JPH0979476A - Brake pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent members such as an actuator from becoming large by providing a filter arranged to the actuator and the like, into a brake pipe. SOLUTION: A filer 6 presents an almost cylindrical from being composed of a support member 7 and a mesh filter 8, the support member 7 presents a substantially cylindrical form being composed of an opening end part 7a at the opening end side, a closed end part 7b at the closed end side, and the connecting part 7c, of a brake pipe 5, while the outer peripheral surface of the closing end part 7b presents a taper form forming the diameter expanded to the opening end side of the brake pipe 5. The mesh filter 8 is installed to the support member 7 to form the outer peripheral side surface of the filter 6 presenting substantially a cylindrical form. The filter 6 is inserted from the closed end part 7b side to the inside of the brake pipe 5, and its position is maintained in the brake pipe 5, by engaging and pressing in the outer periphery of the opening end part 7a and the inner circumference of the brake pipe 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake pipe used as a brake fluid transmission means used in a vehicle hydraulic brake system.

[0002]

2. Description of the Related Art A conventional brake pipe is supplied from a master cylinder in a hydraulic brake system for a vehicle, for example, one end of which is connected to a master cylinder and the other end of which is connected to an actuator serving as brake hydraulic pressure control valve means. The brake fluid that is transmitted to the actuator, or the brake fluid that flows out from the actuator is only transmitted to the master cylinder.

Regarding communication between a master cylinder of a hydraulic brake system for a vehicle and an actuator, a filter portion is provided to prevent foreign matter from flowing into the actuator, and an actuator with which a brake pipe is normally engaged is usually provided. The filter portion is arranged in the vicinity of the port in the hydraulic pressure passage communicating with the port arranged in.

As an actuator having a filter portion arranged therein, for example, an actuator disclosed in Japanese Utility Model Laid-Open No. 3-125662 is known.

[0005]

However, in the above-mentioned actuator, since the filter portion is arranged in the hydraulic pressure passage, the filter portion and the filter portion are arranged so that the filter portion does not become a resistance to the flow of the brake fluid. It is necessary to set a large hydraulic pressure path in which the actuator is arranged, which causes a problem that the actuator itself becomes large.

The present invention has its technical problem to prevent the members such as the actuator from increasing in size by disposing the filter portion provided in the actuator and the like inside the brake pipe. is there.

[0007]

In order to solve the above technical problems, a brake pipe, which is a means for transmitting brake fluid used in a vehicle brake system, has a filter portion formed of at least a filter material therein. The brake pipe is characterized by.

[0008] Preferably, the brake pipe is characterized in that it has a shape extending in the axial direction of the brake pipe.

Preferably, the filter portion is a brake pipe characterized in that the filter material is attached to a supporting member having a shape extending in the axial direction of the brake pipe.

[0010] Preferably, the filter portion is a brake pipe which is engaged with the brake pipe.

[0011] Preferably, the support member is composed of an open end portion, a closed end portion facing the open end portion, and a connecting portion connecting the open end portion and the closed end portion, and has a substantially cylindrical shape. The brake pipe is preferably characterized in that the filter material is attached to the substantially cylindrical support member so as to form at least a side surface portion of the filter portion facing the inner peripheral surface of the brake pipe.

Preferably, the outer peripheral surface of the closed end of the support member has a taper shape whose diameter is enlarged toward the open end of the support member.

Preferably, at least one of the open end, the closed end and the connecting portion of the support member engages with the brake pipe.

[0014] Preferably, the filter material is a mesh pipe, and a brake pipe is desirable.

The brake pipe according to any one of claims 1 to 3 is
The brake fluid flowing inside the brake pipe passes through the filter material of the filter section, so that the foreign matter contained in the brake fluid is removed.

According to the brake pipe of the fourth aspect, in addition to the action of the brake pipe of the third aspect, the filter portion engages with the brake pipe and the filter portion holds its position.

According to a fifth aspect of the present invention, in the brake pipe, the brake fluid flowing inside the brake pipe flows from the closed end portion side to the outer peripheral side surface side of the filter portion and passes through the filter material from the outer peripheral side surface side of the filter portion. Flowing into the interior of the section,
The foreign matter contained in the brake fluid is removed by flowing out from the opening end and passing through the filter section. Alternatively,
The brake fluid flowing through the inside of the brake pipe flows into the inside of the filter part from the opening end, passes through the filter material, flows out to the outer peripheral side surface of the filter part, and flows along the outer peripheral surface of the closed end part. By passing through the filter portion, foreign matter contained in the brake fluid is removed.

