JP6069164B2 - transmission - Google Patents

Description

  The present invention relates to a transmission including a main chamber that houses a speed change mechanism and a sub chamber in which hydraulic oil is disposed below the main chamber, and more specifically, hydraulic fluid that flows down from the main chamber to the sub chamber. The present invention relates to a transmission having a structure for rectifying.

  2. Description of the Related Art A transmission such as an automatic transmission mounted on a vehicle houses components such as a gear and a rotating shaft that constitute a transmission mechanism in a casing. And as a chamber defined in the casing, a machine room (main room) that houses the components of the transmission mechanism (rotary shaft, gears, pulleys, etc.) and a lower side of the machine room (automatic transmission mounted on the vehicle) And an oil pan chamber (sub chamber) in which hydraulic oil is stored. Further, in such a transmission, a hydraulic control device (hydraulic control body) provided with a valve mechanism for controlling the hydraulic pressure of hydraulic oil supplied to the transmission mechanism in the oil pan chamber, and a lower side of the hydraulic control device Some contain oil strainers in place.

  In the transmission as described above, in order to lubricate and cool the rotating mechanical parts such as the clutch and belt among the components of the transmission mechanism, the hydraulic oil accumulated in the oil pan chamber is passed through the oil strainer and the hydraulic control device. It is transported by pipes and sprayed on machine parts in the machine room. The sprayed hydraulic oil is returned to the oil pan chamber through a return hole (communication hole) formed in a partition wall that partitions the machine chamber and the oil pan chamber.

  By the way, when the hydraulic oil is returned to the oil pan chamber from the return hole formed in the partition wall, the hydraulic oil flows down to the upper surface of the hydraulic control device in the oil pan chamber. At this time, when there is no structural part on the upper surface of the hydraulic control body, the hydraulic oil freely flows on the upper surface of the hydraulic control device, so that the hydraulic oil diffuses over a wide area. Therefore, the return efficiency of the working oil to the oil strainer suction port is deteriorated. As a result, there is a problem that the amount of hydraulic oil required in the transmission increases.

  In addition, there exists an oil reservoir structure shown in patent document 1 as a structure for guide | inducing the hydraulic fluid in cases, such as a transmission, efficiently. In the oil reservoir structure of the internal combustion engine for a vehicle in which the bottom surface other than the recess for storing the oil strainer is formed higher than the bottom surface of the recess, the oil reservoir structure has a fin that faces the recess on a high bottom surface that extends to the side of the recess. Is forming. As a result, the oil on the bottom surface is positively returned to the recess when the engine fluctuates during braking or acceleration of the vehicle.

  However, the structure described in Patent Document 1 is such that fins having a rectifying effect are attached to the bottom surface of a chamber (oil pan chamber) in which an oil strainer is disposed. Therefore, although there is an effect of rectifying the hydraulic oil after falling to the bottom surface of the room, the hydraulic oil before dropping to the bottom surface of the room is not rectified. For this reason, it is not possible to rectify the hydraulic oil that has flowed down to the upper surface of the hydraulic control device installed in the oil pan chamber, which is the subject of the present application.

Japanese Patent Laid-Open No. 9-256830

  The present invention has been made in view of the above points, and an object of the present invention is to provide a transmission having a structure in which a hydraulic control device and an oil strainer are arranged above and below a sub-chamber in which hydraulic oil is accumulated. It is an object of the present invention to provide a transmission capable of efficiently guiding the flowing hydraulic oil toward an intake port of an oil strainer.

