JP2011126322A - Reservoir tank and hydraulic operation device with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive reservoir tank flexibly coping with various vehicles of different types and different specifications and allowing easy installation of a clutch connection pipe with high accuracy. <P>SOLUTION: Two nipple installation port parts 23, 24 for clutch connection are provided on a base body 12 of a lower half body 9 of a reservoir tank 5. In such a case, the nipple installation port parts 23, 24 for clutch connection are disposed at different positions on an outer wall of the base body 12 partitioning a clutch operating fluid reservoir. A nipple 13 for clutch connection which supplies operating liquid in the clutch operating fluid reservoir to the clutch operating fluid reservoir is integrally provided on one nipple installation port part 23 for clutch connection, and the other nipple installation port part 24 for clutch connection is closed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention is used in a hydraulic actuator including a hydraulic brake device and a hydraulic clutch device using hydraulic pressure such as hydraulic pressure. The technical field of a reservoir tank that stores hydraulic fluid and a hydraulic operation including the reservoir tank The present invention relates to the technical field of devices.

  Conventionally, in vehicles such as automobiles, there are vehicles that employ a hydraulic brake device or a hydraulic clutch device using hydraulic pressure. In these hydraulic brake devices and hydraulic clutch devices, a master cylinder that generates hydraulic pressure and a reservoir tank that stores hydraulic fluid supplied to the master cylinder are used.

  This type of conventional reservoir tank is divided into a brake hydraulic fluid storage chamber for storing hydraulic fluid supplied to the hydraulic brake device and a clutch hydraulic fluid storage chamber for storing hydraulic fluid supplied to the hydraulic clutch device. A reservoir tank having a formed reservoir body is known (see, for example, Patent Document 1). The reservoir tank described in Patent Document 1 protrudes from the outer wall of the reservoir tank body and has a clutch connection pipe for supplying the hydraulic fluid in the clutch hydraulic fluid storage chamber to the hydraulic clutch device. The reservoir main body, the brake hydraulic fluid storage chamber, the clutch hydraulic fluid storage chamber, and the clutch connection pipe portion are integrally formed of resin.

JP 2008-265561 A.

  By the way, the reservoir tank is mounted in the engine room of the vehicle. And many vehicle members, such as an engine, a transmission, a clutch master cylinder, a brake master cylinder, are accommodated in the engine room. In order to prevent interference with these many vehicle members, the position and size of the space in which the reservoir tank is disposed are limited. Moreover, the layout of installation of these vehicle members varies depending on the vehicle type and vehicle specifications. For this reason, the position of the clutch connecting pipe portion of the reservoir tank is often different for each vehicle. Accordingly, a reservoir tank having a different position of the clutch connecting pipe portion is prepared for each vehicle.

  However, in the reservoir tank disclosed in Patent Document 1, since one clutch connection pipe portion is uniquely positioned on the reservoir body, a reservoir tank having a different position of the clutch connection pipe portion is prepared for each vehicle. Must. For this reason, it is necessary to create a mold for forming a reservoir tank for each of a plurality of vehicles having different installation layouts, and there is a problem in that the number of molds increases and mold costs increase. As a result, the cost of the reservoir tank is increased.

  The present invention has been made in view of such circumstances, and an object thereof is to flexibly cope with various vehicles having different vehicle types and vehicle specifications, and to easily and accurately install the clutch connection pipe portion. It is an object to provide an inexpensive reservoir tank and a hydraulic actuator including the same.

In order to solve the above-mentioned problems, a reservoir tank of the present invention is a reservoir tank having at least a brake hydraulic fluid storage chamber and a clutch hydraulic fluid storage chamber each storing hydraulic fluid therein, and a base body and the base body integrated with each other. And a plurality of clutch connection pipe part installation port parts are provided at different positions on the outer wall of the base body that define the clutch hydraulic fluid storage chamber, A clutch master cylinder connection pipe for supplying hydraulic fluid in the clutch hydraulic fluid storage chamber to the clutch hydraulic fluid storage chamber is provided in any one of the plurality of clutch connection pipe installation ports. All other clutch connection pipe portion installation port portions are closed.

