JP3242364B2 - Inside stopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner plug attached to the mouth of a tubular container.

[0002]

2. Description of the Related Art Conventionally, one of the constructions for preventing the inflow of air into a tube-shaped container and preventing the contents contained in the tube-shaped container from solidifying is disclosed in Japanese Utility Model Application Publication No. As disclosed in JP-A-56-24456,
2. Description of the Related Art An extrusion tube equipped with an on-off valve that automatically opens and closes the mouth of a tube-shaped container is known.

FIG. 3 is a sectional view of the extruded tube. As shown in FIG. 3, the extruded tube 100 has an opening 102 for discharging the contents stored in the tube main body 101 to the outside. Valve seat 104 with 103
It has. The valve seat 104 has a through hole 10.
An on-off valve 105 slidably fitted to 3 is attached. A biasing piece 106 extending from the bottom of the on-off valve 105 and integrally formed with the tube body 101 near the connection point between the tube body 101 and the mouth 102 is attached to the on-off valve 105. The urging piece 106 urges the on-off valve 105 with a predetermined urging force downward in the drawing.

[0004] The on-off valve 105 is provided with a valve shoulder piece 107 that abuts against the valve seat 104 by the urging force of the urging piece 106 and seals the through hole 103. Has been established. In the extrusion tube 100 configured as described above, when the tube body 101 is pressed, the contents that have reached the on-off valve 105 press the on-off valve 105 upward in the drawing, and act on the on-off valve 105 from the contents. When the pressing force becomes larger than the urging force of the urging piece 106 acting downward in the drawing, the on-off valve 105 slides upward in the drawing. Then, with the sliding of the on-off valve 105, the valve seat 104 and the valve shoulder 1
07 is released, and at this time, the contents are discharged from a gap formed between the on-off valve 105 and the through hole 103.

On the other hand, when the pressing on the tube body 101 is released, the tube body 101, which is going to return to the original shape, draws in the contents.
And the on-off valve 105 slides downward in the figure. When the valve seat 104 and the valve shoulder piece 107 abut on each other, the through hole 103 is sealed.

Accordingly, in the extruded tube 100, not only can the contents be discharged to the outside by pushing the tube main body 101 by hand, but also if the hand pressing the tube main body 101 is released, the opening / closing valve 105 seals the through hole 103, It was possible to prevent air from flowing into the tube main body 101.

[0007]

However, the pushing tube 100 has an urging piece 106 provided inside the tube body 101 and is formed integrally with the tube body 101 and also with the on-off valve 105. Therefore, there was a problem that production was difficult. Further, when the biasing piece 106 is cut or the on-off valve 105 is broken, there is a problem that these cannot be repaired or replaced with another object.

[0008] Therefore, in the present invention, a tube provided with a valve element which is an inner plug attached to the mouth of a tube-shaped container and which can be repaired even if the valve element or the like is damaged, and which opens and closes automatically. An object of the present invention is to provide an inner plug in which a mold container can be easily manufactured.

[0009]

Means for Solving the Problems and Effects of the Invention According to the first aspect of the present invention, there is provided an inner plug attached to a mouth of a tube-shaped container, wherein the inner plug is attached to the mouth. When attached to the inside, a communication hole communicating with the mouth from the outside is formed, and an inner plug body having a valve seat surface protruding from an inner side surface of the communication hole, and the inside attached to the mouth. A valve shoulder surface which is inserted from the outside into the communication hole of the plug body, and closes the communication hole when the side surface of a sliding portion slidably formed in the communication hole is brought into contact with the valve seat surface. mounting There where the projecting from a valve body formed in said plug body integrally with the communicating hole is brought into contact with the valve shoulder surface on the valve seat surface
A spring that biases the valve body in a lateral direction ,
The valve body is directed from the lower surface of the sliding portion toward the mounting side.
Thus, it is protruded, and the mounting side direction of the spring spring is
A bifurcated shape provided with an engagement piece at the tip that engages the lower end of the
A leg, and passing the leg through the spring spring;
The engagement piece comes into contact with the inside of the spring
And the legs are tilted inward.
By being opened by the elastic force generated by the
A piece engages the spring spring .

