JPH1026547A - Oil-level gage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure the accurate amount of oil by precisely detecting the oil level in an oil tank. SOLUTION: A tubular cover member 5, whose lower part is opened, is mounted so that the member is freely attached and removed at a gage part 4 of an oil-level-gage main body 2 of an oil-level gage 1, which is inserted into a filler tube 6 having the bent intermediate part and inspects the amount of oil. At the upper part of the cover member 5, an air bleeder hole and an attaching and removing hole for inserting and fixing the oil-level-gage main body 2 are formed. By forming the air bleeding hole at the upper part of the cover member 5 in this way, the air is bleeded from the inside of the oil-level gage 5, and the accurate oil surface is detected when the oil-level-gage main body 2 is inserted into the oil. When the oil-level-gage main body 2 is fixed to the attaching and removing hole of the cover member 5 and the oil-level-gage main body 2 is inserted into the filler tube 6, the cover member 5 is not deviated from the oil-level-gage main body 2, and the oil is not attached to the gage part 4 when the main body is pulled out at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil level gauge for accurately detecting an oil level of an oil filled in an oil tank (oil pan) of an automobile engine or the like.

[0002]

2. Description of the Related Art An automobile engine has many sliding and frictional parts such as a piston and a crankshaft. An oil film is formed in an oil tank provided at a lower portion of the engine to form an oil film on the friction portion to avoid direct contact between metals to prevent friction loss and wear.

Since the oil circulates in the frictional portion, a constant amount or more must always be secured in the oil tank. Therefore, the amount of oil is regularly measured by an oil level gauge at the time of refueling or the like. When measuring the amount of oil, insert an oil level gauge into the oil tank through the filler tube provided in the engine, attach the oil to the graduations on the gauge section, and visually check the attached oil for the oil level in the oil tank. To detect the amount of oil.

As an oil level gauge, there is one disclosed in Japanese Utility Model Publication No. 55-48412.
In the gazette disclosed in this publication, a long hole in the longitudinal direction of a flat gauge is provided at the center of a flat gauge made of a spring material to be inserted into a gauge insertion pipe. The oil level on the inner wall of the insertion tube is prevented from sticking to the long hole so that the oil level can be read accurately.

Further, there is an oil level gauge cap disclosed in Japanese Utility Model Publication No. 58-30187. In this publication, an oil level gauge passage opening formed in a head of a cap body is entirely covered with a plurality of elastic plates vertically stacked, and the cap body is covered with an oil level gauge of an engine. It is configured to be fixed to the upper end of the insertion tube.

Further, as an oil gauge for an engine,
There is one disclosed in Japanese Patent Publication No. 53-348. The oil gauge disclosed in this publication is provided with a longitudinally extending slot at a lower end of a hollow gauge having an opening at an upper end, and a protection pipe in which a transparent plastic pipe is integrally fitted therein is fixed. It is a thing. By inserting this hollow gauge into the oil pan, the oil in the oil pan is put into the hollow part and drawn out, so that the amount of oil and the dirt can be simultaneously detected.

[0007]

In the prior art described above, the oil tank filled with oil is apt to be transmitted with vibrations when the vehicle is running, and when the vibrations are transmitted, the oil inside moves and the oil is deposited on the inner wall of the filler tube. It becomes easy to adhere. For this reason, when pulling out the oil level gauge inserted into the filler tube, the gauge part of the oil level gauge scrapes the oil adhering to the inner wall of the filler tube, and if the oil is scraped, the gauge part becomes difficult to read due to the scraped oil. There was a problem that the oil level could not be accurately grasped.

In the oil level gauge disclosed in Japanese Utility Model Publication No. 55-48412, a long hole in the longitudinal direction is provided at the center of the flat gauge, so that the oil adhering to the gauge insertion pipe is connected to the long hole of the flat gauge. It is designed to accurately read the oil on the flat gauge by preventing it from sticking to
When the flat gauge is pulled out from the gauge insertion tube and read, the excess oil outside the gauge is wiped off with a cloth, and then the oil on the long hole side is read.

The oil level gauge cap disclosed in Japanese Utility Model Publication No. 58-30187 has a plurality of elastic plates covering substantially the entire oil level gauge passage opening formed in the head of the cap body. When pulling out the oil level gauge from the oil level gauge insertion pipe, it is necessary to twist the oil level gauge.
In addition, it is necessary to fix the elastic plate material to the cap mounted on the upper end of the oil level gauge insertion pipe, which may increase the cost.

