JP2009275675A - Oil storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide a two-tank type oil pan structure capable of sufficiently promoting heating and sufficiently performing oil exchange work. <P>SOLUTION: The oil pan (31) is constituted so as to store the oil at an inner side of a recess part (310), and a drain hole (311) is formed on a bottom part. An oil pan separator (32) is abutted/arranged on a bottom surface (310a) of the recess part (310) so as to form a second chamber (3b) having the drain hole at a side of a first chamber (3a). On the oil pan separator (32), an oil discharge port (327) for discharging the oil from a bottom part of the first chamber toward a bottom part of the second chamber is formed. A one-way valve (33) is constituted such that it allows a flow of the oil directed from the bottom part of the first chamber to the bottom part of the second chamber on an oil discharge port, whereas it suppresses the flow of the oil directed from the bottom part of the second chamber to the bottom part of the first chamber. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an oil storage device configured to store oil for lubrication of a lubricated mechanism (for example, an engine main body or an automatic transmission mechanism).

  In this type of oil storage device, a so-called two-tank oil pan structure is widely known. This two-tank oil pan structure is, for example, disclosed in Japanese Utility Model Laid-Open No. 55-36799, Japanese Utility Model Laid-Open No. 56-169406, Japanese Utility Model Laid-Open No. 62-38408, Japanese Utility Model Laid-Open No. 4-1613, Japanese Patent Laid-Open No. 2001-2001. No. 1,23813, JP-A 2006-105118, and the like. In such a two-tank oil pan structure, the oil pan is partitioned into a first chamber and a second chamber by a partition wall (sometimes referred to as an inner oil pan or an oil pan separator).

According to this configuration, when cold, the oil in the first chamber is exclusively used for lubrication. That is, the amount of oil used (circulation amount) during warm-up is reduced. Thereby, progress of warming-up is promoted and the fuel consumption improvement effect is acquired. On the other hand, when warm, the oil in the first chamber and the second chamber is used for lubrication. Thereby, good lubrication after warm-up is realized.
Japanese Utility Model Publication No. 55-36799 Japanese Utility Model Publication No. 56-169406 Japanese Utility Model Publication No. 62-38408 Japanese Utility Model Publication No. 4-1613 JP 2001-123813 A JP 2006-105118 A

  Conventionally, in the above-described two-tank oil pan structure, it has been difficult to simultaneously achieve warm-up promotion and oil exchange workability. That is, in order to achieve both at the same time, for example, as disclosed in Japanese Utility Model Laid-Open No. 62-38408 and Japanese Patent Application Laid-Open No. 2006-105118, a special configuration is provided for both the oil pan and the partition wall. The cost of the apparatus has been high. On the other hand, when such a special configuration is not provided, there is a problem that a considerable amount of old oil remains in the first chamber when the oil is discharged. For this reason, practical use (application to a commercial vehicle) of this kind of 2 tank type oil pan structure was prevented.

  The present invention has been made to solve the above-described problems. That is, an object of the present invention is to provide a two-tank type oil pan structure that is favorably promoted in warm-up and that performs oil replacement work at low cost.

<Configuration>
The oil storage device of the present invention is configured to store oil for lubrication of the lubrication target mechanism. The oil storage device includes an oil pan, an oil pan separator, and a one-way valve.

  The oil pan has a recess opening toward the lubrication mechanism, and is configured to store the oil inside the recess. A drain hole which is a through hole for discharging the oil is formed at the bottom of the oil pan. The drain hole is provided at a position where the oil stored in the space inside the recess can reach smoothly by the action of gravity, and specifically, can be provided at a corner of the oil pan. .

  The oil pan separator is arranged to divide (divide) the space inside the recess into a first chamber and a second chamber. The first chamber is provided so as to open toward the lubricated mechanism. An oil inlet is disposed in the first chamber. The oil suction port is connected to an oil pump for supplying the oil toward the lubricated mechanism. The drain hole is disposed in the second chamber.

  In the oil storage device, the oil in the first chamber is exclusively supplied to the lubricated mechanism during the warming up of the lubricated mechanism, and the first chamber and the oil storage device are warmed up after the warmed up mechanism. The oil in the second chamber may be configured to be supplied to the lubricated mechanism.

