WO2021152341A1 - Oil suction device - Google Patents

Oil suction device Download PDF

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Publication number
WO2021152341A1
WO2021152341A1 PCT/IB2020/000064 IB2020000064W WO2021152341A1 WO 2021152341 A1 WO2021152341 A1 WO 2021152341A1 IB 2020000064 W IB2020000064 W IB 2020000064W WO 2021152341 A1 WO2021152341 A1 WO 2021152341A1
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WO
WIPO (PCT)
Prior art keywords
oil
oil passage
suction
mover
acceleration
Prior art date
Application number
PCT/IB2020/000064
Other languages
French (fr)
Japanese (ja)
Inventor
豪成 奥山
Original Assignee
日産自動車株式会社
ルノー エス． ア． エス．
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日産自動車株式会社, ルノー エス． ア． エス． filed Critical 日産自動車株式会社
Priority to PCT/IB2020/000064 priority Critical patent/WO2021152341A1/en
Publication of WO2021152341A1 publication Critical patent/WO2021152341A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating

Definitions

  • the present invention relates to an oil inhaler.
  • the oil suction device has a configuration in which the rotation support mechanism is arranged directly below the in-vehicle device and the oil suction port extends downward from the rotation support mechanism, so that the dimension in the height direction has to be increased.
  • it is a configuration with a low degree of freedom in layout, which can be applied only to an in-vehicle device mounted in a place where there is a margin in the height direction.
  • an object of the present invention is to provide an oil inhalation device having a high degree of freedom in layout.
  • a plurality of suction portions arranged in a lower oil reservoir in an in-vehicle device to which oil is supplied by an oil pump, and a plurality of suction portions via a plurality of first oil passages.
  • An oil suction device is provided that includes an oil passage switching portion that is connected to each of the above and is connected to an oil pump via a second oil passage.
  • this oil suction device at least a pair of suction parts are arranged so as to face each other in the front-rear direction or the left-right direction of the vehicle, and an oil passage switching part is used for each flow path from each suction part to the second oil passage.
  • the communication state in which the flow of the oil is allowed and the cut-off state in which the flow is cut off are switched according to the acceleration acting on the oil passage switching portion.
  • FIG. 1 is a schematic configuration diagram of an oil suction device according to the first embodiment.
  • FIG. 2 is a diagram showing an example of mounting an oil suction device on an in-vehicle device.
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG.
  • FIG. 4 is an exploded view of the oil passage switching portion according to the first embodiment.
  • FIG. 5 is a first diagram for explaining the movement of the mover according to the first embodiment.
  • FIG. 6 is a second diagram for explaining the movement of the mover according to the first embodiment.
  • FIG. 7 is a diagram showing the structure of the second case.
  • FIG. 8 is a first diagram for explaining the oil passage switching operation of the first embodiment.
  • FIG. 9 is a second diagram for explaining the oil passage switching operation of the first embodiment.
  • FIG. 8 is a first diagram for explaining the oil passage switching operation of the first embodiment.
  • FIG. 10 is a diagram showing a mover and a first case according to a modified example.
  • FIG. 11 is a schematic configuration diagram of the oil suction device according to the second embodiment.
  • FIG. 12 is an outline view of the oil passage switching portion according to the second embodiment.
  • FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG.
  • FIG. 14 is a diagram showing the structure of the lower case.
  • FIG. 15 is a diagram showing a mover according to the second embodiment.
  • FIG. 16 is a first diagram for explaining the oil passage switching operation of the second embodiment.
  • FIG. 17 is a second diagram for explaining the oil passage switching operation of the second embodiment.
  • FIG. 18 is a third diagram for explaining the oil passage switching operation of the second embodiment.
  • FIG. 1 is a schematic configuration diagram of an oil suction device 1 according to the present embodiment.
  • the oil suction device 1 includes two suction units 3A and 3B arranged in an oil reservoir portion below the vehicle-mounted device to which oil is supplied by the oil pump 6.
  • the in-vehicle device referred to here is, for example, a drive motor, a gearbox, or a drive motor and a gearbox of an electric vehicle connected and integrated.
  • the oil sump is located below the inside of the case of these in-vehicle devices.
  • the oil suction device 1 is connected to each of the two suction portions 3A and 3B via the two first oil passages 4A and 4B, and is connected to the oil pump 6 via the second oil passage 5. It is provided with an oil passage switching unit 2. The specific configuration of the oil passage switching unit 2 will be described later.
  • the oil suction device 1 includes two suction sections 3A and 3B and two first oil passages 4A and 4B. In the following description, if it is not necessary to distinguish between the two suction sections 3A and 3B, the suction sections 3 and the first oil passages 1 It is called 4.
  • the oil sucked up from the suction unit 3 flows into the oil pump 6 through the oil passage switching unit 2 and the second oil passage 5, and is supplied from there to the in-vehicle device via the supply oil passage 7. After being subjected to lubrication and cooling, the supplied oil falls into the oil sump and is sucked up from the suction unit 3 again. In this way the oil circulates.
  • FIG. 2 is a side view showing an example of the arrangement of the oil suction device 1 when the vehicle-mounted device is a device in which the drive motor 8 and the gearbox 9 are coaxially connected and integrated.
  • the horizontal direction of the paper surface is the horizontal direction of the vehicle
  • the vertical direction of the paper surface is the vertical direction of the vehicle
  • the front-rear direction of the paper surface is the front-rear direction of the vehicle.
  • the drive motor 8 includes an annular stator 8A fixed to the case 8D, a rotor 8B rotatably supported by the case 8D and rotating inside the stator 8A, and a rotor shaft 8C which is a rotation shaft of the rotor 8B.
  • the rotor shaft 8C is a hollow circular tube, and the motor-side drive shaft 10 penetrates the inside.
  • the gear box 9 is a so-called planetary gear mechanism and is housed in the case 9A.
  • the case 9A and the case 8D are connected by bolts and integrated with the rotor shaft 8C and the rotating shaft of the planetary gear mechanism aligned coaxially.
  • One end of the rotor shaft 8C and the motor side drive shaft 10 is connected to the gear box 9.
  • the gearbox side drive shaft 11 is connected to the gearbox 9 coaxially with the motor side drive shaft 10 from the direction opposite to the rotor shaft 8C and the motor side drive shaft 10.
  • An oil reservoir 12 is formed in the lower part of the inside of the integrated case 9A and 8D.
  • a suction unit 3A is arranged on the gear box 9 side of the oil pool portion 12, and a suction unit 3B is arranged on the drive motor 8 side. That is, the suction unit 3A and the suction unit 3B are arranged so as to face each other in the front-rear direction of the vehicle.
  • the oil passage switching portion 2 is arranged between the drive motor 8 and the gear box 9 inside the integrated case 9A and case 8D.
  • An oil pump 6 is connected to the oil passage switching portion 2 via a second oil passage 5, and a supply oil passage 7 is also connected to the oil pump 6.
  • the oil sucked up by the oil pump 6 from the suction unit 3 arranged in the oil reservoir 12 passes through the supply oil passage 7 and is geared from above as shown by the thick arrow in the figure. It is supplied to the box 9 and the drive motor 8.
  • the oil used for cooling and lubrication falls into the oil sump portion 12 as it is.
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG.
  • the oil passage switching portion 2 is arranged offset from directly below the rotation axis of the drive motor 8 (that is, the rotor shaft 8C) in a direction orthogonal to the rotation axis of the drive motor 8.
  • the vertical dimension becomes large and the degree of freedom in layout is low.
  • the degree of freedom in layout is increased by arranging them at offset as shown in FIG.
  • suction unit 3A and the suction unit 3B are arranged so as to face each other in the left-right direction of the vehicle. As a result, even if the oil level is tilted due to the tilt of the vehicle body and the action of acceleration when starting or decelerating, oil can be sucked up from any of the suction units 3.
  • FIG. 4 is an exploded view of the oil passage switching portion 2.
  • the oil passage switching portion 2 includes a first case 21, a second case 22, and an annular mover 23.
  • the first case 21 is provided with a connection port 21A to which the second oil passage 5 is connected on the upper surface.
  • Two suction portions 3 are connected to the second case 22 via two first oil passages 4.
  • the first case 21 is provided with a cylindrical recess (hereinafter, referred to as a housing portion 21B) for accommodating the mover 23 on the connecting surface with the second case 22. Further, a pump-side oil hole 21D is opened on the bottom surface of the accommodating portion 21B. The connection port 21A and the pump-side oil hole 21D are connected by a fourth oil passage 21E formed inside the first case 21.
  • the wall surface of the accommodating portion 21B functions as a rolling surface 21C on which the mover 23 rolls.
  • first case 21 and the second case 22 in a state where the mover 23 is accommodated in the accommodating portion 21B, bolts (not shown) are used via a seal member (not shown) for preventing oil from entering the accommodating portion 21B. Is concluded by.
  • the bottom surface of the accommodating portion 21B and the rear end surface 23D of the mover 23 are movable, and the surface of the second case 22 on the first case 21 side is movable.
  • a slight gap of, for example, several tens [ ⁇ m] to one hundred [ ⁇ m] is provided between the child 23 and the front end surface 23A. This is to allow the mover 23 to move freely along the rolling surface 21C.
  • FIG. 5 and 6 are diagrams for explaining the movement of the mover 23 in the accommodating portion 21B.
  • FIG. 5 shows a state in which acceleration is not acting
  • FIG. 6 shows a state in which acceleration is acting.
  • the "state in which acceleration is not acting" in this description is a state in which the vehicle is in a horizontal state and the front-rear acceleration when the vehicle accelerates or decelerates and the lateral acceleration when the vehicle turns are not acting. Say that.
  • the mover 23 In the state where the acceleration is not acting, the mover 23 is located at the lowermost part of the rolling surface 21C as shown in FIG. Then, when the acceleration acts, as shown in FIG. 6, the mover 23 rolls along the rolling surface 21C in the direction opposite to the direction in which the acceleration acts. In either state, the pump-side oil hole 21D communicates with the space on the inner peripheral side of the mover 23.
  • FIG. 7 is a diagram for explaining the structure of the second case 22.
  • the connection surface 22E is a surface facing the first case 21.
  • a suction portion side connection port 22A to which the first oil passage 4A is connected is provided on one side surface of the second case 22, and the first oil passage 4B is connected to the other side surface facing the side surface.
  • the suction unit side connection port 22B is provided.
  • the connection surface 22E has a crescent-shaped suction portion-side oil hole 22C that is convex in the direction of the suction portion-side connection port 22A, and a crescent-shaped suction portion-side oil hole 22D that is convex in the direction of the suction portion-side connection port 22B. It is provided so as to face each other.
  • the suction part side oil hole 22C is connected to the suction part side connection port 22A, and the suction part side oil hole 22D is connected to the suction part side connection port 22B by the third oil passages 22F and 22G provided inside the second case 22, respectively. There is.
  • FIG. 8 and 9 are diagrams for explaining the positional relationship between the two suction unit side oil holes 22C and 22D and the mover 23.
  • FIG. 8 shows a state in which acceleration is not acting
  • FIG. 9 shows a state in which acceleration is acting.
  • the two suction portion side oil holes 22C and 22D are at symmetrical positions with respect to the center line C extending in the vertical direction through the center of the mover 23 in a state where acceleration is not acting. Then, in a state where acceleration is not acting, as shown in FIG. 8, approximately half of the openings of the suction portion side oil holes 22C and 22D are closed by the mover 23, respectively.
  • the mover 23 moves due to the action of acceleration, as shown in FIG. 9, the opening area of one suction portion side oil hole 22C expands, and the other suction portion side oil hole 22D is completely closed by the mover 23. ..
  • the state may be between the state shown in FIG. 8 and the state shown in FIG.
  • the opening areas of the oil holes 22C and 22D on the suction portion side, the curvature of the rolling surface 21C, and the like are determined by the amount of oil circulation required by the in-vehicle device to be applied, the capacity of the oil pump 6, and the oil pool. It is appropriately set according to the dimensions of the portion 12, the oil level height, and the like. However, when the oil level is tilted to the extent that one of the suction parts 3 is exposed to the air due to the action of acceleration, the suction part side oil hole 22D connected to the exposed suction part 3 is blocked by the mover 23. Need to be.
  • the oil passage switching portion 2 is arranged in a direction in which the mover 23 moves according to the acceleration in the front-rear direction of the vehicle. It is assumed that the oil level height is set so that the two suction portions 3 are not exposed to the air even if the lateral acceleration during turning acts.
  • the mover 23 In the state where the acceleration is not acting, the mover 23 is in the state shown in FIGS. 5 and 8. That is, the central space of the mover 23 communicates with the connection port 21A on the upper surface of the first case 21 via the pump side oil hole 21D, and the central space of the mover 23 communicates with the two suction portion side oil holes 22C. It will be in a state of communicating with 22D. As a result, oil is sucked up from both the two suction portions 3A and 3B.
  • an oil suction device 1 that includes an oil passage switching unit 2 that is connected to each of the plurality of suction units 3 via a second oil passage 5 and is connected to an oil pump 6 via a second oil passage 5.
  • this oil suction device 1 at least a pair of suction portions 3 are arranged so as to face each other in the front-rear direction or the left-right direction of the vehicle, and oil passage switching portions 2 are provided from each suction portion 3 to the second oil passage 5.
  • the communication state in which the oil flow is allowed and the cutoff state in which the flow is cut off are switched according to the acceleration acting on the oil passage switching unit 2.
  • the oil passage switching portion 2 By providing the oil passage switching portion 2, it is possible to block the flow path of the plurality of suction portions 3 that are exposed to the air due to the action of acceleration to prevent the suction of air. Since the oil passage switching unit 2 only needs to be connected to the oil pump 6 and the plurality of suction units 3 via pipes, there is a high degree of freedom in layout when arranging the oil passage switching unit 2 in the in-vehicle device.
  • the in-vehicle device is a power train component including a rotating body, and the oil passage switching portion 2 is arranged at a position offset from directly below the rotating body of the rotating body in a direction orthogonal to the rotating axis.
  • the power train component is one in which the drive motor 8 and the gear box 9 are coaxially connected, and the oil passage switching portion 2 is between the drive motor 8 and the gear box 9. Therefore, it is arranged at a position offset in the rotation direction from directly below the rotation axis of the drive motor 8.
  • An in-vehicle device including a rotating body must have a case that accommodates the rotating body in a vertical dimension larger than the diameter of the rotating body.
  • the vertical dimension of the case is as small as possible. Since the drive motor 8 and the gearbox 9 that are coaxially integrated are arranged under the floor of the vehicle, it is particularly desired to reduce the vertical dimension. In that respect, in the oil suction device 1 of the present embodiment, since the oil passage switching portion 2 can be arranged at a position offset from directly below the vehicle-mounted device as described above, the vertical dimension of the vehicle-mounted device can be made smaller.
