JP2013108595A - Oil gutter plate of transmission, and transmission equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil gutter plate efficiently capturing the oil splashed up by gears and supplying an optimum amount of oil to the parts requiring lubrication even at low vehicle speed.SOLUTION: The oil gutter plate includes: a first oil capture part 81 capturing the oil splashed up by rotation of the final driven gear 61; a first oil passage 72 extending from the first oil capture part 81 to a lead-out end 73; a second oil capture part 83 arranged adjacent to the sides of the first oil capture part 81 and the first oil passage 72 and capturing the oil splashed up by rotation of the counter reverse gear 17; and a partition wall 82 provided in a standing manner between the first oil capture part 81 and the second oil capture part 83 and extending axially. The partition wall 82 is set at a size higher than the side wall 72b of another portion in the first oil passage 72 and therefore the oil splashed up by the gears 61, 17 can be caught by the partition wall 82 and captured efficiently.

Description

  The present invention relates to an oil gutter plate that is installed in a case of a transmission such as a manual transmission and guides the oil in the case scraped up by a rotating element such as a gear to the supply destination by gravity. It is related with the transmission provided with.

  2. Description of the Related Art Conventionally, various transmissions such as a manual transmission (MT) have a lubricating oil supply structure that supplies oil in a case to a place where lubrication is required, such as a bearing and a gear that support a rotating shaft. Such a lubricating oil supply structure includes a forced lubrication type using an oil pump and a natural lubrication type using a gear-up oil. In transmissions, these lubrication oil supply structures are used to form and cool the gear tooth surfaces, the inside of the rotating shaft, and the support bearings, etc., so that smooth operation and strength durability of each part in the case is achieved. Is secured.

  Here, in the above-described forced lubrication type, since the hydraulic pressure is generated by driving the pump, the supply amount of lubricating oil necessary for each part can be adjusted mainly. Therefore, it is possible to supply an appropriate amount of oil to a portion requiring lubrication by using an oil pipe or the like. On the other hand, there are concerns that an increase in the number of lubricating system components including an oil pump and an oil pipe may lead to a complicated transmission structure and an increase in cost and weight. On the other hand, in the natural lubrication type, oil accumulated at the bottom of the case is scraped up by a final driven gear or the like, stored in the upper part of the case, and then flows down by its own weight to supply to a portion requiring lubrication. In this case, as shown in Patent Document 1, it is general to guide and supply the oil scraped up by the gear to the portion to be lubricated by a bowl-shaped oil gutter plate. This natural lubrication type does not require an oil pump or the like, so that the number of parts of the transmission can be reduced and the structure can be simplified. However, on the other hand, since the oil pumped up by the gear is supplied in a natural flow, there is a risk that the amount of oil supplied to a portion requiring lubrication will be insufficient. Therefore, it is necessary to optimize the shape and the like of the oil gutter plate so that the oil scraped up by the gear can be efficiently captured and supplied.

  The oil gutter plate described in Patent Document 1 is configured to capture and lubricate the oil scooped up by the final driven gear. However, at low vehicle speeds, the amount of oil that can be captured decreases because the rotational speed of the final driven gear is low. For this reason, there is a possibility that a sufficient oil supply amount to the lubricated portion cannot be secured at low vehicle speeds only by capturing the oil scooped up by the final driven gear.

Japanese Patent No. 4573410

  The present invention has been made in view of the above-described points, and its purpose is to more efficiently capture oil scraped up by a rotating element such as a gear so that it can be lubricated even at low vehicle speeds. An object of the present invention is to provide an oil gutter plate for a transmission capable of supplying an appropriate amount of oil, and a transmission including the same.

  The present invention for solving the above problems includes a case (5), an input shaft (10) and an output shaft (12) installed in parallel in the case (5), an input shaft (10) and an output shaft ( 12) and a gear train (55) composed of a plurality of gears (40 to 45, 46 to 51) and a gear (61) of the differential device (62) to which the rotation of the output shaft (12) is transmitted. ) Including a gear (17) on the output shaft (12) and a gear (61) of the differential (62). ) Is an oil gutter plate (70) for guiding the oil scraped by the rotating element in the inside to the supply destination to be lubricated, and is scraped by the rotation of the gear (61) of the differential gear (60). From the first oil catcher (81) and the first oil catcher (81) A first oil passage (72) extending along the axial direction of the input shaft (10) and the output shaft (12) to the lead-out end (73) from which the oil is led, a first oil catcher (81), and a first oil A second oil catcher (83) disposed adjacent to the passage (72) and catching up the oil scooped up by the rotation of the gear (17) on the output shaft (12); 83) a second oil passage (75) for joining the oil captured in the first oil passage (72), a first oil capturing portion (81) and a first oil passage (72), and a second oil A partition wall (82) that is provided between the capturing portion (83) and the second oil passage (75) and extends in the axial direction, and the height of the partition wall (82) is the first oil. Side wall (72 of the other part in the capture part (81) and the first oil passage (72) Characterized in that it is set to a higher dimension than).

