JP2016125630A - Transmission and lubrication structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission capable of realizing a superior lubrication state irrespective any rotating direction of a rotating member for scraping up lubricant oil.SOLUTION: A second collector part 26 of an oil garter 20 is arranged in an enclosed region SA constituted by a driving gear G1, an inner wall surface 43 of a case main body 42, a synchronizing mechanism S and a shift fork F. Within the enclosed region SA is fed lubricant oil scraped up by the driving gear G1, a driven gear G1' and a synchronizing mechanism S irrespective of rotating directions of the driving gear G1, driven gear G1' and the synchronizing mechanism S. The lubricant oil fed into the enclosing region SA loses its location and is effectively collected by the second feeding part. With this arrangement as above, not only in the case that the transmission 1 is operated at a forward speed change stage, but also in the case that the transmission is operated at a rearward speed change stage, it is possible to perform a superior collection of lubricant oil by the oil garter 20, so that it is possible to realize a superior lubrication state.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a transmission for performing lubrication using an oil garter and a lubrication structure.

  Japanese Patent Application Laid-Open No. 2013-108595 (Patent Document 1) discloses a first oil collecting unit that collects lubricating oil that has been scraped up by a final driven gear, and a lubricating oil that has been scraped up by a counter reverse gear on an output shaft. And a second oil collecting section for collecting the oil, and a transmission including an oil garter configured to supply the collected lubricating oil to a lubrication target.

  In the transmission, in addition to the lubricating oil scooped up by the final driven gear, the lubricating oil scooped up by the counter reverse gear rotating at a higher rotation than the final driven gear can also be collected by the oil garter. A good lubrication state can be realized even when the rotational speed of the final driven gear is low.

JP 2013-108595 A

  However, in the above-described transmission, when the rotation direction of the final driven gear is reversed, the lubricant driven up by the final driven gear cannot be collected by the oil garter, so the rotation direction of the final driven gear is reversed. There is still room for improvement in terms of improving the lubrication condition.

  The present invention has been made in view of the above, and an object of the present invention is to provide a transmission and a lubrication structure that can realize a good lubrication state regardless of the rotational direction of a rotating body that scoops up lubricating oil.

  The transmission and the lubricating structure of the present invention employ the following means in order to achieve the above-described object.

  According to a preferred embodiment of the transmission according to the present invention, the transmission includes a case body configured to store lubricating oil, a first rotating body, and an oil garter having a collection portion capable of collecting the lubricating oil. ing. In the transmission, the surrounding region is constituted by the first rotating body and the transmission components arranged adjacent to both sides of the first rotating body in the rotation axis direction with the first rotating body interposed therebetween. Further, at least a part of the lubricating oil scraped up by the first rotating body is introduced into the surrounding area regardless of the rotation direction of the first rotating body. And the collection part is comprised so that a part of lubricating oil introduced into the said surrounding area | region can be collected.

  The “transmission component” in the present invention corresponds to a basic component for operating the transmission, and typically includes a gear, a synchro mechanism, a shaft member, a case body, and a shift fork. The operation mechanism is applicable. In addition, in the present invention, the term “squeezed up by the first rotating body” suitably includes a mode in which the first rotating body directly scoops up the lubricating oil stored in the case body and a mode in which the first rotating body is indirectly scraped up. To do. For example, when the first rotating body is a gear, the mode in which the first rotating body scoops up the lubricating oil that has been scooped up by the other gear engaged with the first rotating body corresponds to the mode of indirectly scooping up. . The “go region” in the present invention typically corresponds to a region surrounded by the outer peripheral surface of the first rotating body and the surface of the transmission component facing the first rotating body.

  According to the present invention, the lubricating oil that is scraped up by the first rotating body, introduced into the surrounding area, and collides with surrounding parts such as the first rotating body and the transmission component is effectively collected by the collecting unit. Can be collected. In addition, the lubricating oil scooped up by the first rotating body is introduced into the surrounding area regardless of the rotating direction of the first rotating body, so that the oil garter is lubricated regardless of the rotating direction of the first rotating body. Since oil can be introduced, a good lubrication state can be realized.

  According to the further form of the transmission according to the present invention, the oil garter is installed on the case body so that at least a part of the collecting portion is disposed in the surrounding area.

  Here, as an aspect in which “at least a part of the collection part is disposed in the surrounding area” in the present invention, in addition to an aspect in which at least a part of the collection part is literally disposed in the surrounding area, the collection part An embodiment in which at least a part of the surrounding region is constituted by at least a part of the above is suitably included.

  According to this form, the structure which collects a part of lubricating oil introduced into the surrounding area | region by the collection part can be ensured simply.

  According to the further form of the transmission according to the present invention, the first shaft configured to carry the first rotating body, the first rotating body is configured to have a larger diameter and adjacent to the first rotating body. And a second rotating body supported on the first shaft. The case body has a support portion that supports the first shaft. And the surrounding area | region is comprised by the support part, the 1st rotary body, and the 2nd rotary body.

  According to this embodiment, it is not necessary to arrange the components in a special arrangement in order to configure the surrounding area. That is, since the arrangement of components in a general transmission can be used, a good lubrication state can be realized without causing a significant increase in cost.