The present invention for solving the above-described problems is a transmission (1) mounted on a vehicle, in which a main chamber (30) that houses a transmission mechanism (10) and the transmission (1) are mounted on the vehicle. The sub chamber (40) provided under the main chamber (30) in the vertical direction in the vertical direction, the partition wall (21) separating the main chamber (30) and the sub chamber (40), 21) and a communication hole (71) for allowing hydraulic oil to flow from the main chamber (30) to the sub chamber (40) and disposed below the partition wall (21) in the sub chamber (40). The hydraulic control device (50), the strainer (60) disposed below the hydraulic control device (50) in the sub chamber (40), and the working oil provided on the lower surface (60b) of the strainer (60) are sucked. And a suction hole (61) that corresponds to the communication hole (71) in the upper surface (50a) of the hydraulic control device (50). Position (M1) with the intervening guide member between the other position (80) attached that, the guide member (80) extends towards the partition wall (21) from the upper surface of the hydraulic control device (50) (50a) The both end portions (81a, 81a) have a vertical wall (81) extending toward the outer peripheral edge (51b) of the upper surface (50a) of the hydraulic control device (50) .

According to the present invention, in a transmission having a structure in which a hydraulic control device and an oil strainer are arranged above and below a sub chamber in which hydraulic oil is accumulated, between a position corresponding to the communication hole on the upper surface of the hydraulic control device and another position. And extending from the upper surface (50a) of the hydraulic control device (50) toward the partition wall (21), and both end portions (81a, 81a) of the hydraulic control device (50) are outer peripheral edges (51b) of the upper surface (50a) of the hydraulic control device (50). By attaching the guide member having the vertical wall (81) extending toward the upper surface of the hydraulic control device, the hydraulic oil that has dropped from the communication hole of the partition wall to the upper surface of the hydraulic control device is efficiently guided toward the suction port of the strainer. It is possible to rectify so as to be. Therefore, the required amount of hydraulic oil can be efficiently guided to the suction port provided on the lower surface of the strainer disposed below the hydraulic control device. As a result, the hydraulic oil returning from the main chamber to the sub chamber can be efficiently sucked into the oil strainer, so that the amount of hydraulic oil in the transmission can be reduced, and the transmission can be reduced in size and weight. be able to.

In the above transmission, a plurality of communication holes (71 to 73) provided in the partition wall (21) are provided, and the guide member (80) corresponds to the one communication hole (71). The vertical wall (81) is provided with a position (M1) corresponding to the center of one communication hole (71) on the upper surface (50a) of the hydraulic control device (50) and the other communication holes (72, 73). It is good to arrange | position so that the straight line (L1, L2) which ties to the position (M2, M3) corresponding to the center of may be interrupted | blocked.

  According to this configuration, the vertical wall of the guide member is disposed so as to block a straight line connecting the center of one communication hole and the center of the other communication hole, so that the hydraulic oil dropped from the one communication hole. And hydraulic fluid that has dropped from other communication holes can be avoided. Therefore, it is possible to avoid the occurrence of aeration (mixing of air) in the hydraulic oil that has fallen from the communication hole to the upper surface of the hydraulic control device, and effectively avoid the retention of the hydraulic oil on the upper surface of the hydraulic control device. It becomes possible.

  Further, in the above transmission, the vertical wall (81) of the guide member (80) is at least approximately half around the position (M1) corresponding to the communication hole (71) in the upper surface (50a) of the hydraulic control device (50). You may form in the curved surface shape which surrounds. According to this configuration, the hydraulic oil dropped on the upper surface of the hydraulic control device can be rectified more effectively, and a necessary amount of hydraulic oil can be more efficiently guided to the strainer inlet.

  In the above transmission, a plate-like member (51) for forming an oil passage (56) in the hydraulic control device (50) is attached to the upper surface (50a) of the hydraulic control device (50). The guide member (80) is fixed to the upper surface (51a) of the plate-like member (51) by fastening bolts (55) for attaching the plate-like member (51) to the hydraulic control device (50). It is good to be.

  According to this structure, attachment of a plate-shaped member and attachment of a guide member can be performed in one process by fastening of a bolt. Therefore, the guide member can be easily attached, and the number of parts of the transmission can be reduced and the structure can be simplified.

