JP4640312B2 - Oil pan and automobile - Google Patents

Description

  The present invention relates to an oil pan and an automobile.

  The automobile includes a drive device such as an engine and a power transmission device for transmitting the power of the drive device to a tire. The power transmission device has a function of amplifying the rotational force from the drive device. The power transmission device includes a gear for converting power from the drive device. An example of the power transmission device is an automatic transmission.

  Inside the automatic transmission, oil for transmitting power from the engine to gears and lubricating each gear is disposed. Or the oil for controlling engagement of a clutch is arrange | positioned inside an automatic transmission. Such oil is stored in an oil pan disposed at the bottom of the casing of the automatic transmission. The oil stored in the oil pan is sucked by, for example, an oil pump and supplied to a valve body having a function of engaging each gear, torque converter or clutch.

  Japanese Patent Laid-Open No. 2002-181170 discloses an oil suction device in which a fixing seat portion of a retractable valve seat is fixed to the bottom surface of an oil pan, and a retractable member is arranged on the inner periphery of the fixing seat. ing. In this oil suction device, it is disclosed that when the oil is shifted to one side due to sudden acceleration / deceleration and sudden turning, a collapsible member arranged on the downstream side of the oil flow is erected to block the oil. .

  In Japanese Patent Application Laid-Open No. 2005-42929, a rotary type in which a suction pipe bent in an oblique direction is suspended at a lower portion of an oil strainer so as to be able to rotate 360 degrees in a horizontal plane, and a weight is fixed to a collar of the suction pipe. An oil inlet is disclosed. In this rotary oil suction port, it is disclosed that the eccentric weight of the weight is rotated by an inertial force against the inclination and acceleration of the vehicle body to guide the opening at the tip of the suction pipe toward the oil bias side.

  Japanese Patent Laid-Open No. 2002-180814 discloses an oil strainer in which a movable suction member formed in a spherical shape is swingably supported on the bottom surface of a lower case of an oil strainer, and a suction port is formed at the bottom of the movable suction member. Has been. In this oil strainer, when the oil is deviated to one side by sudden acceleration / deceleration and sudden turning, the movable suction member swings following the flow of the oil, so that the suction port is always immersed in the oil. It is disclosed to be maintained.

In Japanese Patent Laid-Open No. 6-323120, a suction port portion of an oil strainer is arranged along the bottom of an oil pan, and a box type valve that moves by the flow of oil before and after the vehicle traveling direction is provided at the suction port portion. A four-cycle engine for a vehicle provided is disclosed. In this four-cycle engine, the oil in the oil pan moves to the front side or the rear side in the vehicle traveling direction in accordance with the deceleration or acceleration of the vehicle, and the suction port of the oil strainer automatically changes accordingly. Therefore, it is disclosed that air is prevented from being sucked from the mouth of the oil strainer.
JP 2002-181170 A JP-A-2005-42929 JP 2002-180814 A JP-A-6-323120

  An oil pan for storing oil disposed inside the transmission is attached to the bottom of the transmission as a part of the casing of the transmission, for example. For example, an oil pump is disposed in the transmission. The oil stored in the oil pan is sucked up from the suction port of the oil strainer.

  The oil stored in the oil pan is affected by, for example, the behavior of the object on which the transmission in which the oil pan is disposed is mounted. For example, when the transmission is disposed in an automobile, when the automobile decelerates rapidly, the oil is biased forward due to the inertia of the oil itself. When the vehicle starts suddenly, the oil is biased toward the rear side. Or, when the vehicle turns suddenly to the left or right, the oil is biased to one of the left and right directions.

  As described above, when oil is affected by acceleration and moves inside the oil pan, there is a problem that air may be mixed in from the suction port for sucking the oil. If air enters from the oil suction port, for example, in an automatic transmission, there is a problem that the drive temporarily stops or the drive becomes unstable.

  In the above-mentioned patent documents, there are problems that the structure is complicated and the response speed is slow. For example, an oil suction device disclosed in Japanese Patent Application Laid-Open No. 2002-181170 is provided with a retractable member, and is formed so that the oil flow is blocked by the retractable member standing upright. However, since the circular movement is performed from the state in which the collapsible member falls down, it takes time to reach the state where the oil flow is restricted, and the oil flow cannot be sufficiently suppressed. there were.

