JP7452907B1 - glue container - Google Patents

Abstract

[Problem] To prevent glue from leaking from a glue outlet in a glue container when inverted. [Solution] A threaded part 7 into which an inner cap 3 is threaded is provided on the tip side of a container body 1, a glue outlet 5 is formed at the tip of the threaded part 7, and a tip opening is provided in the inner cap 3. A holder 10 for holding the applicator 2 is provided so as to protrude from the inner cap 3, and an elastic flat slit valve 20 is fitted into the inner cap 3. The outer diameter of the slit valve 20 is slightly larger than the outer diameter of the distal end surface of the threaded part 7 and larger than the outer diameter of the proximal end 15 of the holder 10, and the height of the threaded part 7 is is slightly larger than the length from the base end of the inner cap 3 to the slit valve 20. When the inner cap 3 is attached to the container body 1, the distal end surface of the threaded portion 7 comes into pressure contact with the slit valve 20, and the slit valve 20 comes into close contact with the proximal end 15 of the holder 10. [Selection diagram] Figure 1

Description

The present invention relates to a glue container that does not leak glue and allows immediate application of glue.

In a glue container that is placed with the container body upside down with the cap facing down, a valve is provided to close the glue outlet of the container body so that the liquid glue contained in the container body does not leak out. For example, in the glue container described in Patent Document 1, a straw hat-shaped rubber valve body with a cross-shaped slit is used, the brim of the valve body and the valve support are adhered, and the sponge sheet support is bonded to the valve body. A valve support is attached to the inside, and a sponge sheet overlaid on a sponge sheet support is attached to the container body using an inner cap. Even if the container body is placed upside down, the glue will not leak downward through the slit in the valve body due to its own weight.

In the glue container described in Patent Document 2, a support body having a valve mechanism is provided on the inner cap that holds the application pad, and the valve element is normally pressed against the valve seat by the action of a spring to reach the application port for the glue solution. At the same time, the valve body protrusion pushes the applicator pad at the application port and inflates the applicator pad outward from the application port. The valve element is pushed away from the valve seat via a sideward sliding motion, opening the valve and allowing the glue to flow to the application port.

Publication No. 55-159192 Registered utility model No. 3026174

In the valve body of the former glue container, a convex portion is formed that swells in a direction opposite to the tip side of the container body, and a slit is formed in the center of the convex portion. When the container body is gripped during use, the pressure applied to the slit is applied in a direction that makes it difficult for the slit to deform, making it difficult for the slit to open. Therefore, it is difficult to adjust the force when gripping the container body, and it is not easy to adjust the amount of glue applied. Further, the peripheral edge of the convex portion is located at a lower position than the slit, and glue accumulates here. The accumulated glue does not flow out from the slit, and the glue cannot be used to the end.

In the latter type of glue container, a valve mechanism prevents unnecessary glue from accumulating in the inner cap opening. However, when the container body is turned upside down, if there is not enough glue remaining, the pad tends to dry out. Therefore, if the pad is left for a long time, it will take time for the glue to penetrate into the pad, making it impossible to apply the glue right away. Further, a part of the support is accommodated in the glue outlet of the container body, but there is a gap between the support and the container body, and if glue accumulates there, it will not be discharged. Therefore, the glue cannot be used to the end.

Therefore, an object of the present invention is to provide a glue container that does not cause glue leakage when the container is turned upside down by using a slit valve having a structure different from the above-mentioned valve.

In the glue container of the present invention, a threaded part into which the inner cap is threaded is provided on the tip side of the container body containing liquid glue, a glue outlet is formed at the tip of the threaded part, and an opening at the tip of the inner cap. An applicator is provided to protrude from the inner cap, and a holder for holding the applicator is provided within the inner cap, and when pressure is applied to the container body in an inverted state, the glue flowing out from the container body oozes into the applicator. In the glue container, an elastic flat plate-shaped slit valve is fitted into the inner cap in order to prevent glue from leaking from the glue outlet of the container body when the container body is placed upside down with the outer cap facing down. The slit valve is arranged opposite to the annular base end of the holder, which is formed in a dome shape that swells toward the distal end, and the outer diameter of the slit valve is larger than the outer diameter of the distal end of the threaded part. The height of the threaded part is slightly larger than the length from the base end of the inner cap to the slit valve. When the valve is attached to the container body, the end surface of the threaded portion comes into pressure contact with the slit valve.

When the inner cap is attached to the container body, the distal end surface of the container body comes into pressure contact with the slit valve, and the slit valve can be brought into close contact with the base end of the holder, and the slit valve functions as a packing.

