JP2001063548A - Reservoir - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sealing performance of an abutting part by constituting a reservoir formed by blocking up a tunnel-like groove extending to a storage chamber from an intermediate part by a cover-like member via a seal member by forming a communicating passage in a reservoir body part. SOLUTION: The reservoir body part 11 is connected to one end intermediate part 15, and the communicating passage 16 is arranged so that the other end 16b extends toward the vehicle rear side. When introducing brake fluid to the storage chamber 12, a reservoir cap 18 is removed from the reservoir body part 11, and the brake fluid is introduced to the storage chamber 12 from a lubricating operating part 13 and a communicating hole 14. As the brake fluid is introduced to the storage chamber 12, air of an atmospheric part 12b is exhausted outside a master cylinder reservoir from the intermediate part 15, in its turn, the lubricating opening part 13 passing through the communicating passage 16 from an opening part 16b. After introducing the brake fluid by a prescribed quantity, the reservoir cap 18 is installed in the reservoir body part 11. Thus, the communicating passage can be liquidtightly constituted except for the opening part so as not to impair sealing performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a reservoir for storing a required amount of hydraulic fluid, and more particularly to a master cylinder reservoir for storing a required amount of hydraulic fluid for hydraulic equipment mounted on a vehicle such as an automobile. .

[0002]

2. Description of the Related Art A conventional reservoir is disclosed in, for example,
As disclosed in Japanese Patent No. 175539, a reservoir body having a storage chamber having a working fluid portion in which a working fluid is present and an atmosphere portion in which the atmosphere is present, and a storage chamber formed in the reservoir body to store the working fluid A lubrication opening for injecting oil into the reservoir, a partition disposed in the reservoir body to partition the storage chamber and the lubrication opening, and forming an intermediate portion between the lubrication opening and the storage chamber; A communication hole that is provided and communicates between the intermediate portion and the storage chamber; a first cap member that is provided at the lubrication opening and has a breathing path that communicates the intermediate portion and the reservoir body; A second cap member which is provided and interrupts communication between the intermediate portion and the storage chamber through the communication hole, and one end opening of which is connected to the intermediate portion and the other end opening is arranged in the atmosphere portion and To allow communication between the unit and the storage chamber It was those and a road.

[0003] In this conventional reservoir, even when the working fluid is inclined in the storage chamber, the opening of the other end of the communication passage can be located in the atmosphere, so that the working fluid is supplied to the other end of the communication passage. It does not enter the communication path from the opening side, and does not flow out to the intermediate part, the respiratory path, and eventually to the outside of the reservoir body.

[0004]

In such a conventional reservoir, the communicating passage is formed by a resin-made reservoir main body and a tunnel-shaped groove extending from the intermediate portion to the storage chamber. And is closed by a lid-like member. However, dimensional variations are large due to sinks and undulations during molding of the reservoir body and the lid-like member,
Since the sealing property of the contact portion between the tunnel-like groove and the lid-like member is not sufficient, there is a problem that the function of the communication path provided for preventing the hydraulic fluid from flowing out is impaired.

An object of the present invention is to provide a reservoir in which the sealing property of the contact portion between the tunnel-like groove and the lid-like member is ensured, and the function of preventing the hydraulic fluid from flowing out of the communication passage is sufficiently exhibited.
It is a technical issue.

[0006]

Means for Solving the Problems To solve the above-mentioned technical problems, a hydraulic fluid is stored and a hydraulic fluid portion in a normal state and a hydraulic fluid portion and an atmosphere portion in which the atmospheric pressure exists in the normal state. A reservoir body provided with a storage chamber consisting of: an oiling opening formed in the reservoir body for injecting hydraulic fluid into the storage chamber; and a reservoir provided in the reservoir body. A partition that partitions the oiling opening and forms an intermediate portion between the oiling opening and the storage chamber; and a communication hole that is provided in the partition and communicates the intermediate portion and the storage chamber. And a breathing path disposed in the lubrication opening and communicating the intermediate portion and the outside of the reservoir body, and interrupting communication between the intermediate portion and the storage chamber through the communication hole. Cap member and opening One end of the reservoir is connected to the intermediate portion, and the other end of the opening is disposed in the atmosphere portion, and the reservoir has a communication passage that communicates with the intermediate portion and the storage chamber. A tunnel formed in the reservoir body and extending from the intermediate portion to the storage chamber is closed by a lid member via a seal member to form a reservoir.