In the plug according to the first aspect of the present invention, the valve spring inserted into the communication hole of the plug main body is urged by a spring spring in a direction in which the valve shoulder surface comes into contact with the valve seat surface. , The communication hole is in a sealed state. When the inner plug according to claim 1 is attached to the mouth of the tube-shaped container and operated by pressing the tube main body of the tube-shaped container, the inner plug operates as follows.

First, when the tube main body is pressed, the contents stored in the tube main body reach the valve body provided on the inner side surface of the communication hole through the mouth, and press the valve body. . Then, when the tube main body is further strongly pressed, the pressing force by which the contents push the valve body eventually becomes stronger than the urging force by which the spring spring urges the valve body. Then
The valve body slides inside the communication hole and is pushed out, the valve shoulder surface and the valve seat surface closing the communication hole are separated, and the contents start to flow from between the valve shoulder surface and the valve seat surface. The contents are discharged outside.

That is, in order to discharge the contents from the inside of the tube-shaped container having the inner plug attached to the mouth portion according to the first aspect, the tube is made to apply a pressing force larger than the urging force to the valve body. All you have to do is press the body by hand. on the other hand,
When the pressing of the tube body is released, the pressing force acting on the valve body by strongly pressing the tube body is reduced, and the urging force of the spring spring becomes larger than the pressing force. Then
The urging force overcomes the pressing force, the spring spring retracts the valve body, and the valve seat surface and the valve shoulder surface come into contact with each other, thereby closing the communication hole.

That is, if the tube body having the inner plug attached to the mouth portion is pressed to discharge the contents to the outside, and then the hand pressing the tube body is loosened,
Since the valve body closes naturally, it is possible to prevent air from flowing into the tube body and solidifying the contents.

Therefore, a valve body having a function of automatically opening and closing in response to an operation of pressing the tube main body or releasing the press simply by attaching the inner plug according to claim 1 to the mouth portion. A tube-shaped container such as the extruded tube shown in the section of the technique can be easily prepared.

The inner plug according to the first aspect of the present invention may be attached to a mouth of a tube body which is conventionally commercially available. Next, in order to manufacture the inner plug according to the first aspect, first, the spring spring and the inner plug main body are integrally formed so that the spring is provided in the communication hole having the valve seat surface protruding from the inner side surface. A formed body is created, and a valve body having a valve shoulder surface formed separately from the side is inserted into the communication hole from the outside, and the valve shoulder surface is urged in a direction in which it comes into contact with the valve seat surface. Attach the valve body to the spring. Then, the inner stopper may be attached to the mouth of the tube-shaped container.

Therefore, when the inner plug according to the first aspect is used, it is not necessary to integrally form a complicated member inside the tube main body as in the case of the extruded tube shown in the conventional section, so that the inner plug can be formed easily. Moreover, it can be easily assembled. In order to urge the valve body by the spring spring, any method may be used, such as attaching a locking piece or the like capable of locking the valve body to the spring spring to the valve body.

Further, the spring may be made of a material different from that of the inner plug main body, and may have any configuration as long as the spring is integrally attached to the inner plug main body. Next, as in the inner plug according to claim 2, claim 1
In the inner plug according to the aspect, in a state where the valve seat portion and the valve shoulder portion are in close contact with each other, when the valve body is stored in the through hole, the opening surface of the inner plug main body in which the communication hole opens is provided. The facing surface portion of the valve body may be formed so as to form a series of application surfaces having no step with the opening surface.

When formed like the inner plug according to the second aspect, it is possible to discharge a required amount of the contents to the application surface and hold the tube to apply the application surface against the skin or the like. Also, when applying the contents in this way, if the application surface is pressed strongly, the valve body will not rise and the contents will not be discharged even if the tube body is pressed by hand. Can be applied.

By the way, the inner plug described above may be attached so that once it is attached to the mouth, it will not come off again.
Like the inner plug according to the third aspect, in the inner plug according to the first or second aspect, the inner plug body may be configured to be detachable from the mouth.

According to the third aspect of the present invention, when the opening is formed as in the inner plug, when the valve element or the spring is damaged,
When looking at the entire tube with the valve body attached, in the case of the extruded tube shown in the section of the prior art, the entire tube body had to be replaced by refilling the contents, etc. The attached tube-type container can be repaired simply by replacing the inner stopper.

