KR20090124605A - Oil level gauge of vehicles - Google Patents

Abstract

PURPOSE: An oil level gauge of a vehicle is provided to reduce external force exercised in attaching or detaching a level gauge to or from a pipe by minimizing a fastening force occurring region of a pipe and a level gauge. CONSTITUTION: An oil level gauge of a vehicle comprises a pipe(12), and a level gauge(13). The pipe is attached to an engine of a vehicle. The level gauge is attached to the pipe and has an oil level indicating part in the bottom part. A separation preventing protrusion(12a) is formed in an inlet side inner circumference of the pipe. A separation preventing protrusion(13a) is formed in the outer surface of the level gauge to be conformed to the inlet side inner circumference of the pipe. The mutual contacting area tilt angle of the separation preventing protrusion ranges from 35° to 50°. In the upper part of the separation preventing protrusion of the level gauge, the inner diameter of the pipe is smaller than the outer diameter of the level gauge. In the lower part of the separation preventing protrusion of the level gauge, the inner diameter of the pipe is greater than the outer diameter of the level gauge.

Description

Oil level gauge of vehicles

The present invention relates to an oil level gauge that measures an amount of oil used in an engine of a vehicle such as an engine or a transmission of an automobile, a construction machine (hereinafter, referred to as a "vehicle"), and includes a pipe (or "tube") by vibrating the vehicle or the like. And a level gauge (or " gaugestick ") from the vehicle oil level gauge.

More specifically, the separation prevention protrusions are formed on the inner peripheral surface of the inlet side of the pipe constituting the oil level gauge and on the outer surface of the level gauge at the corresponding position, so that the level gauge can be easily accommodated in the pipe, After the gauge is coupled to the level gauge outer surface and the inner surface of the pipe to prevent direct contact with the oil level gauge for the vehicle to prevent the departure caused by the wear of the level gauge due to vibration of the vehicle.

In general, in order to smoothly operate a vehicle engine such as an engine or a transmission, and to maintain a long life, oil is supplied to the sliding part. At this time, the supplied oil is oxidized in contact with the air or dilution due to the mixing of impurities introduced from the engine occurs, so that the viscosity of the oil decreases, so the driver checks the state of the engine oil at any time.

In other words, engine oil should be replaced at the time of engine oil change. At this time, a device for reading the remaining oil amount or state of the engine oil is called an oil level gauge (oil level indicator).

As shown in Figs. 1 and 2, the oil level gauge is housed so that the level gauge 3 capable of measuring the oil level can be housed in a pipe 2 made of metal, which is mounted on a swing reducer 1 of a construction machine or the like. Combined. In this case, an oil level indicator (not shown) indicating a maximum point and a minimum point is formed at the lower end of the level gauge 3 so that the oil amount can be measured.

Therefore, when oil is deposited at a position below the minimum point of the level gauge 3, the oil is replenished, and the color or viscosity of the oil on the level gauge 3 is visually checked to determine whether to replace the oil. Can be.

In the figure, reference numeral 4 is press-molded on the upper outer surface of the level gauge 3, and seals the upper end of the inner surface of the pipe 2 to prevent foreign substances such as dust, moisture, etc. from entering the outside, the pipe (2) It is a sealing member made of rubber material to prevent the separation of the level gauge (3) from, 5 is a handle formed on the top of the level gauge (3).

The oil level gauge for a vehicle according to the prior art fixes the level gauge 3 to the pipe 2 by mutual interference fitting of the uneven portion formed on the outer surface of the sealing member 4 and the inner surface of the pipe 2. As a result, it is difficult to receive the level gauge 3 from the pipe 2 to check and measure the oil amount.

In addition, the mutual tightening force of the pipe 2 and the sealing member 4 is relaxed due to the wear of the sealing member 4 due to the repeated storage of the level gauge 3 from the pipe 2. Therefore, when driving on the unpaved road, the separation phenomenon in which the sealing member 4 is separated from the pipe 2 due to the shaking of the vehicle is pushed out.

As a result, when foreign matter such as dust or moisture penetrates into the gearbox from the outside through a gap between the outer surface of the sealing member 4 and the inner surface of the pipe 2, damage to the corresponding parts inside the gearbox, There is a problem that may cause corrosion.