In the brake pipe according to a sixth aspect, in addition to the action of the brake pipe according to the fifth aspect, the brake fluid flowing inside the brake pipe extends along the outer peripheral surface of the filter portion along the tapered outer peripheral surface of the closed end of the support member. To the side or to the front of the closed end of the filter section.

In the brake pipe according to claim 7, in addition to the action of the brake pipe according to claim 5 or 6, at least one of the open end, the closed end and the connecting part of the support member is the brake pipe. And the filter portion holds its position in the brake pipe.

The brake pipe according to claim 8 is the brake pipe according to claim 1
In addition to the action of the brake pipe according to any one of claims 7 to 11, the brake fluid flowing inside the brake pipe,
By passing through the mesh filter of the filter section,
Foreign matter contained in the brake fluid is removed.

[0021]

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

(Embodiment 1) As shown in FIG. 1, reference numeral 1 denotes a body of an actuator which is hydraulic pressure control valve means used in a vehicle brake system, and a body 1 is provided with a hydraulic pressure path 2 and a port 3. Has been formed. The hydraulic passage 2 communicates with the port 3 via the seat 4.

Reference numeral 5 denotes a brake pipe, which has an engaging end portion 5a formed on the opening side, and a filter portion 6 is provided inside the brake pipe 5.

FIG. 2 is a sectional view taken along line AA of the filter section 6 of FIG. 1, and FIG. 3 is a perspective view of the filter section 6 of FIG. As shown in FIGS. 1, 2 and 3, the filter unit 6
Is made up of a support member 7 and a mesh filter 8 and has a substantially cylindrical shape with one end open and the other end closed. The support member 7 includes an opening end 7a on the opening side of the brake pipe 5 and a closing end 7 facing the opening end 7a.
b and a connecting portion 7c that connects the open end portion 7a and the closed end portion 7b, and has a substantially cylindrical shape.

Further, the outer peripheral surface of the closed end portion 7b has an opening end portion 7b.
It has a tapered shape in which the diameter is enlarged toward a. The mesh filter 8 is attached to the support member 7 so as to form a side surface portion of the filter portion 6 facing the inner peripheral surface of the brake pipe 5, that is, an inner and outer peripheral surface of the substantially cylindrical filter portion 6. The filter portion 6 is inserted into the brake pipe 5 from the closed end portion 7b side, the opening end portion 7a is press-fitted into the opening portion of the brake pipe 5, and the outer periphery of the opening end portion 7a and the inner periphery of the brake pipe 5 are separated from each other. By engaging, the filter part 6 engages with the brake pipe 5 and holds its position in the brake pipe 5.

In FIG. 1, the brake pipe 5 provided with the filter portion 6 is inserted into the port 3 and the seat 4 is inserted.
The engaging end portion 5a of the brake pipe 5 is brought into contact with, and the nut 9 fitted in the brake pipe 5 is screwed into the port 3, so that the engaging end portion 5a of the brake pipe 5 is connected to the seat 4 and the nut 9. And the brake pipe 5 is fixed to the actuator body. A filter portion 6 is similarly arranged on the other end side of the brake pipe 5 (not shown), and the other end side of the brake pipe 5 is connected to a port (not shown) formed in the master cylinder, and the master cylinder and the actuator are connected. And are communicated with each other through the brake pipe 5.

The brake fluid flowing from the master cylinder through the brake pipe 5 toward the actuator is
The filter portion flows along the tapered outer peripheral surface of the closed end portion 7b of the support member 7 toward the outer peripheral side of the filter portion 6, passes through the mesh filter 8 forming the side surface portion of the filter portion 6 from the outer periphery of the filter portion 6, and the filter portion 6, the brake fluid passes through the mesh filter 8 to remove foreign matter contained in the brake fluid, and the brake fluid is released into the open end portion 7a.
To flow through the filter portion 6 and into the hydraulic pressure passage 2 in the actuator body 1.

As described above, according to the brake pipe of the present embodiment, since the filter portion provided in the actuator or the like is provided inside the brake pipe 5, the filter portion 6 is provided in the actuator or the like. It is not necessary, and therefore, it is possible to prevent the members such as the actuator from increasing in size.