  According to the further form of the transmission which concerns on this invention, it has the 2nd axis | shaft supported by the case body so that it might become parallel to the 1st axis | shaft. The first rotating body is configured as a first gear. The second shaft carries a second gear that is configured to mesh with the first gear and that forms part of the surrounding area. And it is comprised so that at least one part of a collection part may be arrange | positioned in the outer peripheral surface of a 1st gearwheel and a 2nd gear, and the position facing the meshing part of a 1st gearwheel and a 2nd gearwheel.

  According to this embodiment, the flow toward the lubricating oil collecting portion that has lost its place in the go region is promoted by the discharge pressure of the lubricating oil discharged from the meshing portion of the first gear and the second gear. Thereby, the collection property of the lubricating oil by a collection part improves. In addition to the inner wall of the case body, the first gear, and the second rotating body, the second gear contributes to the configuration of the surrounding region, so that the surrounding property of the surrounding region is improved. Thereby, the collection property of the lubricating oil by a collection part improves.

  According to the further form of the transmission which concerns on this invention, the 3rd gearwheel which has a rotating shaft line parallel to a 1st axis | shaft is further provided. The third gear is configured to have a larger diameter than the first and second gears. And the oil garter is provided with the 2nd collection part which can collect the lubricating oil scraped up by the 3rd gearwheel.

  According to this embodiment, since the lubricating oil can be collected by the second collecting unit in addition to the collecting unit, more lubricating oil can be collected. Thereby, a lubrication state can be improved more. Since the third gear is configured to have a larger diameter than the first and second gears, a larger amount of lubricating oil can be scooped up than the first and second gears at the same rotational speed.

  According to the further form of the transmission according to the present invention, the first gear is supported so as to be rotatable with respect to the first shaft. The second rotating body is configured as a synchronizer that can selectively fix the first gear to the first shaft. A shift fork that is engaged with the synchro device and can operate the synchro device is further provided, and the shift fork constitutes a part of the surrounding area.

  According to this embodiment, since the shift fork contributes to the structure of the surrounding area in addition to the inner wall of the case body, the first gear, the second gear, and the synchro device, the surrounding performance of the surrounding area is improved. Thereby, the collection property of the lubricating oil by a collection part improves.

  According to the further form of the transmission according to the present invention, in the oil garter, the first flow path through which the lubricating oil collected by the collecting section flows, and the lubricating oil collected by the second collecting section flows. And a second flow path.

  According to the present embodiment, since the lubricating oil collected by each collecting portion is configured to flow through an independent flow path, the lubricating oil collected by the collecting portion flows out of the second collecting portion, The lubricating oil collected by the second collecting part does not flow out of the collecting part. Thereby, the collected lubricating oil can be efficiently supplied to a site requiring lubrication.

  According to the further form of the transmission according to the present invention, the oil garter causes the lubricating oil collected by the collecting portion to flow along a first direction extending substantially parallel to the axial direction of the first shaft. It is configured as follows. And the collection part has a direction change part comprised so that the flow direction of the lubricating oil scraped up by at least one of the 1st rotary body and the 2nd rotary body may be changed to a 1st direction.

  According to this embodiment, the flow direction of the lubricating oil scraped up by the first rotating body and the second rotating body can be changed to the first direction. Thereby, the lubricating oil collected by the collection part can be smoothly flowed in in an oil garter, and the collection property of the lubricating oil by a collection part can be improved.

  According to the further form of the transmission which concerns on this invention, the collection part has a rectification part which rectifies | straightens the flow of the lubricating oil scraped up by at least one of the 1st rotary body and the 2nd rotary body. .

  According to this embodiment, the flow of the lubricating oil that has lost its place in the Go region and becomes a turbulent flow can be rectified by the rectification unit. Thereby, the collection property of the lubricating oil by a collection part can be improved.

  According to the preferred embodiment of the lubrication structure according to the present invention, the lubrication structure for supplying the lubricating oil to the lubrication required portion of the transmission is configured. In the lubricating structure, the transmission includes a case body configured to store lubricating oil, a first rotating body, and an oil garter having a collecting portion capable of collecting lubricating oil. In addition, the surrounding area is configured by the first rotating body and the transmission components disposed adjacent to both sides of the first rotating body in the rotation axis direction with the first rotating body interposed therebetween. Furthermore, at least a part of the lubricating oil scraped up by the first rotating body is introduced into the surrounding area regardless of the rotation direction of the first rotating body. And the oil garter is installed in the case body so that at least a part of the collection part is arranged in the surrounding area.

  The “transmission component” in the present invention corresponds to a basic component for operating the transmission, and typically includes a gear, a synchro mechanism, a shaft member, a case body, and a shift fork. The operation mechanism is applicable. In addition, in the present invention, the term “squeezed up by the first rotating body” suitably includes a mode in which the first rotating body directly scoops up the lubricating oil stored in the case body and a mode in which the first rotating body is indirectly scraped up. To do. For example, when the first rotating body is a gear, the mode in which the first rotating body scoops up the lubricating oil that has been scooped up by the other gear engaged with the first rotating body corresponds to the mode of indirectly scooping up. . The “go region” in the present invention typically corresponds to a region surrounded by the outer peripheral surface of the first rotating body and the surface of the transmission component facing the first rotating body.