  An object of the present invention is to provide an oil pan and an automobile that suppress air from being sucked from an oil suction port facing the oil pan.

  An oil pan according to one aspect based on the present invention includes a first moving member formed to be movable in one direction. A second moving member formed to be movable in a direction perpendicular to the one direction and having a second inclined surface at a tip in the perpendicular direction is provided. A first support part is provided for movably supporting the first moving member and the second moving member. The first moving member is arranged to press the second inclined surface when acceleration is applied in the one direction. The second moving member is formed to move in the vertical direction when the first moving member presses the second inclined surface. The second moving member is formed to protrude from the surface of the support portion by moving in the vertical direction.

  Preferably, in the above invention, the first moving member has a first inclined surface at a tip in the one direction. The first moving member and the second moving member are arranged so that the first inclined surface and the second inclined surface are in contact with each other.

  Preferably, in the above invention, the first moving member is arranged to be movable in the horizontal direction. The second moving member is arranged to be movable in the vertical direction. The first moving member is formed to have a specific gravity smaller than that of oil.

  The vehicle in one aspect based on this invention is provided with the transmission containing the oil pan in the said one aspect.

  Preferably, in the above invention, the transmission includes an oil strainer. The oil strainer has an oil suction port that opens downward. The suction port is arranged to face the oil pan. The first moving member and the second moving member are arranged to extend in the width direction of the vehicle body. The first moving member and the second moving member are disposed on the front side of the suction port.

  The oil pan in another aspect based on this invention is provided with the 3rd moving member formed in plate shape. A second support part is provided for movably supporting the third moving member. The third moving member has an arc shape in cross section. The second support part is formed so that the third moving member is movably supported along the arcuate shape. The third moving member is formed to protrude from the surface of the support portion when acceleration is applied.

  An automobile in another aspect based on the present invention includes a transmission including the oil pan in the other aspect.

  Preferably, in the above invention, the transmission includes an oil strainer. The oil strainer has an oil suction port that opens downward. The suction port is arranged to face the oil pan. The third moving member is disposed so as to extend in the width direction of the vehicle body. The third moving member is disposed on the front side of the suction port.

  ADVANTAGE OF THE INVENTION According to this invention, the oil pan and motor vehicle which suppress that air is attracted | sucked from the oil suction inlet facing an oil pan can be provided.

(Embodiment 1)
With reference to FIG. 1 to FIG. 9, the oil pan and the automobile in the first embodiment will be described.

  The automobile in the present embodiment is an FR (Front engine Rear wheel drive) type automobile in which an engine is arranged on the front side and is driven by a rear wheel. The automobile in the present embodiment includes an automatic transmission. The automatic transmission in the present embodiment includes an oil pan.

  FIG. 1 is a schematic exploded perspective view of an automatic transmission according to the present embodiment. The automatic transmission in the present embodiment is mounted on an automobile. An arrow 100 indicates the front direction of the vehicle body. The automatic transmission has a longitudinal direction and is arranged so that the longitudinal direction is the longitudinal direction of the vehicle body.

  The housing of the automatic transmission 10 includes a transmission case 11 that is opened vertically downward. The casing of the automatic transmission 10 includes an oil pan 12. The oil pan 12 is disposed so as to close the opening of the transmission case 11. A gear, a shaft, a bearing, and the like are disposed inside the transmission case 11. The transmission case 11 houses a gear train for shifting the power from the engine and outputting it to the drive shaft side.

  Oil pan 12 in the present embodiment is formed in a saucer shape. The oil pan 12 is formed in a box shape with an upper portion opened. The oil pan 12 has a bottom plate 12a. The oil pan 12 in the present embodiment is made of metal. The oil pan 12 is not limited to this form and can be formed of any material. For example, the oil pan may be formed of resin.

  The oil pan 12 includes a weir device 1 as a first weir device in the present embodiment. The weir device 1 is disposed on the bottom plate 12 a of the oil pan 12.

