JPH049555Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] This invention relates to an oil level gauge that allows the amount of remaining oil in an oil tank to be visually observed from the outside.

[Technical background of the invention] Generally, in this type of oil level gauge, as shown in FIGS. 5 and 6, a pair of upper and lower through holes 2 are provided at predetermined positions in the side wall 1 of the oil tank. At the same time, a transparent cover body 3 formed vertically on the outer surface side of the tank side wall 1 so as to straddle the above-mentioned through holes 2, 2 is inserted together with an O-ring 4 through an annular frame member 5 using screws 6. I'm trying to fix it. This method does not pose a problem when the mounting surface is relatively thick, such as a cast tank, and the screw 6 can be screwed in without penetrating it, but when the mounting surface is thick, such as an iron plate tank. If the screw is relatively thin, as shown in FIG.
It is necessary to install it to ensure liquid tightness. Therefore, the cost of parts is high, and it is difficult to apply it to, for example, a closed tank. Although it is conceivable to previously attach the cap nut 8 to a predetermined position on the inner surface of the tank by welding or the like, this is not preferable because it increases the number of man-hours and the accompanying cost. In addition, especially in tanks made by press drawing of thin-walled iron plates, the side walls are often warped, and if the oil level gauge is mounted on such a surface, there will not be enough crushing allowance for the O-ring 4, and the There is a risk of oil leaking from the parts.

[Purpose of the invention] This invention was devised in view of the above-mentioned drawbacks of the conventional technology.The purpose of this invention is to improve oil tanks made of thin-walled iron plates, even if the mounting wall surface is slightly warped. To provide a highly liquid-tight oil level gauge which can be easily installed only by working from outside the tank without using extra parts such as cap nuts.

[Example] Hereinafter, this invention will be explained in detail with reference to an example shown in FIGS. 1 to 4.

The front view shown in Figure 1 and its −
Referring to FIG. 2, which is a line sectional view, this oil level gauge includes a frame member 12 for attaching the transparent cover body 10 to the side wall 11 of the oil tank. This frame member 12 includes a substrate 13 having a length greater than the distance between a pair of upper and lower through holes 11a and 11b bored at a predetermined position in the tank side wall 11, and both ends of this substrate 13 are A pair of communication holes 13a, 13b are bored to communicate with each of the through holes 11a, 11b. The substrate 13 also has annular ribs 14a and 14b protruding around the communication holes 13a and 13b on the back side facing the tank side wall 11, and each region surrounded by the annular ribs 14a and 14b. Screw insertion holes 15a and 15b are provided. In this case, the annular ribs 14a, 14b are
As shown in FIG. 2, the substrate 13 is high enough to float above the tank side wall 11, and each of the annular ribs 14a, 14b has an annular shape for mounting an O-ring 16, 16. Grooves 17a, 17
b is engraved on each.

In the above configuration, the frame member 12 is
O-rings 16, 1 are placed in the annular grooves 17a, 17b.
6, and then insert the male screws 18, 18 into the screw insertion holes 15a, 15b and screw them into the tank side wall 11, thereby attaching the oil tank to the oil tank. Further, the transparent cover body 10 is firmly attached to the front side of the substrate 13 forming the frame member 12 with an O-ring 20 in between, via an annular holding member 21 having substantially the same shape as the substrate 13. In this embodiment, a flange portion 22 formed to surround the transparent cover body 10 is provided on the front side periphery of the substrate 13, and the presser member 21 is screwed onto this flange portion 22. It's starting to get stopped.

[Effect] According to the above configuration, as illustrated in FIGS. 3 and 4, the through holes 11a, 11b and the screw insertion holes 15a, 15b are connected to each annular rib 14a, 14b and the tank side wall. 11, and the heads of the male screws 18, 18 are located inside the transparent cover body 10. This oil level gauge can be attached to an oil tank in a liquid-tight manner by simple work from the outside of the oil tank. Therefore, it is also applicable to closed tanks. Also, since the substrate 13 is suspended from the tank side wall 11 by the annular shapes 14a and 14b, the through holes 11a and 11b and the screw insertion holes 15a and 15
It is a structure that only needs to be sealed around b, and there is no need to seal the entire surface of the frame member as in the past, so it can be installed without any problem even if the tank side wall has some warp or distortion.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the oil level gauge according to this invention, and FIGS. 2, 3, and 4 are sectional views taken along lines -, -, and - in FIG. Figure 5 is an exploded view showing a conventional oil level gauge, Figure 6 is a cross-sectional view showing a conventional oil level gauge installed, and Figure 7 is a cross-sectional view showing a conventional installed condition different from Figure 6. . In the figure, 10 is a transparent cover body, 11 is a tank side wall, 11a, 11b are through holes, 12 is a frame member, 13 is a substrate, 13a, 13b are through holes, 14
a, 14b are annular ribs, 15a, 15b are screw insertion holes, 16, 20 are O-rings, 18 are male screws, 2
1 is a holding member.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of upper and lower through holes are bored at predetermined positions in the side wall of an oil tank made of a thin iron plate, and the outer surface of the side wall has a size that extends over the pair of through holes. In the liquid level gauge, the formed transparent cover body is attached liquid-tightly through a frame member, and the liquid level of the oil tank can be visually observed through the transparent cover body, the frame member comprising: , having a substrate formed substantially longer than the distance between the pair of through holes, the substrate having a pair of communication holes communicating with each of the through holes, and a pair of communication holes facing the side wall of the tank. An annular rib protruding around the communication hole at a height such that the substrate is lifted from the side wall of the tank on the back side, and a screw insertion hole bored in each area surrounded by the annular rib. An O-ring is arranged in the annular rib to make liquid-tight contact with the side wall of the tank, and the substrate is connected to the annular rib by a screw member inserted into the screw insertion hole. The transparent cover body is liquid-tightly attached to the side wall of the tank at the rib portion, and the transparent cover body is liquid-tightly attached to the front side of the substrate via a holding member so as to straddle the pair of communication holes. A liquid level gauge characterized by: