JPH0825352B2 - Applicator pressure device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint marker, a correction liquid applicator, a cosmetic applicator such as a manicure, a chemical applicator, a writing implement, and the like for applying a liquid application liquid to a predetermined portion of an application surface. Therefore, pressurizing the coating liquid storage chamber,
The present invention relates to a pressurizing device that pressurizes the coating liquid storage chamber by attaching and detaching a cap in an applicator that supplies the coating liquid by this pressure.

[0002]

2. Description of the Related Art Hitherto, it has been customary to apply a quick-drying coating liquid having a relatively high viscosity such as a correction liquid, a paint, and a nail polish to a predetermined portion with a brush.

Recently, these coating liquids are accommodated in a main body, and the coating liquid is supplied by a predetermined amount to a coating body provided at a tip portion of the main body, and the coating body is pressed against a coating surface, or There is a marker-shaped applicator that applies this application liquid to a predetermined portion by moving along an application surface.

As an applicator of such a type, the applicator is pressurized in advance, the applicator is supplied by this pressure, and the applicator is provided with a valve function to control the supply amount of the applicator. Was developed. Such an applicator supplies the application liquid by pressure, so that the application liquid can be stably supplied even when the viscosity of the application liquid is high, and the valve function of the application body controls the amount of the application liquid to be operated. There are advantages such as stability. However, in such a case, it is necessary to maintain the pressure inside the coating liquid storage chamber at a predetermined pressure.

However, for example, in the case where the coating liquid storage chamber is filled with pressurized air in advance, the pressure decreases as the coating liquid is consumed, and it is difficult to keep this pressure constant. . It is also possible to fill the coating liquid storage chamber with a liquefied gas or the like having a predetermined vapor pressure. However, although the pressure required to supply the coating liquid is low, the vapor pressure of the liquefied gas is generally high, and the pressure in the coating liquid storage chamber becomes unnecessarily high, resulting in excessive supply of the coating liquid. In addition, since liquefied gas is generally flammable, it is not preferable in terms of safety.

[0006]

SUMMARY OF THE INVENTION The present invention has been made based on the above circumstances. By providing a pressurizing mechanism in the cap, pressurized air is replenished into the coating liquid storage chamber each time the cap is attached or detached. The present invention provides a pressurizing device for an applicator that can maintain the pressure in the coating liquid storage chamber at a relatively low and appropriate pressure until the coating liquid is completely consumed.

[0007]

A pressurizing device for an applicator according to the present invention applies a coating liquid to a predetermined portion of a coating surface by communicating with the coating liquid storage chamber for storing the coating liquid and the coating liquid storage chamber. In the applicator provided with the applicator, the applicator is provided with a valve mechanism, and the valve mechanism acts as a check valve that allows only the flow of fluid from the outside to the inside, and at the time of writing. This valve mechanism is opened by writing pressure to enable the supply of the coating liquid from the coating liquid storage chamber to the coating body, and is equipped with a cap that fits with the coating body. Is provided with a pressurizing mechanism that pressurizes the internal air when the cap is fitted and presses the air into the coating liquid storage chamber through the valve mechanism. The cylindrical piston part formed on the outer circumference and the shape on the cap side It is and a cylinder portion slidably fitted with an airtight to the piston portion.

[0008]

Therefore, when the cap is fitted, the cylinder portion is fitted in the piston portion in an airtight manner, the inside of the cap is sealed, and when the cap is completely fitted, the cylinder portion becomes the piston portion. Slide along and compress the air inside the cap. The compressed air is press-fitted into the applicator reservoir chamber via the applicator. Therefore, each time the cap is attached or detached, the pressurized air is replenished into the coating liquid storage chamber. Further, since the compression ratio of the air in the cap is constant, the pressure of the replenished pressurized air does not rise above the predetermined pressure. Therefore, the pressure in the coating liquid storage chamber can be kept constant at all times, and the supply of the coating liquid is extremely stable.

In another embodiment, the pressurizing mechanism includes a bellows provided in the cap, and when the cap is fitted, the end portion of the bellows is brought into close contact with the applicator body and is axially moved. It is compressed, and the air inside the bellows is compressed and pressed into the coating liquid storage chamber through the coating body.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. The embodiment described below relates to an applicator for applying a correction liquid. FIGS. 1 to 4 show the first embodiment of the present invention.
An example of is shown. First, the configuration of the entire applicator will be described.

