows the lubricating oil in the oil reservoir 18 to be raked up into the passage 41 and supplied upward along the outer periphery of the diffring gear 17.

  Further, the passage member 19 forms a first guide passage 31 and a third guide passage 33 branched from the scraping passage 41. The first guide passage 31 branches upward from the scraping passage 41 and extends at a predetermined inclination angle. In the first guide passage 31, the first cylindrical portion 31 a is connected to the scraping passage 41 from the outside. The third guide passage 33 extends in the horizontal direction along the outer peripheral portion of the diff ring gear 17 so as to continue in the same shape from the scraping passage 41. The third guide passage 33 is provided up to the meshing portion between the diff ring gear 17 and the drive pinion gear 15.

  The passage member 19 is provided to face the drive pinion gear 15 along the circumferential direction of the drive pinion gear 15, and the extrusion passage 42 into which the lubricating oil sent by the drive pinion gear 15 flows between the drive pinion gear 15. Is forming. The push-out passage 42 includes a pair of side wall portions 42a facing each other with the drive pinion gear 15 sandwiched in the axial direction, and a curved surface portion 42b formed to face the outer peripheral surface of the drive pinion gear 15 in the radial direction. ing. The curved surface portion 42b is disposed concentrically with the drive pinion gear 15, and a predetermined gap is secured from the outer peripheral surface of the drive pinion gear 15. The size of the gap is substantially uniform in the circumferential direction. ing. The two side walls 42a are connected to each other at the outer end by a curved surface 42b. Therefore, the extrusion passage 42 is secured in a region where both side surfaces and the outer peripheral surface of the drive pinion gear 15 face the side wall portion 42a and the curved surface portion 42b.

  The push-out passage 42 is provided over almost half the circumference of the drive pinion gear 15 and is provided so as to face upward from a position (meshing portion) where the drive pinion gear 15 and the diff ring gear 17 are engaged. Therefore, when the drive pinion gear 15 and the diff ring gear 17 rotate, a part of the lubricating oil flowing through the third guide passage 33 is pushed upward from the meshing portion of the drive pinion gear 15 and the diff ring gear 17, and the drive pinion It can be supplied upward along the outer periphery of the gear 15.

  In addition, the passage member 19 forms a second guide passage 32 branched from the extrusion passage 42. The second guide passage 32 branches upward from the extrusion passage 42 and extends at a predetermined inclination angle. In the second guide passage 32, the second cylindrical portion 32 a is connected to the extrusion passage 42 from the outside.

  The first guide passage 31 is such that the first cylindrical portion 31a is inclined at a predetermined inclination angle with respect to the vertical direction, the lower portion communicates with the scraping passage 41, and the upper portion is the outer peripheral portion of the MG2 reduction gear 16. The first discharge port 31b is formed so as to extend to the vicinity. In the second guide passage 32, the second cylindrical portion 32a is inclined in the direction opposite to the first cylindrical portion 31a at a predetermined inclination angle with respect to the vertical direction, the lower portion communicates with the extrusion passage 42, and the upper portion Is extended to the vicinity of the outer periphery of the MG2 reduction gear 16 to form a second discharge port 32b.

  In this case, in FIG. 1, the first guide passage 31 and the second guide passage 32 are connected to the MG2 reduction gear 16 so that the first guide passage 31 is located on the near side and the second guide passage 32 is located on the other side. Intersect so as to overlap in the direction of the rotation axis. The first guide passage 31 and the second guide passage 32 are arranged such that the first discharge port 31b and the second discharge port 32b are shifted in the direction of the rotational axis of the MG2 reduction gear 16, and the second discharge port 32b is It arrange | positions in the downstream of the rotation direction in the MG2 reduction gear 16 from the 1st discharge port 31b. In addition, the passage member 19 is formed with a guide portion 43 that extends from the second discharge port 32b so as to curve downstream in the rotation direction of the MG2 reduction gear 16.

  Therefore, when the diff ring gear 17 rotates, the lubricating oil in the oil reservoir 18 is sent to the def ring gear 17 and flows into the scraping passage 41 from the inlet 41c. The lubricating oil is continuously fed into the scraping passage 41 by the diff ring gear 17, so that the hydraulic pressure in the scraping passage 41 is increased. When the hydraulic pressure in the scraping passage 41 increases, the lubricating oil in the scraping passage 41 is supplied to the first guide passage 31 and the third guide passage 33. The lubricating oil supplied from the third guide passage 33 to the second guide passage 32 is sent to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, pushed out from this meshing portion, and sent to the extrusion passage 42. , Supplied to the second guide passage 32.