  • the oil passage switching unit 2 includes a mover 23 that moves when it receives acceleration, and the mover 23 opens and closes each flow path to switch between a communication state and a cutoff state.
  • the oil passage can be switched without using complicated parts such as a valve mechanism for opening and closing the oil passage, a power for operating the valve mechanism, a controller, and the like.
  • the oil passage switching portion 2 is connected to the annular mover 23, the second case (suction portion side case) 22 to which the plurality of suction portions 3A-3B are connected, and the oil pump 6.
  • a first case (pump side case) 21 is provided.
  • the second case 22 is a third of a plurality of oil passages communicating the plurality of first oil passages 4A-4B and the accommodating portion 21B, that is, from the suction portion side connection ports 22A and 22B to the suction portion side oil holes 22C and 22D. It has oil passages 22F and 22G.
  • the first case 21 includes an oil passage that connects the second oil passage 5 and the accommodating portion 21B, that is, a fourth oil passage 21E from the connection port 21A to the pump-side oil hole 21D.
  • the accommodating portion 21B includes a rolling surface 21C on which the mover 23 can roll.
  • the mover 23 is located at the lower end of the rolling surface 21C, and all the third oil passages 22F, 22G and the fourth oil passage 21E are opened.
  • the mover 23 rolls up on the rolling surface 21C, shuts off the third oil passage 22G connected to the suction portion 3 exposed to the air due to the action of the acceleration, and sucks not exposed to the air.
  • the third oil passage 22F and the fourth oil passage 21E connected to the portion 3 are opened.
  • the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air to the oil pump 6 is blocked by the acceleration, and the suction unit 3 is not exposed to the air. Oil can only be sucked up from.
  • the in-vehicle device is connected to the drive motor 8 and the gear box 9
  • the in-vehicle device is only the drive motor 8 or only the gear box 9. It is applicable as well.
  • the problem of making the vertical dimension smaller is the same as in the case where the drive motor 8 and the gearbox 9 are integrated. Then, by arranging the oil passage switching portion 2 offset in the direction orthogonal to the rotation axis from directly below the rotation axis of the drive motor 8 or the gearbox 9, the increase in the dimension in the height direction is suppressed and the layout is performed. The degree of freedom can be increased.
  • FIG. 10 is a diagram showing a mover 23 and a first case 21 according to a modified example. Other configurations are basically the same as those in the above-described embodiment.
  • the mover 23 of this modification includes an annular part similar to the mover 23 of the above embodiment, and a disk-shaped shaft member 25 attached to this part via an arm member 24.
  • the concave accommodating portion 21B accommodating the mover 23 is provided with a support portion 26 that rotatably supports the shaft member 25 of the mover 23.
  • the mover 23 can make a pendulum movement in the accommodating portion 21B according to the acting acceleration. That is, in the above embodiment, the mover 23 opens or shuts off the suction portion side oil holes 22C and 22D by rolling on the rolling surface 21C, but in this modified example, the mover 23 performs a pendulum movement to perform the same effect. Fulfill.
  • the oil passage switching portion 2 is connected to the mover 23, the second case (suction portion side case) 22 to which the plurality of suction portions 3A and 3B are connected, and the oil pump 6.
  • a first case (pump side case) 21 is provided.
  • the mover 23 is accommodated in the accommodating portion 21B formed inside by connecting the second case 22 and the first case 21.
  • the second case 22 includes a plurality of third oil passages 22F and 22G that communicate the plurality of first oil passages 4A and 4B with the accommodating portion 21B.
  • the first case 21 includes a fourth oil passage 21E that connects the second oil passage 5 and the accommodating portion 21B.
  • the mover 23 is swingably fixed to either the second case 22 or the first case 21, and in a state where the mover 23 is not subjected to acceleration, the mover 23 is all the third oil passages 22F, 22G and the fourth oil passage. In the state where the 21E is opened and the acceleration is received, the mover 23 moves to block the third oil passage 22G connected to the suction portion 3 exposed to the air by the action of the acceleration, and is exposed to the air. An oil suction device that opens the third oil passage 22F and the fourth oil passage 21E connected to the suction portion 3.
  • the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air to the oil pump 6 due to the acceleration is cut off. Oil can be sucked up only from the suction unit 3 which is not exposed to the air.
  • the oil suction device according to the present embodiment is the same as the first embodiment in terms of the on-vehicle device to be mounted and the mounting position, but the structure of the oil passage switching portion 2 is different. Hereinafter, the differences will be mainly described.
  • FIG. 11 is a schematic configuration diagram of the oil suction device 1 according to the present embodiment.
  • the oil suction device 1 includes four suction sections 3A-3D arranged in the oil reservoir section 12 below the vehicle-mounted device to which the oil is supplied by the oil pump 6.
  • the in-vehicle device referred to here is, for example, a drive motor, a gearbox, or a drive motor and a gearbox of an electric vehicle connected and integrated.
  • the oil sump portion 12 is located below the inside of the case of these in-vehicle devices.
  • the oil suction device 1 is connected to each of the four suction portions 3A-3D via the four first oil passages 4A-4D, and is connected to the oil pump 6 via the second oil passage 5. It is provided with an oil passage switching unit 2. The specific configuration of the oil passage switching unit 2 will be described later.
  • the oil suction device 1 includes four suction sections 3A and 3B and four first oil passages 4A and 4B. However, in the following description, if it is not necessary to distinguish between the suction sections 3A and 3B, the suction sections 3 and the first oil passages 1 It is called 4.
  • the oil sucked up from the suction unit 3 flows into the oil pump 6 through the oil passage switching unit 2 and the second oil passage 5, and is supplied from there to the in-vehicle device via the supply oil passage 7. After being subjected to lubrication and cooling, the supplied oil falls into the oil sump and is sucked up from the suction unit 3 again. In this way the oil circulates.
  • the arrangement of the oil suction device is basically the same as that of the first embodiment. However, the four suction portions 3 are arranged at the four corners of the oil sump portion 12.
  • FIG. 12 is an outline view of the oil passage switching portion 2.
  • FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG.
  • the oil passage switching unit 2 includes an upper case 30 that is on the upper side in a vehicle-mounted state, a lower case 31 that is on the lower side, and a mover 32.
  • a connection port 21A to which the second oil passage 5 is connected is provided substantially in the center of the upper case 30.
  • suction portions 3 are connected to the lower case 31.
  • the upper case 30 and the lower case 31 are fastened with bolts (not shown) via a seal member (not shown) that prevents oil from entering the accommodating portion 30A, which will be described later.
  • a concave accommodating portion 30A is formed on the surface of the upper case 30 facing the lower case 31, and the mover 32 is accommodated therein. Further, the connection port 21A communicates with the accommodating portion 30A via the fourth oil passage 30B penetrating the upper case 30.
  • FIG. 14 is a configuration diagram of the lower case 31.
  • a step portion 33 is formed in a predetermined range from the center of the upper surface of the lower case 31 toward the outer circumference so as to project upward from the other ranges.
  • Four substantially rectangular recesses 33A-33D are provided in the range near the center of the step 33. These four recesses 33A-33D are arranged in 2 rows and 2 columns at a predetermined pitch.
  • the pitch referred to here is the distance between adjacent recesses, and is, for example, the distance between the center points of the adjacent recesses 33A-33D.
  • the depth of the recess 33A-33D is set so that, for example, the bottom surface of the recess 33A-33D is at the same height as the portion other than the recess 33A-33D.
  • the step portion 33 may be formed integrally with the lower case 31, or may be formed as a separate body and then attached to the lower case 31. When it is formed as a separate body, the plate-shaped member may be provided with four through holes corresponding to the recesses 33A-33D.
  • a cylindrical vertical hole 34A-34D is opened at a position near the center of the lower case 31 on the upper surface of the lower case 31, more specifically, on the bottom surface of each of the recesses 33A-33D.
  • a suction portion side connection port 31A-31D to which the first oil passage 4A-4D is connected is provided on the side surface of the lower case 31, a suction portion side connection port 31A-31D to which the first oil passage 4A-4D is connected is provided.
  • Horizontal holes 31E-31H extend from each of the suction unit side connection ports 31A-31D, and the vertical holes 34A-34D and the suction unit side connection ports 31A-31D communicate with each other through these horizontal holes 31E-31H. That is, the horizontal holes 31E-31H, the vertical holes 34A-34D, and the recesses 33A-33D form a plurality of third oil passages that communicate the plurality of first oil passages 4A-4D and the accommodating portion 30A.
  • FIG. 15 is a configuration diagram of the mover 32.
  • the mover 32 includes a substantially rectangular pedestal portion 32E and a wall portion 32F extending upward from the pedestal portion 32E.
  • each substantially circular oil passage holes 32A-32D penetrating the pedestal portion 32E in the vertical direction are arranged in 2 rows and 2 columns at a predetermined pitch.
  • the pitch referred to here is the distance between the adjacent oil passage holes 32A-32D, and is, for example, the distance between the center points of the adjacent oil passage holes 32A-32D.
  • the pitch of the four oil passage holes 32A-32D is smaller than the pitch of the four recesses 33A-33D described above.
  • the diameter of the oil passage holes 32A-32D is appropriately set according to the amount of oil circulation required by the in-vehicle device to be applied, the capacity of the oil pump 6, and the like.
  • the wall portion 32F is arranged so as to surround the four oil passage holes 32A-32D.
  • the inner peripheral wall of the wall portion 32F overlaps with the circumscribed lines of the oil passage holes 32A-32D arranged in 2 rows and 2 columns, and the four corners of the inner peripheral wall overlap with the outer circumference of the oil passage holes 32A-32D.
  • the height of the wall portion 32F is, for example, about several tens [ ⁇ m] to 100 [ ⁇ m] between the upper surface of the wall portion 32F and the upper surface of the accommodating portion 30A when the wall portion 32F is accommodated in the accommodating portion 30A as shown in FIG. Set so that there is a slight gap.
  • the wall portion 32F may be formed integrally with the pedestal portion 32E, or may be formed as a separate body and then attached to the pedestal portion 32E.
  • FIGS. 16 to 18 are diagrams showing the movement of the mover 32 with respect to the lower case 31 when it receives acceleration. More specifically, FIG. 16 shows a state in which acceleration is not acting and the mover 32 is in the center of the step 33, FIG. 17 shows a state in which lateral acceleration due to turning is applied, and FIG. 18 shows a state in which lateral acceleration due to turning is applied. It shows the state in which acceleration and front-back acceleration due to acceleration act.
  • the upward direction of the drawing is the traveling direction of the vehicle, and the downward direction is the backward direction of the vehicle.
  • the recesses 33A-33D are the portions facing the oil passage holes 32A-32D, in other words, the oil passage holes 32A- when viewed from above.
  • the portion overlapping with 32D opens.
  • the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above.
  • the mover 32 moves to the left along the upper surface of the step 33 as shown in FIG.
  • the recesses 33A and 33D lined up on the right side are closed by the pedestal portion 32E, and the recesses 33B and 33C lined up on the left side are the portions facing the oil passage holes 32B and 32C, respectively, in other words, the oil passage when viewed from above.
  • the portion overlapping the holes 32B and 32C opens.
  • the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above.
  • the mover 32 moves diagonally forward to the left along the upper surface of the step 33, as shown in FIG.
  • the recesses 33A and 33D lined up on the right side and the recess 33B on the left rear are closed by the pedestal portion 32E, and the recess 33C on the left front is a portion facing the oil passage hole 32C, in other words, oil when viewed from above.
  • a portion overlapping the road hole 32C (a portion shaded in the figure) opens.
  • the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above.
  • the mover 32 When returning from the state shown in FIG. 17 or 18 to the state in which acceleration does not act, the mover 32 remains in the position shown in FIG. 17 or 18, but sucks oil from the open oil passage. There is no problem because it can be done.
  • a wall portion 32F surrounding the oil passage holes 32A-32D is formed, and the inside of the wall portion 32F is formed with an oil passage from the oil passage hole 32A-32D to the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B.
  • an increase in oil passage resistance of the oil passage from the oil passage holes 32A-32D to the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is suppressed.
  • the upper surface of the wall portion 32F closes a part of the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B when the mover 32 moves, the oil passage resistance increases and the inside of the wall portion 32F Negative pressure will increase.
  • the increased negative pressure increases the gap between the lower surface of the mover 32 and the upper surface of the step 33, and the amount of air sucked in increases. Therefore, in order to suppress the increase in the negative pressure inside the wall portion 32F, when the mover 32 moves, the upper surface of the wall portion 32F partially covers the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B. But don't block it.
  • the plurality of first oil passages 4A-4D and one second oil passage 5 are connected to the oil passage switching portion 2, and the oil passage switching portion 2 is connected to the mover 32.
  • the upper case 30 is on the upper side in the vehicle-mounted state, and the lower case 31 is on the lower side in the vehicle-mounted state.
  • the mover 32 is accommodated in the accommodating portion 30A formed inside by connecting the upper case 30 and the lower case 31.
  • the upper case 30 includes a fourth oil passage 30B that connects the second oil passage 5 and the accommodating portion 30A, and an opening on the accommodating portion 30A side of the fourth oil passage 30B opens in the center of the upper case 30.
  • the lower case 31 includes a plurality of third oil passages 31E-31H, 34A-34D, 33A-33D that communicate the plurality of first oil passages 4A-4D and the accommodating portion 30A, and the plurality of third oil passages 31E.
  • the openings on the accommodating portion 30A side of ⁇ 31H, 34A-34D, 33A-33D are on the upper surface of the lower case 31, which is a surface orthogonal to the vertical direction of the vehicle, at a predetermined pitch in the front-rear direction and the left-right direction of the vehicle. Be placed.
  • the mover 32 penetrates the pedestal portion (plate-shaped member) 32E having a flat bottom surface and the pedestal portion 32E in the vertical direction of the vehicle, and the third oil passages 31E-31H and 34A-34D in the front-rear direction and the left-right direction of the vehicle.
  • a plurality of oil passage holes (through holes) 32A-32D arranged at a pitch smaller than the pitch of the openings of 33A-33D and a plurality of oil passage holes 32A-32D are surrounded and extend upward from the pedestal portion 32E.
  • the fourth oil passage 40B is provided with a wall portion 32F forming an oil passage from the opening on the accommodating portion 30A side to the plurality of oil passage holes 32A-32D.
  • the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air due to the acceleration is shut off to the oil pump 6. Oil can be sucked up only from the suction unit 3 which is not exposed to the air.
