JP2009174469A - Oil pan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil pan for sucking oil from a predetermined position of the oil pan with an oil suction hose of an oil suction device or the like by a simple configuration. <P>SOLUTION: Since ribs 22, 24 are provided on the bottom face (step part 12, slant bottom part 14, etc.) of the oil pan, movement of a tip of the oil suction hose inserted into an oil storage space is inhibited by the ribs 22, 24 so as to position the oil suction hose. Thus, only the installation of the ribs 22, 24 in optional positions enables suction of oil from any level by the oil suction device by a simple configuration. In particular, since the oil level is set to be equal to that when an oil drain hole 18 is used, oil replacement similar to in the case of normal oil draining is enabled, preventing unnecessary uncomfortable feeling with respect to a difference of oil quantity during oil replacement work. The ribs 22, 24 are easily formed by a press and sufficient rigidity is obtained even when the thickness of the oil pan 2 is reduced, so as to contribute to weight reduction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an oil pan that is disposed under an engine and stores oil in an oil storage space.

  A drain plug is provided in order to drain oil from an oil pan provided in the lower part of the engine in order to change oil in a gasoline engine or a diesel engine provided in the vehicle. However, the work of draining oil from the drain plug is a work at the bottom of the vehicle, so the workability is not good.

Instead, there is a technique for inserting and sucking a nozzle of an oil changer (oil suction machine) from an oil level gauge guide as an efficient oil draining technique in a short time (see, for example, Patent Document 1). In this Patent Document 1, a liquid passage is formed between the nozzle insertion position and the lowermost part at the bottom of the oil pan in consideration of the case where it is difficult for the nozzle to reach the desired position, specifically the lowermost part of the oil pan. The lowermost oil can be sucked through the liquid passage.
JP 2002-221017 A (page 3-4, FIG. 1-3)

However, providing such a liquid passage for suction in the oil pan has a problem that the structure of the oil pan is complicated.
An object of the present invention is to realize an oil pan capable of sucking oil with an oil suction hose such as an oil suction machine from the lowermost part of the oil pan or other predetermined position with a simple configuration.

In the following, means for achieving the above object and its effects are described.
The oil pan according to claim 1 is an oil pan that is disposed in the lower part of the engine and stores oil in the oil storage space, and the oil pan hose inserted into the oil storage space contacts the bottom surface of the oil pan. A hose tip positioning portion for preventing movement of the tip of the oil suction hose is provided.

  As described above, the hose tip positioning portion for preventing the tip of the oil suction hose from moving is provided on the bottom surface of the oil pan. Accordingly, the tip of the oil suction hose inserted into the oil pan is prevented from moving by the hose tip positioning portion, so that the hose tip is positioned at the position of the hose tip positioning portion. By arranging the hose tip positioning portion at the lowermost part or other positions, the level at which oil is sucked by the oil suction hose can be determined naturally.

  Thus, it is only necessary to provide the hose tip positioning portion at an arbitrary position, and the oil can be sucked by the oil suction hose from the lowermost part of the oil pan or other predetermined position with a simple configuration.

  The oil pan according to claim 2 is characterized in that, in claim 1, the insertion port for inserting the oil suction hose into the oil storage space is an oil level gauge guide.

  When the oil suction hose is inserted from the oil level gauge guide, the tip position of the oil suction hose that is directly guided by the oil level gauge guide may be separated from the predetermined position for sucking oil. Even in such a case, when the tip of the oil suction hose is further extended from the position directly guided by the oil level gauge guide, the hose tip is prevented from moving by the hose tip positioning portion. Thus, the oil level at which oil is sucked by the oil suction hose is naturally determined.

In this way, oil can be sucked by the oil suction hose from the lowermost part of the oil pan or other predetermined position with a simple configuration.
The oil pan according to claim 3 is the oil pan according to claim 1 or 2, wherein the insertion direction of the oil suction hose is obliquely guided with respect to the bottom surface of the oil pan, and the hose tip positioning portion is the oil suction It is formed as a rib that is provided in front of an initial contact point that is a position where the tip of the hose first comes into contact with the bottom surface of the oil pan by insertion of the hose for restricting movement of the tip of the oil suction hose. And

  The insertion direction of the oil suction hose is guided obliquely with respect to the bottom surface of the oil pan, so that if the hose for oil suction is further inserted after the tip of the hose contacts the bottom surface of the oil pan, the tip of the hose is the initial contact point. Move forward than. However, since the hose tip positioning part is provided in front of the initial contact point as a rib that restricts the tip movement of the oil suction hose, the hose tip movement is easily stopped at this rib part, and this makes the oil suction The oil level at which oil is sucked by the hose is determined automatically.

