JPS59112229A - Structure of attaching oil gauge - Google Patents

Abstract

PURPOSE:To prevent an oil leakage by forming each opposing surface of a supporting part of an oil gauge and a bottom wall surface of an oil tank in tapered surface and tightening and fixing with a screw means by interposing a rubber packing between them. CONSTITUTION:The supporting part 7 of the oil gauge and the oil tank 4 are sealed liquid tightly by fitting to each other with the screws 7a, 4a, interposing the rubber packing 10 between the mutually opposing tapered surfaces 4b, 7b by tightening and fixing of the screws 7a, 4a. Two electric contacting points 11 on the upper surface of the part 7 are connected to outer alarm device through each conducting wire 11a.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for an oil level gauge, and in particular to a mounting structure for an oil level gauge.
The present invention relates to a mounting structure for an oil level gauge suitable for an oil tank for a cycle engine.

In recent years, oil tanks for two-stroke engines mounted on motorcycles have been made of resin, with the aim of reducing the weight of the vehicle. Conventionally, when using a resin oil tank, the oil level gauge was attached to the oil tank by fixing it to the wall above the oil tank, where the oil would not come into contact, in order to prevent oil from leaking from the mounting part. The oil level gauge body was designed to extend from its upper wall toward the bottom of the oil tank.

However, although such an oil level gauge mounting structure has the advantage that there is no fear of oil leakage, it has the disadvantage that the type of oil level gauge must be changed every time the depth of the oil tank differs. In other words, since it is necessary to position the oil level detection part such as a float at the bottom of the oil tank, it is necessary to install oil level gauges of different lengths depending on the depth of the oil tank, which reduces productivity. This was a disadvantage to cost reduction.

An object of the present invention is to install an oil level gauge in a resin-made oil tank so that the same type of oil level gauge can be used even if the depth of the tank is different, thereby contributing to productivity improvement. The goal is to provide structure.

The oil level gauge mounting structure according to the present invention that achieves the above object is as follows:
The oil level gauge support part is fixed to the bottom wall surface of the resin oil tank via screw means, and the opposing surfaces of the oil level gauge support part and the bottom wall surface of the oil tank are respectively formed into tapered surfaces, and both tapered surfaces are formed. It is characterized in that a rubber gasket is interposed between the surfaces and is tightened and fixed by the screw means.

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows a motorcycle equipped with a two-stroke engine equipped with an oil tank having an oil level gauge mounting structure according to the present invention, where 1 is a front wheel, 2 is a rear wheel, and 3 is a seat. sheet 3
There are a resin oil tank 4 and a fuel tank 5 inside and below.
is provided.

2 and 3 show the oil tank 4, and the oil level gauge 6 attached to the oil tank 4 has a lower oil level gauge support part 7 screwed onto the bottom wall of the oil tank 4. It is fixed. A vertical guide rod 8 is fixed to the oil level gauge support 7, and a float 9 is slidably fitted into the guide rod 8. The oil level gauge support part 7 and the oil tank 4 have their screws 7a and 4a screwed together, and a rubber packing 10 is interposed between the tapered surfaces 4a and 7b facing each other to tighten the screws 7a and 4a. The fixation provides a liquid-tight seal.

Further, on the upper surface of the oil level gauge support section 7, there are two electrical contacts 11.
11 is provided, and each conducting wire 11a, lla is connected to an external alarm device (not shown). Further, a switch plate 12 is fixed to the lower surface of the float 9, and when the float 9 descends due to a drop in the oil level, the switch plate 12 is fixed to the lower surface of the float 9.
The Sochi plate 12 is brought into contact with the contacts 11 and 11 as shown by the chain line to generate an alarm.

According to the mounting structure of the oil level gauge 6 described above, the oil level gauge support part 7
is the tapered surface 7a and the tapered surface 4a on the oil tank 4 side.
A rubber gasket 10 is interposed between the rubber gasket 10 and the screw 1b.

4b is screwed to provide a liquid-tight seal, so even if the oil level gauge 6 is attached to the bottom of the oil tank 4, no oil leakage will occur.

