JP3467708B2 - Applicator - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to applicators. More specifically, the present invention relates to an applicator including a container that contains a coating liquid and has a discharge port at its tip, an application body that is biased forward to open and close the discharge port, and a cap that seals the discharge port.

[0002]

2. Description of the Related Art Conventionally, in this type of applicator, Japanese Patent Laid-Open No.
JP-A-58090 discloses that the air in the cap is pressurized when the cap is fitted, and the pressurized air is applied through the applicator to the application liquid storage chamber. A structure in which a pressurizing mechanism for press-fitting into the applicator and the cap is provided "is disclosed. Specifically, "a piston part is formed on the applicator side and a cylinder part is formed on the cap side so that the piston part and the cylinder part are fitted slidably in an airtight manner." A bellows which is compressible in the direction, and the end portion of the bellows adheres to the application body in an airtight manner.

However, in the structure of Japanese Patent Laid-Open No. 5-58090, the air in the cap is pressurized, and the valve mechanism of the applicator body is opened by the pressurized air, and the pressurized air is introduced into the coating liquid storage chamber. In order to press-fit, the sliding stroke between the piston part and the cylinder part, or the axial compression stroke of the bellows must be long, strong force is required to attach the cap, and smooth cap attachment is possible. There wasn't. That is, since the pressurizing mechanism uses the fitting force when the cap is mounted, the original cap mountability is impaired.

[0004]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned problems, in which air is taken into the container to increase the pressure in the container, and the coating liquid is stably discharged by the pressure. In addition, the present invention intends to provide an applicator which has good cap wearability.

[0005]

The present invention is provided with a container 2 for containing a coating liquid and having a discharge port 41 at its tip, and a coating body 43 which is biased forward to open and close the discharge port 41 .
An applicator comprising an applicator main body 1 and a cap 5 attached to the applicator main body 1 for sealing the discharge port 41, wherein a pressure device 6 is provided on the cap 5, and the cap 5 is attached to the applicator main body 1. After mounting, put on the cap 5 and the applicator body 1.
Therefore, the closed space 53 is formed, and by the closed space 53,
The discharge port 41 is sealed, and the pressurizing device 6 moves axially rearward.
By external operation, which consists of pressing inward or pinching inward in the radial direction.
Therefore, the volume variable portion 7 that reduces the volume of the closed space 53
The pressurizing device 6 is operated by the external operation.
Wherein the sealed space 53 is pressurized, and configured to be capable of incorporating the air from the discharge port 41 in the container 2 is operated Te, the
The mounting of the cap 5 and the operation of the pressurizing device 6 cannot be performed at the same time.
In addition, the requirement is that it is configured to be performed independently .

[0006]

More specifically, the variable volume section 7 is
A cylinder portion 71 provided in the cap 5, a piston portion 72 that closely slides with the cylinder portion 71, and the piston portion 7
The elastic body 73 for urging the forward portion 2 and the operating portion 8 that is connected to the piston portion 72 and is exposed to the outside and moves the piston portion 72 backward, or the volume varying portion 7 is It is effective to use a configuration including an elastic member 85 that is deformable in the axial direction or the radial direction and has a self-restoring force.

[0008]

When the cap 5 is attached to the applicator body 1, the cap 5 and the applicator body 1 form a closed space 53, and the discharge port 41 is closed. Then, when the pressurizing device 6 is operated, the air in the closed space 53 is pressurized. The pressurized air moves the application body 43, which is biased forward in advance, to the rear, and slightly opens the discharge port 41. At the same time, the pressurized air enters through the discharge port 41 and is taken into the container 2 to increase the pressure inside the container 2. Due to the pressure, the coating liquid in the container 2 is discharged from the discharge port 41.
More stable supply is possible.

Further, the mounting of the cap 5 and the operation of the pressurizing device 6 are not performed at the same time but independently, and a long fitting stroke is set as in the conventional case, and a great amount of force is required when mounting the cap 5. As there is no cap, the cap can be installed smoothly.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment. Container 2
A coating liquid (here, a highly viscous coating liquid such as a typographical error correction liquid) and a stirring ball 21 are contained. A neck member 3 is screwed into the opening at the tip of the container 2. A thin tube 4 made of stainless steel is fixed to the tip of the neck member 3, and an applicator 43 (ball) is rotatably held at the tip of the thin tube 4. The coating body 43 is the thin tube 4
The ejection port 41 is slightly projected from the tip end ejection port 41 and is in close contact with the inner wall of the ejection port 41 to close the ejection port 41. Further, behind the coating body 43, there is formed a ball seat 44 composed of inward projections (four pieces) formed by pressing and deforming the side wall of the thin tube 4 inward in the radial direction. Furthermore, thin tube 4
A liquid passage 42 communicating with the inside of the container 2 is formed behind the coating body 43 inside.

