JPH06298269A - Method for providing actuation member with cylindrical piston and delivery valve plate - Google Patents

Abstract

PURPOSE:To reduce the number of part form at a low cost, by forming a part in which a cylindrical piston and a delivery valve are integrated, in a container, as for cream, designed so as to prevent the production of negative pressure in the cylindrical body of the container resulting from the rising of a slidable bottom plate fitted within the bottom of the cylindrical body. CONSTITUTION:A container is comprised of: a body 1 in which a cylinder 8 is erected from the central part of a top plate 6, around a fixing peripheral wall 7 from the edge of the top plate 6 of the cylindrical body 5 of the contaner; a guide member 2, in the form of a cap, which is fitted around the fixing peripheral wall 7 and is hollowed inward around a hole in the central part of the top plate 12 to form internal and external guide cylinders 13 and 14; and an operation member 3 which has an extraction cylinder 16 for inserting and guiding the upper part as a nozzle pipe 15 into the internal guide cylinder 13 by bending it obliquely upwards. The container is further comprised of a piston member 4, in the form of a cylinder, which fits on the outside of the extraction cylinder 16 so that its periphery is in contact with the inside of the cylinder 8 and which integrally forms an delivery valve 20, as one component, fracturably fitted inside the extraction cylinder 16 via a fracturable piece 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a creamy substance dispensing container for dispensing a stored creamy substance under pressure.

[0002]

2. Description of the Related Art This type of container is provided with a creamy substance storage chamber at the top of the container body, pressurizes the creamy substance in the storage chamber, and opens the discharge valve with the pressurized creamy substance. This is to prepare for the next pouring, by pouring out to the outside and then opening the suction valve due to the negative pressure in the storage chamber due to this pouring, sucking and replenishing the creamy substance from the container body to the storage chamber. As well known as the suction and discharge means, there are an elastic dome shape and a cylinder shape.

[0003]

The cylinder type has the advantage that the restoring force can be set as required and therefore the amount of pouring can be increased as compared with the elastic dome type, but the cylindrical piston, the return spring, and the A guide member for guiding the operation member that pushes down the piston against the return spring is required, and the number of parts is large and the cost is increased.

The present invention is to obtain a creamy product pouring container intended for cost reduction, in which the number of parts is reduced by forming the cylindrical piston and the discharge valve in one part in the cylinder type.

[0005]

In the creamy substance dispensing container of the present invention, a peripheral wall 7 for mounting is provided upright from the peripheral edge of a top plate 6 of a straight tubular container body 5, and a cylinder 8 is provided upright from the central portion.
A bottom lid 11 is provided on the top plate 6 of the cylinder 8 to which a suction hole 9 is opened and a suction valve 10 is attached, and which is liquid-tightly movable up and down on the body 5.
The main body 1 in which is fitted and the cap-shaped top plate 12 mounted on the mounting peripheral wall 7 and located on the upper surface of the cylinder 8 is opened at the central portion thereof, and an upward circumferential groove is formed around the opening. It has a guide member 2 in which the inner and outer guide cylinders 13 and 14 are formed by being bent in a concave shape, and a spout cylinder 16 which is bent obliquely upward with the upper portion as a nozzle tube 15 and is inserted and guided in the inner guide cylinder 13. ,
Engagement tube that fits inside the outer guide tube 14 in the outer circumference of the pouring tube 16
A push-down operating member 3 which is provided with a return spring 18 and which is always pushed upward by a return spring 18; and a tubular shape, which is externally fitted and fixed to the pouring cylinder 16 so that the outer peripheral surface is inscribed in the cylinder 8. In addition, the discharge valve 20 fitted in the spout 16 through the breakable fragment 19 is integrally formed with the piston member 4 as one component.

[0006]

In the above description, as shown in FIG. 1, the push-down operation member 3, and thus the cylindrical piston member 4, is always provided with the return spring.
It is pushed up to the upper limit position at 18.

Here, in order to pour out the creamy material, the piston member 4 is pressed against the return spring 18 via the push-down operation member 3.
Just press down. Then, the creamy substance in the cylinder 8 is pressurized, so the discharge valve 20 is opened and the dispensing cylinder is opened.
It is poured out from 16 nozzle tubes 15.

When the pushing down of the push-down operation member 3 is stopped after the pouring out, this member 3, and therefore the piston member 4, is also returned by the return spring.
The state shown in the figure is restored by 18, and the negative pressure in the cylinder 8 is restored by this restoration, so the suction valve 10 opens and the container body 5
The cream-like substance inside is sucked up into the cylinder 8, and the suction causes the inside of the body 5 to become negative pressure, so that the bottom lid plate 11 moves upward.

[0009]

[Embodiment] The creamy substance dispensing container of the present invention comprises a main body 1,
It is composed of four main members, a guide member 2, a push-down operation member 3 and a piston member 4, and the components are a suction valve 10 and a bottom lid 11.
And a return spring 18 are added.