  FIG. 2 is a schematic cross-sectional view of the oil pan portion of the automatic transmission according to the present embodiment. 2 is a cross-sectional view taken along the line II-II in FIG.

  Referring to FIGS. 1 and 2, a predetermined amount of oil 90 is filled in the casing of automatic transmission 10. The oil pan 12 stores oil 90. The oil 90 in this embodiment is called an ATF (automatic transmission fluid), and operates a clutch for performing a gear shift, transmits a force in a torque converter, and prevents seizure between mechanical elements such as gears. Or function as a lubricating oil.

  A valve body 13 for performing hydraulic control such as a clutch is disposed below the gear train housed in the transmission case 11. The valve body 13 is spaced apart from the bottom plate 12a in the vertical direction.

  A strainer 14 is disposed at the bottom of the valve body 13. The strainer 14 is formed so as to remove foreign matter from the oil 90 supplied from the oil pan 12. The strainer 14 is disposed between the bottom plate 12 a and the valve body 13.

  The strainer 14 has an oil inlet 14a disposed on the bottom surface 14c. The suction port 14a faces the bottom plate 12a. The suction port 14a is spaced apart from the bottom plate 12a in the vertical direction.

  The strainer 14 is connected to an oil pump (not shown) through a flow path that penetrates the valve body 13. When the oil pump is driven, the oil 90 stored in the oil pan 12 is sucked into the strainer 14 from the oil suction port 14a. The oil 90 sucked into the strainer 14 is supplied to the torque converter, the valve body 13 and various gears by an oil pump.

  In FIG. 3, the 1st expansion schematic sectional drawing of the weir apparatus in this Embodiment is shown. The oil pan 12 in the present embodiment includes a weir device 1. The weir device 1 includes a slide member 1a as a first moving member and a slide member 1b as a second moving member. The slide member 1a has an inclined surface 1c as a first inclined surface at the tip. The slide member 1b has an inclined surface 1d as a second inclined surface at the tip.

  The weir device 1 has a support portion 12b as a first support portion for supporting the slide member 1a and the slide member 1b. The support portion 12b supports the slide member 1a so as to be movable in the front-rear direction of the vehicle body as one direction. The support portion 12b supports the slide member 1a so as to be movable in the horizontal direction. The support portion 12b supports the slide member 1b so as to be movable in a vertical direction as a direction perpendicular to one direction.

  FIG. 4 shows a schematic perspective view of a portion of the slide member in the present embodiment. The direction indicated by arrow 110 is the width direction of the vehicle body. The direction indicated by the arrow 101 is the front-rear direction of the vehicle body. The direction indicated by the arrow 102 is the vertical direction. The slide member 1a in the present embodiment is formed in a plate shape. Further, the slide member 1b in the present embodiment is formed in a plate shape.

  The slide members 1a and 1b are formed so as to extend in the width direction of the vehicle body indicated by an arrow 110. The inclined surface 1c is formed at the front end. The inclined surface 1c is formed to face obliquely upward on the front side of the vehicle body. The inclined surface 1d is formed at the lower end. The inclined surface 1d is formed to face obliquely downward on the rear side of the vehicle body.

  The inclined surface 1c and the inclined surface 1d are disposed so as to contact each other. The inclined surface 1c is formed so as to press the inclined surface 1d when the slide member 1a moves toward the slide member 1b. The inclined surfaces 1c and 1d are formed so as to lift the slide member 1b upward in the vertical direction when the slide member 1a moves to the front side of the vehicle body. The slide member 1a in the present embodiment is formed to have a specific gravity smaller than that of the slide member 1b. Further, the slide member 1a in the present embodiment is formed so as to have a specific gravity smaller than that of oil.

  FIG. 5 shows a schematic plan view of the oil pan in the present embodiment. The weir device 1 in the present embodiment has a longitudinal direction. The weir device 1 is arranged so that the longitudinal direction and the width direction of the vehicle body indicated by the arrow 110 are substantially parallel. The weir device 1 in the present embodiment is disposed on the front side of the oil suction port 14a. The weir device 1 in the present embodiment is disposed in the vicinity of the oil suction port 14a.

