JP5601238B2 - Lubricating oil supply device for power transmission device - Google Patents

Description

  The present invention relates to a lubricating oil supply device for a power transmission device.

  Conventionally, a technique has been proposed in which lubricating oil is sent upward in the vertical direction by a rotating member. For example, in Patent Document 1, when the rotation speed of the rotation member is equal to or lower than a predetermined value, the first oil supply path that guides the oil scooped up by the rotation member to the oil receiving portion and the rotation speed of the rotation member are predetermined. When the value is exceeded, the second oil supply path that guides the oil that has been blown off by the rotation of the rotating member to the oil receiving portion and the second oil supply path, and the oil that has been blown off is the second oil. A technique of an oil supply device that includes a guide mechanism that suppresses contact with a wall surface that forms a supply path is disclosed.

JP 2003-336729 A

  There is still room for improvement in improving the supply capacity when lubricating oil is supplied upward in the vertical direction by rotation of the rotating member.

  An object of the present invention is to provide a lubricating oil supply device for a power transmission device that can improve the supply capability of supplying lubricating oil vertically upward by rotation of a rotating member.

The lubricating oil supply device for a power transmission device according to the present invention is connected to a storage portion for storing lubricating oil and a drive wheel of a vehicle, and rotates in conjunction with the rotation of the driving wheel to send the lubricating oil in the storage portion. A rotating member and a passage member that guides the lubricating oil sent by the rotating member upward in the vertical direction, the passage member extending along an outer periphery of the rotating member, and the lubricating oil sent by the rotating member A first component that forms a first passage into which the gas flows, a second component that forms a second passage that branches from the first passage and extends vertically upward, the first passage, and the A guide that is provided at a branch portion with the second passage and projects toward the upstream side in the flow direction of the lubricating oil along the rotation direction of the rotating member, and guides the lubricating oil flowing through the first passage to the second passage and members, was closed, the flow direction in said guide member The flow side is plate-shaped and faces the outer peripheral surface of the rotating member in the radial direction of the rotating member, and is directed to the upstream end of the flow direction of the guide member toward the downstream side of the flowing direction. A concave portion that is recessed is formed .

  In the lubricating oil supply device of the power transmission device, it is preferable that the axial width of the rotating member in the recessed portion decreases as it goes from the upstream side to the downstream side in the flow direction.

In the lubricating oil supply device of the power transmission device, the rotating member is a helical gear,
It is preferable that the said recessed part is arrange | positioned at the predetermined side of the axial direction in the said guide member, and the said predetermined side is a side to which the tooth surface ahead of the rotation direction of the said rotation member at the time of advance of the said vehicle faces.

  In the lubricating oil supply device of the power transmission device, it is preferable that the lubricating oil supply device further includes a suppression structure that suppresses the lubricating oil from flowing downstream of the branch portion in the first passage in the flow direction.

A lubricating oil supply device for a power transmission device according to the present invention includes a passage member that guides lubricating oil sent by a rotating member upward in the vertical direction. The passage member extends along the outer periphery of the rotating member, and forms a first passage through which the lubricating oil sent by the rotating member flows, and a branch from the first passage and extends upward in the vertical direction. A second component that forms a second extending passage, and a branch portion between the first passage and the second passage, and toward the upstream side in the flow direction of the lubricating oil along the rotation direction of the rotating member protrudes, the outer peripheral surface of the rotating member lubricating oil flowing through the first passage possess a guide member for guiding the second passage, and the upstream side of the flow direction in the guide member, a plate-like, and in the radial direction of the rotary member A recess portion that is recessed toward the downstream side in the flow direction is formed at the upstream end in the flow direction of the guide member . According to the lubricating oil supply device for a power transmission device according to the present invention, the lubricating oil is guided from the first passage to the second passage by the guide member, so that the lubricating oil is supplied vertically upward by the rotation of the rotating member. The effect that can be improved.

