JP2002181170A - Oil sucking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the suction of air from an suction port of an oil strainer even when the oil stored in an oil pan is forced to one side by the sudden acceleration and deceleration, or the sharp turning. SOLUTION: A fixing seat part 21a of a folding type valve seat 21 is fixed to a bottom face of the oil pan 11, a circular truncated folding member 21c is mounted on an inner periphery of the fixing seat part 21a, and the suction port 16a projecting from a bottom face of the oil strainer 14 is surrounded by an upper end part of the folding member 21c. When the oil is forced to one side by the sudden acceleration or deceleration or the sharp turn, the folding member 21c mounted at a lower side of the oil flow is stood to dam the oil, so that the suction port 16a can be kept in a state of being constantly immersed in the oil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil suction device for preventing the suction of air from an oil strainer even when the oil stored in an oil pan is offset to one side.

[0002]

2. Description of the Related Art An oil pan for storing oil is used for an engine mounted on a vehicle such as an automobile and an automatic transmission for automatically shifting a driving force from the engine according to a driving state and transmitting the driving force to driving wheels. And an oil strainer is provided in the oil pan.

FIG. 14 shows an oil strainer 2 disposed on an oil pan 1 provided at the bottom of the automatic transmission. The oil stored in the oil pan 1 is sucked up by an oil pump 3 via an oil strainer 2 and each element in a control valve unit 4 constituting a hydraulic circuit,
The oil is supplied to a necessary lubricating portion and the like in the transmission case and is returned to the oil pan 1.

In the oil strainer 2, a plate-shaped filter medium 5 such as a wire mesh or a non-woven fabric is disposed, and when the oil passes through the filter medium 5, metal powder mixed in the oil is removed. You.

When the amount of oil recirculated to the oil pan 1 is small, the oil level in the oil pan 1 becomes low, and the vehicle is suddenly accelerated or decelerated or turned sharply as shown by a dashed line in FIG. When the oil is biased to one side of the oil pan 1, at least a part of the suction port 2 a of the oil strainer 2 is exposed from the oil surface and the air is sucked together with the oil, so that a normal oil pressure cannot be generated. There is.

[0006] For example, in Japanese Patent Application Laid-Open No. 6-323120, a box-shaped valve is provided at an intake port of an oil strainer so as to open in accordance with the movement of the vehicle in the front-rear direction. There is disclosed a technique for preventing air from being sucked in by opening.

In Japanese Patent Application Laid-Open No. Hei 8-4886, a deep oil reservoir is formed in an oil pan so as to face an intake port of an oil strainer, and the oil is stored in the oil pan due to rapid acceleration / deceleration or rapid turning of the vehicle. There is disclosed a technique in which even if one side of the oil is offset, the oil is always stored in a deep oil reservoir.

[0008]

However, Japanese Patent Application Laid-Open No.
According to the technology disclosed in Japanese Patent No. 323120, it is possible to cope with a case where the oil is offset in the longitudinal direction of the vehicle due to sudden acceleration / deceleration of the vehicle. In that case, we cannot respond.

In addition, since the oil is sucked by opening the box-type valve, the opening area of the suction port becomes unstable when the vehicle is stopped or at a constant speed while the oil level of the oil is stable. There is a problem that the inhalation amount of the oil fluctuates easily.

Furthermore, since the slide mechanism is provided at the suction port, the structure is complicated and the assembly is complicated.

[0011] On the other hand, according to the technique disclosed in Japanese Patent Application Laid-Open No. H8-4886, a deep oil reservoir is formed in an oil pan so as to face an intake port of an oil strainer. There is disclosed a technique in which even when oil stored in an oil pan is biased to one side, oil is always stored in a deep oil reservoir.

[0012] According to this prior art, even when the oil is shifted to one of the front, rear, right and left sides of the oil pan, since the oil stays in the deep oil reservoir, air is sucked from the suction port of the oil strainer. Although this can be prevented, a projection projecting downward must be formed on the oil pan in order to secure a deep oil reservoir, which poses a layout problem.