  In FIG. 6, the 2nd expansion schematic sectional drawing of the weir apparatus in this Embodiment is shown. FIG. 6 is a schematic cross-sectional view when the automobile is decelerated and acceleration is applied.

  A large acceleration is generated when the automobile performs deceleration such as sudden braking. The slide member 1a moves to the front side of the vehicle body as indicated by an arrow 103 due to inertia. The inclined surface 1c and the inclined surface 1d are engaged. When the inclined surface 1 d is pushed by the inclined surface 1 c, the slide member 1 b moves upward in the vertical direction as indicated by an arrow 104. The slide member 1b jumps upward from the surface of the support portion 12b.

  The oil stored in the oil pan 12 tends to flow toward the front side indicated by the arrow 103 by deceleration, but at this time, the oil is blocked by the slide member 1 b of the weir device 1. Since it is possible to block the oil from moving forward, it is possible to prevent air from being sucked from the oil suction port 14a.

  In the weir device in the present embodiment, the first moving member moves quickly according to the acceleration. For this reason, a 2nd moving member can be pushed up in a short time, and the movement of oil can be suppressed effectively.

  When the acceleration to decelerate decreases, the slide member 1b moves in the direction indicated by the arrow 105 by the weight of the slide member 1b. The slide member 1b moves downward in the vertical direction. When the inclined surface 1c is pressed against the inclined surface 1d, the slide member 1a moves in the direction opposite to the direction indicated by the arrow 103 and returns to the original position.

  In the present embodiment, the slide member 1a as the first moving member is formed to have a specific gravity smaller than that of the slide member 1b as the second moving member. In particular, in the present embodiment, the slide member 1a is formed so as to be lighter than the specific gravity of the oil. For this reason, the sliding resistance between the slide member 1a and the support portion 12b can be reduced, and the slide member 1a can be moved more quickly when acceleration is applied.

  In the present embodiment, the weir device 1 is disposed on the front side of the suction port 14a. The oil moves inside the oil pan 12 not only by sudden braking but also by sudden acceleration or sudden turning. However, the largest acceleration is applied during sudden braking. For this reason, by arranging the weir device on the front side of the oil suction port, air can be effectively prevented from being sucked from the suction port.

  In FIG. 7, the schematic plan view of an oil pan provided with the 2nd dam apparatus in this Embodiment is shown. The dam device 2 as the second dam device is disposed on the bottom plate 12 a of the oil pan 12. The weir device 2 is formed so as to extend along the shape of the oil suction port 14a. The weir device 2 is formed in an arc shape when viewed in plan. The weir device 2 in the present embodiment is formed concentrically with the oil suction port 14a. Thus, the weir device is not limited to a linear shape, and may be formed in a curved shape when viewed in plan.

  In FIG. 8, the schematic plan view of an oil pan provided with the 3rd dam apparatus in this Embodiment is shown. The third weir device includes a plurality of linear weir devices. The third weir device includes two weir devices 1 and two weir devices 3 formed on the bottom plate 12a. The two weir devices 1 are arranged so that their extending directions are substantially parallel to each other. The two weir devices 3 are arranged so that their extending directions are substantially parallel to each other. The oil suction port 14a is surrounded by the four weir devices 1 and 3. The weir device 1 is disposed on the front side and the rear side of the vehicle body with respect to the suction port 14a. The weir device 3 is disposed on the left and right sides of the vehicle body with respect to the suction port 14a.

  In each weir device 1, 3, the first moving member is disposed inside the second moving member. The first moving member is moved outward by the acceleration of the vehicle body, and the second moving member is pushed up.

  By disposing the weir device 3 on the left and right sides of the oil suction port 14a, it is possible to suppress the oil from moving in the width direction of the vehicle body when performing a sudden turn or the like. Further, by disposing the weir device 1 on the rear side of the oil suction port 14a, it is possible to suppress the oil from moving toward the rear side of the vehicle body when the automobile suddenly starts. In this way, the weir devices can be arranged in any number and position.