The main body 1 is a top plate 6 of a straight tubular container body 5.
A peripheral wall 7 for mounting is erected from the peripheral edge of the cylinder, and a cylinder 8 is erected from the center of the cylinder. A top plate 6 in the cylinder 8 is recessed downward, and a suction hole 9 is opened in the center of the recessed top plate 6. 9 Suction valve of elastic plate valve with check function on the top surface 10
Is provided, an engaging projection 21 is provided on the outer surface of the peripheral wall 7, and a bottom lid 11 capable of moving up and down in a liquid-tight manner is internally fitted and attached to the body 5. The bottom lid 11 is shaped like a pan, and an elastic peripheral wall 22 having an arcuate cross section is attached to the inner surface of the body 5 by pressing. Reference numeral 23 indicates a groove for bleeding air on the inner surface of the body 5.

The guide member 2 is provided with an engaging projection 24 that engages with the engaging projection 21 and bulges the top plate 12 upward from the peripheral wall 25 fitted and fixed to the peripheral wall 7 into a spherical shape. A hole is formed in the central portion of 12 and the inner and outer guide cylinders 13 and 14 are formed by bending upwardly around the hole to form a concave groove. The bottom surface of the recessed portion rides on the upper end of the cylinder 8, and the inner guide tube 13 has a smaller diameter than the cylinder 8.

The push-down operation member 3 has a blade-shaped lower end of the straight cylindrical portion 26 which is guided by being inserted into the inner guide cylinder 13.
27 The outer peripheral surface of the immediately upper portion is cut into a strip shape to form a mounting concave portion, and has a spouting tube 16 that projects the nozzle tube 15 in an obliquely upward direction from the upper part of the straight tube portion 26. An engagement cylinder 17 that is fitted in the outer guide cylinder 14 and is guided up and down is provided, and is constantly pushed up by a coil-shaped return spring 18. 28
Is a stopper plug inserted in 15 nozzle tubes.

The piston member 4 has a cylindrical shape fitted to the outer surface of the lower portion of the spout tube 16, and has a strip-shaped projecting band 29 that engages with a mounting recess on the outer surface of the lower portion of the spout tube 16, on the inner peripheral surface thereof. Further, an elastic peripheral wall 30 having an arcuate cross section is provided on the outer peripheral surface, and the elastic peripheral wall 30 is pressed against the inner surface of the cylinder 8 to be airtight. The upper end of the piston member 4 abuts and locks against the lower surface of the inner guide cylinder 13 in a state where the piston member 4 is externally fitted and fixed to the lower portion of the spout cylinder 16, and defines the upper limit position for pushing up.

The piston member 4 is integrally formed with a discharge valve 20 which is internally fitted and attached to the lower portion of the pouring cylinder 16 by a thin broken piece 19 at the lower end. This discharge valve
Reference numeral 20 is an elastic plate piece having a non-return function in which a disc-shaped valve element is provided in an upper opening of a short tubular base body. The fractured pieces 19 may be provided in a discrete manner in the circumferential direction, or may be a donut-shaped surface piece. This fragment 19 is the piston member 4
When the sack is attached to the dispensing cylinder 16 from below, the blade 27 at the lower end of the dispensing cylinder 16 may be broken. However, it may be broken by using another suitable jig or the like before mounting. Further, if the discharge valve 20 can be firmly fitted and fixed to the pouring tube 16 without coming off without being broken and separated, it is not always necessary to separate the both. 31 is a cap.

The above-mentioned parts are molded and made of synthetic resin.

[0016]

As described above, according to the present invention, the discharge valve 20 is integrally formed as one component through the breakable fragment 19 in the tubular piston member 4, and when the discharge valve 20 is attached to the spout cylinder 16, the breakage may occur if necessary. Since the fragments 19 are broken and separated, the number of parts is reduced, which is convenient in terms of production and quality control. Moreover, since the piston member 4 has a relatively simple shape, it can be easily formed and manufactured, and the cost can be reduced. Down is possible.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the container of the present invention.

FIG. 2 is a plan view of the embodiment with a cap removed.

FIG. 3 is an exploded perspective view of a push-down operation member and a piston member of the same embodiment.

FIG. 4 is an enlarged vertical sectional view of the piston member of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body part 2 ... Guide member 3 ... Push-up operation member 4 ... Piston member

[Procedure amendment]

[Submission date] January 12, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Method of attaching cylindrical piston and discharge valve plate to actuating member

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a cylindrical piston and a discharge valve plate to an operating member.

