WO1997035778A1

WO1997035778A1 - Fluid dispenser

Info

Publication number: WO1997035778A1
Application number: PCT/JP1997/000970
Authority: WO
Inventors: Hideyuki Usami
Original assignee: Pentel Kabushiki Kaisha
Priority date: 1996-03-27
Filing date: 1997-03-24
Publication date: 1997-10-02
Also published as: EP0829431A4; EP0829431A1

Abstract

A fluid dispenser comprising a variable-volume container (1) storing a liquid, and a valve rod (4) having in an opening at a tip end of the container (1) a valve seat portion (3a) and a first valve portion (8a) adapted to resiliently abut against the valve seat portion (3a), said valve rod (4) extending rearward in the container (1) so as to push a rear end of the container (1) to thereby advance the valve rod (4) and deform the container, thereby opening a valve to permit the liquid to be discharged. A second valve portion (9a) for closing the valve upon advancement of the valve rod (4) is provided intermediate the valve rod.

Description

Satsuki Itoda

Fluid discharge device technology field

TECHNICAL FIELD The present invention relates to a fluid ejection device that accommodates a liquid in a container and has a discharge port at the tip of the container, or has an application body attached to the discharge port. Here, liquids (fluids) include black ink, paint, ink and other writing liquids, eye liners, lip colors, nail polish and other cosmetic liquids, liquid seasonings, machine oils, cleaning liquids, etc. Can be exemplified. Background technology

As a fluid discharger, for example, there is a fluid discharger described in Japanese Utility Model Laid-Open No. 2-113239 by the present applicant. Its contents consist of a valve that accommodates liquid in a container that changes in volume to decrease and recover, and that has a valve seat at the opening at the tip of the container and a valve rod that resiliently contacts the valve seat. The valve is disposed as a stopper, and the valve rod is extended backward into the container, and the pressure is applied to the rear end of the container to deform the container and to advance the valve rod together with the valve. A liquid ejection device which is configured to discharge liquid by being opened, wherein a rear part of the container is supported by an exterior body having a contact wall for limiting volume recovery of the container, and a contact of the exterior body is provided. At the time of support by the contact wall, a small space is formed between the rear end of the valve rod and the inner wall of the container rear end.

In the above prior art, unnecessary liquid leakage hardly occurs. Although it has the advantage of enabling stable liquid ejection, there is still room for improvement.

That is, the problem is not caused by the normal pressing operation, but is caused by the continuation of the pressing operation of the knock body. If the knocking body is kept pressed, the valve will continue to be open, resulting in excessive liquid flowing out to the application body. Eventually, it will fall down from the applied material. Here, a porous body is provided at the rear of the applied body to prevent dripping due to excessive ink outflow, but the liquid storage capacity is limited.

Therefore, an object of the present invention is to provide a liquid ejection device that does not drop even if the pressing operation is continued.

Also, recently, low-priced products have become desired by consumers, and it is a second object of the present invention to provide low-priced products. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a liquid is accommodated in a container having a volume that decreases and recovers. A valve rod having a first valve portion that resiliently contacts the valve rod is provided, and the valve rod extends to the rear inside the container and presses the rear end of the container. Thus, the valve rod is advanced and the container is deformed, whereby the valve is opened to discharge the liquid, and the valve is disposed at an intermediate portion of the valve perspiration. A second valve portion is provided for closing the valve by advancing the rod. In the second aspect of the present invention, in the second aspect of the present invention, a liquid is accommodated in a container having a volume that decreases and recovers, and an application body is provided at the tip of the container. Is a fluid discharge device formed integrally with a part of the container, wherein the thickness of the meat at the bellows portion is formed to be smaller than the thickness of the meat other than the bellows portion.

In a third aspect of the present invention, there is provided a fluid ejection device comprising a brush attached to a tip of a container, the brush being formed by converging fibers, wherein the brush is attached to the container via a fixed tube, and Is composed of a fixed tube side divided into two in the vertical direction, and one end of each fixed tube side is connected to a base so as to be refractible, and the base has the above-mentioned brush. The cylindrical part inserted into the ear is formed integrally. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a longitudinal sectional view of a fluid ejection device according to a first embodiment of the present invention. Fig. 2 is a sectional view taken along the line A-A in Fig. 1.

