JP2001347942A - Suction device and sucking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide suction device facilitating oil removing works in removing air from a hydraulic system such as a brake of an automobile or oil removing works for a lubricating system such as a transmission and an engine. SOLUTION: This suction device A is provided with a storage tank 1. The storage tank 1 is provided with a suction control body 2 threadedly engaged with its top part and a suction pipe 13 having a check valve connected to its side upper part. The storage tank 1 is also provided with a volume gage. The suction control body 2 is provided with a suction passage 21 communicated with an air traveling passage 24 in its screw hole 20 top part. A ventilation passage 22 communicating with a pressure gage is provided adjacent to the suction passage 21. The suction control body 2 is provided with the air traveling passage 24 penetrating through the side faces. The upper end of the suction passage 21 is opened in the bottom of a conical hole 241 of the air traveling passage 24. The air traveling passage 24 has a connector 4 fitted thereto. The connector 4 is provided with an opening/closing lever 43 for opening/closing an opening/closing valve 41. An air feed pipe 50 feeding compressed air is connected to the connector 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device and a suction method. More specifically, the present invention relates to an apparatus that facilitates oil draining work when bleeding air from a hydraulic system such as a brake of an automobile or lubricating system such as a transmission and an engine.

[0002]

2. Description of the Related Art Automobiles include a brake device,
It is equipped with a number of hydraulically operated devices. Bubbles are generated in the oil in the operating part of the hydraulic device due to fluctuations in oil pressure during operation or the like. If air bubbles accumulate in the oil, it will interfere with the operation of the hydraulic equipment. For this reason, it is necessary to remove the oil in the portion where the air bubbles are accumulated and to perform so-called air release. Also, oil is used in driving parts such as transmissions and engines. Since the oil in the lubricating system deteriorates particularly quickly, it needs to be changed at regular intervals. Since the oil for operating the hydraulic equipment also deteriorates over time, it is desirable to change the oil at regular intervals.

[0003] For example, the operation of draining the oil from the brake device is performed by two people. One person sits in the driver's seat and the other person is attached to the brakes on the wheels. Remove the lid of the air release screw of the brake device, and connect the drain pipe for oil release. Then, the two people perform the operation of the brake pedal and the opening and closing operation of the oil draining screw while taking time to talk with each other. This operation is performed until no bubbles are mixed in the discharged oil. In addition, there is a method of draining oil from a hydraulic device by pressurizing oil in a hydraulic system by a dedicated pressurizing device and discharging the oil from an operating portion side.

[0004]

However, the conventional oil removing method as described above has the following problems. That is, in the above work, it is difficult to match the timing of the two workers.For example, when the screw is not opened, the brake pedal is depressed and no oil is discharged, or when the screw is opened, the pedal is released. Release your feet and the oil will return, or your work will not be smooth. For this reason, in the case of an automobile having four wheels, it usually takes several hours to drain the oil of the brake devices of all the wheels. Further, in the method of pressurizing the oil of the hydraulic system by the pressurizing device, there is a possibility that various pressures may cause troubles such as valves in various hydraulic devices due to the pressure.

[0005] (Object of the present invention) The present invention is to solve the above-mentioned problems, for example, oil removal work at the time of bleeding air from a hydraulic system such as a brake of an automobile or a mission,
An object of the present invention is to provide a suction device and a suction method capable of easily removing oil from a lubrication system such as an engine.

[0006]

Means of the present invention taken to achieve the above object are as follows. According to the first aspect, the storage tank, the airway through which the compressed air is introduced and passed, and one end opening in the middle of the airway, and the other end communicating with the storage tank. A suction device comprising an intake path and a suction pipe connected to a storage tank.

A second aspect of the present invention is the suction device according to the first aspect, wherein a check valve is provided in a suction path including a suction pipe.

[0008] A third aspect of the present invention is the suction device according to the first or second aspect, further comprising a pressure gauge indicating the pressure in the storage tank.

According to a fourth aspect of the present invention, there is provided the suction device according to the first, second or third aspect, further comprising a capacity gauge for indicating an amount of the stored material in the storage tank. .

According to a fifth aspect of the present invention, compressed air is passed through the airway, and the inside of the storage tank is made negative by utilizing the negative pressure generated in the intake path intersecting with the airway, and is suctioned. It is a suction method.

The object to be suctioned by the suction device is a liquid such as oil or water, a gas such as air, or a powdery material.
Granules and various fluid solids.

The structures of the airway and the intake path are, for example, structures having a venturi portion similar to a carburetor of an automobile, but are not limited thereto. That is, a small diameter portion may be provided in the airway like a venturi portion,
The same inner diameter may be used without providing the small diameter portion. In addition, the airway and the intake path may be formed by hollowing out a lump or a tubular one may be used.