[0013] Further, since the suction port is disposed at a position deviated to one side with respect to the filter medium, the distance between the suction port and the filter medium becomes long, which causes resistance when oil is sucked.

Further, in the above prior arts, all of them relate to improvement of the oil strainer itself or improvement of the shape of the oil pan itself.
It cannot be used in existing engines or automatic transmissions, and has a problem of lack of versatility.

Therefore, an object of the present invention is to provide a simple structure,
It is easy to assemble and assemble, even if the oil is biased in any direction of the front, rear, left or right of the vehicle, air will not be sucked in from the intake port, and it can be adopted as it is in existing units and has excellent versatility, Another object of the present invention is to provide an oil suction device having a low suction resistance.

[0016]

In order to achieve the above object, a first aspect of the present invention is to arrange a plurality of collapsible members adjacent to each other through a slit in a truncated cone shape, and to form a base portion of each collapsible member. And a retractable valve seat that is connected to a fixing seat portion. The retractable valve seat is interposed between an oil pan and an oil strainer disposed on the oil pan, and is arranged in a truncated cone shape. An oil suction device is provided, wherein each of the above-mentioned retractable members surrounds the suction port of the oil strainer.

According to the above invention, the retractable valve seat is interposed between the oil pan and the oil strainer, and the intake port provided on the oil strainer is connected to the retractable member provided on the retractable valve seat. When the oil is deviated to one side due to sudden acceleration / deceleration or sudden turning of the vehicle, the collapsible member arranged downstream of the oil flow blocks the oil and sucks air from the intake port. Can be prevented.

According to a second aspect of the present invention, there is provided the oil suction device according to the first aspect, wherein a restricting member for restricting an opening angle of the retractable member is provided on the retractable valve seat. Is what you do.

According to the above invention, the provision of the regulating member regulates the opening angle when the collapsible member is opened, for example, to a substantially vertical state. The state where the suction port is immersed in the oil can be maintained.

In the present invention, the retractable valve seat is preferably fixed to the bottom surface of the oil pan or the bottom surface of the lower case of the oil strainer, so that it can be directly attached to an existing oil pan or oil strainer. Thus, it is possible to provide an oil inhaler which is simple and excellent in versatility.

Further, in the present invention, the base of the tiltable member may have a thin portion allowing tilting,
Accordingly, the tilting member can be smoothly tilted, so that the tilting member can follow the sudden acceleration / deceleration and sudden turning.

Further, in the present invention, the fixing sheet portion may be provided as a flange portion on the outer periphery of the flexible member, or may be connected to the inner periphery of the flexible member by being folded back. Good. Thereby, the shape of the fixing sheet portion can be selected according to the installation position and the space.

In the present invention, the restricting member may be a stopper wall disposed behind the tiltable member to prevent the flexible member from falling excessively backward, or the valve may be a valve. It may be a thin film sheet that is connected between the sheet and the fixing sheet and restricts the flexible member from falling excessively backward.

According to the regulating member as described above, the folding member and the regulating member can be integrally formed, so that the opening angle of the folding member can be regulated with a simple structure, and the oil can be adjusted at the optimum position. Can be blocked.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part of the oil suction device.

Reference numeral 11 in the figure denotes an oil pan, which is fixed to the bottom of an automatic transmission case (not shown). The automatic transmission case includes an automatic transmission mechanism including a planetary gear unit and the like.

A control valve unit 12 which constitutes a hydraulic circuit and which is fixed to the automatic transmission case near the opening end of the oil pan 11 is provided horizontally. The control valve unit 12 includes hydraulic servos for engaging and disengaging a friction engagement element of an automatic transmission mechanism incorporated in an automatic transmission case, solenoid valves for switching hydraulic pressures supplied to the hydraulic servos, and various types of solenoid valves. Each element such as a valve for adjusting the hydraulic pressure and a solenoid valve for switching the valve is provided. Reference numeral 13 denotes an oil pump.

An oil strainer 14 is provided below the control valve unit 12. A plate-like filter material (not shown) made of a wire mesh, a nonwoven fabric, or the like is provided in an internal space formed by an upper case 15 of the oil strainer 14 and a lower case 16 joined to the upper case 15. Have been.