Drawing 1 is a front view showing the power transmission device concerning an embodiment. FIG. 2 is a cross-sectional view of the power transmission device according to the embodiment. FIG. 3 is a perspective view showing a passage member according to the embodiment. FIG. 4 is an enlarged view of the guide member according to the embodiment. FIG. 5 is a perspective view of the guide member according to the embodiment. FIG. 6 is another view showing the guide member according to the embodiment.

  Hereinafter, a lubricating oil supply device for a power transmission device according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[Embodiment]
The embodiment will be described with reference to FIGS. 1 to 6. The present embodiment relates to a lubricating oil supply device for a power transmission device. 1 is a front view showing a power transmission device according to the embodiment, FIG. 2 is a cross-sectional view of the power transmission device according to the embodiment, FIG. 3 is a perspective view showing a passage member according to the embodiment, and FIG. FIG. 5 is an enlarged view of the guide member according to the embodiment, FIG. 5 is a perspective view of the guide member according to the embodiment, and FIG. 6 is another view showing the guide member according to the embodiment.

  The lubricating oil supply device 1-1 of the power transmission device according to the present embodiment includes a storage portion (see reference numeral 9 in FIG. 1), a diff ring gear (see reference numeral 7 in FIG. 1), and an oil receiving portion (reference numeral 8 in FIG. 1). And a passage member (see reference numeral 10 in FIG. 1). Lubricating oil sent from the reservoir 9 by the rotation of the diff ring gear 7 is guided to the oil receiver 8 by the passage member 10. The passage member 10 branches from the first passage 13 (see reference numeral 11 in FIG. 1) and forms a first passage (see reference numeral 13 in FIG. 1) along the outer periphery of the diff ring gear 7, and receives oil. It has the 2nd structure part (refer the code | symbol 12 of FIG. 1) which forms the 2nd channel | path (refer the code | symbol 14 of FIG. 1) extended toward the part 8, and a guide member (refer the code | symbol 18 of FIG. 1). The guide member 18 is provided at a branch portion between the first passage 13 and the second passage 14.

  The lubricating oil supply device 1-1 of the power transmission device according to the present embodiment includes the guide member 18, so that the lubricating oil in the first passage 13 can be smoothly guided to the second passage 14. Therefore, the lubricating oil supply capability in the vertical direction by the rotation of the diffring gear 7, for example, the lubricating oil supply capability to the oil receiving portion 8 can be improved.

  Further, as shown in FIG. 5, the guide member 18 has a recess 19a. The recessed portion 19a has a shape that becomes narrower toward the downstream side in the flow direction of the lubricating oil, and concentrates the flow of the lubricating oil guided from the first passage 13 to the second passage 14 to concentrate the lubricating oil on the oil receiving portion 8. Supply capacity can be improved. Further, the recessed portion 19 a is disposed at a position that takes into account the flow of the lubricating oil depending on the direction of the tooth stripe of the diff ring gear 7. The recess 19a is arranged on one side in the width direction of the first passage 13, specifically, on the side where the lubricating oil sent by the diff ring gear 7 is concentrated and the flow rate and flow velocity of the lubricating oil are increased. Therefore, the guide member 18 of the present embodiment can efficiently supply the lubricating oil to the oil receiving portion 8 at the upper part in the vertical direction via the second passage 14.

  In FIG. 1, the code | symbol 1 shows the power transmission device of a hybrid vehicle (not shown). Reference numeral 1-1 denotes a lubricating oil supply device (hereinafter also simply referred to as “lubricating oil supply device”) of the power transmission device of the present embodiment. The power transmission device 1 has a case 2. In the case 2, a counter drive gear 3, a counter driven gear 4, a drive pinion gear 5, an MG2 reduction gear 6, a diff ring gear (rotating member) 7, an oil receiving portion 8, a storage portion 9, and a passage member 10 are provided. Yes. The counter drive gear 3 is disposed on the front side in the vehicle front-rear direction with respect to the counter driven gear 4, and the MG2 reduction gear 6 and the diff ring gear 7 are disposed on the rear side in the vehicle front-rear direction with respect to the counter driven gear 4.