  FIG. 9 shows a schematic cross-sectional view of the fourth weir device in the present embodiment. The dam device 4 as the fourth dam device is formed on the bottom plate 12 a of the oil pan 12. The weir device 4 has a rolling member 4a as a first moving member. The rolling member 4a is formed in a cylindrical shape. The rolling member 4a is arranged so that the columnar axial direction is substantially parallel to the width direction of the vehicle body. The rolling member 4a is formed to be movable in the front-rear direction of the vehicle body.

  The weir device 4 has a slide member 4b as a second moving member. The slide member 4b is supported so as to be movable in the vertical direction. The slide member 4b is formed in a plate shape. The slide member 4b has an inclined surface 4d at the tip.

  In the fourth weir device, for example, when acceleration is caused by sudden deceleration, the rolling member 4 a rolls to the front side of the vehicle body as indicated by an arrow 103. Alternatively, the rolling member 4 a moves in the direction indicated by the arrow 103. The rolling member 4a presses the inclined surface 4d. As the rolling member 4 a moves, the slide member 4 b is lifted as indicated by an arrow 104. When the slide member 4b moves upward, the slide member 4b has a dam shape, and oil can be prevented from moving forward.

  Thus, the shape of the first moving member is not limited to a plate shape or a prismatic shape, and any shape that can press the second moving member can be employed.

  The oil suction port in the present embodiment is arranged in the oil strainer, but is not limited to this form, and the present invention can be applied to an oil pan that faces the oil suction port of an arbitrary device.

  The weir device in the present embodiment is arranged in the automatic transmission, but is not limited to this form, and can be arranged in any oil pan. For example, the present invention can be applied to an oil pan such as a manual transmission, a two-wheel automobile transmission, or an engine.

(Embodiment 2)
With reference to FIGS. 10 to 13, the oil pan and the automobile in the second embodiment will be described. The automobile in the present embodiment includes an automatic transmission. The automatic transmission includes an oil pan including a weir device.

  FIG. 10 is a first enlarged schematic cross-sectional view of a portion of the oil pan weir device in the present embodiment. The oil pan 15 is formed in a box shape having an upper surface opened. The oil pan 15 has a bottom plate 15a. The oil pan 15 in the present embodiment includes a weir device 5. The weir device 5 is disposed on the bottom plate 15a. The weir device 5 includes a slide member 5a as a third moving member. The slide member 5a is formed in a plate shape.

  FIG. 11 is a schematic perspective view of the slide member in the present embodiment. The slide member 5a is formed in a curved plate shape. The slide member 5a is formed in an arc shape in cross section.

  Referring to FIG. 10, the weir device 5 has a support portion 15 b as a second support portion. The slide member 5a is supported by the support portion 15b. The support part 15b is formed so that a cross-sectional shape follows the shape of the slide member 5a. The support portion 15b is formed so that the slide member 5a moves along the arc shape of the cross-sectional shape of the slide member 5a as indicated by an arrow 106. The support portion 15b supports the slide member 5a so that the slide member 5a is inclined with respect to the surface of the bottom plate 15a when viewed from the side.

  FIG. 12 shows a schematic plan view of the oil pan in the present embodiment. The weir device 5 in the present embodiment is formed in a straight line when viewed in plan. The weir device 5 is disposed on the front side of the oil suction port 14a. The weir device 5 is formed to extend in the width direction of the vehicle body.

  FIG. 13 shows a second enlarged schematic cross-sectional view of a portion of the oil pan weir device in the present embodiment. When the automobile is traveling toward the front side indicated by the arrow 100, the vehicle may suddenly brake. When sudden braking is performed, the slide member 5a moves along the shape of the support portion 15b by its own inertia, as indicated by an arrow 107. A part of the slide member 5a jumps out from the surface of the bottom plate 15a.

  When sudden braking is performed, the oil moves toward the front side of the vehicle body as indicated by an arrow 103. When the slide member 5a jumps out, the oil can be prevented from moving to the front side. As a result, air can be prevented from being sucked from the oil suction port 14a of the strainer 14.