Further, a discharge port 17 communicating with the oil pump 13 is formed on the upper surface of the upper case 15, while a suction port 16 a is formed on the bottom surface of the lower case 16, and the suction port 16 a is directed toward the bottom of the oil pan 11. Have been.

On the bottom of the oil pan 11, a retractable valve seat 21 is provided. As shown in FIGS. 2 and 3, the retractable valve seat 21 is integrally formed using a flexible material such as rubber, and a flange-shaped fixing seat portion 21 a formed on a peripheral edge is provided. It is fixed to the bottom surface of the oil pan 11 by bonding or other appropriate means.

At the inner periphery of the fixing seat portion 21a of the retractable valve seat 21, its root is fixed to the fixing seat portion 2a.
A plurality of collapsible members 21c connected to 1a and adjacent to each other via a slit 21b are arranged in a truncated conical shape inclined upward. Also, as shown in FIG. 1, an oil strainer 14 is provided at the center surrounded by each of the folding members 21c.
The lower end of the suction port 16a is exposed.

The retractable member 21c is supported so as to be tiltable around a base connected to the fixing sheet 21a.
A stopper wall-shaped regulating member 21d that regulates the opening angle of the collapsible member 21c is provided upright on the fixing sheet portion 21a so as to face the rear surface of the collapsible member 21c.

Next, the operation of the present embodiment having the above configuration will be described. When the oil pump 13 operates, the oil pan 11 is
When the oil stored in the oil strainer is sucked and passes through the oil strainer 14, the filter medium disposed in the oil strainer 14 removes metal powder and the like mixed in the oil, and discharges the oil. 17 to oil pump 13
Supplied to

The oil discharged from the oil pump 13 is supplied to each element in the control valve unit 12 and also to each member in the automatic transmission case, and is returned to the oil pan 11.

When the vehicle is stopped on a flat road or is running in a steady state, the oil stored in the oil pan 11 is kept stationary in a substantially horizontal state. At this time, the suction port 16
a is immersed in oil, and the suction port 1
6a is a collapsible member 21 of the collapsible valve seat 21
c.

When the oil stored in the oil pan 11 is deviated to one side due to rapid acceleration / deceleration or rapid turning of the vehicle, as shown in FIG. The falling member 21c is tilted toward the bottom surface of the oil pan 11, while the foldable member 21c disposed downstream of the oil flow is erected by receiving the oil flow, and the rear surface thereof is supported by the regulating member 21d. The opening angle is regulated, and it is maintained almost upright.

As a result, the oil is blocked by the collapsible member 21c disposed on the downstream side of the oil flow, the oil is held in the collapsible valve seat 21 and the suction port 16
a is maintained immersed in the oil.

In this case, the collapsible member 21c is connected to the suction port 16a.
Is arranged so that the suction port 16a is always immersed in the oil regardless of the direction in which the oil stored in the oil pan 11 is deviated in any direction of 360 °. Therefore, air is not sucked from the suction port 16a.

As described above, according to the present embodiment, the foldable valve seat 21 is disposed at the bottom of the oil pan 11,
The retractable member 21c of the retractable valve seat 21 surrounds the inlet 16a of the oil strainer 14, so that the oil pan 1 can be rapidly accelerated or decelerated or suddenly turned.
Regardless of the direction in which the oil stored in 1 flows in one direction, the collapsible member 21c is tilted following the flow of the oil, so that it is disposed downstream of the oil flow. The collapsible member 21c can block the oil flow and retain the oil. As a result, the suction port 16a is always kept immersed in the oil, and the suction of air from the suction port 16a can be effectively prevented.

Further, since the retractable valve seat 21 only needs to be fixed to the bottom surface of the oil pan 11, the oil strainer 14 and the oil van 11 can be used as they are without any change. In addition, it can be manufactured at a low cost without sacrificing the suction resistance, having excellent versatility.