  According to the present invention, lubricating oil that has been scraped up by the first rotating body, introduced into the surrounding area, and has lost its place in the surrounding area can be effectively collected by the collecting section. In addition, the lubricating oil scooped up by the first rotating body is introduced into the surrounding area regardless of the rotating direction of the first rotating body, so that the oil garter is lubricated regardless of the rotating direction of the first rotating body. Since oil can be introduced, a good lubrication state can be realized.

  According to the present invention, it is possible to realize a good lubrication state regardless of the rotation direction of the rotating body that scoops up the lubricating oil.

It is a schematic block diagram which shows the outline of a structure of the transmission 1 which concerns on embodiment of this invention. It is the figure which looked at the inside of the transmission 1 which concerns on embodiment of this invention from the axial direction. 2 is a perspective configuration diagram showing a configuration of an oil garter 20. FIG. It is the top view which looked at the oil garter 20 from upper direction. It is the arrow line view which looked at FIG. 3 from the arrow V direction. It is the top view which looked at the oil garter 20 from the downward side. It is the arrow line view which looked at FIG. 3 from the arrow W direction. It is the arrow line view which looked at FIG. 3 from the arrow X direction. It is a principal part enlarged view which expands and shows the 1st collection part. It is a principal part enlarged view which expands and shows the 2nd collection part. It is sectional drawing which shows the YY cross section of FIG. FIG. 3 is a layout diagram showing the arrangement of an oil garter 20. It is the arrow line view which looked at FIG. 12 from the arrow Z direction. It is explanatory drawing which shows the mode of the flow of the lubricating oil scooped up by ring gear RG when the transmission 1 is act | operated by a forward gear position. It is explanatory drawing which shows the mode of the flow of the lubricating oil scooped up by ring gear RG when the transmission 1 is act | operated by a reverse gear. It is explanatory drawing which shows the mode of the flow of the lubricating oil when the transmission 1 is act | operated by a forward gear position. It is explanatory drawing which shows the mode of the flow of lubricating oil when the transmission 1 is act | operated by a reverse gear.

  Next, the best mode for carrying out the present invention will be described using examples.

  As shown in FIG. 1, a transmission 1 including an oil garter 20 according to the present embodiment includes a first input shaft 2 connected to a rotating shaft (not shown) of an electric motor 3, and a first input shaft 2. The second input shaft 4 arranged coaxially with the first input shaft 2 on the outer periphery, the clutch 6 for connecting and releasing the connection between the first input shaft 2 and the second input shaft 4, and the clutch 6 are operated. The actuator 8 that rotates, the output shaft 10 arranged in parallel with the first input shaft 2 and the second input shaft 4, and the rotation of the first input shaft 2 and the second input shaft 4 are shifted and transmitted to the output shaft 10. A transmission mechanism 12, a differential mechanism 16 that transmits rotation of the output shaft 10 to the left and right axles 14, 15, an oil garter 20 according to the present embodiment, and a transmission case 18 that accommodates them are provided. The first input shaft 2 corresponds to the “first shaft” in the present invention, the output shaft 10 corresponds to the “second shaft” in the present invention, and the transmission case 18 corresponds to the “case body” in the present invention. It is an example of the corresponding implementation structure.

  The transmission 1 includes a first transmission path for transmitting rotation of a rotation shaft (not shown) of the electric motor 3 from the first input shaft 2 to the output shaft 10 via the transmission mechanism 12, and a rotation shaft of the electric motor 3 (see FIG. And a second transmission path for transmitting the rotation of the second input shaft 4 to the output shaft 10 via the speed change mechanism 12. In the present embodiment, for convenience of explanation, the direction along the axes of the first and second input shafts 2 and 4 and the output shaft 10 is defined as an “axial direction”. 2 is defined as “upper side” or “upper side”, and the lower side of the page is defined as “lower side” or “lower side”.

  As shown in FIG. 2, the first and second input shafts 2, 4, the output shaft 10, and the axles 14, 15 have a central axis of the first and second input shafts 2, 4 and a central axis of the output shaft 10. The connecting center line CL1 and the center line CL2 connecting the center axis of the output shaft 10 and the center axes of the axles 14 and 15 are arranged in a substantially V shape. That is, the output shaft 10 is arranged so that the central axis is on the lowest side.

  As shown in FIG. 1, the clutch 6 includes a flywheel 62, a clutch disk 64, and a clutch cover 66. The flywheel 62 is attached and fixed to the outer peripheral surface of the first input shaft 2 by spline fitting so as to rotate integrally with the first input shaft 2. The clutch disc 64 is attached and fixed to the outer peripheral surface of the second input shaft 4 by spline fitting or the like so as to rotate integrally with the second input shaft 4.