  When the acceleration of the automobile decreases, the slide member 5a moves to the opposite side to the direction indicated by the arrow 107 by its own weight and is accommodated in the support portion 15b. The slide member 5a returns to the original position when the acceleration is reduced.

  Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof will not be repeated here.

(Embodiment 3)
With reference to FIGS. 14 to 18, an oil pan and an automobile in the third embodiment will be described.

  The vehicle in the present embodiment is a front engine front wheel drive (FF) type vehicle in which an engine is disposed on the front side. In the transmission of the present embodiment, a gear for amplifying the rotational force from the engine and a differential (differential device) for transmitting the rotational force from these gears to the drive shaft are integrally formed. The

  FIG. 14 is a schematic exploded perspective view of the automatic transmission according to the present embodiment. The automatic transmission 20 in the present embodiment includes a main case 70. In the main case 70, gears such as a planetary gear, a counter driven gear, and a differential are arranged.

  A torque converter housing 71 is disposed at the end of the main case 70 on the engine side. A torque converter is disposed inside the torque converter housing 71. A rear cover 72 is disposed at the end of the main case 70 opposite to the engine side.

  An oil pan 73 for storing oil is disposed below the main case 70. The oil in the present embodiment is an automatic transmission oil called ATF.

  The oil pan 73 in the present embodiment includes the weir device 1. The weir device in the present embodiment is the same as the first weir device in the first embodiment (see FIGS. 2 to 6). The weir device 1 is disposed closer to the front side of the vehicle body indicated by the arrow 100. The weir device 1 is arranged such that the longitudinal direction is substantially parallel to the width direction of the vehicle body. The weir device 1 in the present embodiment is disposed on the front side of an oil suction port of a strainer described later.

  FIG. 15 is a schematic cross-sectional view taken along the line XV-XV in FIG. Referring to FIGS. 14 and 15, automatic transmission 20 in the present embodiment includes a transmission gear housing 51. The transmission gear accommodating portion 51 is formed to accommodate a planetary gear for performing a gear change. The transmission gear housing 51 includes an oil pan 73 at the bottom. The oil pan 73 is formed in a box shape whose upper surface is open.

  The automatic transmission 20 includes a differential gear housing 52. The differential gear accommodating portion 52 is formed to accommodate the differential link gear 63. A plurality of differential gears are arranged in the differential gear housing 52 in the present embodiment. The bottom portion of the differential gear housing 52 is formed along the shape of the link gear 63 among the differential gears. The differential gear housing 52 is formed so that oil can be stored at the bottom.

  A main shaft 81 that is an axis of an input shaft communicating with the shaft of the torque converter is inserted into the transmission gear housing 51. A differential shaft 82 corresponding to the shafts of the drive shafts 66 and 67 (see FIG. 16) connected to the differential is inserted through the differential gear housing 52. Above the differential shaft 82, a counter shaft 83 which is a shaft of a counter driven gear and a differential drive pinion is inserted.

  The differential is disposed so as to scoop up oil stored in the bottom of the differential gear housing 52. In the present embodiment, link gear 63 is mainly formed to scoop up oil. In the state shown in FIG. 15, the oil 90 is stored so that the bottom of the link gear 63 is immersed.

  The automatic transmission 20 includes an isolation wall portion 78 disposed between the transmission gear housing portion 51 and the differential gear housing portion 52. The isolation wall 78 is formed so as to stand from the bottom of the main case 70. The isolation wall portion 78 has a communication hole 78 a formed so that oil flows between the transmission gear housing portion 51 and the differential gear housing portion 52. The communication hole 78 a is formed so as to penetrate the isolation wall portion 78.

  The automatic transmission 20 in the present embodiment includes a strainer 74. The strainer 74 has an oil inlet 74a. The suction port 74 a is disposed at the bottom of the oil pan 73. The suction port 74 a is disposed so as to face the oil pan 73.

  The automatic transmission 20 includes a valve body 75 disposed on the upper side of the strainer 74. The valve body 75 is formed so as to control the engagement of the clutch inside the automatic transmission 20.

