JP2006103448A - Reservoir device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reservoir device for a vehicle capable of preventing air from staying in feeding of oil and certainly preventing leakage of operation oil when a vehicle body is largely inclined. <P>SOLUTION: In the reservoir device 6 for the vehicle for feeding the operation oil stored in a tank body 7 to a master cylinder, an oil feed port 7b is formed at a position deviated from a tank center b of a ceiling wall 7a of the tank body 7. The ceiling wall 7a is formed in the shape of square pyramid having an apex part c set such that at least a part is overlapped in the oil feed port 7b. A vertical rib 7m surrounding the above apex part c and having at least one opened end is formed on an opposite side to a direction of deviation of an outer periphery of the oil feed port 7b on an inner surface of the ceiling wall 7a and an opened end 7n of the vertical rib 7m is positioned near the apex part c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicular reservoir device configured to supply hydraulic fluid stored in a tank body to a master cylinder.

  For example, in an automobile brake device, a tank body filled with hydraulic fluid in a reservoir device is connected in communication with a master cylinder that generates hydraulic pressure corresponding to the amount of depression of a brake pedal, and the generated hydraulic pressure is supplied to a wheel braking device. Is configured to do.

  In such a reservoir device, the height of the tank body is made as small as possible from the viewpoint of securing the hydraulic oil capacity and securing the arrangement space in the narrow vehicle body, and the vehicle width direction dimension and the front-rear direction dimension are increased accordingly. In addition, the fuel filler port may be formed at a position deviated from the center of the tank body.

By the way, the reservoir device is provided with a partition wall that blocks outflow of hydraulic oil in the vicinity of the oil supply port from the viewpoint of preventing the hydraulic oil from leaking from the oil supply port due to vibration during traveling and impact during acceleration / deceleration. A partition wall having a labyrinth structure is provided in the tank body to restrict the hydraulic oil flowing to the oil inlet side (see, for example, Patent Documents 1 and 2).
JP 2004-75003 A Japanese Patent Laid-Open No. 11-301452

  However, in any of the reservoir devices according to the above-mentioned conventional publications, air easily accumulates in the tank body during refueling, and when the vehicle is tilted by a vehicle transporter, the hydraulic oil leaks from the air vent hole of the refueling port. There is a concern that it will come out. In addition, when the labyrinth structure is adopted, there is a problem that the structure of the tank body is complicated.

  The present invention has been made in view of the above circumstances, and provides a vehicular reservoir device that can prevent air from accumulating at the time of refueling with a simple structure and prevent leakage of hydraulic oil when the vehicle body is largely inclined. The purpose is to do.

  According to a first aspect of the present invention, in the vehicular reservoir device for supplying the hydraulic fluid stored in the tank body to the master cylinder, the hydraulic fluid supply port is located at a position deviated from the center of the tank on the ceiling wall of the tank body. The ceiling wall is formed in a conical shape having a top that is set so that at least a part of the ceiling wall overlaps the liquid supply port, and the ceiling wall has an outer periphery of the liquid supply port on the inner surface of the ceiling wall. A vertical rib is formed on the side opposite to the direction of the deflection, the top being surrounded by a predetermined range, and at least one end thereof being open to the inside of the tank. The open end of the vertical rib is near the top It is characterized by being located in.

  According to a second aspect of the present invention, in the first aspect, the predetermined range surrounded by the vertical ribs is at least a half circumference.

  The invention of claim 3 is characterized in that, in claim 1, the other end of the vertical rib is formed by extending from an inner peripheral wall constituting the tank body.

  A fourth aspect of the present invention is characterized in that, in the first aspect, the tank main body is set to have a larger length direction and width direction than the height direction.

  According to the reservoir device of the present invention, the ceiling wall of the tank body is formed to have a conical shape that becomes higher as it approaches the top set in the liquid supply port. The inner surface of the tank rises toward the top, is discharged to the outside through the liquid supply port, and air can be prevented from accumulating in the tank body. As a result, the tank body can be made small while ensuring the required capacity of the hydraulic fluid, and an arrangement space for arranging in a narrow vehicle body can be easily ensured. That is, in the conventional structure, the capacity of the tank main body needs to be a capacity that allows for the amount of air accumulation, and there is a problem that the tank main body is increased in size, but the present invention can solve this problem.

  In the present invention, since the side opposite to the displacement direction of the liquid supply port at the top is surrounded by the vertical rib, air from the liquid supply port is opposite to the displacement of the tank body even when the tank body is inclined. It is possible to suppress entry into the portion, and therefore it is possible to suppress the working fluid on the tank center side from flowing to the liquid supply port side. Thereby, for example, when the vehicle body is loaded with a large inclination so that the front portion is positioned upward with a transport vehicle and transported, the hydraulic fluid can be prevented from leaking from the liquid supply port. In addition, even if the vehicle body changes suddenly due to acceleration / deceleration during driving, the fluid level of the hydraulic oil does not fluctuate greatly, preventing malfunction of the fluid level detector and increasing the accuracy of detection of the fluid level. be able to.

