JP2017115614A - Oil pan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict air suction performed by an oil strainer 10.SOLUTION: An oil pan 1 has a bottom wall 2, peripheral walls 4a to 4d arranged vertically along peripheral edges of the bottom wall 2 and has four buffle plates 8a to 8d raised up from the bottom wall 2. Each of the buffle plates 8a to 8d extends in a radial direction around a central space 12 where an oil strainer 10 is arranged toward a central part of each of the peripheral walls 4a to 4d and at the same time they are bent around the central space 12 along a clockwise direction. Oil moved within the oil pan 1 at the time of adjustable travelling of a vehicle is clogged against its flow by the buffle plates 8a to 8d. In addition, the oil flows along the curved surfaces of the buffle plates 8a to 8d and collects at the space 12 while being circulated in a clockwise direction around the space 12. With this arrangement as above, a suction port of the oil strainer 10 does not expose out of the oil.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an oil pan for a vehicle.

  In general, a power device such as an internal combustion engine for a vehicle or a transmission is provided with an oil pan for storing oil for lubricating each part of the power device and oil as hydraulic oil. The oil stored in the oil pan is sucked up by an oil pump through an oil strainer, supplied to each part of the power unit, and then returned to the oil pan.

  When the vehicle performs acceleration / deceleration traveling or turning traveling, inertial force acts on the oil in the oil pan, and the oil is biased in the oil pan. As a result, the oil strainer suction port is exposed from the oil, and the oil strainer sucks air.

  For this reason, in patent document 1, the baffle plate which defines the inside of an oil pan in two chambers is provided, and the bias of the oil to the axial direction of a crankshaft is suppressed. Moreover, in patent document 2, the baffle plate extended in a vehicle width direction is provided, and the flow of the oil to a vehicle front-back direction is suppressed.

JP 2000-186524 A JP 2011-106381 A

  However, the baffle plates of Patent Documents 1 and 2 only suppress the oil bias in one of the vehicle front-rear direction and the left-right direction, and suppress the oil bias in all the front-rear and left-right directions of the vehicle. Can not.

  An oil pan for a vehicle according to the present invention includes a bottom wall and a peripheral wall standing along a peripheral edge of the bottom wall, and includes at least four baffle plates rising upward from the bottom wall. . Each baffle plate extends radially toward the peripheral wall around the space where the oil strainer is disposed, and is curved along one turning direction around the space.

  According to such a configuration, the oil that moves in the oil pan during acceleration / deceleration traveling of the vehicle is blocked by the baffle plate. Further, the oil flows along the curved surface of the baffle plate and is reliably guided to the space while turning in one turning direction around the space where the oil strainer is arranged.

  In a preferred aspect of the present invention, the bottom wall has a rectangular shape, and each baffle plate is arranged toward the center of the four peripheral walls.

  With such a configuration, the oil is reliably guided to the space along the curved surface of the baffle plate even when the oil moves in any of the front, rear, left and right directions of the vehicle.

  Furthermore, in one preferable aspect of the present invention, an eaves portion extending laterally from the baffle plate is provided at the top of each baffle plate.

  With such a configuration, the oil that has collided with the baffle plate hits the lower surface of the eaves part and is reliably returned to the bottom wall side, and is guided to the space along the curved surface of the baffle plate.

  Furthermore, in a preferred aspect of the present invention, the oil pan includes an insertion port through which the oil strainer is passed and a top plate that covers the upper surface of the oil pan.

  With such a configuration, the oil colliding with the baffle plate hits the lower surface of the top plate and is reliably returned to the bottom wall side, and is guided to the space along the curved surface of the baffle plate.

  According to the present invention, during the acceleration / deceleration traveling or turning of the vehicle, even if the oil moves in any of the front, rear, left and right directions, the oil is concentrated in the space where the oil strainer is disposed, Oil can remain in the space for a longer time. For this reason, it can prevent that the suction opening of an oil strainer is exposed from oil, and can suppress the suction of the air by an oil strainer.

The perspective view of the oil pan of 1st Example. The top view of the oil pan of the Example. Sectional drawing of the oil pan along the AA line of FIG. The perspective view of the oil pan of 2nd Example. Sectional drawing of the oil pan along the BB line of FIG. The perspective view of the oil pan of 3rd Example. Sectional drawing of the oil pan along CC line of FIG.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.

  The oil pan 1 of the present invention is used for an internal combustion engine and a transmission of a vehicle. In this embodiment, the oil pan 1 is described as being used for an internal combustion engine.

