JPH03224861A - Air pipe manifold for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle air piping manifold that incorporates compressed air piping and valves for a vehicle into a single body.

More specifically, the present invention relates to an air piping manifold suitable for a vehicle air brake system.

[Prior Art] In this type of air brake system for a vehicle, as shown in FIG. It is stored in tank 4. The compressed air in this wet tank 4 is supplied to the second check valves 5a and 6.
a, each front air tank 5 for brake
b and the rear air tank 6b.

Each air discharge port of tanks 5b and 6b is connected to each air introduction port of near relay valves 5c and 6c, and is connected to near relay valves 5C and 6 via brake valve 7.
Connected to the pilot air introduction port of C. Each air discharge port of the near relay valves 5c and 6C is connected to an air master 5d and 6d that pumps brake fluid to the wheel cylinder.
connected to.

A safety valve 8 and a pressure regulator 9 are connected to the wet tank 4, and when the tank pressure reaches a specified pressure, the pressure regulator 9 sends an unload signal air to put the air compressor 1 in an unload state, and at the same time, the air dryer with built-in purge tank The dryer 2 is purged with air from its built-in purge tank to regenerate the desiccant inside the dryer 2.

[Problem to be solved by the invention] However, since many valves are used in conventional air brake devices for vehicles, there are many parts related to air piping, which complicates the air piping and increases the number of piping man-hours. In addition, due to the large number of connection points, there is often a small amount of air leakage, which poses a problem of increasing air consumption.

Further, it is difficult to make the dimensions and shapes of related parts of conventional air piping the same for different table types, and it is necessary to prepare parts with different sizes and shapes for each table type.

The purpose of the present invention is to have a simple configuration with a small number of parts, require less piping work, and have extremely low air leakage.
To provide an air piping manifold for a vehicle in which piping parts can be shared even if the table type is different.

[Means for Solving the Problems] To achieve the above object, the present invention will be described based on FIG. 1. The vehicle air piping manifold 10 of the present invention includes a first check valve in a single body 10a 21, 2nd
Check valves 22, 23, pressure regulator 2
4 and a safety valve 25 are incorporated. An air passage 26 is provided inside this body 10a, and this air passage 26 includes an air discharge port of the first check valve 21, an air introduction port of the second check valve 22, 23, and an air introduction port of the pressure regulator 24. The port and the air introduction port of the safety valve 25 communicate with each other.

Furthermore, an air dryer 12 with a built-in purge tank for dehumidifying the compressed air of the air compressor 11 is provided on the outer surface of the body 10a.
The air introduction port 21a of the first check valve 21 for connection to the air discharge port 12a of the 5-second check valve 22.23 for connection to the air introduction port 14a, 15a of the brake air tank 14.15. Air exhaust port 22
a, 23a, and a second check valve 22.a for connecting to the air introduction port 16a of the brake valve 16.
23, the air pressure adjustment port 24a of the pressure regulator 24 for connecting to the air compressor 11 and the unloader valve lla, 12b of the air dryer 12 with a built-in purge tank, and the wet tank connected to the air flow path 26. An air exhaust port 26a for connecting to the air introduction port 13a of No. 13, an air exhaust port 24b of the pressure regulator 24 and an air exhaust port 25a of the safety valve 25, which communicate with the atmosphere, are provided.

The body 10a of the manifold 10 of the present invention is connected to the air exhaust ports 22a and 23a of the second check valve 22.23 to the air introduction port 14 of the brake air tank 14.15.
Brake tank 14.1 facing a, 15a
It is preferable to fix it to the outer surface of the pipe 5 because the number of piping parts can be further reduced.

6 - [Function] Since the check valves 21 to 23, the pressure regulator 24, and the safety valve 25, which are connected to each other via the air flow path 26, are incorporated into a single body 10a, simply attach this manifold 10 to the vehicle body. This greatly reduces the amount of piping work required for valves, and also reduces the number of air leaks.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in FIG. 1, the air piping manifold 10 includes an air compressor 11 and an air dryer 12 with a built-in purge tank.
, wet tank 13, brake tanks 14, 15,
Together with the brake valve 16, near relay valves 17 and 18, and air masters 19 and 20, an air brake device is configured. Brake tanks 14 and 15 are integrally formed.

Tank 14, near relay valve 17 and air master 19
is for the front brake, and the tank 15, near relay valve 18, and air master 20 are for the rear brake. Air masters 19 and 20 use compressed air from near relay valves 17 and 18, respectively, to generate high wave pressure in brake fluid and supply it to wheel cylinders of wheels (not shown), thereby performing a strong braking action.

