JP2729954B2 - Oil deterioration detection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an oil deterioration detection device, and more particularly to an oil deterioration detection device suitable for judging the timing of replacing engine oil at a gas station or a car repair shop. Related to the device.

[Conventional technology]

Conventionally, light output from a light emitting element is transmitted through a lubricating oil using a light emitting element and a light receiving element, and the transmitted light is received by the light receiving element and photoelectrically converted. Many oil deterioration detection devices have been proposed which detect the deterioration of the lubricating oil by utilizing the decrease in the amount of transmitted light. For example, there are a cell type as disclosed in JP-A-61-76938 and a suction pipe type as invented in Japanese Utility Model Laid-Open No. 131615/1985.

[Problems to be solved by the invention]

However, in the above conventional example, in many cases,
Since the light emitting means and the light receiving means are arranged on one side and the other side via a transparent cell or a suction pipe which constitutes the oil detecting section, a relatively narrow cell is used as the cell or the like. However, there is an inconvenience that it is difficult to clean the cell or the like for the next measurement after the measurement is completed. On the other hand, if the width of the cell or the like is widened to facilitate cleaning, there is a disadvantage that light cannot be transmitted through an oil such as diesel engine oil, which is strongly blackened due to carbon contamination, and measurement cannot be performed. Also, in this case,
There is also a disadvantage that the amount of oil required for measurement increases.

[Object of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the conventional example, and in particular, it is possible to easily introduce a sample oil into an oil inspection unit and to clean the oil inspection unit after measurement is completed, and also to make it easy to use a diesel engine oil. It is an object of the present invention to provide an oil deterioration detecting device capable of easily measuring a sample oil mixed with carbon such as the above.

[Means for solving the problem]

According to the present invention, the oil detecting unit main body having a predetermined concave portion on the upper surface and a lid having a convex portion detachably fitted to the concave portion are provided. A transparent portion is formed in each of the opposing portions of the side wall of the concave portion, and a light emitting unit is disposed in the main body of the oil detecting unit in opposition to one of the transparent portions, and a light receiving unit is disposed in opposition to the other transparent portion. Has been established. Furthermore, a configuration is adopted in which the convex portion on the lid side is formed of a transparent member, and an oil accommodating region is formed between the convex portion and one or both of the transparent portions of the oil detecting unit main body. I have. This aims to achieve the above-mentioned object.

(Example of the invention)

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

The embodiment shown in FIG. 1 has a recess having a semicircular cross section on the upper surface.
An oil detecting unit main body 1 having a main portion 1a (see FIG. 2) and a lid 2 having a convex portion 2a removably fitted into the concave portion 1a are provided.
Then, transparent portions 1b and 1c are formed at opposing portions of the side wall of the concave portion 1a, respectively. In this embodiment, these transparent portions 1b and 1c are integrally formed by a transparent member.

A light emitting diode (hereinafter, referred to as “LED”) as a light emitting means is provided in the oil detecting section main body 1 so as to face one of the transparent sections 1b.
3, a photodiode (hereinafter referred to as "PD") 4 as a light receiving means is disposed opposite to the other transparent portion 1c.

The projection 2a on the lid 2 side is actually formed of a transparent member. The transparent portions 1b, 1 of both the convex portion 2a and the oil detecting portion main body 1
The oil storage areas 5a and 5b are formed between the oil storage areas 5a and 5c.

To describe this in more detail, the oil detecting unit main body 1 is actually
It has an external appearance as shown in FIG. 2, and a lid 2 is mounted on the upper surface of the oil detecting unit main body 1 so as to be able to move up and down as shown by arrows A and A 'in FIG.

As shown in FIG. 3, the convex portion 2a is formed of a transparent member having a semicircular cross section so as to fit into the concave portion 1a described above, and concave grooves 2b and 2c are formed on both side surfaces thereof. ing. At the tips of these grooves 2b and 2c, inclined surfaces are formed so that oil can be easily guided into the grooves 2b and 2c when fitted. Further, cuts 2d and 2e in the longitudinal direction are formed on the base end side of the transparent member forming the convex portion 2a, and air or excess oil can escape to the outside through these cuts 2d and 2e. ing.