  The counter drive gear 3 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 3 and the MG1. Is input. The counter driven gear 4 and the drive pinion gear 5 are arranged on the same axis and rotate integrally. The counter driven gear 4 meshes with the counter drive gear 3. The MG2 reduction gear 6 is connected to the rotation shaft 22 of the rotor 21 of the second motor generator (MG2) 20 and rotates integrally with the rotor 21. The MG2 reduction gear 6 meshes with the counter driven gear 4. The MG2 reduction gear 6 has a smaller diameter than the counter driven gear 4, and the output of the MG2 (20) is amplified and transmitted from the MG2 reduction gear 6 to the counter driven gear 4.

  The drive pinion gear 5 meshes with the diff ring gear 7, and the engine output torque and the output torque of the MG 2 (20) input to the counter driven gear 4 are transmitted to the def ring gear 7 via the drive pinion gear 5. The The diff ring gear 7 is connected to a drive wheel (not shown) via a differential mechanism 23, and rotates in conjunction with the rotation of the drive wheel. An arrow Y1 indicates the direction of rotation of the diff ring gear 7 when the vehicle moves forward. The MG2 reduction gear 6 is disposed above the diff ring gear 7 in the vertical direction.

  A storage portion 9 for storing lubricating oil (for example, ATF) is formed in the lower portion of the case 2 in the vertical direction. The diff ring gear 7 is disposed in the lower part of the case 2, and when the lubricating oil is stored in the storage portion 9, a part of the def ring gear 7 is immersed in the stored lubricating oil. An oil receiving portion 8 is provided in the case 2 above the diff ring gear 7 in the vertical direction. The oil receiving portion 8 is configured to be able to store lubricating oil, and the lubricating oil that has flowed into the oil receiving portion 8 is supplied to the lubricated portion of the power transmission device 1. The oil receiving portion 8 is partitioned from the lower space in the case 2 by ribs 8 a protruding from the inner wall surface of the case 2. The lubricating oil in the oil receiving portion 8 is supplied to the MG2 (20) via the supply hole 8b and to the MG1 via the supply hole 8c, and lubricates and cools MG1 and MG2 (20). The lubricating oil in the oil receiving portion 8 may be supplied to other lubricated portions of the power transmission device 1.

The diff ring gear 7 rotates in conjunction with the rotation of the drive wheel to feed the lubricating oil in the reservoir 9. Conventionally, a technique is known in which a rotating member such as a diff ring gear 7 is used to lift up the lubricating oil in a reservoir to a supply destination such as an oil receiving portion in the upper part of the vertical direction. In such a situation, there is a problem that the lubricant does not reach the supplier or a sufficient amount is not supplied.
(A) At low vehicle speed (because the rotation speed of the diff ring gear is small).
(B) The supply destination is high as viewed from the differential shaft (because the momentum of the lubricating oil is insufficient with respect to the height).
(C) The supply destination is behind the vehicle relative to the diff ring gear (because it is difficult to direct the direction of the lubricant to protrude).
(D) When the vehicle is going up a hill (because the lubricating oil around the diff ring gear is increased and the momentum of the lubricating oil popping out is lost).

  The lubricating oil supply device 1-1 according to the present embodiment includes a passage member 10 that guides the lubricating oil sent by the diff ring gear 7 upward in the vertical direction. More specifically, the passage member 10 guides the lubricating oil to the oil receiving portion 8. Thus, even when the vehicle speed is low or when the oil receiving portion 8 is at a high position when viewed from the rotation shaft of the diffring gear 7, the lubricating oil is guided upward in the vertical direction, and the lubricating oil is supplied to the oil receiving portion 8. Can be supplied.