  Thereafter, the lubricating oil sent to the first and second guide passages 31 and 32 is supplied to the MG2 reduction gear 16 from the first and second discharge ports 31 b and 32 b and temporarily stored in the guide portion 43. As the MG2 reduction gear 16 rotates, the lubricating oil is scraped up and supplied to the oil receiving portion 25, and the lubricating oil stored in the oil receiving portion 25 passes through each oil supply hole 27 of the power transmission device 11. Supplied to the lubricating oil supply unit.

  At this time, since the diff ring gear 17 is connected to the drive wheels via the differential mechanism 22, the rotation speed of the diff ring gear 17 and the rotation speed of the drive wheels are substantially the same. Therefore, when the vehicle is traveling from medium speed to high speed, the diff ring gear 17 rotates from medium speed to high speed, and the lubricating oil in the oil reservoir 18 is scraped up by the rotating def ring gear 17. When the lubricating oil is continuously fed to the hydraulic pressure, the hydraulic pressure rises, and the lubricating oil having a high pressure in the scraping passage 41 is supplied to the first guide passage 31 and the third guide passage 33. Then, the high-pressure lubricating oil is sent from the third guide passage 33 to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, pushed out from this meshing portion, and supplied from the push-out passage 42 to the second guide passage 32. .

  High-pressure lubricating oil is supplied to the first guide passage 31 and also to the second guide passage 32. When the pressure of the lubricating oil flowing through the first guide passage 31 is equal to or higher than a predetermined pressure, The second guide passages 31 and 32 can appropriately supply lubricating oil from the first and second discharge ports 31b and 32b toward the MG2 reduction gear 16, and the MG2 reduction gear 16 supplies an appropriate amount of lubricating oil. Supply to oil receiver 25.

  On the other hand, when the vehicle is traveling at a low speed, the diff ring gear 17 rotates at a low speed, and the lubricating oil in the oil reservoir 18 is continuously lubricated into the scraping passage 41 by the rotating def ring gear 17. Is supplied to the first guide passage 31 and the third guide passage 33. Then, the lubricating oil is sent from the third guide passage 33 to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, pushed out from the meshing portion, and supplied from the push-out passage 42 to the second guide passage 32.

  At this time, since the vehicle is at a low speed, the diff ring gear 17 also rotates at a low speed, and the lubricating oil in the oil reservoir 18 is supplied to the first guide passage 31 and the third guide passage 33 in a low pressure state. Then, since the first guide passage 31 extends upward in the vertical direction, the low-pressure lubricating oil cannot be sent out from the discharge port 31 b, and the oil level of the lubricating oil enters the first guide passage 31. Will be located. On the other hand, since the third guide passage 33 extends in the horizontal direction, low-pressure lubricating oil can be sent to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, and the drive pinion gear 15 and the def ring gear The lubricating oil pushed out at the meshing portion with the gear 17 is sent out to the second guide passage 32, and the second guide passage 32 can send out the lubricating oil from the discharge port 32b.

  When the high-pressure lubricating oil is supplied only to the second guide passage 32 and the pressure of the lubricating oil flowing through the first guide passage 31 is less than a predetermined pressure, the second guide passage 32 is opened from the second discharge port 32b. Lubricating oil can be appropriately supplied toward the MG2 reduction gear 16, and the MG2 reduction gear 16 supplies an appropriate amount of lubricating oil to the oil receiver 25.

  In this case, the second guide passage 32 can supply lubricating oil from the second discharge port 32b to the MG2 reduction gear 16, but the first guide passage 31 faces the MG2 reduction gear 16 from the first discharge port 31b. The lubricant cannot be supplied. However, the first discharge port 31b and the second discharge port 32b are displaced in the axial direction of the MG2 reduction gear 16, and the second discharge port 32b is downstream of the first discharge port 31b in the rotation direction of the MG2 reduction gear 16. Therefore, the lubricating oil does not flow from the second discharge port 32b into the first discharge port 31b.

  As described above, in the lubricating oil supply apparatus according to the first embodiment, the counter drive gear 13, the counter driven gear 14, the drive pinion gear 15, the MG2 reduction gear 16, and the diff ring gear 17 are sequentially meshed and accommodated in the case 12. At the same time, the oil reservoir 18 and the passage member 19 are accommodated, and the passage member 19 guides the first guide passage 31 that guides the lubricating oil scraped up by the diff ring gear 17, and the meshing portion of the drive pinion gear 15 and the diff ring gear 17. The second guide passage 32 that guides the extruded lubricating oil is provided, and the oil receiving portion 25 is scraped up by the rotation of the MG2 reduction gear 16 by the MG2 reduction gear 16 rotating from the first guide passage 31 and the second guide passage 32. The first discharge port 31b of the first guide passage 31 and the second discharge port 32 of the second guide passage 32. The are arranged offset in the rotation axis direction of the MG2 reduction gear 16.