In the figure, 1 is the main body of this applicator, and 2 is a cap. The main body 1 has a cylindrical coating solution storage chamber 3 formed therein. A correction liquid, that is, a coating liquid 4 is stored in the coating liquid storage chamber 3, and a space 5 of the coating liquid storage chamber 3 is filled with pressurized air. A stirring ball 6 is housed in the coating liquid storage chamber 3, and the correction liquid stored in the coating liquid storage chamber 3 can be stirred by shaking the coating tool.

The body 10 is provided with a coating body 10 at the tip thereof.
Is provided. The applicator body 10 is composed of a holder 11 and a coating ball 12. This holder 1
1 has a hollow cylindrical shape, and has a flow passage 13 formed therein. A plug 14 is provided at the upper end of the holder 11.
The plug 14 has a passage 15 formed therein. Then, through the passage 15, the communication passage 13
Communicate with the inside of the coating liquid storage chamber 3.

A cone-shaped ball holding portion 17 is formed at the tip of the holder 11, and the inner surface of the ball holding portion 17 is formed into a conical surface. A ball seating surface 18 is formed above the ball holding portion 17, and the ball seating surface 18 forms a shallow conical surface.
A supply port 16 is opened at the center of the ball seating surface 18, and the supply port 16 communicates with the communication passage 13. Therefore, the coating liquid 4 in the coating liquid storage chamber 3 is configured to be pushed out from the supply port 16 via the passage 15 and the communication passage 13 by the pressure of the pressurized air in the space 5. ing.

The ball 12 is rotatably held between the ball holding portion 17 and the ball seat surface 18. The ball 12 has a diameter of, for example, about 3 mm in the case of this correction liquid applicator. The ball 12 is held with a gap in a space surrounded by the ball holding portion 17 and the ball seating surface 18.

A biasing member 19 made of a steel wire having a small diameter is provided in the holder 11. The urging member 19 is held in a curved state, and its lower end is inserted into the supply port 16 to urge the ball 12 downward, and the ball 12 is held by the ball holding portion 17. It is configured to be in close contact with the inner surface and maintain the seal at this portion.

In such an applicator, when it is not used as shown in FIG. 2, the above-mentioned coating balls 12 are held by the pressure in the coating liquid storage chamber 3 and the urging force of the urging member 19. The inner peripheral surface of the portion 17 is pressed to seal this portion. Therefore, in this unused state, the coating liquid does not flow out.

In using this applicator, when the ball 12 is pressed against the application surface A as shown in FIG. 3, the ball 12 resists the above pressure and the urging force of the urging member 19 by this pressing force. It moves backward and separates from the inner surface of the ball holding portion 17, and a gap is formed therebetween. But,
The ball 12 sits on the opening of the supply port 16 on the ball seating surface 18 and closes the supply port 16. Therefore,
Even in this state, the coating liquid does not flow out.

Next, the coating operation state, that is, FIG.
When the application tool is moved along the application surface A and the ball 12 is rolled on the application surface A from the state shown in FIG. 4, the ball 12 slides against the ball seating surface 18. The ball 12 shifts in the direction opposite to the moving direction due to the sliding resistance, and the ball 12 is displaced from the center of the ball holding portion 17 and the center of the ball seating surface 18. Thus, the supply port 16 is opened, and the coating liquid 4 is supplied from the supply port 16 by the pressure in the coating liquid storage chamber 3. The supplied coating liquid adheres to the surface of the ball 12 and is applied to a predetermined portion of the coating surface A by rolling of the ball 12.

The ball bearing surface 18 is guided to the center of the ball bearing surface 18 when the ball 12 is pressed against the coating surface A, as shown in FIG.
While sitting accurately so as to block the supply port 16,
It is preferable that when the ball 12 rolls on the application surface, the ball 12 easily deviates from the center of the ball seating surface 18 and the supply port 16 is opened. For this purpose, the shape of the ball seating surface 18 is preferably a shallow conical shape as described above, and the apex angle is 120 ° or more, preferably about 140 °.
Of course, the shape and angle of the ball seating surface should be appropriately set depending on the type of applicator, the type of coating liquid, the purpose of use, and the like.

