JPH074513Y2 - Oil level gauge with oil deterioration indicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an oil level gauge provided with a device for displaying the degree of deterioration of oil.

[Conventional technology]

2. Description of the Related Art Conventionally, the degree of deterioration of oil has been determined by the color and feel of the oil attached to the tip of the oil level gauge. In addition, as a device for electrically detecting the degree of oil deterioration, a means for transmitting light rays to the engine oil,
A means for detecting the intensity of the light beam that has passed through the engine oil as an electric signal, and a means for comparing the output value of the detecting means with a reference value, and when the output value is smaller than the reference value, oil exchange is performed. An oil change warning device has been devised with a display device for displaying a warning for. (Refer to Japanese Utility Model Laid-Open No. 61-10912) [Problems to be solved by the invention] However, in the conventional method of estimating the deterioration degree of oil from the color and feel of the oil, it is necessary to know the accurate deterioration degree of oil. I couldn't. Further, in the oil change warning device, since the degree of oil deterioration is electrically detected, the device becomes complicated and there is a problem of cost increase. Further, there is a problem that the device breaks down due to disconnection or the like.

[Means for Solving the Problems]

In view of the above, the present invention is an oil level gauge with an oil deterioration degree display device capable of displaying the deterioration degree of oil with a simple structure in a color that is easy to understand, and includes a rod-shaped level gauge body and the level gauge. The gauge part, which is formed at one end of the main body, is immersed under the oil liquid level when the main body of the level gauge is inserted into the crankcase of the engine, and the gauge part is provided with a marking indicating the appropriateness of the oil liquid level and the level above. In the oil level gauge consisting of a handle formed on the other end of the gauge body,
A water-absorbent resin that absorbs and holds the acidic side indicator solution having a pH of less than 7 inside itself, and an oil deterioration degree display device including a holding member that holds the water-absorbent resin is arranged in the gauge section. Characterize.

[Action]

In the oil level gauge with the oil deterioration degree display device of the present invention, the degree of deterioration of the oil that comes into contact with the water absorbent resin is displayed by the color of the indicator solution held in the water absorbent resin.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, an oil level gauge 1 inserted into an oil level gauge guide of an engine (not shown) includes a level gauge main body 2 made of an elastic rod-shaped member and a gauge portion 10 formed at one end of the same level gauge main body. And a handle 4 formed at the other end of the level gauge body.

As shown in FIGS. 2 and 3, the gauge portion 10 has an indicator solution 20 that changes color depending on the degree of deterioration of oil and an indicator solution 20.
It is composed of a water absorbent resin 11 that absorbs and holds 20 inside itself, and an accommodating member 12 as a retaining member that accommodates the water absorbent resin 11.

Here, the accommodating member 12 is formed of transparent plastic, has a shape in which a circular truncated cone is attached to the top and bottom of a cylinder, and has a cavity 15 inside. That is, the water absorbent resin 11 is housed in the cavity 15.
Further, on the outer periphery of the housing member 12, a gauge 16 showing an allowable minimum oil level is engraved and a plurality of slits 17 and 18 are formed. And the cavity
15 communicates with the outside of the housing member 12 via slits 17 and 18. Further, the accommodating member 12 is divided into two members 12a and 12b on the surface including the central axis of the cylinder, and the grooves 14 are formed at the longitudinal ends of the two members 12a and 12b, respectively.
Is provided. An engaging portion 21 formed at one end of the level gauge body 2 is arranged in the groove 14. That is, when assembling the gauge portion 10, the water-absorbent resin 11 is hollow.
The gauge portion 10 is fixed to one end of the level gauge main body 2 by accommodating it in 15 and adhering the members 12a and 12b to each other at the joint surface 13 so as to sandwich the engaging portion 21.

On the other hand, the water-absorbent resin 11 has a strong ability to absorb and retain water (however, once saturated, it cannot absorb any more water), and once absorbed water is hardly released outside the resin. It has a property. Further, as an example of the water absorbent resin, a sodium polymethacrylate-based crosslinked body can be cited.

The indicator solution 20 has the property of discoloring according to the ph value, and as an example, 0.20 g of methyl red is added to 90 ml of ethanol.
It was dissolved in and the whole amount was diluted to 100 ml with water.

In the oil level gauge with the oil deterioration degree display device having the above-mentioned configuration, the gauge 16 engraved on the outer periphery of the housing member 12 indicates the minimum level of the oil surface. 10 will always be below the surface. That is, when the oil level gauge 1 is inserted in the oil level gauge guide of the engine (not shown), the water absorbent resin 11 in the housing member 12 is always in contact with the oil via the slits 17 and 18.

Therefore, when checking the degree of deterioration of the engine oil, pull out the oil level gauge 1 inserted in the oil level gauge guide of the engine, wipe off the oil adhering to the accommodating member 12, and check the color indicated by the indicator solution. Good. (The color of the indicator solution can be seen because the containing member 12 is transparent.) Here, the indicator solution (methyl red 0.20 g + ethanol 90 m)
Table 1 shows the relationship between the color (l + water → 100 ml) and the pH value and the degree of oil deterioration.

That is, when the oil in contact with the water-absorbent resin 11 deteriorates (oxidizes), the ph value of the indicator solution decreases, and the color of the indicator solution also changes from yellow to red, and the degree of oil deterioration (replacement time) depends on the color. You can know. FIGS. 4 and 5 show a second embodiment of the present invention, in which a small hole 19 is provided on the outer periphery of the accommodating member 12 so that the water absorbent resin 11 and the oil come into contact with each other. ing.

In the oil level gauge with the oil deterioration degree display device configured as described above, the indicator solution that changes color according to the deterioration degree of oil
Since the water-absorbent resin 11 holding 20 is disposed in the gauge portion 10, the degree of deterioration of oil can be easily displayed in color with a simple structure.

[Effect of device]

In the oil level gauge with the oil deterioration degree display device of the present invention, since the oil deterioration degree display device is arranged in the gauge portion of the oil level gauge, the deterioration degree of the oil can be easily displayed in color. Further, since the structure is simple, there is an effect that the cost is reduced as compared with a device that electrically detects the degree of oil deterioration. Furthermore, since there is no electric circuit or the like, there is no problem of failure.

[Brief description of drawings]

FIG. 1 is a perspective view of an oil level gauge with an oil deterioration degree display device according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the main part of the device, and FIG. 3 is an exploded perspective view of the main part of the device. , 4th
FIG. 5 is a perspective view of an oil level gauge with an oil deterioration degree display device according to the second embodiment, and FIG. 5 is a cross-sectional view of essential parts of the device. 1 …… Oil level gauge, 2 …… Level gauge main body 3 …… Stopper, 4 …… Grip 10 …… Gauge section, 11 …… Water absorbing resin 12, 12a, 12b …… Accommodating member 13 …… Joining surface, 14 …… Groove 15 …… Cavity, 16 …… Gauge 17 …… Slit, 18 …… Slit 19 …… Small hole, 20 …… Indicator solution 21 …… Engagement part

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped level gauge main body, which is formed at one end of the level gauge main body and is immersed below the oil level when the level gauge main body is inserted into the crankcase of an engine, and the level of the oil level is adjusted. In an oil level gauge consisting of a gauge section provided with a marking showing the degree of suitability and a handle formed on the other end of the level gauge body, the acidic side indicator solution whose discoloration range is less than pH 7 is absorbed inside itself. An oil level gauge with an oil deterioration degree display device, wherein an oil deterioration degree display device including a water absorption resin that holds the water absorption resin and a holding member that holds the water absorption resin is disposed in the gauge portion.