JP3636591B2 - Hydraulic fluid reservoir for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle hydraulic fluid reservoir that stores hydraulic fluid to be supplied to a master cylinder of a vehicle.
[0002]
[Prior art]
As this type of prior art, for example, there is one described in JP-A-9-86389.
[0003]
A conventional hydraulic fluid reservoir is divided into a plurality of internal partition walls to form an internal space in which hydraulic fluid can be stored, and extends from the side of the reservoir body to the opposite side of the reservoir body. And an extending portion for forming a liquid passage. One end of the extending portion communicates with the internal space through an opening, and an inlet for injecting a working fluid is provided above the other end, and this inlet is covered with a cap. The hydraulic fluid reservoir is attached to the vehicle in a state where the lengthwise direction of the extending portion is along the longitudinal direction of the vehicle, the inlet side is disposed on the front side, and the opening side is disposed on the rear side.
[0004]
[Problems to be solved by the invention]
Therefore, for example, when the vehicle has a behavior in which the acceleration in the front-rear direction is generated in addition to the acceleration in the left-right direction (such as sudden acceleration / deceleration while traveling on a curve), the hydraulic fluid stored in the internal space is The possibility of spilling into the passage is increased. In this conventional hydraulic fluid reservoir, once the hydraulic fluid flows out into the fluid passage, the hydraulic fluid moves toward the inlet, and the hydraulic fluid adheres to the cap. There is a risk of leaking outside through a gap with the covering cap.
[0005]
The present invention has been made in view of the above-mentioned problems, and even if turning or the like is performed during braking or acceleration of a vehicle, the hydraulic fluid stored in the internal space may adhere to the cap and leak from the inlet to the outside. It is an object to provide a vehicle hydraulic fluid reservoir that can be reduced.
[0006]
[Means for Solving the Problems]
The above-described problems include a reservoir body that forms an internal space in which hydraulic fluid can be stored, a hollow extending portion that extends in a substantially horizontal direction outward from a side portion of the reservoir body, and a cap that is covered with a cap. An injection port for injecting the working fluid into the space, the injection port is provided on the distal end side of the extending portion, and the extending portion forms a liquid passage that communicates between the injection port and the internal space In the vehicle hydraulic fluid reservoir, a partition wall is formed in the liquid passage that is formed from the bottom portion of the extending portion toward the upper wall and restricts the movement of the hydraulic fluid from the inner space side toward the inlet side. The partition wall includes a substantially U-shaped first partition wall including a pair of wall portions extending in the longitudinal direction of the extending portion and a connection wall portion communicating between the pair of wall portions on the inlet side. The hydraulic fluid reservoir for the vehicle It is solved.
[0007]
In the present invention, a partition including a substantially U-shaped first partition including a pair of walls extending in the longitudinal direction of the extending portion and a connection wall connecting the pair of walls on the injection port side, Since it is installed in the liquid passage that communicates between the inlet and the internal space and the movement of the hydraulic fluid from the internal space side to the inlet side is regulated, the hydraulic fluid may leak from the inlet to the outside Can be reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0009]
The vehicle hydraulic fluid reservoir according to the present embodiment is connected to two hydraulic chambers of a master cylinder (not shown) via connection ports 26a and 26b. The reservoir body 11 formed by welding the upper body 11a and the lower body 11b is formed with an internal space 14 in which a working fluid can be stored. A substantially cylindrical guide portion 27 is formed in the internal space 14 so as to extend upward from the bottom portion of the lower main body 11b by a predetermined height, and this inner peripheral wall surface is permanently attached to the bottom portion for detecting a liquid level (not shown). The float with the magnet attached is guided.
[0010]
A hollow extending portion 12 is formed to extend from the side portion of the reservoir body 11 outward in a substantially horizontal direction. Further, a connecting portion 24 extending from the side wall surface of the reservoir body 11 into the internal space 14 in a direction orthogonal to the longitudinal direction of the extending portion 12 is formed. An opening 24 a is formed at the end of the connecting portion 24 on the inner space 14 side, and the other side is open to the extending portion 12. The internal space 14 is provided with a restriction wall 25 that faces the opening 24a of the connecting portion 24 and restricts the movement of the hydraulic fluid to the extending portion 12 through the opening 24a. On the other hand, an injection port 15 that is covered with a cap 13 and injects the working fluid into the internal space 14 is formed above the distal end side of the extending portion 12. The extending portion 12 forms a liquid passage 16 that communicates between the inlet 15 and the internal space 14.
[0011]
The extending portion 12 is connected to a pair of wall portions 17a and 17b extending in the longitudinal direction of the extending portion 12, a connection wall portion 17c connecting the pair of wall portions 17a and 17b on the injection port 15 side, and the wall portion 17a. The inlet 15 extends further to the distal end side of the extending portion 12 than the connection position with the wall portion 17c and is offset to the opposite side when viewed in the transverse direction of the extending portion 12 so as not to prevent the injection of the working fluid from the inlet 15. A substantially U-shaped first partition wall 17 formed of the extension portion 17d formed in this manner is provided. The pair of wall portions 17a and 17b, the connection wall portion 17c and the extension portion 17d are integrally formed.