  In the present oil storage device, the second chamber is formed on the side of the first chamber by arranging the oil pan separator so as to contact the bottom surface of the recess. For example, the oil pan separator includes a cylindrical side plate, and the oil pan separator is disposed so that the lower end of the side plate is in contact with the bottom surface of the recess, so that the substantially donut-shaped second chamber is formed. May be formed to surround the side of the first chamber.

  The oil pan separator is formed with an oil discharge port for discharging the oil from the bottom of the first chamber toward the bottom of the second chamber. The oil discharge port may be provided at a position close to the drain hole.

  The oil storage device can smoothly move from the bottom of the first chamber to the bottom of the second chamber through the oil discharge port under the action of gravity (in other words, in the first chamber). The oil on the bottom surface can be configured to move smoothly onto the bottom surface of the second chamber under the action of gravity and reach the drain hole). Specifically, the oil pan and the oil pan separator can be configured such that the bottom surface of the first chamber and the bottom surface of the second chamber are continuous (via the oil discharge port).

  For example, the lower end of the side plate may be provided with a notch that opens toward the bottom surface of the recess. In this case, the oil discharge port includes a through hole formed by the bottom surface and the cutout portion when the side plate contacts the bottom surface of the recess.

  The one-way valve may be attached to the oil pan separator. The one-way valve is configured to substantially restrict the oil flow at the oil discharge port in one direction. That is, the one-way valve allows the oil to flow from the bottom (bottom) of the first chamber to the bottom (bottom) of the second chamber, while from the bottom of the second chamber to the first chamber. The flow of the oil toward the bottom of the oil is suppressed (restricted or substantially prohibited).

  Specifically, the one-way valve may be configured as follows: The one-way valve includes a swing plate that is a plate-like member that is swingably supported by the oil pan separator. An operation of opening the oil discharge port by allowing the free end portion of the swing plate to swing from the first chamber toward the second chamber is allowed, while the free end portion is The one-way valve is configured so that the operation of opening the oil discharge port is restricted (prohibited) by swinging from the two chambers toward the first chamber.

<Action and effect>
In this configuration, the oil pan is partitioned into the first chamber and the second chamber by the oil pan separator. The one-way valve restricts (substantially prohibits) the flow of the oil from the second chamber to the first chamber at the oil discharge port. Therefore, when the oil is cold, the oil in the first chamber is exclusively used for lubrication of the lubrication mechanism, while when warm, the oil in the first chamber and the second chamber is used for lubrication of the lubrication mechanism. The operation of being performed can be performed satisfactorily.

  Further, in this configuration, during the oil discharging operation for oil replacement, the oil from the first chamber to the second chamber having the drain hole at the oil discharging port is caused by the one-way valve. Is allowed to flow. For this reason, the oil in the first chamber can be satisfactorily flowed out to the second chamber through the oil discharge port, and can be finally discharged to the outside of the oil pan through the drain hole.

  Here, the one-way valve has a relatively simple structure (for example, a swinging plate supported so as to be swingable). Therefore, the device configuration of the oil storage device can be relatively simple. Further, even if the oil pan is of a regular production, the above-described configuration can be realized.

  Therefore, according to the oil storage device of the present invention, it is possible to provide a two-tank oil pan structure in which warm-up is favorably promoted and oil exchange work is favorably performed at low cost.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the present invention (an embodiment that the applicant considers best at the time of filing of the present application) will be described with reference to the drawings.

  In addition, the description about the following embodiment is specific to the extent possible, merely an example of the embodiment of the present invention in order to satisfy the description requirement (description requirement / practicability requirement) of the specification required by law. It is only what is described in. Therefore, as will be described later, it is quite natural that the present invention is not limited to the specific configurations of the embodiments described below. Modifications to the embodiments are listed together at the end, as insertions during the description of the embodiment impede understanding of the description of the consistent embodiment.

<Schematic configuration of the embodiment>
FIG. 1 is a side sectional view showing a schematic configuration of an engine 1 to which an embodiment of the present invention is applied. Referring to FIG. 1, the engine 1 includes an engine block 2 and an oil storage device 3.