Next, another embodiment of the present invention will be described. Hereinafter, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

FIG. 4 is a longitudinal sectional view of a main part of an oil suction device according to a second embodiment of the present invention. In the present embodiment,
The retractable valve seat 21 made of a flexible material such as rubber described in the first embodiment is attached to the oil strainer 1.
4 is fixed to the bottom surface of the lower case 16 provided on the lower case 4, and the suction port 16a protruding from the bottom surface of the lower case 16 faces the center of the retractable valve seat 21.
The point that the retractable valve seat 21 is fixed to the bottom surface of the lower case 16 is different from the first embodiment.

As described above, the retractable valve seat 21 is
The oil pan can be fixed not only to the bottom surface of the oil pan but also to the bottom surface of the lower case 16, and can be directly attached to the existing oil strainer 14, so that the degree of freedom of installation space can be further increased.

FIG. 5 is a longitudinal sectional view of a main part of an oil suction device according to a third embodiment of the present invention. In the present embodiment, the retractable valve seat 21 is made of resin,
The first embodiment differs from the first embodiment in that a thin portion 21e that allows the tiltable member 21c to tilt is formed at the base of 1c.

Here, it is preferable that the thin portion 21e is formed on a straight line connecting the bottom sides of the collapsible member 21c. This makes it easier for the collapsible member 21c to be tilted than when the thin portion 21e is provided on the circumference of the base of the collapsible member 21c.

As described above, the foldable member 21c may have a thin portion at the base of the foldable portion, which allows the foldable member 21c to tilt. Even when the vehicle decelerates or turns sharply, it becomes easy for the retractable member to follow.

Incidentally, as shown in FIG. 6, it is of course possible to apply this embodiment to the second embodiment of the present invention.

FIGS. 7 and 8 show a fourth embodiment of the present invention. In the present embodiment, the arrangement of the fixing sheet portion 21i is different from that of the first embodiment.

FIG. 7 is a plan view of the retractable valve seat, and FIG.
FIG. 8 is a sectional view taken along the line XI-XI in FIG. 7. The flexible valve seat 21 'in FIGS. 7 and 8 has a disc-shaped fixing seat portion 21i, and a flexible member 1 is provided around the periphery of the fixing seat portion 21i.
1c is folded inward and connected. Flexible member 1
On the back side of 1c, a protruding piece 21j protruding from the fixing sheet portion 21i in a tongue shape, and a stopper wall-shaped restricting member 21d erected on the protruding piece 21j are formed.

As described above, in the present invention, the fixing sheet portion is, as in the first embodiment shown in FIG.
In addition to being provided as a flange on the outer periphery of the flexible member 21c, it may be provided by being folded back and connected to the inner periphery of the flexible member 21c. Also, as shown in FIG. 7 and FIG. 8, they may be provided on both the outer circumference and the inner circumference, and are not particularly limited.

Thus, the shape of the fixing seat portion can be freely selected according to the installation position and space of the retractable valve seat 21.

Incidentally, it is of course possible to apply this embodiment to the second and third embodiments of the present invention.

FIGS. 9 to 11 show a fifth embodiment of the present invention. 9 is a plan view of the retractable valve seat, FIG. 10 is a sectional view taken along line VIII-VIII of FIG. 9, and FIG.
FIG.

In this embodiment, the retractable valve seat 31 is used.
Is different from the first embodiment in that it is adopted instead of the retractable valve seat 21 shown in the first embodiment.

The foldable valve seat 31 is integrally formed with an extending portion 21f in the inner circumferential direction from the fixing seat portion 21a, and a thin film sheet is formed between the facing surfaces of the extending portion 21f and each of the foldable members 21c. The opening angle of the collapsible member 21c is regulated by the regulating member 21g.

When the oil stored in the oil pan 11 flows due to rapid acceleration / deceleration or rapid turning of the vehicle, the collapsible member 21c is tilted along the oil flow and is disposed downstream of the oil flow. The retractable member 21c is the oil pan 1
When the tilting member 21g is tilted in the direction toward the bottom surface of the first member 1, the regulating member 21g supporting the folding member 11c is
h, allowing the tiltable member 21c to tilt.