  The passage member 10 has a first component 11 and a second component 12. The first component 11 is provided to face the diffring gear 7 along the circumferential direction of the diffring gear 7, and is a first passage that is a passage through which lubricating oil sent by the defling gear 7 flows between the first component 11. 13 is formed. The first component portion 11 is formed in a shape corresponding to the outer peripheral surface 7a and a pair of side wall portions 11a facing each other with the diffring gear 7 interposed therebetween in the axial direction and the outer peripheral surface 7a of the diffring gear 7 in the radial direction. And a curved surface portion 11b. The curved surface portion 11b is disposed concentrically with the diff ring gear 7, and the size of the gap between the curved surface portion 11b and the outer peripheral surface 7a is substantially uniform in the circumferential direction. The radially outer ends of the side wall portions 11a and 11a are connected to each other by a curved surface portion 11b. That is, the first component portion 11 faces the both side surfaces and the outer peripheral surface 7a of the diffring gear 7, and a first passage as a lubricant passage is provided between the first component portion 11 and the diffring gear 7. 13 is formed. The first passage 13 is an oil passage that extends along the outer periphery of the diff ring gear 7 and into which lubricating oil sent by the def ring gear 7 flows.

  The installation area of the first component 11 in the circumferential direction of the diff ring gear 7 is an area slightly less than the half circumference of the diff ring gear 7, and the tooth surface in the rotational direction of the diff ring gear 7 faces upward in the vertical direction. It is an area. In other words, the circumferential range in which the first passage 13 is formed with respect to the diff ring gear 7 corresponds to the range in which the lubricating oil is sent upward in the vertical direction by the rotation of the diff ring gear 7. As a result, the lubricant inlet 13 a in the first passage 13 is located at the lower end in the vertical direction of the first passage 13, and is formed on the downstream side in the lubricant flow direction along the rotational direction of the diffring gear 7. The outlet 13b is located at the upper end of the first passage 13 in the vertical direction. In the inflow port 13a, the outer peripheral surface of the curved surface portion 11b is in contact with the bottom surface of the case 2, and the lubricating oil sent by the rotation of the diff ring gear 7 flows into the first passage 13 from the inflow port 13a.

  The second component 12 is connected to the first passage 13 to form a second passage 14 that guides the lubricating oil in the first passage 13 to the oil receiving portion 8. The second passage 14 is an oil passage that branches from the first passage 13 and extends toward the inflow port 81 of the oil receiving portion 8, and extends from the first passage 13 upward in the vertical direction. The second passage 14 is connected to the first passage 13 on the upstream side of the outlet 13 b in the flow direction of the lubricating oil along the rotation direction of the diff ring gear 7 in the first passage 13. In this specification, the flow direction of the lubricating oil along the rotation direction (Y1) of the diff ring gear 7 in the first passage 13 is simply referred to as “flow direction of the first passage 13”. Further, the upstream side and the downstream side in the flow direction of the first passage 13 are simply referred to as “upstream side of the first passage 13” and “downstream side of the first passage 13”. Unless otherwise specified, the “axial direction” indicates the axial direction of the diffring gear 7, and the “radial direction” indicates the radial direction of the diffring gear 7.

  The second passage 14 is connected to the first passage 13 from the outside in the radial direction. An opening is formed in the curved surface portion 11 b of the first component portion 11, and this opening is a connection portion 13 c between the first passage 13 and the second passage 14, and the inlet of the second passage 14. It has become. That is, the connection portion 13 c that is the inlet of the second passage 14 is opposed to the outer peripheral surface 7 a of the diff ring gear 7 in the radial direction.

  Further, the second passage 14 is opened toward the upstream side of the first passage 13. The second component part 12 is formed in a chimney shape (cylindrical shape) having a rectangular cross section in which the second passage 14 is formed, and extends in the vertical direction from the connection part 13 c toward the oil receiving part 8. Yes. The second component 12 is formed in a duct shape (cylindrical shape), and other than both ends of the second passage 14 are closed, so that the moving direction of the lubricating oil in the second passage 14 is only in the axial direction of the second component 12. By restricting and suppressing the oil pressure from dropping, the force for guiding the lubricating oil upward in the vertical direction increases. The channel cross-sectional area of the second passage 14 is larger than the channel cross-sectional area of the first passage 13. The lower end of the second passage 14 is connected to the first passage 13 at the connection portion 13 c, and the upper end opens toward the inlet 81 of the oil receiving portion 8.

