JPH08135816A - Valve member and pump device using the same - Google Patents

Abstract

PURPOSE: To provide a valve member and a pump device using the same which is accurate in the operation, simple in the structure and inexpensively manufactured. CONSTITUTION: A valve member B has a cylindrical rubber valve element 1 having one end closed with a wall part 2 and the other end opened. A notch part 3 is provided near the wall part 2 of the valve element 1, leaving a hinge part 30. The notch part 3 is provided by engraving a material with a thin blade without cutting off the material. A case 4 of an air pump device P is provided with an air pump P1 driven by a motor 9. A piston 17 is disposed in a cylinder 12 of the air pump P1 so that an air chamber 22 is provided. An intake pipe 16 is provided to extend through a blockade wall 13 and have the inner end mounted to the valve member B. The valve member B has the wall part 2 and notch part 3 disposed in the air chamber 22 side. The piston 17 is provided in the inner wall 2 with the valve member B extending therethrough. The valve member B is mounted to have the notch part 2 side projected to a hollow part 21 and the opening side opened to the air chamber 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve member and a pump device using the valve member.

[0002]

2. Description of the Related Art A valve device is a means for stopping the flow of a fluid such as a gas or a liquid or releasing the stop to allow the fluid to flow. For example, valve devices are also used in pump devices that supply air to aquariums of goldfish and tropical fish. As a valve device used in such a comparatively small and inexpensive pump device, it is desirable that the valve device is accurately operated, has a simple structure, and can be manufactured at low cost. The conventional valve device generally has a structure in which a steel ball or a plate valve is provided at the flow port as a fluid stopping means.

[0003]

However, the above-described conventional valve device has the following problems. That is, the steel ball and the plate valve are required to have high dimensional accuracy in order to block the flow port and reliably stop the fluid at the flow port. In addition, the structure of the valve device has a large number of parts and tends to be complicated. Therefore, the price of the valve device has increased, and the price of the pump device using the valve device has also increased.

[0004]

The object of the present invention is to solve the above problems.
An object of the present invention is to provide a valve member that operates accurately, has a simple structure, and can be manufactured at low cost, and a pump device using the valve member.

[0005]

[Means for Achieving the Object] The means of the present invention for achieving the above object are as follows. The first means is a valve member for stopping or circulating the flow of fluid, the valve member having a closed portion at one end and an opening at the other end. A possible valve body of the valve and a cut portion provided in the vicinity of the closed portion of the valve base are provided, and on the closed portion side of the valve base on the cut portion side, the remaining portion of the cut portion is hinged. The valve member is configured to swing as a member, and the notch is closed when the inside of the valve base becomes negative pressure, and the notch is opened when the outside of the valve base becomes negative. .

The second means is a pump device, which comprises suction and discharge means for sucking and discharging fluid, and drive means for driving this suction and discharge means, wherein the suction and discharge means is provided. A cylinder, a piston that can move forward and backward in the cylinder, a fluid chamber that is provided in the cylinder and whose pressure fluctuates due to the operation of the piston, a suction portion that is provided in the fluid chamber, and the fluid chamber. A valve member according to the first means is provided in the fluid chamber such that the notch side is inside the fluid chamber, and the discharge portion is provided with the first means. This is a pump device in which the valve member is provided in the fluid chamber with the opening side being inside.

It is desirable that the cut portion is provided without removing the material so that the contact surface is in close contact when the cut portion is closed. For example, it is provided by cutting with a thin blade without cutting the material. The target fluid is water, oil, air, steam, or the like.

[0008]

In the valve base, the closed side of the valve base oscillates with the remaining part of the cut base as the hinge, so that the fluid flows inside or outside the valve base, and a negative pressure is applied to the inside. When the pressure becomes low, the notch closes and closes, and when the outside pressure becomes negative, the notch opens.

When the piston of the intake / exhaust device of the pump device is driven by the drive device and moves in the direction of compressing the fluid in the fluid chamber, the pressure on the outside of the valve member provided in the intake portion increases. That is, since the inside of the valve member has a negative pressure,
The notch is closed and the fluid flow is stopped. Further, the pressure on the inner side of the valve member provided in the discharge portion becomes high. That is, since the outside pressure of the valve member is negative, the notch is opened and the fluid in the fluid chamber is discharged.

When the piston of the suction / exhaust device of the pump device is driven by the drive device to move in the direction of expanding the fluid in the fluid chamber, the pressure on the outside of the valve member provided in the suction portion becomes low. That is, since the outside pressure of the valve member becomes negative, the notch opens, and the fluid flows and is introduced into the fluid chamber. Further, the pressure on the inner side of the valve member provided in the discharge portion becomes low. That is, since the inside of the valve member has a negative pressure, the notch is closed and the fluid flow is stopped.