The engine oil gauge disclosed in Japanese Patent Publication No. 53-348 has a protection tube in which a hollow groove is provided at the lower end of a hollow gauge and a transparent plastic tube is integrally fitted inside. Although it is fixed, there is a problem that the production is slightly complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. A cover member is attached to an oil level gauge main body inserted into a filler tube, and oil adhering to an inner wall of the filler tube is removed from the oil level gauge main body. It is an object of the present invention to provide an oil level gauge capable of preventing an oil level from being reached on a gauge portion and accurately reading an oil level.

[0012]

According to the first aspect of the present invention,
In an oil level gauge for checking the amount of oil by inserting it into a filler tube with an intermediate part bent, a tubular cover member having an open lower part that can be inserted into the filler tube is detachably attached to the oil level gauge main body. An air vent hole is formed in an upper portion of the cover member, and a detachable hole for inserting and fixing the oil level gauge body is formed.

According to the first aspect of the present invention, an air vent hole is formed in an upper portion of a cylindrical cover member which is mounted on the oil level gauge body and has a lower part opened, and the oil level gauge body is inserted into the oil. At this time, air is evacuated from the inside of the cover member so that the oil is surely penetrated into the inside of the cover member so that an accurate oil level can be detected.

Further, when the oil level gauge body is inserted into and removed from the mounting hole formed in the upper part of the cover member, and the oil level gauge body is inserted into the filler tube, the cover member does not come off from the oil level gauge body. To do.

According to a second aspect of the present invention, there is provided the oil level gauge body, wherein a hole for attaching and detaching the cover member is formed by a substantially round hole and a notch provided facing an inner peripheral portion of the round hole. And a notch recessed portion engaging with the inner peripheral edge of the round hole is provided.

According to the second aspect of the present invention, the oil level gauge body is provided in a mounting / dismounting hole formed by a substantially circular hole formed in the cover member and a notch provided opposite to an inner peripheral portion of the substantially circular hole. By inserting and rotating the oil level gauge body or the cover member, the oil level gauge body can be attached to and detached from the cover member.When reading the scale part of the oil level gauge body, if the cover member is shifted, The oil on the scale can be read more accurately, and the oil level in the oil tank can be detected more accurately.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, which can be understood from the description of claim 1, as shown in FIGS. 1, 2 and 4, the oil amount is checked by inserting it into a filler tube 6 whose middle part is bent. A tubular cover member 5 having an open lower portion, which can be inserted into the filler tube 6, is detachably attached to the oil level gauge body 2 of the oil level gauge 1. At the top of the cover member 5, an air vent hole 8 and an attachment / detachment hole 9 for inserting and fixing the oil level gauge body 2 are formed.

According to the present invention, as shown in FIGS. 2 and 3, the attachment / detachment hole 9 of the cover member 5 is formed into an elliptical hole 10 and the major axis of the elliptical hole 10 as shown in FIGS. It is formed by a notch 11 provided to face the inner peripheral portion on the side. Further, the oil level gauge body 2 is provided with a cutout recess 12 which engages with the inner peripheral edge of the elliptical hole 10.

[0019]

Next, an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes an oil level gauge of the present invention, and reference numeral 2 denotes an oil level gauge main body 2 made of a flexible member such as a wire. The upper end of the oil level gauge main body 2 is a ring-shaped finger hole 3, and the lower end is a flat gauge part 4.

A transparent cover member 5 made of plastic is detachably mounted on the gauge portion 4. The upper part of the cover member 5 is substantially closed as shown in FIGS.
The lower part is an open cylindrical part, and the outer peripheral part communicates with an oil tank (not shown), and has a hole 7 such that it can be inserted into a hole 7 of a filler tube 6 (see FIG. 4) that is bent in the middle. It has substantially the same shape as the inner circumference.

At the outer edge of the upper portion of the cover member 5, two arcuate air vent holes 8 are provided.
An attachment / detachment hole 9 through which the gauge portion 4 of the oil level gauge 1 is inserted and fixed is provided in the upper central portion. The attachment / detachment hole 9 includes a substantially round hole, that is, an elliptical hole 10, and a notch 11 provided opposite the inner peripheral portion on the major diameter side of the elliptical hole 10. The length A from the end to the end of the notch 11 is substantially the same as the width of the gauge part 4 of the oil level gauge body 2.

As shown in FIG. 3, a notch recess 12 is formed on the upper side of the gauge portion 4 of the oil level gauge body 2 so as to engage with the inner peripheral edge of the oval hole 10 of the cover member 5 on the short diameter side. Are formed. The cover member 5 is fixed to the oil level gauge body 2 by the engagement between the notch recess 12 and the inner peripheral edge of the oval hole 10 of the cover member 5 on the minor diameter side. In FIGS. 1 and 4, what is indicated by reference numeral 13 is a stopper that fits tightly on the upper part of the filler tube 6.