In this case, the hydraulic control device (50) may be fixed to the casing (20) forming the sub chamber (40) with the plate-like member (51) interposed therebetween. According to this configuration, since the plate-like member and the guide member attached thereto are supported by fixing the hydraulic control device to the casing, a more stable attachment state of the plate-like member and the guide member can be ensured.
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 of the present invention, in the transmission having a structure in which the hydraulic control device and the oil strainer are arranged above and below the sub chamber in which the hydraulic oil is accumulated, the hydraulic oil that has flowed down to the upper surface of the hydraulic control device Can be guided efficiently toward. As a result, the amount of hydraulic oil in the transmission can be reduced, and the transmission can be reduced in size and weight.

1 is a schematic side sectional view showing an automatic transmission according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of an automatic transmission, and is a figure corresponding to A arrow of FIG. It is a longitudinal cross-sectional view of an automatic transmission, and is a figure corresponding to B arrow of FIG. It is a longitudinal cross-sectional view of an automatic transmission, and is a figure corresponding to C arrow of FIG. It is a sectional side view corresponding to the DD part of FIG. It is a sectional side view corresponding to the EE part of FIG. It is a figure which shows the oil guide plate attached to the upper surface of a hydraulic control body. It is a figure which shows the automatic transmission concerning 2nd Embodiment of this invention, and is a figure which shows the oil guide plate attached to the upper surface of a hydraulic control body.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[First Embodiment]
FIG. 1 is a schematic sectional side view showing an automatic transmission (transmission) according to a first embodiment of the present invention. 2 to 4 are longitudinal sectional views of the automatic transmission, and are views corresponding to views A, B, and C, respectively, in FIG. 5 and 6 are side sectional views corresponding to the DD and EE portions of FIG. 3, respectively. The automatic transmission 1 shown in these drawings is an automatic transmission mounted on a vehicle, and is rotatable around a plurality of rotating shafts 2 and 3 arranged in parallel to each other and the rotating shafts 2 and 3. A transmission mechanism 10 provided with rotational parts such as installed pulleys 4 and gears 5 and parts for speed change such as a clutch (not shown), and a casing (transmission case) containing components of the automatic transmission 1 including the speed change mechanism 10 20.

  Inside the casing 20 is a machine chamber (main chamber) 30 in which the speed change mechanism 10 is accommodated, and an oil pan chamber 40 (secondary chamber) in which hydraulic oil is formed at the bottom of the casing 20 and near the bottom of the machine chamber 30. The room is divided into two rooms. A lower cover 11 is attached to the lower surface side of the oil pan chamber 40. The lower cover 11 is attached so as to cover the lower surface side of the casing 20 by fixing a plurality of locations such as the outer periphery thereof by fastening bolts 11a. The automatic transmission 1 is mounted on a vehicle in an arrangement as shown in FIG. Therefore, in a state where the automatic transmission 1 is mounted on the vehicle, the machine room 30 is arranged on the upper side (vertical upper side), and the oil pan room 40 is arranged on the lower side. In addition, when showing up and down in the following description, it shall point out up and down in the state shown in FIG.

  A hydraulic control body (hydraulic control device) 50 is installed in the oil pan chamber 40. The hydraulic control body 50 includes a mechanism such as a hydraulic control valve 54 for controlling the hydraulic pressure supplied to the speed change mechanism 10 and is supplied with oil discharged from an oil pump (not shown). Yes. An oil strainer (strainer) 60 is installed below the hydraulic control body 50 in the oil pan chamber 40. The oil strainer 60 is provided with a suction port 61 on its lower surface 60b. The suction port 61 sucks hydraulic oil accumulated in the bottom 41 of the oil pan chamber 40 into the oil strainer 60. The position of the suction port 61 in the oil strainer 60 is arranged at an optimum position in consideration of front-rear and left-right accelerations when the vehicle is traveling. Here, as shown in FIG. 4, the suction port 61 is provided at a position along one end side of the bottom surface 60 b of the oil strainer 60 formed in a substantially square shape.

