JP2002221017A - Oil pan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil pan with a structure allowing suction-up of lubrication oil without leaving impurities such as cut powder inside the oil pan when sucking and changing the lubricating oil inside the oil pan by an oil changer. SOLUTION: In this oil pan 1, a lower part has a passage formation member 3 extending in the longitudinal direction of the oil pan 1, and a space 4 is formed by the passage formation member 3 and the bottom face of the oil pan 1. A cylindrical body 6 is installed on a shallow bottom part 1a of a bottom plate, and a space 8 is formed inside the cylindrical body 6. A through-hole 7 is formed in the bottom plate on the inner side of a fixing part of a lower end part of cylindrical body 6 to communicate the space 4 with the space 8. A deep bottom part 1b of the bottom face is formed with a communication hole 5 to communicate the space 4 with a bulge part 2. By inserting a nozzle 10 of the oil changer into an oil level gauge guide 9, the lubricating oil inside the oil pan 1 is sucked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an improvement in an oil pan.

[0002]

2. Description of the Related Art Conventionally, an oil pan 2 as shown in FIG.
00 is provided at a lower portion of an engine (not shown), and lubricating oil is stored in the oil pan 200.
When replacing the lubricating oil in the oil pan 200, the drain cock 201 provided at the bottom of the oil pan 200 is opened to discharge the old lubricating oil, and then the new lubricating oil is discharged into the oil pan 200. I was doing the work of putting in.

At the gas station, instead of opening the drain cock 201 to discharge the lubricating oil, the oil level gauge guide 202 provided above the oil pan 200 is used to connect the nozzle 203 of the oil changer as a suction machine. By inserting and sucking out the lubricating oil in the oil pan 200, the lubricating oil can be changed in a shorter time.

[0004]

However, in a general engine, the oil level gauge guide is often arranged at the periphery of the engine because of the arrangement of the crankshaft, piston, cylinder and the like. Therefore, in an engine in which the oil level gauge guide is disposed apart from the bulging portion, when the lubricating oil is sucked out by the oil changer, the lubricating oil in the bulging portion 204 formed at the bottom of the oil pan 200 is However, since it is located below the tip of the nozzle 203 of the oil changer, it cannot be completely sucked out and remains in the bulging portion 204. In addition, impurities such as chips generated during the machining process and remaining after cleaning and wear powder generated in sliding portions inside the engine are mixed in the lubricating oil remaining in the bulging portion 204, If new lubricating oil is put into the oil pan 200 in that state, impurities are mixed in the new lubricating oil, and there is a problem that the performance as lubricating oil is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to remove chips contained in an oil pan when the lubricating oil in the oil pan is sucked out by using an oil changer. It is an object of the present invention to provide an oil pan having a structure that can be sucked out without leaving impurities such as.

[0006]

According to the first aspect of the present invention, a lubricating liquid is stored in a lower portion of an engine,
In an oil pan having a residue portion, a liquid passage provided with a suction device insertion portion is provided, and the liquid passage extends to the residue portion, and a communication hole is formed in the vicinity of the residue portion on the liquid passage. Was the gist.

According to a second aspect of the present invention, in the oil pan according to the first aspect, the amount of the lubricating fluid stored is determined by:
The lubricating liquid inspection device is inserted through the lubricating liquid inspection device insertion portion, and can be measured by the lubrication liquid inspection device, and the suction device insertion portion is arranged on an extension of the lubrication liquid inspection device insertion portion. Abstract.

According to a third aspect of the present invention, in the oil pan according to the first or second aspect, when the lubricating liquid is suctioned by the suction device, the liquid passage or the suction device insertion portion and the suction device are connected to each other. The gist was that the space between the two was sealed.

According to a fourth aspect of the present invention, in the oil pan according to any one of the first to third aspects, a swelling portion swelling downward is formed at a bottom portion, and The gist of the reservoir is the bulge.

