JPH0334482Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to the structure of an oil tank having an outlet for oil sent to hydraulic equipment mounted on a vehicle.

<Prior Art> The interior of an oil tank, which has an outlet for oil sent to hydraulic equipment mounted on a vehicle, has conventionally been a mere cavity for storing oil.

<Problem that the invention aims to solve> Conventionally, inside the oil tank that stores oil to be sent to the hydraulic equipment installed in the vehicle, such as the power unit of the power steering, oil leaks due to vibrations during driving. There was a problem in that the oil surface rippled, which caused air to be taken in and bubbles to be generated inside the oil, and these bubbles to reach the power unit from the outlet and cause malfunction.

In view of the above, this invention has an oil tank structure that can prevent air bubbles generated by the ripples of the oil surface in the oil tank due to vehicle vibrations from flowing out from the tank outlet, thereby preventing malfunctions of hydraulic equipment. The purpose is to provide

<Means for Solving the Problems> The technical means adopted by the present invention to solve the problems of the prior art is characterized by the fact that the oil 28 sent to the hydraulic equipment 12 mounted on the vehicle 1 is In an oil tank 13 that has an outflow port 22 and an inflow port 24 for letting oil 28 flow in at the bottom thereof, a partition member 25 is provided in the oil tank 13 to partition an oil surface 29 side of the oil 28 from a lower part of the tank. , the partition member 25 is provided with a communication port 26 that communicates the oil surface 29 side with the tank lower side, and the partition member 2 is provided below the partition member 25 in the oil tank 13.
A first auxiliary partition member 30 that partitions the 5 side and the tank bottom side is provided, and the first auxiliary partition member 30 has a communication port 3 that communicates the partition member 25 side and the tank bottom side.
4 is provided below the first auxiliary partition member 30 in the oil tank 13, with an outlet 22 side and an inlet 2.
A second auxiliary partition member 31 is provided to partition the four sides, and the communication port 26 of the first auxiliary partition member 30 is provided corresponding to a corner of the oil tank 13.

<Function> The oil 28 in the oil tank 13 is removed from the partition member 2.
5 into the oil surface 29 side and the outlet 22 side, even if the vehicle 1 vibrates, the outlet 22
Since the side oil 28 is almost sealed, there is almost no vibration. Therefore, vehicle 1
Since only the oil 28 on the oil surface 29 side vibrates due to the vibration of
It is possible to significantly reduce the number of bubbles that lead to .

Furthermore, the first auxiliary partition member 30 can further suppress vibrations of the oil 28 on the tank bottom side. In addition, since the second auxiliary partition member 31 is provided, the oil 2 flowing into the tank from the inlet 24
8 immediately connects the hydraulic equipment 12 from the outlet 22.
Even if the oil 28 flowing in from the inlet 24 contains air bubbles,
The bubbles can be eliminated during the detour inside the tank 13. Furthermore, the second auxiliary partition member 31 can reduce the amount of sagging of the oil 28 caused by vibration, suppress the undulation of the oil surface 29, and reduce the intake of air. Also,
The oil in the oil tank 13 is connected to the communication port 2 in the corner.
Since the oil flows up and down along the wall surface of the oil tank 13 through 6, the heat of the oil is smoothly conducted to the oil tank 13 side and the oil is efficiently radiated, although the ripples of the oil are reduced as described above. I can do it.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

In Fig. 2, 1 is a tractor as an example of a vehicle, with an engine 2 at the front and a transmission case 3 at the rear.
A radiator 5 and front wheels 6 are connected to the engine 2 via a front wheel bearing stand 4. Reference numeral 7 is an open/close type bonnut that covers the engine 2, radiator 5, etc., and the bonnet 7
An instrument panel 8 is fixed at the rear. A fuel tank 9 is housed inside the same panel 8, and a steering post 1 with a handle 10 is attached to the rear of the fuel tank 9.
1 is fixed upright. A control unit 12, which is a hydraulic device, is provided at the bottom of the post 11.
The unit 12 and the oil tank 13 communicate with each other through an outflow pipe 16 and an oil pump 14, and also through an inflow pipe 15, and the front wheels 6 are steered by power steering controlled in this manner.