  • the oil passage switching unit 2 of the present embodiment may be connected to the plurality of suction units 3 and the oil pump 6 via piping, so that the oil passage switching unit 2 may be arranged in the in-vehicle device. High degree of layout freedom.
  • the entire opening of the connection port on the accommodating portion 30A side and the opening on the accommodating portion side of the fourth oil passage 30B opens on the inner peripheral side of the wall portion 32F. It is provided as follows. As a result, the negative pressure in the oil passage from the suction unit 3 to the oil pump 6 is not excessively developed, so that an increase in the amount of air sucked can be suppressed.

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Abstract

This oil suction device comprises a plurality of suction units positioned in an oil reservoir in the lower part of an in-vehicle device where oil is supplied by an oil pump, and an oil passage switching unit connected to each of the plurality of suction units via a plurality of first oil passages and connected to the oil pump via a second oil passage. In this oil suction device, at least a pair of suction units are positioned so as to face each other in the front-rear direction or the left-right direction of the vehicle, and the oil passage switching unit switches flow passages from the suction units to the second oil passage between a communication state in which oil flow is allowed and a blocked state in which flow is blocked, in accordance with the acceleration rate acting on the oil passage switching unit.

Description

オイル吸入装置Oil inhaler
　本発明は、オイル吸入装置に関する。 The present invention relates to an oil inhaler.
　変速機や電動車の駆動用モータ等のように、オイルが装置の下方に設けたオイルパン内からオイルポンプを用いて吸い上げられ、潤滑や冷却のために装置に供給され、供給されたオイルがオイルパンに戻る、という循環を繰り返す車載装置が知られている。このような車載装置のオイルの循環に用いられるオイル吸入装置がＪＰ２００５−０４２９２９Ａに開示されている。具体的には、オイルパンの底側を向く開口部を有するオイル吸入口を、開口部がオイルパンの底に沿って回転移動可能に上方から支持し、開口部と一体に回転して車体の傾きや加速状態に追従してオイルの偏る側に開口部を移動させるおもり部材を設ける構成が開示されている。この構成によれば、加速時等にオイルパン内の油面が傾いても、オイルポンプがオイルを吸入せずに空気を吸入してしまうという事態を回避できる。 Like a transmission or a drive motor for an electric vehicle, oil is sucked up from an oil pan provided below the device using an oil pump, and is supplied to the device for lubrication and cooling. An in-vehicle device that repeats a cycle of returning to an oil pan is known. An oil suction device used for oil circulation of such an in-vehicle device is disclosed in JP2005-042299A. Specifically, an oil suction port having an opening facing the bottom side of the oil pan is supported from above so that the opening can rotate and move along the bottom of the oil pan, and rotates integrally with the opening to rotate the vehicle body. A configuration is disclosed in which a weight member is provided to move the opening on the side where the oil is biased in accordance with an inclination or an acceleration state. According to this configuration, even if the oil level in the oil pan is tilted during acceleration or the like, it is possible to avoid a situation in which the oil pump sucks air without sucking oil.
　しかしながら、上記文献に開示された構成では、あらゆる方向の油面の傾きに対応するためには、オイル吸入口の回転中心をオイルパンの中央に配置する必要がある。すなわち、オイル吸入口を回転可能に支持する回転支持機構を車載装置の直下に配置することが必要となる。このため、オイル吸入装置は、車載装置の直下に回転支持機構が配置され、そこから下方にオイル吸入口が伸びるという構成になるので、高さ方向の寸法が大きくならざるを得ない。換言すると、高さ方向に余裕がある場所に搭載される車載装置にしか適用できない、レイアウトの自由度が低い構成である。 However, in the configuration disclosed in the above document, it is necessary to arrange the rotation center of the oil suction port in the center of the oil pan in order to cope with the inclination of the oil level in all directions. That is, it is necessary to arrange a rotation support mechanism that rotatably supports the oil suction port directly under the in-vehicle device. For this reason, the oil suction device has a configuration in which the rotation support mechanism is arranged directly below the in-vehicle device and the oil suction port extends downward from the rotation support mechanism, so that the dimension in the height direction has to be increased. In other words, it is a configuration with a low degree of freedom in layout, which can be applied only to an in-vehicle device mounted in a place where there is a margin in the height direction.
　そこで本発明は、レイアウトの自由度が高いオイル吸入装置を提供することを目的とする。 Therefore, an object of the present invention is to provide an oil inhalation device having a high degree of freedom in layout.
　本発明のある態様によれば、オイルポンプによってオイルが供給される車載装置内の下方にあるオイル溜まり部に配置される複数の吸入部と、複数の第１油路を介して複数の吸入部のそれぞれと接続され、かつ第２油路を介してオイルポンプと接続される油路切り替え部と、を備えるオイル吸入装置が提供される。このオイル吸入装置は、少なくとも一対の吸入部が、車両の前後方向または左右方向に相対するように配置され、油路切り替え部が、各吸入部から第２油路までの各流路について、オイルの流通が許容される連通状態と、流通が遮断される遮断状態と、を油路切り替え部に作用する加速度に応じて切り替える。 According to an aspect of the present invention, a plurality of suction portions arranged in a lower oil reservoir in an in-vehicle device to which oil is supplied by an oil pump, and a plurality of suction portions via a plurality of first oil passages. An oil suction device is provided that includes an oil passage switching portion that is connected to each of the above and is connected to an oil pump via a second oil passage. In this oil suction device, at least a pair of suction parts are arranged so as to face each other in the front-rear direction or the left-right direction of the vehicle, and an oil passage switching part is used for each flow path from each suction part to the second oil passage. The communication state in which the flow of the oil is allowed and the cut-off state in which the flow is cut off are switched according to the acceleration acting on the oil passage switching portion.
図１は、第１実施形態にかかるオイル吸入装置の概略構成図である。FIG. 1 is a schematic configuration diagram of an oil suction device according to the first embodiment. 図２は、オイル吸入装置の車載装置への搭載例を示す図である。FIG. 2 is a diagram showing an example of mounting an oil suction device on an in-vehicle device. 図３は、図２のＩＩＩ−ＩＩＩ線に沿った断面図である。FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 図４は、第１実施形態にかかる油路切り替え部の分解図である。FIG. 4 is an exploded view of the oil passage switching portion according to the first embodiment. 図５は、第１実施形態にかかる可動子の動きを説明するための第１の図である。FIG. 5 is a first diagram for explaining the movement of the mover according to the first embodiment. 図６は、第１実施形態にかかる可動子の動きを説明するための第２の図である。FIG. 6 is a second diagram for explaining the movement of the mover according to the first embodiment. 図７は、第２ケースの構造を示す図である。FIG. 7 is a diagram showing the structure of the second case. 図８は、第１実施形態の油路切り替え動作を説明するための第１の図である。FIG. 8 is a first diagram for explaining the oil passage switching operation of the first embodiment. 図９は、第１実施形態の油路切り替え動作を説明するための第２の図である。FIG. 9 is a second diagram for explaining the oil passage switching operation of the first embodiment. 図１０は、変形例にかかる可動子及び第１ケースを示す図である。FIG. 10 is a diagram showing a mover and a first case according to a modified example. 図１１は、第２実施形態にかかるオイル吸入装置の概略構成図である。FIG. 11 is a schematic configuration diagram of the oil suction device according to the second embodiment. 図１２は、第２実施形態にかかる油路切り替え部の外形図である。FIG. 12 is an outline view of the oil passage switching portion according to the second embodiment. 図１３は、図１２のＸＩＩＩ−ＸＩＩＩ線に沿った断面図である。FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 図１４は、下側ケースの構造を示す図である。FIG. 14 is a diagram showing the structure of the lower case. 図１５は、第２実施形態にかかる可動子を示す図である。FIG. 15 is a diagram showing a mover according to the second embodiment. 図１６は、第２実施形態の油路切り替え動作を説明するための第１の図である。FIG. 16 is a first diagram for explaining the oil passage switching operation of the second embodiment. 図１７は、第２実施形態の油路切り替え動作を説明するための第２の図である。FIG. 17 is a second diagram for explaining the oil passage switching operation of the second embodiment. 図１８は、第２実施形態の油路切り替え動作を説明するための第３の図である。FIG. 18 is a third diagram for explaining the oil passage switching operation of the second embodiment.
　以下、図面を参照して、本発明の実施形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　［第１実施形態］
　本発明の第１実施形態について、図１から図９を参照して説明する。 [First Embodiment]
The first embodiment of the present invention will be described with reference to FIGS. 1 to 9.
　［オイル吸入装置の概略構成］
　図１は、本実施形態に係るオイル吸入装置１の概略構成図である。 [Outline configuration of oil suction device]
FIG. 1 is a schematic configuration diagram of an oil suction device 1 according to the present embodiment.
　オイル吸入装置１は、オイルポンプ６によってオイルが供給される車載装置内の下方にあるオイル溜まり部に配置される２つの吸入部３Ａ、３Ｂを備える。ここでいう車載装置とは、例えば電動車の駆動用モータ、ギヤボックス、または駆動用モータとギヤボックスとが接続されて一体化したものである。オイル溜まり部は、これら車載装置のケース内下方に位置する。 The oil suction device 1 includes two suction units 3A and 3B arranged in an oil reservoir portion below the vehicle-mounted device to which oil is supplied by the oil pump 6. The in-vehicle device referred to here is, for example, a drive motor, a gearbox, or a drive motor and a gearbox of an electric vehicle connected and integrated. The oil sump is located below the inside of the case of these in-vehicle devices.
　また、オイル吸入装置１は、２本の第１油路４Ａ、４Ｂを介して２つの吸入部３Ａ、３Ｂのそれぞれと接続され、かつ第２油路５を介してオイルポンプ６と接続される油路切り替え部２とを備える。油路切り替え部２の具体的な構成については後述する。なお、オイル吸入装置１は２つの吸入部３Ａ、３Ｂと２本の第１油路４Ａ、４Ｂを備えるが、以下の説明において、区別する必要がない場合には吸入部３、第１油路４と称する。 Further, the oil suction device 1 is connected to each of the two suction portions 3A and 3B via the two first oil passages 4A and 4B, and is connected to the oil pump 6 via the second oil passage 5. It is provided with an oil passage switching unit 2. The specific configuration of the oil passage switching unit 2 will be described later. The oil suction device 1 includes two suction sections 3A and 3B and two first oil passages 4A and 4B. In the following description, if it is not necessary to distinguish between the two suction sections 3A and 3B, the suction sections 3 and the first oil passages 1 It is called 4.
　吸入部３から吸い上げられたオイルは、油路切り替え部２、第２油路５を通ってオイルポンプ６に流入し、そこから供給油路７を介して車載装置に供給される。供給されたオイルは、潤滑及び冷却に供された後、オイル溜まり部に落下し、再び吸入部３から吸い上げられる。このようにしてオイルは循環する。 The oil sucked up from the suction unit 3 flows into the oil pump 6 through the oil passage switching unit 2 and the second oil passage 5, and is supplied from there to the in-vehicle device via the supply oil passage 7. After being subjected to lubrication and cooling, the supplied oil falls into the oil sump and is sucked up from the suction unit 3 again. In this way the oil circulates.
　［オイル吸入装置の配置］
　図２は、車載装置が駆動用モータ８とギヤボックス９とが同軸上に接続されて一体化したものである場合の、オイル吸入装置１の配置の一例を示す側面図である。なお、図２の紙面左右方向が車両の左右方向、紙面上下方向が車両の上下方向、紙面前後方向が車両の前後方向である。 [Arrangement of oil suction device]
FIG. 2 is a side view showing an example of the arrangement of the oil suction device 1 when the vehicle-mounted device is a device in which the drive motor 8 and the gearbox 9 are coaxially connected and integrated. In FIG. 2, the horizontal direction of the paper surface is the horizontal direction of the vehicle, the vertical direction of the paper surface is the vertical direction of the vehicle, and the front-rear direction of the paper surface is the front-rear direction of the vehicle.
　駆動用モータ８は、ケース８Ｄに固定された円環状のステータ８Ａと、ケース８Ｄに回転可能に支持されてステータ８Ａの内側で回転するロータ８Ｂと、ロータ８Ｂの回転軸であるロータシャフト８Ｃとを備える。ロータシャフト８Ｃは中空円管であり、内部をモータ側駆動軸１０が貫通している。 The drive motor 8 includes an annular stator 8A fixed to the case 8D, a rotor 8B rotatably supported by the case 8D and rotating inside the stator 8A, and a rotor shaft 8C which is a rotation shaft of the rotor 8B. To be equipped. The rotor shaft 8C is a hollow circular tube, and the motor-side drive shaft 10 penetrates the inside.
　ギヤボックス９は、いわゆる遊星歯車機構であって、ケース９Ａに収容されている。 The gear box 9 is a so-called planetary gear mechanism and is housed in the case 9A.
　駆動用モータ８とギヤボックス９は、ロータシャフト８Ｃと遊星歯車機構の回転軸とが同軸上に並ぶ状態で、ケース９Ａとケース８Ｄとがボルトにより接続されて一体化している。ロータシャフト８Ｃ及びモータ側駆動軸１０の一端部はギヤボックス９に接続されている。また、ギヤボックス９には、ロータシャフト８Ｃ及びモータ側駆動軸１０とは反対方向から、モータ側駆動軸１０と同軸上にギヤボックス側駆動軸１１が接続されている。 In the drive motor 8 and the gear box 9, the case 9A and the case 8D are connected by bolts and integrated with the rotor shaft 8C and the rotating shaft of the planetary gear mechanism aligned coaxially. One end of the rotor shaft 8C and the motor side drive shaft 10 is connected to the gear box 9. Further, the gearbox side drive shaft 11 is connected to the gearbox 9 coaxially with the motor side drive shaft 10 from the direction opposite to the rotor shaft 8C and the motor side drive shaft 10.
　一体化したケース９Ａ及びケース８Ｄの内側下部にはオイル溜まり部１２が形成される。オイル溜まり部１２のギヤボックス９側には吸入部３Ａが、同じく駆動用モータ８側には吸入部３Ｂが、それぞれ配置されている。つまり、吸入部３Ａと吸入部３Ｂは、車両の前後方向に相対するよう配置されている。 An oil reservoir 12 is formed in the lower part of the inside of the integrated case 9A and 8D. A suction unit 3A is arranged on the gear box 9 side of the oil pool portion 12, and a suction unit 3B is arranged on the drive motor 8 side. That is, the suction unit 3A and the suction unit 3B are arranged so as to face each other in the front-rear direction of the vehicle.
