JP2003267463A - Gun-type dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily take out an empty container from which discharging is finished and to obtain a high efficiency of exchanging work of the container. <P>SOLUTION: A cylindrical main body 12 into which a container 3 having a bung hole part 5 on its end and filled with a content such as a viscous liquid substance and a pasty substance inside and made of a flexible material, can be inserted as tight as possible from an opening end 12a of an apex side, a cap 2 having an opening 17 through which the bung hole part 5 of the container 3 can be projected and provided so as to freely open and close the opening end of the cylindrical main body 12, a piston 20 pushing and inserting a bottom part 6 of the container 3 in the lengthwise direction of the container and being pushed by a piston rod 13 until the content is approximately discharged, and an operating part for pushing this piston by specified pitches, are provided. The piston 20 is formed so that it can be projected from the apex end of the cylindrical main body 12 over a required distance. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispenser for pouring out the contents of a container filled with the contents such as a viscous liquid substance or a pasty substance by pressing the bottom portion of the container. In particular, it relates to a gun-type dispenser.

[0002]

2. Description of the Related Art When adding mayonnaise, ketchup, various creams, mustard, other viscous liquids and pastes to foods, large quantities are sold at mass retailers of food for eating out such as hamburgers and hot dogs. Since it is necessary to treat the viscous liquid substance and the paste-like substance, the appropriate amount of the viscous liquid substance or the paste substance is automatically dispensed from the container by a dispenser to improve the efficiency at the time of sale.

As one of the above-mentioned dispensers, the conventional one shown in FIG.
There is one shown in. In this dispenser, a flexible thin plastic container b filled with the above-mentioned contents a is loaded in an outer cylinder c, and a bottom portion d of the container b is pressed by a piston e, so that the container b There is a structure in which the contents a are pushed out from the spout g by pushing the bottom portion d side into the body portion f (for example, JP-A-2-139377).

[0004]

However, according to the above-mentioned conventional dispenser, most of the contents a in the container b can be poured out, so that waste of the contents a is reduced. Moreover, since the remaining amount of the contents is small at the time of disposal, it is preferable from the viewpoint of environmental problems.

However, when the conventional dispenser is of a stationary type and has a structure in which the piston is pushed and pulled by a mechanical means, no direct problem occurs, but when the handy type gun dispenser structure is adopted, the following problems occur. Bring

That is, in the above dispenser system, the body f of the container b enters while being folded so as to be doubled by the pushing of the piston e, so that the contents a in the container b
When the piston e is pulled back after the pouring of the liquid has been completed, the folded body part f is entangled with the piston e and the piston e is difficult to pull out, and the empty container b is squeezed by the piston e, so that the outer cylinder c Since it is placed in close contact with the inner surface, it becomes difficult to take out the empty container b from the outer cylinder of the dispenser.

Therefore, when used as a handy type dispenser at a mass retailer, it takes time to process after one container b is used up, which is a problem in terms of workability and work efficiency.

In order to facilitate the pulling out of the piston e and the empty container, the outer diameter of the piston e is made small, and when the bottom portion d side of the container b is folded, the contents a around the body portion f to be folded. Remains in a large amount, and the contents a enter between the body part f on the back side of the piston e, so that when the piston e is pulled out, the contents a
In addition to the problem that the inner diameter of the body portion f is reduced by being enclosed in the body portion f that is folded in two, and the withdrawal of the piston e becomes more difficult, the content a is discarded when the container b after use is disposed of. Will remain and will cause other problems such as environmental pollution.

In view of this, the present invention makes it possible, in a handy type gun type dispenser, to easily take out an empty container from which the contents have been poured, and to withdraw the piston after the pouring is completed. The task is to improve the efficiency of container replacement work.

[0010]

As a means for solving the above-mentioned problems, the invention according to claim 1 has a spout at one end and is filled with contents such as viscous liquid and paste. A tubular body made of a flexible material that can be inserted as tightly as possible from the tip end open end, and an opening through which the spout of the container can project. A cap that is openable and closable, a piston that is pressed into the bottom of the container in the length direction of the container by a piston rod until the internal volume is almost exhausted, and a piston rod that has this piston attached is pressed at predetermined pitches. An operating part for moving the piston, and the piston is formed so as to project from the tip of the tubular body over a required distance.

As a result, when all the contents in the container have been poured out, the cap is opened to open the tip of the cylindrical body, and then the piston rod is moved forward to bring the container whose piston is emptied. The empty container can be easily taken out by protruding from the tip of the tubular main body, grasping the outer periphery of the empty container and pulling it out.