A slit valve has a slit that opens in response to an increase in the internal pressure of the container body, and the slit is formed by cutting a slit in the rubber sheet. Even if internal pressure is applied, the slit remains tightly closed due to its elastic force, so the glue will not leak out from the glue outlet.

According to the present invention, by using an elastic flat plate-shaped slit valve, it is possible to prevent glue from leaking from the glue outlet when the glue container is placed upside down.

A sectional view of a glue container according to an embodiment of the present invention Exploded cross-sectional view of glue container Top view of slit valve Plan view of other forms of slit valves Plan view of other forms of slit valves Plan view of other forms of slit valves Plan view of other forms of slit valves Plan view of other forms of slit valves

A glue container according to an embodiment of the present invention is shown in FIGS. 1 and 2. The glue container is composed of a container body 1 containing liquid glue, an inner cap 3 having an applicator 2, and an outer cap 4 fitted into the container body 1. An inner cap 3 is attached to the tip side of the container body 1, and an outer cap 4 is fitted to the tip side of the container body 1 so as to cover the inner cap 3. The present glue container can be used as an inverted type glue container by placing the outer cap 4 on a desk or the like with the tip of the container body 1 facing downward.

The container body 1 is formed into a cylindrical shape with a bottom, and a glue outlet 5 is opened at the tip. A fitting part 6 having a diameter slightly smaller than that of the container body 1 and a threading part 7 having a smaller diameter than the fitting part 6 are provided on the tip side of the container body 1. An annular rib 8 is formed on the outer surface of the fitting part 6, and a thread 9 is formed on the outer surface of the threaded part 7. The threaded portion 7 is formed in a tapered shape whose diameter gradually decreases toward the tip.

The inner cap 3 has an applicator 2 and a holder 10 that holds the applicator 2, and is a tapered cylindrical body whose diameter gradually decreases toward the distal end. An applicator 2 is provided so as to protrude from a tip opening 11 of the inner cap 3, and a holder 10 is provided within the inner cap 3. A threaded groove 12 is formed on the inner surface of the inner cap 3, and the inner cap 3 is screwed into the threaded portion 7 so as to cover the glue outlet 5. The outer cap 4 is formed to have a larger diameter than the inner cap 3, has a circumferential groove 13 formed on its inner surface, and by fitting the ribs 8 into the circumferential groove 13, the outer cap 4 is fitted into the fitting portion 6. An airtight space 14 is formed between the outer cap 4 and the inner cap 3.

The plastic holder 10 is formed into a dome shape that swells toward the distal end, and the base end 15 of the holder 10 is formed into an annular shape. A central opening 16 is provided at the tip of the holder 10, and a plurality of openings 17 are formed from the base end 15 toward the central opening 16, through which the glue passes. The applicator 2 is made of a circular sponge sheet with open cells, and becomes dome-shaped by being superimposed on the holder 10. Note that the applicator 2 is not limited to a sponge, and may be any porous elastic material.

The holder 10 on which the applicator 2 is stacked is fitted into the inner cap 3, and the tip side of the holder 10 protrudes from the tip opening 11 of the inner cap 3. Accordingly, the tip side of the applicator 2 protrudes from the tip opening 11 and is exposed to the airtight space 14. The base end 15 of the holder 10 is in close contact with the inner surface of the inner cap 3, the outer peripheral edge of the applicator 2 is sandwiched between the peripheral wall 18 of the tip opening 11 of the inner cap 3, and the base end 15, and the applicator 2 is It is held so that it does not slip out from the tip opening 11.

A slit valve 20 is provided in the inner cap 3 to prevent glue from leaking from the glue outlet 5 of the container body 1 placed upside down. As shown in FIG. 3, the slit valve 20 is made of a thin circular plate having elasticity, and is formed so that two slits 21 passing through the center cross each other in a cross shape. The diameter of the slit valve 20 is larger than the outer diameter of the proximal end 15 of the holder 10, and the length of the slit 21 is smaller than the inner diameter of the proximal end 15 of the holder 10. The slit valve 20 is made of an elastomer such as rubber, but silicone rubber is preferred in terms of quality and performance. Note that natural rubber may be used from an environmental standpoint, and chloroprene rubber may be used because of its durability. In addition, various other materials such as ethylene propylene rubber, fluororubber, nitrile rubber, and butyl rubber can be used. That is, the material of the slit valve 20 can be appropriately selected depending on the characteristics of the liquid glue, the environment, etc. The slit 21 of the slit valve 20 is formed by cutting a rubber sheet with a cutter. When the slit valve 20 is in a flat state, the cut surfaces of the slits 21 are in close contact.