  The oil pan 1 is formed in a shallow dish shape with a synthetic resin material, and has a rectangular and flat bottom wall 2 and four peripheral walls 4a that rise from the peripheral edge of the bottom wall 2 and face in the front-rear and left-right directions of the vehicle, respectively. And 4d. A flange portion 6 to be attached to the bottom surface of the internal combustion engine is formed along the outer periphery of the upper end portions of the peripheral walls 4a to 4d. The peripheral walls 4a to 4d face the front side, the rear side, the left side, and the right side of the vehicle, respectively.

  Furthermore, the oil pan 1 includes at least four baffle plates 8a to 8d that are integrally formed with the oil pan 1. Each of the baffle plates 8a to 8d has a substantially rectangular plate shape, and rises vertically upward from the bottom wall 2.

  As shown in FIG. 2, each of the four baffle plates 8 a to 8 d is directed toward the center of each of the four peripheral walls 4 a to 4 d with the central space 12 in which the oil strainer 10 on the internal combustion engine side is disposed as the center. Each extending radially. In other words, each of the baffle plates 8a, 8b, 8c, 8d is disposed at a position corresponding to the front side, the rear side, the left side, and the right side of the vehicle. Each extends in the left-right direction. Each of the baffle plates 8a to 8d is curved along a clockwise turning direction that is a clockwise direction around the space 12 in a plan view. For example, taking the baffle plate 8b located on the rear side of the vehicle as an example, the baffle plate 8b is gently curved with a substantially central portion in the longitudinal direction protruding in the vehicle left direction (left side in the figure). Specifically, the baffle plate 8b has a linear shape extending from the tip edge 13 located in the vicinity of the oil strainer 10 to a substantially central portion in the longitudinal direction, and the outer edge on the peripheral walls 4a to 4d side from the substantially central portion. A circular arc with a gentle curvature toward 14 is formed. The other three baffle plates 8a, 8c, 8d also basically have the same shape and length as the baffle plate 8b.

  As shown in FIG. 3, the outer end edge 14 of each of the baffle plates 8 a to 8 d is joined to the peripheral walls 4 a to 4 d, and the lower edge 15 is joined to the bottom wall 2. The front edge 13 is orthogonal to the bottom wall 2, and the space 12 is surrounded by the front edges 13 of the four baffle plates 8 a to 8 d. Further, the upper edges 16 of the four baffle plates 8a to 8d extend along one plane, and are positioned at a height near the flange portion 6 in order to reliably guide the oil.

  Next, the flow of oil in the oil pan 1 will be described with reference to FIG.

  When the vehicle is stopped or traveling at a low speed, the oil level of the oil in the oil pan 1 is substantially horizontal. When the vehicle accelerates rapidly from this state, an inertial force directed toward the rear of the vehicle acts on the oil in the oil pan 1, and the oil tends to move to the rear of the oil pan 1 (the vehicle rear side).

  The oil flowing from the front to the rear of the oil pan 1 collides with the left and right baffle plates 8c, 8d, then flows along the curved surfaces of these baffle plates 8c, 8d, and rotates clockwise around the space 12. Gather in the space 12 while turning. A part of the oil flows along the curved surface of the front baffle plate 8a, and also collects in the space 12 while turning in the clockwise direction around the space 12. Therefore, when these oils gather in the space 12 and collide with each other, the height of the oil surface in the space 12 rises and stays in the vicinity of the suction port of the oil strainer 10 for a long time. Thereby, it is possible to avoid sucking air and to suck up oil reliably.

  Similarly, when the vehicle suddenly decelerates, turns left or turns right, the oil flows along the curved surfaces of the baffle plates 8a to 8d, and turns in the space 12 while turning clockwise around the space 12. To gather.

  As described above, even if the oil in the oil pan 1 moves in any direction of the front, rear, left and right of the vehicle due to the inertial force generated during acceleration / deceleration traveling or turning of the vehicle, the oil should concentrate in the central space 12. Therefore, it is possible to prevent the suction port of the oil strainer 10 from being exposed from the oil, and the oil is reliably sucked up.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component same as 1st Example mentioned above, and the description about the overlapping part is abbreviate | omitted.

  The oil pan 20 of the second embodiment has basically the same configuration as the oil pan 1 of the first embodiment, and includes a bottom wall 2, peripheral walls 4a to 4d, and baffle plates 8a to 8d. In the present embodiment, a thin plate-like eaves portion 22 projecting sideways from the baffle plates 8a to 8d is provided at the top of each of the baffle plates 8a to 8d.