On the other hand, the average value of measuring the maximum load required when coupling the sealing member 4 to the pipe (2) for mounting the level gauge (3) appears as 16.7Kgf (shown in the graph of Figure 3 (a)) , The average value of the maximum load required when separating the sealing member 4 from the pipe 2 to separate the level gauge 3 is shown as 20.9 Kgf (shown in the graph of FIG. 3 (b)). In other words, it is difficult to accommodate the level range 3 from the pipe 2 and thus has a problem of inferior reliability and workability.

Embodiments of the present invention can easily accommodate the oil level gauge for the pipe mounted on the engine of the equipment to provide convenience to the user, to prevent the change of the mutual tightening force of the pipe and level gauge, and vibration of the vehicle It relates to an oil level gauge for a vehicle which can prevent departure from the pipe due to wear of the level gauge caused by the back and the like.

Oil level gauge for a vehicle according to an embodiment of the present invention,

In a vehicle oil level gauge comprising a pipe mounted on the engine of the vehicle, and a level gauge coupled to the pipe so as to be receivable, and an oil level indicator formed at the lower end thereof.

An inlet-side inner circumferential surface of the pipe and a separation preventing protrusion formed on the outer surface of the level gauge at a position corresponding thereto.

According to a preferred embodiment, the mutual contact surface inclination angles of the separation preventing protrusions respectively formed on the pipe and the level gauge described above are formed in the range of 35 ° to 50 °.

In addition, the inner diameter of the pipe is formed to be smaller than the outer diameter of the level gauge at the upper portion of the above-mentioned release preventing protrusion of the level gauge, and the inner diameter of the pipe is formed to be larger than the outer diameter of the level gauge at the lower portion of the level gauge.

As described above, the vehicle oil level gauge according to the embodiment of the present invention has the following advantages.

As the protrusion for preventing the departure is formed to be inclined at the mutual contact surface between the pipe and the level gauge forming the oil level gauge, it is possible to prevent the departure of the level gauge due to vibration of the vehicle.

In addition, by minimizing the interval between the tightening force generated between the pipe and the level gauge, it provides convenience to the user by minimizing the external force required when storing the level gauge from the pipe, and suppresses the wear of the level gauge of the rubber material Durability can be increased.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which is intended to explain in detail enough to enable those skilled in the art to easily practice the present invention. This does not mean that the technical spirit and scope of the present invention is limited.

As shown in Figures 4 to 5 (a, b), the vehicle oil level gauge according to an embodiment of the present invention,

A pipe 12 mounted on an engine of the vehicle (such as an engine or a transmission), and a level gauge 13 (oil level display unit) coupled to the pipe so as to be stored therein and having an oil level indicator (not shown) formed at the lower end thereof. In the oil level gauge for a vehicle comprising a gauge stick formed on the lower side and a sealing member that is press-molded on the gauge stick upper side),

The inlet-side inner circumferential surface of the pipe 12 and the departure preventing protrusions 12a and 13a which are formed to be inclined on the outer surface of the level gauge 13 at a position corresponding thereto, respectively.

The inclination angles of the mutual contact surfaces 12b and 13b of the separation preventing protrusions 12a and 13a formed in the pipe 12 and the level gauge 13, respectively, are formed in the range of 35 ° to 50 °. More preferably, the inclination angles of the contact surfaces 12b and 13b of the separation preventing protrusions 12a and 13a are formed at an angle of 45 °.

On the upper side of the separation preventing protrusion 13a formed in the above-described level gauge 13, the inner diameter of the pipe 12 is formed smaller than the outer diameter of the level gauge 13 (the separation of the level gauge 13 from the pipe 12 Stopper function to prevent), the inner diameter of the pipe 12 is formed larger than the outer diameter of the level gauge 14 in the lower portion of the separation preventing protrusion 13a formed in the level gauge 14 (level gauge due to vibration of the vehicle, etc.) Blocking direct contact of the pipe 12 with the level gauge 13 so as to suppress the occurrence of wear of (13).

In the figure, reference numeral 15 is a handle formed on the top of the level gauge 13.