  As shown in FIG. 1, the clutch cover 66 includes a cover 66 a, a pressure plate 66 b, and a diaphragm spring 66 c, and is attached and fixed to the flywheel 62 so as to rotate integrally with the flywheel 62. The pressure plate 66b is configured to sandwich the clutch disc 64 with the flywheel 62.

  When the pressure plate 66b presses the clutch disc 64 against the flywheel 62, the first input shaft 2 and the second input shaft 4 are connected, and the pressure plate 66b presses the clutch disc 64 against the flywheel 62. As a result, the connection between the first input shaft 2 and the second input shaft 4 is released.

  As shown in FIG. 1, the actuator 8 includes a motor 82, a reduction gear mechanism 84, and a slider 86.

  The slider 86 is configured to reciprocate linearly in the axial direction by being rotated by the motor 82 via the reduction gear mechanism 84. The slider 86 is connected to a diaphragm spring 66c via a release bearing RB. When the slider 86 reciprocates linearly in the axial direction, the pressure plate 66b reciprocates in the axial direction via the diaphragm spring 66c.

  As shown in FIG. 1, the speed change mechanism 12 includes a drive gear G1 rotatably disposed on the first input shaft 2, a drive gear G2 fixedly disposed on the second input shaft 4, and a drive gear G1. A driven gear G1 ′ that is meshed and fixedly arranged on the output shaft 10, a driven gear G2 ′ that meshes with the driving gear G2 and is fixedly arranged on the output shaft 10, and the first input shaft 2 And a synchro mechanism S disposed in the.

  The driving gear G1 corresponds to the “first rotating body” and the “first gear” in the present invention, and the driven gear G1 ′ is an example of an implementation configuration corresponding to the “second gear” in the present invention. The synchro mechanism S is an example of an implementation configuration corresponding to the “transmission component”, the “second rotating body”, and the “sync device” in the present invention.

  As shown in FIG. 1, the driving gear G1 is configured to have a smaller diameter than the driving gear G2, and the driven gear G1 'is configured to have a larger diameter than the driven gear G2'. Thereby, the gear ratio constituted by the drive gear G1 and the driven gear G1 ′ is larger than the gear ratio constituted by the drive gear G2 and the driven gear G2 ′, and the rotation of the electric motor 3 When the rotational speed of a shaft (not shown) is constant, the rotational speed transmitted from the first input shaft 2 to the output shaft 10 via the drive gear G1 and the driven gear G1 ′ is the second input shaft 4. From the rotational speed transmitted to the output shaft 10 via the drive gear G2 and the driven gear G2 ′. That is, the first transmission path is configured as a low-speed transmission path, and the second transmission path is configured as a high-speed transmission path.

  As shown in FIG. 1, the synchro mechanism S includes a synchro hub 52 that is integrally attached and fixed to the first input shaft 2, and a coupling sleeve that is spline-fitted to the outer peripheral surface of the synchro hub 52 so as to be axially movable. 54, a synchronizer ring (not shown), and a clutch gear 56 that is integrally fixed to the drive gear G1. The synchronization mechanism S is disposed between the drive gear G1 and the drive gear G2.

  As shown in FIG. 1, a shift fork F is engaged with the outer peripheral surface of the coupling sleeve 54, and the coupling sleeve 54 is moved in the axial direction by the shift fork F. When the coupling sleeve 54 is moved in the axial direction toward the clutch gear 56, the coupling sleeve 54 and the clutch gear 56 are engaged, and the drive gear G 1 is fixed to the first input shaft 2 so as not to rotate relative to the first input shaft 2. The

  Further, the coupling sleeve 54 and the clutch gear 56 are moved in the axial direction from the state in which the drive gear G1 is fixed so as not to rotate relative to the first input shaft 2 to the drive gear G2 side. Is disengaged, and the drive gear G1 can rotate relative to the first input shaft 2.

  The differential mechanism 16 is configured as a differential device that distributes and transmits power while absorbing a speed difference (rotational speed difference) generated between the left and right axles 14 and 15, and has a large diameter as shown in FIG. A ring gear 70 is provided. The ring gear 70 meshes with an output gear GO fixedly attached to the output shaft 10. Further, as shown in FIGS. 12 and 13, the ring gear 70 is configured as a helical gear having a left-handed twist. The ring gear 70 is an example of an implementation configuration corresponding to the “third gear” in the present invention.

  As shown in FIG. 1, the transmission case 18 includes a case main body 42 configured to accommodate the first and second input shafts 2 and 4, the output shaft 10, the transmission mechanism 12, and the oil garter 20, and the clutch 6. And a clutch housing 44 configured to accommodate a part of the actuator 8 (the reduction gear mechanism 84 and the slider 86), and a differential case portion 46 configured to accommodate the differential mechanism 16.

  As shown in FIG. 12, a holding recess 42a for holding the bearing B1 is formed in the inner wall surface 43 of the case main body 42. The holding recess 42a is open to the inside of the case body 42 (on the side where the first and second input shafts 2 and 4, the output shaft 10, the speed change mechanism 12, and the oil garter 20 are accommodated).

  The bearing B1 is configured to rotatably support the first input shaft 2. The case main body 42 and the bearing B1 correspond to the “transmission component” in the present invention, and the inner wall surface 43 and the bearing B1 are an example of an implementation configuration corresponding to the “support portion” in the present invention.

