JPH039812Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to an air brushing device that performs air brushing by spraying ink, paint, or other liquid for drawing using high-pressure gas. The present invention relates to an air brushing device.

[Background Art] As such an air brushing device, one having the following structure can be considered.

That is, a small portable carbon dioxide gas cylinder, a pressure adjustment mechanism that reduces the high pressure carbon dioxide obtained from the carbon dioxide gas cylinder to a relatively low predetermined pressure, and a relatively low pressure carbon dioxide gas obtained from the pressure adjustment mechanism. A valve mechanism and a nozzle are provided to open and close the flow path, and a liquid reservoir in which ink, paint, etc. is stored is provided at a position facing the tip of the nozzle, and the gas flow is ejected from the tip of the nozzle. This allows the ink, paint, etc. stored in the liquid reservoir to be sprayed.

However, in the air brushing device with the above structure, the gas pressure obtained at the nozzle side is constant, so the amount of gas ejected from the nozzle tip, that is, the concentration of the ink or paint sprayed, cannot be controlled. It is not possible to change the color shading, and the color shading must be adjusted by changing the distance to the spraying surface, which is inconvenient for drawing in a relatively narrow work space, such as on an office desk. It is.

Furthermore, since gas pressure is always applied to the downstream side of the pressure adjustment mechanism, from a safety standpoint, strong materials such as metal must be used for the components, which reduces the weight of the device. There are also disadvantages such as the inability to

[Purpose of the invention] An object of the invention is to provide an air brushing device that has good workability and can be lightweight.

[Summary of the invention] The present invention has a gas pressure adjusting mechanism interposed between a gas cylinder and a nozzle part, which is configured to block the flow of gas from the gas cylinder to the nozzle part and to reduce the gas pressure by displacement in the axial direction. A valve body for adjustment is provided, and the tip of the nozzle part is configured such that the displacement of the valve body controls the blocking of gas flow to the nozzle part and the adjustment of gas pressure by a press button. Improves work by varying the concentration of the liquid sprayed from the liquid reservoir, which is placed facing the liquid reservoir, and avoids constant pressure being applied to the downstream side of the gas pressure adjustment mechanism. do,
This makes it possible to reduce the weight of the device.

[Embodiment] FIG. 1 is a sectional view of an air brushing device that is an embodiment of the present invention, and FIG. 2 is a side view thereof.

Inside the main body 1 (cylindrical body) is a valve body housing 2.
(gas pressure adjustment mechanism) and a filter 3 made of sintered metal or the like are provided, and are fixed by an opening body 4 (opening mechanism) screwed onto the main body 1.

A cap opening needle 5 having a sharp tapered tip protrudes from the end surface of the cap opening body 4.
A through hole 6 is formed in the internal axial direction.

Furthermore, a packing 7 is provided on the end surface of the cap opening body 4 so as to surround the cap opening needle 5, and is fixed by a packing holder 8 screwed onto the main body 1.

A cylinder holder 9 is screwed onto the outer periphery of the end of the main body 1, and a sealing plate 11 of a gas cylinder 10, which is held inside the cylinder holder 9 and is filled with, for example, liquefied carbon dioxide, is tightly attached to the gasket 7. , the sealing plate 11 is opened by the opening needle 5.

On the other hand, a valve body 12 that is movable in the axial direction is provided inside the valve body housing 2, and one end thereof projects to the end face of the main body 1 through a through hole 13 formed in the end face of the main body 1. .

In this case, the valve body 12 is formed with a large diameter portion 14, a tapered portion 15, and a small diameter portion 16 in the axial direction,
Furthermore, between the valve housing 2 and the main body 1,
A valve seat O-ring 17 having an inner diameter smaller than the large diameter portion 14 of the valve body 12 is provided at a position surrounding the valve body 12.

The inner circumferential portion of the valve seat O-ring 17 and the outer circumferential portion of the large diameter portion 14 of the valve body 12 are always moved toward the left in the figure by a valve body spring 18 provided inside the valve body housing 2. By being brought into close contact with each other by the axial displacement of the biased valve body 12, it passes through the through hole 6 of the opening needle 5, the filter 3, and the gap between the valve body housing 2 and the outer periphery of the valve body 12. body 1
The gas flow flowing out from the through hole 13 is blocked, and the displacement of the diaphragm 20 and the large diameter piston 22 by pressing the push button 26 as described later causes the valve body 12 to resist the biasing force of the valve body spring 18. By displacing the valve body 12 in the direction of pushing it into the inside of the valve body housing 2 and bringing the outer periphery of the valve body 12 and the valve seat O-ring 17 into close contact and opening, the pressure of high-pressure gas from the gas cylinder 10 due to the diaphragm 20 and the large diameter piston 22 is reduced. The adjustment and the flow rate of gas released from the opening of the nozzle 33, which will be described later, are adjusted based on the pressure.