The reservoir tank of the present invention is characterized in that the plurality of clutch connecting pipe installation ports are provided on at least one outer wall in the front-rear and left-right directions of the base body in a vehicle-mounted state.
Furthermore, the reservoir tank of the present invention is characterized in that the installation positions of at least a part of the plurality of clutch connection pipe part installation / installation port parts are set to different heights depending on the vehicle mounted state.

  Furthermore, the hydraulic pressure operating device of the present invention includes a reservoir tank that stores hydraulic fluid, a hydraulic brake device that performs a brake operation by supplying hydraulic fluid in the reservoir tank, and hydraulic fluid in the reservoir tank. And a hydraulic clutch device that performs a clutch operation by being supplied, wherein the reservoir tank is any one of the reservoir tanks of the present invention described above.

  According to the reservoir tank of the present invention configured as described above, the reservoir tank is formed by using a base body in which a plurality of clutch connection pipe portion installation port portions are provided at different positions of the reservoir tank. And according to a vehicle model and vehicle specification, the clutch connection pipe part is selectively provided in any one of the some clutch connection pipe part installation port part. Accordingly, it is possible to use a common base for the reservoir tank for a plurality of vehicles having different layouts for installing the vehicle members. Thereby, it is not necessary to use a reservoir tank molding die for each of the plurality of vehicles having different installation layouts, and the die cost can be effectively reduced. As a result, the cost of the reservoir tank can be reduced. In particular, in a derivative vehicle in which a part of the basic vehicle is changed, the installation layout of the vehicle members is similar, and therefore the cost of the reservoir tank can be further effectively reduced.

  Further, since the projecting amount of the clutch connection pipe installation port portion from the outer wall of the base is relatively small, when the reservoir tank is mounted on the vehicle, the clutch connection pipe installation port portion that is not used is another member of the vehicle. Interference with can be suppressed. As a result, the degree of freedom of installation of the reservoir tank can be increased even if a clutch connection pipe installation port portion that is not used is provided.

  Further, since the clutch connection pipe part installation port part is provided by being positioned in advance, the mold can be set and arranged relatively easily and accurately. This makes it possible to quickly form the clutch connecting pipe.

  On the other hand, according to the hydraulic actuator using the reservoir tank of the present invention, the reservoir tank using a common base can be used for vehicles having different vehicle member layouts, so the hydraulic actuator is arranged efficiently. It becomes possible.

It is a figure showing typically a hydraulic actuator provided with an example of an embodiment of a reservoir tank concerning the present invention. It is the figure which looked at the example of embodiment of the reservoir tank concerning this invention from the direction orthogonal to the longitudinal direction and the left-right direction of a reservoir tank. It is a top view of the base | substrate of the lower half body of a reservoir tank. It is the figure which looked at the base | substrate of the lower half body of a reservoir tank from the direction orthogonal to the longitudinal direction and the left-right direction of a reservoir tank. (A) is a cross-sectional view taken along line VA-VA in FIG. 4, (b) is a cross-sectional view taken along line VB-VB in FIGS. 2 and 6, and (c) is a cross-sectional view taken along line VC-VC in FIGS. It is sectional drawing which follows. FIG. 3 is a view similar to FIG. 2 of a reservoir tank formed at a position different from the formation position of the clutch master cylinder connection nipple shown in FIG. 2.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a view schematically showing a hydraulic operation device provided with an example of an embodiment of a reservoir tank according to the present invention.

  As shown in FIG. 1, the hydraulic operating device 1 of this example includes a hydraulic brake device 1A and a hydraulic clutch device 1B. The hydraulic brake device 1A is basically the same as a conventional two-system hydraulic brake device known in the art. That is, the hydraulic brake device 1 </ b> A includes a brake pedal 2, a booster 3, a tandem master cylinder 4, a reservoir tank 5, and a brake cylinder 6. The reservoir tank 5 is attached to a tandem master cylinder 4 fixed to the vehicle body. In this case, the reservoir tank 5 is attached to the vehicle body such that the longitudinal direction thereof is the vehicle front-rear direction (left-right direction in FIG. 1) or substantially the vehicle front-rear direction. Of course, the reservoir tank 5 does not have to be directly attached to the tandem master cylinder 4 and can be attached to the vehicle body away from the tandem master cylinder 4.

  When the driver depresses the brake pedal 2, the booster 3 operates to boost and output the pedal depression force with a predetermined servo ratio. The primary piston 4a of the tandem master cylinder 4 is operated by the output of the booster 3 to supply the hydraulic fluid in the primary hydraulic fluid chamber 4b to the brake cylinder 6 of one system, and the secondary piston 4c is operated to activate the secondary The hydraulic fluid in the hydraulic fluid chamber 4d is fed to the brake cylinder 6 of the other system. When the loss stroke of each brake system disappears, the tandem master cylinder 4 generates hydraulic pressure. The hydraulic pressure of the tandem master cylinder 4 is transmitted to each brake cylinder 6, each brake cylinder 6 generates a braking force, and each wheel 7 is braked.

  FIG. 2 is a view as seen from a direction orthogonal to the longitudinal direction and the left-right direction of the reservoir tank of this example. In the following description, the height of the bottom of each part refers to the height when the reservoir tank is attached to the vehicle body and the vehicle is leveled.

  As shown in FIG. 2, the reservoir tank 5 used in the hydraulic brake device 1 </ b> A of this example stores the hydraulic fluid to be supplied to the tandem master cylinder 4 and opens the container-like lower half 8. And an upper half 9 which is welded to the lower half 8 and closes the upper end opening of the lower half 8. The upper half 9 is provided with a hydraulic fluid inlet 10 and a cap 11 (shown by a two-dot chain line) for opening and closing the hydraulic fluid inlet 10. The lower half body 8 and the upper half body 9 are molded of resin, and the upper edge flange portion 8a of the lower half body 8 and the lower edge flange portion 9a of the upper half body 8 are superposed and heated, so that the liquid It is closely heat-sealed.

The lower half 8 of the reservoir tank 5 includes a base 12 (that is, a reservoir tank base) of the lower half 8 and a clutch connecting pipe part integrally molded with the base 12 of the lower half 8. And a master cylinder connecting nipple 13. As shown in FIG. 3, as in the conventional reservoir tank, the inside of the base body 12 of the lower half body 8 includes a liquid amount detection chamber 14, a primary brake hydraulic fluid reservoir chamber 15, a secondary brake hydraulic fluid reservoir chamber 16, and a clutch. A hydraulic fluid storage chamber 17 is provided. These chambers 14, 15, 16, and 17 are partitioned by a partition wall 18. However, the chambers 14, 15, 16, and 17 communicate with each other above the partition wall 18, and the hydraulic fluid injected from the hydraulic fluid inlet 10 flows into the chambers 14, 15, 16, and 17, respectively. Are stored.

  In the reservoir tank 5 of this example, the liquid amount detection chamber 14 is disposed at a substantially central position in the longitudinal direction of the base 12 (the vehicle longitudinal direction; the left-right direction in FIG. 3), and the secondary brake hydraulic fluid storage chamber 16 and the primary The brake hydraulic fluid storage chamber 15 is arranged adjacent to the fluid amount detection chamber 14 in the order of these on the vehicle rear side. Further, the clutch hydraulic fluid storage chamber 17 is positioned on the left side of the vehicle with respect to the fluid quantity detection chamber 14, the secondary brake hydraulic fluid storage chamber 16, and the primary brake hydraulic fluid storage chamber 15, and extends in the vehicle front-rear direction and the primary brake hydraulic fluid storage chamber. 15 is bent to the rear side of the vehicle and arranged in an L shape in plan view.