Further, the collapsible member 21c on the upstream side of the oil flow is opened in the direction in which it stands vertically by the oil flow, supported by the regulating member 21g, and the opening angle is regulated.

Incidentally, it is of course possible to apply the present embodiment to the second to fourth embodiments of the present invention.

In the present invention, it is of course possible to use a plurality of the above embodiments in combination. FIG.
2, FIG. 13 shows a sixth embodiment of the present invention. In the present embodiment, the second, fourth, and fifth embodiments are combined. FIG. 12 is a plan view of the retractable valve seat, and FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG.

The flexible valve seat 3 shown in FIGS.
1 'has an annular fixing sheet portion 21k, and a flexible member 11c is folded inwardly and connected to the periphery of the fixing sheet portion 21k. This fixing seat 21k
The opposing surfaces of the folding members 21c are connected to each other via a thin-film sheet-like regulating member 21g, and the regulating member 21g regulates the opening angle of the folding member 21c. In addition, a notch hole is provided at the center, and can be fixed to the lower case 16.

As described above, in the present invention, it is possible to carry out the above embodiments in combination, and there is no particular limitation.

[0062]

As described above, according to the present invention,
The retractable valve seat is interposed between the oil pan and the oil strainer, and the retractable member provided on the retractable valve seat surrounds the intake port of the oil strainer. Even if the oil that has been deviated to one side due to sudden acceleration / deceleration or sudden turning of the vehicle, the collapsible member disposed downstream of the oil flow blocks the oil, so it can be moved in any of the front, rear, left and right directions of the vehicle. Even if the oil is biased, the suction of air from the suction port can be effectively prevented.

Further, the simple structure in which the foldable valve seat is interposed between the oil pan and the oil strainer makes it easy to manufacture and assemble, and can be used as it is in an existing unit. Excellent in nature.

Further, since the suction port can be disposed immediately downstream of the filter medium, the suction resistance is reduced, and the suction efficiency is relatively improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a main part of an oil suction device according to a first embodiment of the present invention.

FIG. 2 is a plan view of a retractable valve seat of the same device.

FIG. 3 is a sectional view taken along the line III-III of the retractable valve seat of the apparatus.

FIG. 4 is a longitudinal sectional view of a main part showing a second embodiment of the apparatus.

FIG. 5 is a vertical sectional view showing a main part of a third embodiment of the apparatus.

FIG. 6 is a vertical sectional view of a main part showing another embodiment of the third embodiment of the device.

FIG. 7 is a plan view of a retractable valve seat according to a fourth embodiment of the device.

FIG. 8 is a sectional view taken along line XI-XI of a retractable valve seat according to a fourth embodiment of the same device.

FIG. 9 is a plan view of a retractable valve seat according to a fifth embodiment of the device.

FIG. 10 is a sectional view taken along line VIII-VIII of the retractable valve seat according to a fifth embodiment of the same device.

FIG. 11 is a right side view of FIG. 10 of a retractable valve seat according to a fifth embodiment of the device.

FIG. 12 is a plan view of a retractable valve seat according to a sixth embodiment of the device.

FIG. 13 is a sectional view taken along the line XIII-XIII of a retractable valve seat according to a sixth embodiment of the same device.

FIG. 14 is a longitudinal sectional view of a main part of a conventional oil suction device.

[Explanation of symbols]

 Reference Signs List 11 oil pan 14 oil strainer 16 lower case 16a suction port 21 retractable valve seat 21a, 21i, 21k fixing seat part 21b slit 21c collapsible member 21d, 21g regulating member

Claims (2)

[Claims] 1. A folding valve seat comprising a plurality of folding members adjacent to each other via a slit arranged in a truncated cone shape, and a root portion of each of the folding members is connected to a fixing seat portion.
The retractable valve seat is interposed between an oil pan and an oil strainer disposed on the oil pan, and the retractable members arranged in a truncated cone shape surround the suction port of the oil strainer. An oil suction device, which is disposed. 2. The oil suction device according to claim 1, wherein a regulating member for regulating an opening angle of the folding member is provided on the folding valve seat.