  According to the oil gutter plate according to the present invention, in addition to the first oil capturing unit that captures the oil scraped up by the rotation of the gear of the differential gear, the oil scraped up by the rotation of the gear on the output shaft By providing the second oil trapping part to trap, not only the oil scraped up by the gear of the differential gear, but also the oil in the case is scooped up in the region of higher rotation than the gear of the differential gear. Since the oil scraped up by the gear on the output shaft can be captured, the amount of oil captured by the oil gutter plate can be increased. In particular, when a vehicle equipped with a transmission equipped with this oil gutter plate is traveling at a low speed, the number of rotations of the gears of the differential gear decreases, so that Alone, there is a risk that the amount of oil required to lubricate each part of the transmission may be insufficient, but even in that case, the gear on the output shaft that is rotating at a higher speed than the gear of the differential gear is scraped up. The oil can effectively supplement the amount of oil necessary for lubrication of each part.

  In the oil gutter plate according to the present invention, a partition wall is provided between the first capturing part and the first oil passage and the second capturing part and the second oil passage, and the height dimension of the partition wall is set to the first capturing part. By setting the dimension higher than the side wall of the other part in the part and the first oil passage, the oil scraped up by the gear of the differential gear and the gear on the output shaft is efficiently received by the partition wall, and the first, The second oil catcher can catch the oil. Therefore, the amount of oil captured by the oil gutter plate can be increased. That is, if the height dimension of the partition wall is set to the same or lower dimension than the other side walls of the first trapping portion and the first oil passage, the differential gear or the gear on the output shaft is scraped up. Of the oil that has flown, the oil that has flowed to a higher position is not received by the partition wall, but jumps over the first and second oil catching portions and falls to the opposite side. Therefore, the amount of oil captured by the oil gutter plate cannot be increased.

  In the above oil gutter plate, the rib-like rib (74) having a height lower than that of the partition wall (82) is formed on the opposite side of the partition wall (82) from the first oil passage (72). The second oil catcher (83) and the second oil passage (75) may be defined between the bowl-shaped rib (74) and the partition wall (82).

  According to this configuration, it is possible to provide the second oil catching portion and the second oil passage for catching the oil scraped up by the gear on the output shaft only by forming the hook-shaped rib on the outside of the partition wall. . Therefore, it is possible to increase the amount of oil captured by the oil gutter plate without complicating the shape and size of the oil gutter plate.

  Further, in the above oil gutter plate, the joining portion (76) for joining the second oil passage (75) to the first oil passage (72) at a position corresponding to the downstream end of the partition wall (82). The oil in the first oil passage (72) is discharged and input to the side wall (72c) between the junction (76) and the outlet end (73) in the first oil passage (72). An oil discharge part (77) for supplying a component including a gear train provided between the shaft (10) and the output shaft (12) may be provided.

  According to this configuration, the merging portion where the second oil passage merges with the first oil passage is provided upstream of the oil discharge portion that supplies oil to the gear train provided between the input shaft and the output shaft. Thus, the flow rate of oil flowing through the position of the oil discharge portion can be increased. Therefore, it is possible to effectively prevent a shortage of oil supplied to a gear train provided between the input shaft and the output shaft.

  In this case, the oil flowing through the first oil passage (72) is guided to the oil discharge portion (77) side on the bottom surface (72a) of the first oil passage (72) on the downstream side of the joining portion (76). For this purpose, a rectifying rib (78) is preferably formed. By providing such a rectifying rib, the flow rate of oil discharged from the oil discharge portion can be secured. Therefore, it is possible to effectively lubricate the gear train provided between the input shaft and the output shaft.

  In the oil gutter plate, the oil scraped up by the gear (61) of the differential (62) at a position opposite to the second oil passage (75) across the first oil passage (72). It is preferable to form a third oil catching portion (85) configured such that a part of the oil is guided along the inner surface (5a) of the case (5).

  According to this structure, the oil which is scraped up by the gear of the differential and hits the inner surface of the case can be captured by the third oil capturing unit. Therefore, the amount of oil captured by the oil gutter plate can be increased.

  The transmission according to the present invention includes a case (5), an input shaft (10) and an output shaft (12) installed in parallel in the case (5), an input shaft (10), and an output shaft (12). ) And a gear train (55) comprising a plurality of gears (40 to 45, 46 to 51), and a gear of the differential device (62) meshing with the gear (60) on the output shaft (12) (61) and a rotating element in the case (5) installed in the case (5) and including the gear (17) on the output shaft (12) and the gear (61) of the differential (62). An oil gutter plate (70) for guiding the raised oil to a supply destination to be lubricated, and the oil gutter plate (70) according to the present invention Any of the above oil gutter plates (70), The gear (17) on the output shaft (12) that scoops up the oil toward the second oil catching portion (83) of 0) is engaged with the gear (61) of the differential device (62). It is a gear having a larger diameter than the other gear (60) above.