  Inside the engine block 2 as the lubrication mechanism of the present invention, a lubricated member such as a camshaft, piston, crankshaft or the like is accommodated. The lower end of the engine block 2 opens downward and is closed by the oil storage device 3. That is, the oil storage device 3 of the present embodiment is connected to the engine block 2 so that the oil used for lubrication in the engine block 2 can be recovered by the action of gravity.

  The oil storage device 3 is configured to store oil for lubricating the engine block 2. The oil storage device 3 has a so-called two-tank oil pan structure, and a first chamber 3a and a second chamber 3b are formed therein. The first chamber 3a is provided in an open state toward the engine block 2 so that oil that descends (returns) under the action of gravity after being lubricated in the engine block 2 can flow in. It has been. An oil strainer 21 as an oil suction port of the present invention is disposed at the bottom of the first chamber 3a.

  The oil strainer 21 is connected to an oil pump 22 provided in the engine block 2 via an oil transport pipe 23. The oil pump 22 is configured to be able to supply oil toward the above-described lubricated member provided inside the engine block 2.

<Configuration of Oil Storage Device of Embodiment>
Hereinafter, the configuration of the oil storage device 3 of the present embodiment will be described in more detail. The oil storage device 3 includes an oil pan 31, an oil pan separator 32, and a one-way valve 33. In the oil storage device 3, the oil in the first chamber 3 a is exclusively supplied to the engine block 2 during the warm-up of the engine 1, while the first chamber 3 a and the second chamber 3 b after the engine 1 is warmed up. The internal oil is configured to be supplied to the engine block 2.

<< Oil pan >>
The oil pan 31 is a bathtub-shaped member having a recess 310 that opens toward the engine block 2 and is integrally formed by pressing a metal plate. The oil pan 31 is configured such that oil is stored inside the recess 310. The bottom surface 310a of the concave portion 310 constitutes the bottom surface of the first chamber 3a and the second chamber 3b as will be described later, and is the lowest position of the concave portion 310 when the engine 1 is loaded on the vehicle (in the oil pan 31). When the drain plug 312 is removed from the drain hole 311 provided at the position where the oil of the oil reaches smoothly without any stagnation due to the action of gravity, the oil at the bottom of the first chamber 3a and the second chamber 3b acts on the action of gravity. Therefore, it can move toward the drain hole 311 smoothly.

  The drain hole 311 is a through hole formed at a corner of the bottom plate 313 of the oil pan 31. A cylindrical side plate 314 is provided so as to protrude upward from the end edge portion of the bottom plate 313. That is, the above-described recess 310 is formed by the bottom plate 313 and the side plate 314.

<< Oil pan separator >>
The oil pan separator 32 is integrally formed of a synthetic resin (for example, glass fiber reinforced nylon) having good strength and heat resistance. The oil pan separator 32 includes a cylindrical side plate 321. That is, an opening that opens downward in the figure is formed by the lower edge of the side plate 321.

  In the present embodiment, the side plate 321 is provided such that the lower end thereof is in contact with the bottom surface 310 a of the recess 310 so that the above-described opening is substantially closed. With the arrangement of the side plate 321 (oil pan separator 32), the space inside the recess 310 surrounds the first chamber 3a inside the oil strainer 21 and the first chamber 3a outside and laterally. And is divided into a second chamber 3b having a drain hole 311 in the lowest part.

  A top plate 322 is provided so as to protrude outward from the side plate 321. The top plate 322 defines the upper end of the second chamber 3b, and can receive a part of the oil that is lubricated in the engine block 2 and falls by the action of gravity above the second chamber 3b. (The lower ends of the first chamber 3a and the second chamber 3b are defined by the bottom plate 313 of the oil pan 31).

  The top plate 322 is provided with a communication hole 323 so as to communicate the second chamber 3b with the space above it. An opening / closing valve 324 is attached to the communication hole 323. The on-off valve 324 is configured to open and close in accordance with the warming-up state of the engine 1. Specifically, in this embodiment, the on-off valve 324 has a so-called thermostat valve structure, and opens when the temperature of the oil received by the top plate 322 exceeds a predetermined temperature. It is configured.