Since the present embodiment is constructed as described above, when the oil level gauge 1 is inserted into the filler tube 6 provided in the engine, the cover member 5 is attached to the gauge section 4 of the oil level gauge body 2. And then insert.
In order to attach the cover member 5 to the gauge part 4, the lower end (L side) of the gauge part 4 of the oil level gauge main body 2 is attached to the oval hole 10 and the notch
When the notch 12 of the gauge 4 faces the notch 11 of the attachment / detachment hole 6, the notch 12 of the gauge 4 and the oval hole 10 of the cover member 5 are rotated by 90 degrees. The oil level gauge body 2 and the cover member 5 are integrally fixed by engaging the peripheral wall on the radial side.

FIG. 4 shows the oil level gauge 1 in this state inserted into the filler tube 6 of the engine. Since the oil level gauge 1 is formed of a flexible material, no matter how the filler tube 6 is bent, the oil level gauge 1 bends following the bending. Can be reliably inserted into the oil tank.

When the oil level in the oil tank is detected, the oil level gauge 1 is pulled out from the filler tube 6, and the cover member 5 and the oil level gauge 1 are rotated by 90 degrees with each other, so that the notch recess 12 is notched. When the cover member 5 is opposed to the hole 11, the cover member 5 is moved toward the finger hole 3 along the axis of the oil level gauge body 2, and the oil adhering to the gauge portion 4 is visually observed to detect the correct position of the oil surface. After the detection of the oil level, the cover member 5 is returned to the gauge section 4 and the oil level gauge 1 is inserted into the filler tube 6. Although an example in which the cover member 5 is mounted on the oil level gauge body 2 for detecting the oil level of the engine has been described, the cover member 5 is not limited to this, and the cover member 5 is also mounted on the oil gauge of the oil case of the transmission. can do.

[0026]

According to the first aspect of the present invention, since the air vent hole is formed in the upper part of the cylindrical cover member mounted on the oil level gauge main body and the lower part is opened, the oil level gauge main body is inserted into the oil. At this time, the air can be evacuated from the inside of the cover member, whereby the oil can reliably enter the inside of the cover member and the accurate oil level can be detected.

Further, since the oil level gauge body is inserted into and removed from the mounting hole formed in the upper part of the cover member, the oil level gauge body is inserted into and removed from the filler tube. It can be prevented from coming off further.

Since the cover member is attached to the oil level gauge main body as described above, even if the oil level gauge main body comes into contact with the oil adhering to the inner wall of the filler tube when the oil level gauge is pulled out from the filler tube, the oil is removed. Oil does not contact the scale part of the level gauge body. As a result, the scale portion of the oil level gauge body is free from dirt, and the oil level can be measured more accurately.

Also, since the gauge portion of the oil level gauge body does not directly contact the oil on the inner wall of the filler tube, any bent filler tube can be inserted, and the layout of the filler tube can be freely set. can do.

According to a second aspect of the present invention, the oil level gauge main body is inserted into a mounting / dismounting hole formed by a substantially circular hole formed in the cover member and a notch provided opposite to an inner peripheral portion of the substantially circular hole. Then, by rotating the oil level gauge body or the cover member, the oil level gauge body and the cover member can be detached, so that when reading the scale portion of the oil level gauge body, the cover member is moved. As a result, the oil on the scale can be read more accurately, and the oil level in the oil tank can be more accurately detected.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention.

FIG. 2 is an enlarged top view showing a cover member of FIG. 1;

FIG. 3 is a sectional front view of FIG.

FIG. 4 is a sectional front view showing a state where the oil level gauge of FIG. 1 is inserted into a filler tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil level gauge 2 Oil level gauge main body 5 Cover member 6 Filler tube 8 Air vent hole 9 Removable hole 10 Oval hole 11 Notch 12 Notch recess

Claims (2)

[Claims] 1. An oil level gauge for checking the amount of oil by inserting it into a filler tube whose middle part is bent, wherein a tubular cover member having an open lower part which can be inserted into the filler tube is detachably attached to an oil level gauge body. An oil level gauge, wherein an air vent hole is formed in an upper portion of the cover member, and a detachable hole for inserting and fixing the oil level gauge body is formed. 2. The method according to claim 1, wherein the cover member has a substantially circular hole.
2. The oil level gauge body is provided with a notch recess formed to be engaged with an inner peripheral edge of the round hole, the notch portion being formed by a notch provided opposite to an inner peripheral portion of the round hole. The indicated oil level gauge.