  A pipe 84 is connected to the bottom of the differential gear housing 52. A pipe 85 is connected to the side wall of the transmission gear housing 51. The pipe 85 in the present embodiment is arranged at a position higher than the position where the oil level of the oil 90 is highest. An air breather 87 is disposed on the upper wall of the main case 70. The air breather 87 is formed so that air can be supplied into the main case 70.

  The automatic transmission 20 in the present embodiment is formed so that the oil 90 can be extracted from the pipe 84. The automatic transmission 20 has an oil tank (not shown). The pipe 84 communicates with the oil tank through an oil pump. The automatic transmission 20 is formed so that oil stored in the oil tank can be returned to the inside of the automatic transmission 20 through the pipe 85. Thus, the automatic transmission 20 in the present embodiment is formed so that the amount of oil inside the housing can be adjusted.

  With reference to FIG. 16 and FIG. 17, the problem that air is sucked from the suction port of the strainer will be described. FIG. 16 shows a first schematic diagram when a plan view of an engine and an automatic transmission as a comparative example in the present embodiment is shown. FIG. 17 shows a second schematic diagram when the engine and the automatic transmission as a comparative example in the present embodiment are viewed in plan. FIG. 16 is a schematic diagram when turning leftward. FIG. 17 is a schematic diagram when the brake is further suddenly performed while turning leftward.

  An arrow 100 indicates the front side of the automobile. The engine 88 is disposed on the side of the transmission gear housing 51. The differential gear housing 52 is disposed on the rear side of the transmission gear housing 51. The drive shafts 66 and 67 are arranged so as to extend toward the left and right front wheels. The suction port 74 a of the strainer 74 is disposed at the center of the oil pan 73 when the oil pan 73 is viewed in plan.

  Referring to FIG. 16, when the vehicle is moving forward, for example, when it turns sharply to the left side, as shown by arrow 108, oil 90 stored in transmission gear housing 51 and The oil 90 stored in the differential gear housing 52 is biased to the right. Referring to FIG. 17, when sudden braking is performed while turning leftward, oil 90 is biased forward as indicated by arrow 109.

  At this time, the oil 90 stored in the differential gear housing portion 52 is restricted from flowing into the transmission gear housing portion 51 by the isolation wall portion 78. For this reason, in the transmission gear housing 51, air may be sucked from the suction port 74a when the oil 90 is biased to the front side. In particular, in the automatic transmission according to the present embodiment, the height of the oil surface is formed to be adjustable, and when the oil level of the oil stored in the transmission gear housing 51 is low, air is sucked from the suction port 74a. There is.

  FIG. 18 is a schematic diagram when the automatic transmission including the oil pan having the weir device and the engine in the present embodiment are viewed in a plan view. FIG. 18 is a schematic diagram when sudden braking is performed while turning left.

  The weir device 1 in the present embodiment is disposed in front of the strainer suction port 74a. The weir device 1 is disposed so as to extend in the width direction of the vehicle body. When sudden braking is performed while turning to the left, the amount of oil 90 that flows into the transmission gear housing 51 is limited by the isolation wall 78. The oil 90 stored in the transmission gear housing 51 tends to move toward the front side of the vehicle body as indicated by an arrow 109. However, the disposition of the weir device 1 prevents the flow of the oil 90 from being blocked and moving to the front side. As a result, air is suppressed from being sucked from the strainer suction port 74a.

  Since other configurations, operations, and effects are the same as those in the first or second embodiment, description thereof will not be repeated here.

  In the respective drawings described above, the same or corresponding parts are denoted by the same reference numerals.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