[0002]

2. Description of the Related Art A variety of creamy substance dispensing containers are known in which a creamy substance in a cylinder is pressurized by pushing down a head with a nozzle and is poured out from a nozzle.
For example, in the container described in Japanese Utility Model Laid-Open No. 61-11571, the body of the lower end surface opening is hung from the peripheral edge of the upper surface wall, the cylinder from the central portion of the upper surface wall, and the mounting cylinder from the peripheral edge of the upper surface wall. Standing container body, the nozzle is erected from the cylindrical piston fitted to the inner surface of the cylinder through the stem,
An operating member having an outer cylinder fitted to the upper outer surface of the nozzle, a coil spring for urging the operating member upward, a discharge valve formed on the inner bottom of the cylinder, and a discharge valve formed on the tip of the nozzle. And a bottom lid that is fitted on the inner surface of the lower portion of the container body so as to be slidable upward due to negative pressure in the body.

[0003]

However, the above-mentioned conventional container is formed of eight members such as a container body, a cylindrical piston, and a nozzle, and has a large number of parts. It was a disadvantage.

According to the present invention, the cylindrical piston and the discharge valve plate are integrally molded, and the integrally molded product is separated at the time of mounting on the operating member, so that the number of steps for assembling the parts is simplified.

[0005]

A cylinder is erected from a central portion of a top plate of a straight cylindrical body, a suction valve is formed at a bottom portion of the cylinder, and a bottom lid is slidable and watertight on a lower inner surface of the body. The stem is erected from the main body fitted to the above and the inner surface of the cylindrical piston watertightly fitted to the upper inner surface of the cylinder, the discharge valve plate is attached inside the stem, and the nozzle is attached to the upper end of the stem. Attach the pressing head,
In a creamy substance dispensing container composed of an actuating member biased upward by a return spring, the tubular piston 27 is provided on the lower outer surface of the outer tubular portion 25 for fitting the outer surface of the stem, and the discharge valve plate 28 is provided on the inner surface of the stem. The upper end of the inner cylinder portion 26 for fitting is seated on the upper end surface of the inner cylinder portion and attached thereto, and the lower end inner surface of the outer cylinder portion 25 and the lower end outer surface of the inner cylinder portion 26 are connected by the connecting portion 32. The valve-equipped piston portion 33 is integrally molded in advance with a soft synthetic resin material, and the lower portion of the stem 21 is forcibly pushed between the outer surface of the inner tubular portion 26 and the inner surface of the outer tubular portion 25, thereby lowering the stem. The connecting portion 32 is broken by the breaking edge 23 that has been formed, and the inner tubular portion 26 is fitted to the lower inner surface of the stem 21 and the outer tubular portion 25 is fitted to the lower outer surface of the stem 21, respectively.

[0006]

EXAMPLES First, a creamy substance dispensing container formed by carrying out the mounting method of the present invention will be described.

Reference numeral 1 denotes a container body, which comprises a peripheral body 4 of a straight cylindrical body 2, a peripheral wall 4 for mounting, and a top plate 3.
Cylinders 5 are erected from the central portions, suction holes 6 are formed in the top plate 3 portion in the cylinders, suction valve plates 7 are arranged on the upper surfaces of the suction holes, and the upper part of the mounting peripheral wall 4 is attached. A first engaging projection 8 is attached to the outer surface, and a bottom lid 9 is fitted to the inner surface of the lower portion of the body 2 so as to be watertight and capable of sliding upward due to negative pressure in the body 2. A shallow groove 10 is vertically provided on the inner surface of the lower part of the body for venting air from the inside of the body when the bottom lid is fitted.

Reference numeral 12 is a guide member, and the guide member is provided with a second engaging protrusion 13 which engages with the lower surface of the first engaging protrusion 8 and is externally fitted and fixed to the mounting peripheral wall 4 described above. A dome-shaped wall 15 is attached to the upper end of the mounting cylinder 14, and a central portion of the dome-shaped wall is opened,
The inner and outer guide cylinders 16 and 17 are formed by bending concaves in the upward circumferential groove around the opening, and the lower surface of the wall portion between the inner and outer guide cylinder lower ends is placed on the upper end of the cylinder 5 described above. I am letting you.

Reference numeral 19 denotes an actuating member, which comprises a head 20 with a nozzle, an outer cylinder portion 25 with a cylindrical piston and an inner cylinder portion 26 with a discharge valve plate. The head 20 with a nozzle uses the upper portion as a nozzle. It has a stem 21 that is bent obliquely upward and is inserted and guided through the inner guide tube 16 described above. The stem 21 is extended to the inside of the upper portion of the cylinder 5 described above, and is attached to the outer surface of the lower end of the extension portion 21a. The lower end of the stop projection 22 is a breaking edge 23,
In addition, an engagement cylinder 24 that is hung from the upper portion of the stem 21 through a projecting wall is fitted to the inner surface of the upper portion of the outer guide cylinder 17 described above.
Further, an outer cylinder portion 25 having an outer diameter larger than the inner diameter of the inner guide cylinder 16 described above is provided on the outer surface of the extension portion 21a, and an inner cylinder portion 26 is provided on the inner surface of the extension portion 21a.
Are respectively fitted, and a cylindrical piston 27 is attached to the lower outer surface of the outer tubular portion 25, and a discharge valve plate 28 having the upper end surface of the inner tubular portion as a valve seat is attached to the upper end of the inner tubular portion 26, Further, the lower portion of the outer tubular portion 25 is made a small inner diameter portion, and the lower end surface of the small inner diameter portion is engaged with the upper surface of the locking projection 22.