  Further, as shown in FIG. 12, the case body 42 is formed with a recess 42b that is continuous with the holding recess 42a in a stepped manner on the side opposite to the opening side of the holding recess 42a. Further, the case body 42 is formed with a passage 42c having one end opened to the recess 42b and the other end opened to the inside of the case body 42.

  As shown in FIGS. 3 to 7, the oil garter 20 includes a first collection part 22, a flow path part 24, a second collection part 26, and a lead-out part 28. As shown in FIG. 1, the longitudinal length of the oil garter 20 is configured to be substantially the same as the entire length of the output shaft 10. The 1st collection part 22 respond | corresponds to the "2nd collection part" in this invention, and the 2nd collection part 26 is an example of the implementation structure corresponding to the "collection part" in this invention.

  As shown in FIG. 9, the first collecting portion 22 has two radii of a fan-shaped flat surface portion 22a having a substantially fan shape in plan view, an arc surface portion 22b connected to the arc portion of the fan-shaped flat surface portion 22a, and the fan-shaped flat surface portion 22a. A plane part 22c connected to one of the radial parts, and a box in which the opposite surface side of the sectoral plane part 22a and the other radius part of the two radius parts of the sectoral plane part 22a are opened Configured.

  Note that, on the opposite surface side of the fan-shaped flat surface portion 22a, a closed flat surface portion 22d is formed which closes the opening over a predetermined range from the intersecting portion of the circular arc surface portion 22b and the flat surface portion 22c toward the other radial portion side. .

  As shown in FIGS. 3 and 4, the flow path portion 24 includes a straight portion 24 a and an inclined portion 24 b. As shown in FIG. 11, the flow path portion 24 includes a flow path 25 through which lubricating oil flows. As shown in FIGS. 3 and 4, the straight portion 24a is connected to the flat portion 22c of the first collecting portion 22, and is configured to extend linearly along the tangential direction of the arcuate surface portion 22b. Yes.

  As shown in FIGS. 3 and 4, the inclined portion 24 b is configured to extend in a direction inclined by a predetermined angle with respect to the extending direction of the linear portion 24 a. The inclined portion 24b extends in a direction away from the opening on the other radial portion side of the sector flat portion 22a.

  As shown in FIG. 11, the flow path 25 is composed of a main flow path 25a and a sub flow path 25b. The main flow path 25 a is configured to flow the lubricating oil collected by the first collecting unit 22 to the outlet unit 28. The sub-flow channel 25 b is configured to flow the lubricating oil collected by the second collecting unit 26 to the outlet unit 28.

  As described above, the lubricating oil collected by the first collecting unit 22 and the lubricating oil collected by the second collecting unit 26 flow through different flow paths 25 (the main flow path 25a and the sub flow path 25b). By adopting the configuration, the lubricating oil collected by the first collecting unit 22 flows out from the second collecting unit 26 provided downstream from the first collecting unit 22 in the flow direction of the lubricating oil. Can be prevented. The main flow path 25a corresponds to the “second flow path” in the present invention, and the sub flow path 25b is an example of an implementation configuration corresponding to the “first flow path” in the present invention.

  As shown in FIGS. 3 and 10, the second collection part 26 is provided integrally with the flow path part 24 in the vicinity of the connection part between the straight line part 24 a and the inclined part 24 b of the flow path part 24. The 2nd collection part 26 has side wall 26a, 26b and the bottom wall 26c, and is comprised by the substantially shell shape. The 2nd collection part 26 is comprised so that it may open toward the side where an angle is small among the angles which the linear part 24a and the inclination part 24b make.

  As shown in FIG. 8, the side wall 26a is formed in a shape in which a part of the sector shape (a portion near the central angle) is cut away when viewed from the extending direction of the straight portion 24a of the flow path portion 24 (the paper surface direction in FIG. 8). Has been. The notch has a shape for avoiding interference with the shift fork F. As shown in FIGS. 3, 8, and 10, the side channel 26 b is opened with a sub channel 25 b of the channel unit 24.

  As shown in FIGS. 3, 8, and 10, the bottom wall 26c is formed in a curved surface along the arc portion of the side wall 26a. As shown in FIGS. 3, 5, and 10, the bottom wall 26 c is integrally provided with the rectifying rib 32 and the direction changing rib 34.

  Here, “provided integrally” typically corresponds to a mode in which the rectifying rib 32 and the direction changing rib 34 are integrally formed on the bottom wall 26c. 34 is formed in a separate body from the bottom wall 26c, and then preferably integrated with the bottom wall 26c. The rectifying rib 32 corresponds to the “rectifying portion” in the present invention, and the direction changing rib 34 is an example of an implementation configuration corresponding to the “direction changing portion” in the present invention.

  As shown in FIGS. 3 and 10, the rectifying rib 32 is connected to the flow path portion 24 of the bottom wall 26 c from the open end portion of the bottom wall 26 c (the end portion opposite to the connection portion side with the flow path portion 24). Extending toward the end of the connecting portion (hereinafter referred to as “connecting end”). That is, the rectifying rib 32 extends along a direction (perpendicular direction) intersecting with the extending direction of the straight portion 24 a of the flow path portion 24. A plurality of the rectifying ribs 32 are provided along the extending direction of the linear portion 24a, and form a comb shape.