　油路切り替え部２は、一体化したケース９Ａ及びケース８Ｄの内部の、駆動用モータ８とギヤボックス９との間に配置されている。そして、油路切り替え部２は第２油路５を介してオイルポンプ６が接続されており、オイルポンプ６には供給油路７も接続されている。油路切り替え部２を上記の通り配置することで、一体化したケース９Ａ及びケース８Ｄの内部の、駆動用モータ８とギヤボックス９との間に生じる空間を有効に活用することができる。 The oil passage switching portion 2 is arranged between the drive motor 8 and the gear box 9 inside the integrated case 9A and case 8D. An oil pump 6 is connected to the oil passage switching portion 2 via a second oil passage 5, and a supply oil passage 7 is also connected to the oil pump 6. By arranging the oil passage switching portion 2 as described above, the space created between the drive motor 8 and the gear box 9 inside the integrated case 9A and case 8D can be effectively utilized.
　上記のような構成により、オイル溜まり部１２内に配置した吸入部３からオイルポンプ６によって吸い上げられたオイルは、供給油路７を通って、図中太線矢印で示したように、上側からギヤボックス９及び駆動用モータ８に供給される。冷却及び潤滑に供されたオイルは、そのままオイル溜まり部１２に落下する。 With the above configuration, the oil sucked up by the oil pump 6 from the suction unit 3 arranged in the oil reservoir 12 passes through the supply oil passage 7 and is geared from above as shown by the thick arrow in the figure. It is supplied to the box 9 and the drive motor 8. The oil used for cooling and lubrication falls into the oil sump portion 12 as it is.
　図３は、図２のＩＩＩ−ＩＩＩ線に沿った断面図である。 FIG. 3 is a cross-sectional view taken along the line III-III of FIG.
　図３に示す通り、油路切り替え部２は、駆動用モータ８の回転軸（つまりロータシャフト８Ｃ）の直下から、駆動用モータ８の回転軸と直交する方向にオフセットして配置されている。駆動用モータ８やギヤボックス９のように円筒形状の車載装置の場合、油路切り替え部２を車載装置の回転軸の直下に配置すると、上下方向の寸法が大きくなり、レイアウトの自由度が低くなる。しかし、図３のようにオフセットして配置することでレイアウトの自由度が高まる。 As shown in FIG. 3, the oil passage switching portion 2 is arranged offset from directly below the rotation axis of the drive motor 8 (that is, the rotor shaft 8C) in a direction orthogonal to the rotation axis of the drive motor 8. In the case of a cylindrical in-vehicle device such as a drive motor 8 or a gear box 9, if the oil passage switching portion 2 is arranged directly under the rotation axis of the in-vehicle device, the vertical dimension becomes large and the degree of freedom in layout is low. Become. However, the degree of freedom in layout is increased by arranging them at offset as shown in FIG.
　また、吸入部３Ａと吸入部３Ｂは、車両の左右方向に相対するよう配置されている。これにより、例えば発進時または減速時に車体の傾き及び加速度の作用によって油面が傾いたとしても、いずれかの吸入部３からオイルを吸い上げることができる。 Further, the suction unit 3A and the suction unit 3B are arranged so as to face each other in the left-right direction of the vehicle. As a result, even if the oil level is tilted due to the tilt of the vehicle body and the action of acceleration when starting or decelerating, oil can be sucked up from any of the suction units 3.
　［油路切り替え部の構成］
　図４は、油路切り替え部２の分解図である。油路切り替え部２は、第１ケース２１と、第２ケース２２と、円環状の可動子２３とからなる。 [Structure of oil passage switching part]
FIG. 4 is an exploded view of the oil passage switching portion 2. The oil passage switching portion 2 includes a first case 21, a second case 22, and an annular mover 23.
　第１ケース２１は第２油路５が接続される接続口２１Ａを上面に備える。第２ケース２２には、２本の第１油路４を介して２つの吸入部３が接続される。 The first case 21 is provided with a connection port 21A to which the second oil passage 5 is connected on the upper surface. Two suction portions 3 are connected to the second case 22 via two first oil passages 4.
　また、第１ケース２１は、第２ケース２２との接続面に、可動子２３を収容する円筒形状の凹部（以下、これを収容部２１Ｂという）を備える。また、収容部２１Ｂの底面にはポンプ側油孔２１Ｄが開口している。接続口２１Ａとポンプ側油孔２１Ｄは第１ケース２１の内部に形成された第４油路２１Ｅでつながっている。収容部２１Ｂの壁面は、可動子２３が転動する転動面２１Ｃとして機能する。 Further, the first case 21 is provided with a cylindrical recess (hereinafter, referred to as a housing portion 21B) for accommodating the mover 23 on the connecting surface with the second case 22. Further, a pump-side oil hole 21D is opened on the bottom surface of the accommodating portion 21B. The connection port 21A and the pump-side oil hole 21D are connected by a fourth oil passage 21E formed inside the first case 21. The wall surface of the accommodating portion 21B functions as a rolling surface 21C on which the mover 23 rolls.
　第１ケース２１と第２ケース２２は、収容部２１Ｂに可動子２３を収容した状態で、収容部２１Ｂへのオイルの浸入を防ぐためのシール部材（図示せず）を介してボルト（図示せず）により締結される。なお、第１ケース２１と第２ケース２２が締結された状態で、収容部２１Ｂの底面と可動子２３の後端面２３Ｄとの間、および第２ケース２２の第１ケース２１側の面と可動子２３の前端面２３Ａとの間には、例えば数十［μｍ］から百［μｍ］程度の僅かな隙間を設ける。これは、可動子２３が転動面２１Ｃに沿って自由に移動できるようにするためである。 In the first case 21 and the second case 22, in a state where the mover 23 is accommodated in the accommodating portion 21B, bolts (not shown) are used via a seal member (not shown) for preventing oil from entering the accommodating portion 21B. Is concluded by. In the state where the first case 21 and the second case 22 are fastened, the bottom surface of the accommodating portion 21B and the rear end surface 23D of the mover 23 are movable, and the surface of the second case 22 on the first case 21 side is movable. A slight gap of, for example, several tens [μm] to one hundred [μm] is provided between the child 23 and the front end surface 23A. This is to allow the mover 23 to move freely along the rolling surface 21C.
　図５、図６は、収容部２１Ｂ内での可動子２３の動きを説明するための図である。図５は加速度が作用していない状態を示し、図６は加速度が作用している状態を示す。なお、本説明における「加速度が作用していない状態」とは、車両が水平状態であり、かつ車両が加減速する際の前後加速度および車両が旋回する際の横加速度が作用していない状態のことをいう。 5 and 6 are diagrams for explaining the movement of the mover 23 in the accommodating portion 21B. FIG. 5 shows a state in which acceleration is not acting, and FIG. 6 shows a state in which acceleration is acting. The "state in which acceleration is not acting" in this description is a state in which the vehicle is in a horizontal state and the front-rear acceleration when the vehicle accelerates or decelerates and the lateral acceleration when the vehicle turns are not acting. Say that.
　加速度が作用していない状態では、図５に示す通り、可動子２３は転動面２１Ｃの最下部に位置する。そして、加速度が作用すると、図６に示す通り、可動子２３が転動面２１Ｃに沿って加速度の作用方向とは反対方向に転がる。いずれの状態でも、ポンプ側油孔２１Ｄは可動子２３の内周側の空間と連通している。 In the state where the acceleration is not acting, the mover 23 is located at the lowermost part of the rolling surface 21C as shown in FIG. Then, when the acceleration acts, as shown in FIG. 6, the mover 23 rolls along the rolling surface 21C in the direction opposite to the direction in which the acceleration acts. In either state, the pump-side oil hole 21D communicates with the space on the inner peripheral side of the mover 23.
　図７は、第２ケース２２の構造を説明するための図である。接続面２２Ｅが第１ケース２１と対向する面である。第２ケース２２の一方の側面には、第１油路４Ａが接続される吸入部側接続口２２Ａが設けられ、当該側面と対向する他方の側面には、第１油路４Ｂが接続される吸入部側接続口２２Ｂが設けられている。 FIG. 7 is a diagram for explaining the structure of the second case 22. The connection surface 22E is a surface facing the first case 21. A suction portion side connection port 22A to which the first oil passage 4A is connected is provided on one side surface of the second case 22, and the first oil passage 4B is connected to the other side surface facing the side surface. The suction unit side connection port 22B is provided.
　接続面２２Ｅには、吸入部側接続口２２Ａの方向に凸な三日月形状の吸入部側油孔２２Ｃと、吸入部側接続口２２Ｂの方向に凸な三日月形状の吸入部側油孔２２Ｄと、対向するように設けられている。吸入部側油孔２２Ｃは吸入部側接続口２２Ａと、吸入部側油孔２２Ｄは吸入部側接続口２２Ｂと、それぞれ第２ケース２２の内部に設けた第３油路２２Ｆ及び２２Ｇでつながっている。 The connection surface 22E has a crescent-shaped suction portion-side oil hole 22C that is convex in the direction of the suction portion-side connection port 22A, and a crescent-shaped suction portion-side oil hole 22D that is convex in the direction of the suction portion-side connection port 22B. It is provided so as to face each other. The suction part side oil hole 22C is connected to the suction part side connection port 22A, and the suction part side oil hole 22D is connected to the suction part side connection port 22B by the third oil passages 22F and 22G provided inside the second case 22, respectively. There is.
　図８、図９は、２つの吸入部側油孔２２Ｃ、２２Ｄと可動子２３との位置関係を説明するための図である。図８は加速度が作用していない状態を示し、図９は加速度が作用している状態を示す。 8 and 9 are diagrams for explaining the positional relationship between the two suction unit side oil holes 22C and 22D and the mover 23. FIG. 8 shows a state in which acceleration is not acting, and FIG. 9 shows a state in which acceleration is acting.
　２つの吸入部側油孔２２Ｃ、２２Ｄは、加速度が作用していない状態における可動子２３の中心を通って上下方向に伸びる中心線Ｃを挟んで対称の位置にある。そして、加速度が作用していない状態では、図８に示す通り、吸入部側油孔２２Ｃ、２２Ｄはそれぞれ開口部の略半分が可動子２３により塞がれる。加速度が作用して可動子２３が移動すると、図９に示す通り、一方の吸入部側油孔２２Ｃの開口面積は広がり、他方の吸入部側油孔２２Ｄは全体が可動子２３により塞がれる。もちろん、作用する加速度の大きさによっては、図８の状態と図９の状態の間の状態になることもある。 The two suction portion side oil holes 22C and 22D are at symmetrical positions with respect to the center line C extending in the vertical direction through the center of the mover 23 in a state where acceleration is not acting. Then, in a state where acceleration is not acting, as shown in FIG. 8, approximately half of the openings of the suction portion side oil holes 22C and 22D are closed by the mover 23, respectively. When the mover 23 moves due to the action of acceleration, as shown in FIG. 9, the opening area of one suction portion side oil hole 22C expands, and the other suction portion side oil hole 22D is completely closed by the mover 23. .. Of course, depending on the magnitude of the acting acceleration, the state may be between the state shown in FIG. 8 and the state shown in FIG.
　上述した油路切り替え部２において、吸入部側油孔２２Ｃ、２２Ｄの開口面積や転動面２１Ｃの曲率等は、適用する車載装置が必要とするオイル循環量、オイルポンプ６の能力、オイル溜まり部１２の寸法及び油面高さ等に応じて適宜設定する。ただし、加速度の作用によっていずれかの吸入部３が空気中に露出する程度に油面が傾いたときに、露出した吸入部３とつながっている吸入部側油孔２２Ｄが可動子２３により塞がれるようにする必要がある。 In the oil passage switching portion 2 described above, the opening areas of the oil holes 22C and 22D on the suction portion side, the curvature of the rolling surface 21C, and the like are determined by the amount of oil circulation required by the in-vehicle device to be applied, the capacity of the oil pump 6, and the oil pool. It is appropriately set according to the dimensions of the portion 12, the oil level height, and the like. However, when the oil level is tilted to the extent that one of the suction parts 3 is exposed to the air due to the action of acceleration, the suction part side oil hole 22D connected to the exposed suction part 3 is blocked by the mover 23. Need to be.
　［油路切り替え動作］
　上述した構成の油路切り替え部２による油路切り替え動作について説明する。 [Oil channel switching operation]
The oil passage switching operation by the oil passage switching unit 2 having the above-described configuration will be described.
　図２に示した構成では、車両に前後方向の加速度が作用すると、いずれか一方の吸入部３が空気中に露出するおそれがある。そこで、油路切り替え部２を、可動子２３が車両の前後方向の加速度に応じて移動する向きで配置する。なお、旋回時における横加速度が作用しても、２つの吸入部３は空気中に露出しないように油面高さを設定するものとする。 In the configuration shown in FIG. 2, when acceleration in the front-rear direction acts on the vehicle, one of the suction portions 3 may be exposed to the air. Therefore, the oil passage switching portion 2 is arranged in a direction in which the mover 23 moves according to the acceleration in the front-rear direction of the vehicle. It is assumed that the oil level height is set so that the two suction portions 3 are not exposed to the air even if the lateral acceleration during turning acts.
　複数の吸入部を備える構成において、加速度の作用によって油面が傾き、いずれかの吸入部が空気中に露出し、露出した吸入部が空気を吸い込む状態が続くと、油路内の負圧を維持できなくなり、やがて露出していない方の吸入部からもオイルを吸い込むことができなくなるという問題がある。しかし、本実施形態では、油路切り替え部２が油路切り替え動作を行なうことにより、この問題を解決している。具体的な油路切り替え動作は以下の通りである。 In a configuration including a plurality of suction parts, when the oil level is tilted by the action of acceleration, one of the suction parts is exposed to the air, and the exposed suction part continues to suck air, the negative pressure in the oil passage is released. There is a problem that it cannot be maintained and eventually it becomes impossible to suck oil from the suction part that is not exposed. However, in the present embodiment, this problem is solved by the oil passage switching unit 2 performing the oil passage switching operation. The specific oil passage switching operation is as follows.
　加速度が作用していない状態では、可動子２３は図５及び図８に示した状態になる。すなわち、可動子２３の中央の空間がポンプ側油孔２１Ｄを介して第１ケース２１上面の接続口２１Ａと連通し、かつ、可動子２３の中央の空間が２つの吸入部側油孔２２Ｃ、２２Ｄと連通した状態になる。これにより、２つの吸入部３Ａ、３Ｂの両方からオイルを吸い上げられる。 In the state where the acceleration is not acting, the mover 23 is in the state shown in FIGS. 5 and 8. That is, the central space of the mover 23 communicates with the connection port 21A on the upper surface of the first case 21 via the pump side oil hole 21D, and the central space of the mover 23 communicates with the two suction portion side oil holes 22C. It will be in a state of communicating with 22D. As a result, oil is sucked up from both the two suction portions 3A and 3B.