In the present embodiment, when the convex portion 2a is fitted into the concave portion 1a, the space region between the transparent portions 1b, 1c of the oil detecting section main body 1 and the concave grooves 2b, 2c of the convex portion 2a on the lid 2 side is reduced. The oil storage areas 5a and 5b are configured.

According to the present embodiment configured as described above, light from the LED 3 can be transmitted through the transparent portion 1b, the oil storage region 5a, the convex portion 2a, the oil storage region 5b, and the transparent portion 1c in order, and can be received by the PD 4. Since it is possible to adjust the depth of the concave grooves 2b, 2c to reduce the volume of the oil storage areas 5a, 5b, the sample oil is introduced into the oil storage areas 5a, 5b and the oil inspection after the measurement is completed. There is an advantage that the washing operation of the part can be easily performed, and the measurement of the sample oil mixed with carbon such as diesel engine oil can be easily performed. In addition, the oil storage areas 5a, 5
By introducing a slightly larger amount of sample oil than the volume of the part b into the concave portion 1a and engaging the lid 2 with the detection section main body 1, a constant amount of oil is always produced by the action of the cuts 2d and 2e. Can be left in the oil storage areas 5a and 5b, which also has the advantage that oil deterioration can be measured using a fixed amount of sample oil. Furthermore, since the concave portion 1a of the oil detecting portion main body 1 and the convex portion 2a of the lid 2 are structured to be firmly fitted, they also have an advantage that they are relatively resistant to impact and the like.

In addition, as the transparent member constituting the convex portion 2a, a transparent member having a concave groove 2b for forming an oil storage area formed on only one side as shown in FIG. 4 may be used. Alternatively, as shown in FIG. 5, no groove is provided on the convex portion 2a side, and
The concave portions may be formed by providing the transparent portions 1b and 1c at a position slightly recessed from the others.

〔The invention's effect〕

As described above, according to the present invention, the lid-side convex portion is formed of a transparent member, and the oil accommodating region is formed between the convex portion and one or both of the transparent portions of the oil detecting unit main body. As a result, the volume of the oil storage area can be set small, so that the measurement of a sample oil containing carbon such as diesel engine oil can be easily performed, and the amount of oil required for the measurement is extremely small. Sufficient, it is possible to easily introduce the sump oil into the oil storage area and clean the oil detecting section after the measurement is completed, and furthermore, since the convex part of the lid fits into the concave part of the oil detecting part main body, the resistance is high. It is possible to provide an unprecedented excellent oil deterioration detecting device having relatively excellent vibration and impact resistance.

[Brief description of the drawings]

1 is a partially omitted longitudinal sectional view showing a main part of the first embodiment of the present invention, FIG. 2 is an external perspective view of the embodiment shown in FIG. 1, and FIG. 3 is a projection of FIG. FIG. 4 is an explanatory view showing details of a transparent member forming the first embodiment, and FIGS. 4 and 5 are explanatory views showing a modification. 1 ... oil inspection section main body, 1a ... recess, 1b, 1c ... transparent section, 2
... lid, 2a ... convex part, 3 ... LED as light emitting means, 4
…… PD as light receiving means, 5a, 5b …… Oil storage area.

Claims (1)

(57) [Claims] An oil detecting section main body having a predetermined concave portion on an upper surface;
A lid having a convex portion detachably fitted to the concave portion, wherein a transparent portion is partially formed on each of opposing portions of the concave portion side wall, and one of the transparent portions faces the transparent portion in the oil detecting portion main body. And a light receiving means is disposed opposite to the other transparent part, and the convex part on the cover side is formed of a transparent member, and either one of the convex part and the oil detecting unit main body or An oil deterioration detection device, wherein an oil storage area is formed between both transparent portions.