After taking out the empty container, the piston rod is returned, the piston is retracted, a new container with contents is loaded into the cylindrical body, and the cap is closed. .

According to a second aspect of the present invention, the piston is composed of a plurality of piston pieces which are expanded in a disk shape when pushed in and folded by a frictional force between the peripheral surface and the container when pulled back. .

As a result, when pressing the bottom of the container, it is possible to make a disk shape and to press the entire area of the bottom, so that the body of the container can be securely folded.
When the piston is pulled back, it is gradually folded due to the frictional force between the disk-shaped peripheral surface of the piston and the empty body of the container, so the piston outer diameter decreases and the piston can be pulled out with a light force. You can

The invention described in claim 3 is a combination of the above-mentioned claims 1 and 2.

According to a fourth aspect of the present invention, the piston has a cross-sectional shape similar to the inner surface shape of the end portion on the spout portion side at the bottom portion of the container, and is extendable to the outer surface of the protruding bottom portion formed inwardly. It is configured to have a head portion that is closely fitted.

According to this, when the bottom portion of the container is pushed by the piston, the bottom portion can be pressed into a state in which the bottom portion is in close contact with the inner surface on the spout side, whereby the content in the container is substantially poured out. Can be made.

According to a fifth aspect of the present invention, the piston has two
It is preferable to adopt a folded shape because a desired structure can be provided with a simple structure.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is a gun type dispenser 1 according to the present invention.
2 shows a state in which the cap 2 of one embodiment is removed, and FIG. 2 shows a main part of a container 3 suitable for use in the gun type dispenser 1 as a cross section.

The container 3 has a highly flexible structure formed by blow molding or the like with a resin material. A spout 5 is opened at one end of a cylindrical body 4 and a bottom is formed at the other end. A sheet 7 in which a nozzle having a shape suitable for the purpose of pouring the contents is cut is pasted on the pouring portion 5 and the outer surface thereof is sealed with a seal that is peeled off at the time of use. .

The bottom portion 6 of the container 3 has a protruding bottom portion 8 that protrudes inwardly in a shape similar to the inner surface shape of the end portion where the spout portion 5 is provided. A concave groove 9 having a required width is formed at the lower end portion, and a single projecting ridge 10 projecting outward is provided between the peripheral edge of the protruding bottom portion 8 and the outer peripheral edge of the container bottom portion 6. An annular recess 11 is provided between the bottom of the ridge 10 and the outer peripheral edge of the container bottom 6.

Therefore, when the container bottom portion 6 is pushed by the piston, the boundary portion 9a of the concave groove 9 with the container bottom portion 6 is folded first inward over the entire circumference, while the protrusion 10 portion is evenly inward. Will be folded towards you.

The gun type dispenser 1 includes the container 3
Has a cylindrical main body 12 capable of accommodating the outer peripheral surface of the body portion 4 in close contact with the inner peripheral surface, the distal end of the cylindrical main body 12 is an open end 12a, and the rear end is the rear wall. 12b, the rear wall 12b has a piston rod 1
3 is slidably inserted.

A fixed handle 14 is fixedly attached to the rear wall 12b of the cylindrical body 12, and a trigger lever 15 is pivotally supported on the fixed handle 14 by a shaft 16 to form an operating portion. A well-known ratchet mechanism (not shown) is incorporated in the base portion, and when the trigger lever 15 is gripped and rotated, the piston rod 13 is intermittently advanced by a predetermined pitch to release the ratchet. The piston rod 13 can be pulled back.

A cap 2 is provided at the open end 12a at the tip of the cylindrical body 12 so as to be openable and closable. The cap 2 has an opening 17 formed in the top surface 2a thereof through which the spout 5 of the container 3 can project. In this embodiment, the cap 2 is detachably attached to the opening end 12a of the tubular body 12.

That is, the peripheral wall 2b of the cap 2 is fitted onto the outer periphery of the distal end portion of the cylindrical body 12 as closely as possible, and a plurality of L-shaped cut holes 18 are provided from the edge of the peripheral wall 2b. On the outer periphery of the distal end portion of the tubular body 12, a headed pin 19 that fits into the cut hole 18 is provided in a protruding manner, and the open end of the cut hole 18 and the pin 19 are aligned and fitted together. After that, by rotating the cap 2 slightly, the pin 19
Is formed so as to enter the lateral hole portion of the cut hole 18 and be prevented from coming off.

However, the cap 2 may be opened and closed like a door by a hinge at the tip of the tubular body 12, and the opening / closing means may be selected arbitrarily.

A piston 20 is provided at the tip of the piston rod 13.