Further, an O-ring 4a is provided between the opening body 4 and the valve body housing 2.
The relief hole 1a is configured to maintain airtightness at the connecting portion between the valve housing 2 and the opening body 4, and to communicate with the portion where the valve body housing 2 and the opening body 4 are housed inside the main body 1. For example, an O-ring 4a or a valve seat O-ring 17 is formed.
This prevents an increase in the internal pressure inside the main body 1 due to deterioration such as the above.

Further, the end of the main body 1 in which the through hole 13 is formed is inserted into the operating section main body 19, and a flexible material such as rubber is inserted between the end of the main body 1 and the operating section main body 19. A diaphragm 20 and a diaphragm retainer 21 for fixing the diaphragm 20 are provided.

A large-diameter piston 22 is provided inside the diaphragm holder 21 so as to be movable in the axial direction, and one end of which abuts the end of the valve body 12 protrudes outside the main body 1. Displacement in the direction is transmitted to the valve body 12, and a fluid chamber A is formed by the diaphragm retainer 21, the large diameter piston 22, and the end surface of the main body 1, and is configured to communicate with the through hole 13 of the main body 1. has been done.

There is an O between the outer periphery of the main body 1 and the operating section main body 19.
A ring 23 is provided to maintain the airtightness of the fluid chamber A, and the main body 1 is fixed to the operating section main body 19 by a spring pin 24 provided to penetrate in a direction perpendicular to the plane of the drawing. There is.

Further, a cylinder 25 is formed in the operating part main body 19 at a predetermined angle in the axial direction of the main body 1,
One end communicates with a fluid chamber B formed between the diaphragm 20 and the operating section main body 19, and a small diameter piston 27 integrally formed with a push button 26 is inserted into the other end.

The cylinder 25 and the fluid chamber B are filled with silicone oil 28 which is an incompressible fluid, and the axial displacement and load of the push button 26 are controlled by the silicone oil 28 and the diaphragm 2.
0 to the large diameter piston 22.

An O-ring 29 is attached to the outer circumference of the small-diameter piston 27.
is attached to maintain the airtightness of the cylinder 25.

Further, a push button spring 30 is provided between the push button 26 and the operating section main body 19, and the push button spring 30 biases the pushing button 26 in a direction to protrude outside the operating section main body 19. The push button 26 is prevented from falling off from the operating section main body 19.

Furthermore, a fluid passage 32 is formed in the side surface of the operating section main body 19, and a nozzle 33 (nozzle section) screwed onto the operating section main body 19 is configured to communicate with the fluid chamber A.

In the vicinity of the nozzle 33, the pen tip 34
A pen 35 (liquid reservoir) is disposed at a position where the liquid reservoir (liquid reservoir) faces the tip of the nozzle 33, and is supported by a pen guide 36 (liquid reservoir support portion) whose one end is connected to the operating section main body 19. It is fixed in a removable manner.

The operation of this embodiment will be explained below.

Initially, the push button 26 is in a relaxed state, and the valve body 12 displaced by the push button 26 is projected to the outside of the valve body housing 2 by the biasing force of the valve body spring 18, and the valve body 12 is The outer periphery of the large diameter portion 14 and the inner periphery of the valve seat O-ring 17 provided inside the valve body housing 2 are brought into close contact with each other, thereby blocking the flow of gas inside the valve body housing 2. There is.

Next, the cylinder holder 9 is screwed onto the main body 1, and the gas cylinder 10 housed inside the cylinder holder 9 is
The sealing plate 11 is opened by the opening needle 5, and the sealing plate 11 is brought into close contact with the gasket 7, and the gas cylinder 10 enters the inside of the valve housing 2 through the through hole 6 of the opening needle 5 and the filter 3. The stored high-pressure carbon dioxide gas is introduced.