  As shown by a two-dot chain line in FIG. 3, a float 19 that moves up and down as the liquid level of the working fluid in the reservoir tank 5 moves up and down is provided in the liquid amount detection chamber 14. Also, as shown in FIGS. 1 and 2, the reed switch 20 is disposed on the lower surface of the base 12 so as to be positioned directly below the float 19. When the hydraulic fluid in the reservoir tank 5 decreases and the liquid level of the hydraulic fluid in the liquid amount detection chamber 14 (that is, the hydraulic fluid level in the reservoir tank 5) decreases, the liquid level decreases. The float 19 is also lowered. When the liquid level of the working fluid in the liquid amount detection chamber 14 reaches a reed switch operating position (not shown) slightly above the MIN position, a reed switch is provided by a magnet (not shown) provided below the float 19. 20 is turned on.

  As shown in FIGS. 3 and 4, a primary hydraulic fluid supply port 21 and a secondary hydraulic fluid supply port 22 are provided at the bottom of the primary brake hydraulic fluid storage chamber 15 and the bottom of the secondary brake hydraulic fluid storage chamber 16, respectively. ing. The primary hydraulic fluid supply port 21 is connected to the primary hydraulic fluid chamber 4 b of the tandem master cylinder 4, and the secondary hydraulic fluid supply port 22 is connected to the secondary hydraulic fluid chamber 4 d of the tandem master cylinder 4.

The clutch hydraulic fluid storage chamber 17 of the reservoir tank 5 is used for the hydraulic clutch device 1B. That is, the reservoir tank 5 is commonly used for the hydraulic brake device 1A and the hydraulic clutch device 1B. As shown in FIGS. 3 and 4, two clutch master cylinder connection nipple installation port portions 23, which are clutch connection pipe portion installation port portions, are provided on the outer wall 12 a of the base body 12 defining the clutch hydraulic fluid storage chamber 17. , 24 are provided. In this case, the clutch master cylinder connection nipple installation ports 23 and 24 are arranged at a distance from the movable range of the reservoir tank molding die and closer to the bottom of the clutch hydraulic fluid storage chamber 17. Has been.

The bottom of the clutch hydraulic fluid storage chamber 17 has a step 17a that is lower on the vehicle front side than on the vehicle rear side. One clutch master cylinder connection nipple installation port portion 23 is disposed at a position corresponding to a low bottom portion on the front side of the vehicle, and the other clutch master cylinder connection nipple installation port portion 24 is provided on the rear side of the vehicle. It is arrange | positioned in the position corresponding to the high bottom part of the side. That is, the heights of the installation positions of the clutch master cylinder connection nipple installation port portions 23 and 24 are different from each other. The installation positions of the clutch master cylinder connection nipple installation ports 23 and 24 are set in advance according to the vehicle on which the reservoir tank 5 is mounted.

These clutch master cylinder connection nipple installation port portions 23 and 24 are formed in the same shape with the same size. That is, each clutch master cylinder connecting nipple installation port portion 23, 24 in this example has an outer shape in which lower portions 23a, 24a are formed in an arc shape and upper portions 23b, 24b are formed in a rectangular shape, respectively. ) As a flat protrusion having a predetermined protrusion amount. In that case, each clutch master cylinder connection nipple installation port portion 23, 24 only functions as a mounting base for the clutch master cylinder connection nipple 13. The amount of protrusion is relatively small. Further, each clutch master cylinder connection nipple installation port portion 23, 24 has a through hole 2 for communicating the inside and outside of the clutch hydraulic fluid storage chamber 17 with each other.
3c, 24c.