Fig. 3 is an enlarged view of the main part of Fig. 1.

Fig. 4 is an enlarged view of the main part of Fig. 1 during operation.

FIG. 5 is a longitudinal sectional view showing a second embodiment of the present invention.

Figure 6 is an external view of Figure 5.

FIG. 7 is a longitudinal sectional view showing a third embodiment of the present invention.

Fig. 8 is an enlarged view of part B of Fig. 7.

FIG. 9 is an enlarged view showing a modified example of FIG.

Fig. 10 is a cross-sectional view taken along the line C-C in Fig. 7.

Fig. 11 is a front view showing a brush head fixing tube to which the brush head is fixed. Fig. 12 is an exploded perspective view of the brush head fixing tube shown in Fig. 11.

FIG. 13 is an enlarged view showing the cap of FIG.

FIG. 14 is a longitudinal sectional view of a main part showing a state in which a crown is attached.

FIG. 15 is an enlarged view of a portion D in FIG.

FIG. 16 is a longitudinal sectional view showing a fourth embodiment of the present invention.

FIG. 17 is a longitudinal sectional view of a main part showing a fifth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 shows an example. It is a nail power line with a container that stores the snow. Reference numeral 1 denotes a container, and a bellows portion 2 having self-elasticity obtained by blow molding of polyethylene, polypropylene, nylon, ethylene vinyl alcohol, or the like is used to center the container. It has in the part. A valve seat member 3 is press-fitted and fixed to the front end opening of the container 1. Note that the valve seat member 3 can be integrated with the container 1. The valve seat member 3 is constantly urged rearward by a repelling member 5 such as a coil spring stretched between the valve seat 4 and the rear end of the valve seat member 3. I have. Here, the repelling member 5 can be arranged in front of the valve rod 4. Further, the valve rod 4 or the valve seat member 3 may be integrally formed as appropriate. The valve rod 4 extends inside the container 1, and forms a small space 6 at the rear end with the inner wall of the rear end of the container 1. The rear end of the container 1 is a knock body 7.

The valve seat member 3 has a reduced diameter portion 3a formed substantially at an intermediate portion, and the reduced diameter portion 3a serves as a valve seat portion (3a).

Further, the valve rod 4 includes two parts, a first valve rod 8 and a second valve rod 9. The first valve rod 8a is made of a material, and a distal end of the first valve rod 8 contacts the front end face of the valve seat 3a to close the valve hole 3b. Are formed. On the other hand, a second valve portion 9a is formed at the tip of the second valve rod 9 to abut the rear end surface of the valve seat portion 3a and close the valve hole 3b. In this example, the second valve rod 9 a was formed by making the diameter of the second valve rod 9 larger than the diameter of the first valve rod 8. The first valve rod 8 and the second valve rod 9 may be integrally formed, and the first valve portion and the second valve portion may be formed as large diameter portions.

At the tip of the container 1, a brush 10 formed by converging the fibers is projected, and a brush holding the porous body 11 serving as a temporary liquid reservoir in the coated brush 10 is fixed. The pipe 12 is attached by appropriate means such as press-fitting, screwing, and bonding. In addition, the brush ear 10 and the porous body 11 are communicated with each other by a cylindrical body 13 to improve the flowability of the liquid to the brush head 10 at the beginning of use.

Reference numeral 14 denotes an air exchange slit formed in the valve seat member 3, and air flows from the air exchange slit 14 into the space of the porous body 11. Selects a relatively large and weak capillary force and penetrates into container 1.

Reference numeral 15 denotes an exterior body, which is formed so as to substantially cover the entire container 1. At the rear end of the exterior body 15, a stopper ring 16 for exposing about half of the knock body 7 of the container 1 is attached by press fitting or the like. The knock body 7 is exposed by forming a notch 16 a in the stopper ring 16. The reason for the half exposure was that This is to prevent unnecessary pressing operation due to unexpected external force.

In addition, the stopper ring 16 forms the inner peripheral projection 16b, thereby preventing the container from falling off from the exterior body o.