A spring seat member 9 is attached to the inner wall of the neck member 3 and the inner wall of the container 2. In front of the spring seat member 9 in the neck member 3, a spring body 91 having a linear portion 92 extending forward is arranged, and a pendulum 93 is slidably inserted around the linear portion 92. Has been done. Further, the linear portion 92 of the spring body 91 is inserted into the liquid passage 42 from the rear side, and the tip end thereof is brought into contact with the rear portion of the coating body 43 to urge the coating body 43 forward.

The cap 5 comprises a small diameter portion 51 and a large diameter portion 52. An annular protrusion 51a for press-fitting and fitting with the outer wall of the neck member 3 to maintain airtightness is provided on the inner wall of the rear portion of the small diameter portion 51, and an inner wall of the large diameter portion 52 rides over the annular protrusion 31 of the outer wall of the neck member 3. Protrusion 52 for fitting and preventing cap 5 from coming off
a is provided. A cylinder portion 71 is formed on the inner wall of the front portion of the small diameter portion 51, and a piston portion 72 that is slidably close to the inner wall of the cylinder portion 71 is arranged inside the cylinder portion 71.

An operating portion 8 is connected in front of the piston portion 72. The operation portion 8 is the piston portion 72.
It is composed of a rod-shaped portion 81 that is inserted into and attached to the rod-shaped portion 81, and a brim portion 84 that is connected to the tip of the rod-shaped portion 81. The collar portion 84 is exposed to the outside from the tip of the cap 5. Further, in the space between the small diameter portion 51 and the large diameter portion 52 of the cap 5, the elastic body 73 is
A (coil spring) is housed therein and urges the collar portion 84 forward.

The piston portion 72 is provided with two annular close contact portions 72a on the outer periphery of the front portion and a recess 72b on the rear portion.
Is provided and is integrally formed of an elastic body. The recess 72b can accommodate the tip of the thin tube 4 and the tip of the neck member 3, and when the piston portion 72 is moved rearward by externally operating the operating portion 8 (here, pressing operation),
The inner wall of the concave portion 72b can remove the coating liquid adhering to the vicinity of the coating body 43.

The operation of this embodiment will be described. Applicator body 1
When the operating portion 8 is pushed axially rearward after the cap 5 is attached to the piston 5, the piston portion 72 slides in close contact with the cylinder portion 71, and the closed space 53 accommodating the discharge port 41 is pressurized. The pressurized air in the closed space 53 is preliminarily stored in the spring body 91.
The application body 43, which has been urged forward, is moved backward to open the discharge port 41 slightly. At the same time, the pressurized air enters through the discharge port 41, passes through the liquid passage 42, is taken into the container 2, and the pressure in the container 2 rises. Due to the increased pressure, the coating liquid in the container 2 is stably discharged from the discharge port 41.

Further, even if the coating liquid is solidified and clogged in the liquid passage 42 due to the pressurized air passing through the liquid passage 42, the solidified coating liquid is returned to the rear container 2 and stirred again. To be done. As a result, even if the liquid passage 42 is clogged with the solidified coating liquid, it can be easily recovered, and the coating liquid can always be smoothly circulated in the liquid passage 42.

Thereafter, when the pressing operation is released, the piston portion 72 is biased forward by the elastic body 73, so that the sealed space 53 is slightly decompressed. However, at this time, since the discharge port 41 is closed by the application body 43, the closed space 53 is maintained in a depressurized state, and the piston portion 72 is not returned to the front. As a result, the external operation after mounting the cap 5 can be performed only once, so that it is possible to prevent the pressurized air from being excessively taken into the container 2.

FIG. 3 shows a second embodiment. Cap 5
Similar to the first embodiment, it has a small diameter portion 51 and a large diameter portion 52. When the cap 5 is attached to the applicator main body 1, the rear inner wall of the small diameter portion 51 is in close contact with the outer peripheral wall of the neck member 3 to maintain airtightness, and the rear inner wall of the large diameter portion 52 is surface-fitted to the outer wall of the neck member 3. To do. A cylinder portion 71 is formed on the inner wall of the front portion of the small diameter portion 51 as in the first embodiment. Inside the cylinder portion 71, a piston portion 72 made of an elastic body is provided.
It is closely attached to the inner wall of the cylinder portion 71 and is slidable in the axial direction. A pressing body 72d is integrally provided at the rear end of the piston portion 72 so as to project. When the piston 72 is moved rearward, the pressing body 72d presses the coating body 43 rearward and assists the opening operation of the discharge port 41.