In particular, when the contents are applied to a plurality of persons using the same inner plug forming the application surface as described in claim 2 (a barber, a beauty salon, or the like can be considered), the same inner plug is used. When applied with, there is a feeling of uncleanness, but when it is removable, the inner plug can be replaced each time it is used, so that such uncleanness can be wiped out.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Here, FIG. 1 is a cross-sectional view of a tube-shaped container in which the inner plug of the present embodiment is attached to the mouth.

As shown in FIG. 1, the tube type container 1 having the inner plug 10 of this embodiment is provided with a cylindrical mouth portion 20, and when pressed, the stored contents are discharged from the mouth portion 20. The tube 20 is formed in a substantially cylindrical shape so as to have a communication hole 110 having an inner diameter larger than the outer diameter of the outer peripheral surface of the opening 20, and the opening 20 is inserted into the communication hole 110. And an inner plug 10 fitted into the inner plug.

The inner plug 1 attached to the mouth 20
A cap 3 formed in a shape that covers the inner plug 10 along the outer surface of the inner plug 10 is screwed and attached to the inner plug 10. still,
A screw groove 30 for attaching and detaching the cap 3 to and from the inner plug 10 is formed on the inner side surface near the opening side of the cap 3.

An engagement projection 29 for locking the inner plug 10 to the mouth 20 is provided on the outer side surface of the mouth 20. Hereinafter, the inner plug 10 of the present embodiment will be described in detail. As shown in FIG.
0, the tube body 2 and the outside are
And a side (hereinafter, referred to as an “insertion side”) opposite to a side (hereinafter, referred to as an “attachment side”) on which the inside main body 11 has a communication hole 110 that communicates with the inside through a hole. From the communication hole 110 and the communication hole 11
0, a valve body 14 slidably formed in
And a spring 13 for urging the spring toward the mounting side.

First, regarding the inner plug body 11, a band-shaped valve seat portion 12 having a substantially rectangular cross section is provided on the inner side surface on the insertion side of the communication hole 110, and the upper side surface thereof is provided. Is formed with a valve seat surface 120 that is inclined toward the insertion side from the radially inner side to the outer side of the communication hole 110. A sliding margin 112 is formed vertically from the upper end of the valve seat surface 120 toward the insertion side. On the other hand, the inner side surface on the mounting side of the communication hole 110 is provided at a position opposed to the engagement protrusion 29 when the inner plug 10 is fitted to the mouth portion 20, and is engaged with the engagement protrusion 29. A groove 19 is provided.

On the outer side surface of the inner plug body 11 on the mounting side, there is formed a screwing groove 111 screwed with the screwing groove 30 for screwing and attaching the cap 3. Next, the spring 13 is a crane spring that is formed so that the inside diameter of one end in the expansion and contraction direction is smaller than the inside diameter of the other end, and that exerts elastic force in the extension direction. The end is integrally attached to the attachment side of the inner side surface of the valve seat 12.

Next, the valve element 14 includes a cylindrical valve element sliding section 140 slidable in a communication hole 110 around which the valve seat section 12 is provided. A valve shoulder 16 which is provided on the side surface on the insertion side and is formed to slide in the communication hole 110 of the sliding allowance 112, and protrudes from the lower surface of the valve body sliding portion 140 toward the mounting side. And the spring 1
3 is provided with a bifurcated leg 18 provided at the tip with an engagement piece 180 that engages the lower end.

Of these, the valve shoulder 16 is formed so that the valve shoulder surface 160, which is the lower side surface thereof, abuts on the valve seat surface 120, and when they abut, the communication hole 110 is sealed.
Hereinafter, when the valve shoulder surface 160 abuts on the valve seat surface 120 and the communication hole 110 is closed, the valve shoulder surface 16 is closed.
0 and the valve seat surface 120 are separated from each other, and the communication hole 110 is opened.

Also, when the valve is closed, the valve body sliding portion 140 and the inner plug main body 11 are arranged such that the insertion side surface of the valve body sliding portion 140 and the insertion side surface of the inner plug body 11 form a flat coating surface with no step. Is formed. The inner plug 10 configured as described above,
Assemble as follows.