For example, in the applicator and the paint marker for this correction fluid, the ball seat surface having an apex angle of about 140 ° is suitable, but like the manicure applicator,
When there is little friction between the application surface and the ball and it is necessary to supply the application liquid in response to the delicate rolling of the ball, the ball seating surface is a flat surface, or conversely, a surface that is convex downward. It may be.

Since such an applicator supplies the coating liquid by the pressure in the coating liquid storage chamber 3, the coating liquid 4 can be reliably supplied even when the coating liquid 4 has a high viscosity such as a correction liquid. Further, since the coating liquid is supplied only when the ball 12 rolls, and is not supplied in other cases, the coating liquid can be surely applied to a predetermined portion and the surroundings are not stained.

When the coating operation is interrupted, the coating liquid, that is, the correction liquid adhered to the surface of the ball 12 is solidified on the surface of the ball 12 in the form of a film. However, at the start of the next coating operation, this solidified coating is
It is drawn into the inside through the gap between the ball holding portion 2 and the ball holding portion 17, and is dissolved and mixed with the liquid application liquid inside. Therefore, even in the case of a coating liquid having a high quick-drying property such as the correction liquid, the solidified correction liquid does not hinder the operation or adhere to the surroundings.

The pressure in the coating liquid storage chamber 3 required to supply the coating liquid 4 may be a relatively low pressure. Therefore, in the non-use state, the pressing force for pressing the ball 12 against the ball holding portion 17 is insufficient due to this pressure, and there is a possibility that the sealing of this portion becomes insufficient. In this embodiment, since the ball 12 is urged by the urging member 19, the ball 12 is reliably pressed by the ball holding portion 17, and
A sufficient seal can be maintained.

Further, as the coating liquid 4 is consumed, the volume of the space 5 in the coating liquid storage chamber 3 increases, so that the pressure of the pressurized air in this space decreases and the coating liquid is supplied. Becomes insufficient. In order to prevent this, it is conceivable to increase the pressure of the pressurized air in the space 5 at the initial stage in anticipation of this decrease in pressure. However, in this case, the pressure in the initial stage becomes too high, and the supply of the coating liquid becomes excessive. In order to prevent such a problem, the cap 2 of the applicator is provided with a pressurizing mechanism for supplying pressurized air into the coating liquid storage chamber 3. The configuration of this pressure mechanism will be described below.

That is, as shown in FIG. 5 and FIG.
A piston portion 21 having a predetermined axial length is formed on the outer peripheral surface of the holder 11. The cap 2 is made of a synthetic resin material having elasticity, and a cylinder portion 23 that is fitted in the piston portion 21 so as to be airtight and slidable is formed at an edge portion of the cap 2. Therefore, when the cap 2 is fitted in the holder 11, the inside of the cap 2 is sealed by fitting the edge of the cylinder portion 23 of the cap 2 into the piston portion 21 as shown in FIG. By further fitting the cap 2 from this state as shown in FIG. 6, the air in the cap 2 is compressed. Due to the pressure of the compressed air, the ball 12 retreats and a gap is formed between the ball 12 and the ball holding portion 17. The compressed air passes through the gap and passes through the holder 11 and the coating liquid storage tank 17. It is pressed into the chamber 3.

Therefore, each time the cap 2 is attached or detached, pressurized air is replenished in the coating solution storage chamber 3 and the coating solution 4 is consumed, so that the volume of the space 5 increases and the coating solution storage chamber 3 increases. The pressure in the chamber 3 is maintained at a predetermined pressure. In addition,
The compression ratio of the internal air when the cap 2 is fitted is constant, and therefore, even when the cap 2 is frequently attached and detached, the pressure in the application liquid storage chamber 3 does not rise above a predetermined pressure.

FIG. 7 shows a second embodiment having another cap structure having such a pressurizing function.
In this device, a bellows 31 which can be compressed in the axial direction is provided inside a cap 2. In addition, a ring-shaped contact seal surface 32 that contacts the end of the bellows 31 is formed at the tip of the holder 11. Further, a fitting projection 33 is formed on the edge of the cap 2, and a fitting recess 34 is formed on the outer peripheral surface of the holder 11.