  In addition, since at least one end of the vertical rib is open and the open end is located in the vicinity of the top, the internal air is supplied through the top from the open end of the vertical rib during the liquid supply. It will be discharged from the mouth, and the vertical rib will not interfere with the discharge of air during the liquid supply.

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

  1 to 6 are views for explaining a vehicular reservoir device according to an embodiment of the present invention. FIG. 1 is a side view of a brake device including the reservoir device, and FIG. 2 is a cross-sectional side view of the reservoir device. 3 is a perspective view of the reservoir device, FIG. 4, FIG. 5 and FIG. 6 are respectively a partially sectional rear view of the reservoir device (sectional view taken along line IV-IV in FIG. 5), a plan view, and a partially sectional side view (FIG. 5 is a sectional view taken along line VI-VI).

  In the figure, reference numeral 1 denotes an automobile brake device, which is disposed at the right end in the vehicle width direction in an instrument panel 2 disposed in front of the driver's seat. Reference numeral 2a denotes a meter cluster provided with a speedometer and the like.

  The brake device 1 includes a master cylinder 3, a brake booster 4 connected and fixed to the front side of the master cylinder 3, and a piston (not shown) movably inserted into the master cylinder 3. And a brake pedal (not shown) connected to the push rod 5, and a reservoir device 6 that supplies hydraulic oil to the master cylinder 3. The brake booster 4 is formed with an intake port 4a connected to the intake system of the engine.

  When the brake device 1 is depressed, the push rod 5 moves the piston in the master cylinder 3 with the depression force and the auxiliary force of the brake booster 4, and the hydraulic pressure generated thereby is supplied to a brake pipe (not shown). It is comprised so that it may supply to the brake device of each wheel via.

  The reservoir device 6 is disposed in the vicinity of the upper wall 2b of the instrument panel 2, and an opening that is opened and closed by a lid member (not shown) is formed in a portion of the upper wall 2b that faces the reservoir device 6.

  In the reservoir device 6, a cylindrical oil supply port 7b is integrally connected to the ceiling wall 7a of the tank body 7 filled with hydraulic oil, and a pair of hydraulic oil supply ports 7d and 7d are formed on the bottom wall 7c. Each of the supply ports 7d is connected to the master cylinder 3 via supply hoses 8 and 8.

  The tank body 7 is formed by oil-tightly joining a lower tank portion 7e and an upper tank portion 7f that are divided into upper and lower parts, and each fixed body formed on the ceiling wall 7a and the rear vertical wall 7g. It is attached and fixed to the vehicle body (not shown) via the parts 7h and 7i. In this vehicle body mounted state, the tank body 7 is mounted so as to be horizontal.

  A float chamber 7j that opens upward is formed in the bottom wall 7c of the tank body 7, and a float 9 that detects the level of hydraulic oil is disposed in the float chamber 7j. A switch chamber 7k for storing the reed switch 10 is formed below the float chamber 7j, and a lead wire 11 led to the outside is connected to the reed switch 10. When the hydraulic oil level reaches the MIN position, the float 9 activates the reed switch 10, thereby turning on a warning light (not shown) disposed in the meter cluster 2 a.

  A filter 13 for filtering the hydraulic oil is inserted and disposed in the oil supply port 7b. A cover cap 15 is detachably fitted to the fuel filler opening 7b. A body cap 16 and a plate cap 17 are mounted in the cover cap 15, and a seal member 18 for sealing the upper end opening 7 b ′ of the fuel filler port 7 b is mounted on the body cap 15.

  The body cap 16 is formed with an air vent hole 16a for discharging the air in the tank body 7 to the outside. A saucer 19 is mounted on the outer periphery of the fuel filler opening 7b.

  The tank body 7 has a front-rear (length) dimension and a left-right (vehicle width) dimension larger than the height dimension. Specifically, the front-rear dimension and the width dimension with respect to the height dimension. Is about 2 to 3 times.

  As shown in FIG. 5, the refueling port 7 b is a position deviated from the tank center b, which is the intersection of the diagonal lines a and a of the tank body 7, to the rear side of the vehicle and the center side in the vehicle width direction, The tank body 7 is formed in the vehicle rear inner corner portion.

  The ceiling wall 7a of the tank body 7 is formed in a substantially quadrangular pyramid shape so as to become higher as it gets closer to the top c set near the vehicle outer edge in the fuel filler opening 7b. The top c is set so as to overlap the rear of the tank center b of the tank body 7 and in the fuel filler port 7b, so that the ceiling wall 7a is arranged in the front-rear and left-right directions so that the top c is at the highest position. Inclined.