  Therefore, when the diff ring gear 17 rotates at a low speed, the lubricating oil does not become high pressure, and the first guide passage 31 cannot send the lubricating oil to the MG2 reduction gear 16 from the first discharge port 31b. On the other hand, the second guide passage 32 can send the lubricating oil pushed out from the meshing portion of the drive pinion gear 15 and the diff ring gear 17 to the MG2 reduction gear 16 from the second discharge port 32b. As a result, even when the pressure of the lubricating oil in the first guide passage 31 decreases, the lubricating oil can be supplied from the second guide passage 32 to the MG2 reduction gear 16, and the first discharge port 31b and the second discharge port Since 32b is displaced in the direction of the rotational axis of the MG2 reduction gear 16, it is possible to prevent the lubricating oil from flowing from the second guide passage 32 into the first guide passage 31, and to suppress the shortage of supply of the lubricating oil. Lubrication performance can be improved.

  In the lubricating oil supply device of the first embodiment, the second guide passage 32 can guide the lubricating oil having a pressure higher than the pressure of the lubricating oil guided by the first guide passage 31 to the MG2 reduction gear 16. The second discharge port 32 b of the second guide passage 32 is disposed downstream of the first discharge port 31 b of the first guide passage 31 in the rotational direction of the MG2 reduction gear 16. Accordingly, even if the pressure of the lubricating oil in the first guide passage 31 decreases, the lubricating oil from the second discharge port 32b of the second guide passage 32 is MG2 reduction gear from the first discharge port 31b of the first guide passage 31. 16 is supplied to the downstream side in the rotational direction of the lubricant 16, and the lubricating oil can be prevented from flowing from the second guide passage 32 to the first guide passage 31.

  In the lubricating oil supply device of the first embodiment, the first guide passage 31 and the second guide passage 32 are arranged so as to overlap in the direction of the rotational axis of the MG2 reduction gear 16. Therefore, by efficiently arranging the first guide passage 31 and the second guide passage 32, the lubricating oil can be prevented from flowing from the second guide passage 32 into the first guide passage 31, and the structure can be simplified. Can be made possible.

  In the lubricating oil supply device of the first embodiment, a third guide passage 33 is provided for guiding a part of the lubricating oil scraped up by the diff ring gear 17 to the meshing portion of the drive pinion gear 15 and the diff ring gear 17. The scraped lubricating oil is guided from the first guide passage 31 to the MG2 reduction gear 16, and from the third guide passage 33 to the meshing portion of the drive pinion gear 15 and the diffring gear 17, and the MG2 reduction above the second guide passage 32. The gear 16 is led. Accordingly, it is possible to share the lubricating oil scraping and supplying method using the centrifugal force of the diff ring gear 17 and the lubricating oil pushing and supplying method using the meshing portion of the drive pinion gear 15 and the diff ring gear 17, and lubrication performance. Can be improved.

[Embodiment 2]
FIG. 3 is a schematic diagram illustrating a lubricating oil supply device according to a second embodiment of the present invention, and FIG. 4 is a schematic diagram illustrating an operation of the lubricating oil supply device according to the second embodiment. In addition, the same code | symbol is attached | subjected to the member which has the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  As shown in FIG. 3, the lubricating oil supply device according to the second embodiment is applied to, for example, a power transmission device 11 of a hybrid vehicle. The power transmission device 11 is provided in a case 12 with a counter drive gear 13. The counter driven gear 14, the drive pinion gear 15, the MG2 reduction gear 16, the diff ring gear 17, the oil reservoir 18, and the passage member 50 are accommodated.

  The passage member 50 includes a first guide passage 51 that guides the lubricating oil scooped up from the oil reservoir 18 by the diff ring gear 17 to the MG2 reduction gear 16 and a lubricating oil scooped up from the oil reservoir 18 by the diff ring gear 17. Is guided to the meshing part of the drive pinion gear 15 and the diff ring gear 17, and the second guide path 52 is guided to the MG2 reduction gear 16 by the lubricating oil pushed out from the mesh part of the drive pinion gear 15 and the diff ring gear 17. And form. The passage member 50 forms a joining portion 54 that guides the lubricating oil upward in the vertical direction while the downstream portion of the first guide passage 51 and the downstream portion of the second guide passage 52 join together.