  In this way, by providing a simple structure called a rib, oil can be sucked by the oil suction hose from the lowermost part of the oil pan or other predetermined position. Furthermore, since the rigidity of the oil pan is increased by providing the ribs on the bottom surface of the oil pan, sufficient rigidity can be obtained even if the oil pan is thinned, which can contribute to weight reduction.

  The oil pan according to claim 4 is the oil pan according to claim 1 or 2, wherein the insertion direction of the oil suction hose is obliquely guided with respect to the bottom surface of the oil pan, and the hose tip positioning portion Is formed as a rib for limiting the movement of the tip of the oil suction hose, which is provided in an arc shape centering on an initial contact point which is a position where the tip of the hose first contacts the bottom surface of the oil pan by insertion of the oil hose It is characterized by that.

  The insertion direction of the oil suction hose is guided obliquely with respect to the bottom surface of the oil pan, so that if the hose for oil suction is further inserted after the tip of the hose contacts the bottom surface of the oil pan, the tip of the hose is the initial contact point. Move from. However, since the hose tip positioning part is provided in an arc shape centering on the initial contact point as a rib that restricts the tip movement of the oil suction hose, the movement of the hose tip can be easily stopped at this rib portion. it can. This naturally determines the oil level at which oil is sucked by the oil suction hose.

  In this way, oil can be sucked by the oil suction hose from the lowermost part of the oil pan or other predetermined position by providing a simple configuration of arc-shaped ribs. Furthermore, since the rigidity of the oil pan is increased by providing the ribs on the bottom surface of the oil pan, sufficient rigidity can be obtained even if the oil pan is thinned, which can contribute to weight reduction.

The oil pan according to claim 5 is characterized in that, in claim 3 or 4, a plurality of the ribs are provided.
By providing a plurality of ribs in this way, even if the movement of the tip of the hose cannot be blocked by one rib, the movement of the tip of the hose can be surely blocked by another rib.

The oil pan according to a sixth aspect is characterized in that, in the fifth aspect, the plurality of ribs are overlapped when viewed from an insertion direction of the oil suction hose.
In this way, when a plurality of ribs are provided, the tip movement of the oil suction hose can be reliably prevented by overlapping the oil suction hose as viewed from the insertion direction. Further, since the gap is maintained, the oil flow smoothly flows when the oil is discharged.

  The oil pan according to a seventh aspect is characterized in that, in the fifth aspect, the gaps in the plurality of ribs are narrower than the tip of the oil suction hose when viewed from the insertion direction of the oil suction hose.

  By setting the gap between the ribs in this manner, even if the hose tip is about to enter between the ribs, the hose tip position can be maintained and the hose tip movement can be reliably prevented. Furthermore, the oil flow smoothly flows when the oil is discharged due to the gap.

  In the oil pan according to claim 8, in any one of claims 3 to 7, the rib may be formed on the bottom surface of the oil pan by pressing the metal plate forming the oil pan. It is formed.

By pressing in this way, an oil pan provided with a hose tip positioning portion can be easily manufactured without increasing the number of work steps for rib formation.
The oil pan according to claim 9, wherein in the rib according to any one of claims 3 to 8, the inclined surface on the opposite side in the tip movement direction of the oil suction hose is more than the inclined surface on the non-opposing side. Is characterized by a large gradient.

  Thus, since the inclined surface on the opposite side of the rib in the tip moving direction is the side on which the tip of the oil suction hose comes into contact, the movement of the tip of the hose can be reliably prevented by increasing the slope of the inclined surface. Furthermore, since the slope of the inclined surface on the non-opposing side is small, rib forming processing such as press working becomes easy.

