JPH11333337A - Pouring container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the enlargement of hooking at the time of the operation of a nozzle head assembled freely ascendably and descendably at the upper end of a container main body, to improve its operability and also to attain the pouring of the contents well. SOLUTION: By combining a guide cylinder 31 of a fitting cap 3 constituting an assembled part to a container main body 1 and an inner cylinder 42 of a nozzle head 4 for operating a pump function part, a guide function part of the nozzle head 4 is constituted. Outside the guide function part, a recovery spring 5 is arranged for rising and recovering the nozzle head and even if at the time of lowering and operating of the nozzle head 4, hooking in the guide function part occurs, this is made naturally to disappear, to obtain the smooth and safe pouring operation of a content liquid and also to maintain a good pumping function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing container for discharging a content liquid without sucking outside air into a container containing a high viscosity content liquid.

[0002]

2. Description of the Related Art A high-viscosity content liquid such as an anaerobic cosmetic liquid or a toothpaste is stored, and the content liquid is discharged by a pressing operation on a nozzle head having a pump function, and the volume of the discharged content liquid is integrated. However, by reducing the content liquid storage volume in the container body, preventing the occurrence of decompression due to the discharge of the content liquid without sucking in outside air, a pour container that maintains a good content liquid pour operation is Are known.

[0003] A typical example of the construction of this dispensing container is a container body having an equal diameter cylindrical shape in which a nozzle head having a pump function is mounted at the upper end so as to be able to move up and down to operate a pump function part located at the center. Then, a bottom cover is fitted and assembled so as to be able to slide closely along the axial direction, and the content liquid is stored in a container main body above the bottom cover.

In the above arrangement, when the nozzle head is pushed down to discharge the content liquid, and a substantially constant amount of the content liquid is sucked into the nozzle head from the inside of the container body by a return operation of the return spring of the nozzle head, the content is discharged. Due to the decompression generated in the container body due to the suction of the liquid, the bottom cover is displaced upward, the volume of the content liquid stored in the container body is reduced by the volume of the content liquid sucked up by the nozzle head, and the generated decompression is reduced. The liquid is extinguished so that the subsequent operation of discharging the content liquid can be smoothly performed.

[0005] With this conventional dispensing container, it is possible to achieve the dispensing of the content liquid without sucking in the outside air while maintaining the external shape of the container constant, so that the preferable external appearance of the container is maintained. There is an advantage that a constant good use state can be maintained without deteriorating the quality of the content liquid.

[0006]

However, in the above-mentioned prior art, the guide for raising and lowering the nozzle head with respect to the container body is assembled with the outermost cylindrical body of the nozzle head and the container body. This is achieved by the sliding contact fitting with the cylindrical body provided in the fixed part, so that the return spring and the guide function are located outside in order with respect to the center pump function, so that the nozzle When the nozzle head is tilted and the guide function part is caught during the operation of ejecting the liquid that pushes down the head, the central pump function part does not allow lateral displacement. There is a problem that the spring force acts in a direction to increase the hooking, which causes poor operability of pushing down the nozzle head and easily causes backlash.

In addition, since the spring force of the return spring acts in the direction of increasing the catch of the guide function portion, an irregularly high operating force is required accordingly.
The problem is that the strong operating force acts non-uniformly on the piston of the pump function portion due to the hooking, thereby deteriorating the sealing function of the piston, or in some cases, partially losing the sealing function, thereby deteriorating the pump function. was there.

Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and it is possible to prevent the nozzle head, which is assembled at the upper end of the container main body, from being caught during operation, from being caught up. It is an object of the present invention to improve the operability, and at the same time, to properly discharge the content liquid.

[0009]

Means for Solving the Problems Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention is a container body having an equal diameter cylindrical shape having a reduced-diameter opening at the upper end. Having a bottom lid fitted tightly slidably along the axial direction inside the container body, a guide cylinder inside the assembled cylinder attached to the mouth of the container body, A mounting cap having an engaging cylinder connected to each other via a flange portion. An upper end is fixed to the mounting cap. The mounting cap is disposed below a guide cylinder of the mounting cap. Having a cylinder communicating with the body,
On the lower surface of the top wall, there is provided a nozzle head, which is provided with an inner cylinder slidingly in contact with a guide cylinder of the mounting cap and an outer cylinder engaged with the engaging cylinder of the mounting cap so as not to come out, and assembled to the mounting cap so as to be able to move up and down. Having a piston guide in the form of a bottomed cylinder with the upper end fixed to the inner cylinder of the nozzle head and located in the cylinder and having a plurality of liquid holes in the peripheral wall, and a liquid content from the cylinder to the piston guide To have a ring-shaped soft elastic material piston disposed so as to be able to close and slide with respect to the cylinder, and to be able to contact and separate from the piston guide to open and close the flow path of the nozzle. On the other hand, at a position outside the inner cylinder of the nozzle head and the guide cylinder of the mounting cap, a return spring that urges upward is provided, and the piston that moves up and down together with the piston guide is Relative pattern guide, open the flow path and away during descent, closely to close the flow path structure and the possible at elevated lies.

The guide cylinder of the mounting cap and the inner cylinder of the nozzle head slidingly in contact with the guide cylinder constitute a guide function section for guiding the elevation movement of the nozzle head with respect to the mounting cap, and are provided outside the guide function section. Since the spring force of the return spring, that is, the force opposing the depression of the nozzle head acts on the portion, even if the nozzle head is tilted due to the depression of the nozzle head and the guide function portion is caught, the return spring is The spring force does not promote this catching and disappears with slight catching.

As described above, even if the nozzle head is tilted and the like, and the guide function portion is caught, by continuing to push down the nozzle head,
Because this push naturally disappears,
The nozzle head can be smoothly lowered and displaced.

Further, since a non-uniform force in the lateral direction due to the inclination of the nozzle head does not strongly act on the piston of the pump function part, the piston made of a soft elastic material is deformed illegally and the sealing function is deteriorated. It does not mean that the seal function is lost or partially lost due to damage.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, an intermediate cylinder, which is in sliding contact with the cylinder with the mounting cap, is suspended from the lower surface of the top wall of the nozzle head. In addition.

According to the second aspect of the present invention, the guide function portion is constituted by the combination of the guide cylinder and the inner cylinder and the combination of the assembled cylinder and the intermediate cylinder located outside the combination. The degree of inclination of the nozzle head with respect to the mounting cap can be restricted structurally small, and the downward displacement of the nozzle head becomes smoother and more stable.

According to a third aspect of the present invention, in the configuration of the first aspect of the present invention, the return spring is constituted by a coil spring which is externally mounted on a guide cylinder of a mounting cap located inside the mouth of the container body. Is added.

According to the third aspect of the present invention, since the return spring is constituted by a coil spring which is mounted on a guide cylinder positioned inside the mouth of the container body, at least the coil spring which constitutes the return spring has at least It has a small diameter that can be inserted into the mouth of the container body, and the small diameter allows the coil spring used as the return spring to be inexpensive and easy to handle.

According to a fourth aspect of the present invention, in the configuration of the first aspect of the present invention, a cylinder located in the mouth of the container body is provided.
It is added that the lower portion of the cylinder is disposed so as to protrude into the body of the container body.

According to the fourth aspect of the present invention, since the lower portion of the cylinder is projected into the body of the container body, most of the pump function part can be located in the container body. The height dimension of the portion of the dispensing function portion including the above, which is located on the container body, is reduced, and the entire dispensing container can be made compact by keeping its height dimension small.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The dispensing container is provided in a rigid synthetic resin container body 1 having an equal diameter cylindrical shape having a nozzle head 4 with a pump function attached to the upper end thereof via a mounting cap 3.
The bottom cover 2 is fitted and assembled so as to be slidable along the axial direction, and the contents are stored in the upper container body 1 of the bottom cover 2.

The mounting cap 3 is composed of a guide tube 31, a short tube 32, an assembled tube 33, and an engagement tube 34, which are connected in sequence from the inside through a flange portion. Is screwed and assembled to the mouth portion 11 erected at the upper end of the container body 1 with a reduced diameter.