　一方、急減速による加速度（図６の太線矢印方向の加速度）が作用して、オイル溜まり部１２の油面が傾き、吸入部３Ｂが空気中に露出する場合を考える。この場合、可動子２３は図６に示す通り加速度に応じて転動面２１Ｃを転がり、図９に示す通り吸入部３Ｂとつながる吸入部側油孔２２Ｄを塞ぎ、吸入部３Ａとつながる吸入部側油孔２２Ｃを開放する。これにより、吸入部３Ｂから空気を吸い込むことを防止できる。なお、上述した通り可動子２３と第２ケース２２との間にはごく僅かな隙間があるので、厳密にいえば吸入部側油孔２２Ｄは完全には塞がれておらず、この隙間を微量の空気が通過することになる。しかし、オイルポンプ６が吸い上げるオイル量に対してごく僅かな量なので問題はない。 On the other hand, consider a case where the acceleration due to sudden deceleration (acceleration in the direction of the thick arrow in FIG. 6) acts, the oil level of the oil pool portion 12 tilts, and the suction portion 3B is exposed to the air. In this case, the mover 23 rolls on the rolling surface 21C according to the acceleration as shown in FIG. 6, closes the suction portion side oil hole 22D connected to the suction portion 3B as shown in FIG. 9, and closes the suction portion side oil hole 22D connected to the suction portion 3A. The oil hole 22C is opened. As a result, it is possible to prevent sucking air from the suction unit 3B. As described above, since there is a very small gap between the mover 23 and the second case 22, strictly speaking, the suction portion side oil hole 22D is not completely closed, and this gap is closed. A small amount of air will pass through. However, there is no problem because the amount is very small with respect to the amount of oil sucked up by the oil pump 6.
　以上の通り本実施形態では、オイルポンプ６によってオイルが供給される車載装置８、９内の下方にあるオイル溜まり部１２に配置される複数の吸入部３と、複数の第１油路４を介して複数の吸入部３のそれぞれと接続され、かつ第２油路５を介してオイルポンプ６と接続される油路切り替え部２と、を備えるオイル吸入装置１が提供される。このオイル吸入装置１では、少なくとも一対の吸入部３が、車両の前後方向または左右方向に相対するように配置され、油路切り替え部２が、各吸入部３から第２油路５までの各流路について、オイルの流通が許容される連通状態と、流通が遮断される遮断状態と、を油路切り替え部２に作用する加速度に応じて切り替える。この油路切り替え部２を備えることで、複数の吸入部３のうち加速度が作用することで空気中に露出するものについては流路を遮断して、空気の吸い込みを防止することができる。そして、油路切り替え部２はオイルポンプ６と複数の吸入部３とに配管を介して接続されていればよいので、車載装置内に配置するにあたり、レイアウトの自由度が高い。 As described above, in the present embodiment, the plurality of suction portions 3 arranged in the oil reservoir portion 12 below the in-vehicle devices 8 and 9 to which the oil is supplied by the oil pump 6 and the plurality of first oil passages 4 are provided. An oil suction device 1 is provided that includes an oil passage switching unit 2 that is connected to each of the plurality of suction units 3 via a second oil passage 5 and is connected to an oil pump 6 via a second oil passage 5. In this oil suction device 1, at least a pair of suction portions 3 are arranged so as to face each other in the front-rear direction or the left-right direction of the vehicle, and oil passage switching portions 2 are provided from each suction portion 3 to the second oil passage 5. Regarding the flow path, the communication state in which the oil flow is allowed and the cutoff state in which the flow is cut off are switched according to the acceleration acting on the oil passage switching unit 2. By providing the oil passage switching portion 2, it is possible to block the flow path of the plurality of suction portions 3 that are exposed to the air due to the action of acceleration to prevent the suction of air. Since the oil passage switching unit 2 only needs to be connected to the oil pump 6 and the plurality of suction units 3 via pipes, there is a high degree of freedom in layout when arranging the oil passage switching unit 2 in the in-vehicle device.
　本実施形態では、車載装置が回転体を備えるパワートレイン部品であって、油路切り替え部２が、回転体の回転軸の直下から回転軸と直交する方向にオフセットした位置に配置される。具体的には、パワートレイン部品が、駆動用モータ８とギヤボックス９とが同軸上に接続されたものであり、油路切り替え部２が、駆動用モータ８とギヤボックス９との間であって、駆動用モータ８の回転軸の直下から回転方向にオフセットした位置に配置される。回転体を備える車載装置は、それを収容するケースの上下方向の寸法が回転体の直径より大きくなければならない。一方、車載レイアウトの自由度を高めるためには、ケースの上下寸法ができるだけ小さいことが望まれる。駆動用モータ８とギヤボックス９とを同軸上に一体化したものは、車両の床下に配置するので、特に上下寸法を小さくすることが望まれる。その点、本実施形態のオイル吸入装置１は、油路切り替え部２を上記の通り車載装置の直下からオフセットした位置に配置できるので、車載装置の上下方向の寸法をより小さくすることができる。 In the present embodiment, the in-vehicle device is a power train component including a rotating body, and the oil passage switching portion 2 is arranged at a position offset from directly below the rotating body of the rotating body in a direction orthogonal to the rotating axis. Specifically, the power train component is one in which the drive motor 8 and the gear box 9 are coaxially connected, and the oil passage switching portion 2 is between the drive motor 8 and the gear box 9. Therefore, it is arranged at a position offset in the rotation direction from directly below the rotation axis of the drive motor 8. An in-vehicle device including a rotating body must have a case that accommodates the rotating body in a vertical dimension larger than the diameter of the rotating body. On the other hand, in order to increase the degree of freedom in in-vehicle layout, it is desired that the vertical dimension of the case is as small as possible. Since the drive motor 8 and the gearbox 9 that are coaxially integrated are arranged under the floor of the vehicle, it is particularly desired to reduce the vertical dimension. In that respect, in the oil suction device 1 of the present embodiment, since the oil passage switching portion 2 can be arranged at a position offset from directly below the vehicle-mounted device as described above, the vertical dimension of the vehicle-mounted device can be made smaller.
　本実施形態では、油路切り替え部２は、加速度を受けると移動する可動子２３を備え、可動子２３が各流路を開閉することにより連通状態と遮断状態とを切り替える。これにより、油路を開閉するためのバルブ機構、当該バルブ機構を作動させるための動力、コントローラ等といった複雑な部品を用いることなく、油路の切り替えを行なうことができる。 In the present embodiment, the oil passage switching unit 2 includes a mover 23 that moves when it receives acceleration, and the mover 23 opens and closes each flow path to switch between a communication state and a cutoff state. As a result, the oil passage can be switched without using complicated parts such as a valve mechanism for opening and closing the oil passage, a power for operating the valve mechanism, a controller, and the like.
　本実施形態では、油路切り替え部２は、円環状の可動子２３と、複数の吸入部３Ａ−３Ｂが接続される第２ケース（吸入部側ケース）２２と、オイルポンプ６が接続される第１ケース（ポンプ側ケース）２１と、を備える。第２ケース２２と第１ケース２１とが接続されることで内部に形成された収容部２１Ｂに可動子２３が回転可能な状態で収容される。第２ケース２２は、複数の第１油路４Ａ−４Ｂと収容部２１Ｂとを連通する複数の油路、つまり吸入部側接続口２２Ａ、２２Ｂから吸入部側油孔２２Ｃ、２２Ｄまでの第３油路２２Ｆ、２２Ｇを備える。第１ケース２１は、第２油路５と収容部２１Ｂとを連通する油路、つまり接続口２１Ａからポンプ側油孔２１Ｄまでの第４油路２１Ｅを備える。収容部２１Ｂは、可動子２３が転動可能な転動面２１Ｃを備える。油路切り替え部２は、加速度を受けない状態では、可動子２３が転動面２１Ｃの下端に位置して、すべての第３油路２２Ｆ、２２Ｇ及び第４油路２１Ｅを開放する状態となり、加速度を受ける状態では、可動子２３が転動面２１Ｃを転がり上がって、加速度が作用することで空気中に露出する吸入部３につながる第３油路２２Ｇを遮断し、空気中に露出しない吸入部３につながる第３油路２２Ｆ及び第４油路２１Ｅを開放する状態となる。 In the present embodiment, the oil passage switching portion 2 is connected to the annular mover 23, the second case (suction portion side case) 22 to which the plurality of suction portions 3A-3B are connected, and the oil pump 6. A first case (pump side case) 21 is provided. By connecting the second case 22 and the first case 21, the mover 23 is rotatably accommodated in the accommodating portion 21B formed inside. The second case 22 is a third of a plurality of oil passages communicating the plurality of first oil passages 4A-4B and the accommodating portion 21B, that is, from the suction portion side connection ports 22A and 22B to the suction portion side oil holes 22C and 22D. It has oil passages 22F and 22G. The first case 21 includes an oil passage that connects the second oil passage 5 and the accommodating portion 21B, that is, a fourth oil passage 21E from the connection port 21A to the pump-side oil hole 21D. The accommodating portion 21B includes a rolling surface 21C on which the mover 23 can roll. In the oil passage switching portion 2, when the actuator 23 is not subjected to acceleration, the mover 23 is located at the lower end of the rolling surface 21C, and all the third oil passages 22F, 22G and the fourth oil passage 21E are opened. In the state of receiving acceleration, the mover 23 rolls up on the rolling surface 21C, shuts off the third oil passage 22G connected to the suction portion 3 exposed to the air due to the action of the acceleration, and sucks not exposed to the air. The third oil passage 22F and the fourth oil passage 21E connected to the portion 3 are opened.
　これにより、車両に作用する加速度を利用して可動子を移動させ、加速度がかかることで空気中に露出する吸入部３からオイルポンプ６への油路遮断し、空気中に露出しない吸入部３からのみオイルを吸い上げることができる。 As a result, the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air to the oil pump 6 is blocked by the acceleration, and the suction unit 3 is not exposed to the air. Oil can only be sucked up from.
　なお、車載装置が駆動用モータ８とギヤボックス９とを接続したものである場合について説明したが、本実施形態は、車載装置が駆動用モータ８のみの場合、またはギヤボックス９のみの場合でも同様に適用可能である。いずれの場合でも、上下方向の寸法をより小さくしたいという課題は駆動用モータ８とギヤボックス９とが一体化されたものの場合と同様である。そして、油路切り替え部２を駆動用モータ８またはギヤボックス９の回転軸の直下から、回転軸と直交する方向にオフセットして配置することで、高さ方向の寸法の増大を抑制し、レイアウトの自由度を高めることができる。 Although the case where the in-vehicle device is connected to the drive motor 8 and the gear box 9 has been described, in the present embodiment, even when the in-vehicle device is only the drive motor 8 or only the gear box 9. It is applicable as well. In any case, the problem of making the vertical dimension smaller is the same as in the case where the drive motor 8 and the gearbox 9 are integrated. Then, by arranging the oil passage switching portion 2 offset in the direction orthogonal to the rotation axis from directly below the rotation axis of the drive motor 8 or the gearbox 9, the increase in the dimension in the height direction is suppressed and the layout is performed. The degree of freedom can be increased.
　［油路切り替え部の変形例］
　ここで、油路切り替え部２の変形例について説明する。本変形例も上記実施形態と脅応用に本願発明の範囲に属するものである。 [Modification example of oil passage switching part]
Here, a modified example of the oil passage switching portion 2 will be described. This modification also belongs to the scope of the present invention in the above-described embodiment and threat application.
　図１０は、変形例にかかる可動子２３と第１ケース２１を示す図である。その他の構成は基本的には上述した実施形態と同様である。 FIG. 10 is a diagram showing a mover 23 and a first case 21 according to a modified example. Other configurations are basically the same as those in the above-described embodiment.
　本変形例の可動子２３は、上記実施形態の可動子２３と同様の円環状の部品と、この部品にアーム部材２４を介して取り付けられる円板状の軸部材２５とを備える。一方、本変形例の第１ケース２１は、可動子２３を収容する凹状の収容部２１Ｂに、可動子２３の軸部材２５を回転可能に支持する支持部２６を備える。これにより、可動子２３は作用する加速度に応じて収容部２１Ｂ内で振り子運動をすることができる。すなわち、上記実施形態では可動子２３が転動面２１Ｃを転がることにより吸入部側油孔２２Ｃ、２２Ｄを開放または遮断するが、本変形例では可動子２３が振り子運動をすることで同様の作用を果たす。 The mover 23 of this modification includes an annular part similar to the mover 23 of the above embodiment, and a disk-shaped shaft member 25 attached to this part via an arm member 24. On the other hand, in the first case 21 of this modification, the concave accommodating portion 21B accommodating the mover 23 is provided with a support portion 26 that rotatably supports the shaft member 25 of the mover 23. As a result, the mover 23 can make a pendulum movement in the accommodating portion 21B according to the acting acceleration. That is, in the above embodiment, the mover 23 opens or shuts off the suction portion side oil holes 22C and 22D by rolling on the rolling surface 21C, but in this modified example, the mover 23 performs a pendulum movement to perform the same effect. Fulfill.
　以上の通り、本変形例では、油路切り替え部２は可動子２３と、複数の吸入部３Ａ、３Ｂが接続される第２ケース（吸入部側ケース）２２と、オイルポンプ６が接続される第１ケース（ポンプ側ケース）２１と、を備える。第２ケース２２と第１ケース２１とが接続されることで内部に形成される収容部２１Ｂに可動子２３が収容される。第２ケース２２は、複数の第１油路４Ａ及び４Ｂと収容部２１Ｂとを連通する複数の第３油路２２Ｆ、２２Ｇを備える。第１ケース２１は、第２油路５と収容部２１Ｂとを連通する第４油路２１Ｅを備える。可動子２３は、第２ケース２２または第１ケース２１のいずれかに揺動可能に固定され、加速度を受けない状態では、可動子２３がすべての第３油路２２Ｆ、２２Ｇ及び第４油路２１Ｅを開放する状態となり、加速度を受ける状態では、可動子２３が移動して、加速度が作用することで空気中に露出する吸入部３につながる第３油路２２Ｇを遮断し、空気中に露出しない吸入部３につながる第３油路２２Ｆ及び第４油路２１Ｅを開放する状態となる、オイル吸入装置。 As described above, in the present modification, the oil passage switching portion 2 is connected to the mover 23, the second case (suction portion side case) 22 to which the plurality of suction portions 3A and 3B are connected, and the oil pump 6. A first case (pump side case) 21 is provided. The mover 23 is accommodated in the accommodating portion 21B formed inside by connecting the second case 22 and the first case 21. The second case 22 includes a plurality of third oil passages 22F and 22G that communicate the plurality of first oil passages 4A and 4B with the accommodating portion 21B. The first case 21 includes a fourth oil passage 21E that connects the second oil passage 5 and the accommodating portion 21B. The mover 23 is swingably fixed to either the second case 22 or the first case 21, and in a state where the mover 23 is not subjected to acceleration, the mover 23 is all the third oil passages 22F, 22G and the fourth oil passage. In the state where the 21E is opened and the acceleration is received, the mover 23 moves to block the third oil passage 22G connected to the suction portion 3 exposed to the air by the action of the acceleration, and is exposed to the air. An oil suction device that opens the third oil passage 22F and the fourth oil passage 21E connected to the suction portion 3.