  The first guide passage 51 is inclined at a predetermined inclination angle with respect to the vertical direction, the lower portion communicates with the scraping passage 41, and the upper portion communicates with the merging portion 54. The second guide passage 52 is inclined in a direction opposite to the first guide passage 51 at a predetermined inclination angle with respect to the vertical direction, the lower portion communicates with the extrusion passage 42, and the upper portion communicates with the junction 54. Yes. The merging portion 54 extends to the vicinity of the outer peripheral portion of the MG2 reduction gear 16 to form a discharge port 54a and a guide portion 55. In this case, the connection portion between each guide passage 51, 52 and the merging portion 54 is half of the height in the vertical direction where the respective guide passages 51, 52 and the merging portion 54 are combined. It is arranged at the following height position.

  Therefore, when the diff ring gear 17 rotates, the lubricating oil in the oil reservoir 18 is sent to the def ring gear 17 and flows into the scraping passage 41 from the inlet 41c. The lubricating oil is continuously fed into the scraping passage 41 by the diff ring gear 17, so that the hydraulic pressure in the scraping passage 41 is increased. When the hydraulic pressure of the scraping passage 41 is increased, the lubricating oil in the scraping passage 41 is supplied to the first guide passage 51 and the third guide passage 53. Then, the lubricating oil supplied to the first guide passage 51 is sent to the merge portion 54. On the other hand, the lubricating oil supplied to the third guide passage 53 is sent to the meshing portion between the drive pinion gear 15 and the diffring gear 17, pushed out from this meshing portion, sent to the extrusion passage 42, and the second guide passage 52. Supplied to. Then, the lubricating oil supplied to the second guide passage 52 is sent to the merge portion 54. Lubricating oil sent from the first and second guide passages 51 and 52 to the junction 54 is supplied to the MG2 reduction gear 16 from the discharge port 54a.

  Thereafter, the lubricating oil sent from the first and second guide passages 51, 52 to the merging portion 54 is supplied to the MG2 reduction gear 16 from the discharge port 54 a and temporarily stored in the guide portion 55. As the MG2 reduction gear 16 rotates, the lubricating oil is scraped up and supplied to the oil receiving portion 25, and the lubricating oil stored in the oil receiving portion 25 passes through each oil supply hole 27 of the power transmission device 11. Supplied to the lubricating oil supply unit.

  By the way, when the vehicle is traveling at a low speed, the diff ring gear 17 rotates at a low speed, and the lubricating oil in the oil reservoir 18 is continuously lubricated to the scraping passage 41 by the rotating def ring gear 17. Is sent to the first guide passage 51 and the third guide passage 53. Then, the lubricating oil is sent from the third guide passage 53 to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, pushed out from the meshing portion, and supplied from the push-out passage 42 to the second guide passage 52.

  At this time, since the vehicle is at a low speed, the diff ring gear 17 also rotates at a low speed, and the lubricating oil in the oil reservoir 18 is supplied to the first guide passage 51 and the third guide passage 53 in a low pressure state. Then, since the first guide passage 51 extends upward in the vertical direction, the low-pressure lubricating oil cannot be sent to the merging portion 54, and the oil level of the lubricating oil flows into the first guide passage 51. Will be located. On the other hand, since the third guide passage 53 extends in the horizontal direction, low-pressure lubricating oil can be sent to the meshing portion between the drive pinion gear 15 and the diff ring gear 17, and the drive pinion gear 15 and the def ring gear The lubricating oil pushed out at the meshing part with the gear 17 is sent out to the second guide passage 52, and the second guide passage 52 can send out the lubricating oil to the junction 54.

  That is, the connection part of each guide passage 51,52 and the confluence | merging part 54 is arrange | positioned at each guide passage 51,52 side. Therefore, the lubricating oil in the second guide passage 52 is supplied to the MG2 reduction gear 16 from the discharge port 54a through the junction 54. Further, since the oil level of the lubricating oil in the first guide passage 51 is at a low position, the lubricating oil sent from the second guide passage 52 to the merging portion 54 does not flow into the first guide passage 51.