According to a fifth aspect of the present invention, in the oil pan according to any one of the first to fourth aspects, the liquid passage is connected to the lubricating liquid inspection device insertion portion, and the lubricating liquid inspection is performed. The gist is that the device insertion part is the suction device insertion portion, and in a state where the suction device is inserted in the lubrication liquid inspection device insertion portion, the space between the lubrication liquid inspection device insertion portion and the suction device is sealed. did.

(Operation) According to the first or second aspect of the present invention, when the suction device is inserted into the suction device insertion portion provided in the liquid passage and the lubricating liquid is sucked, the remaining reservoir portion is formed. The impurities accumulated in the liquid flow into the liquid passage through the communication hole, and are sucked by the suction device through the liquid passage.

According to the third or fifth aspect of the present invention, since no gas enters the liquid passage, all the lubricating liquid in the oil pan is sucked.

According to the fourth aspect of the present invention, when the suction device is inserted into the suction device insertion portion provided in the liquid passage and the lubricating liquid is suctioned, impurities accumulated in the bulging portion are removed. The liquid flows into the liquid passage through the communication hole, and is sucked by the suction device through the liquid passage.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 3 show a first embodiment of an oil pan according to the present invention.
It will be described according to.

FIG. 1 is a vertical sectional view of the oil pan 1.
FIG. 2 is a sectional view taken along line AA in FIG. 1 and 2
As shown in FIG. 1, the oil pan 1 is a container having a substantially rectangular horizontal cross-sectional shape, in which lubricating oil is stored.

The bottom plate of the oil pan 1 comprises a shallow bottom portion 1a, a deep bottom portion 1b, and a step portion 1c connecting them. From the lower end of the side wall of one end (left side in FIGS. 1 and 2) of the oil pan 1 in the longitudinal direction, a substantially horizontal shallow bottom 1a is formed.
The step portion 1c which extends to the vicinity of the center of the oil pan 1 in the longitudinal direction, is bent downward and then extends substantially vertically, and is bent again in the horizontal direction to extend substantially horizontally. A bottom 1b is formed.

The sectional shape of the bottom plate with respect to the longitudinal direction of the oil pan 1 is uniform in the width direction of the oil pan 1.

Further, the space surrounded by the step portion 1c, the deep bottom portion 1b, and the side wall of the oil pan 1 is
Swelling downwards to form a swelling portion 2 which is a remaining reservoir.

The remaining portion is, for example, a conventional oil pan 200 as shown in FIG.
3, when lubricating oil is sucked out by inserting the lubricating oil, the lubricating oil cannot be sucked out by the oil changer 203 and a portion where impurities such as chips mixed in the lubricating oil remain.

On the lower side of the oil pan 1, an oil pan 1
Is provided with a passage forming member 3 extending in the longitudinal direction.
The passage forming member 3 extends along the bent shape of the bottom plate of the oil pan 1 from the position slightly spaced from the side wall on the shallow bottom 1a side (the left side in FIGS. 1 and the right side in FIG. 2).

FIG. 3 is a cross-sectional view of a main part BB in FIG. As shown in FIG. 3, the passage forming member 3 has a substantially U-shaped vertical cross section, and both upper ends thereof are fixed to the lower surface of the bottom plate of the oil pan 1 (the outer surface in the step portion 1 c). ing. A space 4 is formed by the passage forming member 3 and a portion of the bottom plate of the oil pan 1 that closes the upper opening of the passage forming member 3. The space 4 is closed by substantially vertical surfaces 3a and 3b formed at the shallow bottom portion 1a side end and the deep bottom portion 1b side end of the passage forming member 3.

A circular communication hole 5 is formed on the deep bottom portion 1b of the bottom plate by penetrating the bottom plate. The communication hole 5 connects the bulging portion 2 and the space 4 to each other.

A cylindrical body 6 extending upward from the oil pan 1 is provided on the shallow bottom portion 1a of the bottom plate.
Is formed inside. The lower end of the cylindrical body 6 is fixed to the upper surface of the shallow bottom 1 a of the bottom plate of the oil pan 1.