The slit valve 20 is fitted into the inner cap 3 and is disposed within the inner cap 3 facing the base end 15 of the holder 10 . Thereby, the slit valve 20 is integrated into the inner cap 3 together with the applicator 2 and the holder 10. When the inner cap 3 is fitted and attached to the threaded portion 7 of the container body 1, the base end of the inner cap 3 comes into contact with the tip of the fitting portion 6, and the tip surface 22 of the container body 1 is pressed against the slit valve 20. Then, the glue outlet 5 is closed by the slit valve 20. At this time, the slit valve 20 comes into close contact with the base end portion 15 of the holder 10 and also with the inner surface of the inner cap 3. A glue reservoir space 23 is formed between the holder 10 and the slit valve 20, which is largely recessed toward the tip side.

Here, the height of the threaded part 7, that is, the length from the tip of the fitting part 6 to the tip of the threaded part 7, is the length from the base end of the inner cap 3 that contacts the tip of the fitting part 6 to the slit valve 20. It is said to be slightly larger than the length of . Further, the outer diameter of the slit valve 20 is slightly larger than the inner diameter of the inner cap 3 at the position where the slit valve 20 is fitted. As a result, when the inner cap 3 is attached to the container body 1, the slit valve 20 can be brought into close contact with the distal end surface 22 of the container body 1, the inner surface of the inner cap 3, and the proximal end 15 of the holder 10, and the slit valve 20 serves as a packing. Note that even if there are variations in the shape of the slit valve 20, if the slit valve 20 has elasticity, some variation can be absorbed, adhesion can be maintained, and reliability in preventing glue leakage can be improved.

An inner stopper (not shown) is fitted into the glue outlet 5 of the glue container before use. Therefore, glue does not leak during storage. In use, the inner stopper is removed, the inner cap 3 is attached to the container body 1, and the glue outlet 5 is closed with the slit valve 20. When the outer cap 4 is fitted into the container body 1, the inner cap 3 is covered with the outer cap 4, and the tip of the applicator 2 comes into contact with the outer cap 4.

When the glue container is placed upside down, internal pressure due to the weight of the glue is applied to the slit valve 20, but the elastic force of the slit 21 keeps the slit 21 tightly closed, and the glue does not leak out from the glue outlet 5. . Here, when the glue container is used continuously, the outer cap 4 may not be fitted tightly but may be fitted in a floating state. Even in such a case, the glue from the applicator 2 does not leak out, so the applicator 2 can be used with peace of mind without the glue adhering to the surroundings. Note that even if the viscosity of the glue is low, since the slit valve 20 is in a flat state, the cut surfaces of the slits 21 are in close contact with each other, and the glue does not leak out from the slits 21. The wall thickness of the slit valve 20 and the length of the slit 21 are set so that such elastic force is generated. For example, the wall thickness of the slit valve 20 is 0.3 mm to 1.0 mm, preferably 0.5 mm.

Then, when the container body 1 is grasped and force is applied, the slit 21 is opened in response to an increase in the internal pressure of the container body 1. As the force applied to grip the container body 1 increases, the internal pressure of the container body 1 increases, and when it exceeds the elastic force of the slit 21, the slit 21 gradually deforms. When the slit 21 is opened, the glue passes through the slit 21 and accumulates in the glue reservoir space 23. The accumulated glue oozes out from the applicator 2, and the glue can be applied. At this time, the amount of opening of the slit 21 changes depending on the force with which the container body 1 is gripped, making it possible to adjust the amount of glue coming out of the slit 21. That is, when force is applied to increase the pressure, the amount of opening of the slit 21 gradually increases. When the force is weakened, the amount of opening of the slit 21 becomes smaller. Therefore, the amount of glue applied can be easily adjusted by adjusting the force applied to the container body 1. In addition, since the amount of opening of the slit 21 can be set depending on the width and shape of the slit 21, the amount of opening of the slit 21 can be increased for high viscosity glue, making it possible to handle from low viscosity glue to high viscosity glue.

Moreover, since the slit valve 20 is flat and deformed so that the slit 21 is inclined downward, the glue inside the container body 1 flows down into the glue reservoir space 23 along the surface of the slit 21. The glue inside the container body 1 is discharged and the glue can be used up to the end.

When the pressure applied to the container body 1 is relaxed, the internal pressure of the container body 1 decreases, and when the internal pressure becomes lower than the elastic force of the slit 21, the slit 21 returns to its original state and closes due to the elastic force. When the slit 21 is closed, the glue will no longer leak out. At this time, as shown in FIG. 1, glue accumulates at the bottom of the glue reservoir space 23 according to the amount of deformation of the slit 21, and if the glue container is placed upside down, the glue comes into contact with the applicator 2. , it is possible to prevent the applicator 2 from drying out. Note that since no pressure is applied to the glue accumulated in the glue reservoir space 23, the glue does not ooze out from the applicator 2. Then, when the outer cap 4 is removed and used, the glue is accumulated in the glue reservoir space 23, so that the glue can be applied immediately.