  As described above, in the lubricating oil supply apparatus according to the second embodiment, the counter drive gear 13, the counter driven gear 14, the drive pinion gear 15, the MG2 reduction gear 16, and the diff ring gear 17 are sequentially meshed and accommodated in the case 12. At the same time, the oil reservoir 18 and the passage member 50 are accommodated, and the passage member 50 guides the first guide passage 51 that guides the lubricating oil scraped up by the diff ring gear 17, and the meshing portion of the drive pinion gear 15 and the diff ring gear 17. A first guide passage 52 and a second guide passage 52 for guiding the extruded lubricating oil, and a joining portion 54 for guiding the lubricating oil upward in the vertical direction are provided together with the downstream portions of the guide passages 51 and 52. The connection part of 51,52 and the confluence | merging part 54 is arrange | positioned at each guide passage 51,52 side.

  Accordingly, when the diff ring gear 17 rotates at a low speed, the lubricating oil does not become high pressure, and the first guide passage 51 cannot send the lubricating oil to the upper junction 54. On the other hand, the second guide passage 52 can send the lubricating oil pushed out from the meshing portion of the drive pinion gear 15 and the diff ring gear 17 to the merging portion 54, and the lubricating oil in the merging portion 54 is supplied to the MG2 reduction gear 16. The As a result, even if the pressure of the lubricating oil in the first guide passage 51 decreases, the lubricating oil can be supplied from the second guide passage 52 to the MG2 reduction gear 16 through the junction 54 and from the second guide passage 52. Lubrication oil can be prevented from flowing into the first guide passage 51, and insufficient lubrication oil supply can be suppressed to improve lubrication performance.

  In each of the above-described embodiments, the first lubricating oil supply means of the present invention is a lubricating oil scraping supply system that uses the centrifugal force of the diffring gear 17, and the second lubricating oil supply means of the present invention is a drive. Although the lubricating oil extrusion supply system using the meshing portion of the pinion gear 15 and the diffring gear 17 is used, the present invention is not limited to this system. For example, the first lubricating oil supply means of the present invention may be an extrusion supply system, and the second lubricating oil supply means of the present invention may be a scraping supply system, or both may be a scraping supply system or an extrusion supply system. Also good.

  Moreover, although each embodiment mentioned above demonstrated the lubricating oil supply apparatus of this invention applied to the power transmission device of a hybrid vehicle, it is not limited to this. The lubricating oil supply device of the present invention may be applied to a power transmission device such as an automatic transmission or a manual transmission.

DESCRIPTION OF SYMBOLS 11 Power transmission device 12 Case 13 Counter drive gear 14 Counter driven gear 15 Drive pinion gear (2nd gear, 2nd lubricating oil supply means)
16 MG2 reduction gear (gear, third lubricating oil supply means)
17 Defring gear (first gear, first lubricating oil supply means, second lubricating oil supply means)
18 Oil storage portion 19, 50 passage member 25 Oil receiving portion 31, 51 first guide passage 31b first discharge port 32, 52 second guide passage 32b second discharge port 33, 53 third guide passage 41 scraping passage 42 extrusion Passage 54 Junction 54a Discharge port

Claims (3)

First lubricating oil supply means for supplying lubricating oil;
A first guide passage having a cylindrical shape for guiding the lubricant supplied by the first lubricant supply means;
Second lubricating oil supply means for supplying lubricating oil;
A second guide passage having a cylindrical shape for guiding the lubricant supplied by the second lubricant supply means;
A third lubricating oil supply means that scrapes and supplies the lubricating oil guided from the first guiding path and the second guiding path by rotating a gear;
With
The discharge port of the first guide passage and the discharge port of the second guide passage are arranged shifted in the direction of the rotation axis of the gear ,
The second guide passage can guide lubricating oil having a pressure higher than that of the lubricating oil guided by the first guide passage, and a discharge port of the second guide passage can discharge the first guide passage. A lubricating oil supply device, wherein the lubricating oil supply device is disposed downstream of the outlet in the rotational direction of the gear . 2. The lubricating oil supply device according to claim 1, wherein the first guide passage and the second guide passage are disposed so as to overlap each other in a rotation axis direction of the gear. A third guide passage is provided for guiding the lubricating oil supplied by the first lubricating oil supply means to the second lubricating oil supply means, and the first lubricating oil supply means supplies the lubricating oil stored in the storage portion to the first The first guide passage is guided to the upper third lubricating oil supply means by the rotation of one gear, and the third guide passage is guided to the second lubricating oil supply means, and the second lubricating oil supply means 2. The lubricating oil supplied from the third guide passage is pushed out by meshing the first and second gears, and the second guide passage leads to the third lubricating oil supply means located above. Or the lubricating oil supply apparatus of 2.

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