On the bottom plate of the oil pan 1, the bottom plate inside the circular fixed portion to which the lower end of the cylindrical body 6 is fixed is cut out along the fixed portion, and the circular through hole 7 is formed. Are formed. The space 8 in the cylindrical body 6 and the space 4 formed by the passage forming member 3 communicate with each other through the through hole 7.

Lubricating oil flows in the space 4 and the space 8, and the passage forming member 3 forming the space 4 and a portion for closing the upper opening of the passage forming member 3 are formed. A liquid passage is formed by the bottom plate of the oil pan 1 and the cylindrical body 6 forming the space 8.

The upper end of the cylindrical body 6 is
Above, is connected to a lower portion of an oil level gauge guide 9 fixed to a cylinder block (not shown).

The oil level gauge guide 9 is formed of a cylindrical member, and serves as an insertion portion for inserting an oil level gauge (a device for measuring the height of the oil level) as a lubricating liquid inspection device from the outside.

A pair of small holes 9a on the left and right sides is formed in the lower part of the oil level gauge guide 9 and in a portion arranged in the oil pan 1, and the inside and outside of the peripheral wall of the oil level gauge guide 9 are formed. Communicating.

Next, the operation of the oil pan 1 configured as described above when exchanging the lubricating oil in the oil pan 1 will be described.

A nozzle 10 of an oil changer as a suction machine is inserted from an oil level gauge guide 2 disposed above the oil pan 1. Then, as shown in FIG. 1, the nozzle 10 is disposed such that the tip end portion thereof is located in the cylindrical body 6. In this state, the seal member 11 is disposed at the upper end of the oil level gauge guide 9 to seal the gap between the outer peripheral surface of the nozzle 10 and the inner peripheral surface of the oil level gauge guide 9.

In this state, the oil changer is operated. Then, lubricating oil is sucked from the suction port 10a at the tip of the nozzle 10 of the oil changer. Then, the lubricating oil in the oil pan 1 flows into the space 4 in the liquid passage through the communication hole 5 formed in the deep bottom portion 1b of the bottom plate.
After flowing through the inside, it goes to the suction port 10a of the nozzle 10 and is sucked through the suction port 10a.

At this time, impurities such as chips collected in the bulging portion 2 of the oil pan 1 are relatively strongly sucked through the communication hole 5 formed in the vicinity of the bulging portion 2, so that the lubricating oil contains the impurities. It is absorbed by the nozzle 10 of the oil changer.

When the lubricating oil in the oil pan 1 is sucked by the oil changer, the level of the lubricating oil in the oil pan 1 gradually decreases, but the oil level gauge guide 9 and the nozzle of the oil changer The gap between 10 is sealed by the seal member 11, and the space 8 in the cylindrical body 6 contains only limited air flowing from the small holes 9 a formed in the oil level gauge guide 9. The lowering speed of the oil level in the cylinder 6 is lower than the lowering speed of the oil level outside the cylindrical body 6.

Therefore, the oil level in the cylindrical body 6 is
If the oil level outside the cylindrical body 6 is lower than the height of the tip of the nozzle 10,
Lubricating oil continues to be sucked.

The lowering speed of the oil level in the cylinder 6 as compared with the lowering speed of the oil level outside the cylinder 6 is as follows.
It is affected by the suction force of the oil changer and the size of the small hole 9a. If the suction force of the oil changer is strong, the speed of lowering the oil level in the cylindrical body 6 is relatively slow. The speed of the fall is faster.

In the present embodiment, by adjusting the suction force of the oil changer and the size of the small hole 9a, until all the lubricating oil in the oil pan 1 is sucked.
The oil level in the cylinder 6 is set to be maintained at a position higher than the tip of the nozzle 10.

Therefore, all the lubricating oil in the oil pan 1 is sucked by the oil changer without remaining in the bulging portion 2.

Then, a new lubricating oil is put into the oil pan 1 and the exchange of the lubricating oil is completed.