  According to the transmission according to the present invention, the oil gutter plate according to the present invention is installed in the case, and the large diameter gear on the output shaft is used to scoop up the oil toward the second oil capturing portion. Thus, the oil in the case can be efficiently scraped up by the large-diameter gear. In particular, even when a small amount of oil has accumulated at the bottom of the case, the tooth surface of the large-diameter gear can easily reach the oil surface, so that the oil can be efficiently scraped and captured by the oil gutter plate. become.

  The transmission includes an idle shaft (14) installed in parallel with the input shaft (10) and the output shaft (12), and an idle gear (19) provided on the idle shaft (14). The idle gear (19) is preferably meshed with the gear (17) on the output shaft (12) that scoops up the oil toward the second oil catcher (83).

The transmission (1) may be set so that the output shaft (12) is lower than the input shaft (10) when mounted on the vehicle. According to this configuration, when the outer periphery of the gear on the output shaft reaches a low position in the case, the oil accumulated at the bottom of the case can be efficiently scraped by the gear on the output shaft.
In addition, the code | symbol in said parenthesis shows the code | symbol of the component in embodiment mentioned later as an example of this invention.

  According to the transmission oil gutter plate and the transmission including the same according to the present invention, the oil scraped up by the rotating elements such as the gears can be efficiently captured, and the portion that needs to be lubricated even at a low vehicle speed. An appropriate amount of oil can be supplied.

1 is a longitudinal sectional view of a manual transmission which is an embodiment of a transmission according to the present invention. It is the perspective view which looked at the oil gutter plate in a transmission case from the position above an output shaft. It is the perspective view which looked at the oil gutter plate from the position above the input shaft. It is the top view which looked at the oil gutter plate from the position right above. It is the side view which looked at the oil gutter plate from the edge part side of an axial direction. It is the perspective view which looked at the oil gutter plate from the clutch case side. It is a figure which shows an oil gutter plate, (a) is a perspective view, (b) is a top view. It is a figure for demonstrating the flow of the oil along the inner surface of a transmission case.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a main sectional view of a manual transmission (manual transmission) according to an embodiment of a transmission according to the present invention. A manual transmission (hereinafter referred to as a “transmission”) 1 shown in FIG. 1 is a transmission mounted on a vehicle, and shifts driving force from an engine (not shown) to drive wheels (not shown). )). The transmission 1 is fixed to the case 5 and an input shaft (main shaft) 10 and an output shaft (counter shaft) 12 that are rotatably supported in a transmission case (hereinafter simply referred to as “case”) 5. And a reverse shaft (idle shaft) 14. The input shaft 10, the output shaft 12, and the reverse shaft 14 are arranged in parallel with each other at a predetermined interval. A clutch mechanism 8 housed in the clutch case 7 is provided between the input shaft 10 and the crankshaft 11. Since the clutch mechanism 8 is a known mechanism, a detailed description thereof is omitted here. In the following description, the axial direction indicates the axial direction of the input shaft 10 and the output shaft 12, and the horizontal direction indicates the left-right direction (width direction) with respect to the axial direction. Further, the term “up” or “down” refers to “up” or “down” in a state where the transmission 1 is mounted on a vehicle.

  A first speed drive gear 40 and a second speed drive gear 41 are fixed to the input shaft 10, and a third speed drive gear 42, a fourth speed drive gear 43, a fifth speed drive gear 44 and a sixth speed drive gear 45 are relative to each other. It is supported rotatably. On the other hand, a first-speed driven gear 46 and a second-speed driven gear 47 that mesh with the first-speed drive gear 40 and the second-speed drive gear 41, respectively, are supported on the output shaft 12 so as to be relatively rotatable, and the third-speed drive gears 42, 4 A 3-speed driven gear 48, a 4-speed driven gear 49, a 5-speed driven gear 50, and a 6-speed driven gear 51 that mesh with the high-speed drive gear 43, the 5-speed drive gear 44, and the 6-speed drive gear 45 are fixed. The 1st to 6th drive gears 40 to 45 and the 1st to 6th driven gears 46 to 51 constitute a gear train 55 provided between the input shaft 10 and the output shaft 12.