  A communication hole 325 including a relatively large through hole is provided in the upper part of the side plate 321. The communication hole 325 allows the oil in the upper part of the second chamber 3b to flow when the on-off valve 324 is opened and oil flows into the second chamber 3b from above and the oil level in the second chamber 3b rises. It is formed so that the oil inside the oil storage device 3 can be circulated by being guided into the first chamber 3a.

  A cutout portion 326 is provided at a position near the drain hole 311 at the lower end of the side plate 321 so as to open toward the bottom surface 310 a of the recess 310. The oil discharge port 327 is a through hole formed by the bottom surface 310a and the notch 326 when the side plate 321 contacts the bottom surface 310a of the recess 310, and the bottom of the second chamber 3b from the bottom of the first chamber 3a. It is provided so that oil can be discharged toward The bottom of the first chamber 3a passes through the oil discharge port 327 by the action of gravity due to the bottom surface of the first chamber 3a and the bottom surface of the second chamber 3b being continuous via the oil discharge port 327. It can move smoothly without stagnation toward the bottom (bottom surface) of the second chamber 3b.

  A support portion 328 is provided on the outer wall of the side plate 321 so as to protrude outward. The support portion 328 is configured to support the one-way valve 33 so as to be swingable outside the side plate 321.

<< One-way valve >>
The one-way valve 33 is attached to a side plate 321 in the oil pan separator 32. The one-way valve 33 is configured to substantially restrict the oil flow at the oil discharge port 327 in one direction. That is, the one-way valve 33 allows oil to flow from the bottom of the first chamber 3a to the bottom of the second chamber 3b, while the oil flowing from the bottom of the second chamber 3b to the bottom of the first chamber 3a. It is configured to substantially inhibit flow.

  Specifically, the one-way valve 33 includes a swing plate 331. The swing plate 331 is a plate-shaped member made of a synthetic resin (eg, glass fiber reinforced nylon) having a higher specific gravity than oil and good heat resistance, and is formed slightly larger than the oil discharge port 327. In the present embodiment, the swing plate 331 is disposed outside the side plate 321 of the oil pan separator 32 (on the second chamber 3b side).

  A pin 331a is provided at the center of swing at the upper end of the swing plate 331 so as to protrude sideways. The pin 331a is rotatably supported by a support portion 328. That is, the swing plate 331 is supported by the support portion 328 so that the free end 331b at the lower end thereof can swing about the pin 331a.

  The one-way valve 33 can open the oil discharge port 327 when the free end 331b of the swing plate 331 swings from the first chamber 3a toward the second chamber 3b (rightward in the drawing). It is configured as follows. On the other hand, the one-way valve 33 is configured such that the edge of the swing plate 331 is in contact (contact) with the outer portion of the oil discharge port 327 on the outer wall of the side plate 321 of the oil pan separator 32. Configured to close. That is, the one-way valve 33 cannot operate to open the oil discharge port 327 by swinging the free end 331b from the position shown in FIG. 1 toward the first chamber 3a from the second chamber 3b. It is configured to be (prohibited).

<Operation of Configuration of Embodiment>
FIG. 2 is a side cross-sectional view showing the open state of the one-way valve 33 shown in FIG. Hereinafter, the outline of the operation according to the above-described configuration will be described separately with reference to FIG. 1 and FIG. 2, (1) when new oil is injected, (2) when the engine is operating, and (3) when oil is discharged.

<< 1: When new oil is injected >>
By removing a filler cap (not shown) provided at the upper end of the engine block 2, an oil filling port (not shown) is opened. New oil is injected into the engine 1 from the oil filling port. At this time, it is assumed that the old oil in the oil storage device 3 has been discharged. That is, the oil storage device 3 is in a state where no oil is stored.

  The injected new oil passes through the inside of the engine block 2 and reaches the first chamber 3 a in the oil storage device 3. When new oil is injected into the first chamber 3a in this way, the oil level in the first chamber 3a is higher than that in the second chamber 3b. While there is such a difference in oil level, the rocking plate 331 is biased in the right direction in the figure by the differential pressure between the two, and as shown in FIG. The end 331b swings in the right direction in the figure. The oil discharge port 327 is opened by the swing of the swing plate 331. That is, the one-way valve 33 is opened. Thereby, the new oil in the first chamber 3a flows into the second chamber 3b.