  The machine chamber 30 and the oil pan chamber 40 are partitioned by a partition wall 21 of the casing 20. The partition wall 21 is a plate-like portion extending in the horizontal direction so as to partition the vertical direction between the machine chamber 30 and the oil pan chamber 40. As shown in FIG. 2, the communication wall 21 is formed with three communication holes (communication oil holes) including a first communication hole 71, a second communication hole 72, and a third communication hole 73. The machine chamber 30 in which the transmission mechanism 10 is accommodated in the casing 20 and the oil pan chamber 40 in which the hydraulic control body 50 and the oil strainer 60 are accommodated communicate with each other through the communication holes 71 to 73. Accordingly, the hydraulic oil is discharged from the machine chamber 30 to the oil pan chamber 40 through the communication holes 71 to 73. The upper surface 50 a of the hydraulic control body 50 is disposed below (directly below) the communication holes 71 to 73 in the oil pan chamber 40.

  In the automatic transmission 1 having the above-described configuration, the hydraulic oil (return oil) that has been introduced into the machine room 30 and lubricated the transmission mechanism 10 such as the pulley 4 and the gear 5 passes through the communication holes 71 to 73 of the partition wall 21. And flows down into the oil pan chamber 40. The hydraulic oil falls on the upper surface 50a of the hydraulic control body 50 in the oil pan chamber 40, and flows down from the outer peripheral edge of the upper surface 50a. Thereafter, it collects at the bottom 41 of the oil pan chamber 40 and is sucked into the suction port 61 of the oil strainer 60.

  The hydraulic control body 50 includes a main body portion (control body) 52 having an oil passage groove formed therein, and a thin plate-like separate plate (plate-like plate) attached to the upper surface (oil passage forming surface) of the main body portion 52. Member) 51. As shown in FIG. 3, the separate plate 51 is attached to the main body 52 by fastening a plurality of bolts 55 provided along the outer periphery of the main body 52. An oil passage 56 (see FIG. 1) through which hydraulic oil flows is formed inside the hydraulic control body 50 by the oil passage groove in the main body 52 and the separate plate 51.

  An oil guide plate (guide member) 80 is attached to the upper surface 51 a of the separate plate 51. FIG. 7 is a view showing an oil guide plate. In the drawing, the positions of the first to third communication holes 71 to 73 with respect to the oil guide plate 80 viewed from above the hydraulic control body 50 are indicated by bold lines, and the positions of the oil strainer 60 and the suction port 61 are indicated by alternate long and short dashed lines. It is written together. Moreover, the line S which shows the flow of the hydraulic oil which fell from the 1st communicating hole 71 is shown with the dotted line.

  As shown in FIG. 7, the oil guide plate 80 is attached in the vicinity (periphery) of the position (directly below) corresponding to the first communication hole 71 on the upper surface 51 a of the separate plate 51. It is interposed between the corresponding position and other positions around it. The oil guide plate 80 is an integrally molded product made of synthetic resin, and as shown in FIGS. 6 and 7, a vertical wall 81 extending from the upper surface 51a of the separate plate 51 directly upward (toward the partition wall 21), It has a bottom wall 82 extending horizontally along the upper surface 51a of the separate plate 51, and has a substantially L-shaped cross section. As shown in FIG. 7, the vertical wall 81 has a curved surface shape that surrounds a part of the periphery of the position corresponding to the first communication hole 71, specifically, at least approximately half of the periphery immediately below the first communication hole 71. Is formed. Thereby, as shown by the dotted line S in FIG. 7, the hydraulic oil that has dropped from the first communication hole 71 to the upper surface 51 of the separation plate 51 gathers on the outer peripheral edge 51 b on the side close to the position corresponding to the first communication hole 71, From there, it flows to the lower side of the hydraulic control body 50. As a result, the hydraulic oil can be rectified so as to be efficiently guided toward the suction port 61 of the oil strainer 60.