  When the diff ring gear 7 rotates, the lubricating oil in the reservoir 9 is sent to the def ring gear 7 and flows into the first passage 13 from the inflow port 13a. The oil pressure in the first passage 13 is increased by continuously feeding the lubricating oil into the first passage 13 by the diff ring gear 7. That is, the first passage 13 functions as an oil concentration portion that collects the lubricating oil around the differential ring gear 7 and increases the pressure of the lubricating oil. As the hydraulic pressure in the first passage 13 increases, the lubricating oil in the first passage 13 rises toward the oil receiving portion 8 through the second passage 14. That is, the diff ring gear 7 and the passage member 10 function as a pump that increases the hydraulic pressure of the lubricating oil and sends the lubricating oil upward. Further, the second passage 14 functions as a guide portion that guides the traveling direction of the concentrated lubricating oil from the rotation direction of the diff ring gear 7 upward in the vertical direction. The lubricating oil flowing out from the upper end of the second passage 14 flows into the oil receiving portion 8 through the inflow port 81.

  The lubricating oil flowing in the first passage 13 along the rotational direction of the diffring gear 7 due to the hydraulic pressure and the rotation of the diffring gear 7 flows from the connecting portion 13c to the second passage 14 toward the outlet 13b and the second passage 14, respectively. Although it is going to flow, the lubricating oil supply apparatus 1-1 of this embodiment is provided with the suppression structure which suppresses that a lubricating oil flows in the 1st channel | path 13 toward the outflow port 13b from the connection part 13c. The suppression structure suppresses the lubricating oil from flowing to the downstream side of the first passage 13 from the branch portion of the first passage 13 with the second passage 14.

  This suppression structure means that the second passage 14 extends radially outward from the connecting portion 13c, and lubricating oil that receives centrifugal force easily flows toward the second passage 14, the second passage 14, the oil receiving portion 8 side is located on the downstream side of the first passage 13 relative to the connection portion 13 c side, and the lubricating oil easily flows from the first passage 13 to the second passage 14 along the tangential direction. That is, the flow passage cross-sectional area of the two passages 14 is larger than the flow passage cross-sectional area of the first passage 13, and the outflow port 13b is positioned above the connecting portion 13c in the vertical direction.

  The restraining structure of the present embodiment includes the passage member 10 and the diff ring gear 7. The connecting portion 13c is formed at a position facing the outer peripheral surface 7a of the diff ring gear 7, and the second passage 14 extends outward in the radial direction from the connecting portion 13c. The lubricating oil fed into the second passage 14 by the momentum can move upward in the second passage 14 by the momentum.

  As described above, in the lubricating oil supply device 1-1 of the present embodiment, the lubricating oil is not only utilized by the energy (momentum) due to the rotational force of the diffring gear 7, but also by the pumping effect of the defring gear 7 and the passage member 10. It is sent upward in the case 2. Further, the lubricating oil is restrained from flowing from the connecting portion 13c toward the outlet 13b, and the flow of the lubricating oil toward the second passage 14 is promoted, so that the inside of the case 2 is passed through the second passage 14. Lubricant is sent to the top of Therefore, the lubricating oil can be supplied to the oil receiving portion 8 even at a low vehicle speed or when the oil receiving portion 8 is at a high position when viewed from the rotation shaft of the diffring gear 7. That is, the ability to send lubricating oil upward in the vertical direction is improved by the lubricating oil supply device 1-1. Without being scattered, the lubricant is concentrated in the first passage 13 and then guided upward toward the oil receiver 8 so that the lubricant is efficiently sent to the oil receiver 8 in the vertical direction. be able to.

  Further, the lubricating oil supply device 1-1 of the present embodiment includes a guide member 18 that guides the lubricating oil flowing through the first passage 13 to the second passage 14. FIG. 5 is a perspective view of the guiding member 18 according to the present embodiment, and FIG. 6 is another view showing the guiding member 18 according to the present embodiment, and is a view as viewed from B in FIG. The lubricating oil supply device 1-1 of the present embodiment smoothes the flow of lubricating oil from the first passage 13 to the second passage 14 by the guide member 18, and lubricates vertically upward by the rotation of the diffring gear 7. Oil supply capacity can be improved.