In the invention according to the first aspect, the tunnel-shaped groove formed in the reservoir main body and extending from the intermediate portion to the storage chamber is closed by the lid-like member to form a communication passage. Moreover, since the tunnel-like groove and the lid-like member are brought into contact with each other via the seal member, the communication path is liquid-tight except for the opening. Furthermore, since the abutment is performed via the seal member, the sealability is not impaired even if the tunnel-like groove and the lid-like member have sinks or undulations during molding.

Next, it is preferable that the partition is formed integrally with the lid-like member.

In the invention according to the second aspect, the partition part and the lid-like member, which are formed as separate members, are integrally formed and assembled to the reservoir body, and the communication passage and the partition part can be formed simultaneously. The assemblability is improved and the number of parts is reduced.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments.

FIG. 1 is a side view of a master cylinder reservoir 10 according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along the line CC in FIG. 2, and FIG. 5 is a view showing a state where the cap member is removed in FIG. As shown in FIGS. 1, 2, 3, and 5, the master cylinder reservoir 10 is disposed above a well-known master cylinder (not shown).

The master cylinder reservoir 10 has a storage chamber 12 for storing brake fluid inside a reservoir body 11, and is located at the upper front side of the master cylinder reservoir 10 (FIG. 3).
An oiling opening 13 for injecting brake fluid into the storage chamber 12 is provided in the middle and upper right).

The storage chamber 12 is subdivided by a plurality of partition walls, and each subdivided chamber is connected to each other by a communication hole provided in each partition wall. The storage chamber 12 is communicated with a master cylinder (not shown) through a communication hole 19 provided in a lower part of the reservoir body 11.

The reservoir main body 11 partitions the storage chamber 12 and the lubrication opening 13 in the reservoir main body.
A partition 14 that forms an intermediate portion 15 is formed between the storage chamber 12 and the lubrication opening 13. The partition 14 has a communication hole 14 a for communicating the intermediate part 15 with the storage chamber 12.

Further, one end 1 is provided on the reservoir body 11.
6a (FIG. 5) is connected to the intermediate portion 15 and the other end 16
A communication path 16 is provided in which b extends toward the vehicle rear side (left side in FIG. 3).

A predetermined amount of brake fluid 17 is stored in the storage chamber 12, and the storage chamber 12 is located under the storage chamber 12 in the normal state shown in FIG. It is divided into a portion 12a and an atmosphere portion 12b on the upper side of the storage chamber 12 where the atmosphere exists. The two-dot chain line in FIG. 3 indicates the level of the brake fluid 17. That is, the opening 16b of the communication passage 16 is disposed in the atmosphere portion 12b.

The master cylinder reservoir 10 has a reservoir cap 18 at the lubrication opening 13. The reservoir cap 18 integrally has a first cap member 181 fitted in the lubrication opening 13 and a second cap member 182 fitted in the communication hole 14a of the partition part 14.
The first cap member 181 has a first breathing path 181a (FIG. 7), and the second cap member 182 has a second breathing path 182.
a (FIG. 7) is formed, and the intermediate portion 15 communicates with the outside of the reservoir body 11 through the breathing passages 181a and 182a. The second cap member 182 is provided with a seal member 182b.
2 and the partition part 14 are engaged in a liquid-tight manner.

When the brake fluid 17 is introduced into the storage chamber 12, the reservoir cap 18 is removed from the reservoir body 11, and the reservoir cap 18 is removed from the lubrication opening 13 and the communication hole 14.
2 is introduced.

On the other hand, as the brake fluid 17 is introduced into the storage chamber 12, the storage chamber 12,
Is discharged from the master cylinder reservoir 10 from the opening 16b through the communication passage 16 to the intermediate portion 15 and further to the lubrication opening 13.

After a predetermined amount of the brake fluid 17 has been introduced, the reservoir cap 18 is attached to the reservoir body 11.

FIG. 4 shows the master cylinder reservoir 1 of FIG.
FIG. 5 is a diagram showing a state in which the level of the brake fluid 17 is inclined at 0. For example, when the brake is actuated when the vehicle is moving forward, the brake fluid 17 in the master cylinder reservoir 10 is biased toward the front side of the vehicle by the inertia thereof, and thus to the front of the master cylinder reservoir 10 (to the right in FIG. 3). become. That is, the level of the brake fluid 17 is inclined.

However, the communication hole 14a of the partition 14
Is the reservoir cap 18, that is, the second cap member 1
82, the brake fluid 17 flows through the communication hole 14a to the intermediate portion 15, the respiration path 1
81a, 182a and, consequently, master cylinder reservoir 1
It cannot flow out of zero.