When measuring the oil level of the lubricating oil in the oil pan 1, an oil level gauge (not shown) is inserted into the oil level gauge guide 9 for measurement. Since the small holes 9 a are formed in the peripheral wall of the cylinder 9, the height of the oil level of the lubricating oil in the cylinder 6 and the level of the oil level of the lubricating oil in the oil pan 1 outside the cylinder 6 are uniform. The height of the oil level can be measured accurately.

Next, the oil pan 1 constructed as described above
Are described below.

(1) A liquid passage is provided in the oil pan 1, a communication hole 5 is formed in the vicinity of the bulging portion 2 on the liquid passage, and the oil passage is used as an oil level gauge guide 9 as a suction device insertion portion.
From the oil level gauge guide 9,
By inserting the oil changer 10 into the liquid passage and suctioning the lubricating oil, impurities such as cutting chips accumulated in the bulging portion 2 can be sucked out by the oil changer together with the old lubricating oil, and the oil is newly inserted. It is possible to prevent a decrease in the performance of the lubricating oil.

(2) When lubricating oil is sucked by the oil changer, the space between the outer peripheral surface of the nozzle 10 of the oil changer and the inner peripheral surface of the oil level gauge guide 9 is sealed by the seal member 11, so that the space 4 in the liquid passage is formed. Air does not enter the inside of the oil pan, and all the lubricating oil in the oil pan 1 can be sucked by the oil changer, so that the performance of the newly added lubricating oil can be prevented from lowering.

(3) Since the small hole 9a is formed in the lower part of the oil level gauge guide 9, the height of the oil level inside the cylinder 6 and the height of the oil level outside the cylinder 6 can be made uniform. The oil level gauge can accurately measure the level of the lubricating oil.

(Second Embodiment) Next, a second embodiment of the oil pan of the present invention will be described with reference to FIGS. Note that the portions having the same numbers as those in the first embodiment have the same operation, and thus description thereof is omitted.

FIG. 4 is a vertical sectional view of the oil pan 20. As shown in FIG. 4, the bottom plate of the oil pan 20 is provided on the extension line of the level gauge guide 9 with the suction device insertion portion 2.
1 is arranged.

FIG. 5 is a sectional view showing a main part near the suction unit insertion part 21. FIG. 6 is a sectional view taken along line CC in FIG. FIG.
As shown in FIG. 6, the suction device insertion portion 21 has a substantially quadrangular prism shape, and its lower end is fixed to the upper surface of the shallow bottom portion 1a of the bottom plate of the oil pan 20 on the liquid passage. I have.

In the center of the suction device insertion portion 21 when viewed from above, the suction device insertion portion 2 is positioned from the lower surface of the suction device insertion portion 21.
A circular hole 22, which is a column-shaped hole, reaching the vicinity of the center in the height direction of No. 1 is formed. In addition, above the circular hole 22, a conical hole 2 which spreads radially as it goes upward.
3 are formed.

The circular hole 22 is opened below the suction device insertion portion 21 and is formed in the shallow bottom portion 1 a of the bottom plate of the oil pan 20.
Above, it communicates with the space 4 formed by the passage forming member 3 via a circular through hole 1d formed at a position corresponding to the position of the circular hole 22.

The conical hole 23 communicates with the upper end of the circular hole 22 at the lower end thereof.
Has an upper end opening above the suction device insertion portion 21.
Further, by forming the conical hole 23, a taper surface is formed in the suction device insertion portion 21.

In the vicinity of the center of the circular hole 22 in the height direction, as shown in FIG. 5, an annular concave portion 24 is formed so as to make a round along the inner peripheral surface of the circular hole 22. An annular seal member 25 is arranged in the annular recess 24.

Next, the oil pan 2 constructed as described above is used.
At 0, the operation of replacing the lubricating oil in the oil pan 20 will be described.