In addition, since the oil level gauge 6 is fixed to the bottom wall of the oil tank 4, it is different from the conventional case where it is fixed to the upper side wall of the tank. There is no need to prepare various oil level gauges with different lengths of the guide rod 8 depending on the depth, and the guide rod 8 of a constant length is not necessary.
One type of oil level gauge can be adapted to all oil tanks. That is, as the guide rod 8, the switch plate 12 of the float 9 is connected to the electrical contacts 11.11 to turn ON and OFF.
The same type of oil level gauge can be used for all oil tanks regardless of the depth dimension, as long as there is a minimum length that can be used for FF. As a result, the productivity of the oil level gauge can be improved and production costs can be reduced.

4 to 6 show other embodiments of the present invention.

In this embodiment, an oil level gauge 6 is attached to a side wall surface at the bottom of the oil tank 4. The oil level gauge support part 7 of the oil level gauge 6 is fixed to the side wall of the oil tank, and a support arm 14 projects horizontally from the oil level gauge support part 7.
A swinging rod 15 is swingably supported on the shaft, and a float 9 is fixed to the tip.

The oil level gauge support part 7 is connected to its tapered surface 7b and the oil tank 4.
A rubber packing 10 is interposed between the tapered surface 4b of the
In this interposed state, the flange 7c having the tapered surface 7b is held between the cap 13. The cap 13 has its screw 13a screwed together with the screw 4a of the oil tank 4, and by tightening and fixing the screws 13a and 4a, the rubber packing 10 is pressed and sealed liquid-tightly.

Further, the oil level gauge support portion 7 is provided with electrical contacts 11.11, which are connected to an alarm device (not shown) via conductive wires 11a, 11a. In addition, a switch plate 12 is provided on the upper surface of the end of the swinging rod 15, and when the oil level decreases, the swinging rod 1
By lowering the fixed side of the float 9 of 5, the end of the switch plate 12 is raised as shown by the chain line, and the switch plate 1
2 is brought into contact with the electrical contact 11.11.

In this embodiment as well, oil leakage is prevented as in the above embodiment, and since the oil level gauge is installed at the bottom of the oil tank 4, it is possible to use the same type of oil level gauge to It can also be installed in deep oil tanks.

As described above, the oil level gauge mounting structure according to the present invention fixes the oil level gauge support to the bottom wall of the resin oil tank via screw means, and also connects the oil level gauge support to the oil tank. The surfaces facing the bottom wall surface are each formed into a tapered surface, and a rubber gasket is interposed between both tapered surfaces, which are tightened and fixed by the screw means, so that even if the oil level gauge support part is installed at the bottom of the oil tank, There is no oil leakage, and since it is attached to the bottom of the oil tank, the same type of oil surface 81 can be attached to any oil tank regardless of its depth. Therefore, productivity of the oil level gauge can be improved.

[Brief explanation of drawings]

Fig. 1 is a side view of a motorcycle having an oil tank with an oil level gauge mounting structure according to the present invention, Fig. 2 is a vertical sectional view of the main part of the oil tank, and Fig. 3 is a section of the oil level gauge mounting part of the oil tank. FIG. 4 is a vertical cross-sectional view of the main part of an oil tank to which an oil level gauge according to another embodiment is attached, and FIG. 5 is a vertical cross-sectional view showing details of the oil level gauge mounting part of the same oil tank. The top view and FIG. 6 are views taken along the arrows ■ to ■ in FIG. 5. 4. Oil tank, 6. Oil level gauge, 7. Oil level gauge support, 8. Guide rod, 9. Float, lO.
・Rubber seal, 11... Electrical contact, 12... Switch plate, 13... Cap, 15... Swinging rod, 4a, 7
a, L3a...screw, 4b, 7b...tapered surface. IS 2 Figure 7 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] The oil level gauge support part is fixed to the bottom wall surface of the resin oil tank via screw means, and the opposing surfaces of the oil level gauge support part and the bottom wall surface of the oil tank are each formed into a tapered surface, and both tapered surfaces are formed. A mounting structure for an oil level gauge, characterized in that a rubber gasket is interposed between the surfaces and the screw means is used to tighten and fix the surface.