The air piping manifold 10 is constructed by incorporating a first check valve 21, second check valves 22, 23, a pressure regulator 24, and a safety valve 25 into a single solid aluminum body 10a.

An air passage 26 is previously provided inside the body 10a by casting. The air flow path 26 includes an air discharge port of the first check valve 21 and a second check valve 22,23.
An air introduction port of the pressure regulator 24 and an air introduction port of the safety valve 25 are provided to communicate with each other.

Further, a first check valve 21 is provided on the outer surface of the body 10a.
air introduction port 21a, and second check valve 22.
23 air exhaust ports 22a, 22b, 23a, 23b
and air pressure adjustment port 2 of pressure regulator 24.
4a and air exhaust port) 24b, and safety valve 2
5 air discharge ports 25a and air discharge ports 26a and 26b communicating with the air passage 26 are provided.

The air introduction port 21a is connected to the air exhaust port 12a of the air dryer 12 with a built-in purge tank that dehumidifies the compressed air of the air compressor 11.
23a is connected to the air introduction ports 14a and 15a of the brake air tank 14.15, and is connected to the air exhaust port 22b.
, 23b is the air introduction port 16a of the brake valve 16
connected to. Further, the air pressure adjustment port 24a is connected to the air compressor 11 and the unloader valve lla, 12b of the air dryer 12 with a built-in purge tank, and the air discharge port 26a is connected to the air introduction port 1 of the wet tank 13.
3a, and the air exhaust port 26b is connected to an exhaust brake device 27 and a clutch booster device 28 in this example.

9 - Air piping manifold 10 as shown in FIGS.
The body 10a includes brake air tanks 14 and 15.
is fixed to the upper surface of the base 29 via a base 29. That is, the base 29 is welded to the top surface of the tank 14.15, and the base 29 is welded to the top surface of the tank 14.
A is fixed by three bolts 10c which are inserted into three through holes 10b and screwed into female threads 29a of the base 29.

The base 29 has two through holes 29 facing the air introduction ports 14a and 15a of the air tanks 14 and 15, respectively.
b and 29c are provided, and these through holes 29b, 29c
The lower end of the tank 14.15 is welded to the upper surface of the tank 14.15.

The first check valve 21 is formed within the body 10a,
A cavity 30 communicating with the air passage 26 is provided with a valve body 31 and a spring 32, and is sealed with a sealing bolt 33. A through hole 33a is provided in the center of the bolt 33.
A pipe fitting 34 is screwed onto a to form the air introduction port 21a described above. The valve body 31 closes the 10- through hole 33a of the bolt 33 by the elastic force of the spring 32 when compressed air does not flow in.

Second check valves 22 and 23 are similarly formed within the body 10a. That is, both of these valves 22 and 23 are provided with a valve body 36 and a spring 37 in a cavity 85 that communicates with the air flow path 26, and are sealed with a sealing bolt 38. The valve body 36 isolates the cavity 35 from the air passage 26 by the elastic force of the spring 37 when compressed air does not flow in. A pipe fitting 39 is screwed onto the side surface of the body 10a and forms the air exhaust ports 22b and 23b described above.

Further, the bottom surface of the body 10a has the above-mentioned through holes 29b and 2.
Air exhaust ports 22a and 23a are provided opposite to 9c. These air exhaust ports 22a, 22
b, 23a, and 23b communicate with the cavity 35.

The pressure regulator 24 is formed in the body 10a, and includes a cavity 40 (FIG. 3) that communicates with the air flow path 26, a piston valve 41 that slides in the cavity 40, and a spring 42, and is sealed by a screw body 43. be done. valve 41
The sliding surface of is in contact with either one of the U-packings 44 and 45 fixed to the inner peripheral surface of the cavity 401. U-Patzkin 4
A flow path 46 is formed between 4 and 45, and this flow path 46 communicates with a pipe fitting 47 that constitutes the air pressure adjustment port 24a described above. Further, the screw body 43 is provided with the aforementioned air exhaust port 24b passing through it. 48 is a bolt for adjusting the elastic force of the spring 42, and 49 is its lock nut.

The safety valve 25 is formed within the body 10a, and includes a valve body 51, a release pin 52, a spring 53, and its seat 54 in a cavity 50 communicating with the air flow path 26. The elastic force of the spring 53 is adjusted by an adjustment screw 55. 56 is a lock nut. Pipe fittings 57 and 58 screwed onto the side surface of the body 10a constitute the aforementioned air exhaust ports 26a and 26b, respectively. Air discharge port 26a of pipe fitting 57 and wet tank 13
A pipe 59 is connected between the air introduction ports 13a.