When the glue container is used, pressure is applied to the container body 1, so that the container body 1 is depressed. After use, the container main body 1 attempts to return to its original shape and a suction force is generated. At this time, when the air in the glue reservoir space 23 flows into the container body 1 through the slit 21 and the container body 1 returns to its original shape, the suction force disappears and the slit 21 closes. Note that if the container main body 1 cannot be returned to its original shape by the air in the glue pool space 23 alone, the air in the airtight space 14 between the inner cap 3 and the outer cap 4 passes through the applicator 2 and returns to the glue pool space 23. It flows into the container body 1 from the inside. Since the glue is collected in the lower part of the glue reservoir space 23, air can flow in through the portion near the base end of the applicator 2, and the container body 1 reliably returns to its original shape.

When the glue container is placed upright, that is, with the container body facing downward, the glue in the glue reservoir space 23 accumulates on the slit valve 20. When using the glue container from this state, when the container body 1 is turned downward, the glue in the glue reservoir space 23 flows onto the applicator 2, and the application of glue can be started immediately.

As described above, by using the flat elastic slit valve 20, the amount of glue applied can be easily adjusted by adjusting the force applied to the container body 1, so anyone who uses it can enjoy this function. can. Moreover, since a standard product can be used as the slit valve 20, an inexpensive slit valve 20 can be supplied, and cost performance can be improved. In particular, in the case of a glue container, the container body may be used for a long time while being refilled with glue. In this case, it becomes difficult to apply the glue due to wear of the sponge or the like, so it becomes necessary to replace the inner cap 3 with which the applicator 2 is integrated. A slit valve 20 is also set in the inner cap 3, and by using the inexpensive slit valve 20, a replacement inner cap 3 can be provided at an appropriate price.

Note that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention. As another form of the slit 21 of the slit valve 20, as shown in FIG. 4, one slit 21 may be formed in a negative shape. Furthermore, as shown in FIG. 5, three slits 21 are combined, as shown in FIG. 6, the slits 21 are formed in a star shape, as shown in FIG. 7, the slits 21 are formed in an S-shape, As shown in FIG. 8, the slit 21 is formed in a U-shape.

Further, the inner cap 3 may be formed into a straight tube shape, and the diameter of the slit valve 20 is larger than the inner diameter of the inner cap 3 and larger than the outer diameter of the proximal end portion 15 of the holder 10. When the slit valve 20 is pushed into the inner cap 3 and fitted, the slit valve 20 comes into close contact with the distal end surface 22 of the container body 1, the inner surface of the inner cap 3, and the proximal end 15 of the holder 10, thereby eliminating leakage of glue. Can be done.

1 Container body 2 Applicator 3 Inner cap 4 Outer cap 5 Glue outlet 10 Holder 11 Tip opening 15 Base end 20 Slit valve 21 Slit 23 Glue reservoir space

Claims (2)

A threaded part into which the inner cap is threaded is provided on the tip side of the container body containing the liquid glue, a glue outlet is formed at the tip of the threaded part, and an applicator is arranged so as to protrude from the opening at the tip of the inner cap. is provided, a holder for holding an applicator is provided in the inner cap, and when pressure is applied to the container body in an inverted state, the glue flowing out from the container body oozes into the applicator,
In order to prevent glue from leaking from the glue outlet of the container body when the container body is placed upside down with the outer cap facing down, an elastic flat plate-shaped slit valve is fitted into the inner cap. It is arranged opposite to the annular base end of the holding body formed in the shape of a dome that swells toward the
The outer diameter of the slit valve is larger than the outer diameter of the distal end of the threaded part and larger than the outer diameter of the proximal end of the holder. The vertical length from the base end of the threaded part to the tip when viewed in a placed position is the vertical length from the base end of the inner cap to the slit when viewed with the container body upside down with the inner cap facing down. A glue container, which is larger than the length in the vertical direction up to the valve, and is characterized in that when the inner cap is attached to the container body, the end surface of the threaded part comes into pressure contact with the slit valve. A slit valve has a slit that opens in response to an increase in the internal pressure of the container body, and the slit is formed by making a cut in the rubber sheet, and when the container body is placed upside down, the glue 2. The glue container according to claim 1, wherein the slit maintains a tightly closed state due to elastic force even if an internal pressure is applied thereto.

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