The nozzle 10 of the oil changer is inserted from the oil level gauge guide 9 disposed above the oil pan 20. Then, when the tip of the nozzle 10 is directly inserted into the circular hole 22 formed in the suction device insertion portion 21 or is slightly displaced from the circular hole 22,
After the tip of the nozzle 10 comes into contact with the tapered surface of the conical hole 23, the nozzle 10 moves along the tapered surface and is similarly inserted into the circular hole 22. The tip of the nozzle 10 is shown in FIG.
Is arranged at the position shown in FIG. In this state, the outer peripheral surface of the nozzle 10 comes into contact with the annular seal member 25, and the gap between the outer peripheral surface of the nozzle 10 and the peripheral surface of the circular hole 22 is sealed.

Then, the oil changer is operated. Then, lubricating oil is sucked from the suction port 10a at the tip of the nozzle 10 of the oil changer. Then, the lubricating oil in the oil pan 20 passes through the communication hole 5 formed in the deep bottom portion 1b of the bottom plate, flows into the space 4 in the liquid passage, flows through the space 4, and goes to the suction port 10a of the nozzle 10. Is sucked through the suction port 10a.

At this time, the bulging portion 2 of the oil pan 20 is
Impurities such as swarf accumulated in the lubricating oil are also included in the lubricating oil to be sucked and sucked by the oil changer.

When lubricating oil in the oil pan 20 is sucked by the oil changer, the oil level of the lubricating oil in the oil pan 20 gradually decreases. However, the circumferential surface of the circular hole 22 formed in the suction device insertion portion 21 and the outer circumferential surface of the nozzle 10 of the oil changer are formed by an annular seal member 25.
Air is prevented from entering into the space 4 in the liquid passage. Therefore, even if the oil level outside the liquid passage becomes lower than the height of the tip of the nozzle 10, the inside of the liquid passage is The height of the oil surface is higher than the height of the tip of the nozzle 10, and all the lubricating oil in the oil pan 20 is sucked.

Then, new lubricating oil is put into the oil pan 20, and the replacement is completed.

Next, the oil pan 2 constructed as described above
The features of 0 are described below.

(1) A liquid passage is provided in the oil pan 20,
Since the communication hole 5 is formed near the bulging portion 2 on the liquid passage and the suction device insertion portion 21 is provided on the liquid passage, the nozzle 10 of the oil changer is inserted into the suction device insertion portion 21 to supply the lubricating oil. When the suction is performed, impurities such as cutting chips accumulated in the bulging portion 2 can be sucked out together with the old lubricating oil by the oil changer, and the deterioration of the performance of the newly inserted lubricating oil can be prevented.

(2) When lubricating oil is sucked by the oil changer, the outer circumferential surface of the nozzle 10 of the oil changer and the circumferential surface of the circular hole 22 formed in the suction device insertion portion 21 are sealed by an annular seal member 25. Therefore, no air enters the space 4 in the liquid passage, and the oil pan 2
All the lubricating oils within 0 can be sucked out, and the performance of newly added lubricating oils can be prevented from deteriorating.

(3) Since the conical hole 23 is formed above the circular hole 22 formed in the suction device insertion part 21, even when the nozzle 10 of the oil changer is inserted into the circular hole 22, some deviation may occur. Since the tip of the nozzle 10 moves toward the circular hole 22 by the tapered surface of the conical hole 23,
The work of inserting the nozzle 10 into the circular hole 22 is facilitated.

(Third Embodiment) A third embodiment of the oil pan according to the present invention will be described below with reference to FIGS.

In this embodiment, a new member is added in the vicinity of the small hole 9a formed in the oil level gauge guide 9 in the oil pan 1 of the first embodiment. It is the same as the oil pan 1 of the first embodiment.

FIG. 7 is a sectional view showing a main part near the oil level gauge guide 9. As shown in FIG. 7, a plate-shaped sealing member 41 is provided on the inner peripheral surface of the oil level gauge guide 9 near a small hole 9a formed in the oil level gauge guide 9.
Is provided.