  The oil pan according to claim 10 is the oil pan according to any one of claims 1 to 9, wherein the movement preventing position of the tip of the oil suction hose set by the hose tip positioning portion is an oil pan in a vertical direction. It is characterized in that it is set at substantially the same level as the oil draining level by the oil draining hole provided in.

  As a result, the oil level remaining after the oil suction by the oil suction hose can be made substantially the same as the oil level when the oil is extracted from the oil drain hole. This makes it possible to change the oil in the same way as normal oil removal without draining oil more than necessary even if an oil suction hose is used. Will not cause.

[Embodiment 1]
FIG. 1 is a plan view of an oil pan 2 of a vehicle engine to which the above-described invention is applied, and FIG. In FIG. 2, the crankcase 4 is indicated by a broken line, and the oil suction hose 6 fed from the oil suction machine is indicated by a solid line.

  As shown in FIGS. 1 and 2, the oil pan 2 is a container in which a steel plate is pressed into a concave shape, the planar shape is a distorted ellipse, and the inside thereof is an oil storage space for storing oil for lubricating the engine. 8 is formed.

  The oil pan 2 is arranged in the longitudinal direction on the bottom surface of the oil pan 2, a deep bottom portion 10 located at the lowermost portion, a step portion 12, and a state where the oil pan 2 is raised one step at the step portion 12 and inclined toward the deep bottom portion 10 side. And an inclined bottom portion 14 formed by As shown in FIG. 2, the outer edge portion 16 of the oil pan 2 is bolted to the lower portion of the crankcase 4 via a gasket 16 a, whereby the entire oil pan 2 is fixed to the lower portion of the crankcase 4.

An oil drain hole 18 is opened on the opposite side of the step portion 12 across the deep bottom portion 10 and is closed by a drain plug 20 screwed from the outside.
From the inclined bottom portion 14 to the stepped portion 12, there are two ribs 22 and 24 as convex portions that are simultaneously formed during the entire press molding. In these ribs 22, 24, the edges 22 a, 24 a on the oblique bottom 14 side are set to a height at which the oil level is almost the same as the oil level when the oil is removed by the oil drain hole 18. .

  These ribs 22 and 24 are not opposed to the inclined surfaces 22b and 24b on the opposite side with which the tip 6a abuts against the moving direction (left direction in the figure) of the tip 6a of the oil suction hose 6 at the time of insertion. Side inclined surfaces 22c and 24c exist. Among these, the gradient of the inclined surfaces 22b and 24b on the opposite side is set to be larger than the gradient of the inclined surfaces 22c and 24c on the non-opposing side.

  The crankcase 4 is formed with an oil level gauge guide 4a. When the oil suction hose 6 fed out from the oil suction machine is inserted into the oil level gauge guide 4a, the position where the tip 6a of the oil suction hose 6 guided by the oil level gauge guide 4a first contacts is the inclined bottom portion 14 Is the contact region X. The ribs 22 and 24 described above exist in front of the contact region X (front in the insertion direction of the oil suction hose 6: left in FIGS. 1 and 2).

In the configuration of the oil pan 2 as described above, a case where the oil suction hose 6 is inserted from the oil level gauge guide 4a and the oil is sucked for oil replacement will be described.
When the oil suction hose 6 is inserted from the oil level gauge guide 4a, the tip 6a of the oil suction hose 6 first comes into contact with the contact region X by being guided by the oil level gauge guide 4a. That is, the contact area X is the initial contact point. Thereafter, the oil suction hose 6 is further extended and inserted into the oil level gauge guide 4a. At this time, since the insertion direction of the oil suction hose 6 is obliquely guided with respect to the oblique bottom portion 14, the solid line in FIG. 2 is shown after the tip 6a of the oil suction hose 6 contacts the oblique bottom portion 14. As shown by the arrow, the tip 6a moves to the front side (the left side in the drawing) in the insertion direction while sliding on the oblique bottom portion.

  There are ribs 22 and 24 in front of the insertion direction. Therefore, the tip 6a of the oil suction hose 6 finally comes into contact with one of the inclined surfaces 22b and 24b facing the contact region X in the ribs 22 and 24, or the inclined surface 24b of one rib 24 in FIG. . In addition, it may contact | abut to the inclined surface 22b of the other rib 22. FIG.