  When the difference in oil level between the first chamber 3 a and the second chamber 3 b disappears after the injection of new oil into the engine 1, the free end 331 b of the swing plate 331 hits the side plate 321 due to its own weight. It swings in the left direction in the figure until it comes into contact (see FIG. 1). By the swing of the swing plate 331, the oil discharge port 327 is closed as shown in FIG. That is, the one-way valve 33 is closed.

<< 2: During engine operation >>
As shown in FIG. 1, the engine 1 is started with the one-way valve 33 closed. When the engine 1 is started, the oil pump 22 is driven, and the oil in the first chamber 3 a is sucked out through the oil strainer 21. Thereby, the oil level of the first chamber 3a is lower than that of the second chamber 3b, and a difference in oil level occurs between the first chamber 3a and the second chamber 3b.

  At this time, the closed state of the one-way valve 33 is maintained during the operation of the engine 1 (particularly during the warm-up operation) by the differential pressure between the first chamber 3a and the second chamber 3b based on the difference in the oil level. Is done. That is, the one-way valve 33 substantially prohibits the oil flow from the second chamber 3b to the first chamber 3a at the oil discharge port 327. Thereby, progress of warm-up is promoted.

  The oil sucked out from the first chamber 3 a and used for lubricating the engine block 2 is heated by absorbing heat in the engine block 2. This heated oil returns to the oil storage device 3 by the action of gravity. When the engine block 2 is sufficiently warmed up and the temperature of the oil returning to the oil storage device 3 rises to a predetermined temperature, the on-off valve 324 is opened. By opening the on-off valve 324, a part of the oil returning to the oil storage device 3 is also introduced into the second chamber 3b, and the oil level in the second chamber 3b increases.

  Thus, when the oil level in the second chamber 3b rises, the oil in the second chamber 3b flows into the first chamber 3a through the communication hole 325. Thereby, the oil is circulated after warming up. That is, the oil in the second chamber 3b is supplied to the engine block 2 after flowing into the first chamber 3a.

<< 3: When oil is discharged >>
When the old oil in the oil storage device 3 is discharged after the engine 1 is stopped, the drain hole 311 is opened by removing the drain plug 312 from the drain hole 311. Then, the oil in the second chamber 3b is discharged to the outside through the drain hole 311. As a result of the oil in the second chamber 3b being discharged in this way, the oil level in the second chamber 3b is lowered.

  When the oil in the second chamber 3b is discharged and the oil level in the second chamber 3b is lower than that in the first chamber 3a, the pressure difference between the two chambers 3b causes The direction valve 33 opens. By opening the one-way valve 33, the oil in the first chamber 3a flows out into the second chamber 3b.

  Here, in the present embodiment, the oil discharge port 327 is formed so that the bottom surface of the first chamber 3a and the bottom surface of the second chamber 3b are substantially continuous. Therefore, the oil smoothly moves from the bottom of the first chamber 3a to the bottom of the second chamber 3b through the oil discharge port 327 by the action of gravity. Thereby, the residual of old oil in the 1st chamber 3a at the time of oil discharge can be suppressed as much as possible.

<Effects of Configuration of Embodiment>
In the configuration of the present embodiment, the oil pan 31 is partitioned into the first chamber 3a and the second chamber 3b by the oil pan separator 32. Further, the one-way valve 33 substantially prohibits the oil flow from the second chamber 3b to the first chamber 3a at the oil discharge port 327. Accordingly, the progress of warm-up is favorably promoted.

  In the configuration of the present embodiment, during the oil discharge operation for oil replacement, the one-way valve 33 allows the oil flow from the first chamber 3a to the second chamber 3b at the oil discharge port 327. Is done. Further, the bottom surface of the first chamber 3a and the bottom surface of the second chamber 3b are substantially continuous via the oil discharge port 327. As a result, the oil in the first chamber 3 a flows out to the second chamber 3 b through the oil discharge port 327 and is finally discharged to the outside of the oil pan 31 through the drain hole 311.