  In addition, a 1-2 speed synchronizer 52, a 3-4 speed synchronizer 53, and a 5-6 speed synchronizer 54 are provided for switching each transmission gear stage. The 1-2 speed synchronizer 52 is provided between the first speed driven gear 46 and the second speed driven gear 47 on the output shaft 12. The 3-4 speed synchronizer 53 is provided between the 3rd speed drive gear 42 and the 4th speed drive gear 43 on the input shaft 10. The 5-6 speed synchronizer 54 is provided between the 5th speed drive gear 44 and the 6th speed drive gear 45 on the input shaft 10.

  The reverse gear setting mechanism 20 is provided on a reverse output gear (hereinafter referred to as “counter reverse gear”) 17 fixed on the output shaft 12 and on the reverse shaft 14 and is always attached to the first speed drive gear 40. A first idle gear 18 that meshes and a second idle gear 19 that is installed on the reverse shaft 14 and always meshes with the counter reverse gear 17 are provided. Further, the reverse gear setting mechanism 20 includes a synchronization device 30 for establishing the reverse gear disposed between the first idle gear 18 and the second idle gear 19 on the reverse shaft 14.

  The power of the input shaft 10 is transmitted to the output shaft 12 through the selected transmission gear stage by the operation of each of the synchronizers (synchromesh mechanisms) 52, 53, and 54. Then, after being decelerated by a final reduction mechanism composed of a final drive gear 60 and a final driven gear 61, it is transmitted to the differential device 62. Thereby, the drive shafts 63 and 64 connected to the left and right axles rotate in the forward direction.

  Further, when the reverse gear is set, the first idle gear 18 and the second idle gear 19 on the reverse shaft 14 are synchronously coupled by the synchronizing device 30 for establishing the reverse gear. As a result, the power of the input shaft 10 is transmitted to the reverse shaft 14 via the first-speed drive gear 40 and the first idle gear 18, and further transmitted to the output shaft 12 via the second idle gear 19 and the counter reverse gear 17. Is done. As a result, the output shaft 12 rotates in the opposite direction to that when the forward gear is set. Therefore, the drive shafts 63 and 64 are rotated in the reverse direction by the driving force transmitted from the output shaft 12 to the differential device 62.

  Next, the oil gutter plate 70 installed in the case 5 will be described in detail. 2 to 6 are views showing the oil gutter plate 70 in the case 5, FIG. 2 is a perspective view of the oil gutter plate 70 as viewed from the upper position on the output shaft 12, and FIG. 3 is an oil gutter plate. FIG. 4 is a plan view of the oil gutter plate 70 viewed from directly above, and FIG. 5 is an axial end portion of the oil gutter plate 70 (clutch). FIG. 6 is a perspective view of the oil gutter plate 70 in the transmission case 5 viewed from the clutch case 7 side. FIG. 7 is a diagram showing a detailed configuration of the oil gutter plate 70, in which FIG. 7 (a) is a perspective view and FIG. 7 (b) is a plan view. In FIG. 2, the transmission case 5 and the clutch case 7 of the transmission 1 are schematically illustrated by dotted lines. In FIGS. 3 and 5, the transmission case 5 is removed from the mating surface with the clutch case 7. In FIG. 4, only some of the components in the transmission case 5 are illustrated.

  As shown in each figure, the oil gutter plate 70 is a bowl-shaped member made of an integrally molded product made of a synthetic resin, and is contained in the case 5 scraped up by the rotation of the final driven gear 61 and the counter reverse gear 17. This is a member for temporarily storing oil and supplying it to a lubrication target such as the gear train 55 on the input shaft 10 and the output shaft 12 and the synchronization devices 52 to 54. As shown in FIGS. 5 and 6, the oil gutter plate 70 is a space defined between the output shaft 12 and the inner surface 5 a of the case 5 (hereinafter, this space is referred to as a “ceiling portion”). ) 6.

  The oil gutter plate 70 is connected along the axial direction of the input shaft 10 and the output shaft 12 from the introduction end 71 to the first oil catching portion 81 that catches the oil scraped up by the rotation of the final driven gear 61. A first oil passage 72 that extends and a lead-out end 73 provided at an end portion on the downstream side of the first oil passage 72 are provided. The first oil passage 72 is constituted by a bottom surface 72a extending in a belt shape from the introduction end 71 to the lead-out end 73, and side walls 72b, 72c, 72d erected on both sides in the longitudinal direction of the bottom surface 72a. The bottom surface 72 a is configured such that its height position gradually decreases by passing through a plurality of steps and inclinations from the introduction end 71 toward the lead-out end 73. As a result, the first oil passage 72 allows the oil to naturally flow down from the inlet end 71 toward the outlet end 73 by gravity.