Hereinafter, an example of use of an oil level gauge for a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 4, when the level gauge 13 is coupled to the pipe 12 forming the oil level gauge, the separation preventing protrusion 12a formed on the inner circumferential surface of the inlet side of the pipe 12 and the corresponding The level gauge 13 with respect to the pipe 12 with little force due to the inclination (35 ° to 50 °) of the mutual contact surfaces 12b and 13b of the separation preventing protrusion 13a formed on the outer surface of the level gauge 13 at the position. Can be combined.

As shown in FIG. 5 (a), it can be seen that the average value of the maximum load required when the level gauge 13 is coupled to the pipe 12 described above is 9.7 Kgf. That is, it can be seen that the required external force (42%) is reduced by 42% compared to the conventional (external force takes 16.7Kgf when combining the level gauge for the same size pipe).

As shown in Fig. 5 (b), when the level gauge 13 is separated from the pipe 12 to check the oil amount, the mutual contact surfaces 12b and 13b of the separation preventing protrusions 12a and 13a are the same. As it is formed obliquely in the direction, the level gauge 13 can be separated from the pipe 12 with little force.

It can be seen that the average value of the maximum load required to separate the level gauge 13 from the pipe 12 is 7Kgf. It can be seen that the external force required is reduced by 66.5% compared to the conventional (external level takes 20.9Kgf when separating the level gauge from the same size pipe).

As shown in FIG. 4, the inner diameter of the pipe 12 described above is formed to be smaller than the outer diameter of the level gauge 13 above the release preventing protrusion 13a of the level gauge 13, and of the level gauge 13. The lower portion of the projection preventing portion 13a for separation is formed larger than the outer diameter of the level gauge 13.

Therefore, after the level gauge 13 is coupled to the pipe 12, direct contact between the outer surface of the level gauge 13 and the inner surface of the pipe 12 may be prevented. Therefore, it is possible to prevent the level gauge 13 from being worn by vibration of the vehicle, etc., and to prevent the level gauge 13 from being separated from the pipe 12 due to the wear of the level gauge 13. In addition, due to the minimization of the mutual tightening force generation interval of the pipe 12 and the level gauge 13 it is possible to reduce the external force required when attaching and detaching the level gauge 13 with respect to the pipe 12.

As shown in FIG. 5 (a, b), when the inclination angles of the contact surfaces 12b and 13b of the above-described separation preventing protrusions 12a and 13a are 35 ° to 50 ° (more specifically, 45 °), It is possible to prevent the level gauge 13 from being separated from the pipe 12 by the vibration of the vehicle, etc., and to easily store the level gauge 13 with respect to the pipe 12 with little force when it is detached and mounted. Can be confirmed from the experimental data.

1 is a schematic diagram for explaining an oil level gauge,

2 is a schematic diagram of a vehicle oil level gauge according to the prior art,

Figure 3 (a) is a graph for explaining the use example of the oil level gauge for a vehicle according to the prior art,

Figure 3 (b) is a graph for explaining the use example of the oil level gauge for a vehicle according to the prior art,

4 is a schematic diagram of a vehicle oil level gauge according to an embodiment of the present invention;

5 (a) is a graph for explaining an example of the use of the vehicle oil level gauge according to an embodiment of the present invention,

5 (b) is a graph for explaining the use of the vehicle oil level gauge according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

12; pipe

12a; Detachment protrusion

12b; Contact surface

13; Level gauge

13a; Detachment protrusion

13b; Contact surface

15; handle

Claims (3)

In a vehicle oil level gauge comprising a pipe mounted on the engine of the vehicle and a level gauge receivably coupled to the pipe and having an oil level indicator formed at a lower end thereof: The oil level gauge for a vehicle, characterized in that it comprises an inlet-side inner circumferential surface of the pipe and a separation preventing protrusion formed on the outer surface of the level gauge at a position corresponding thereto. The oil level gauge for a vehicle according to claim 1, wherein the inclination angles of mutual contact surfaces of the separation preventing protrusions respectively formed on the pipe and the level gauge are formed in a range of 35 ° to 50 °. The inner diameter of the pipe is formed smaller than the outer diameter of the level gauge at the upper side of the protrusion for preventing separation of the level gauge, The oil level gauge for a vehicle, characterized in that the inner diameter of the pipe is formed larger than the outer diameter of the level gauge at the bottom of the protrusion for preventing separation of the level gauge.

Images