Further, even if the brake fluid 17 is inclined, the opening 16b of the communication passage 16 is located on the rear side of the vehicle, that is, on the rear side of the master cylinder reservoir 10 and in the atmosphere portion 12b. Penetrates into the communication passage 16 from the opening 16b side of the communication passage 16, and the intermediate portion 1
5. It cannot flow out of the breathing paths 181a, 182a, and thus out of the master cylinder reservoir 10.

Even if the brake fluid 17 is biased forward (to the right in FIG. 3) of the master cylinder reservoir 10 when the vehicle is tilted, the brake fluid 17 is produced by the same effect as described above. It does not flow out of the master cylinder reservoir 10.

Here, how the communication path 16 is formed will be described.

As shown in FIGS. 2, 6, and 7, the reservoir main body 11 is formed with a tunnel-like groove 11a having side surfaces 11b and 11c. This tunnel-like groove 11a
The lid member 21 shown in FIGS.
Is inserted, and the tunnel-like groove 11a is closed by the flat portion 21a of the lid-like member 21 to form the communication passage 16. At this time, the sealing member 22 attached to the flat portion 21b of the lid member 21 is brought into contact with the step 11f between the side surface portion 11b and the side surface portion 11c of the tunnel-shaped groove 11a, and the lid member 2
1 and the side portion 11c of the tunnel-like groove 11a.
And maintain liquid tightness.

In the present embodiment, the partitioning portion 14 that partitions the storage chamber 12 from the lubrication opening 13 and forms an intermediate portion 15 between the storage chamber 12 and the lubrication opening 13 is provided.
It is formed integrally with the lid member 21. This allows
The number of parts is reduced and the number of assembling steps is reduced.

[0028]

According to the first aspect of the present invention, since the tunnel-like groove and the lid-like member are brought into contact with each other via the sealing member, the communication path is formed liquid-tight except for the opening. Furthermore, since the abutment is performed via the seal member, the sealability is not impaired even if the tunnel-like groove and the lid-like member have sinks or undulations during molding.

In the invention according to claim 2, in addition to the effect of claim 1, in addition to the partition part and the lid-like member which are formed as separate members, they are integrally formed and assembled to the reservoir body.
Since the communication passage and the partition can be formed at the same time, the assemblability is improved and the number of parts is reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a master cylinder reservoir according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line CC of FIG. 2;

FIG. 4 is a diagram showing a state in which the level of the brake fluid in the master cylinder reservoir in FIG. 3 is inclined.

FIG. 5 is a view showing a state where a cap member is removed in FIG. 3;

FIG. 6 is a cross-sectional view taken along the line DD of FIG. 5, showing a cross section of the communication passage.

FIG. 7 is a sectional view taken along the line BB of FIG. 2;

FIG. 8 is a plan view and a side view of a lid member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Master cylinder reservoir (reservoir) 11 Reservoir main body 11a Tunnel-shaped groove 12 Storage chamber 12a Hydraulic fluid part 12b Atmospheric part 13 Lubrication opening 14 Partitioning part 14a Communication hole 15 Middle part 16 Communication path 16a Opening 16b Opening 18 Cap member 21 lid member 22 seal member

Claims (2)

[Claims] 1. A reservoir body for storing a hydraulic fluid and having a storage chamber including a hydraulic fluid portion in a normal state where the hydraulic fluid is present and an air portion where the air is present, and injects the hydraulic fluid into the reservoir. An oiling opening formed in the reservoir main body, and an oil supply opening disposed in the reservoir main body to partition the storage chamber and the oiling opening, and to be intermediate between the storage chamber and the oiling opening. A partition portion forming a portion, a communication hole provided in the partition portion to communicate the intermediate portion and the storage chamber, and a communication hole provided in the lubrication opening portion, and the outside of the intermediate portion and the reservoir body portion. A cap member that has a breathing path that communicates with the cap member and that blocks communication between the intermediate portion and the storage chamber through the communication hole, one end of the opening is connected to the intermediate portion, and the other of the opening The end is the atmospheric part And a communication passage disposed in the reservoir and communicating with the intermediate portion and the storage chamber, wherein the communication passage is formed in the reservoir body and extends from the intermediate portion to the storage chamber. A reservoir, wherein the groove is formed so as to be closed by a lid-like member via a sealing member. 2. The reservoir according to claim 1, wherein the partition portion is formed integrally with the lid-like member.