  Thus, even if the oil suction hose 6 is further extended from the oil suction machine and inserted from the oil level gauge guide 4a, the movement of the tip 6a of the oil suction hose 6 is limited, and the position of the tip 6a is shown in FIG. This state is maintained. That is, the ribs 22 and 24 correspond to hose tip positioning portions that prevent movement of the tip 6 a of the oil suction hose 6.

  Therefore, in this state, when oil is sucked from the oil suction hose 6 by the oil suction machine, the oil level shown by the broken line in FIG. 2 is lowered to the level shown by the solid line. Oil suction stops at the level of this solid line. This level is substantially the same as the case where oil is extracted from the oil drain hole 18 as described above.

  A gap 26 exists between the two ribs 22 and 24. The width of the gap 26 is sufficiently narrower than the tip 6a of the oil suction hose 6 when viewed from the insertion direction. Alternatively, the ribs 22 and 24 are completely overlapped in the insertion direction so that the gap 26 cannot be seen. Therefore, even if the tip 6a of the oil suction hose 6 tries to enter the gap 26, the position is fixed by coming into contact with both the ribs 22 and 24, or coming into contact with the front rib 24. Therefore, even if the gap 26 exists, there is no problem in preventing the movement of the tip 6a of the oil suction hose 6. When the oil is sucked and the oil level is lowered, the gap 26 becomes a route through which the oil flow smoothly flows. Even if the ribs 22 and 24 exist, no oil remains on the oblique bottom portion 14 side.

According to the first embodiment described above, the following effects can be obtained.
(I). Since the ribs 22 and 24 for preventing the movement of the tip 6a of the oil suction hose 6 are provided from the bottom surface of the oil pan, here from the step portion 12 to the inclined bottom portion 14, the oil suction inserted into the oil storage space 8 is provided. The hose 6 is prevented from moving at the tip 6 a by the ribs 22 and 24. As a result, the tip 6a of the oil suction hose 6 is positioned at the position of the ribs 22 and 24, so that the oil up to the edges 22a and 24a of the ribs 22 and 24 can be sucked by the oil suction machine.

In this way, oil can be sucked from an arbitrary level by an oil suction machine with a simple configuration only by providing the ribs 22 and 24 at arbitrary positions.
(B). In the present embodiment, the positions where the ribs 22 and 24 are provided are at the same level as the oil draining level by the oil draining hole 18, and the oil is sucked by the oil suction machine to the same level as that by the oil draining hole 18. Can be aspirated. This makes it possible to replace the oil in the same way as normal oil removal without draining oil more than necessary even when using an oil suction machine, resulting in unnecessary discomfort with respect to the difference in quantity of oil during oil replacement work. There is nothing.

  (C). An oil level gauge guide 4 a is used as an insertion port for inserting the oil suction hose 6 into the oil storage space 8 of the oil pan 2. When the oil suction hose 6 is inserted from the oil level gauge guide 4a, the tip position (abutment region X) of the oil suction hose 6 directly guided by the oil level gauge guide 4a and a predetermined position for sucking oil, Here, the oil suction hole 18 is separated from the position where it can be sucked to the same level.

  However, when the tip 6a of the oil suction hose 6 is further extended from the position (contact region X) directly guided by the oil level gauge guide 4a, the tip 6a of the oil suction hose 6 is formed by the ribs 22 and 24. Movement is prevented. Thus, the oil level at which the oil is sucked by the oil suction machine can be naturally determined to be the same level as that by the oil drain hole 18.

  (D). By providing the simple configuration of the ribs 22 and 24, as described above, oil can be sucked from an arbitrary position of the oil pan 2 by the oil suction machine, and the ribs 22 and 24 are disposed on the bottom surface of the oil pan 2, here The rigidity of the oil pan 2 can be increased by being provided from the step portion 12 to the oblique bottom portion 14. Therefore, even if the oil pan 2 is thinned, sufficient rigidity can be obtained, which can contribute to weight reduction.