First, the spring 13 and the inner plug body 11
And the valve body 14 are formed using a mold or the like. Then, the valve element 14 may be inserted into the communication hole 110 from the insertion side, and the engagement piece 180 attached to the tip of the leg 18 may be engaged with the attachment-side end of the spring 13. Then, the valve body 14 is urged toward the mounting side by the urging force of the spring 13 to maintain the communication hole 110 in a sealed state.

When the valve element 14 is engaged with the spring 13, the valve element 14 is engaged by passing the leg 18 through the spring 13. That is, the leg portion 18 inserted into the spring spring 13 is tilted inward by the engagement piece 180 abutting on the inside of the spring spring 13, and the engagement piece 180 reaches the lower end of the spring spring 13 before long.
When the leg portion 18 is opened by the elastic force generated by falling inward, the engaging piece 180 is engaged with the spring spring 13, and the valve body 14 is engaged with the spring spring 13.

Then, in order to produce the tube-shaped container 1, the inner plug 10 assembled as described above may be attached to the mouth portion 20 so that the engagement projection 29 is engaged with the engagement groove 19. When the cap 3 is mounted, the screw groove 3
0 is screwed into the screw groove 111 and attached to the inner plug 10.

The tube type container 1 assembled as described above
When the contents stored in the tube body 2 are discharged to the outside by using the valve body, the valve element 14 of the inner plug 10 operates as follows. Here, FIG. 2 is a cross-sectional view of the tube-shaped container 1 when the valve element 14 is pressed.

First, when the valve is closed, the valve body 14 is urged by the spring spring 13 as shown in FIG. 1, and the valve shoulder surface 160 contacts the valve seat surface 120 to seal the communication hole 110, and the valve body 14 is closed. An application surface is formed by the insertion side surface of the body sliding portion 140 and the insertion side surface of the inner plug main body 11. However, when the tube body 2 is pressed and the content is discharged from the mouth portion 20 into the communication hole 110, the valve body 14 is pushed from the content overflowing into the communication hole 110 to push up the valve body 14 in the insertion side direction. The pressure acts on the valve body 14. Then, when the tube body 2 is further pressed and the pressing force is greater than the urging force of the spring spring 13 urging the valve element 14, the valve element 14 is lifted in the insertion side direction as shown in FIG. . Then, the valve shoulder surface 160 and the valve seat surface 120 that are in contact with each other are separated to form a gap a,
The contents are discharged to the outside through the gap a.

That is, in the tube type container 1 in which the inner plug 10 of this embodiment is attached to the mouth 20, when the tube body 2 is pushed strongly when the valve is closed, the valve body 14 is moved from the insertion side of the inner plug body 11. The contents protrude and are discharged to the outside.
Next, when the pressing on the tube body 2 is released, the pressing force acting on the valve body 14 by strongly pressing the tube body 2 is reduced, and the urging force of the spring spring 13 becomes larger than the pressing force. Then, the urging force overcomes the pressing force, and the spring 13 retracts the valve body 14, so that the valve seat surface 120 and the valve shoulder surface 160 abut, and the communication hole 100 is sealed.

That is, if the force pushing the tube body 2 is relaxed when the valve is opened, the valve body 14 is naturally closed by the urging force of the spring spring 13 and the communication hole 110 is sealed. It is possible to prevent the content from flowing into the inside and solidifying.

As described above, the inner plug 10 of this embodiment is
The following effects can be obtained by using the tube-shaped container 1 in which is attached to the mouth 20. First, by simply attaching the inner plug 10 of the present embodiment to the mouth portion 20 of the tube-shaped container 1, a valve body having a function of pressing the tube body 2 or automatically opening and closing with an operation of releasing the pressing is provided. The tube type container 1 such as the extruded tube shown in the section of the related art can be easily prepared.