  In addition, the oil gutter plate 70 captures the oil collected by the rotation of the counter reverse gear 17 on the output shaft 12 and the oil captured by the second oil capturing unit 83. A second oil passage 75 is provided for guiding to the junction 76 with the first oil passage 72. The second oil catching portion 83 and the second oil passage 75 are disposed adjacent to the first oil catching portion 81 and the first oil passage 72 in the lateral direction with respect to the axial direction. A flat partition wall 82 extending in the axial direction is provided between the first oil catcher 81 and the first oil passage 72 and the second oil catcher 83 and the second oil passage 75. . The height of the partition wall 82 is set to be higher than that of the side wall 72 b of the other part of the first oil catching portion 81 and the first oil passage 72.

  The introduction end 71 opens laterally with respect to the longitudinal direction of the first oil passage 72, and is disposed above the tooth surface 61 a of the final driven gear 61 so as to face the rotation direction (circumferential direction). The partition wall 82 is erected at a position behind the introduction end 71 and the first oil catcher 81 in the rotational direction of the final driven gear 61.

  As shown in FIG. 3 and the like, a rib-like rib 74 having a height lower than that of the partition wall 82 is formed on the outer side of the partition wall 82 with respect to the first oil passage 72. The second oil catching portion 83 and the second oil passage 75 are defined between the bowl-shaped rib 74 and the partition wall 82. The second oil passage 75 extends in parallel with the first oil passage 72 outside the partition wall 82 (on the side opposite to the first oil passage 72). As shown in FIG. 7B, the width dimension (width dimension in plan view) of the second oil catching portion 83 and the second oil passage 75 is larger than the width dimension of the first oil catching portion 81 and the first oil passage 72. Is also a small dimension.

  A discharge port (oil discharge portion) 77 for discharging and dropping the oil flowing through the first oil passage 72 is formed in the side wall 72c between the joining portion 76 and the outlet end 73 in the first oil passage 72. Yes. A plurality of discharge ports 77 (four in the figure) are provided at appropriate intervals along the longitudinal direction of the first oil passage 72. Each discharge port 77 is a small hole that penetrates the side wall 72 c and opens at a position directly above the input shaft 10 and the output shaft 12. The oil discharged and dropped from the discharge ports 77 is applied to rotating elements such as the gears 40 to 45 and 46 to 51 of the gear train 55 provided between the input shaft 10 and the output shaft 12 and the synchronization devices 52 to 54. Supplied.

  Further, a rectifying rib 78 is formed on the bottom surface 72 a of the first oil passage 72 on the downstream side of the joining portion 76. The rectifying rib 78 is installed on the near side of a junction 79 with a third oil catcher 85 described later, and is arranged from one side wall (a side wall opposite to the side wall 72c provided with the discharge port 77) 72d. One oil passage 72 is formed so as to project laterally toward the center. The rectifying rib 78 guides the oil flowing through the first oil passage 72 on the downstream side of the joining portion 76 toward the discharge port 77.

  The lead-out end 73 of the first oil passage 72 branches into two hands, a first lead-out port 73a and a second lead-out port 73b, with the flow dividing wall 73c interposed therebetween. The first outlet 73 a is located on an extension line in the longitudinal direction of the first oil passage 72 and is disposed corresponding to the end of the output shaft 12. On the other hand, the second outlet 73 b is arranged in the lateral direction with respect to the longitudinal direction of the first oil passage 72, and the tip thereof opens toward the end of the input shaft 10.

  In addition, the oil gutter plate 70 is formed with a third oil catching portion 85 configured to guide the oil scraped up by the final driven gear 61 and transmitted through the inner surface 5a of the case 5. The third oil catching portion 85 is provided at a position opposite to the second oil passage 75 with the first oil passage 72 interposed therebetween, and a side wall 72d with respect to the vicinity of the middle portion of the first oil passage 72 in the longitudinal direction. It is partitioned. The bottom surface 85 a of the third oil catching portion 85 is disposed at a position slightly higher than the bottom surface 72 a of the first oil passage 72. A joining portion 79 that joins the third oil catching portion 85 to the first oil passage 72 is provided at a position corresponding to the downstream end of the side wall 72d. The joining portion 79 is provided by cutting out a part of the side wall 72d at a position downstream of the rectifying rib 78.

  As shown in FIG. 6, the oil gutter plate 70 has a small protrusion 70 a for locking provided on the side of the introduction end 71 and a small hole 5 f for locking provided on the inner surface 5 a of the case 5. By being stopped, it is attached to the inner surface 5 a of the ceiling portion 6 in the case 5. In this state, the oil gutter plate 70 is installed between the output shaft 12 and the inner surface 5a of the case 5. As shown in FIG. 2 and the like, the introduction end 71 of the oil gutter plate 70 is disposed above the tooth surface 61a of the final driven gear 61, and the second oil catching portion 83 is located above the counter reverse gear 17 on the output shaft 12. Placed in. The first lead-out end 73 is arranged such that the tip thereof introduces oil into the shaft from the end of the output shaft 12 via an oil passage groove (not shown) formed on the inner surface of the transmission case 5. ing. On the other hand, the second lead-out end 73 is arranged so as to supply oil into the shaft from the end of the input shaft 10 through the oil passage groove. Further, the partition wall 82 of the oil gutter plate 70 and the upper end sides of the side walls 72b, 72c, 72d are opposed to the inner surface 5a of the ceiling portion 6 of the case 5 with a slight gap. . 3 and 4 is a 1-2 speed shift fork shaft for a 1-2 speed synchronizer, and 58 is a 1-2 speed shift fork.