When the piston 20 is pushed in, the piston 20 is expanded into a disk shape to press the entire bottom portion 6 of the container 3, and when the piston 20 is pulled back, the peripheral surface of the container 20 is folded.
It is configured to be bendable so as to be folded by a frictional force between it and the body portion 4.

That is, as shown in FIGS. 1, 3, and 4 as a concrete configuration example, in which two V-shaped parts are folded, a pair of piston pieces 2 divided into two on the diameter line.
1, 21 and these piston pieces 21, 21 are inserted into the recesses on the outer surface side of the projecting bottom portion 6 of the container 3 when the divided surfaces A of both piston pieces 21, 21 are closely joined to the tip end surface side. A head portion 22 having a substantially circular shape that can be fitted as closely as possible
Has ridges 21a and 21b that form the head portion 22 and
Is configured. And this raised portion 21
In the portions a and 21b, the two piston pieces 21 and 21 and the bearing portion 13a fixed to the tip of the piston rod 13 are connected to the shaft 2
3, each piston piece 21, 21 can be folded in two in a V shape within a range up to an angle θ about the shaft 23 as shown by a chain line in FIG.

The outer peripheral portion of each of the piston pieces 21, 21, ... Is a straight portion 21c, and the width T of the straight portion 21c is set to at least 6 mm so that good contact between the piston 20 and the body portion 3 of the container 2 is maintained. The contents in the container 2 can be more reliably poured out.

The piston rod 13 has such a stroke that the piston 20 at its tip can be advanced to a position protruding from the open end 12a at the tip of the cylindrical body 12 as shown in FIG. After pouring out the contents, the empty container 3 is pushed out from the open end 12a at the tip of the cylindrical main body 12.

Next, the operation of the above embodiment will be described.

When using the gun type dispenser 1,
The cap 2 at the tip of the tubular body 12 is removed, and the container 3 containing the content is inserted from the bottom end 6 side through the open end 12a at the tip of the tubular body 12. After inserting the container 3, the cap 2 is closed and the spout 5 of the container 3 is projected from the opening 17.

When the trigger lever 15 of the operating portion is gripped and the piston rod 13 is advanced by the ratchet mechanism after the setting as described above, the piston 20 at the tip of the piston rod 13 hits the bottom portion 6 of the container 3 and the piston piece 21 of the piston 20. ，
Reference numeral 21 extends in a disk shape and abuts the entire area of the bottom portion 6, and the head portion 22 of the piston 20 fits into the recessed portion on the outer surface side of the protruding bottom portion 8 of the container 3.

When the piston rod 13 is intermittently advanced in this manner, the groove 9 at the lower end of the body 4 of the container 3 and the container bottom 6 are
The boundary portion 9a of the above is first folded inward by the existence of the groove 9 and is evenly folded over the entire peripheral area by the existence of the protrusion 10. And piston 2
The content of 1 pitch of 0 is poured out from the spout 5.

As the forward movement of the piston 20 progresses, the body 4 of the container 3 is gradually folded as shown in FIG. 5 (A), and the body 4 is in close contact with each other so that the contents do not remain therebetween. It will be folded in and go.

When the pouring of the contents nears the end, FIG.
As shown in (B), the head portion 22 of the piston 20 reaches the inner surface of the pouring portion 5 of the container 3, and the piston 20 comes into close contact with the inner surface, so that the entire amount of the content is poured out.

When all the contents in the container 3 have been poured out as described above, the cap 2 of the gun-type dispenser 1 is removed, and then the piston rod 13 is further advanced to move the piston 20 of the cylindrical main body 12 forward. It projects outward from the open end 12a.

The container 3 emptied by this is the piston 2
As shown in FIG. 5C, it is exposed to the outside through the open end 12a at the tip of the tubular main body 12, and the periphery thereof can be grasped by hand and easily removed from the tubular main body 12. At this time, if the piston rod 13 is pulled back, each piston is rubbed by the friction between the outer peripheral ends of the pair of piston pieces 21 and 21 forming the piston 20 and the inner peripheral surface of the body 4 in which the container 3 is folded. The pieces 21 and 21 are bent in two folds with the shaft 23 as a fulcrum, and the outer diameter of the piston is reduced, so that the empty container 3 can be easily removed from the piston 20.

In the illustrated embodiment, for the sake of convenience, it is shown as a specific example of the invention described in claim 3. However, in the invention described in claim 1, the piston 20 can be implemented even if it is not necessarily constructed so that it can be folded in two. In the invention described in claim 2, the piston 20 is not limited to the dispenser in which the piston 20 does not protrude from the opening end 12a at the tip of the tubular body 12.