  (E). By providing a plurality of ribs 22 and 24, here two, even if the movement of the tip 6a of the oil suction hose 6 cannot be blocked by one rib 22, it can be blocked by another rib 24. . The reverse is also true. Therefore, the movement of the tip 6a of the oil suction hose 6 can be reliably prevented at a predetermined position.

  (F). The gap 26 between the two ribs 22 and 24 is narrower than the tip 6 a of the oil suction hose 6 when viewed from the direction in which the oil suction hose 6 is inserted. Alternatively, the ribs 22 and 24 are overlapped when viewed from the insertion direction. As a result, the tip 6a of the oil suction hose 6 cannot pass through the gap 26, and the position of the tip 6a of the oil suction hose 6 is maintained and the movement of the tip 6a of the oil suction hose 6 is reliably prevented. it can. Further, the oil flow smoothly flows through the gap 26 when the oil is discharged.

  (G). The ribs 22 and 24 are formed in a convex shape from the stepped portion 12 to the inclined bottom portion 14 by pressing a metal plate, here a steel plate. By press working in this way, the oil pan 2 provided with the ribs 22 and 24 as the hose tip positioning portions can be easily manufactured without increasing the number of work steps for forming the ribs 22 and 24.

  (H). In the ribs 22 and 24, the inclined surfaces 22b and 24b on the opposite side with respect to the moving direction of the tip 6a of the oil suction hose 6 have a larger gradient than the inclined surfaces 22c and 24c on the non-opposing side. The inclined surfaces 22b and 24b on the opposite side where the gradient is large are on the side where the oil suction hose 6 comes into contact, so that the movement of the tip 6a of the oil suction hose 6 can be reliably prevented. By reducing the gradient on the inclined surfaces 22c, 24c on the non-facing side, a rib forming process such as press working becomes easy.

[Embodiment 2]
FIG. 3 is a plan view of the oil pan 102 of the vehicle engine in the present embodiment, and FIG. 4 is a BB sectional view corresponding to FIGS. 1 and 2 of the first embodiment.

  The oil pan 102 is provided with a bottom bottom portion 110, a stepped portion 112, and a shallow bottom portion 114 raised one step at the stepped portion 112, arranged in the longitudinal direction on the bottom surface of the oil pan 102. . When the oil pan 102 is attached to the crankcase 104, the deep bottom portion 110 and the shallow bottom portion 114 are both horizontal.

  When the oil suction hose 106 is inserted into the shallow bottom portion 114 from the oil level gauge guide 104a formed in the crankcase 104, the contact region Y is a position where the tip 106a of the oil suction hose 106 first contacts. Exists.

  As in the first embodiment, an oil drain hole 118 is opened on the opposite side of the stepped portion 112 across the deep bottom portion 110 and is closed by a drain plug 120 screwed from the outside.

  From the shallow bottom portion 114 to the step portion 112, three ribs 122, 123, and 124 are formed as convex portions by press molding. The ribs 122, 123, and 124 have edge portions 122 a, 123 a, and 124 a on the shallow bottom portion 114 side set to substantially the same level as the oil level when oil is removed through the oil drain hole 118. These ribs 122, 123, and 124 are present in front of the contact area Y in the insertion direction of the oil suction hose 106.

  Of these, the two ribs 122 and 123 have a concentric arc shape with the contact region Y as the center. The other rib 124 is linear, but the rib 124 may also have an arc shape centered on the contact area Y.

  The ribs 122, 123, 124 have inclined surfaces 122 b, 123 b, 124 b on the opposite side and inclined surfaces 122 c, 123 c, 124 c on the non-facing side with respect to the moving direction of the oil suction hose 106. Of these, the gradients of the inclined surfaces 122b, 123b, 124b on the opposite side with which the tip 106a of the oil suction hose 106 abuts are set larger than the gradient surfaces 122c, 123c, 124c on the non-opposing side. This ensures the restriction by the contact between the tip 106a of the oil suction hose 106 and the ribs 122, 123, and 124.

  In such a configuration of the oil pan 102, a case will be described in which the oil suction hose 106 of the oil suction machine is inserted from the oil level gauge guide 104a to suck oil for oil replacement.