The plate-shaped sealing member 41 is a substantially rectangular plate-shaped sealing member extending in the vertical direction of the oil level gauge guide 9. Further, the width of the plate-shaped seal member 41 is formed to be equal to or slightly larger than the diameter of the small hole 9a. The upper part of the plate-shaped seal member 41 is fixed to the inner peripheral surface of the oil level gauge guide 9 above the upper end of the small hole 9 a formed in the oil level gauge guide 9. The lower portion of the plate-shaped sealing member 41 is provided with the small hole 9.
In the vicinity of the upper end of “a”, it is bent toward the center axis of the oil level gauge guide 9. Then, in that state, the small hole 9a is in an open state.

FIG. 8 shows the state of the oil level gauge guide 9 from the state shown in FIG.
Shows a state in which is inserted. As shown in FIG. 8, when the lubricating oil in the oil pan is sucked, the nozzle 10 of the oil changer is used.
Is inserted into the oil level gauge guide 9, the plate-shaped seal member 41 is in a state of extending straight along the inner peripheral surface of the oil level gauge guide 9. Further, the plate-shaped sealing member 41 comes into close contact with the outer peripheral surface of the nozzle 10 and the inner peripheral surface of the oil level gauge guide 9, and the plate-shaped sealing member 4
The small hole 9a is closed by the lower part of the hole 1.

The oil pan configured as described above has a first
The oil pan 1 according to the embodiment has the features (1) to (3), and additionally has the features described below. (1) Small hole 9 formed in oil level gauge guide 9
a is provided with a lid structure composed of a plate-shaped sealing member 41,
When lubricating oil is sucked by the oil changer, the small holes 9a formed in the oil level gauge guide 9 are closed by the plate-shaped sealing member 41, so that air does not enter the space 8 in the cylindrical body 6, and Thereby, lubricating oil can be efficiently sucked.

The embodiments of the present invention are not limited to the above embodiments, but may be implemented as follows.

In the third embodiment, the small hole 9a formed in the oil level gauge guide 9 is provided with the lid structure composed of the plate-shaped sealing member 41. Instead of providing the lid structure, As shown in FIG. 9, the inner diameter of the oil level gauge guide 50 is
When the nozzle 10 is inserted into the oil level gauge guide 50, the small hole 50a formed in the oil level gauge guide 50 is closed by the outer peripheral surface of the nozzle 10. Even if it does, the same effect can be obtained.

In the second embodiment, the annular concave portion 24 is formed in the suction device insertion portion 21 and the annular seal member 25 is provided in the annular concave portion 24. Instead, as shown in FIG. Thus, near the tip of the nozzle 60 of the oil changer, the annular recess 6 is formed along the outer peripheral surface.
1 and an annular sealing member 62 is formed in the annular recess 61.
The same effect can be obtained by arranging.

In the first embodiment, the liquid passage is formed by fixing the passage forming member 3 to the lower surface of the bottom plate of the oil pan 1. However, as shown in FIG. The liquid passage may be configured by fixing the liquid passage to the upper surface of the bottom plate of the oil pan. Note that FIG.
Although the communication hole 31 is formed in the side surface of the passage forming member 30 on the center side of the oil pan, the position where the communication hole 31 is formed is not limited to the above-described position. The communication hole 31 may be formed on the upper side surface of the oil pan 30 or the side surface on the side wall of the oil pan.

In the above embodiment, only one communication hole is formed in the liquid passage. However, the present invention is not limited to this, and a plurality of communication holes may be formed.

In the above embodiment, the single liquid passage is used. However, the present invention is not particularly limited to this, and a plurality of liquid passages may be provided.

In the above embodiment, the bulging portion 2 is the remaining portion, but the remaining portion is not limited to the bulging portion 2. For example, as shown in FIG. 12, when the bottom plate 71 of the oil pan 70 is an oil pan 70 having a shape formed by an inclined plane,
When the oil pan 70 shown in FIG. 12 is not provided with a liquid passage as in the conventional case, the space 72 below the tip of the nozzle 10 of the oil changer is filled with lubricating oil that cannot be sucked by the oil changer and lubricating oil. Since impurities such as chips mixed in the oil remain,
The space 72 serves as a residual portion.