  In the configuration of the present embodiment, when new oil is injected in oil replacement, new oil is injected into the first chamber 3a, so that the one-way valve 33 causes the first oil discharge port 327 to Oil flow from the chamber 3a to the second chamber 3b is allowed. As a result, new oil is injected well so that the oil levels in the first chamber 3a and the second chamber 3b coincide.

  The one-way valve 33 of this embodiment has a relatively simple structure including a swing plate 331 that is swingably supported. Therefore, the device configuration of the oil storage device 3 is relatively simple. The one-way valve 33 is mounted on the oil pan separator 32, and no special configuration corresponding to the one-way valve 33 is provided on the oil pan 31 side. Therefore, in the present embodiment, the oil pan 31 can be applied well as the oil pan 31.

  As described above, according to the configuration of the present embodiment, a two-tank oil pan structure is provided at a low cost, which facilitates warm-up and facilitates oil change work (oil injection / discharge work). can do.

<List of examples of modification>
Note that, as described above, the above-described embodiment is merely an example of the embodiment of the present invention considered to be the best at the time of filing of the present application by the applicant, and the present invention is not limited to the above. It is not limited to the embodiment. Therefore, as a matter of course, various modifications can be made to the configurations shown in the above-described embodiments without departing from the essential part of the present invention.

  Hereinafter, some modifications will be exemplified. In the following description of each modification, the same name and the same code | symbol shall be attached | subjected about the component which has the structure and function similar to each component in the above-mentioned embodiment also in the said modification. . And about description of the said component, description in the above-mentioned embodiment shall be suitably used in the range which is not inconsistent.

  However, it goes without saying that the modified examples are not limited to the following. The limited interpretation of the present invention based on the description of the above-described embodiment and the following modifications unfairly harms the interests of the applicant (rushes the application under the principle of prior application), but unfairly imitates the imitator. It is not allowed (as opposed to the purpose of patent law for the protection and use of the invention).

  Further, it goes without saying that the configuration of the above-described embodiment and the configuration described in each of the following modifications can be applied in an appropriate combination within a technically consistent range.

  (1) The present invention can be applied to various devices including an oil pan, such as an automatic transmission, in addition to the engine disclosed in the above-described embodiment.

  (2) Similar to the oil pan 31, a bottom plate may be provided at the lower end of the oil pan separator 32. In this case, the oil pan separator 32 is disposed such that its bottom plate is in close contact with the bottom surface 310 a of the oil pan 31. At this time, the bottom plate of the oil pan separator 32 and the bottom plate 313 of the oil pan 31 can be fixed by a fixing member such as a screw or a rivet, or by bonding.

  (3) FIG. 3 is a side sectional view showing a configuration of one modification of the oil storage device 3 shown in FIG. As shown in FIG. 3, the swing plate 331 may be configured so that the outer shape thereof is substantially the same as the notch 326. That is, the rocking plate 331 may be accommodated in the oil discharge port 327 through a gap that is difficult for high-viscosity oil to pass through at a low temperature before warm-up.

  In this case, it is preferable that a stopper 332 is provided at the free end of the swing plate 331. The stopper 332 is disposed so as to come into contact with the side plate 321 from the outside (second chamber 3b side). That is, the stopper 332 is configured to permit entry of the free end portion into the second chamber 3b side while prohibiting entry into the first chamber 3a side.

  (4) Further, as shown in FIG. 3, the swing center portion of the swing plate 331 may be provided at the lower end.

  In this case, the material of the rocking plate 331 can be a specific gravity lower than that of oil. Alternatively, as shown in FIG. 3, a float member that can float by buoyancy in oil can be used as the stopper 332. Thereby, the one-way valve 33 can be closed naturally by the buoyancy acting on the swing plate 331 after the oil injection operation.

  (5) The oil strainer 21 is preferably provided in the vicinity of the oil discharge port 327 and the one-way valve 33 as shown in FIGS. 1 and 3. As a result, the closed state of the one-way valve 33 during operation of the engine 1 can be better ensured from the start of the engine 1 using the negative pressure generated in the oil strainer 21.

  (6) The material of each part is not particularly limited. For example, the oil pan separator 32 and the swing plate 331 may be made of the same material (particularly in the case of FIG. 3). Alternatively, both materials may be different.