  As shown in FIG. 4, the guide member 18 is provided at a connecting portion 13 c, in other words, at a branch portion between the first passage 13 and the second passage 14. The width of the guide member 18 in the axial direction is the same as the width of the first passage 13 and the second passage 14. That is, the guide member 18 is provided from one end to the other end in the width direction of the first passage 13 and the second passage 14. The guide member 18 is provided on the inner wall surface 12 a on the downstream side of the first passage 13 in the second component 12. In other words, the guide member 18 is disposed on the downstream side of the first passage 13 at the branch portion between the first passage 13 and the second passage 14. The guide member 18 protrudes from the inner wall surface 12a toward the upstream side of the flow direction of the lubricating oil in the first passage 13.

  The guide member 18 has a substantially triangular cross-sectional shape when viewed in the axial direction, and the thickness of the first passage 13 in the lubricating oil flow direction increases toward the lower side in the vertical direction. That is, the guide member 18 protrudes toward the upstream side of the first passage 13 with respect to the inner wall surface 12a as it approaches the first passage 13 in the flow direction of the lubricating oil in the second passage 14. Thus, since the guide surface 18a of the guide member 18 has a smaller angle with the flow direction of the lubricating oil flowing through the first passage 13 than the inner wall surface 12a, the guide surface 18a is smoother than when the guide member 18 is not provided. The lubricating oil can be guided from the first passage 13 to the second passage 14.

  As shown in FIG. 5, in the guide member 18, the guide surface 18 a that guides the lubricating oil is a curved surface that is recessed toward the downstream side of the first passage 13. The guide surface 18 is curved so as to gradually change the flow of the lubricating oil toward the flow direction of the first passage 13 in the axial direction of the second passage 14. That is, the guide member 18 has a function as a jump base that causes the lubricating oil flowing in the circumferential direction of the diff ring gear 7 to jump upward in the vertical direction. Thereby, the guide member 18 can smoothly change the flow direction of the lubricating oil and send the lubricating oil toward the oil receiving portion 8.

  In addition, the guide member 18 has a plate-like portion 19. The plate-like portion 19 is provided at the lower end of the guide member 18 in the vertical direction. The plate-like portion 19 protrudes to the upstream side in the flow direction of the lubricating oil in the first passage 13 with respect to other portions of the guide member 18. The plate-like portion 19 is a plate-like component that faces the outer peripheral surface 7 a of the diff ring gear 7 in the radial direction of the diff ring gear 7. For example, the thickness of the plate-like portion 19 may be constant along the flow direction of the first passage 13, and the thickness may be reduced toward the upstream side of the first passage 13. The guide member 18 is configured so that the upstream portion of the first passage 13 is a plate-like portion 19 parallel to the flow direction, so that the flow of the lubricating oil in the first passage 13 is prevented from being disturbed. The lubricating oil can be guided to 14.

  As shown in FIGS. 5 and 6, the plate-like portion 19 has a recessed portion 19 a that is recessed in a direction to receive the flow of lubricating oil. The recess 19 a is formed at the upstream end of the plate-like portion 19 in the flow direction of the first passage 13, in other words, at the tip of the plate-like portion 19. The front end surface 19 b of the plate-like portion 19 is a plane that faces the upstream side of the first passage 13. The recessed portion 19a has a shape recessed toward the downstream side in the flow direction of the first passage 13 with respect to the distal end surface 19b. The recessed portion 19 a forms a cutout portion in which the tip of the plate-like portion 19 is cut out, and the cutout portion communicates the outside and the inside of the plate-like portion 19 in the radial direction of the diff ring gear 7. .

  Further, the recessed portion 19a is directed downward in the flow direction of the first passage 13 from the end portion in the axial direction of the diff ring gear 7 toward the central portion. In other words, the recess 19a has a shape in which the axial width decreases as it goes downstream of the first passage 13. The concave portion 19a of the present embodiment has a U-shape or an arc shape when viewed in the radial direction. The shape of the recess 19a is not limited to this. In addition, it is preferable that the shape of the part in which the width in the axial direction changes in the recess 19a is a curve so that the lubricating oil can be smoothly guided.