In the case of FIG. 7, when the cap 2 is fitted, the end of the bellows 31 comes into contact with the abutment seal portion 32 of the holder 11, and the air in the bellows 31 is compressed and the ball 12 is retracted and press-fitted into the coating liquid storage chamber 3. Further, in a state where the cap 2 is completely fitted, the fitting convex portion 33 and the fitting concave portion 34 of the cap 2 are elastically fitted to each other, giving a fitting feeling to the fitting of the cap 2. It also keeps a completely fitted state.

The present invention is not limited to the above embodiment. Although the applicator for applying the correction liquid has been described in the above embodiments, the applicator may be applied to a paint marker, a cosmetic applicator such as a manicure, and a writing implement such as a ballpoint pen. Of course, such an applicator is limited to the type in which the coating liquid storage chamber is pressurized, but the mechanism for controlling the supply amount of the coating liquid supplied by this pressure is not necessarily the one described above. The mechanism is not limited to this, and any structure having a check valve function that allows pressurized air from the outside to be supplied into the coating liquid storage chamber can be used. The invention can be applied.

[0030]

According to the present invention, when the cap is attached or detached, the air in the cap is compressed and replenished in the coating liquid storage chamber, so that the pressure in the liquid storage chamber is always maintained at a predetermined pressure. You can Moreover, since the compression ratio of the air compressed at the time of fitting the cap is constant, the pressure of the supplied air is constant, and the pressure in the coating liquid storage chamber is accurately maintained at a predetermined pressure. Can be kept. Moreover, the pressure of the pressurized air to be supplied can be set to an arbitrary pressure by appropriately setting the volume in the cap and the like. Therefore, the supply amount of the coating liquid supplied from the coating liquid storage chamber can be controlled extremely accurately. Further, the structure of the present invention has a simple structure, is highly reliable, and can reduce the cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an applicator according to a first embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view showing a main part of a coating body of the first embodiment.

FIG. 3 is a vertical cross-sectional view corresponding to FIG. 2 in a state where a ball is pressed against a coating surface.

FIG. 4 is a longitudinal sectional view corresponding to FIG. 2 in a state where a ball is rolling.

FIG. 5 is a vertical sectional view of a cap portion of the first embodiment.

FIG. 6 is a vertical sectional view corresponding to FIG. 5 in a state where the cap is completely fitted.

FIG. 7 is a vertical sectional view of a cap portion of a second embodiment.

[Explanation of symbols]

 2 ... Cap 3 ... Coating liquid storage chamber 4 ... Coating liquid 10 ... Coating body 11 ... Holder 12 ... Ball 16 ... Supply port 17 ... Ball holding part 18 ... Ball seating surface 21 ... Piston part 23 ... Cylinder part 31 ... Bellows

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65D 47/44 D

Claims (3)

[Claims] 1. A coating liquid storage chamber for storing the coating liquid, and a coating body communicating with the coating liquid storage chamber for coating the coating liquid on a predetermined portion of the coating surface. The coating body has a valve mechanism. This valve mechanism acts as a check valve that allows only the flow of fluid from the outside to the inside, and at the time of writing, this valve mechanism is opened by the writing pressure to remove the fluid from the coating liquid storage chamber. It is capable of supplying the coating liquid to the applicator, and is equipped with a cap that fits with the above-mentioned applicator, and this cap is pressurized by the air inside when the cap is fitted. A pressurizing device for an applicator, comprising a pressurizing mechanism for press-fitting into the above-mentioned coating liquid storage chamber via the mechanism. 2. The pressurizing mechanism includes a cylindrical piston portion formed on the outer peripheral surface of the application body, and a cylinder portion formed on the cap, and the cylinder portion includes the piston. Which is slidably fitted in the axial direction in an airtight manner, and when the cap is fitted, the air in the cap is compressed and press-fitted into the coating liquid reservoir chamber through the valve mechanism. The pressurizing device for the applicator according to claim 1, wherein 3. The pressing mechanism is provided with an axially compressible bellows provided in the cap, and an end portion of the bellows is attached to the applicator body when the cap is fitted. The coating according to claim 1, wherein the coating is airtight and compressed in the axial direction, and the air in the bellows is compressed and press-fitted into the coating liquid storage chamber through the coating body. Pressurizing device.