[0012]
Further, the extending portion 12 integrally extends from the side wall surface 18 on the inner space 14 side of the extending portion 12 along the longitudinal direction of the extending portion 12, and a tip end portion 19 a is interposed between the pair of wall portions 17 a and 17 b. An entering second partition wall 19 is formed. The distal end portion 19a of the second partition wall 19 is offset with respect to the center between the pair of wall portions 17a and 17b and is disposed close to the wall portion 17a. In addition, a slit portion 21 is formed at an end portion on the side wall surface 18 side of the second partition wall 19 on the upper main body 11a side. 2 is a view showing the lower main body 11b side, the slit portion 21 formed on the upper main body 11a side is shown by a broken line in FIG. The slit portion 21 enables fluid communication between both sides of the second partition wall 19 and also enables air venting in the internal space 14 when hydraulic fluid is injected.
[0013]
The first and second partition walls 17 and 19 are formed on the upper body 11a and the lower body 11b, respectively, and the first and second partition walls 17 and 19 are also welded when the upper body 11a and the lower body 11b are welded. Thus, it is formed as a partition extending from the bottom portion of the extending portion 12 to the upper wall.
[0014]
A first horizontal bottom surface 22 and a second horizontal bottom surface 23 whose bottom is higher than the first horizontal bottom surface 22 are formed on the bottom portion of the extending portion 12, and the wall portion 17 b and the second partition wall 19 are The connecting wall portion 17c, the wall portion 17a, and the extension portion 17d are located on the second horizontal bottom surface 23, and are located at the boundary between the first horizontal bottom surface 22 and the second horizontal bottom surface 23. The height position of the second horizontal bottom surface 23 is located above the liquid level of the hydraulic fluid that can be stored in the reservoir body 11 at the maximum, and restricts the movement of the hydraulic fluid toward the extending portion 12. Further, an inclined surface 28 is formed in the vicinity of the distal end portion 19a of the second partition wall 19 so as to incline downward in the direction from the distal end side of the extending portion 12 toward the reservoir body 11 side in FIG. The 2nd horizontal bottom face 23 located in 1 and the 1st horizontal bottom face 22 located in the lower side of inclination are connected. In addition, in the bottom portion of the extending portion 12 below the injection port 15, there are inclined surfaces 29 and 30 that are inclined downward in the direction from the distal end side of the extending portion 12 to the reservoir body 11 side in the drawing, respectively. A horizontal bottom surface 31 sandwiched between the two inclined surfaces 29 and 30 is formed. The lower side of the inclined surface 30 is connected to the first horizontal bottom surface 22. The injection port 15 is located substantially above the boundary between the inclined surface 29 and the horizontal bottom surface 31. The hydraulic fluid reservoir according to the present embodiment configured as described above has the extending portion 12 along the longitudinal direction of the vehicle, the injection port 15 side on the front side, and the connecting portion 24 on the rear side. It is attached to the vehicle in a state of being arranged on the side.
[0015]
The configuration of the vehicle hydraulic fluid reservoir according to the present embodiment has been described above. Next, this operation will be described.
[0016]
When the vehicle behaves to receive acceleration / deceleration in the front-rear direction, even if the hydraulic fluid in the internal space 14 tilts and moves in the direction of arrow A in FIG. Since the opening is perpendicular to the direction, the outflow of the hydraulic fluid from the internal space 14 through the opening 24a can be restricted. Further, even if the vehicle turns and the hydraulic fluid in the internal space 14 moves in the direction B in FIG. 2, the restriction wall 25 provided opposite the opening 24a also causes the opening 24a to pass through the opening 24a. It is possible to regulate the outflow of all the hydraulic fluid from the internal space 14.
[0017]
In addition, when the vehicle turns during acceleration / deceleration in the front-rear direction and causes a behavior in which the acceleration / deceleration in the left-right direction is generated in addition to the front-rear direction, the hydraulic fluid stored in the internal space 14 opens the opening 24a. However, in the vehicle hydraulic fluid reservoir according to the present embodiment, a partition wall is provided that restricts the hydraulic fluid that has flowed out to the extending portion 12 from moving toward the inlet 15. It has been. That is, even if the working fluid flows out from the internal space 14 to the liquid passage 16 of the extending portion 12 via the connecting portion 24, the tip 19a of the second partition wall 19 formed in the liquid passage 16 is substantially U-shaped. The hydraulic fluid that has flowed out toward the cavity 32 surrounded by the first partition wall 17 is offset toward the wall 17a so that the flow area of the hydraulic fluid toward the cavity 32 can be increased. It becomes easy to enter. Since the first partition wall 17 has a substantially U shape as shown in FIG. 2, the hydraulic fluid in the void 32 is restricted from moving toward the inlet 15. Further, the movement of the hydraulic fluid toward the inlet 15 side is also restricted by the inclined surfaces 29 and 30, and the hydraulic fluid that has flowed out to the extending portion 12 is easily returned to the internal space 14. The passage 16a functions as a so-called air vent passage for venting air in the internal space 14, but the extension portion 17d prevents the working fluid from flowing into the air vent passage 16a when the working fluid is injected. In addition, when the working fluid returns, the working fluid that has flowed out from the space 32 through the space between the wall portion 17 a and the tip portion 19 a is returned into the internal space 14 through the slit portion 21.