(Operation) In the suction device according to the present invention, when compressed air is passed through the airway, a negative pressure is generated in the intake path intersecting the airway. Since the intake path communicates with the storage tank, the air in the storage tank is discharged from the intake path to the outside through the airway. As a result, the pressure inside the storage tank becomes negative, and gas or liquid or the like can be sucked into the storage tank through the suction pipe.

If the suction device according to the present invention is used to remove oil from a hydraulic system such as a brake of an automobile, or to remove oil from a lubrication system such as a transmission or an engine, the work is facilitated. Can be. Further, when the oil is drained from the hydraulic system, the oil is depressurized rather than pressurized, so that there are no problems such as valves in many hydraulic devices in the hydraulic system.

In the case where the check valve is provided in the suction path including the suction pipe, when the suction by the suction device is stopped, for example, the oil does not flow backward and returns to the hydraulic device such as the brake device. .

In the case where a pressure gauge indicating the pressure in the storage tank is provided, suction can be performed while checking the pressure in the storage tank. Therefore, due to excessive negative pressure,
For example, there is no danger of causing malfunctions in hydraulic equipment, etc.
You can perform certain operations with low risk.

[0017] In the apparatus provided with the capacity gauge indicating the amount of the stored material in the storage tank, suction can be performed while checking the volume of the stored material in the storage tank. Therefore, it is possible to prevent the stored material from overflowing from the storage tank and hindering the operation.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is an explanatory view showing a cross section of a main part of an embodiment of a suction device according to the present invention, and FIG.
FIG. 3 is an explanatory view showing a method for bleeding a brake of a vehicle using the suction device according to the present invention.

Reference numeral A denotes a suction device provided with a storage tank 1. The storage tank 1 is made of metal and the bottom side is closed. At the center of the upper portion of the storage tank 1, a screw tube 10 is provided to protrude. A connection pipe 12 is attached to the upper side of the storage tank 1. The connection pipe 12 is connected to a plastic suction pipe 13 having a strength that does not easily collapse even under negative pressure. The other side of the suction pipe 13 is connected to an air vent (oil discharge section) of a hydraulic device or the like.

A check valve 14 is provided at an intermediate portion of the suction pipe 13. The check valve 14 functions to allow oil to flow from the air vent to the suction device A and not to flow oil from the suction device A to the air vent.

On the side of the storage tank 1, there is provided a capacity gauge 15 for indicating the level of the oil inside. The capacity gauge 15 includes a vertical liquid pipe 150 having upper and lower ends communicating with the storage tank 1, and a scale 151 indicating the capacity. The liquid tube 150 is made of transparent plastic, and the level of the oil that has entered inside can be visually recognized.

A suction control body 2 having a substantially cylindrical outer shape is screwed and attached to the screw tube 10. Reference numeral 11 denotes a packing for improving airtightness. The packing 11 includes a cylindrical portion and a flange portion. The suction control body 2 is made of metal, and is provided with a screw hole 20 at a required depth (depth) at the center on the lower surface side. An intake passage 21 that communicates with a later-described air passage 24 is provided vertically in an inner top portion of the screw hole 20.

A ventilation path 22 is also provided next to the intake path 21 vertically. A pressure gauge 3 provided on the side surface of the suction control body 2 (shown in FIG. 2; shown in FIG. 2 on the upper surface of the suction control body 2 for convenience) in the upper part of the ventilation path 22.
Is provided in the horizontal direction.

At the upper part of the suction control body 2, there is provided an airway 24 extending horizontally between the side surfaces on the diameter line. Runway 2
Reference numeral 4 denotes a screw hole 240 for connecting the connection tool 4, a conical hole 241 converging to the tip, and a small-diameter nozzle hole 242. In the lower part of the conical hole 241, the intake passage 21
Is open at its upper end, and the airway 24 and the intake path 21 communicate with each other.

In the screw hole 240, the connecting tool 4 is
Is screwed and attached. The connection tool 4 includes the screw 4
0, an on-off valve section 41 and a connection section 42. The opening / closing valve portion 41 is provided with an opening / closing lever 43. A nozzle 45 is provided at the tip of the screw portion 40. An air supply pipe 50 that supplies compressed air from the compressor 5 is connected to the connection section 42.

(Operation) The operation of the suction device A according to the present invention will be described with reference to FIGS. The air supply pipe 50 of the compressor 5 is connected to the connection part 42 of the connection tool 4 of the suction device A. In addition, the lid (not shown) of the air vent 60 of the brake 6 is removed, and the suction pipe 13 is connected to the air vent 60.