  When the oil suction hose 106 is inserted from the oil level gauge guide 104a, the tip 106a of the oil suction hose 106 first comes into contact with the contact area Y by being guided by the oil level gauge guide 104a. That is, the inside of the contact area Y is the initial contact point. Thereafter, the oil suction hose 106 is further extended and inserted into the oil level gauge guide 104a. At this time, since the insertion direction of the oil suction hose 106 is guided obliquely with respect to the shallow bottom portion 114, after the tip 106 a comes into contact with the shallow bottom portion 114, as shown by the solid line arrow in FIG. Moves to the front side in the insertion direction while sliding on the shallow bottom portion 114.

  A rib 122 is present on the front surface in front of the insertion direction. Therefore, the tip end 106 a of the oil suction hose 106 contacts the inclined surface 122 b of the rib 122 that is opposed to the contact region Y in an arc shape. As a result, even if the oil suction hose 106 is extended and inserted further from the oil level gauge guide 104a, the movement of the tip 106a of the oil suction hose 106 is restricted, and the state of FIG. 4 is maintained. That is, the rib 122 corresponds to a hose tip positioning portion that prevents the tip 106a of the oil suction hose 106 from moving.

  Accordingly, when oil is sucked by the oil suction machine through the oil suction hose 106 in this state, the oil level shown by the broken line in FIG. 4 is lowered to the level shown by the solid line. Oil suction stops at this level. This oil level is substantially the same as when oil is extracted from the oil drain hole 118.

  When the tip 106a of the oil suction hose 106 is detached from the rib 122 due to bending of the oil suction hose 106 or for some reason, the tip of the oil suction hose 106 is shown on the next existing rib 123 as indicated by a broken line. The movement of 106a is restricted, and the state of the broken line in FIG. 4 is maintained. That is, the rib 123 also corresponds to a hose tip positioning portion that prevents the tip 106a of the oil suction hose 106 from moving.

  Further, when the tip end 106 a of the oil suction hose 106 is detached from the rib 123, the movement of the tip end 106 a of the oil suction hose 106 is limited to the next existing rib 124. That is, the rib 124 also corresponds to a hose tip positioning portion that prevents the tip 106a of the oil suction hose 106 from moving.

  Note that the gaps 126 and 127 between the ribs 122, 123, and 124 do not appear to overlap with each other from the insertion direction of the oil suction hose 106. Therefore, the tip 106a of the oil suction hose 106 does not pass through the gaps 126 and 127 themselves. When the oil is sucked, the gaps 126 and 127 serve as a route through which the oil flow smoothly, and even if the ribs 122, 123, and 124 are present, the oil residue on the shallow bottom portion 114 side is small.

According to the second embodiment described above, the following effects can be obtained.
(I). Although there are differences in the presence of the three ribs 122, 123, and 124, the effect of the first embodiment is produced.

  Further, since the ribs 122, 123, and 124 are provided in an arc shape centering on the contact area Y that is the initial contact point, the tip of the oil suction hose 106 after contacting the ribs 122, 123, and 124 is provided. The position stability of 106a is high, and the movement of the tip 106a can be easily stopped.

[Embodiment 3]
FIG. 5 is a plan view of the oil pan 202 of the vehicle engine in the present embodiment, and FIG. 6 is a CC cross-sectional view corresponding to FIGS. 1 and 2 of the first embodiment. The oil pan 202 is different from the first embodiment in the arrangement of the ribs 222. In the present embodiment, the rib 222 is provided on the deep bottom portion 210 and is not provided on the step portion 212 or the oblique bottom portion 214. Other configurations are the same as those of the first embodiment.

  In such a configuration, when the oil suction hose 206 is inserted from the oil level gauge guide 204a, the tip 206a of the oil suction hose 206 is initially brought into contact with the contact region X by being guided by the oil level gauge guide 204a. Touch. After that, when the oil suction hose 206 is further inserted from the oil suction machine and the oil suction hose 206 is inserted, the tip 206a slides on the oblique bottom portion 214 and moves to the front side in the insertion direction (left side in the drawing).