  In addition, the vertical wall 81 of the oil guide plate 80 is formed in a shape surrounding the second communication hole 72 side and the manual valve drive member 58 side, which will be described later, in the periphery immediately below the first communication hole 71. Has been. As a result, when viewed from above the hydraulic control body 50, on the straight line (virtual straight line) L1 connecting the position M1 corresponding to the center of the first communication hole 71 and the position M2 corresponding to the center of the second communication hole 72. The vertical wall 81 of the oil guide plate 80 is straddling, and the straight line L1 is blocked by the vertical wall 81 of the oil guide plate 80. Similarly, the vertical wall 81 of the oil guide plate 80 is also on a straight line (virtual straight line) L2 connecting the position M1 corresponding to the center of the first communication hole 71 and the position M3 corresponding to the center of the third communication hole 73. , And the straight line L2 is blocked by the vertical wall 81 of the oil guide plate 80. Further, both end portions 81a and 81a of the vertical wall 81 of the oil guide plate 80 do not reach the outer peripheral edge (end side) 51b of the separate plate 51, and extend to a position closer to the front side than the outer peripheral edge 51b. A space is provided between both end portions 81 a and 81 a of the vertical wall 81 and the outer peripheral edge 51 b of the separate plate 51.

  As shown in FIGS. 6 and 7, the oil guide plate 80 is fastened (co-fastened) to the upper surface 51 a of the separate plate 51 with bolts 55 for attaching the separate plate 51 to the main body 52 of the hydraulic control body 50. Is fixed. That is, the bottom wall 82 of the oil guide plate 80 is fixed to the main body 52 of the hydraulic control body 50 with the separate plate 51 interposed therebetween.

  As shown in FIG. 1, the hydraulic control body 50 is fixed to the casing 20 forming the oil pan chamber 40 with a separate plate 51 interposed therebetween. Although not shown, a bolt for fixing the hydraulic control body 50 to the casing 20 is inserted into the hydraulic control body 50 from the lower surface side of the hydraulic control body 50 and protrudes toward the upper surface 50a. It is fastened to the fastening hole.

  Further, as shown in FIGS. 3 and 7, a drive member 58 for driving a manual valve (see FIG. 1) 57 in the hydraulic control body 50 is installed on the upper surface 51 a of the separate plate 51. As shown in FIG. 1, the drive member 58 is connected to a manual valve 57 in the hydraulic control body 50 through a through hole 51 c provided in the separate plate 51. The drive member 58 is formed with a long hole 58a through which a pin (not shown) rotatably connected to the casing 20 is inserted. The drive member 58 moves when the pin inserted in the long hole 58a rotates. Thereby, the manual valve 57 in the hydraulic control body 50 slides along the axial direction.

  By the way, if hydraulic fluid continues to be excessively supplied to the drive member 58 and its surroundings, foreign matter (contamination) such as fine metal powder contained in the hydraulic fluid may cause gaps between the drive member 58 and the pin, the manual valve 57, and the hydraulic control body. By flowing into the gap between the manual valve 57 and the like, a good operation of the manual valve 57 may be hindered. On the other hand, in the automatic transmission 1 according to the present embodiment, the drive member 58 is disposed on the upper surface 51a of the separate plate 51 at a position separating the vertical wall 81 of the oil guide plate 80 from the first communication hole 71. Has been. Accordingly, the hydraulic oil that has flowed down from the first communication hole 71 to the upper surface 51a of the separation plate 51 is prevented from being blocked by the oil guide plate 80 and flowing toward the drive member 58. Accordingly, it is possible to prevent excessive hydraulic oil from being continuously supplied to the drive member 58 and the manual valve 57, and thus it is possible to prevent the above-described adverse effects caused by excessive hydraulic oil supply.

  As shown in FIGS. 3, 5, and 7, the upper surface 51 a of the separation plate 51 at a position corresponding to the third communication hole 73 of the partition wall 21 (a position immediately below) is provided from the inside of the hydraulic control body 50 to the machine chamber 30. A connecting member 59 is provided by connecting a pipe 65 (see FIG. 5) for sending hydraulic oil to the pipe. The connecting member 59 is a member provided with a plurality (three in the figure) of openings 59a for inserting the end (lower end) of the pipe 65, and is fixed to the upper surface 51a of the separate plate 51 by fastening bolts 55. Has been. That is, the connecting member 59 is fastened to the upper surface 51 a of the separate plate 51 with the bolt 55 for fixing the separate plate 51. As shown in FIG. 5, a dam-like enclosure 59 b that is one step higher than the inner portion is formed on the outer peripheral edge of the connecting member 59. The enclosure 59 b is provided except for a portion corresponding to the outer peripheral edge 51 b of the separate plate 51 closest to the connecting member 59 in the outer periphery of the connecting member 59.