When the push button 26 is pushed into the operating section main body 19 by an operator or the like, the push button 26 is displaced by the cylinder 25, the oil 28 sealed inside the fluid chamber B, the diaphragm 20, and the like. is transmitted to the valve body 12 via the large diameter piston 22. As a result, the valve body 12 is displaced by the diaphragm 20 and the large-diameter piston 22 so that it is pushed into the valve body housing 2 (rightward in FIG. 1), and the large-diameter portion 14 of the valve body 12 is pushed into the valve seat O-ring. From the close contact state with 17, they separate from each other and become open. As a result, the passage blockage caused by the close contact between the large diameter portion 14 of the valve body 12 and the valve seat O-ring 17 is released, and an annular orifice ( A gap) is formed. Therefore, gas cylinder 10
The high-pressure carbon dioxide gas applied to the inside of the valve housing 2 passes through this orifice, further passes through the through hole 13, and flows out into the fluid chamber A serving as a secondary pressure chamber. As a result, the large diameter piston 22 has two
The valve body 12 is in close contact with the pressure on the next side and maintains the pressure corresponding to the pushing force of the push button 26.
Perform release.

Furthermore, the carbon dioxide gas that has flowed into the fluid chamber A is injected from the tip of the nozzle 33 through the fluid passage 32 toward the nib 34 of the pen 35, and the ink, paint, etc. stored in the nib 34 are , the gas is sprayed at a concentration depending on the gas flow rate injected from the nozzle 33.

In this way, the gas flow rate injected from the nozzle 33, that is, the concentration of the ink, paint, etc. to be sprayed, can be set to a desired value by adjusting the pressing force or load of the press button 26, so that the sprayed surface can be adjusted to a desired value. This makes it possible to adjust color shading without changing the distance to the front, improving work efficiency in relatively narrow work spaces.

Furthermore, by releasing the pressing operation on the press button 26, the valve body 12 is projected in the direction of the fluid chamber A by the biasing force of the valve body spring 18, and the valve seat O
The inner periphery of the ring 17 and the outer periphery of the large diameter portion 14 of the valve body 12 are brought into close contact, and the flow of gas inside the valve body housing 2 is immediately interrupted.
The pressurization of the fluid chamber A formed inside the fluid chamber 9 is released.

Therefore, pressurization of the fluid chamber A formed in the operation part main body 19 is not performed except when necessary, and furthermore, in the main body 1, high pressure gas from the gas cylinder 10 is only applied to the opening body 4 and the valve body housing 2. Because of this structure, the main body 1 and the operating unit main body 19 can be made of synthetic resin, which is lighter and cheaper than metal, making it possible to reduce the weight and cost of the entire device. .

Further, since the displacement and load of the push button 26 to the valve body 12 are transmitted via the incompressible oil 28 sealed in the cylinder 25, the displacement and load of the push button 26 are transmitted to the valve body 12.
2, and by communicating the inside of the cylinder 25 and the fluid chamber B, the position of the push button 26 can be arbitrarily set relative to the valve body 12 and the large diameter piston that displaces the valve body 12. This increases the degree of freedom in designing and manufacturing the device.

Furthermore, the press button 26 is provided with a small-diameter piston 27 and the valve body 12 is displaced by the large-diameter piston 22, so that a relatively light pressing force is applied to the press button 26. This makes it possible to obtain a large displacement force on the large diameter piston 22 that displaces the valve body 12,
Smooth displacement of the valve body 12 by the push button 26 without being affected by the biasing force of the valve body spring 18 and the resistance force generated in the large diameter piston 22 by the gas pressure applied to the fluid chamber A. operation becomes possible.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the spirit thereof.

For example, it is also possible to use other liquids instead of silicone oil.

Further, the liquid reservoir support portion may be provided at any position as long as the liquid reservoir portion can be attached to the tip of the nozzle portion, and the angle between the liquid reservoir portion and the nozzle portion may be any angle.