2 The air piping manifold 10 having such a configuration includes a base 2 welded to the upper surface of the brake air tanks 14 and 15.
Place the body 10a in the hole 10b through the bolt 10c.
After passing it through, it is firmly attached to the tanks 14 and 15 by screwing into the female thread 29a.

In this manifold 10, the air flow path 26 constitutes an inflow and outflow path of the wet tank 13 via the pipe 59, so that the check valves 21 to 23 and the pressure regulator 24 can be connected to each other in the shortest length without requiring extra piping. , communicates with the safety valve 25.

When compressed air from the purge tank built-in air dryer 12 flows into the first check valve 21, it flows into the wet tank 13 through the air flow path 26, port 26a and pipe 59.
can be stored in At the same time, the second check valves 22 and 23
Each valve body 36 opens the air introduction ports of the second check valves 22 and 23 against the elastic force of the spring 37. As a result, compressed air flows into the brake air tanks 14 and 3-15, and the compressed air is supplied to the brake valve 16. When the brake pedal 16b is depressed, pilot air passes through the brake valve 16 and flows into the near relay valves 17 and 18, and compressed air from the air tanks 14 and 15 passes through the near relay valves 17 and 18 and enters the air masters 19 and 20. is supplied to

When the pressure in the wet tank 13 reaches the specified pressure due to the inflow of compressed air from the air dryer 12 built into the purge tank, the valve body 41 of the pressure regulator 24 moves against the elastic force of the spring 42, as shown in FIG. The compressed air in the air passage 26 passes through the passage 46 and pushes down the unloader valve lla of the air compressor 11 and the unloader valve 12b of the air dryer 12 with a built-in purge tank, respectively. Furthermore, if the pressure in the wet tank 13 reaches the tank's allowable limit pressure, the valve body 51 of the safety valve 25 opens and releases air to the atmosphere.

In the above example, two brake air tanks, two air 4-relay valves, and two air masters were provided, thereby providing two second check valves, but it is also possible to provide one each.

Further, although an example has been shown in which an exhaust brake device and a clutch booster are connected to the air exhaust port 26b of the manifold, other vehicle air equipment may be connected.

[Effects of the Invention] As described above, according to the present invention, the first check valve, the second check valve, the pressure regulator, and the pressure regulator are connected to each other via the air flow path in the body of a single air piping manifold. Because it incorporates a safety valve,
By simply attaching this manifold to the vehicle body, the number of piping steps required for valves can be significantly reduced, and the number of air leakage points can also be reduced. As a result, the amount of compressed air consumed is reduced, and the load on the engine caused by driving the air compressor can be reduced.

Moreover, the manifold of the present invention can be used in common even if the table type is different, and the economical effect of mass production is large.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an air brake device including an air piping manifold according to an embodiment of the present invention. FIG. 2 is a sectional view taken along the line nn in FIG. 4 showing the configuration of the air piping manifold. FIG. 3 is a sectional view taken along the line mm in FIG. 2 showing the operating status of the pressure regulator and the second check valve when the air pressure in the air piping manifold exceeds the specified pressure. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2 showing the second check valve of the air piping manifold. FIG. 5 is a plan view showing how the tank is attached to the air piping manifold. FIG. 6 is a diagram corresponding to FIG. 1 of a conventional air brake device. 10: Air piping manifold, 10a: Manifold body 11: Air compressor, 11a: Unloader valve, 6 12: Air dryer with built-in purge tank, 12b: Unloader valve, 13: Wet tank, 14. 15 Ni-brake air tank, 16: Brake valve , 21: First check valve, 22.23: Second check valve, 24: Pressure regulator, 25: Safety valve, 26: Air flow path, 29: Base. 7-

Claims (1)

[Claims] 1) A first check valve, a second check valve, a pressure regulator, and a safety valve are incorporated into a single body, and the air of the first check valve is supplied to an air passage provided inside the body. A discharge port, an air introduction port of the second check valve, an air introduction port of the pressure regulator, and an air introduction port of the safety valve are in communication with each other, and the air of an air dryer for dehumidifying the compressed air of the air compressor is provided on the outer surface of the body. an air introduction port of the first check valve for connection to the discharge port; an air discharge port of the second check valve for connection to each air introduction port of the brake air tank and the brake valve; an air pressure adjustment port of the pressure regulator to be connected to each unloader valve of the air dryer; an air discharge port that communicates with the air flow path and connects to the air introduction port of the wet tank; and an air pressure regulator port that communicates with the atmosphere. An air piping manifold for a vehicle in which an air exhaust port of a regulator and an air exhaust port of the safety valve are arranged. 2) The air piping manifold for a vehicle according to claim 1, wherein the body is fixed to the outer surface of the brake air tank with the air discharge port of the second check valve facing the air introduction port of the brake air tank.