  (7) As the on-off valve 324, an electromagnetic valve may be used instead of a so-called thermostat valve. Further, the top plate 322 may be provided with a recess or a weir protruding upward so that a predetermined amount of oil can be stored on the upper side of the top plate 322 before the opening / closing valve 324 is opened.

  (8) Other modifications not specifically mentioned are naturally included in the scope of the present invention as long as they do not change the essential part of the present invention. In addition, in each element constituting the means for solving the problems of the present invention, elements expressed functionally and functionally include the specific structures disclosed in the above-described embodiments and modifications, It includes any structure that can realize this action / function.

1 is a side sectional view showing a schematic configuration of an engine to which an embodiment of the present invention is applied. It is a sectional side view which shows the valve opening state of the one-way valve shown by FIG. It is a sectional side view which shows the structure of one modification of the oil storage apparatus shown by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Engine block 21 ... Oil strainer 22 ... Oil pump 3 ... Oil storage device 3a ... First chamber 3b ... Second chamber 31 ... Oil pan 310 ... Recess 310a ... Bottom surface 311 ... Drain hole 312 ... Drain plug 313 ... Bottom plate 32 ... Oil pan separator 321 ... Side plate 322 ... Top plate 323 ... Communication hole 324 ... Open / close valve 325 ... Communication hole 326 ... Notch 327 ... Oil discharge port 328 ... Supporting portion 33 ... One-way valve 331 ... Swing plate 331a ... Pin 331b ... Free end 332 ... Stopper

Claims (8)

In an oil storage device configured to store oil for lubrication of a lubricated mechanism,
An oil pan configured to be able to store the oil inside a recess opening toward the lubricated mechanism, and having a drain hole which is a through hole for discharging the oil formed at the bottom,
The drain hole is disposed at the side of the first chamber where an oil suction port that opens toward the lubricated mechanism and is connected to an oil pump for supplying the oil toward the lubricated mechanism is disposed. An oil discharge port that is disposed in contact with the bottom surface of the recess so as to form a second chamber to be discharged from the bottom of the first chamber toward the bottom of the second chamber An oil pan separator formed with
In the oil discharge port, the flow of oil from the bottom of the first chamber toward the bottom of the second chamber is allowed while the flow of oil from the bottom of the second chamber toward the bottom of the first chamber is allowed. A one-way valve configured to inhibit;
An oil storage device comprising: The oil storage device according to claim 1,
The oil storage device according to claim 1, wherein the oil discharge port is provided at a position close to the drain hole. An oil storage device according to claim 1 or claim 2,
When the bottom surface of the first chamber and the bottom surface of the second chamber are continuous, the oil moves from the bottom of the first chamber to the bottom of the second chamber through the oil discharge port by the action of gravity. An oil storage device characterized by being configured to obtain. The oil storage device according to claim 3,
The oil pan separator is
It has a cylindrical side plate,
An oil storage device, wherein a lower end of the side plate is disposed so as to contact the bottom surface of the recess. The oil storage device according to claim 4,
The lower end of the side plate is provided with a notch that opens toward the bottom surface of the recess,
The oil storage device according to claim 1, wherein the oil discharge port includes a through hole formed by the cutout portion when the side plate contacts the bottom surface of the recess. An oil storage device according to any one of claims 1 to 5,
The oil storage device according to claim 1, wherein the one-way valve is attached to the oil pan separator. The oil storage device according to claim 6,
The one-way valve is
Comprising a swing plate that is a plate-like member supported swingably by the oil pan separator;
While the free end portion of the swing plate swings from the first chamber toward the second chamber, an operation of opening the oil discharge port is allowed, while the free end portion is in the second chamber The oil storage device is configured to restrict the operation of opening the oil discharge port by swinging from the first chamber toward the first chamber. An oil storage device according to any one of claims 1 to 7,
During the warming up of the lubricated mechanism, the oil in the first chamber is exclusively supplied to the lubricated mechanism, while after the warming up of the lubricated mechanism, the oil in the first chamber and the second chamber An oil storage device configured to supply oil to the lubricated mechanism.

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