1 is a schematic exploded perspective view of an automatic transmission according to a first embodiment. 2 is an enlarged schematic cross-sectional view of an oil pan portion of the automatic transmission according to Embodiment 1. FIG. FIG. 3 is a first enlarged schematic cross-sectional view of the first weir device in the first embodiment. FIG. 3 is a schematic perspective view of a slide member portion of the first weir device in the first embodiment. 2 is a schematic plan view of an oil pan including the first weir device in Embodiment 1. FIG. FIG. 3 is a second enlarged schematic cross-sectional view of the first weir device in the first embodiment. 3 is a schematic plan view of an oil pan including the second weir device in the first embodiment. FIG. FIG. 4 is a schematic plan view of an oil pan provided with a third weir device in the first embodiment. 4 is a schematic cross-sectional view of a fourth weir device in Embodiment 1. FIG. FIG. 10 is a first enlarged schematic cross-sectional view of a portion of an oil pan weir device in a second embodiment. 10 is a schematic perspective view of a slide member in Embodiment 2. FIG. 6 is a schematic plan view of an oil pan in a second embodiment. FIG. FIG. 10 is a second enlarged schematic cross-sectional view of a portion of a weir device for an oil pan in a second embodiment. FIG. 10 is a schematic exploded perspective view of an automatic transmission according to a third embodiment. 6 is a schematic cross-sectional view of an automatic transmission according to Embodiment 3. FIG. FIG. 10 is a first schematic diagram of a portion of an automatic transmission and an engine of a comparative example in the third embodiment. FIG. 10 is a second schematic diagram of a portion of an automatic transmission and an engine of a comparative example in the third embodiment. FIG. 6 is a schematic diagram of a portion of an automatic transmission and an engine having a weir device in a third embodiment.

Explanation of symbols

  1-5 Weir device, 1a, 1b, 4a, 4b, 5a Slide member, 1c, 1d, 4d Inclined surface, 4a Rolling member, 10, 20 Automatic transmission, 11 Transmission case, 12, 15 Oil pan, 12a, 15a bottom plate, 12b, 15b support portion, 13 valve body, 14 strainer, 14a suction port, 14c bottom surface, 51 transmission gear housing portion, 52 differential gear housing portion, 63 link gear, 66, 67 drive shaft, 70 main case, 71 Torque converter housing, 72 Rear cover, 73 Oil pan, 74 Strainer, 74a Suction port, 75 Valve body, 78 Isolation wall, 78a Communication hole, 81 Main shaft, 82 Differential shaft, 83 Counter shaft, 84, 85 Piping, 87 Air breather , 88 engine, 90 oil, 100-11 Arrow.

Claims (8)

A first moving member formed to be movable in one direction;
A second moving member formed to be movable in a direction perpendicular to the one direction, and having a second inclined surface at a tip in the perpendicular direction;
A first support for movably supporting the first moving member and the second moving member;
The first moving member is arranged to press the second inclined surface by applying acceleration in the one direction,
The second moving member is formed to move in the vertical direction when the first moving member presses the second inclined surface.
The oil pan, wherein the second moving member is formed so as to jump out from the surface of the support portion by moving in the vertical direction. The first moving member has a first inclined surface at a tip in the one direction,
2. The oil pan according to claim 1, wherein the first moving member and the second moving member are disposed such that the first inclined surface and the second inclined surface are in contact with each other. The first moving member is arranged to be movable in the horizontal direction,
The second moving member is arranged to be movable in the vertical direction,
The oil pan according to claim 1 or 2, wherein the first moving member is formed to have a specific gravity smaller than that of oil.   An automobile comprising a transmission including the oil pan according to any one of claims 1 to 3. The transmission includes an oil strainer,
The oil strainer has an oil suction port that opens downward.
The suction port is arranged to face the oil pan,
The first moving member and the second moving member are arranged to extend in the width direction of the vehicle body,
The automobile according to claim 4, wherein the first moving member and the second moving member are disposed on a front side of the suction port. A third moving member formed in a plate shape;
A second support for movably supporting the third moving member;
The third moving member is formed in an arc shape in cross section,
The second support part is formed so that the third moving member is movably supported along the arcuate shape,
The third moving member is an oil pan formed so as to protrude from the surface of the support portion when acceleration is applied.   An automobile comprising a transmission including the oil pan according to claim 6. The transmission includes an oil strainer,
The oil strainer has an oil suction port that opens downward.
The suction port is arranged to face the oil pan,
The third moving member is arranged to extend in the width direction of the vehicle body,
The automobile according to claim 7, wherein the third moving member is disposed on a front side of the suction port.

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