  Since there is no rib in the insertion direction in the oblique bottom portion 214, the tip 206 a of the oil suction hose 206 reaches the deep bottom portion 210 from the step portion 212 and further slides on the deep bottom portion 210 to reach the rib 222. . Here, by contacting the rib 222, even if the oil suction hose 206 is further inserted from the oil level gauge guide 204a, the movement of the tip 206a of the oil suction hose 206 is restricted, and the state of FIG. 6 is maintained. The That is, the rib 222 serves as a hose tip positioning portion that prevents the tip 206a of the oil suction hose 206 from moving.

  Accordingly, when oil is sucked by the oil suction machine through the oil suction hose 206 in this state, the oil level shown by the broken line in FIG. 6 reaches the deep bottom portion 210, and almost all of the oil is discharged, so that the oil suction is not performed. Stop. This level can perform more complete oil drainage than when oil is drained from the oil drain hole 218.

  In the conventional configuration in which the rib 222 does not exist, the movement of the tip 206a of the oil suction hose 206 is not prevented on the bottom surface of the deep bottom portion 210. As a result, as shown by a broken line in FIG. 6, the tip 206a of the oil suction hose 206 rises from the bottom surface of the deep bottom portion 210 on the oil drain hole 218 side, and in an extreme case, from the oil storage space 208 of the oil pan 202. May also come out. This is not enough oil suction.

According to the third embodiment described above, the following effects can be obtained.
(I). Since a rib 222 for preventing the movement of the tip 206a of the oil suction hose 206 is provided on the bottom surface of the oil pan, here, the deep bottom portion 210, the oil suction hose inserted into the oil storage space 208 of the oil pan 202 is provided. The tip 206 a is prevented from moving by the rib 222. As a result, the tip end 206 a of the oil suction hose 206 is positioned at the position of the rib 222. Here, since the rib 222 is provided in the deep bottom portion 210, the tip end 206a does not float, and almost all of the oil can be sucked by the oil suction device.

By simply providing the ribs 222 in this way, the oil can be reliably sucked by the oil suction device at an arbitrary level, here the deepest level, with a simple configuration.
(B). Although there are differences in the number and position of the ribs 222, the effects (d), (g), and (h) of the first embodiment are produced.

[Other embodiments]
(A). In the third embodiment, the movement of the tip 206a of the oil suction hose 206 may be more reliably prevented by providing a plurality of ribs 222 as in the first embodiment. Furthermore, the movement of the tip 206a may be more reliably prevented by providing it in a concentric arc shape as in the second embodiment.

(B). In the first embodiment, the ribs 22 and 24 are provided from the step portion 12 to the oblique bottom portion 14, but may be provided only on the step portion 12 or only on the oblique bottom portion 14.
Further, in addition to the ribs provided on the stepped portion 12 or the inclined bottom portion 14, ribs may be provided on the deep bottom portion 10 as in the third embodiment. Thus, even if the tip 6a of the oil suction hose 6 slips through the ribs 22 and 24 of the stepped portion 12 and the inclined bottom portion 14, oil suction failure does not occur.

  Similarly in the second embodiment, it may be provided only on the stepped portion 112 or may be provided only on the shallow bottom portion 114. Further, in addition to the rib provided on the stepped portion 112 or the shallow bottom portion 114, a rib may be provided on the deep bottom portion 110 as in the third embodiment. Thus, even if the tip 106a of the oil suction hose 106 passes through the ribs 122, 123, and 124 of the stepped portion 112 and the shallow bottom portion 114, an oil suction failure does not occur.

  (C). In the first embodiment, the two ribs 22 and 24 are provided, but may be one or three or more. In the second embodiment, the three ribs 122, 123, and 124 are provided. However, one or two ribs may be used, and four or more ribs may be used. Although one rib 222 is provided in the third embodiment, two or more ribs may be provided.

  (D). In each embodiment, the rib is formed as a convex portion on the bottom surface of the oil pan, but may be formed as a concave portion. Also in this case, the oil suction hose can be positioned by preventing the tip of the oil suction hose from moving on the inclined surface on the opposite side in the tip movement direction of the oil suction hose. Furthermore, the inclination of the inclined surface on the opposite side is made larger than the inclined surface on the non-opposing side, so that the movement of the hose tip can be reliably prevented. Compared with this, since the slope of the inclined surface on the non-opposing side is small, rib forming processing such as press working becomes easy.