An operating portion 8 is connected to the front of the piston portion 72. The operation portion 8 includes a rod-shaped portion 81 inserted into the piston portion 72, a top portion 82 continuous with the rod-shaped portion 81, and a tubular portion 83 continuous with the top portion 82 and covering the outer periphery of the cap 5. It is formed integrally. A non-slip convex portion 83a is provided at the rear end of the tubular portion 83, and the top portion 82 of the operating portion 8 is pressed or the tubular portion 83 (slip of the operating portion 8) (Near the stop projection 83a)
Is clamped in the radial direction from the outside and moved rearward.

The rod-shaped portion 8 is provided at the front of the small diameter portion 51.
A locking wall 51b having one hole that can be inserted is provided. An elastic body 73 is interposed between the front surface of the locking wall 51b and the top portion 82 of the operating portion 8, and the locking wall 51b is provided.
The rear surface of the b serves as a stopper that stops against the piston portion 72. In this embodiment, the applicator main body 1 is similar to that of the first embodiment, and its function and effect are also similar to those of the first embodiment.

FIG. 4 shows a third embodiment. A neck member 3 is screwed into the tip opening of the container 2, and a thin tube 4 having a discharge port 41 at the tip is fixed to the tip of the neck member 3. A liquid passage 42 is formed in the thin tube 4, and an applicator 43 (bar-shaped valve body) is housed in the thin tube 4.
3 is biased forward by a spring body 91.

On the rear inner wall of the small diameter portion 51 of the cap 5,
An annular protrusion 51a that is airtightly fitted to the outer peripheral surface of the neck member 3 is provided, while a female screw portion 55 that is screwed with the male screw portion 32 on the outer periphery of the neck member 3 is provided on the rear inner wall of the large diameter portion 52. . Further, a ventilation hole 57 is provided in the connecting portion between the large diameter portion 52 and the small diameter portion 51.

Further, a bellows-like elastic member 85 is attached to the front portion of the small diameter portion 51 so as to be expandable and contractible in the axial direction. The outer periphery of the elastic member 85 is covered by a semi-cylindrical cover portion 56 that is continuous with the large diameter portion 52 of the cap 5.
This prevents inadvertent pressing. After the cap 5 is attached, the closed space 53 in the small diameter portion 51 is pressurized by pressing the tip end wall of the elastic member 85 axially rearward. Since the closed space 53 after the pressing operation is in a reduced pressure state, the elastic member 85 remains contracted,
When the cap 5 is removed from the applicator body 1, the elastic member 8
5 stretches back to its original shape by the self-restoring force.
The rest of the configuration and operational effects are similar to those of the first and second embodiments.

FIG. 5 shows a fourth embodiment. A seal member 54 formed of an annular elastic body is fixed in the cap 5. The shoulder portion of the neck member 3 axially contacts the rear tapered surface of the sealing member 54 to maintain airtightness, and a sealed space 53 is formed in front of it. In addition, the seal member 5
A dropper-shaped elastic member 85 having a self-restoring force is connected to the elastic member 4, and the elastic member 85 is projected from the tip end surface of the cap 5 to the outside. At the time of external operation, the closed space 53 is pressurized by pressing the elastic member 85 inward in the radial direction. In this embodiment, the applicator main body 1 is similar to that of the third embodiment, and its operation and effect are also similar to those of the other embodiments.

FIG. 6 shows a fifth embodiment. Similar to the first embodiment, the cylinder portion 7 is provided on the front inner wall of the small diameter portion 51 of the cap 5.
1, and the cylinder portion 71 is provided in the cylinder portion 71.
A piston portion 72 is disposed on the inner wall so as to be capable of sliding closely.

In front of the piston portion 72, the operating portion 8 is continuously provided, and the outer peripheral surface of the piston portion 72 is provided with an annular contact portion 72a made of an elastic body. further,
A hole is provided in the rear end surface of the piston portion 72, and a minute elastic body 72c (coil spring) is attached to the hole. A pressing body 72d capable of contacting the tip of the coating body 43 is attached to the rear end of the minute elastic body 72c. When the piston portion 72 is moved rearward to pressurize the closed space 53, the pressing body 72d moves the coating body 43 rearward and forcibly opens the discharge port 41.
Pressurized air can be easily flowed in from 1. The elastic force of the minute elastic body 72c is set to be larger than that of the spring body 91 that biases the application body 43 forward. Further, the minute elastic body 72c and the pressing body 72d may be formed of an elastic material such as rubber. In this embodiment, the applicator body 1
Is the same as that of the first embodiment, and the effects are the same as those of the other embodiments.