  The eaves part 22 is formed of a synthetic resin material, and is formed with a constant width along the curved baffle plates 8a to 8d. The eaves portion 22 is attached to the top of the baffle plates 8a to 8d formed integrally with the bottom wall 2, or is formed integrally with the baffle plates 8a to 8d that are separate from the bottom wall 2, and the bottom wall 2 Attached to.

  As shown in FIG. 5, the eaves portion 22 is provided at the top of the baffle plates 8 a to 8 d so as to be parallel to the bottom wall 2, and extends from the baffle plates 8 a to 8 d to both sides. That is, the baffle plates 8a to 8d provided with the eaves portion 22 each have a substantially T-shaped cross section.

  In such a configuration, for example, when the vehicle accelerates rapidly, the oil flows toward the rear wall toward the peripheral wall 4b and collides with the baffle plates 8c and 8d. At this time, although the oil level rises along the baffle plates 8c and 8d, the oil hits the lower surface of the eaves portion 22 and returns to the bottom wall 2 side, so that the oil surface returns to the space 12 along the curved surfaces of the baffle plates 8c and 8d. Be sure to be guided.

  Next, a third embodiment of the present invention will be described with reference to FIGS.

  The oil pan 30 of the third embodiment has basically the same configuration as the oil pan 1 of the first embodiment, and includes a bottom wall 2 and peripheral walls 4a to 4d. Furthermore, the oil pan 30 has a thin plate-like top plate 32 formed separately from a synthetic resin material.

  The top plate 32 has a rectangular shape smaller than the opening on the upper surface of the oil pan 30, and a circular insertion port 36 through which the oil strainer 10 passes is formed at the center. The top plate 32 covers the upper surface of the oil pan 1 so as to be parallel to the bottom wall 2. A gap serving as an oil dropping groove is formed between the outer edge 32a of the top plate 32 and each of the peripheral walls 4a to 4d.

  The four baffle plates 8 a to 8 d described above are formed integrally with the top plate 32. As shown by broken lines in FIG. 6, each of the baffle plates 8 a to 8 d extends radially toward the outer edge 32 a of the top plate 32 with the insertion opening 36 as the center. The shape of the baffle plates 8a to 8d is basically the same as that of the first embodiment, and is curved along the clockwise turning direction around the space 12.

  According to such a configuration, even when the oil collides with the baffle plates 8a to 8d and the oil level rises along the baffle plates 8a to 8d, the oil hits the lower surface of the top plate 32 and the bottom wall 2 side Therefore, it is reliably guided to the space 12 along the curved surfaces of the baffle plates 8a to 8d.

  In addition, you may make it attach the top plate 32 formed separately to the top part of the baffle plates 8a-8d integrally formed in the bottom wall 2. As shown in FIG.

  As mentioned above, although one Example of this invention was described, this invention is not restricted to the said Example, A various change is possible.

  For example, the bottom wall 2 may have a polygonal shape. Further, five or more baffle plates 8 may be provided. Moreover, the structure which curved each baffle plate 8 along the counterclockwise turning direction is also possible.

  In each of the above embodiments, the oil strainer 10 is disposed at the center of the oil pans 1, 20, and 30, but may be disposed at an arbitrary position, for example, a position near the front or the right. In this case, the length of each baffle plate 8 becomes a different length in accordance with the position of the oil strainer 10. That is, the length of each baffle plate 8 does not necessarily have to be the same.

  Further, in an oil pan having a deep bottom portion having a deep bottom and a shallow bottom portion having a shallow bottom, the baffle plate 8 may be provided on the deep bottom portion in which oil is stored.

1, 20, 30 Oil pan 8a to 8d Baffle plate 10 Oil strainer 22 Eaves portion 32 Top plate

Claims (4)

In an oil pan for a vehicle having a bottom wall and a peripheral wall erected along the peripheral edge of the bottom wall,
Comprising at least four baffle plates rising upward from the bottom wall;
Each baffle plate extends radially toward the peripheral wall with a space in which the oil strainer is disposed as a center, and is curved along one turning direction with the space as a center. Bread.   2. The oil pan according to claim 1, wherein the bottom wall is rectangular and each baffle plate is arranged toward the center of the four peripheral walls.   3. The oil pan according to claim 1, wherein an eaves portion extending laterally from the baffle plate is provided on a top portion of each baffle plate.   The oil pan according to claim 1, further comprising a top plate that has an insertion port through which the oil strainer passes and covers an upper surface of the oil pan.

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