Further, since the brake pipe 5 is usually extremely thin, the effective use area of the filter portion 6 tends to be small, but the filter portion 6 has a shape extending in the axial direction of the brake pipe 5. Since it has a substantially cylindrical shape and the mesh filter 8 is attached so as to form the side surface of the substantially cylindrical filter portion 6,
It is possible to secure a sufficient effective use area, and therefore it is possible to sufficiently remove the foreign matter in the brake fluid.

Further, the filter unit 6 is a mesh filter 8
The shape and strength of the mesh filter 8 are ensured by being supported by the support member 7, and therefore the support member 7 prevents the mesh filter 8 from being deformed by the brake fluid pressure. I'm out.

Further, since the filter portion 6 has the closed end portion 7b, the brake fluid can be guided toward the mesh filter 8 forming the side surface portion of the filter portion 6 extending in the axial direction of the brake pipe 5.

Further, since the outer periphery of the closed end portion 7b of the support member 7 has a tapered shape, the brake fluid is more likely to flow to the outer peripheral side of the filter portion 6.

Further, since the open end 7a of the support member 7 is press-fitted into the inner peripheral portion of the brake pipe 5, the filter portion 6 can hold its position in the brake pipe 5.

In the present embodiment, the filter portion 6 using the mesh filter 8 is arranged. However, by using a cylindrical filter instead of the mesh filter 8 and incorporating it into the support member 7, You may use the filter part which made the side surface part of the part 6 form a cylindrical filter at least, Moreover, the closed end part 7b of the support member 7 was changed into an open end part, and the opening part of these open end parts is changed. Alternatively, a filter portion to which the mesh filter 8 is attached may be used, and a filter portion only including a filter material without the support member 7 may be used. For example, a cylindrical filter may be provided inside the brake pipe 5.

Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, but includes various embodiments according to the principle of the present invention.

(Embodiment 2) This embodiment is the same as Embodiment 1 except for the filter section 6, and its explanation is omitted.

FIG. 4 is a perspective view of the filter portion 6 of this embodiment, and FIG. 5 is a sectional view of the filter portion 6. As shown in FIGS. 4 and 5, the filter portion 6 is composed of a support member 7 and a mesh filter 8 and has a substantially conical shape. The support member 7 is composed of an opening end 7a on the opening end side of the brake pipe 5 and a substantially V-shaped connecting portion 7d, and has a substantially conical shape. The mesh filter 8 is attached to the support member 7 so as to form an outer peripheral side surface portion of the filter portion 6 having a substantially conical shape. The filter part 6 is inserted into the brake pipe 5 from the side of the substantially dog-legged connecting part 7d, the opening end 7a is press-fitted into the opening of the brake pipe 5, and the outer periphery of the opening end 7a and the brake pipe 5 are inserted. The filter portion 6 is engaged with the inner periphery of the brake pipe 5 to hold the position in the brake pipe 5.

The operation of the present embodiment will be described with reference to FIGS. 1, 4 and 5. The brake fluid flowing from the master cylinder to the actuator in the brake pipe 5 flows to the outer peripheral side of the filter unit 6 and
From the outer periphery of the brake fluid to the inside of the filter portion 6 through the mesh filter 8 forming the side surface portion of the filter portion 6, and the brake fluid passes through the mesh filter 8 to remove foreign matter contained in the brake fluid. The liquid flows out from the open end portion 7 a, passes through the filter portion 6, and flows into the hydraulic pressure passage 2 in the actuator body 1.

As described above, according to the brake pipe of the present embodiment, since the filter portion provided in the actuator or the like is provided inside the brake pipe 5, the filter portion 6 is provided in the actuator or the like. It is not necessary, and therefore, it is possible to prevent the members such as the actuator from increasing in size.

Further, since the brake pipe 5 is usually extremely thin, the effective use area of the filter portion 6 tends to be small, but the filter portion 6 has a shape extending in the axial direction of the brake pipe 5. Since the mesh filter 8 has a substantially conical shape and is attached so as to form the side surface of the substantially conical filter portion 6,
It is possible to secure a sufficient effective use area, and therefore it is possible to sufficiently remove foreign matters in the brake fluid.