  Next, the flow of oil by the oil gutter plate 70 configured as described above will be described. The final driven gear 61 that rotates in the case 5 scoops up oil accumulated at the bottom of the case 5. The oil scooped up by the final driven gear 61 is introduced from the introduction end 71 of the oil gutter plate 70 and is captured by the first oil capturing portion 81. At this time, a part of the oil scooped up by the final driven gear 61 is received by the partition wall 82 and collected in the first oil catcher 81. The oil trapped by the first oil trapping portion 81 flows down along the first oil passage 72 by gravity.

  On the other hand, the counter reverse gear 17 that rotates in the case 5 also scoops up the oil accumulated at the bottom of the case 5. The oil scraped up by the counter reverse gear 17 is received by the outer surface of the partition wall 82 and collected in the second oil catching portion 83. The oil captured by the second oil capturing part 83 flows down along the second oil passage 75 by gravity.

  The oil in the second oil passage 75 joins the oil in the first oil passage 72 at the junction 76. The joined oil further flows down through the first oil passage 72. The oil is provided between the input shaft 10 and the output shaft 12 by flowing to the discharge port 77 side of the side wall 72c by being bent by a rectifying rib 78, and discharged from the discharge port 77 and dropped. The gear train 55 and the synchronizing devices 52 to 54 are lubricated.

  Further, the oil captured by the third oil capturing part 85 joins with the oil in the first oil passage 72 at the joining part 79. FIG. 8 is a view showing a cross section of the inner surface 5a of the ceiling portion 6 of the case 5 and the oil gutter plate 70. FIG. 8 (a) is a side cross-sectional view of the position corresponding to the arrow XX in FIG. Fig. (B) is a perspective view of a partially cut state corresponding to the arrow view. The flow of oil collected in the third oil catcher 85 will be described with reference to FIG. The oil scooped up by the rotation of the final driven gear 61 is captured by the first oil capturing portion 81 of the oil gutter plate 70 and flows along the inner surface 5a of the ceiling portion 6 of the case 5 as shown in FIG. . The oil that has flowed along the inner surface 5 a of the ceiling portion 6 is dropped and collected in the third oil capturing portion 85. In the oil gutter plate 70, the third oil catching portion 85 that catches the oil dropped from the inner surface 5a of the ceiling portion 6 is provided on the side of the first oil passage 72, so that more oil can be efficiently captured. Making it possible.

  Of the oil flowing through the first oil passage 72, the remaining oil that has not been discharged from the discharge port 77 and the oil that has been captured by the third oil capturing portion 85 and that has flowed into the first oil passage 72 at the confluence portion 79 are One oil passage 72 further flows down and reaches the outlet end 73. The oil is divided into two flows at the outlet end 73 by the flow dividing wall 73c, the flow to the first outlet 73a and the flow to the second outlet 73b. The oil derived from the first outlet 73a is supplied into the shaft from the end of the output shaft 12. Further, the oil derived from the second outlet 73 b is supplied into the shaft from the end of the input shaft 10.

  As described above, according to the oil gutter plate 70 provided in the transmission 1 of the present embodiment, in addition to the first oil catching portion 81 that catches the oil scooped up by the rotation of the final driven gear 61, the counter reverse gear By providing the second oil catching portion 83 for catching the oil scooped up by the rotation of 17, not only the oil scooped up by the final driven gear 61 but also in the case 5 in the region of higher rotation than the final driven gear 61. It is also possible to capture the oil scooped up by the counter reverse gear 17 that scoops up the oil. Therefore, the amount of oil captured by the oil gutter plate 70 can be increased.

  In particular, when the vehicle equipped with the transmission 1 travels at a low speed, the rotational speed of the final driven gear 61 decreases, so that the oil required to lubricate each part of the transmission 1 with only the oil driven up by the final driven gear 61. Even in this case, the counter reverse gear 17 on the output shaft 12 rotating at a higher speed than the final driven gear 61 captures the oil scooped up, so that the lubrication is necessary. An appropriate amount of oil can be effectively supplemented.