  The recess 19a can collect the flow of the lubricating oil guided from the first passage 13 to the second passage 14. The flow of the lubricating oil guided from the first passage 13 to the second passage 14 by the plate-like portion 19 is collected by the recess portion 19a toward the center line C2 of the recess portion 19a in the axial direction, and passes through the center line C2. 5 and 6 (the flow indicated by the arrow Y2 in FIG. 5 and FIG. 6, hereinafter simply referred to as “flow Y2 passing through the center line”). The lubricating oil flowing into the recess 19a is drawn toward the center line C2 by the shape of the recess 19a whose axial width decreases toward the downstream side in the flow direction, and is concentrated in the flow Y2 passing through the center line. .

  Further, since the flow of the recess 19a is concentrated in the flow Y2 passing through the center line, as shown by the arrow Y3, the lubricating oil flowing around the recess 19a is also drawn to the flow Y2 passing through the center line, It merges with the flow Y2 passing through the center line. Thus, the guide member 18 having the recess 19a can smooth the flow of the lubricating oil by concentrating the flow of the lubricating oil guided to the second passage 14. The flow of the lubricating oil is concentrated by the recess 19a and the flow of the lubricating oil in the second passage 14 is adjusted, so that the lubricating oil is more efficiently lubricated upward in the vertical direction than the case where the lubricating oil is distributed in the second passage 14 and flows. It becomes possible to supply oil.

  Moreover, in the lubricating oil supply apparatus 1-1 of this embodiment, the recessed part 19a is arrange | positioned in the position which considered the flow of the lubricating oil sent by the diff ring gear 7. FIG. Thereby, the induction | guidance | derivation efficiency of the lubricating oil by the recessed part 19a can be improved, and the supply capability of the lubricating oil to the vertical direction upper direction by rotation of the diff ring gear 7 can be improved.

  The differential ring gear 7 of this embodiment is a helical gear, and the tooth surface of the differential ring gear 7 faces one side in the axial direction. As shown in FIG. 2, the lubricating oil sent by the diff ring gear 7 is pushed in an oblique direction, that is, one side in the axial direction, depending on the direction of the tooth stripe. In the present embodiment, the lubricating oil is brought to the right side of the vehicle by the diff ring gear 7. This is because the front tooth surface in the rotational direction of the diff ring gear 7 when the vehicle moves forward faces the right side of the vehicle (a predetermined side in the axial direction). Since the lubricating oil is pushed out to the right side of the vehicle by the diff ring gear 7, the lubricating oil flows to the right side of the vehicle in the first passage 13. In other words, the flow velocity and flow rate of the lubricating oil flowing on the right side of the vehicle in the first passage 13 are larger than the flow velocity and flow rate of the lubricating oil flowing on other portions of the first passage 13, for example, the left side of the vehicle.

  As shown in FIGS. 5 and 6, the recessed portion 19 a is disposed on the right side of the vehicle in the plate-like portion 19. As shown in FIG. 6, the center line C <b> 2 of the recess 19 a in the axial direction is located on the right side of the vehicle with respect to the center line C <b> 1 of the plate-like part 19. Therefore, the recessed portion 19 a can efficiently collect the flow of the lubricating oil that is brought to the right side of the vehicle by the tooth surface of the diff ring gear 7 and guide it to the second passage 14. That is, the recess 19a can further concentrate the flow of the lubricating oil on the right side of the vehicle having a large flow velocity and flow rate in the first passage 13 and guide it to the second passage 14. Thereby, the supply capability of the lubricating oil with respect to the oil receiving part 8 by the lubricating oil supply apparatus 1-1 can be improved. In addition, the plate-shaped part 19 of this embodiment is arrange | positioned so that the center line C1 may correspond with the center line of the diff ring gear 7 in an axial direction. That is, the center line C2 of the recess 19a is located on the right side of the vehicle with respect to the center line C1 of the diff ring gear 7.