　これにより、上記実施形態と同様に、車両に作用する加速度を利用して可動子を移動させ、加速度がかかることで空気中に露出する吸入部３からオイルポンプ６への油路を遮断し、空気中に露出しない吸入部３からのみオイルを吸い上げることができる。 As a result, as in the above embodiment, the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air to the oil pump 6 due to the acceleration is cut off. Oil can be sucked up only from the suction unit 3 which is not exposed to the air.
　［第２実施形態］
　次に、本発明の第２実施形態について図１１から図１８を参照して説明する。本実施形態にかかるオイル吸入装置は、搭載する車載装置及び搭載位置については第１実施形態と同様であるが、油路切り替え部２の構造が相違する。以下、相違点を中心に説明する。 [Second Embodiment]
Next, the second embodiment of the present invention will be described with reference to FIGS. 11 to 18. The oil suction device according to the present embodiment is the same as the first embodiment in terms of the on-vehicle device to be mounted and the mounting position, but the structure of the oil passage switching portion 2 is different. Hereinafter, the differences will be mainly described.
　［オイル吸入装置の概略構成］
　図１１は、本実施形態に係るオイル吸入装置１の概略構成図である。 [Outline configuration of oil suction device]
FIG. 11 is a schematic configuration diagram of the oil suction device 1 according to the present embodiment.
　オイル吸入装置１は、オイルポンプ６によってオイルが供給される車載装置内の下方にあるオイル溜まり部１２に配置される４つの吸入部３Ａ−３Ｄを備える。ここでいう車載装置とは、例えば電動車の駆動用モータ、ギヤボックス、または駆動用モータとギヤボックスとが接続されて一体化したものである。オイル溜まり部１２は、これら車載装置のケース内下方に位置する。 The oil suction device 1 includes four suction sections 3A-3D arranged in the oil reservoir section 12 below the vehicle-mounted device to which the oil is supplied by the oil pump 6. The in-vehicle device referred to here is, for example, a drive motor, a gearbox, or a drive motor and a gearbox of an electric vehicle connected and integrated. The oil sump portion 12 is located below the inside of the case of these in-vehicle devices.
　また、オイル吸入装置１は、４本の第１油路４Ａ−４Ｄを介して４つの吸入部３Ａ−３Ｄのそれぞれと接続され、かつ第２油路５を介してオイルポンプ６と接続される油路切り替え部２とを備える。油路切り替え部２の具体的な構成については後述する。なお、オイル吸入装置１は４つの吸入部３Ａ、３Ｂと４本の第１油路４Ａ、４Ｂを備えるが、以下の説明において、区別する必要がない場合には吸入部３、第１油路４と称する。 Further, the oil suction device 1 is connected to each of the four suction portions 3A-3D via the four first oil passages 4A-4D, and is connected to the oil pump 6 via the second oil passage 5. It is provided with an oil passage switching unit 2. The specific configuration of the oil passage switching unit 2 will be described later. The oil suction device 1 includes four suction sections 3A and 3B and four first oil passages 4A and 4B. However, in the following description, if it is not necessary to distinguish between the suction sections 3A and 3B, the suction sections 3 and the first oil passages 1 It is called 4.
　吸入部３から吸い上げられたオイルは、油路切り替え部２、第２油路５を通ってオイルポンプ６に流入し、そこから供給油路７を介して車載装置に供給される。供給されたオイルは、潤滑及び冷却に供された後、オイル溜まり部に落下し、再び吸入部３から吸い上げられる。このようにしてオイルは循環する。 The oil sucked up from the suction unit 3 flows into the oil pump 6 through the oil passage switching unit 2 and the second oil passage 5, and is supplied from there to the in-vehicle device via the supply oil passage 7. After being subjected to lubrication and cooling, the supplied oil falls into the oil sump and is sucked up from the suction unit 3 again. In this way the oil circulates.
　［オイル吸入装置の配置］
　オイル吸入装置の配置については基本的には第１実施形態と同様である。ただし、４つの吸入部３はオイル溜まり部１２の四隅に配置される。 [Arrangement of oil suction device]
The arrangement of the oil suction device is basically the same as that of the first embodiment. However, the four suction portions 3 are arranged at the four corners of the oil sump portion 12.
　［油路切り替え部の構成］
　図１２は、油路切り替え部２の外形図である。図１３は図１２のＸＩＩＩ−ＸＩＩＩ線に沿った断面図である。 [Structure of oil passage switching part]
FIG. 12 is an outline view of the oil passage switching portion 2. FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG.
　油路切り替え部２は、車載状態で上側となる上側ケース３０と、下側となる下側ケース３１と、可動子３２とを備える。 The oil passage switching unit 2 includes an upper case 30 that is on the upper side in a vehicle-mounted state, a lower case 31 that is on the lower side, and a mover 32.
　上側ケース３０の略中央には、第２油路５が接続される接続口２１Ａが設けられている。下側ケース３１には、４つの吸入部３が接続されている。なお、上側ケース３０と下側ケース３１は、後述する収容部３０Ａへのオイルの浸入等を防ぐシール部材（図示せず）を介して、ボルト（図示せず）により締結される。 A connection port 21A to which the second oil passage 5 is connected is provided substantially in the center of the upper case 30. Four suction portions 3 are connected to the lower case 31. The upper case 30 and the lower case 31 are fastened with bolts (not shown) via a seal member (not shown) that prevents oil from entering the accommodating portion 30A, which will be described later.
　上側ケース３０の下側ケース３１と対向する面には凹状の収容部３０Ａが形成されており、ここに可動子３２が収容される。また、接続口２１Ａは上側ケース３０を貫通する第４油路３０Ｂを介して収容部３０Ａと連通している。 A concave accommodating portion 30A is formed on the surface of the upper case 30 facing the lower case 31, and the mover 32 is accommodated therein. Further, the connection port 21A communicates with the accommodating portion 30A via the fourth oil passage 30B penetrating the upper case 30.
　図１４は、下側ケース３１の構成図である。下側ケース３１の上面の中央から外周に向けての所定範囲には、他の範囲よりも上方向に突出する段部３３が形成されている。段部３３の中央寄りの範囲には、４つの略矩形の凹部３３Ａ−３３Ｄが設けられている。これら４つの凹部３３Ａ−３３Ｄは、所定のピッチで２行２列に配置されている。ここでいうピッチとは、隣り合う凹部間の間隔であり、例えば隣り合う各凹部３３Ａ−３３Ｄの中心点間距離とする。 FIG. 14 is a configuration diagram of the lower case 31. A step portion 33 is formed in a predetermined range from the center of the upper surface of the lower case 31 toward the outer circumference so as to project upward from the other ranges. Four substantially rectangular recesses 33A-33D are provided in the range near the center of the step 33. These four recesses 33A-33D are arranged in 2 rows and 2 columns at a predetermined pitch. The pitch referred to here is the distance between adjacent recesses, and is, for example, the distance between the center points of the adjacent recesses 33A-33D.
　凹部３３Ａ−３３Ｄの深さは、例えば、凹部３３Ａ−３３Ｄの底面が凹部３３Ａ−３３Ｄ以外の部分と同じ高さになるよう設定する。なお、段部３３は、下側ケース３１と一体として形成してもよいし、別体として形成してから下側ケース３１に取り付けてもよい。別体として形成する場合には、板状部材に凹部３３Ａ−３３Ｄに相当する４つの貫通孔を設ければよい。 The depth of the recess 33A-33D is set so that, for example, the bottom surface of the recess 33A-33D is at the same height as the portion other than the recess 33A-33D. The step portion 33 may be formed integrally with the lower case 31, or may be formed as a separate body and then attached to the lower case 31. When it is formed as a separate body, the plate-shaped member may be provided with four through holes corresponding to the recesses 33A-33D.
　下側ケース３１の上面、より詳細には凹部３３Ａ−３３Ｄのそれぞれの底面の、下側ケース３１の中央寄りの位置には、円筒形状の縦穴３４Ａ−３４Ｄが開口している。下側ケース３１の側面には、第１油路４Ａ−４Ｄが接続される吸入部側接続口３１Ａ−３１Ｄが設けられている。吸入部側接続口３１Ａ−３１Ｄのそれぞれから横穴３１Ｅ−３１Ｈが延びており、これらの横穴３１Ｅ−３１Ｈによって縦穴３４Ａ−３４Ｄと吸入部側接続口３１Ａ−３１Ｄとがそれぞれ連通している。すなわち、横穴３１Ｅ−３１Ｈと縦穴３４Ａ−３４Ｄと凹部３３Ａ−３３Ｄとが、複数の第１油路４Ａ−４Ｄと収容部３０Ａとを連通する複数の第３油路を構成する。 A cylindrical vertical hole 34A-34D is opened at a position near the center of the lower case 31 on the upper surface of the lower case 31, more specifically, on the bottom surface of each of the recesses 33A-33D. On the side surface of the lower case 31, a suction portion side connection port 31A-31D to which the first oil passage 4A-4D is connected is provided. Horizontal holes 31E-31H extend from each of the suction unit side connection ports 31A-31D, and the vertical holes 34A-34D and the suction unit side connection ports 31A-31D communicate with each other through these horizontal holes 31E-31H. That is, the horizontal holes 31E-31H, the vertical holes 34A-34D, and the recesses 33A-33D form a plurality of third oil passages that communicate the plurality of first oil passages 4A-4D and the accommodating portion 30A.
　図１５は、可動子３２の構成図である。可動子３２は、略矩形の台座部３２Ｅと、台座部３２Ｅから上方に伸びる壁部３２Ｆとを備える。 FIG. 15 is a configuration diagram of the mover 32. The mover 32 includes a substantially rectangular pedestal portion 32E and a wall portion 32F extending upward from the pedestal portion 32E.
　台座部３２Ｅには、台座部３２Ｅを上下方向に貫通する略円形の４つの油路孔３２Ａ−３２Ｄが、所定のピッチで２行２列に配置されている。ここでいうピッチとは、隣り合う油路孔３２Ａ−３２Ｄの間隔であり、例えば隣り合う油路孔３２Ａ−３２Ｄの中心点間距離とする。４つの油路孔３２Ａ−３２Ｄのピッチは、上述した４つの凹部３３Ａ−３３Ｄのピッチよりも小さい。油路孔３２Ａ−３２Ｄの直径は、適用する車載装置が必要とするオイル循環量、オイルポンプ６の能力等に応じて適宜設定する。 In the pedestal portion 32E, four substantially circular oil passage holes 32A-32D penetrating the pedestal portion 32E in the vertical direction are arranged in 2 rows and 2 columns at a predetermined pitch. The pitch referred to here is the distance between the adjacent oil passage holes 32A-32D, and is, for example, the distance between the center points of the adjacent oil passage holes 32A-32D. The pitch of the four oil passage holes 32A-32D is smaller than the pitch of the four recesses 33A-33D described above. The diameter of the oil passage holes 32A-32D is appropriately set according to the amount of oil circulation required by the in-vehicle device to be applied, the capacity of the oil pump 6, and the like.
　壁部３２Ｆは、４つの油路孔３２Ａ−３２Ｄを囲むように配置されている。壁部３２Ｆの内周壁は、２行２列に配置された油路孔３２Ａ−３２Ｄの外接線と重なり、当該内周壁の四隅は油路孔３２Ａ−３２Ｄの外周と重なる。壁部３２Ｆの高さは、図１３のように収容部３０Ａに収容したときに、壁部３２Ｆの上面と収容部３０Ａの上面との間に例えば数十［μｍ］から百［μｍ］程度の僅かな隙間が生じるように設定する。なお、壁部３２Ｆは、台座部３２Ｅと一体として形成してもよいし、別体として形成してから台座部３２Ｅに取り付けてもよい。 The wall portion 32F is arranged so as to surround the four oil passage holes 32A-32D. The inner peripheral wall of the wall portion 32F overlaps with the circumscribed lines of the oil passage holes 32A-32D arranged in 2 rows and 2 columns, and the four corners of the inner peripheral wall overlap with the outer circumference of the oil passage holes 32A-32D. The height of the wall portion 32F is, for example, about several tens [μm] to 100 [μm] between the upper surface of the wall portion 32F and the upper surface of the accommodating portion 30A when the wall portion 32F is accommodated in the accommodating portion 30A as shown in FIG. Set so that there is a slight gap. The wall portion 32F may be formed integrally with the pedestal portion 32E, or may be formed as a separate body and then attached to the pedestal portion 32E.
　上述した上側ケース３０、下側ケース３１及び可動子３２を図１３に示す通り組み立てると、可動子３２は下側ケース３１の段部３３の上面に沿って移動可能になる。 When the above-mentioned upper case 30, lower case 31 and mover 32 are assembled as shown in FIG. 13, the mover 32 can move along the upper surface of the step portion 33 of the lower case 31.
　［油路切り替え動作］
　上述した構成の油路切り替え部２による油路切り替え動作について説明する。 [Oil channel switching operation]
The oil passage switching operation by the oil passage switching unit 2 having the above-described configuration will be described.
　図１６から図１８は、加速度を受けた際の、可動子３２の下側ケース３１に対する動きを示す図である。より詳細には、図１６は加速度が作用しておらず可動子３２が段部３３の中央にある状態を示し、図１７は旋回による横加速度が作用した状態を示し、図１８は旋回による横加速度と加速による前後加速度が作用した状態を示している。なお、図１６から図１８において、図面の上方向が車両の進行方向、下方向が車両の後退方向である。 16 to 18 are diagrams showing the movement of the mover 32 with respect to the lower case 31 when it receives acceleration. More specifically, FIG. 16 shows a state in which acceleration is not acting and the mover 32 is in the center of the step 33, FIG. 17 shows a state in which lateral acceleration due to turning is applied, and FIG. 18 shows a state in which lateral acceleration due to turning is applied. It shows the state in which acceleration and front-back acceleration due to acceleration act. In FIGS. 16 to 18, the upward direction of the drawing is the traveling direction of the vehicle, and the downward direction is the backward direction of the vehicle.