The nozzle head 4 has a discharge nozzle 41 at the front end.
The inner cylinder 42, the intermediate cylinder 43 and the outer cylinder 4
The inner cylinder 42 is in sliding contact with the guide cylinder 31 of the mounting cap 3, the intermediate cylinder 43 is in external sliding contact with the assembled cylinder 33, and the outer cylinder 44 is in the engagement cylinder 34.
And is assembled to the mounting cap 3 so as to be able to move up and down, and is disposed between the top wall and the flange portion of the mounting cap 3 that connects the guide tube 31 and the short tube 32. It is urged upward by a coil spring serving as a return spring 5.

The upper end of the cylinder 6 is fixed to the mounting cap 3 and located below the guide tube 31. The lower part is disposed in the body of the container body 1, and the lower end is a check valve 61. Through the container body 1.

The bottomed cylindrical piston guide 7 whose upper end is fixed to the inner periphery of the inner cylinder 42 of the nozzle head 4 has a plurality of liquid holes 71 formed in the peripheral wall thereof. An annular convex portion is provided on the lower side, a piston receiving groove 72 is provided on the upper surface of the annular convex portion, and a plurality of liquid grooves 73 are formed on the outer periphery of the annular convex portion.

The piston 8 is formed in a ring shape having a substantially H-shaped cross section by an elastic material, and is disposed between the piston guide 7 and the cylinder 6 so as to be slidable in the axial direction.

That is, the outer peripheral surface of the piston 8 comes into sliding contact with the inner peripheral surface of the cylinder 6 and the upper cylindrical piece 8 on the inner peripheral side.
1 is in sliding contact with the inner peripheral surface of a guide cylinder piece 45 formed thin at the lower end of the inner cylinder 42 of the nozzle head 4, and the lower end of the lower cylinder piece 82 is shown in FIG. At the ascending limit position of the nozzle head 4, the nozzle head 4 engages with the piston receiving groove 72 to block the pressurizing chamber 9 in the cylinder 6 from the inside of the nozzle head 4.

The pressurizing chamber 9 is provided with a check valve 6 in the cylinder 6.
1, a space closed by the lower end of the piston guide 7 and the piston 8 and filled with contents.

When the nozzle head 4 is pushed down from the state shown in FIG. 1, the contents in the pressurizing chamber 9 are pressurized by the lower surface of the piston guide 7 which descends integrally with the nozzle head 4, so that the hydraulic pressure is reduced. As a result, the piston 8 is relatively pushed up and separates from the piston receiving groove 72 as shown in FIG. 2, and as a result, the contents are pressure-fed into the nozzle head 4 through the liquid groove 73 and the liquid hole 71 and the like. , And is discharged from the discharge nozzle 41.

After the nozzle head 4 is pushed down to the lower limit and a certain amount of the contents in the pressurizing chamber 9 is poured out, the nozzle head 4 is released. Since the guide 7 and the guide 7 are integrally raised, the lower tubular piece 82 of the piston 8 is engaged with the piston receiving groove 72 of the piston guide 7 again, and shuts off the inside of the pressurizing chamber 9 and the inside of the nozzle head 4.

In this state, when the nozzle head 4, the piston guide 7, and the piston 8 rise integrally, the pressure in the pressurizing chamber 9 becomes negative, so that the check valve 61 is opened and the contents in the container body 1 are removed. It is sucked into the pressure chamber 9.

Then, the bottom cover 2 is displaced upward by the decompression generated in the container body 1 due to the suction of the contents,
The content storage volume in the container body 1 is reduced by the volume of the content sucked into the pressurizing chamber 9, so that the generated decompression is eliminated, and the subsequent operation of discharging the content can be smoothly performed. To

[0031]

Since the present invention has the above-described structure, the following effects can be obtained. Since the guide function portion for raising and lowering the nozzle head, which is composed of a combination of the guide cylinder of the mounting cap and the inner cylinder of the nozzle head, is located inside the return spring, when the nozzle head descends, for example, Even if the trap is caused by the inclination of
By continuing to push down the nozzle head, this catching can be eliminated naturally, so that a smooth and stable pushing down operation of the nozzle head, that is, an operation of pouring out the content liquid can be obtained.