In the first embodiment, the communication hole 5 is
And at the position shown in FIG.
Is formed in the vicinity of the residual portion, as long as the lubricating oil in the residual portion can be sucked out. For example, as shown in FIG. 13, a communication hole 81 may be formed below the step portion 1c.
.

In the above-described embodiment, the space between the nozzle 10 of the oil changer and the suction device insertion portion is sealed. However, the sealing is not necessarily required.
As shown in FIG. 7, the suction device insertion portion 91 having a shape in which the upper part of the cylindrical body 6 in the first embodiment is removed.
It may be.

In the above-described embodiment, the gap between the nozzle 10 of the oil changer and the insertion portion of the suction device is sealed. The effect of is obtained.

In the above embodiment, the liquid passage provided in the lower portion of the oil pan is constituted by the passage forming member 3. Instead, the oil pan is formed by resin molding and the oil pan is formed. Set the thickness of the bottom plate to be relatively thick, and
The liquid passage below the oil pan may be formed by disposing the core.

[0078]

According to the first, second or fourth aspect of the present invention, it is possible to prevent a decrease in the performance of a newly added lubricating liquid.

In addition, according to the third or fifth aspect of the present invention, it is possible to further prevent the performance of the newly added lubricating liquid from deteriorating.

[Brief description of the drawings]

FIG. 1 is a sectional view of an oil pan 1 according to a first embodiment.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a cross-sectional view of a BB main part in FIG. 1;

FIG. 4 is a sectional view of an oil pan 20 according to a second embodiment.

FIG. 5 is a cross-sectional view of a main part in the vicinity of a suction device insertion section 21 in a second embodiment.

FIG. 6 is a sectional view taken along the line CC in FIG. 4;

FIG. 7 is a sectional view of an essential part of an oil pan according to a third embodiment.

FIG. 8 is a cross-sectional view of a main part for explaining the operation.

FIG. 9 is a sectional view of a main part of an oil pan according to another embodiment.

FIG. 10 is a sectional view of an essential part of an oil pan according to still another embodiment.

FIG. 11 is a sectional view of an essential part of an oil pan according to still another embodiment.

FIG. 12 is a sectional view of a main part of an oil pan 70 according to still another embodiment.

FIG. 13 is a sectional view of a main part of an oil pan according to still another embodiment.

FIG. 14 is a sectional view of an essential part of an oil pan according to still another embodiment.

FIG. 15 is a sectional view of a conventional oil pan 200.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... oil pan, 2 ... bulging part as a residual part, 3 ... passage formation member which comprises a part of liquid passage, 5 ... communication hole, 6 ...
A cylindrical body constituting a liquid passage, 9: an oil level gauge guide as a suction device insertion portion, 10: a nozzle of an oil level changer as a suction device, 11: a sealing member.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) F16N 31/00 F16N 31/00 D

Claims (5)

[Claims] 1. An oil pan disposed at a lower portion of an engine for storing a lubricating liquid and having a remaining portion, wherein a liquid passage having a suction device insertion portion is provided, and the liquid passage extends to the remaining portion. An oil pan, wherein a communication hole is formed in the vicinity of the remaining portion on the liquid passage. 2. The oil pan according to claim 1, wherein the stored amount of the lubricating liquid can be measured by a lubricating liquid tester inserted through a lubricating liquid tester insertion portion. The oil pan, wherein the suction device insertion part is disposed on an extension of the lubricating liquid tester insertion part. 3. The oil pan according to claim 1, wherein when the lubricating liquid is sucked by the suction device, a space between the liquid passage or the suction device insertion portion and the suction device is sealed. An oil pan, characterized by: 4. The oil pan according to claim 1, wherein a bottom portion has a bulging portion bulging downward, and the remaining portion has a bulging portion. An oil pan characterized by being a part. 5. The oil pan according to claim 1, wherein the liquid passage is connected to the lubricating fluid tester insertion portion, and the lubricating fluid tester insertion portion is connected to the suction device. An oil pan as an insertion portion, wherein, when the suction device is inserted into the lubricant inspection device insertion portion, the space between the lubricant inspection device insertion portion and the suction device is sealed.