As for the piston 20, the case where the pair of piston pieces 21, 21 in the form of dividing a circle into two is folded is shown, but this is divided into three, four, or more. As an alternative, the petals can be closed when the piston 20 is pulled back.

[0044]

As described above, according to the first aspect of the present invention, the piston is emptied by opening the cap and advancing the piston rod when all the contents in the container have been poured out. Since it will protrude from the tip of the tubular body to the outside with the new container, you can easily take out the empty container by grasping and pulling out the empty container, and after taking out the empty container, return the piston rod and return the piston Since the container can be immediately put into operation by loading the container containing the contents into the cylindrical body and closing the cap, the container can be replaced with high efficiency.

According to the second aspect of the present invention, when the bottom of the container is pressed, the piston has a disk shape and the entire bottom can be pushed in. Therefore, the body of the container can be securely folded. When the piston is pulled back, the piston is gradually folded due to the frictional force between the disk-shaped peripheral surface of the piston and the empty body of the container, so that the piston can be pulled out with a light force.

According to the invention of claim 3, claim 1
Combined with the ease of taking out the empty container according to the invention described in (1) and the ease of withdrawing the piston according to (2), the replacement work of the container can be performed more easily and quickly.

According to the invention described in claim 4, when the bottom portion of the container is pushed by the piston, the bottom portion can be pushed into a state in which the bottom portion is in close contact with the inner surface on the spout side, whereby the contents in the container are pushed. Can be completely poured out until there is almost no.

According to the fifth aspect of the present invention, the piston can have a desired function as a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a cap of an embodiment of a gun type dispenser according to the present invention is removed.

FIG. 2 is a partial cross-sectional side view showing an example of a container used in the gun-type dispenser of FIG.

FIG. 3 is a side view of the piston in FIG.

FIG. 4 is a front view of the same.

5A to 5C are cross-sectional views showing the operation.

6A and 6B are explanatory sectional views showing a conventional technique.

[Explanation of symbols]

1 Gun dispenser 2 cap 3 containers 4 torso 5 spout 6 bottom 8 protruding bottom 9 groove 10 ridges 12 tubular body 13 Piston rod 14 fixed handle 15 Trigger lever 20 pistons 21 piston piece 22 Head

Claims (5)

[Claims] 1. A viscous liquid substance having an outlet part at one end,
A cylindrical main body capable of inserting the container made of a flexible material filled with the contents such as a paste-like material from the tip side opening end as closely as possible, and an opening through which the spout of the container can project. A cap having an open end of the tubular body that can be opened and closed, a piston that is pressed into the bottom of the container in the lengthwise direction of the container by a piston rod until the internal volume is almost exhausted, and this piston And a manipulating portion for pushing a piston rod mounted with a predetermined pitch at a predetermined pitch, wherein the piston is formed so as to be able to project from the tip of the tubular main body over a required distance. 2. A viscous liquid substance having a spout at one end,
A cylindrical main body capable of inserting the container made of a flexible material filled with the contents such as a paste-like material from the tip side opening end as closely as possible, and an opening through which the spout of the container can project. A cap having an open end of the tubular body that can be opened and closed, a piston that is pressed into the bottom of the container in the lengthwise direction of the container by a piston rod until the internal volume is almost exhausted, and this piston And a plurality of piston pieces that are extended by a frictional force between the peripheral surface of the piston and the container when the piston is pulled back. A gun-type dispenser characterized by being composed of. 3. A viscous liquid substance having a spout at one end,
A cylindrical main body capable of inserting the container made of a flexible material filled with the contents such as a paste-like material from the tip side opening end as closely as possible, and an opening through which the spout of the container can project. A cap having an open end of the tubular body that can be opened and closed, a piston that is pressed into the bottom of the container in the lengthwise direction of the container by a piston rod until the internal volume is almost exhausted, and this piston And an operating portion for pushing a piston rod mounted by a predetermined pitch, and the piston is formed so as to project over a required distance from the tip of the tubular main body, and is expanded into a disc shape when pushed. A gun-type dispenser comprising a plurality of piston pieces that are folded by a frictional force between a peripheral surface of the container and the container when the container is pulled back. 4. The piston fits as closely as possible to the outer surface of a protruding bottom portion formed inwardly with a cross-sectional shape similar to the inner surface shape of the end portion on the spout portion side at the bottom portion of the container. The gun type dispenser according to any one of claims 1 to 3, further comprising a head portion. 5. The gun dispenser according to claim 2, wherein the piston is composed of a pair of piston pieces that are folded in two on a diameter line.