By repeating the above-mentioned operation by the driving device, the fluid is continuously introduced by flowing from the suction part to the fluid chamber, and the fluid is continuously discharged from the fluid chamber from the discharge part. That is, by using the suction side, it becomes a suction pump, and by using the discharge side, it becomes a compression pump.

[0012]

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view of an essential part showing an embodiment of the valve device according to the present invention, and FIG. 2 is a vertical sectional view of the valve device shown in FIG. 1 in a normal state. The valve member B has a cylindrical valve base 1. One end of the valve member B is closed by the wall 2 and the other end is open. The valve base 1 is a flexible material and is formed of rubber having sufficient durability.
A notch 3 is provided in the vicinity of the wall 2 of the valve base 1, leaving the hinge 30. The cut portion 3 is provided by cutting with a thin blade without cutting the material.

The dimensions of each part of the valve member B in this embodiment are as follows.
The outer diameter of the valve base 1 is 3 mm, the wall thickness is 0.5 mm, the distance from the wall portion 2 to the cut portion 3 is 1.5 mm, and the circumferential length of the cut portion 3 is 7 mm. It should be noted that the dimensions of each part are not limited to the above numerical values, and are set as appropriate according to the properties of the fluid, the use of the valve member, and the like.

(Operation) FIG. 3 is a vertical sectional view when the valve device shown in FIG. 1 is opened, and FIG. 4 is a vertical sectional view when the valve device shown in FIG. 1 is closed. The operation of this embodiment will be described with reference to the drawings. The wall portion 2 side of the valve base 1 with the notch 3 as a boundary is the hinge portion 30 that is the remaining portion of the notch 3.
It swings with the fulcrum as a fulcrum, whereby the notch 3 can be opened and closed. Since the cut portion 3 is provided by cutting with a thin blade tool without cutting the material, the contact surfaces match when closed, and the adhesion is excellent.

When the inside a of the valve base 1 has a negative pressure, the notch 3 is closed and closed, and the flow of air from the outside b to the inside a is stopped (see FIG. 4). Further, when the outside b of the valve base 1 has a negative pressure, the notch 3 opens to allow air to flow from the inside a to the outside b (see FIG. 3).

FIG. 5 is an explanatory view showing the internal structure of an embodiment of the air pump device according to the present invention. Reference numeral P denotes an air pump device, which has a case 4. In case 4,
A battery box 5 is provided. A battery 6 is loaded in the battery box 5. Reference numeral 7 is an external power source connecting portion, and 8 is a power source switch. The case 4 is provided with a motor 9 which constitutes a driving means. The rotating shaft of the motor 9 has a rotor 10
Is attached. The rotating body 10 is provided with a drive shaft 11 which is eccentrically provided. The drive shaft 11 is rotatably inserted in a bearing 19 described later.

The case 4 is provided with an air pump P1 which is a suction / discharge means. Air pump P1 is cylinder 12
have. On both sides of the cylinder 12, there are sealing walls 1
3 and 14 are provided. An oiling hole 15 is provided on the peripheral wall of the cylinder 12. A piston 17 is provided inside the wall portion 14 side of the cylinder 12. The portion sandwiched by the piston 17 and the wall portion 13 is an air chamber 22 which is a fluid chamber.

An intake pipe 16 which is an intake portion is provided so as to penetrate the sealing wall 13. The outer end of the intake pipe 16 projects outside the case 4. Further, at the inner end of the intake pipe 16,
The above-mentioned valve member B is attached. The valve member B is the wall 2
The notch 3 is arranged on the side of the air chamber 22 and is attached to the air chamber 22 with the outside exposed.

A hollow portion 21 is provided inside the piston 17. A valve member B, which is a discharge portion, is provided so as to penetrate the inner wall of the piston 17. The valve member B is attached to the hollow portion 21 with the notch 2 side protruding and the opening side being open to the air chamber 22. A piston shaft 18 penetrates the outer wall of the piston 17. The piston shaft 18 slidably penetrates the sealing wall 14 of the cylinder 12.

A tubular bearing 1 is provided at the tip of the piston shaft 18.
9 is provided, and the bearing 19 has the rotating body 1 as described above.
The drive shaft 11 of 0 is inserted. The piston shaft 18
The middle part of is connected by a rubber connecting tube 180,
It is bendable. As a result, when the motor 9 operates and the rotating body 10 rotates, the piston 17 moves back and forth. An exhaust hole 20 is provided in the piston shaft 18, and the air exhausted from the exhaust hole 20 is exhausted to the outside from an exhaust unit (not shown) provided in the case 4.