In the oil tank 13 shown in FIG. 1, 13a is an upper tank member that is open at the bottom, and an upper flange 17a is provided around the periphery of the opening. In addition, there is a cap 1 with a screw hole on the top wall.
8 is welded and its screw hole is used as an oil supply port 19 and is closed by a cap 20.

Reference numeral 13b denotes a lower tank member which is open at the top, and a lower flange 17b is provided around the periphery of the opening. In addition, the outflow pipe 15 is provided on the lower wall.
An outlet 22 communicating with the outlet via an outlet connecting pipe 21
and an inflow port 24 that communicates with the inflow pipe 16 via an inflow connecting pipe 23. here,
The outflow port 22 has a larger diameter than the inflow port 24. Reference numeral 25 denotes a rectangular plate-shaped partition member, in which communication holes 26, 26 are opened at two central locations. Note that one of the communication ports 26 is located below the fuel filler port 19. This is for passing the oil dipstick 27 attached to the cap 20 as shown by the chain line in FIG.

Then, the upper tank member 13a and the lower tank member 1
3b, the partition member 25 is sandwiched between the upper flange 17a and the lower flange 17b, and the entire circumference seam is welded together with each flange 17a, 17b, thereby forming the box-shaped oil tank 13. There is. As a result, the oil 28 in the oil tank 13 is partitioned into the oil surface 29 side and the outlet 22 side by the partition member 25, and the oil surface 29 side and the outlet 22 side are communicated with each other by the communication port 26. be done.
Incidentally, the oil 28 is naturally supplied above the partition member 25 position.

Furthermore, in this embodiment, the lower tank member 13b is provided with a first auxiliary partition member 30 and a second auxiliary partition member 31.

The auxiliary partition member 30 has a rectangular plate shape, and four corners are cut to form a notch 32, and standing walls 33 are integrally formed on the four peripheral edges, and the standing walls 33 are spot welded to the inner surface of the lower tank member 13b. By doing so, it is fixed in parallel with the partition member 25. At this time, the spaces between the notches 32 at the four corners and the inner surface of the lower tank member 13b serve as second communication ports 34 to communicate the oil 28 above and below the auxiliary partition member 30.

The second auxiliary partition member 31 has a pair of planar L-shaped members 35, 35 welded to the lower surface of the auxiliary partition member 30 to form a planar cross shape, and has a lower end 31a and a left and right end 3.
There is a gap between 1b and 31c and the inner surface of the oil tank 13. This welding is performed by integrally bending and forming joint walls 35a extending from each upper edge of the planar L-shaped member 35 to the lower surface of the auxiliary partition member 30, and spot welding the joint walls 35a. This pair of planes L
The auxiliary partition member 30 is
Most of the oil 28 below is partitioned into front, rear, left and right sides.

With the oil tank structure as described above, even if the tractor 1 vibrates while driving, the oil tank 13
The oil 28 inside is separated from the oil level 29 by the partition member 25.
It is partitioned into a side and an outlet 22 side, and the outlet 2
Since the oil 28 on the second side is almost sealed, it hardly vibrates. Therefore, tractor 1
Since only the oil 28 on the oil surface 29 side vibrates due to the vibrations, the ripples caused by the vibrations become smaller, less air is taken in, and fewer air bubbles are generated. Moreover, the auxiliary partition member 30 further suppresses the vibration of the oil 28 on the side of the outlet 22, and the air bubbles that reach the power steering control unit 12 through the outlet 22 can be extremely reduced, thereby preventing malfunctions. can.

Also, the oil 28 below the first auxiliary partition member 30
Most of the oil 28 is partitioned into the front, rear, right and left directions by the second auxiliary partition member 31, so that the movement of the oil 28 caused by the front, rear, right and left vibrations of the tractor 1 is reduced, and ripples on the oil surface 29 are suppressed. This is preferable because it can reduce air entrainment.
In addition, by providing the inlet 24 on the outlet 22 side, the flow of the oil 28 from the inlet 24 to the outlet 22 does not include air bubbles on the oil surface 29 side.