  It is assumed that the vehicle on which the reservoir tank 5 of this example is mounted is a vehicle that is suitable for using one clutch master cylinder connection nipple installation port portion 23. Therefore, as shown in FIGS. 1 and 2, the clutch master cylinder connection nipple 13 is provided in the one clutch master cylinder connection nipple installation port 23. The clutch master cylinder connection nipple 13 is connected to the clutch master cylinder 25 of the hydraulic clutch device 1B through a pipe such as a hose (not shown), and the hydraulic fluid in the clutch hydraulic fluid storage chamber 17 is supplied to the clutch master cylinder 25. Is done.

  In order to form the clutch master cylinder connection nipple 13, an insert is inserted into the through hole 23 c of the clutch master cylinder connection nipple installation port portion 23, and the clutch master cylinder connection nipple installation port portion 23 A mold for forming the nipple 13 for connecting the master cylinder is disposed. At this time, the mold is simply set in the clutch master cylinder connection nipple installation port portion 23 that is positioned and provided in advance, so that the mold can be set and arranged relatively easily and accurately. Then, while injecting resin between these molds and the insert, and removing the mold and insert after the resin is cured, the clutch master cylinder connection nipple 13 is formed integrally with the base 12. As shown in FIG. 5B, the clutch master cylinder connection nipple 13 is formed with a communication hole 13a communicating with the through hole 23c. The through hole 23c and the communication hole 13a communicate the inside and the outside of the clutch hydraulic fluid storage chamber 17. Further, since the other clutch master cylinder connection nipple installation port portion 24 is not used in this vehicle, the through hole 24c of the clutch master cylinder connection nipple installation port portion 24 is closed as shown in FIG.

  If the vehicle on which the reservoir tank 5 is mounted is a vehicle in which it is suitable to use the other clutch master cylinder connection nipple installation port section 24, a clutch master cylinder connection nipple as shown in FIG. 13 is provided in the same manner as the other clutch master cylinder connecting nipple installation port 24. And although not shown in figure, the inside of the clutch hydraulic fluid storage chamber 17 and the exterior are connected by the through-hole 24c and the communicating hole 13a like the above. Further, the through hole 23c of one clutch master cylinder connection nipple installation port 23 is also closed in the same manner as described above.

  Formation of the clutch master cylinder connection nipple 13 and closure of the through hole of the clutch master cylinder connection nipple installation port portion not used are preferably performed before the upper half 9 is welded to the lower half 8. .

As described above, according to the reservoir tank 5 of this example, the base 12 in which the two clutch master cylinder connection nipple installation ports 23 and 24 are provided at different positions of the lower half 8 of the reservoir tank 5 is used. A tank 5 is formed. The clutch master cylinder connection nipple 13 is selectively provided in one of the two clutch master cylinder connection nipple installation ports 23 and 24 according to the vehicle type and vehicle specifications. Therefore, the common base 12 of the reservoir tank 5 can be used for a plurality of vehicles having different installation layouts of the tandem master cylinder 4 and the clutch master cylinder 25. Thereby, it is not necessary to use a reservoir tank molding die for each of the plurality of vehicles having different installation layouts, and the die cost can be effectively reduced. As a result, the cost of the reservoir tank 5 can be reduced. In particular, in a derivative vehicle in which a part of the basic vehicle is changed, the installation layout of the tandem master cylinder 4 and the clutch master cylinder 25 is similar, so that the cost of the reservoir tank 5 can be further effectively reduced.

Further, since the protrusion amount of the clutch master cylinder connection nipple installation port portions 23, 24 from the outer wall 12a of the base 12 is relatively small, when the reservoir tank 5 is mounted on the vehicle,
It can suppress that the clutch master cylinder connection nipple installation port part which is not used interferes with the other member of a vehicle. Thereby, even if the clutch master cylinder connection nipple installation port portion which is not used is provided, the degree of freedom of installation of the reservoir tank 5 can be increased.

Further, since the clutch master cylinder connection nipple installation ports 23 and 24 are provided in advance, the molds can be set and arranged relatively easily and accurately. As a result, the clutch master cylinder connection nipple 13 can be quickly formed.