Even if the guide function portion is caught by the inclination of the nozzle head, the spring force of the return spring acts in a direction to eliminate the catch, so that the wrong force in the lateral direction due to the catch causes the piston in the pump function portion to lose its force. Therefore, the high sealing function of the piston is stably held, and the pump function can be safely maintained for a long period of time.

According to the second aspect of the present invention, the inclination generated when the nozzle head is pushed down can be structurally suppressed to a small degree, so that the guide function portion caused by the inclination of the nozzle head is slightly caught. Therefore, a smoother and better operation of discharging the content liquid can be obtained.

According to the third aspect of the present invention, the coil spring constituting the return spring has a small diameter that can be inserted into the mouth of the container main body. Handling becomes easy.

According to the fourth aspect of the present invention, the height of the portion of the pouring function portion including the nozzle head located on the container body can be reduced, so that the diameter of the container is not changed. In addition, the height can be reduced and the compactness can be suitably achieved, and the appearance of the dispensing container as a product can be made preferable.

[Brief description of the drawings]

FIG. 1 is an overall semi-longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is an enlarged semi-longitudinal sectional view of a main part of the embodiment shown in FIG. 1 when the nozzle head is pushed down.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Container main body 11; Mouth 2; Bottom lid 3; Mounting cap 31; Guide cylinder 32; Short cylinder 33; Assembled cylinder 34; Engagement cylinder 4; Cylinder 44; Outer cylinder 45; Guide cylinder piece 5; Return spring 6; Cylinder 61; Check valve 7; Piston guide 71; Liquid hole 72; Piston receiving groove 73; Liquid groove 8; Piston 81; Tube piece 9; Pressurizing chamber

Claims (4)

[Claims] 1. An equal-diameter cylindrical container body (1) having a reduced-diameter mouth (11) at the upper end thereof, and a finely slidable along the axial direction inside the container body (1). The bottom cover (2) fitted to the, the guide tube (31) inside the assembled tube (33) to be assembled to the mouth (11),
A mounting cap (3) in which engaging cylinders (34) are connected to each other via flanges, and an upper end fixed to the mounting cap (3), and disposed below the guide cylinder (31); A cylinder (6) having a lower end communicating with the inside of the container body (1) via a check valve (61), and an inner cylinder (42) slidingly contacting the guide cylinder (31) on the lower surface of the top wall; An outer cylinder (44) which is irremovably engaged with the engagement cylinder (34) is provided in a hanging manner, and the mounting cap (3) is provided.
A nozzle head (4) that can be ascended and descended, and a bottomed cylinder that has an upper end fixed to the inner cylinder (42) and is located in the cylinder (6), and has a plurality of liquid holes (71) in the peripheral wall. Shaped piston guide
(7) and the cylinder (6) so as to be able to slide tightly against the cylinder (6) and open and close the flow path of the content liquid from the inside of the cylinder (6) into the piston guide (7). ), A ring-shaped piston made of a soft elastic material (8), which is provided so as to be able to contact and separate from it, and the nozzle head (4).
A return spring (5) biased upward at a position outside the inner cylinder (42) and the guide cylinder (31).
A piston (8) that moves up and down together with the piston guide (7)
A dispensing container having a configuration in which the flow path is opened with respect to the piston guide (7) at the time of descending to open the flow path, and closes at the time of ascending to close the flow path. 2. An intermediate cylinder (4), which is in sliding contact with the assembled cylinder (33) of the mounting cap (3) on the lower surface of the top wall of the nozzle head (4).
3. The dispensing container according to claim 1, wherein 3) is suspended. 3. The return spring (5) is connected to the mouth (1) of the container body (1).
Guide tube (31) of mounting cap (3) located inside 1)
3. The dispensing container according to claim 1, wherein the dispensing container is constituted by a coil spring which is externally provided. 4. A cylinder (6) located in a mouth (11) of a container body (1), and a lower portion of the cylinder (6) is connected to the container body (1).
4. The dispensing container according to claim 1, wherein the container is arranged so as to protrude into the body of (1).