  Further, in the oil gutter plate 70 of the present embodiment, a partition wall 82 is provided between the first oil catching portion 81 and the first oil passage 72 and the second oil catching portion 83 and the second oil passage 75, and this partition wall. The height dimension of 82 is set to a dimension higher than the side wall 72b of the other part in the 1st oil capture | acquisition part 81 and the 1st oil path 72. FIG. Thereby, the oil scooped up by the final driven gear 61 and the counter reverse gear 17 can be efficiently received by the partition wall 82 and captured by the first oil capturing unit 81 and the second oil capturing unit 83. Therefore, the amount of oil captured by the oil gutter plate 70 can be increased. That is, if the height dimension of the partition wall 82 is set to be equal to or lower than the first oil catching portion 81 and the other side wall 72b of the first oil passage 72, the final driven gear 61 or the counter reverse gear 17 Of the oil that has been scooped up, the oil that has jumped to a high position cannot be received by the partition wall 82, and the oil will jump over the first oil catching portion 81 or the second oil catching portion 83 and fall to the opposite side. . Therefore, the amount of oil captured by the oil gutter plate 70 cannot be increased.

  Further, in the oil gutter plate 70 of the present embodiment, the second oil for capturing the oil scooped up by the counter reverse gear 17 by additionally forming the bowl-shaped rib 74 on the outside of the partition wall 82. A capturing unit 83 is provided. This makes it possible to increase the amount of oil captured by the oil gutter plate 70 without complicating the shape of the oil gutter plate 70 and increasing the size thereof.

  Further, by providing the junction 76 of the second oil passage 75 and the first oil passage 72 on the upstream side of the discharge port 77, the flow rate of the oil flowing through the position of the discharge port 77 can be increased. Therefore, it is possible to effectively prevent the oil supplied to the gear train 55 and the synchronization devices 52 to 54 provided between the input shaft 10 and the output shaft 12 from being insufficient.

  Further, a rectifying rib 78 for guiding the oil flowing through the first oil passage 72 to the discharge port 77 side is formed on the bottom surface 72a of the first oil passage 72 on the downstream side of the joining portion 76. By providing such a rectifying rib 78, it is possible to ensure the flow rate of the oil discharged from the discharge port 77. Therefore, lubrication of the gear train 55 provided between the input shaft 10 and the output shaft 12 can be effectively performed.

  In addition, at a position opposite to the second oil passage 75 across the first oil passage 72, a part of the oil scraped up by the final driven gear 61 forms an inner surface 5 a of the case 5 (an inner surface 5 a of the ceiling portion 6). A third oil catching portion 85 configured to be guided is provided. The third oil catching portion 85 can effectively catch the oil that is scraped up by the final driven gear 61 and hits the inner surface 5 a of the ceiling portion 6 of the case 5. Therefore, the amount of oil captured by the oil gutter plate 70 can be further increased.

  In the transmission 1 of the present embodiment, the counter reverse gear 17 on the output shaft 12 that scoops up the oil toward the second oil catching portion 83 of the oil gutter plate 70 is on the output shaft 12 that meshes with the final driven gear 61. This is a gear having a diameter larger than that of the final drive gear 60. Furthermore, the counter reverse gear 17 is the largest diameter gear among the gears on the output shaft 12. As described above, the counter reverse gear 17, which is a large-diameter gear on the output shaft 12, is configured to scoop up the oil toward the second oil catching portion 83, so that the oil in the case 5 is efficiently scraped. It is possible to raise. This is because even when a small amount of oil has accumulated in the bottom of the case 5, the large-diameter counter reverse gear 17 can easily reach the oil level of the oil so This is because it can be captured by the plate 70.

  Further, as shown in FIG. 5 and the like, the transmission 1 of the present embodiment is set so that the height position of the output shaft 12 is lower than the height position of the input shaft 10 when mounted on the vehicle. Has been. As a result, since the outer periphery of the counter reverse gear 17 on the output shaft 12 has reached a low position in the case 5, the oil accumulated at the bottom of the case 5 can be scraped more efficiently by the counter reverse gear 17. Is possible.

  Although not shown in the figure, the counter reverse gear 17 has a smaller inclination of its teeth (dentition) than the first-speed driven gear 46 on the adjacent output shaft 12. Therefore, the oil scooped up by the rotation of the counter reverse gear 17 tends to fly relatively straight with respect to the rotation direction of the counter reverse gear 17. On the other hand, in the oil gutter plate 70 of this embodiment, as shown in FIG. 4 and the like, the second oil catching portion 83 and the partition wall 82 are arranged on the extension line in the rotation direction of the counter reverse gear 17 and in the vicinity thereof. As a result, the oil scraped up by the counter reverse gear 17 can be reliably applied to the partition wall 82 and collected in the second oil catching portion 83.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in the above-described embodiment, the case where the gear that scoops up the oil toward the second oil catching portion 83 of the oil gutter plate 70 is the counter reverse gear 17 on the output shaft 12 has been described. The gutter plate may be configured to capture oil scooped up by other gears provided on the output shaft of the transmission.