  The hydraulic oil that has dropped from the third communication hole 73 of the partition wall 21 flows down to the inside of the enclosure 59 b of the connecting member 59. This hydraulic oil is received by the enclosure 59b and does not flow outward. Accordingly, the hydraulic oil dropped from the third communication hole 73 does not diffuse to the upper surface 51a side of the separate plate 51, and the outer peripheral edge 51b of the separate plate 51 closest to the portion without the surrounding 59b (the outer peripheral edge 51b on the left side in FIG. 7). After that, it starts to flow down.

  As described above, the automatic transmission 1 according to the present embodiment includes a machine chamber (main chamber) 30 that houses the speed change mechanism 10 and an oil pan chamber (secondary chamber) that stores hydraulic oil provided below the machine chamber 30. Chamber) 40, a partition wall 21 that partitions the machine chamber 30 and the oil pan chamber 40, and a communication hole (first communication hole) that is formed in the partition wall 21 and allows hydraulic oil to flow from the machine chamber 30 to the oil pan chamber 40. 71, an oil pressure control body 50 disposed below the partition wall 21 in the oil pan chamber 40, an oil strainer 60 disposed below the oil pressure control body 50 in the oil pan chamber 40, and an oil strainer 60 And a suction port 61 formed in the lower surface 60b. And the oil guide plate 80 interposed between the position corresponding to the 1st communicating hole 71 in the upper surface 50a of the hydraulic control body 50 and another position is attached. The oil guide plate 80 has a function of rectifying the hydraulic oil that has flowed down from the first communication hole 71 to the upper surface 50 a of the hydraulic control body 50.

  According to the automatic transmission 1 of the present embodiment, the oil guide plate 80 as described above is attached to the upper surface 50a of the hydraulic control body 50, so that the upper surface 50a of the hydraulic control body 50 from the first communication hole 71 of the partition wall 21. It is possible to rectify the hydraulic oil that has dropped to the suction port 61 of the oil strainer 60. Therefore, the hydraulic oil can be efficiently guided to the suction port 61 of the oil strainer 60 disposed below the hydraulic control body 50. As a result, the hydraulic oil returning from the machine chamber 30 to the oil pan chamber 40 can be efficiently sucked into the oil strainer 60, so that the amount of hydraulic oil in the automatic transmission 1 can be suppressed to a low level. 1 can be reduced in size and weight.

  Further, in the automatic transmission 1 of the present embodiment, the partition wall 21 is provided with a plurality of communication holes 71 to 73, and the oil guide plate 80 is provided corresponding to the one communication hole 71, The oil guide plate 80 has a vertical wall 81 extending from the upper surface 50a of the hydraulic control body 50 toward the partition wall 21, and the vertical wall 81 is an upper surface 51a of the separate plate 80 (the upper surface 50a of the hydraulic control body 50). Are arranged so as to block the straight lines L1 and L2 connecting the position M1 corresponding to the center of the first communication hole 71 and the positions M2 and M3 corresponding to the centers of the other communication holes 72 and 73.

  With this configuration, it is possible to avoid a mixed flow of the hydraulic oil dropped from the first communication hole 71 and the hydraulic oil dropped from the other communication holes 72 and 73. Therefore, aeration (mixing of air) occurs in the hydraulic oil that has dropped from the communication holes 71 to 73 to the upper surface 50a of the hydraulic control body 50, and the retention of the hydraulic oil on the upper surface 50a of the hydraulic control body 50 is effective. Can be avoided.