[Effects] (1) An opening mechanism for opening the gas cylinder by making an opening in the sealing plate of the gas cylinder in a cylinder to which a cylinder holder in which the gas cylinder is housed is removably connected at one end; A gas pressure adjustment mechanism that controls the gas pressure discharged from the gas cylinder via the opening mechanism is built-in, and a nozzle part connected to the outlet side of the gas pressure adjustment mechanism and a tip part of the nozzle part are provided. Pressure is applied to the gas pressure adjustment mechanism of an air brushing device that is provided with a liquid reservoir disposed facing a liquid reservoir and a liquid reservoir support section that removably supports the liquid reservoir. A valve body is provided which is brought into close contact with and released from the valve seat means by displacement in the axial direction by operating a valve body adjustment means such as a button, and which shuts off and circulates gas from the gas cylinder to the nozzle portion, The gas pressure is adjusted by adjusting the gas pressure and the gas flow rate by adjusting the gas pressure by bringing the valve body and the valve seat means into close contact and opening under the control of the valve body adjusting means, thereby injecting and stopping the gas from the nozzle part. Furthermore, the flow rate of the injected gas can be arbitrarily adjusted based on the operation of the valve body adjusting means, and the concentration of the liquid sprayed from the liquid reservoir can be adjusted arbitrarily depending on the gas flow rate. I can,
For example, it is possible to change the shade of color or the like on the spraying surface without changing the distance to the spraying surface, improving work efficiency.

(2) As a result of (1) above, the action of gas pressure on the nozzle side is limited to only when necessary, and components such as the cylinder are made of synthetic resin, which is lighter and cheaper than metal. This makes it possible to reduce the weight and cost of the entire device.

(3) Transmission of displacement and load between the push button and the entire body is performed via fluid pressure, so
The displacement operation of the valve body by the press button is reliably performed, and the positional relationship between the press button and the valve body can be set arbitrarily, and the degree of freedom in designing and manufacturing the device is improved.

(4) Transmission of displacement and load to the valve body of the push button via liquid pressure is performed by a small diameter piston connected to the push button and a large diameter piston connected to the valve body. A relatively large displacement force can be obtained on the valve body side by a slight pressing operation on the press button, and the valve body can be smoothly displaced by the press button.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an air brushing device which is an embodiment of the present invention, and FIG. 2 is a side view thereof. 1...Main body (cylindrical body), 2...Valve body housing,
3... Filter, 4... Opening body (opening mechanism), 5
...Opening needle, 6...Through hole, 7...Putkin, 8
...Putskin holder, 9...Cylinder holder, 10
... Gas cylinder, 11 ... Seal plate, 12 ... Valve body,
13...Through hole, 14...Large diameter part, 15...Tapered part, 16...Small diameter part, 17...Valve O-ring,
18...Valve body spring, 19...Operation unit main body, 20...
...Diaphragm, 21...Diaphragm holder,
22...Large diameter piston, 23...O ring, 24
...Spring pin, 25...Cylinder, 26...
...Press button, 27...Small diameter piston, 28...
Oil, 29... O-ring, 30... Press button spring, 31... Press button holder, 32... Communication path, 33... Nozzle (nozzle portion), 34... Pen tip (liquid reservoir), 35... ...pen (liquid reservoir),
36...Pen guide (liquid reservoir support part), A,
B...Fluid chamber.

Claims (1)

[Claims for Utility Model Registration] (1) An opening for opening the gas cylinder by drilling a hole in the sealing plate of the gas cylinder in a cylinder to which a cylinder holder in which the gas cylinder is housed is removably connected at one end. a nozzle section that includes a plug mechanism and a gas pressure adjustment mechanism that controls gas pressure discharged from the gas cylinder via the plug opening mechanism, and that is connected to an outlet side of the gas pressure adjustment mechanism; The air brushing device is provided with a liquid reservoir disposed with a liquid reservoir facing the tip thereof, and a liquid reservoir support portion that detachably supports the liquid reservoir, the air brushing device comprising: The pressure adjustment mechanism
The valve body is brought into close contact with and released from the valve seat means by displacement in the axial direction under the control of the operation of the valve body adjustment means,
A valve body is provided for shutting off and circulating gas from the gas cylinder to the nozzle portion, and adjusting the gas pressure and adjusting the gas pressure by bringing the valve body and the valve seat means into close contact and opening under the control of the valve body adjusting means. An air brushing device characterized in that gas flow rate is adjusted by gas pressure. (2) The air brushing device according to claim 1, wherein displacement and load are transmitted between the valve body adjusting means and the valve body through liquid pressure. . (3) Transmission of displacement and load from the valve body adjustment means to the valve body through liquid pressure is achieved through a small diameter piston that comes into contact with the valve body adjustment means and a large diameter piston that comes into contact with the valve body. The air brushing device according to claim 1, characterized in that the air brushing device is operated by a piston and a diaphragm. (4) The air brushing device according to claim 1, wherein the valve body adjusting means is a push button.