Reference numeral 29 is a coil spring for urging the actuating member 19 upward, 30 is a lid for closing the nozzle, and 31 is an outer surface of the small outer diameter portion above the mounting cylinder 14 from the periphery of the top wall. It is a cap in which the lower part of the vertically extending peripheral wall is fitted.

Next, a method of attaching the cylindrical piston 27 and the discharge valve plate 28 to the actuating member 19 will be described. As shown in FIG. 4, the inner surface of the lower end of the outer cylinder portion 25 with the cylindrical piston 27 and the discharge valve plate are shown. The valve-equipped piston member 33 in which the lower end outer surface of the inner tubular portion 26 with 28 is connected by the connecting portion 32 is integrally molded in advance with a soft synthetic resin material, and is provided between the outer surface of the inner tubular portion 26 and the inner surface of the outer tubular portion 25. By forcibly pushing the extension portion 21a, the connecting portion 32 is broken at the breaking edge 23 at the lower end of the extension portion,
The inner cylinder portion 26 is extended to the inner surface of the extension portion 21a, and the outer cylinder portion 25 is extended to the extension portion 21a.
The cylindrical piston 27 and the discharge valve plate 28 are attached to the actuating member 19 by fitting them to the outer surface of the a.

[0012]

As described above, the present invention provides the cylindrical piston 27.
Is seated on the lower outer surface of the outer cylinder part 25 for fitting the stem outer surface, and the discharge valve plate 28 is seated on the upper end surface of the inner cylinder part 26 for fitting the stem inner surface on the upper end surface of the inner cylinder part. The valve-equipped piston portion 33 in which the lower end inner surface of the outer tubular portion 25 and the lower end outer surface of the inner tubular portion 26 are connected by the connecting portion 32 is integrally formed in advance with a soft synthetic resin material, and the outer surface of the inner tubular portion 26 and Outer cylinder 25
By forcing the lower portion of the stem 21 between the inner surface and the inner surface, the breaking edge 23 formed at the lower end of the stem 21
By breaking the connecting portion 32, the inner tubular portion 26 is fitted to the lower inner surface of the stem 21, and the outer tubular portion 25 is fitted to the lower outer surface of the stem 21, respectively, so that the tubular piston 27 and the discharge valve plate 28 Can be attached to the actuating member 19 at once, thus
The number of steps required for assembling the parts is simplified, and the creamy product pouring container with a pump mechanism can be formed at low cost.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a creamy substance dispensing container formed by carrying out the attachment method of the present invention.

FIG. 2 is a plan view showing the container of FIG. 1 with a cap removed.

FIG. 3 is a perspective view of an operating member and a piston member with a valve before the container is assembled.

FIG. 4 is a vertical cross-sectional view of a valved piston member.

[Explanation of Codes] 1 ... Container 12 ... Guide member 19 ... Actuating member 33 ... Piston member with valve

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 1]

Claims (1)

[Claims] 1. A straight cylindrical container body 5 is provided with a mounting peripheral wall 7 extending from a peripheral edge of a top plate 6 and a cylinder 8 standing from a central portion, and a suction hole 9 is opened in the top plate 6 of the cylinder 8 for suction. It is a cap-shaped member which is attached to the main body 1 in which a valve 10 is attached and a bottom lid 11 capable of moving up and down in a liquid-tight manner in a body 5 is fitted, and a peripheral wall 7 for attachment, which is located on the upper surface of the cylinder 8. A guide member 2 in which a central portion of the top wall 12 is opened, and the circumference of this opening is bent upward in a circumferential groove shape to form inner and outer guide cylinders 13 and 14, and an upper portion is bent obliquely upward as a nozzle tube 15 Then, there is a spouting tube 16 that is inserted and guided through the inner guide tube 13, and an engaging tube 17 that fits inside the outer guide tube 14 is provided on the outer circumference of the spouting tube 16 and is constantly raised by a return spring 18. The push-down operation member 3 pushed up to the front and the cylinder-shaped outer peripheral surface of the cylinder 8 are inscribed inward. A cream-like substance pouring consisting of a piston member 4 integrally formed as one component with a discharge valve 20 which is externally fitted and fixed to the pouring pipe 16 and is fitted inside the pouring pipe 16 through a breakable fragment 19. Out container.