  As shown in FIGS. 3, 5, and 10, the direction changing rib 34 is provided further on the connection end side than the end surface on the connection end side of the rectifying rib 32. The direction changing rib 34 extends from the side wall 26a to the side wall 26b (opening of the sub flow path 25b). That is, the direction changing rib 34 extends along a direction intersecting with the extending direction of the rectifying rib 32. The direction change rib 34 is configured to have an upward inclination from the side wall 26a toward the side wall 26b (opening of the sub flow path 25b).

  As shown in FIGS. 3, 8, and 10, the lead-out portion 28 is configured in a cylindrical shape and is connected to the inclined portion 24 b of the flow path portion 24. The lead-out part 28 extends along a direction parallel to the extending direction of the straight part 24 a of the flow path part 24.

  As shown in FIG. 12, the oil garter 20 configured in this way is connected to the transmission case 18 so that the lead-out portion 28 is connected to the passage 42 c of the case body 42 and the longitudinal direction is parallel to the axial direction of the output shaft 10. It is attached.

  At this time, as shown in FIGS. 12 and 13, the first collection part 22 is arranged so that the opening faces the outer peripheral surface of the ring gear 70, and the second collection part 26 is arranged in FIGS. 12 and 13. As shown, it is surrounded by the inner wall surface 43 of the transmission case 18 (case body 42), the drive gear G1 and the driven gear G1 ′, the synchro mechanism S (particularly the synchro hub 52 and the coupling sleeve 54), and the shift fork F. It is arranged in the surrounding area SA.

  As shown in FIGS. 12 to 14, the second collection portion 26 has an opening in the surrounding area SA whose opening is the drive gear G 1, the driven gear G 1 ′, and the synchro mechanism S (in particular, the sync hub 52 and the coupling). The sleeve 54) is disposed so as to face the outer peripheral surface. In particular, a part of the opening of the second collection part 26 faces the meshing part of the driving gear G1 and the driven gear G1 '.

  Next, the operation of the transmission 1 configured as described above, particularly the operation when the lubricating oil scraped up by the ring gear 70 is supplied to the lubrication-required part such as the transmission mechanism 12 will be described. First, the case where the transmission 1 is operated at the forward shift stage will be described, and then the case where the transmission 1 is operated at the reverse shift stage will be described.

  When the transmission 1 is operated at the forward shift speed and the ring gear 70 rotates (counterclockwise in FIG. 14), the lubricating oil stored in the transmission case 18 (case body 42) is scraped up. The lubricating oil that has been scraped up is collected by the first collection unit 22 as shown by an arrow A in FIG. The lubricating oil collected by the first collecting unit 22 is introduced into the main channel 25 a of the channel unit 24.

  Here, since the 1st collection part 22 is opened facing the outer peripheral surface of the ring gear 70, it can collect lubricating oil effectively. Further, the lubricating oil collected by the first collecting part 22 is smoothly introduced into the main flow path 25 a by the arc surface part 22 b of the first collecting part 22.

  Since the ring gear 70 is configured as a helical gear having a left-handed twist, the lubricating oil scraped up by the ring gear 70 is scattered in the direction toward the flow path portion 24 as shown by an arrow D in FIG. Therefore, introduction into the flow path 25 is promoted.

  On the other hand, the drive gear G1, the sync mechanism S (especially the sync hub 52 and the coupling sleeve 54), and the rotation of the driven gear G1 ′ (the drive gear G1 and the sync mechanism S are counterclockwise in FIG. 14, and the driven gear G1 ′. Represents the inner wall surface 43 of the transmission case 18 (case main body 42), the driving gear G1 and the driven gear G1 ′, the synchro mechanism S (in particular, the synchro hub 52 and It is introduced into the surrounding area SA surrounded by the coupling sleeve 54) and the shift fork F, and is collected by the second collecting section 26 as shown by an arrow E in FIG. The lubricating oil collected by the second collection unit 26 is introduced into the sub-flow channel 25 b of the flow channel unit 24.

  Here, since the second collection portion 26 is disposed in the surrounding area SA, it is introduced into the surrounding area SA, and the inner wall surface 43, the drive gear G1, and the driven gear of the transmission case 18 (case body 42). Lubricating oil that has collided with the gear G1 ′, the synchronization mechanism S (in particular, the synchronization hub 52 and the coupling sleeve 54) and the shift fork F can be effectively collected by the second collection portion 26.

  The second collection portion 26 is opened to face the meshing portion of the drive gear G1 and the driven gear G1 ′ and the outer peripheral surface of the synchro mechanism S (in particular, the synchro hub 52 and the coupling sleeve 54). Therefore, lubricating oil can be collected more effectively.

  In particular, the lubricating oil discharged from the meshing portion of the driving gear G1 and the driven gear G1 'into the surrounding area SA is promoted to flow toward the second collecting portion 26 by the momentum of the discharge.