  In addition, a J-shaped vertical rib 7m extending so as to surround the tank center b side of the oil supply opening 7b, that is, the side opposite to the direction of the displacement, about a half circumference is integrally formed on the inner surface of the ceiling wall 7a in the tank body 7. Is formed. The vertical ribs 7m extend from the inner wall 7p of the tank body 7 in the vehicle width direction, and then extend in an arc shape along the fuel filler port 7b. The inner end of the vertical rib 7m is integrally formed with the inner wall 7p, and the outer end is open. This open end 7n is located in the immediate vicinity of the top c.

  According to the present embodiment, the ceiling wall 7a of the tank body 7 is formed in a quadrangular pyramid shape that becomes higher as it approaches the top c set in the fuel filler opening 7b. Since the inner surface of 7a rises toward the top c and is discharged to the outside through the fuel filler port 7b, it is possible to prevent air from accumulating in the tank body 7. Note that the air on the left side of the vertical rib 7m in FIG. 5 flows along the vertical rib 7m toward the apex c as shown by the arrow d in the figure, and the vertical rib 7m obstructs air discharge. There is nothing. In this way, the tank main body 7 can be reduced in size while ensuring the required capacity of the hydraulic oil, and an arrangement space for arrangement in the narrow instrument panel 1 can be easily ensured. When the capacity of the tank main body is set so as to allow for the amount of air accumulation, there is a problem that the tank main body is enlarged accordingly, but this embodiment can avoid this problem.

  In the present embodiment, a vertical rib 7m extending so as to surround the central portion side of the fuel filler port 7b approximately in a half circumference is integrally formed in the ceiling wall 7a of the tank body 7, and the open end 7n of the vertical rib 7m is formed at the top. For example, as shown by a two-dot chain line in FIG. 6, even if the tank body 7 is tilted to the state where hydraulic oil leakage is most likely to occur, specifically, the vehicle body is Even in the case where the oil supply port 7b is inclined so as to be lowered, the hydraulic oil can be prevented from leaking from the oil supply port 7b.

  This point will be described in more detail. When the air that has entered the oil supply port 7b flows into the tank center b, the internal hydraulic oil flows out by that amount. Inflow to the tank center b side is prevented, and therefore leakage of hydraulic oil can be avoided.

  Further, even when the vehicle body undergoes a sudden change in behavior due to acceleration or deceleration during traveling, the fluid level of the hydraulic oil does not fluctuate greatly, and the accuracy of detection of the fluid level by the float 9 can be increased.

  In the above embodiment, the case where the present invention is applied to a reservoir device of a brake device installed in an automobile has been described as an example. However, the present invention is also applied to a reservoir device of a clutch device or a power steering device, for example. In this case, the same effect as the above embodiment can be obtained.

  Moreover, in the said embodiment, although the vertical rib was made into the J-shape substantially along the oil filler port, for example, the V-shaped or U-shaped vertical rib surrounding the substantially half circumference of the fuel filler port is formed, and both ends of the vertical rib are formed. May be opened. Further, the ceiling wall is not limited to a quadrangular pyramid shape, and may be a cone, a triangular pyramid, or a polygonal pyramid of four or more.

It is a side view of a brake device provided with a reservoir device for vehicles by one embodiment of the present invention. It is a cross-sectional side view of the reservoir device. It is a perspective view of the reservoir device. FIG. 6 is a partial sectional rear view of the reservoir device (a sectional view taken along line IV-IV in FIG. 5). It is a top view of the said reservoir device. FIG. 6 is a partial cross-sectional side view of the reservoir device (a cross-sectional view taken along line VI-VI in FIG. 5).

Explanation of symbols

6 Reservoir device 7 Tank body 7a Ceiling wall 7b Filling port 7m Vertical rib 7n Open end b Tank center c Top

Claims (4)

  In the vehicular reservoir device for supplying the hydraulic fluid stored in the tank body to the master cylinder, the hydraulic fluid supply port is formed at a position deviated from the center of the tank on the ceiling wall of the tank body. The ceiling wall is formed in a cone shape having a top portion set so as to at least partially overlap the liquid supply port, and is opposite to the direction of the displacement of the outer periphery of the liquid supply port on the inner surface of the ceiling wall. A vertical rib is formed on the side that surrounds the top portion within a predetermined range, and at least one end thereof is open to the inside of the tank, and the open end of the vertical rib is located in the vicinity of the top portion. A vehicular reservoir device.   2. The vehicular reservoir device according to claim 1, wherein the predetermined range surrounded by the vertical ribs is at least a half circumference.     2. The vehicular reservoir device according to claim 1, wherein the other end of the vertical rib is formed by extending from an inner peripheral wall constituting the tank body.     The vehicular reservoir device according to claim 1, wherein the tank body is set to have a length direction and a width direction larger than a height direction.

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