  (E). In each embodiment, the rib is formed by press molding. However, the rib may be formed as a plate raised on a deep bottom, a stepped portion, a slant bottom or a shallow bottom by mechanical caulking or welding. .

FIG. 3 is a plan view of the oil pan of the vehicle engine in the first embodiment. AA sectional drawing in FIG. FIG. 6 is a plan view of an oil pan according to a second embodiment. BB sectional drawing in FIG. FIG. 6 is a plan view of an oil pan according to a third embodiment. CC sectional drawing in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Oil pan, 4 ... Crank case, 4a ... Oil level gauge guide, 6 ... Oil suction hose, 6a ... Tip, 8 ... Oil storage space, 10 ... Deep bottom part, 12 ... Step part, 14 ... Slope bottom part, 16 ... outer edge portion, 16a ... gasket, 18 ... oil drain hole, 20 ... drain plug, 22, 24 ... rib, 22a, 24a ... edge portion, 22b, 24b ... inclined surface on opposite side, 22c, 24c ... non-opposing side Inclined surface, 26 ... gap, 102 ... oil pan, 104 ... crankcase, 104a ... oil level gauge guide, 106 ... oil suction hose, 106a ... tip, 110 ... deep bottom part, 112 ... step part, 114 ... shallow bottom part, 118 ... Oil drain hole, 120 ... Drain plug, 122, 123, 124 ... Rib, 122a, 123a, 124a ... Edge, 122b, 123b, 1 4b: inclined surface on the opposite side, 122c, 123c, 124c ... inclined surface on the non-opposing side, 126, 127 ... gap, 202 ... oil pan, 204a ... oil level gauge guide, 206 ... oil suction hose, 206a ... tip, 208: Oil storage space, 210: Deep bottom part, 212 ... Stepped part, 214 ... Slope bottom part, 218 ... Oil drain hole, 222 ... Rib, X ... Contact area, Y ... Contact area.

Claims (10)

An oil pan that is disposed under the engine and stores oil in an oil storage space,
An oil pan, wherein a hose tip positioning portion for preventing movement of a tip of the oil suction hose is provided on a bottom surface of the oil pan that comes into contact with an oil suction hose inserted in the oil storage space. 2. The oil pan according to claim 1, wherein the insertion port for inserting the oil suction hose into the oil storage space is an oil level gauge guide. 3. The insertion direction of the oil suction hose is guided obliquely with respect to the bottom surface of the oil pan according to claim 1, and the hose tip positioning portion is first inserted into the oil pan by inserting the oil suction hose. An oil pan, wherein the oil pan is formed as a rib that is provided in front of an initial contact point where the hose tip comes into contact with the bottom surface and restricts movement of the tip of the oil suction hose. 3. The insertion direction of the oil suction hose is guided obliquely with respect to the bottom surface of the oil pan according to claim 1, and the hose tip positioning portion is first inserted into the oil pan by inserting the oil suction hose. An oil pan provided in a circular arc shape with an initial contact point at which the hose tip comes into contact with the bottom surface as a rib for restricting the tip movement of the oil suction hose. 5. The oil pan according to claim 3, wherein a plurality of the ribs are provided. 6. The oil pan according to claim 5, wherein the plurality of ribs are overlapped when viewed from an insertion direction of the oil suction hose. 6. The oil pan according to claim 5, wherein a gap between the plurality of ribs is narrower than a tip end of the oil suction hose when viewed from an insertion direction of the oil suction hose. 8. The rib according to claim 3, wherein the rib is formed as a convex portion on a bottom surface of the oil pan by press working with respect to a metal plate forming the oil pan. 9. Oil pan. The oil according to any one of claims 3 to 8, wherein the rib has an inclined surface on the opposite side in the tip moving direction of the oil suction hose having a larger gradient than an inclined surface on the non-opposing side. Bread. In any 1 item | term of the Claims 1-9, the movement prevention position of the front-end | tip of the said oil suction hose set by the said hose front-end | positioning positioning part is an oil drain by the oil drain hole provided in the oil pan in the perpendicular direction. Oil pan characterized by being set to approximately the same level as the level.

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