  In the guide member 18 of the present embodiment, the front end surface 19b of the plate-like portion 19 is orthogonal to the flow direction of the first passage 13, but is not limited thereto. For example, the distal end surface 19b may be inclined so as to be directed to the downstream side in the flow direction of the first passage 13 toward the outer side in the radial direction. In this way, the flow of the lubricating oil guided from the first passage 13 to the second passage 14 can be made smoother. Similarly, the surface of the recessed portion 19 a in the plate-like portion 19 may be inclined so as to go to the downstream side in the flow direction of the first passage 13 toward the outer side in the radial direction.

  In the present embodiment, the first component 11 that forms the first passage 13 and the second component 12 that forms the second passage 14 are integrated, but the present invention is not limited to this. The first component 11 and the second component 12 may be independent. For example, the case 2 may form the first passage 13 as the first component 11, and the second component 12 may form the second passage 14 as a member independent of the case 2.

  In the present embodiment, the case where the lubricating oil supply device 1-1 is provided in the power transmission device of the hybrid vehicle has been described as an example, but the present invention is not limited to this. The lubricating oil supply device 1-1 may be applied to another type, for example, a power transmission device of MT (manual transmission).

  In the present embodiment, the first component portion 11 is opposed to each of the both side surfaces and the outer peripheral surface 7a of the diff ring gear 7, but is not limited thereto, and is opposed to at least one surface of the diff ring gear 7. Just do it.

  Moreover, in this embodiment, although the 2nd structure part 12 was chimney shape (cylindrical shape), it is not limited to this, What is necessary is just a shape which can guide | lead lubricating oil to the oil receiving part 8. FIG. In the present embodiment, the lubricating oil guided upward in the vertical direction by the passage member 10 is supplied to the lubricated portion via the oil receiving portion 8, but the present invention is not limited to this. The lubricating oil guided upward in the vertical direction by the passage member 10 may be directly supplied to the lubricated part without passing through the oil receiving part 8. The lubricating oil supply device 1-1 according to the present embodiment can also be applied to the case where the lubricating oil is directly supplied to a lubricated portion such as MG2 disposed on the upper portion of the power transmission device 1.

  The contents disclosed in the above embodiments can be executed in appropriate combination.

1-1 Lubricating oil supply device for power transmission device 1 Power transmission device 7 Defring gear (rotating member)
8 Oil receiving portion 9 Storage portion 10 Passage member 11 First component portion 12 Second component portion 13 First passage 13c Connection portion (branching portion)
14 Second passage 18 Guide member 19a Recessed portion

Claims (4)

A reservoir for storing lubricating oil;
A rotating member that is connected to driving wheels of the vehicle and that rotates in conjunction with the rotation of the driving wheels to send the lubricating oil in the reservoir;
A passage member for guiding the lubricating oil sent by the rotating member upward in the vertical direction;
With
The passage member is
A first component that extends along an outer periphery of the rotating member and forms a first passage into which lubricating oil sent by the rotating member flows;
A second component that forms a second passage branched from the first passage and extending vertically upward;
The lubricating oil that is provided at a branch portion between the first passage and the second passage and protrudes toward the upstream side in the flow direction of the lubricating oil along the rotation direction of the rotating member, and flows the lubricating oil through the first passage. A guide member leading to the second passage;
I have a,
The upstream side of the flow direction in the guide member is plate-like, and faces the outer peripheral surface of the rotating member in the radial direction of the rotating member,
A lubricating oil supply device for a power transmission device , wherein a concave portion that is recessed toward a downstream side in the flow direction is formed at an upstream end of the guide member in the flow direction . The axial width of the rotating member in the recessed portion, the lubricating oil supply device for a power transmission device according to claim 1 that decreases as it gets closer to the downstream side from the upstream side of the flow direction. The rotating member is a helical gear;
The recess is disposed on a predetermined side in the axial direction of the guide member,
Wherein the predetermined side, a lubricating oil supply device for a power transmission device according to claim 1 or 2, wherein the rotary member is the tooth surface of the rotation direction front face side of the at forward movement of the vehicle. The lubricating oil for a power transmission device according to any one of claims 1 to 3 , further comprising a suppression structure that suppresses the lubricating oil from flowing downstream of the branch portion in the first passage in the flow direction. Feeding device.

Images