Reference numeral 17 denotes a cap, which is detachably attached to the tip of the container 1 by screwing, but may be a concave-convex fitting, or may be simply press-fitted. It may be appropriate. Next, usage and operation will be described. When the knocking body 7 of the container 1 is pressed from the state shown in FIGS. 1 and 3, the bellows portion 2 contracts, and the inside of the container 1 is pressurized. The inner surface of 7 comes into contact with the top of valve rod 3. Here, when the pressing operation is further continued, the first valve member 8a is separated from the front end face of the valve seat portion 3a, and the valve hole 3b is formed. Then, the liquid in the pressurized container 1 flows out and is supplied to the porous body 11 and the brush ear 10.

In this state, when further pressed, the second valve portion 9a comes into contact with the rear end face of the valve seat portion 3a to close the valve hole 3b (see FIG. 4). In this way, the liquid in the pressurized container 1 flows out to the porous body 11 or the like, and the supply line is blocked.

In this example, the valve is opened by performing the pressing operation, and the liquid in the container is pressurized, so that even a liquid having a relatively high viscosity can be easily used. Can be discharged.

FIGS. 5 and 6 show a second embodiment. In this example, the valve is opened and the inside of the container is pressurized by pressing the side surface of the exterior body 18 corresponding to the exterior body 15 in the first embodiment shown in FIG. 1 in the radial direction. is there. A U-shaped slit 19 is formed at the front of the exterior body 18. Thus, the pressing pieces 20 are provided at positions facing each other. The pressing piece 20 is formed with a protruding piece 21 so that it can contact the front shoulder 22 of the container 1. Further, unlike the above example, the rear end of the exterior body 18 is closed by a tail plug 23, and the tail plug 23 prevents the container 1 from moving backward. ing.

Next, usage and operation will be described. When the pressing piece 20 of the exterior body 18 is pressed in the radial direction, the protruding piece 21 presses the front shoulder 22 of the container 1. The bellows portion 2 is contracted by this pressing operation, and the portion in front of the bellows portion 2 is retracted (downward in the figure). Then, by this retreating operation, the inside of the container 1 is pressurized, and the valve rod 4 is relatively pressed, so that the first valve portion 8a is displaced from the valve seat portion 3a. The valve hole 3b is formed. This is because the backward movement of the valve rod 4 is prevented by the rear end of the container 1 and the tail plug 23. In here, further presses the pressing piece 2 0, as in the example, _c of the second valve portion 9 a is occupied thereby close the contact valve hole 3 b to the rear end surface of the valve seat portion 3 a

Since the tip of the protruding piece 21 and the front shoulder 22 have an inclined surface, the container 1 is easily moved rearward by the pressing operation of the pressing piece 20. .

Also, in this embodiment, as in the first embodiment, a space 6 is formed between the rear end of the valve rod 4 and the inner surface of the rear end of the container 1, so that an accidental pressing operation Prevents valve opening.

A _third embodiment of the present invention will be described with reference to FIG. This is an invention aimed at reducing the price of products. Reference numeral 24 denotes polyethylene, A container body formed by blow molding of a polypropylene, nylon, ethylene / vinyl alcohol copolymer or the like, and the container body 24 is provided behind the container body. An abdominal portion 25 having self-elasticity and capable of contracting and extending in the longitudinal direction of the container body 24 is formed. Further, a bottom portion 26 is formed behind the bellows portion 25 to serve as a pressing portion 27. The center of the bottom part 26 is a concave part 28 toward the inside of the container body 1, but the parting line generated during molding does not protrude from the surface of the bottom part 26. This is the means that has been adopted.

Further, the container body 24, the belly portion 25, and the pressing portion 27 will be described in detail. The thickness of the bellows portion 25 is the thickness of the container body 24 and the pressing portion 27. It is formed thinner than the thickness. By making the thickness of the bellows portion 25 thin, the deformation of the bellows portion is facilitated, while the thickness of the container body 24 and the pressing portion 27 is made thicker. Thus, unnecessary deformation of the container body and the pressing portion was prevented. In other words, the deformation of the container body during use was prevented by increasing the thickness of the container body. Further, when the bellows part 25 is described in more detail, the thickness of the side part 25a and the outer top part 25b of the bellows part 25 is formed to be thin, but the inner top part is formed. The thickness of the wall of 25c is formed thick. By making the outer apex 25b easier to deform, the inner apex 25c is made rigid, thereby improving the resilience in contraction and extension (see Fig. 8). However, as shown in FIG. 9, even if the thickness of the side part 25 a of the bellows part 25 and the outer top part 25 b and the inner top part 25 c is formed with a constant thickness. good. Contraction / extension Long-term stress spreads uniformly over the entire abdomen, preventing damage (eg, cracks in the abdomen) over a long period of time.