  Further, since the second collection portion 26 has the flow straightening rib 32 and the direction changing rib 34, the flow of the lubricating oil that hits the surrounding parts in the surrounding area SA is straightened by the flow straightening rib 32 and the flow straightening is performed. The flow direction of the lubricating oil thus made can be changed by the direction changing rib 34 to flow toward the sub-flow path 25b. As a result, the lubricating oil collected by the second collecting portion 26 can smoothly flow into the sub-flow channel 25b, and the lubricating oil collecting property is improved.

  As shown in FIG. 16, the lubricating oil introduced into the main flow path 25a and the sub flow path 25b is merged in the lead-out portion 28, and passes through the passage 42c and the concave portion 42b of the case main body 42, so that the first input shaft 2 A portion requiring lubrication (for example, a pilot bearing or a synchronizer ring disposed between the first input shaft 2 and the second input shaft 4, the drive gear G1 and the first input shaft) 2 is supplied to a needle bearing or the like disposed between the two.

  Next, a case where the transmission 1 is operated at the reverse shift stage will be described. When the transmission 1 is operated at the reverse gear, the ring gear 70 rotates in the opposite direction to that when the transmission 1 is operated at the forward gear (clockwise in FIG. 15). Thereby, the lubricating oil stored in the transmission case 18 (case body 42) is scraped up in the opposite direction to the case where the transmission 1 is operated at the forward shift speed. Therefore, the lubricating oil scraped up by the ring gear 70 is hardly collected by the first collecting unit 22.

  On the other hand, the driving gear G1, the synchronizing mechanism S (in particular, the synchronizing hub 52 and the coupling sleeve 54), and the rotation of the driven gear G1 ′ (the driving gear G1 and the synchronizing mechanism S are clockwise in FIG. 15, and the driven gear G1 ′ is Although the lubricating oil scooped up by the counterclockwise rotation in FIG. 15 is not discharged from the meshing portion of the drive gear G1 and the driven gear G1 ′ as compared with the case where the transmission 1 is operated at the forward shift speed, Lubricating oil that has been introduced into the surrounding area SA and has been flying against the surrounding parts in the surrounding area SA is collected by the second collecting section 26. The lubricating oil collected by the second collecting unit 26 is introduced into the sub-flow channel 25 b of the flow channel unit 24 and is derived from the deriving unit 28.

  Then, as shown in FIG. 17, the lubricating oil led out from the lead-out portion 28 passes through the passage 42c of the case main body 42 and the concave portion 42b as in the case where the transmission 1 is operated at the forward shift speed. A portion requiring lubrication (for example, a pilot bearing or a synchronizer ring disposed between the first input shaft 2 and the second input shaft 4, the drive gear G 1 and the first gear) from the in-shaft oil passage 2 a formed inside the input shaft 2. 1 is fed to a needle bearing or the like disposed between the input shaft 2 and the like.

  According to the transmission 1 according to the present embodiment described above, when the transmission 1 is operated at the forward shift speed, the lubricating oil scooped up by the ring gear 70 can be repaired satisfactorily. Is not only operated at the forward shift speed but also when operated at the reverse shift speed, the lubricating oil introduced into the surrounding area SA can be collected well by the oil garter 20, which is good. It is possible to realize a proper lubrication state.

  In the present embodiment, the surrounding area SA is formed by the drive gear G1, the inner wall surface 43 of the case body 42, the synchro mechanism S (the synchro hub 52 and the coupling sleeve 54), the shift fork F, and the driven gear G1 ′. However, it is not limited to this.

  For example, a configuration in which the surrounding area SA is formed by a small-diameter gear and two large-diameter gears arranged on both sides in the axial direction of the small-diameter gear with the small-diameter gear interposed therebetween, a gear, and the gear If the basic components for operating the transmission 1 such as a configuration in which the surrounding area SA is formed by two synchro mechanisms arranged on both sides in the axial direction of the gear with the shaft interposed therebetween, the surrounding area SA can be used. The constituent parts may be any combination.

  In the present embodiment, the oil garter 20 is configured to include the first collection unit 22 and the second collection unit 26. However, even if the first collection unit 22 is not provided, the forward shift stage and the reverse drive are provided. There may be a second collecting portion 26 that can collect the lubricating oil satisfactorily during the operation of both gear positions.

  In the present embodiment, the second collecting portion 26 is provided with the rectifying rib 32 and the direction changing rib 34, but the second collecting portion 26 is provided with only the rectifying rib 32, or the second collecting portion 26. Even if the configuration in which only the direction change rib 34 is provided in the configuration or the configuration in which the second collection portion 26 does not have both the flow straightening rib 32 and the direction change rib 34, the lubricating oil introduced into the surrounding area SA is used. It does not matter if it can be collected.

  In the present embodiment, the oil garter 20 is provided with the main flow path 25a and the sub flow path 25b, but there may be only one flow path.

  In the present embodiment, the configuration is applied to a two-stage switching transmission, but is not limited thereto. For example, the present invention may be applied to a transmission capable of switching two or more stages, for example, a manual transmission such as a five-speed shift or a six-speed shift.