(Operation) The operation of the air pump device P will be described with reference to FIGS. When the piston 17 of the air pump P1 is driven by the motor 9 and moves in the direction of compressing the air in the air chamber 22 (leftward in FIG. 5), the valve member B provided in the intake pipe 16 moves to the outside (air chamber). The pressure of 22) becomes high. That is, since the inside of the valve member B has a negative pressure, the notch 3 is closed.

Further, in the valve member B provided on the piston 17 and serving as a discharge portion, the pressure on the inner side (air chamber 22) becomes high. That is, since the outside (hollow portion 21) of the valve member B has a negative pressure, the notch 3 opens, and the fluid in the air chamber 22 passes from the valve member B through the piston shaft 18 and is discharged from the exhaust hole 20. .

When the piston 17 moves in the direction of expanding the air in the air chamber 22 (rightward in FIG. 5), the valve member B provided in the intake pipe 16 has a lower pressure on the outside (air chamber 22). . That is, since the outside of the valve member B has a negative pressure, the notch 3 opens, air flows, and the intake pipe 1
6 and flows into the air chamber 22. Also, the piston 17
The pressure of the valve member B provided on the inner side (air chamber 22) becomes low. That is, since the inside of the valve member B has a negative pressure, the notch 3 is closed.

By repeating the above-described operation by driving the motor 9, air is introduced from the intake pipe 16 into the air chamber 2.
2 is continuously introduced into the case 2, and the introduced air is continuously discharged into the case 4 from the air chamber 22 through the piston shaft 18 and the discharge hole 20. Then, it is discharged to the outside from the exhaust portion of the case 4. The present invention is not limited to the illustrated embodiments, and various modifications can be made within the scope of the claims.

[0025]

The present invention having the above-mentioned structure has the following effects. In the valve device according to the present invention, a notch is provided in a part of the tubular valve base, and on the side of the notch, the remaining part of the notch swings as a hinge. Then, when the fluid circulates inside and outside the valve member and the inside pressure of the valve base becomes negative, the notch is closed and closed, and when the outside pressure of the valve base becomes negative, the notch opens. As described above, since the valve member has a simple structure, it operates accurately and is less likely to malfunction. Further, it can be manufactured at low cost and is suitable for use in, for example, a small and inexpensive pump device.
Furthermore, a pump device using the valve member according to the present invention,
It can be manufactured at low cost because the inexpensive valve member is used.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part showing an embodiment of a valve device according to the present invention.

FIG. 2 is a vertical cross-sectional view of the valve device shown in FIG. 1 in a normal state.

FIG. 3 is a vertical cross-sectional view of the valve device shown in FIG. 1 when the valve device is sealed.

FIG. 4 is a vertical cross-sectional view of the valve device shown in FIG. 1 when opened.

FIG. 5 is an explanatory diagram showing an internal structure of an embodiment of an air pump device according to the present invention.

[Explanation of symbols]

 P Air pump device B Valve member 1 Valve base 2 Wall part 3 Notch part P1 Air pump 4 Case 5 Battery box 6 Dry battery 7 External power connection part 8 Power switch 9 Motor 10 Rotating body 11 Drive shaft 12 Cylinder 13 Blocking wall 14 Blocking wall 15 Lubrication hole 16 Intake pipe 17 Piston 18 Piston shaft 180 Connection tube 19 Bearing 20 Exhaust hole 21 Hollow part 22 Air chamber

Claims (2)

[Claims] 1. A valve member for stopping or circulating the flow of fluid, wherein the valve member has a closed portion at one end and an opening at the other end.
A tubular valve base body through which a fluid can flow, and a cutout portion provided in the vicinity of the closed portion of the valve base body are provided. The part is configured to swing as a hinge part, and the notch is closed when the inside of the valve base becomes negative pressure, and the notch is opened when the outside of the valve base becomes negative. Characteristic, valve member. 2. A pump device comprising: a suction and discharge means for sucking and discharging a fluid; and a drive means for driving the suction and discharge means, wherein the suction and discharge means includes a cylinder and an inside of the cylinder. A piston that can be moved forward and backward, a fluid chamber that is provided inside the cylinder and whose pressure fluctuates due to the operation of the piston, a suction portion that is provided in this fluid chamber, and a discharge portion that is provided in the fluid chamber. The valve member according to claim 1 is provided in the fluid chamber in the suction portion, and the valve member according to claim 1 is opened in the fluid chamber in the discharge portion. A pump device characterized in that the side is provided internally.