  Further, the vertical wall 81 of the oil guide plate 80 is a curved surface that surrounds substantially half of the periphery of the position (directly below position) corresponding to the first communication hole 71 on the upper surface 51a of the separate plate 80 (the upper surface 50a of the hydraulic control body 50). It is formed in a shape. With this configuration, the hydraulic oil dropped on the upper surface 50a of the hydraulic control body 50 can be rectified more effectively, and a necessary amount of hydraulic oil can be more efficiently guided to the suction port 61 of the oil strainer 60. it can.

  In the automatic transmission 1 according to the present embodiment, a separate plate (plate-like member) 51 for forming the oil passage 56 in the hydraulic control body 50 is attached to the upper surface 50a of the hydraulic control body 50. . The oil guide plate 80 is fixed to the upper surface 51 a of the separate plate 51 by fastening bolts 55 for attaching the separate plate 51 to the main body 52 of the hydraulic control body 50.

  According to this configuration, the attachment of the separate plate 51 and the attachment of the oil guide plate 80 can be performed in one step by fastening the bolts 55. Therefore, the mounting operation of the oil guide plate 80 can be facilitated, the number of parts of the automatic transmission 1 can be reduced, and the structure can be simplified.

  The hydraulic control body 50 is fixed to the casing 20 that forms the oil pan chamber 40 with a separate plate 51 interposed therebetween. According to this configuration, the separation plate 51 and the oil guide plate 80 attached thereto are supported by fixing the hydraulic control body 50 to the casing 20, so that a more stable attachment state of the separation plate 51 and the oil guide plate 80 can be achieved. It can be secured.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the description of the second embodiment and the corresponding drawings, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted below. Further, matters other than those described below and matters other than those illustrated are the same as those in the first embodiment.

  FIG. 8 is a schematic sectional side view showing a part of an automatic transmission 1-2 provided with an oil guide plate 80-2 according to the second embodiment of the present invention. The oil guide plate 80-2 of the present embodiment is branched from the first vertical wall 81-1 disposed around the position directly below the first communication hole 71 and from the vicinity of the center in the longitudinal direction of the first vertical wall 81-1. And a second vertical wall 81-2 extending between the drive member 58 for the manual valve and a position directly below the third communication hole 73. Further, in the oil guide plate 80 of the first embodiment, the end portions (both end portions) 81a, 81a of the vertical wall 81 do not reach the outer peripheral edge 51b of the separate plate 51, and the end portions 81a, 81a of the vertical wall 81 The first vertical wall 81-1 and the second vertical wall 81-2 of the oil guide plate 80-2 of the present embodiment are spaced apart from the outer peripheral edge 51b of the separate plate 51. In either case, the end portions 81-1a and 81-2a reach the outer peripheral edge 51b of the separate plate 51. That is, both end portions 81-1a and 81-1a of the first vertical wall 81-1 reach the outer peripheral edge 51b of the separate plate 51, and the end portion 81-2a of the second vertical wall 81-2 is also formed of the separate plate 51. The outer peripheral edge 51b is reached. As a result, the region of the upper surface 51a of the separation plate 51 includes the region directly below the first communication hole 71 (region X) by the first vertical wall 81-1 and the second vertical wall 81-2 of the oil guide plate 80. ), A region (region Y) including a position directly below the second communication hole 72 and a position directly below the third communication hole 73, and a region (region Z) including the manual valve drive member 58 (region Z). It is divided.

  As a result, the hydraulic oil that has flowed down to the position immediately below the first communication hole 71 included in the region X is blocked by the first vertical wall 81-1 of the oil guide plate 80, and therefore flows into the region Y and the region Z. First, it falls from the outer peripheral edge 51 b of the separate plate 51 in the region X to the lower side of the hydraulic control body 50. Similarly, the hydraulic oil that has flowed down to the position immediately below the second communication hole 72 included in the region Y is blocked by the first vertical wall 81-1 and the second vertical wall 81-2 of the oil guide plate 80. It does not flow into X and the region Z, but falls from the outer peripheral edge 51 b of the separate plate 51 in the region Y to the lower side of the hydraulic control body 50.