The open / close valve portion 41 is opened by operating the open / close lever 43 of the connecting tool 4, and compressed air is introduced into the air passage 24 from the nozzle 45. When compressed air is passed through the airway 24 at a high speed, a negative pressure is generated in the intake path 21 intersecting with the airway 24. Since the intake path 21 communicates with the storage tank 1, the air in the storage tank 1 flows from the intake path 21 to the air path 24.
Is discharged to the outside through the nozzle hole 242.

As a result, the pressure in the storage tank 1 becomes negative, and the oil (including air bubbles) in the brake 6 can be sucked into the storage tank 1 from the air vent 60 through the suction pipe 13. Further, since the storage tank 1 is provided with the capacity gauge 15, the suction can be performed while checking the amount of oil in the storage tank 1. Therefore, it is possible to prevent oil from overflowing from the storage tank 1 and hindering the operation.

Since the pressure gauge 3 is provided, suction can be performed while checking the pressure in the storage tank 1. Thus, there is no possibility that the excessive negative pressure will cause a problem in, for example, another hydraulic device of the same hydraulic system, and a reliable operation with less risk can be performed. Further, since the suction pipe 13 is provided with the check valve 14, the oil does not flow back into the brake 6 when the suction by the suction device A is stopped.

In this way, it is possible to easily bleed the oil from the brake 6. After the air is released, the oil level in the oil reservoir 80 of the master cylinder 8 drops, so that the oil is replenished. Reference numeral 9 denotes a brake pedal for operating the master cylinder 8. Further, if the suction device A according to the present invention is used, it is possible to easily perform the operation of removing oil from a lubrication system such as a transmission or an engine.

The terms and expressions used in the present specification are merely illustrative and not restrictive, and do not exclude terms and expressions equivalent to the above-mentioned terms and expressions. Further, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.

[0032]

The present invention has the above configuration and has the following effects. (A) In the suction device according to the present invention, when compressed air is passed through the airway, a negative pressure is generated in the intake path intersecting the airway. Since the intake path communicates with the storage tank, the air in the storage tank is discharged from the intake path to the outside through the airway. That is, according to the suction device and the suction method according to the present invention, the inside of the storage tank has a negative pressure, and the substrate or the liquid can be sucked into the storage tank through the suction pipe.
If the suction device according to the present invention is used to remove oil from a hydraulic system such as a brake of an automobile or to remove oil from a lubrication system such as a transmission or an engine, the work can be easily performed. Further, when the oil is drained from the hydraulic system, the oil is depressurized rather than pressurized, so that there are no problems such as valves in many hydraulic devices in the hydraulic system.

(B) In the case where the check valve is provided in the suction path including the suction pipe, when the suction by the suction device is stopped, for example, the oil flows backward and returns to the hydraulic device such as the brake device. Nothing.

(C) In the case where a pressure gauge indicating the pressure in the storage tank is provided, suction can be performed while checking the pressure in the storage tank. Therefore, there is no danger of causing a malfunction in, for example, a hydraulic device or the like due to excessive negative pressure, and a reliable operation with less risk can be performed.

(D) In the apparatus provided with the capacity gauge indicating the amount of the material stored in the storage tank, the suction can be performed while confirming the capacity of the material stored in the storage tank. Therefore,
It is possible to prevent the stored material from overflowing from the storage tank and hindering the work.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a main part showing an embodiment of a suction device according to the present invention.

FIG. 2 is an explanatory view showing a method of bleeding a brake of an automobile using the suction device according to the present invention.

[Explanation of symbols]

 A suction device 1 storage tank 10 screw pipe 11 packing 12 connection pipe 13 suction pipe 14 check valve 15 capacity gauge 150 liquid pipe 151 scale 2 suction control body 20 screw hole 21 suction path 22, 23 air path 24 running air path 240 screw Hole 241 Conical hole 242 Nozzle hole 4 Connector 40 Screw 41 Open / close valve 42 Connection 43 Open / close lever 5 Compressor 50 Air supply pipe 6 Brake 60 Air release section 7 Brake disk 8 Master cylinder 80 Oil reservoir 81 Oil pipe 9 Brake pedal

Claims (5)

[Claims] A storage tank (1), an air passage (24) through which compressed air is introduced and passed, one end of which is opened in the middle of the air passage (24), and the other end is the storage air passage. A suction device comprising: an intake path (21) communicating with a tank (1); and a suction pipe (13) connected to the storage tank (1). 2. A check valve (14) in a suction path including a suction pipe (13).
The suction device according to claim 1, further comprising: 3. The suction device according to claim 1, further comprising a pressure gauge (3) for indicating a pressure in the storage tank (1). 4. The suction device according to claim 1, further comprising a capacity gauge (15) for indicating an amount of the stored material in the storage tank (1). 5. Compressed air is passed through the airway (24), and the inside of the storage tank (1) is made negative by utilizing the negative pressure generated in the intake path (21) intersecting with the airway (24). A suction method characterized by suctioning.