　可動子３２が段部３３の中央にあるときは、図１６に示す通り、凹部３３Ａ−３３Ｄはそれぞれ油路孔３２Ａ−３２Ｄと対峙する部分、換言すると上方から見たときに油路孔３２Ａ−３２Ｄと重なる部分（図中の斜線を付した部分）が開口する。そして、第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃは、上方から見たときに壁部３２Ｆの内側に位置する。これにより、吸入部３Ａ−３Ｄから吸入されたオイルは、吸入部側接続口３１Ａ−３１Ｄ、縦穴３４Ａ−３４Ｄを通って凹部３３Ａ−３３Ｄに流入し、凹部３３Ａ−３３Ｄから上述した開口部分を通って壁部３２Ｆの内側に流入し、そこから第４油路３０Ｂを通ってオイルポンプ６に流入する。 When the mover 32 is in the center of the step 33, as shown in FIG. 16, the recesses 33A-33D are the portions facing the oil passage holes 32A-32D, in other words, the oil passage holes 32A- when viewed from above. The portion overlapping with 32D (the shaded portion in the figure) opens. The opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above. As a result, the oil sucked from the suction unit 3A-3D flows into the recess 33A-33D through the suction section side connection port 31A-31D and the vertical hole 34A-34D, and passes through the above-mentioned opening portion from the recess 33A-33D. It flows into the inside of the wall portion 32F, and then flows into the oil pump 6 through the fourth oil passage 30B.
　右旋回による横加速度が作用すると、図１７に示す通り、可動子３２は段部３３の上面に沿って左方向に移動する。その結果、右側に並ぶ凹部３３Ａ及び３３Ｄは台座部３２Ｅにより塞がれ、左側に並ぶ凹部３３Ｂ及び３３Ｃは、それぞれ油路孔３２Ｂ及び３２Ｃと対峙する部分、換言すると上方から見たときに油路孔３２Ｂ及び３２Ｃと重なる部分（図中の斜線を付した部分）が開口する。このとき、第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃは上方から見たときに壁部３２Ｆの内側に位置する。 When the lateral acceleration due to the right turn acts, the mover 32 moves to the left along the upper surface of the step 33 as shown in FIG. As a result, the recesses 33A and 33D lined up on the right side are closed by the pedestal portion 32E, and the recesses 33B and 33C lined up on the left side are the portions facing the oil passage holes 32B and 32C, respectively, in other words, the oil passage when viewed from above. The portion overlapping the holes 32B and 32C (the shaded portion in the figure) opens. At this time, the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above.
　上記の通り、右旋回による横加速度が作用したときには、吸入部３Ａ及び３Ｄから壁部３２Ｆの内側までの流路は遮断され、吸入部３Ｂ及び３Ｃから壁部３２Ｆの内側までの流路は開放された状態となる。つまり、吸入部３Ｂ及び３Ｃのみからオイルを吸い上げることとなる。このため、右旋回による横加速度が作用することによってオイル溜まり部１２内のオイルが左側に偏り、吸入部３Ａ及び３Ｄが空気中に露出したとしても、吸入部３Ａ及び３Ｄから空気を吸い込むことはない。 As described above, when the lateral acceleration due to right turning acts, the flow path from the suction parts 3A and 3D to the inside of the wall part 32F is blocked, and the flow path from the suction parts 3B and 3C to the inside of the wall part 32F is blocked. It will be in an open state. That is, the oil is sucked up only from the suction units 3B and 3C. Therefore, even if the oil in the oil sump portion 12 is biased to the left due to the lateral acceleration caused by turning to the right and the suction portions 3A and 3D are exposed to the air, the air is sucked from the suction portions 3A and 3D. There is no.
　右旋回による横加速度と加速による前後加速度の両方が作用すると、図１８に示す通り、可動子３２は段部３３の上面に沿って左斜め前方向に移動する。その結果、右側に並ぶ凹部３３Ａ及び３３Ｄと左後方の凹部３３Ｂは台座部３２Ｅにより塞がれ、左前方の凹部３３Ｃは、油路孔３２Ｃと対峙する部分、換言すると上方から見たときに油路孔３２Ｃと重なる部分（図中の斜線を付した部分）が開口する。このとき、第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃは上方から見たときに壁部３２Ｆの内側に位置する。 When both the lateral acceleration due to right turning and the front-back acceleration due to acceleration act, the mover 32 moves diagonally forward to the left along the upper surface of the step 33, as shown in FIG. As a result, the recesses 33A and 33D lined up on the right side and the recess 33B on the left rear are closed by the pedestal portion 32E, and the recess 33C on the left front is a portion facing the oil passage hole 32C, in other words, oil when viewed from above. A portion overlapping the road hole 32C (a portion shaded in the figure) opens. At this time, the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is located inside the wall portion 32F when viewed from above.
　上記の通り、右旋回による横加速度と加速による前後加速度が作用したときには、吸入部３Ａ、３Ｂ及び３Ｄから壁部３２Ｆの内側までの流路は遮断され、吸入部３Ｃから壁部３２Ｆの内側までの流路のみが開放された状態となる。つまり、吸入部３Ｃのみからオイルを吸い上げることとなる。このため、右旋回による横加速度及び加速による前後加速度が作用することによってオイル溜まり部１２内のオイルが左前方に偏り、吸入部３Ａ、３Ｂ及び３Ｄが空気中に露出したとしても、吸入部３Ａ、３Ｂ及び３Ｄから空気を吸い込むことはない。 As described above, when the lateral acceleration due to right turning and the front-back acceleration due to acceleration act, the flow path from the suction portions 3A, 3B and 3D to the inside of the wall portion 32F is blocked, and the flow path from the suction portion 3C to the inside of the wall portion 32F is blocked. Only the flow path up to is open. That is, the oil is sucked up only from the suction unit 3C. Therefore, even if the oil in the oil sump portion 12 is biased to the left front due to the lateral acceleration due to right turning and the front-rear acceleration due to acceleration, and the suction portions 3A, 3B, and 3D are exposed to the air, the suction portion is exposed. No air is inhaled from 3A, 3B and 3D.
　図１７または図１８に示した状態から、加速度が作用しない状態に戻ったとき、可動子３２は図１７または図１８に示した位置のままとなるが、開放されている油路からオイルを吸い上げることができるので問題ない。 When returning from the state shown in FIG. 17 or 18 to the state in which acceleration does not act, the mover 32 remains in the position shown in FIG. 17 or 18, but sucks oil from the open oil passage. There is no problem because it can be done.
　上記の通り、本実施形態の可動子３２は、車両に作用する加速度に応じて移動して、空気中に露出する吸入部３につながる油路を遮断し、他の吸入部につながる油路を開放する。これにより、オイルポンプ６は空気を吸い上げることがなくなる。 As described above, the mover 32 of the present embodiment moves according to the acceleration acting on the vehicle, blocks the oil passage connected to the suction portion 3 exposed to the air, and opens the oil passage connected to the other suction portion. Open. As a result, the oil pump 6 does not suck up air.
　なお、可動子３２が移動した場合に、壁部３２Ｆの上面が第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃを一部でも塞ぐことがないように、壁部３２Ｆの各部の寸法を設定する。これは以下の理由による。 When the mover 32 moves, the dimensions of each part of the wall portion 32F are adjusted so that the upper surface of the wall portion 32F does not block even a part of the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B. Set. This is due to the following reasons.
　オイルポンプ６が作動すると、その吸い込み力は可動子３２を吸い上げる方向に作用する。可動子３２が吸い上げられて台座部３２Ｅの下面と下側ケース３１の段部３３の上面との間に隙間が生じると、例えば図１８のように可動子３２が凹部３３Ａ、３３Ｂ及び３３Ｄを塞いでいても、吸入部側接続口３１Ａ、３１Ｂ及び３１Ｄと壁部３２Ｆの内側とが油路孔３２Ｃを介して連通する。隙間が小さければ、隙間を通って壁部３２Ｆの内側に流入する空気の量は全体の油量に対してごく微量なので問題にならない。そこで、油路孔３２Ａ−３２Ｄを囲む壁部３２Ｆを形成して、壁部３２Ｆの内側を油路孔３２Ａ−３２Ｄから第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃまでの油路とすることで、油路孔３２Ａ−３２Ｄから第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃまでの油路の通油抵抗の増大を抑制している。しかし、可動子３２が移動したときに壁部３２Ｆの上面が第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃの一部を塞ぐと、油路抵抗が増大して壁部３２Ｆの内側の負圧が増大してしまう。そして、増大した負圧によって可動子３２の下面と段部３３の上面との隙間が増大して、空気の吸い込み量が増大してしまう。そこで、壁部３２Ｆの内側の負圧の増大を抑制するために、可動子３２が移動した場合に、壁部３２Ｆの上面が第４油路３０Ｂの収容部３０Ａ側の開口部３０Ｃを一部でも塞ぐことがないようにする。 When the oil pump 6 operates, its suction force acts in the direction of sucking up the mover 32. When the mover 32 is sucked up and a gap is created between the lower surface of the pedestal portion 32E and the upper surface of the step portion 33 of the lower case 31, the mover 32 closes the recesses 33A, 33B and 33D as shown in FIG. Even so, the suction portion side connection ports 31A, 31B and 31D and the inside of the wall portion 32F communicate with each other through the oil passage hole 32C. If the gap is small, the amount of air flowing into the inside of the wall portion 32F through the gap is very small with respect to the total amount of oil, so there is no problem. Therefore, a wall portion 32F surrounding the oil passage holes 32A-32D is formed, and the inside of the wall portion 32F is formed with an oil passage from the oil passage hole 32A-32D to the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B. By doing so, an increase in oil passage resistance of the oil passage from the oil passage holes 32A-32D to the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B is suppressed. However, if the upper surface of the wall portion 32F closes a part of the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B when the mover 32 moves, the oil passage resistance increases and the inside of the wall portion 32F Negative pressure will increase. Then, the increased negative pressure increases the gap between the lower surface of the mover 32 and the upper surface of the step 33, and the amount of air sucked in increases. Therefore, in order to suppress the increase in the negative pressure inside the wall portion 32F, when the mover 32 moves, the upper surface of the wall portion 32F partially covers the opening 30C on the accommodating portion 30A side of the fourth oil passage 30B. But don't block it.
　以上のように本実施形態では、油路切り替え部２には複数の第１油路４Ａ−４Ｄと１本の第２油路５とが接続され、油路切り替え部２は、可動子３２と、車載状態で上側となる上側ケース３０と、車載状態で下側となる下側ケース３１と、を備える。上側ケース３０と下側ケース３１とが接続されることで内部に形成される収容部３０Ａに可動子３２が収容される。上側ケース３０は、第２油路５と収容部３０Ａとを連通する第４油路３０Ｂを備え、上側ケース３０の中央には第４油路３０Ｂの収容部３０Ａ側の開口部が開口する。下側ケース３１は、複数の第１油路４Ａ−４Ｄと収容部３０Ａとを連通する複数の第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄを備え、複数の第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄの収容部３０Ａ側の開口部が、車両の上下方向に直交する面である下側ケース３１の上面に、車両の前後方向及び左右方向に所定のピッチで配置される。可動子３２は、底面が平面の台座部（板状部材）３２Ｅと、台座部３２Ｅを車両の上下方向に貫通し、車両の前後方向及び左右方向に第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄの開口部のピッチより小さいピッチで配置される複数の油路孔（貫通孔）３２Ａ−３２Ｄと、複数の油路孔３２Ａ−３２Ｄを囲み台座部３２Ｅから車両の上方向に伸びて、第４油路４０Ｂの収容部３０Ａ側の開口部から複数の油路孔３２Ａ−３２Ｄまでの油路を形成する壁部３２Ｆと、を備える。可動子３２が収容部３０Ａの中央に位置するときは、すべての第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄ及び第４油路３０Ｂを開放された状態になる。車両に加速度が作用すると、可動子３２が加速度に応じて台座部３２Ｅ（つまり下側ケース３１の上面）に沿って移動して、加速度が作用することで空気中に露出する１または複数の吸入部３につながる第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄが遮断され、空気中に露出しない１または複数の吸入部３につながる第３油路３１Ｅ−３１Ｈ、３４Ａ−３４Ｄ、３３Ａ−３３Ｄと第４油路３０Ｂとが開放された状態になる。 As described above, in the present embodiment, the plurality of first oil passages 4A-4D and one second oil passage 5 are connected to the oil passage switching portion 2, and the oil passage switching portion 2 is connected to the mover 32. The upper case 30 is on the upper side in the vehicle-mounted state, and the lower case 31 is on the lower side in the vehicle-mounted state. The mover 32 is accommodated in the accommodating portion 30A formed inside by connecting the upper case 30 and the lower case 31. The upper case 30 includes a fourth oil passage 30B that connects the second oil passage 5 and the accommodating portion 30A, and an opening on the accommodating portion 30A side of the fourth oil passage 30B opens in the center of the upper case 30. The lower case 31 includes a plurality of third oil passages 31E-31H, 34A-34D, 33A-33D that communicate the plurality of first oil passages 4A-4D and the accommodating portion 30A, and the plurality of third oil passages 31E. The openings on the accommodating portion 30A side of −31H, 34A-34D, 33A-33D are on the upper surface of the lower case 31, which is a surface orthogonal to the vertical direction of the vehicle, at a predetermined pitch in the front-rear direction and the left-right direction of the vehicle. Be placed. The mover 32 penetrates the pedestal portion (plate-shaped member) 32E having a flat bottom surface and the pedestal portion 32E in the vertical direction of the vehicle, and the third oil passages 31E-31H and 34A-34D in the front-rear direction and the left-right direction of the vehicle. , A plurality of oil passage holes (through holes) 32A-32D arranged at a pitch smaller than the pitch of the openings of 33A-33D and a plurality of oil passage holes 32A-32D are surrounded and extend upward from the pedestal portion 32E. The fourth oil passage 40B is provided with a wall portion 32F forming an oil passage from the opening on the accommodating portion 30A side to the plurality of oil passage holes 32A-32D. When the mover 32 is located at the center of the accommodating portion 30A, all the third oil passages 31E-31H, 34A-34D, 33A-33D and the fourth oil passage 30B are opened. When acceleration acts on the vehicle, the mover 32 moves along the pedestal portion 32E (that is, the upper surface of the lower case 31) according to the acceleration, and one or more suctions exposed in the air due to the acceleration acting. Third oil passages 31E-31H, 34A-34D, 33A-33D connected to the part 3 are blocked, and the third oil passages 31E-31H, 34A-34D, 33A connected to one or more suction parts 3 not exposed to the air. -33D and the fourth oil passage 30B are in an open state.