  In this embodiment, the transmission 1 has two input shafts. However, a normal transmission having only one input shaft may be used.

  This embodiment shows an example for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment.

1 Transmission 2 First input shaft (first shaft)
2a Oil path in shaft 3 Electric motor 4 Second input shaft 6 Clutch 8 Actuator 10 Output shaft (second shaft)
12 Transmission mechanism 14 Axle 15 Axle 16 Differential mechanism 18 Transmission case (case body)
20 Oil Gata (Oil Gata)
22 1st collection part (2nd collection part)
22a Fan-shaped plane part 22b Arc surface part 22c Plane part 24 Channel part 24a Straight line part 24b Inclined part 25 Channel 25a Main channel (second channel)
25b Sub channel (first channel)
26 Second collection part (collection part)
26a side wall 26b side wall 26c bottom wall 28 lead-out part 32 rectification rib (rectification part)
34 Direction change rib (direction change part)
42 Case body (transmission component)
42a Holding recess 42b Recess 42c Passage 43 Inner wall surface (support)
44 Clutch housing 46 Differential case part 52 Synchro hub 54 Coupling sleeve 56 Clutch gear 62 Flywheel 64 Clutch disc 66 Clutch cover 66a Cover 66b Pressure plate 66c Diaphragm spring 70 Ring gear (third gear)
82 Motor 84 Reduction gear mechanism 86 Slider CL1 Center line CL2 Center line RB Release bearing G1 Drive gear (first rotating body, first gear)
G2 Drive gear G1 'Driven gear (second gear)
G2 ′ Driven gear S Synchro mechanism (transmission component, second rotating body, synchro device)
F Shift fork (shift fork)
GO output gear B1 bearing (transmission component, support)
SA Go area (Go area)

Claims (10)

A case body configured to store lubricating oil; and
A first rotating body;
An oil garter having a collecting part capable of collecting lubricating oil;
With
The surrounding area is constituted by the first rotating body and a transmission component arranged adjacent to both sides of the first rotating body in the rotation axis direction across the first rotating body,
Regardless of the rotation direction of the first rotating body, at least a part of the lubricating oil scooped up by the first rotating body is configured to be introduced into the surrounding area,
The said collection part is comprised so that a part of lubricating oil introduced into the said surrounding area | region can be collected. Transmission. The transmission according to claim 1, wherein the oil garter is installed in the case body so that at least a part of the collection portion is disposed in the surrounding area. A first shaft configured to support the first rotating body, and a second shaft configured to have a larger diameter than the first rotating body and to be adjacent to the first rotating body. A rotating body,
The case body has a support portion for supporting the first shaft,
The transmission according to claim 1, wherein the surrounding region is configured by the support portion, the first rotating body, and the second rotating body. A second shaft supported by the case body so as to be parallel to the first shaft;
The first rotating body is configured as a first gear,
The second shaft carries a second gear that is configured to mesh with the first gear and that forms part of the surrounding region,
It is comprised so that at least one part of the said collection part may be arrange | positioned in the outer peripheral surface of the said 1st gearwheel and the said 2nd gearwheel, and the position facing the meshing part of the said 1st gearwheel and the said 2nd gearwheel. The transmission according to claim 3. A third gear having a rotation axis parallel to the first axis;
The third gear is configured to have a larger diameter than the first and second gears,
The transmission according to claim 4, wherein the oil garter includes a second collecting portion capable of collecting the lubricating oil scraped up by the third gear. The first gear is rotatably supported with respect to the first shaft;
The second rotating body is configured as a synchro device capable of selectively fixing the first gear to the first shaft,
The transmission according to claim 4, further comprising a shift fork that is engaged with the synchro device and that can operate the synchro device, and the shift fork forms a part of the surrounding region. The oil garter is configured to have a first channel through which the lubricating oil collected by the collecting unit flows and a second channel through which the lubricating oil collected by the second collecting unit flows. The transmission according to claim 5 according to claim 5 or claim 5. The oil garter is configured to flow the lubricating oil collected by the collecting portion along a first direction extending substantially parallel to the axial direction of the first shaft,
The collection unit has a direction changing unit configured to change the flow direction of the lubricating oil scraped up by at least one of the first rotating body and the second rotating body to the first direction. The transmission according to any one of claims 3 to 7.   The said collection part has a rectification | straightening part which rectifies | straightens the flow of the lubricating oil scraped up by at least one of the said 1st rotary body and the said 2nd rotary body. The described transmission. A lubrication structure for supplying lubricating oil to a lubrication required portion of a transmission,
The transmission includes a case body configured to store lubricating oil, a first rotating body, and an oil garter having a collection portion capable of collecting the lubricating oil,
The surrounding area is constituted by the first rotating body and a transmission component arranged adjacent to both sides of the first rotating body in the rotation axis direction across the first rotating body,
Regardless of the rotation direction of the first rotating body, at least a part of the lubricating oil scooped up by the first rotating body is configured to be introduced into the surrounding area,
The lubricating structure in which the oil garter is installed in the case body so that at least a part of the collection part is disposed in the surrounding region.

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