FIG. 7 shows a sixth embodiment. Piston 72
Is made of an elastic material, and an annular thin-walled piece 72e is provided at the rear end thereof so as to expand rearward, and the annular thin-walled piece 72e is configured to closely slide with the cylinder portion 71. Further, the tip end surface of the piston portion 72 is in close contact with the rear end surface of the locking wall 51b at the tip of the small diameter portion 51 when the piston portion 72 is not actuated to maintain the airtightness of the sealed space 53.

When the piston portion 72 is moved rearward and the closed space 53 is put into a pressurized state, the annular thin piece 72e.
Spread radially outwardly and come into close contact with the inner wall of the cylinder portion 71. On the other hand, when the piston portion 72 is moved forward and the closed space 53 is momentarily depressurized, the annular thin piece 72e.
Is deformed inward in the radial direction to separate from the inner wall of the cylinder portion 71, and air is sucked into the sealed space 53 from the front of the piston portion 72. That is, in this embodiment, the piston 72 is provided with a check valve. Thereby, the piston part 72 can be operated any number of times with the cap 5 attached to the applicator body 1. Other configurations and operations are similar to those of the first embodiment.

[0030]

The applicator of the present invention having the above-mentioned structure can operate the pressurizing device to increase the pressure in the container and stably supply the coating liquid from the discharge port by the pressure. Thus, it is possible to provide an applicator having a good wearability of the cap.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of FIG. 1 after an external operation.

FIG. 3 is a longitudinal sectional view of a main part of a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a main part of a third embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of an essential part of a fourth embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a main part of a fifth embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of an essential part of a sixth embodiment of the present invention.

[Explanation of symbols]

1 Applicator body 2 containers 21 stirring balls 3 neck members 31 annular protrusion 32 Male thread 4 thin tubes 41 outlet 42 liquid passage 43 Applicator 44 ball seat 5 caps 51 Small diameter part 51a annular protrusion 51b Locking wall 52 Large diameter part 52a protrusion 53 enclosed space 54 Seal member 55 Female thread 56 Cover 57 Vent 6 Pressurizing device 7 Volume variable part 71 Cylinder part 72 Piston part 72a annular close contact part 72b recess 72c Micro bullet 72d pressing body 72e Annular thin-walled piece 73 bullets 8 operation part 81 Bar 82 Top 83 Cylindrical part 83a Anti-slip protrusion 84 Tsubabe 85 Elastic member 9 Spring seat member 91 spring body 92 Straight section 93 Pendulum

─────────────────────────────────────────────────── ─── Continued Front Page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B05C 17/01 B43K 8/02 B43L 19/00 B65D 47/44 B65D 83/00

Claims (3)

(57) [Claims] 1. An applicator main body 1 comprising a container 2 containing a coating liquid and having a discharge port 41 at its tip, and a coating body 43 which is biased forward to open and close the discharge port 41, and the coating. Ingredient
An applicator including a cap 5 attached to the main body 1 and sealing the discharge port 41. A pressurizing device 6 is provided on the cap 5, the cap 5 is attached to the applicator main body 1, and then the cap 5 and the applicator main body 1 are attached. By any
To form a closed space 53, and discharge by the closed space 53
The mouth 41 is closed, and the pressurizing device 6 pushes backward in the axial direction.
By an external operation consisting of pressure or clamping inward in the radial direction
By the variable volume section 7 that reduces the volume of the closed space 53.
Ri is configured, the enclosed space 53 to pressurize the pressure device 6 by work <br/> dynamic by said external operation, and configured to be capable of incorporating the air from the discharge port 41 in the container 2, the calibration
The mounting of the cup 5 and the operation of the pressurizing device 6 are not performed simultaneously,
An applicator configured to be performed alone . 2. The variable volume section 7 is provided in the cap 5.
The cylinder portion 71 and the cylinder portion 71 slide in close contact with each other.
Piston part 72 and urges the piston part 72 forward
The elastic body 73 and the piston portion 72 are connected to each other.
Operation to move the piston portion 72 backward by being exposed to the outside
The applicator according to claim 1 , wherein the applicator is configured by the section 8 . 3. The variable volume section 7 is arranged in an axial direction or a radial direction.
The elastic member 85 that is deformable and has a self-restoring force
The applicator according to claim 1, which is formed .