It is to be noted that the inner plug 10 of this embodiment may be attached to the mouth of a tube-shaped container comprising a tube body 2 and a mouth 20 which are conventionally commercially available. In addition, when the valve is closed, the inner plug 10 of the present embodiment forms an application surface with no step between the insertion side surface of the valve element 14 and the insertion side surface of the inner plug body 11, so that the contents are applied to the application surface. The necessary amount is discharged, and the application surface can be pressed against the skin or the like with the tube main body 2 and the content can be applied to the skin. At this time, if the application surface is strongly pressed, even if the tube main body 2 is pressed by hand, the valve body 14 does not rise and the contents are not discharged, so that an appropriate amount of contents is applied without discharging extra contents. can do.

In the present embodiment, the engaging projection 29 is provided on the outer side surface of the mouth portion 20 and the engaging groove 19 is provided on the inner side surface of the inner plug body 11, and the engaging protrusion 29 is engaged with the engaging groove 19. The inner plug 10 was fixed to the mouth 20 by the
1 and the mouth 20 may be configured to be detachable. With such a configuration, when the valve body 14 and the spring spring 13 are broken, when the entire tube including the valve body that automatically opens and closes is viewed, in the case of the extruded tube shown in the section of the prior art, the entirety is used. It had to be replaced, but inside plug 1
This is because repair can be performed simply by replacing 0. Further, when discharging the contents to the application surface and applying the contents to a plurality of legs in a barber shop or the like and applying the contents to a plurality of legs, there is a feeling of fouling if the same inner plug 10 is applied. Is to replace such a feeling of filth.

When the inner plug main body 11 and the mouth portion 20 are made detachable, the inner plug main body 11 may be attached to the mouth portion 20 by being screwed into any form. Further, in the present embodiment, the engaging piece 180 is provided at the tip of the leg portion 18 and the valve element 14 is locked by the spring spring 13 by the locking piece to urge the valve element 14. The method is not limited to this.

The spring 13 is provided on the inner plug body 1.
It may be made of a material different from 1 and may have any structure as long as the spring 13 is integrally attached to the inner plug body 11.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a tube-shaped container with an inner plug attached to the present embodiment.

FIG. 2 is a cross-sectional view of a tube-shaped container with an inner plug attached to the embodiment.

FIG. 3 is a cross-sectional view of a conventional extrusion tube.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tube type container, 2 ... Tube main body, 3 ... Cap, 10 ... Inner plug, 11 ... Inner plug main body, 12 ... Valve seat part, 13
... spring spring, 14 ... valve element, 16 ... valve shoulder, 18 ...
Leg, 19: engagement groove, 20: mouth, 29: engagement protrusion, 3
0: screw groove, 110: communication hole, 111: screw groove, 112
... sliding allowance, 120 ... valve seat surface, 140 ... valve element sliding part, 16
0: valve shoulder surface, 180: engagement piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 39/04 B65D 35/48 B65D 45/02 B65D 47/44

Claims (3)

(57) [Claims] 1. An inner plug attached to a mouth of a tube-shaped container, wherein when the inner plug is attached to the mouth, a communication hole communicating with the mouth from outside is formed, and the communication hole is provided. An inner plug body provided with a valve seat surface protruding from an inner side surface of the inner plug body; and an inner plug body attached to the mouth portion, which is inserted from the outside into the communication hole of the inner plug body, and is slidably formed in the communication hole. A valve body having a valve shoulder surface protruding from a side surface of the sliding portion that seals the communication hole when brought into contact with the valve seat surface, and is formed integrally with the inner plug body in the communication hole. A spring that urges the valve body in a mounting direction in which the valve shoulder surface is brought into contact with the valve seat surface , wherein the valve body moves from a lower surface of the sliding portion toward the mounting side. Protruding
And a lower end of the spring spring in the mounting side direction.
A bifurcated leg provided with a mating engagement piece at a tip thereof, and passing the leg through the spring spring;
When the engagement piece contacts the inside of the spring, it falls down
And the elasticity caused by the inward fall of the legs
By being opened by force, the engagement piece
An inner plug which is engaged with a ring spring . 2. The inner plug according to claim 1, wherein the communication hole is opened when the valve body is housed in the through hole with the valve seat portion and the valve shoulder portion in close contact with each other. The surface portion of the valve body facing the opening surface of the inner plug body,
An inner plug formed so as to form a series of application surfaces having no step with the opening surface. 3. The inner plug according to claim 1, wherein said inner plug main body is detachable from said mouth.