<Effect> According to the present invention, since the partition member 25 is provided in the oil tank 13 to partition the oil surface 29 side of the oil 28 from the tank bottom side, even if the vehicle 1 vibrates, the tank bottom side Since the oil 28 is almost sealed, it hardly vibrates. Therefore, it is the oil level 29 that vibrates due to the vibration of the vehicle 1.
Since only the side oil 28 is used, the ripples caused by the vibrations are reduced and the number of bubbles generated is also reduced.

Moreover, the partition member 2 inside the oil tank 13
Since a first auxiliary partition member 30 is provided below the partition member 25 and the tank bottom side, this first auxiliary partition member 30 further suppresses vibrations of the oil 28 on the tank bottom side. Therefore, air bubbles reaching the hydraulic equipment 12 through the outlet 22 can be significantly reduced. Further, a second auxiliary partition member 30 is provided below the first auxiliary partition member 30 in the oil tank 13 to partition the outflow port 22 side and the inflow port 24 side.
Since the auxiliary partition member 31 is provided, the oil 28 that has flowed into the tank from the inlet 24 is not directly sent to the hydraulic equipment 12 from the outlet 22, and therefore, the oil 28 that has flowed into the tank from the inlet 24 is not directly sent to the hydraulic equipment 12 from the outlet 22. Even if the oil 28 contains air bubbles, the air bubbles can be removed while detouring inside the tank 13, and from this point as well, the air bubbles reaching the hydraulic equipment 12 can be effectively reduced. Furthermore, the second auxiliary partition member 31 can reduce the amount of sagging of the oil 28 caused by vibration, suppress the undulation of the oil surface 29, and reduce the intake of air. Therefore, air bubbles reaching the hydraulic equipment 12 can be extremely reduced, and malfunctions of the hydraulic equipment 12 can be reliably prevented.

Furthermore, since the communication port 26 of the first auxiliary partition member 30 is provided corresponding to the corner of the oil tank 13, the oil flowing inside the oil tank 13 from the tank bottom side to the partition member 25 side and the partition member 25
The oil flowing from the side to the tank bottom side flows along the wall surface of the oil tank 13 through the communication port 26 in the corner, so even though the vibration of the oil is reduced as described above, the heat of the oil is smoothly transferred to the oil tank. Heat can be efficiently radiated from the oil by conducting it to the 13 side, and the heat of the oil can be transferred to the hydraulic equipment 1.
The malfunction described in No. 2 can also be prevented, and its practical effects are significant.

[Brief explanation of the drawing]

Figure 1A is a partially cutaway plan view of an oil tank according to an embodiment of the present invention, and Figure 1B is A-A in Figure 1A.
1C is a sectional view taken along the line B--B in FIG. 1B, and FIG. 2 is a cutaway side view of the front portion of the tractor equipped with an oil tank. 1... Tractor, 12... Control unit, 13
... Oil tank, 22 ... Outlet, 25 ... Partition member, 26 ... Communication hole, 28 ... Oil, 29
……Oil surface.

Claims (1)

[Claims for Utility Model Registration] An oil tank 13 having an outlet 22 for oil 28 to be sent to the hydraulic equipment 12 mounted on the vehicle 1 and an inlet 24 for the oil 28 to flow in at the bottom thereof. A partition member 25 that partitions the oil surface 29 side of the oil 28 and the tank lower side is provided in the oil tank 13, and a communication port 26 that communicates the oil surface 29 side and the tank lower side is provided in the partition member 25. Below the partition member 25 in 13, the partition member 2
A first auxiliary partition member 30 that partitions the 5 side and the tank bottom side is provided, and the first auxiliary partition member 30 has a communication port 3 that communicates the partition member 25 side and the tank bottom side.
4 is provided below the first auxiliary partition member 30 in the oil tank 13, with an outlet 22 side and an inlet 2.
An oil tank structure characterized in that a second auxiliary partition member 31 is provided to partition the four sides, and a communication port 26 of the first auxiliary partition member 30 is provided corresponding to a corner of the oil tank 13.