Further, the filter unit 6 is a mesh filter 8
And the support member 7, the shape and strength of the mesh filter 8 are ensured by being supported by the support member 7, and therefore the support member 7 prevents the mesh filter 8 from being deformed by the brake fluid pressure. Is being prevented.

Further, since the open end 7a of the support member 7 is press-fitted into the inner peripheral portion of the brake pipe 5, the filter portion 6 can hold its position in the brake pipe 5.

In the present embodiment, the filter portion 6 using the mesh filter 8 is arranged. However, a conical filter is used instead of the mesh filter 8 and the filter is incorporated into the inside of the support member 7, whereby A filter portion in which at least a side surface portion of the portion 6 is formed by a conical filter may be used, or a filter portion only using a filter material without the support member 7 may be used. For example, a conical filter may be used as the brake pipe 5. It may be installed inside the.

Although the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-mentioned embodiments, but includes various embodiments according to the principle of the present invention.

[0045]

As described above, according to the invention of claim 1, since the filter portion is arranged inside the brake pipe, it is not necessary to provide the actuator portion with the filter portion. It is possible to prevent the member from becoming large.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the brake pipe is usually extremely thin, the effective use area of the filter portion tends to be small, but the filter portion is small. Since the shape of the brake pipe extends in the axial direction, it is possible to secure a sufficient effective use area in the axial direction, and thus it is possible to sufficiently remove the foreign matter in the brake fluid.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, since the filter portion is composed of the filter material and the supporting member, the shape and strength of the filter material depends on the supporting member. It is ensured by being supported, and therefore the support member prevents the filter material from being deformed by the brake fluid pressure.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, since the filter portion is engaged with the brake pipe, the filter portion can hold its position in the brake pipe. is there.

According to the invention of claim 5, in addition to the effect of the invention of claim 3, the filter portion has a substantially cylindrical shape or a substantially cylindrical shape having a closed end portion, and at least a side surface portion of the filter portion extending in the axial direction. It is possible to guide the brake fluid towards the filter material forming the.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, the outer periphery of the closed end of the support member is tapered, so that the brake fluid is more on the outer peripheral side of the filter portion, or It is easy to flow to the front of the closed end.

According to the invention of claim 7, in addition to the effect of the invention of claim 5 or 6, at least one of the open end, the closed end and the connecting part of the support member is engaged with the brake pipe. Because of this, the filter part can hold its position in the brake pipe.

According to the eighth aspect of the present invention, in addition to the effects of the first to seventh aspects of the invention, a mesh filter is used as the filter material, so that a better form of the filter material is shown.

[Brief description of drawings]

FIG. 1 is a sectional view of a brake pipe according to a first embodiment.

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

FIG. 3 is a perspective view of the filter unit 6 of FIG.

FIG. 4 is a perspective view of a filter unit 6 according to a second embodiment.

5 is a cross-sectional view of the filter unit 6 of FIG.

[Explanation of symbols]

5 Brake Pipe 6 Filter Part 7 Supporting Member 7a Opening End 7b Closing End 7c Connecting Part 7d Almost Square Connecting Part 8 Mesh Filter

Claims (8)

[Claims] 1. A brake pipe, which is a means for transmitting brake fluid used in a vehicle brake device, having a filter portion formed of at least a filter material therein. 2. The brake pipe according to claim 1, wherein the filter portion has a shape extending in an axial direction of the brake pipe. 3. The brake pipe according to claim 2, wherein the filter portion is formed by attaching the filter material to a support member having a shape extending in the axial direction of the brake pipe. 4. The brake pipe according to claim 1, wherein the filter portion engages with the brake pipe. 5. The supporting member has a substantially cylindrical shape and is composed of an open end, a closed end facing the open end, and a connecting portion connecting the open end and the closed end. The brake pipe according to claim 3, wherein the filter material is attached to the substantially cylindrical support member so as to form at least a side surface portion of the filter portion that faces an inner peripheral surface of the brake pipe. . 6. The brake pipe according to claim 5, wherein the outer peripheral surface of the closed end of the support member has a tapered shape whose diameter is enlarged toward the open end of the support member. 7. The brake pipe according to claim 5, wherein at least one of an open end, a closed end, and a connecting portion of the support member engages with the brake pipe. Brake pipe. 8. The brake pipe according to claim 1, wherein the filter material is a mesh filter.