A valve seat member 31 to which a (fixed) brush fixing tube 30 having a brush 29 is press-fitted and fixed is attached to a tip opening of the container body 25. The seat member 31 may be integral with the container body 24. A valve seat portion 31 a is formed inside the valve seat member 31. The valve rod 32 is stretched between the valve seat 31a (valve seat member 31) and the rear end of the valve seat 3la (valve seat member 31). It is constantly urged rearward by a repelling member 33 such as a coil spring. However, the repelling member 33 may be disposed in front of the valve rod 32, or may be appropriately integrated with the valve rod 32 or the valve seat member 31. In this case, if the bellows portion 25 has sufficient paneling properties (elastic effect), it may be omitted.

The valve rod 32 extends inside the container main body 24, and the rear end thereof has a small space 3 between the inner wall of the rear end of the container main body 24 (inside the concave portion 28 of the pressing portion 27). 4 is formed.

Further, the valve rod 32 is composed of two members, a first valve rod 35 and a hollow second valve rod 36, and a tip end of the first valve rod 35 is provided with: A first valve portion 35a is formed which is in contact with the front end surface of the valve seat portion 31a and closes the valve hole 31b. On the other hand, at the tip of the second valve rod 36, a second valve portion 36a is formed, which abuts against the rear end face of the valve seat portion 31a to close the valve hole 31b. .

At the position of the bellows part 25 behind the valve rod 32, a steadying ring 37 for preventing the valve rod 32 from swinging is interposed. A longitudinal groove 38 is formed in the steady rest ring 37 in order to improve the flow of the liquid (see FIG. 10). However, the force for stirring the cosmetic liquid in the container 24 <<Depending on the liquid used, it is not always necessary. Further, a porous body 40 serving as a temporary liquid reservoir for the brush head 29 is disposed at the lower end of the brush head fixing tube 30 at an intermediate portion inside the valve seat member 31.

Next, the brush ear fixing tube 30 will be described in detail. As shown in FIGS. 11 and 12, the brush fixing tube 30 is composed of fixed tube sides 40 and 41 obtained by dividing the brush fixing tube 30 into two parts in the vertical direction. One end of each of the fixed sides 40, 41 is connected to bendable via a circular base 42. At the center of the base 42, a tubular pipe 43 inserted into the brush ear 29 is integrally formed upright. The cost of parts can be reduced by integrally forming the brush head fixing tube and the cylindrical pipe, and the attachment of the brush head to the fixed tube is easy by dividing the fixing tube into two parts. It was decided. Of course, facilitating assembly also lowers production costs.

An air exchange slit 44 and a rear end welded portion 29a of the brush ear 29 are locked and fixed to the inner surface of each fixed pipe side 40, 41. Grooves 45 are formed. Further, an air exchange slit 46 is formed at a position facing the side surface of the base 42.

When the fixed tube sides 40, 41 are bent to form the brush head fixed tube 30, as shown in FIG. An air exchange slit 47 is formed.

In FIG. 13, reference numeral 48 denotes a cap that is detachably attached to the container main body 24 by a screw structure, and the cap 48 includes a plurality of ribs 49. The double caps (outer cap 50, inner cap 51) are connected by means of. The double cap ensures air circulation even if a child swallows it. Note that a groove 52 is formed circumferentially inside the outer cap 50. As shown in Fig. 14, it was possible to wear a crown 53. By inserting the crown 53, the upper hole of the cap 48 is closed, and the product has a good appearance.