  Moreover, in the said embodiment, although the manual transmission was shown as a transmission which installed the oil gutter plate concerning this invention, the transmission which installs the oil gutter plate concerning this invention was installed in parallel in the case. As long as the transmission includes an input shaft and an output shaft, a gear train provided between the input shaft and the output shaft, and a differential gear to which the rotation of the output shaft is transmitted, besides the manual transmission For example, the present invention can be applied to other types of transmissions such as a dual clutch transmission.

1 Transmission 5 Case (Transmission case)
5a Inner surface 6 Ceiling 10 Input shaft (main shaft)
12 Output shaft (counter shaft)
14 Reverse axis (idle axis)
16 Reverse input gear 17 Reverse output gear (counter reverse gear)
20 Reverse gear setting mechanism 40-45 1-6 speed drive gear 46-51 1-6 speed driven gear 52 1-2 speed synchronizer 53 3-4 speed synchronizer 54 5-6 speed synchronizer 55 Gear train 60 Final drive gear 61 Final driven gear (differential gear)
62 Differential equipment (differential equipment)
70 oil gutter plate 70a small protrusion 71 introduction end 72 first oil passage 72a bottom surface 72b, 72c, 72d side wall 73 lead-out end 74 bowl-shaped rib 75 second oil passage 76 confluence portion 77 discharge port (oil discharge portion)
78 Rib for rectification 79 Junction part 81 1st oil capture part 82 Partition wall 83 2nd oil capture part 85 3rd oil capture part

Claims (8)

Case and
An input shaft and an output shaft installed in parallel in the case;
A gear train composed of a plurality of gears provided between the input shaft and the output shaft;
In a transmission comprising a differential gear to which rotation of the output shaft is transmitted,
An oil gutter plate installed in the case for guiding oil scraped up by a rotating element in the case including a gear on the output shaft and a gear of the differential gear to a supply destination to be lubricated Because
A first oil catching unit that catches the oil scraped up by the rotation of the gear of the differential;
A first oil passage extending along an axial direction of the input shaft and the output shaft from the first oil catcher to a lead-out end from which the oil is led out;
A second oil catching portion disposed adjacent to the first oil catching portion and the first oil passage, and catching up the oil scraped up by rotation of a gear on the output shaft;
A second oil passage for causing the oil captured by the second oil capturing portion to merge with the first oil passage;
A partition wall provided between the first oil catcher and the first oil passage and between the second oil catcher and the second oil passage and extending in the axial direction;
An oil gutter plate for a transmission, wherein a height of the partition wall is set to be higher than that of a side wall of another portion of the first oil catcher and the first oil passage. On the opposite side of the partition wall from the first oil passage, a bowl-shaped rib having a height lower than that of the partition wall is formed,
2. The oil gutter plate for a transmission according to claim 1, wherein the second oil capturing part and the second oil passage are defined between the rib-shaped rib and the partition wall. At a position corresponding to the downstream end of the partition wall, a merging portion for joining the second oil passage to the first oil passage is provided,
The side wall of the first oil passage between the merging portion and the lead-out end includes the gear train that is provided between the input shaft and the output shaft by discharging oil from the first oil passage. 2. An oil gutter plate for a transmission according to claim 1, further comprising an oil discharge portion that supplies the element. A rectifying rib for guiding the oil flowing through the first oil passage to the oil discharge portion side is formed on the bottom surface of the first oil passage on the downstream side of the joining portion. The oil gutter plate of the transmission according to claim 3. A part of the oil scraped up by the gear of the differential gear is guided along the inner surface of the case to a position opposite to the second oil passage across the first oil passage. The oil gutter plate for a transmission according to any one of claims 1 to 4, wherein a third oil catching portion is formed. Case and
An input shaft and an output shaft installed in parallel in the case;
A gear train composed of a plurality of gears provided between the input shaft and the output shaft;
A gear of a differential gear to which rotation of the output shaft is transmitted;
An oil gutter plate installed in the case for guiding oil scraped up by a rotating element in the case including a gear on the output shaft and a gear of the differential gear to a supply destination to be lubricated A transmission comprising
The oil gutter plate is the oil gutter plate according to any one of claims 1 to 5,
The gear on the output shaft that scoops up the oil toward the second oil catching portion of the oil gutter plate is a gear having a larger diameter than other gears on the output shaft that mesh with the gear of the differential device. A transmission characterized by being. An idle shaft installed parallel to the input shaft and the output shaft;
An idle gear provided on the idle shaft,
The transmission according to claim 6, wherein the idle gear meshes with a gear on the output shaft that scoops up oil toward the second oil catching portion. The transmission according to claim 6 or 7, wherein the output shaft is set to a position lower than the input shaft in a state where the transmission is mounted on a vehicle.

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