[0018]
【The invention's effect】
As described above, according to the vehicle hydraulic fluid reservoir of the present invention, even if hydraulic fluid flows out from the internal space side into the liquid passage communicating between the inlet and the internal space, Since the partition wall that restricts the movement of the working fluid toward the injection port is provided, the possibility that the working fluid leaks outside through the gap between the injection port and the cap can be reduced.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a vehicle hydraulic fluid reservoir according to an embodiment of the present invention.
2 is a cross-sectional view taken along line [2]-[2] in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Reservoir main body 12 Extension part 13 Cap 14 Internal space 15 Inlet 16 Liquid passage 17 1st partition 19 Second partition 24 Connection part

Claims (13)

A reservoir body that forms an internal space in which the hydraulic fluid can be stored, a hollow extending portion that extends in a substantially horizontal direction outward from a side portion of the reservoir body, and a working fluid that is covered with a cap A vehicle hydraulic fluid reservoir provided with an injection port for injecting, wherein the injection port is provided on a distal end side of the extending portion, and a liquid passage is formed by the extending portion to communicate between the injection port and the internal space In
A partition wall is formed in the liquid passage that is formed from the bottom portion of the extending portion toward the upper wall, and regulates the movement of the working fluid from the inner space side toward the inlet side,
The partition includes a substantially U-shaped first partition composed of a pair of wall portions extending in the longitudinal direction of the extending portion and a connection wall portion communicating between the pair of wall portions on the inlet side. A hydraulic fluid reservoir for vehicles. In addition to the first partition wall, the partition wall extends from the side wall surface of the extension portion on the inner space side along the longitudinal direction of the extension portion, and a tip portion enters between the pair of wall portions. The vehicle hydraulic fluid reservoir according to claim 1 , further comprising a partition wall. The pair of the one wall portion, the connecting wall portion and the vehicle hydraulic fluid reservoir according to claim 1 which extension is provided extending further to the inlet side of the continuously provided position of. In addition to the first partition wall, the partition wall extends from the side wall surface of the extension portion on the inner space side along the longitudinal direction of the extension portion, and a tip portion enters between the pair of wall portions. With partition walls,
Furthermore the one of the pair of wall portions, the vehicle hydraulic fluid reservoir according to claim 1, extension extending further the inlet side from the connecting position between the connecting wall portion. The vehicle hydraulic fluid reservoir according to claim 3 or claim 4 is provided to be offset on the opposite side of the inlet when viewed in the transverse direction of the extended portion is the extending portion. The distal end portion of the second partition wall can be expanded from the inner space to the center between the pair of wall portions so as to expand the flow area of the hydraulic fluid toward the space surrounded by the substantially U-shaped first partition wall. claim Te are arranged offset 2, the vehicle hydraulic fluid reservoir according to any one of claims 4 and 5. The vehicle hydraulic fluid reservoir according to any one of claims 4 to 6 , wherein a distal end portion of the second partition wall is brought close to one of the pair of wall portions provided with the extension portion. Wherein an end portion of the inner space side of the second partition wall, according to claim 2 in which the slit portion is formed to allow liquid communication between the two sides of the second partition wall, 4, 5, claim The vehicle hydraulic fluid reservoir according to any one of claims 6 and 7 . A bottom portion of the extending portion is formed with a first horizontal bottom surface and a second horizontal bottom surface provided on the upper wall side from the first horizontal bottom surface, and one of the pair of wall portions, the second partition wall, Is located at the boundary between the first horizontal bottom surface and the second horizontal bottom surface, and the other of the pair of wall portions and the connection wall portion are disposed on the second horizontal bottom surface. The vehicle hydraulic fluid reservoir according to any one of claims 2 , 4 , 5 , 6 , 7, and 8 . The vehicle hydraulic fluid reservoir according to claim 9 , wherein the second horizontal bottom surface is located above a level of hydraulic fluid that can be stored at a maximum in the reservoir body. A connecting portion that connects the reservoir main body and the extending portion is provided with a connecting portion that extends from the side wall surface into the internal space in a direction orthogonal to the longitudinal direction of the extending portion. The vehicle hydraulic fluid reservoir according to any one of claims 1 to 10 , wherein the fluid passage and the internal space are communicated with each other through an opening formed by a side end. The vehicle hydraulic fluid reservoir according to claim 11 , wherein the internal space is provided with a regulation wall that faces the opening and regulates the movement of the hydraulic fluid through the opening. The reservoir body is formed by welding an upper body and a lower body, the partition is formed on each of the upper body and the lower body, and the upper body and the lower body are welded to thereby form the partition wall. The vehicle hydraulic fluid reservoir according to any one of claims 1 to 12, wherein a part formed on the upper body and a part formed on the lower body are welded to form the partition wall .

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