  In the automatic transmission 1-2 of this embodiment, the end portions 81-1a and 81-2a of the oil guide plate 80-2 both reach the outer peripheral edge 51b of the separate plate 51, so that the upper surface of the separate plate 51 is reached. The area on the 51a side is completely divided into a plurality of areas. As a result, the hydraulic oil dropped from the communication hole of the partition wall to the upper surface of the hydraulic control device can be rectified more efficiently. Moreover, the mixed flow of the hydraulic oil dropped from the first communication hole 71 and the hydraulic oil dropped from the second and third communication holes 72 and 73 can be avoided. Furthermore, it is possible to more effectively prevent the hydraulic oil dropped from the communication holes 71, 72, 73 from being guided to the manual valve drive member 58.

  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. Deformation is possible. For example, the oil guide plate 80 (80-2) is attached so as to be interposed between a position corresponding to the communication hole 71 on the upper surface 50a of the hydraulic control body 50 and another position. The specific mounting position and shape are not limited to those shown in the drawings of the above embodiment as long as the shape has a function of rectifying the hydraulic oil falling on the upper surface 50a and effectively guiding it to the suction port 61. Other positions and shapes may be used.

1 Automatic transmission (transmission)
2, 3 Rotating shaft 4 Pulley 5 Gear 10 Transmission mechanism 11 Lower cover 11a Bolt 20 Casing 21 Partition 30 Machine room (main room)
40 Oil pan chamber (sub chamber)
41 Bottom 50 Hydraulic Control Body (Hydraulic Control Device)
50a Upper surface 51 Separate plate (plate-shaped member)
51a Upper surface 51b Outer peripheral edge 51c Through hole 52 Main body 55 Bolt 56 Oil passage 57 Manual valve 58 Drive member 58a Long hole 59 Connection member 59a Opening 59b (weir-shaped) enclosure 60 Oil strainer (strainer)
60b Lower surface 61 Suction port 65 Pipe 71 First communication hole 72 Second communication hole 73 Third communication hole 80 (80-2) Oil guide plate (guide member)
81 (81-1, 81-2) Vertical wall 82 Bottom wall

Claims (5)

A transmission mounted on a vehicle,
A main chamber that houses the speed change mechanism;
A sub chamber in which hydraulic oil is provided below the main chamber in the vertical direction with the transmission mounted on a vehicle;
A partition partitioning the main chamber and the sub chamber;
A communication hole formed in the partition wall for flowing down hydraulic oil from the main chamber to the sub chamber;
A hydraulic control device disposed below the partition wall in the sub chamber;
A strainer disposed below the hydraulic control device in the sub chamber;
A suction port for sucking hydraulic oil provided on the lower surface of the strainer,
A guide member interposed between a position corresponding to the communication hole on the upper surface of the hydraulic control device and another position is attached ,
The guide member has a vertical wall extending from an upper surface of the hydraulic control device toward the partition wall and both ends thereof extending toward an outer peripheral edge of the upper surface of the hydraulic control device. A transmission. A plurality of the communication holes provided in the partition wall are provided,
The guide member is provided corresponding to the one communication hole ,
The vertical wall is disposed so as to block a straight line connecting a position corresponding to the center of the one communication hole and a position corresponding to the center of the other communication hole on the upper surface of the hydraulic control device. The transmission according to claim 1. The transmission according to claim 1, wherein the vertical wall is formed in a curved surface shape that surrounds at least approximately half of the periphery of the position corresponding to the communication hole on the upper surface of the hydraulic control device. A plate-like member for forming an oil passage in the hydraulic control device is attached to the upper surface of the hydraulic control device,
The said guide member is being fixed to the upper surface of the said plate-shaped member by fastening of the volt | bolt for attaching this plate-shaped member to the said hydraulic control apparatus. The transmission as described in. The transmission according to claim 4, wherein the hydraulic control device is fixed to a casing forming the sub chamber with the plate-like member interposed therebetween.

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