Also, as shown in FIG. 15, a groove 55 is formed in the center of the screw portion 54 of the cap 48 along the screw portion spiral. Sinking that occurs during injection molding of the cap (immediately after molding, the thicker part causes volume shrinkage and dents on the surface) and prevents the cap itself from loosening It is a means made for. Next, usage and operation will be described. When the pressing portion 27 of the container body 24 is pressed, the bellows portion 25 contracts and the inside of the container body 24 is pressurized, and the inner surface (the concave portion 28) of the pressing portion 27 is eventually formed. It comes into contact with the rear end of the valve rod 32. Here, if the pressing operation is further continued, the first valve portion 35a is separated from the front end face of the valve seat portion 3la, and the valve hole 31b is formed. Then, the liquid in the pressurized container body 24 flows out and is supplied to the porous body 40 and the brush ear 29.

In this state, when further pressed, the second valve portion 36a comes into contact with the rear end face of the valve seat portion 31a to close the valve hole 31b. This Thus, the liquid in the pressurized container body 24 is prevented from flowing out and supplied to the porous body 40 and the like.

In the example shown in FIG. 16, a high quality bag body 57 that is gradually shrunk according to the use of a liquid (cosmetic liquid) is provided inside the container body 56. Bag for storing liquid 5 7 Force Shrinks due to the decrease in liquid, so that not only air but also other bacteria contained in air are not mixed into the liquid, making it extremely sanitary. Drying is also prevented

The example shown in FIG. 17 is an example in which a comb tooth-shaped application destination 58 is attached instead of the brush of the fiber converging body of the previous example. It is mainly used as a hair dye. As described above, various objects can be attached to the application destination.

According to the present invention, a liquid is accommodated in a container having a small volume change, and a valve seat portion and a valve portion resiliently abutting against the valve seat portion are formed in an opening at the front end of the container. A valve rod is provided, and the valve extends to the rear in the container, and presses the rear end of the container, thereby preventing the valve rod from advancing and deforming the container. However, a liquid discharging device for opening a valve and discharging a liquid thereby, wherein the valve is closed at an intermediate portion of the valve by advancing a valve rod. This is the configuration provided with the second valve section. Further, in the second embodiment of the present invention, a liquid is accommodated in a container which changes in volume for reduction and recovery, an application body is provided at the tip of the container, and the container contracts and extends back and forth with respect to the container. A fluid discharging device in which a possible bellows portion is formed integrally with a part of the container, wherein the thickness of the flesh of the bellows portion is formed to be thinner than the thickness of the meat other than the bellows portion. Further, the third aspect of the present invention In the aspect of the present invention, a fluid ejection device having a brush formed by converging fibers attached to the tip of a container, the brush being attached to the container via a fixed tube, and the fixed tube being vertically attached The fixed pipe side is divided into two parts in the direction, and one end of each fixed pipe side is connected at the base part so as to be bendable. It has a configuration in which the tubular part inserted into the ear is integrally formed. With the above configuration, it is possible to prevent the liquid from dripping even if the forward (pressing) operation of the valve rod is continued. Further, by adopting the second or third aspect, an inexpensive product can be provided.

Claims

The scope of the claims

1. Liquid is stored in a container that changes in volume during recovery and recovery, and a valve seat portion and a first valve portion that resiliently contacts the valve seat portion are formed in the opening at the tip of the container. The valve rod extends to the rear inside the container and presses the rear end of the container, whereby the valve rod is advanced and the container is deformed. A liquid ejecting tool for opening the valve and ejecting the liquid, thereby closing the valve at the intermediate portion of the valve rod by advancing the valve rod. A fluid ejection device provided with a second valve portion.

2. Liquid is stored in a container that changes in volume during reduction and recovery, and an application body is provided at the tip of the container, and a bellows portion that can contract and extend back and forth with respect to the container is provided in a part of the container. A fluid discharging device integrally formed, wherein the thickness of the flesh of the bellows portion is formed thinner than the thickness of the flesh other than the bellows portion.

3. A fluid discharge device having a brush attached to a fiber at the end of a container, the brush being attached to the container via a fixed tube, and the fixed tube being vertically moved. It is composed of two divided fixed sides, and one end of each fixed side is connected to the base so as to be refractible, and the base is attached to the brush head. Fluid ejector with integrated cylindrical part inserted.