　これにより、第１実施形態と同様に、車両に作用する加速度を利用して可動子を移動させ、加速度がかかることで空気中に露出する吸入部３からオイルポンプ６への油路遮断し、空気中に露出しない吸入部３からのみオイルを吸い上げることができる。そして、本実施形態の油路切り替え部２も第１実施形態と同様に、複数の吸入部３及びオイルポンプ６と配管を介して接続されていればよいので、車載装置内に配置するにあたり、レイアウトの自由度が高い。 As a result, as in the first embodiment, the mover is moved by using the acceleration acting on the vehicle, and the oil passage from the suction unit 3 exposed to the air due to the acceleration is shut off to the oil pump 6. Oil can be sucked up only from the suction unit 3 which is not exposed to the air. Further, as in the first embodiment, the oil passage switching unit 2 of the present embodiment may be connected to the plurality of suction units 3 and the oil pump 6 via piping, so that the oil passage switching unit 2 may be arranged in the in-vehicle device. High degree of layout freedom.
　本実施形態では、壁部３２Ｆは可動子３２が移動した場合でも収容部３０Ａ側の接続口と第４油路３０Ｂの前記収容部側の開口部全体が壁部３２Ｆの内周側に開口するように設けられている。これにより、吸入部３からオイルポンプ６までの油路の負圧が過剰に発達することがなくなるので、空気の吸い込み量の増大を抑制できる。 In the present embodiment, even when the mover 32 moves, the entire opening of the connection port on the accommodating portion 30A side and the opening on the accommodating portion side of the fourth oil passage 30B opens on the inner peripheral side of the wall portion 32F. It is provided as follows. As a result, the negative pressure in the oil passage from the suction unit 3 to the oil pump 6 is not excessively developed, so that an increase in the amount of air sucked can be suppressed.
　以上、本発明の実施形態について説明したが、上記実施形態は本発明の適用例の一部を示したに過ぎず、本発明の技術的範囲を上記実施形態の具体的構成に限定する趣旨ではない。 Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. do not have.

Claims (10)

  1. 　オイルポンプによってオイルが供給される車載装置内の下方にあるオイル溜まり部に配置される複数の吸入部と、
    　複数の第１油路を介して複数の前記吸入部のそれぞれと接続され、かつ第２油路を介して前記オイルポンプと接続される油路切り替え部と、
    を備えるオイル吸入装置において、
    　少なくとも一対の前記吸入部が、車両の前後方向または左右方向に相対するように配置され、
    　前記油路切り替え部が、各吸入部から前記第２油路までの各流路について、前記オイルの流通が許容される連通状態と、前記流通が遮断される遮断状態と、を前記油路切り替え部に作用する加速度に応じて切り替える、
    オイル吸入装置。     Multiple suction units located in the lower oil reservoir in the in-vehicle device where oil is supplied by the oil pump,
    An oil passage switching portion connected to each of the plurality of suction portions via the plurality of first oil passages and connected to the oil pump via the second oil passage.
    In an oil inhaler equipped with
    At least a pair of the suction portions are arranged so as to face each other in the front-rear direction or the left-right direction of the vehicle.
    The oil passage switching portion switches between a communication state in which the oil flow is allowed and a cutoff state in which the flow is blocked for each flow path from each suction portion to the second oil passage. Switch according to the acceleration acting on the part,
    Oil inhaler.
  2. 　請求項１に記載のオイル吸入装置において、
    　前記車載装置が回転体を備えるパワートレイン部品であって、
    　前記油路切り替え部が、前記回転体の回転軸の直下から前記回転軸と直交する方向にオフセットした位置に配置される、オイル吸入装置。     In the oil suction device according to claim 1,
    The in-vehicle device is a power train component including a rotating body.
    An oil suction device in which the oil passage switching portion is arranged at a position offset from directly below the rotation axis of the rotating body in a direction orthogonal to the rotation axis.
  3. 　請求項２に記載のオイル吸入装置において、
    　前記パワートレイン部品が駆動用モータである、オイル吸入装置。     In the oil suction device according to claim 2,
    An oil suction device in which the power train component is a drive motor.
  4. 　請求項２に記載のオイル吸入装置において、
    　前記パワートレイン部品がギヤボックスである、オイル吸入装置。     In the oil suction device according to claim 2,
    An oil suction device in which the powertrain component is a gearbox.
  5. 　請求項２に記載のオイル吸入装置において、
    　前記パワートレイン部品が、駆動用モータとギヤボックスとが同軸上に接続されたものであり、
    　前記油路切り替え部が、前記駆動用モータと前記ギヤボックスとの間であって、前記駆動用モータの回転軸の直下から回転方向にオフセットした位置に配置される、オイル吸入装置。     In the oil suction device according to claim 2,
    The powertrain component is a motor in which a drive motor and a gearbox are coaxially connected.
    An oil suction device in which the oil passage switching portion is arranged between the drive motor and the gear box at a position offset in the rotational direction from directly below the rotation shaft of the drive motor.
  6. 　請求項１から５のいずれか一項に記載のオイル吸入装置において、
    　前記油路切り替え部は、加速度を受けると移動する可動子を備え、前記可動子が前記各流路を開閉することにより前記連通状態と前記遮断状態とを切り替える、オイル吸入装置。     In the oil inhalation apparatus according to any one of claims 1 to 5,
    The oil passage switching unit includes a mover that moves when it receives acceleration, and the mover opens and closes each of the flow paths to switch between the communication state and the cutoff state.
  7. 　請求項６に記載のオイル吸入装置において、
    　前記油路切り替え部は、
    　円環状の前記可動子と、
    　複数の前記吸入部が接続される吸入部側ケースと、
    　前記オイルポンプが接続されるポンプ側ケースと、
    を備え、
    　前記吸入部側ケースと前記ポンプ側ケースとが接続されることで内部に形成された収容部に前記可動子が回転可能な状態で収容され、
    　前記吸入部側ケースは、複数の前記第１油路と前記収容部とを連通する複数の第３油路を備え、
    　前記ポンプ側ケースは、前記第２油路と前記収容部とを連通する第４油路を備え、
    　前記収容部は、前記可動子が転動可能な転動面を備え、
    　加速度を受けない状態では、前記可動子が前記転動面の下端に位置して、すべての前記第３油路及び前記第４油路を開放する状態となり、
    　加速度を受けると、前記可動子が前記転動面を転がり上がって、加速度が作用することで空気中に露出する１または複数の前記吸入部につながる前記第３油路を遮断し、空気中に露出しない１または複数の前記吸入部につながる前記第３油路と前記第４油路とを開放する状態となる、オイル吸入装置。     In the oil suction device according to claim 6,
    The oil passage switching portion is
    With the annular movable element,
    A suction unit side case to which the plurality of suction units are connected,
    The pump side case to which the oil pump is connected and
    With
    By connecting the suction portion side case and the pump side case, the mover is rotatably accommodated in the accommodating portion formed inside.
    The suction unit side case includes a plurality of third oil passages communicating the first oil passage and the accommodating portion.
    The pump-side case includes a fourth oil passage that connects the second oil passage and the accommodating portion.
    The accommodating portion includes a rolling surface on which the mover can roll.
    In the state of not receiving acceleration, the mover is located at the lower end of the rolling surface, and all the third oil passages and the fourth oil passages are opened.
    Upon receiving the acceleration, the mover rolls up on the rolling surface to block the third oil passage connected to the one or a plurality of the suction portions exposed to the air by the action of the acceleration, and enter the air. An oil suction device that opens the third oil passage and the fourth oil passage connected to one or more of the suction portions that are not exposed.
  8. 　請求項６に記載のオイル吸入装置において、
    　前記油路切り替え部は、
    　前記可動子と、
    　複数の前記吸入部が接続される吸入部側ケースと、
    　前記オイルポンプが接続されるポンプ側ケースと、
    を備え、
    　前記吸入部側ケースと前記ポンプ側ケースとが接続されることで内部に形成される収容部に前記可動子が収容され、
    　前記吸入部側ケースは、複数の前記第１油路と前記収容部とを連通する複数の第３油路を備え、
    　前記ポンプ側ケースは、前記第２油路と前記収容部とを連通する第４油路を備え、
    　前記可動子は、前記吸入部側ケースまたは前記ポンプ側ケースのいずれかに揺動可能に固定され、
    　加速度を受けない状態では、前記可動子がすべての前記第３油路及び前記第４油路を開放する状態となり、
    　加速度を受けると、前記可動子が移動して、加速度が作用することで空気中に露出する１または複数の前記吸入部につながる前記第３油路を遮断し、空気中に露出しない１または複数の前記吸入部につながる前記第３油路と前記第４油路とを開放する状態となる、オイル吸入装置。     In the oil suction device according to claim 6,
    The oil passage switching portion is
    With the mover
    A suction unit side case to which the plurality of suction units are connected,
    The pump side case to which the oil pump is connected and
    With
    The mover is accommodated in an accommodating portion formed inside by connecting the suction portion side case and the pump side case.
    The suction unit side case includes a plurality of third oil passages communicating the first oil passage and the accommodating portion.
    The pump-side case includes a fourth oil passage that connects the second oil passage and the accommodating portion.
    The mover is swingably fixed to either the suction unit side case or the pump side case.
    In the state where the acceleration is not received, the mover opens all the third oil passage and the fourth oil passage.
    Upon receiving the acceleration, the mover moves, and the acceleration acts to block one or more of the third oil passages connected to the suction portion, which are not exposed to the air. An oil suction device that opens the third oil passage and the fourth oil passage connected to the suction portion of the above.
  9. 　請求項６に記載のオイル吸入装置において、
    　前記油路切り替え部には複数の前記第１油路と１本の前記第２油路とが接続され、
    　前記油路切り替え部は、
    　前記可動子と、
    　車載状態で上側となる上側ケースと、
    　車載状態で下側となる下側ケースと、
    を備え、
    　前記上側ケースと前記下側ケースとが接続されることで内部に形成される収容部に前記可動子が収容され、
    　前記上側ケースは、前記第２油路と前記収容部とを連通する第４油路を備え、前記第４油路の前記収容部側の開口部が前記上側ケースの中央に開口し、
    　前記下側ケースは、複数の前記第１油路と前記収容部とを連通する複数の第３油路を備え、複数の前記第３油路の前記収容部側の開口部が、車両の上下方向に直交する面である下側ケース上面に、車両の前後方向及び左右方向に所定のピッチで配置され、
    　前記可動子は、底面が平面の板状部材と、当該板状部材を車両の上下方向に貫通し、車両の前後方向及び左右方向に前記第３油路の前記開口部のピッチより小さいピッチで配置される複数の貫通孔と、複数の前記貫通孔を囲み前記板状部材から車両の上方向に伸びて、前記第４油路の前記収容部側の開口部から複数の前記貫通孔までの油路を形成する壁部と、を備え、
    　前記可動子が前記収容部の中央に位置するときは、すべての前記第３油路及び前記第４油路を開放された状態になり、
    　車両に加速度が作用すると、前記可動子が加速度に応じて前記下側ケース上面に沿って移動して、加速度が作用することで空気中に露出する１または複数の前記吸入部につながる前記第３油路が遮断され、空気中に露出しない１または複数の前記吸入部につながる前記第３油路と前記第４油路とが開放された状態になる、オイル吸入装置。     In the oil suction device according to claim 6,
    A plurality of the first oil passages and one of the second oil passages are connected to the oil passage switching portion.
    The oil passage switching portion is
    With the mover
    The upper case, which is the upper side in the in-vehicle state,
    The lower case, which is the lower side in the in-vehicle state,
    With
    The mover is housed in a housing portion formed inside by connecting the upper case and the lower case.
    The upper case includes a fourth oil passage that connects the second oil passage and the accommodating portion, and an opening on the accommodating portion side of the fourth oil passage opens in the center of the upper case.
    The lower case includes a plurality of third oil passages communicating the first oil passage and the accommodating portion, and openings on the accommodating portion side of the plurality of third oil passages are formed above and below the vehicle. It is arranged on the upper surface of the lower case, which is a surface orthogonal to the direction, at a predetermined pitch in the front-rear direction and the left-right direction of the vehicle.
    The mover penetrates a plate-shaped member having a flat bottom surface in the vertical direction of the vehicle, and has a pitch smaller than the pitch of the opening of the third oil passage in the front-rear direction and the left-right direction of the vehicle. A plurality of through holes to be arranged and the plurality of through holes are surrounded and extend upward from the plate-shaped member of the vehicle to extend from the opening on the accommodating portion side of the fourth oil passage to the plurality of the through holes. With a wall that forms an oil passage,
    When the mover is located in the center of the accommodating portion, all the third oil passages and the fourth oil passages are opened.
    When acceleration acts on the vehicle, the mover moves along the upper surface of the lower case in response to the acceleration, and the acceleration acts to connect to one or more of the suction portions exposed to the air. An oil suction device in which the oil passage is blocked and the third oil passage and the fourth oil passage connected to one or a plurality of the suction portions that are not exposed to the air are opened.
  10. 　請求項９に記載のオイル吸入装置において、
    　前記壁部は、前記可動子が移動した場合でも前記収容部側の前記第４油路の開口部全体が前記壁部の内周側に開口するように設けられている、オイル吸入装置。     In the oil suction device according to claim 9,
    The wall portion is an oil suction device provided so that the entire opening of the fourth oil passage on the accommodating portion side opens to the inner peripheral side of the wall portion even when the mover moves.
PCT/IB2020/000064 2020-01-28 2020-01-28 Oil suction device WO2021152341A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023001467B3 (en) 2023-04-14 2024-08-22 Mercedes-Benz Group AG Lubrication and/or cooling device for the lubrication and/or cooling of components of an electric drive system of a motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005042929A (en) * 2004-10-08 2005-02-17 Jatco Ltd Rotary oil suction port
JP2017096356A (en) * 2015-11-20 2017-06-01 アイシン精機株式会社 Multifunctional pump unit
JP2019143746A (en) * 2018-02-22 2019-08-29 本田技研工業株式会社 Vehicle drive device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005042929A (en) * 2004-10-08 2005-02-17 Jatco Ltd Rotary oil suction port
JP2017096356A (en) * 2015-11-20 2017-06-01 アイシン精機株式会社 Multifunctional pump unit
JP2019143746A (en) * 2018-02-22 2019-08-29 本田技研工業株式会社 Vehicle drive device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023001467B3 (en) 2023-04-14 2024-08-22 Mercedes-Benz Group AG Lubrication and/or cooling device for the lubrication and/or cooling of components of an electric drive system of a motor vehicle

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