  On the other hand, according to the hydraulic pressure operating device 1 using the reservoir tank 5 of this example, since the reservoir tank 5 using the base 12 common to vehicles having different layouts of vehicle members is used, the hydraulic pressure operating device 1 is It becomes possible to arrange efficiently.

Note that the present invention is not limited to the above-described embodiments. For example, in the example of the embodiment described above, two clutch master cylinder connection nipple installation ports are provided, but any number of clutch master cylinder connection nipple installation ports may be provided. it can. In the above-described example, the two clutch master cylinder connection nipple installation ports 23 and 24 are provided on the left side in the vehicle left-right direction. It can also be provided in any one or more directions in the front-rear and left-right directions of the vehicle. Furthermore, the reservoir tank of the present invention is not limited to the tandem master cylinder 4 but can be applied to a single master cylinder for braking. In short, the present invention is not limited to the above-described example, and various design changes can be made within the scope of the matters described in the claims.

The reservoir tank according to the present invention is used in a hydraulic pressure operating device such as a hydraulic brake device or a hydraulic clutch device using hydraulic pressure such as hydraulic pressure, and can be suitably used for a reservoir tank that stores hydraulic fluid. it can.
Further, the hydraulic actuator according to the present invention is suitably used for a hydraulic brake device that brakes a wheel using hydraulic fluid stored in a reservoir tank and a hydraulic clutch that performs clutch operation using the hydraulic fluid. can do.

DESCRIPTION OF SYMBOLS 1 ... Fluid pressure actuator, 1A ... Fluid pressure brake device, 1B ... Fluid pressure clutch device, 2 ... Brake pedal, 3 ... Booster device, 4 ... Tandem master cylinder, 5 ... Reservoir tank, 6 ... Brake cylinder, 8 ... Lower half, 9 ... Upper half, 10 ... Hydraulic fluid inlet, 12 ... Base, 13 ... Clutch master cylinder connection nipple, 13a ... Communication hole, 15 ... Primary brake hydraulic fluid reservoir, 16 ... Secondary brake hydraulic fluid Reservoir chamber, 17 ... Clutch hydraulic fluid reservoir chamber, 18 ... Partition wall, 21 ... Primary hydraulic fluid supply port, 22 ... Secondary hydraulic fluid supply port, 23, 24 ... Nipple installation port for clutch master cylinder connection, 23c, 24c ... Through hole, 25 ... Clutch master cylinder

Claims (4)

In a reservoir tank having at least a brake hydraulic fluid storage chamber and a clutch hydraulic fluid storage chamber for storing hydraulic fluid therein,
A base and a clutch connecting pipe provided integrally with the base;
A plurality of clutch connection pipe portion installation port portions are provided at different positions on the outer wall of the base body, each defining the clutch hydraulic fluid storage chamber,
Any one of the plurality of clutch connection pipe installation ports is provided with a clutch connection pipe for supplying the hydraulic fluid in the clutch hydraulic fluid storage chamber to the hydraulic clutch device, and all the other A reservoir tank characterized in that the clutch connection pipe portion installation port portion is closed.   2. The reservoir tank according to claim 1, wherein the plurality of clutch connection pipe portion installation port portions are provided on at least one outer wall in the front-rear, left-right direction of the base body in a vehicle-mounted state.   The reservoir tank according to claim 2, wherein at least some of the installation positions of the plurality of clutch connection pipe part installation port parts are set to different heights in a vehicle-mounted state. A reservoir tank that stores hydraulic fluid, a hydraulic brake device that performs a brake operation by supplying the hydraulic fluid in the reservoir tank, and a fluid that performs a clutch operation by supplying the hydraulic fluid in the reservoir tank A pressure clutch device,
4. The hydraulic pressure operating device according to claim 1, wherein the reservoir tank is the reservoir tank according to any one of claims 1 to 3.

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