WO2013099257A1

WO2013099257A1 - Push-type pump dispenser and f-valve structure mounted in same

Info

Publication number: WO2013099257A1
Application number: PCT/JP2012/008362
Authority: WO
Inventors: 多田　哲也
Original assignee: Tada Tetsuya
Priority date: 2011-12-28
Filing date: 2012-12-27
Publication date: 2013-07-04
Also published as: JP2015044592A

Abstract

[Problem] To provide an F-valve structure in which a nozzle head moves vertically in a sufficiently stable manner because a spring body for returning the nozzle head does not move and deflect and which can be mounted easily. [Solution] This F-valve structure comprises an F-valve (13) and a return spring (10) which is integrally connected to the F-valve (13). The return spring (10) is provided with a wave plate spring (12), and a bend prevention section (11) is provided to an end of the wave plate spring (12).

Description

Push-type pump dispenser and F-valve structure incorporated therein

The present invention relates to a push-type pump dispenser, and more particularly to a push-type pump dispenser that is easy to assemble and that has a sufficiently stable movement of a spring body to obtain a restoring force.

Conventionally, a pump dispenser is known as a device for spraying a liquid contained in a container to a desired position.
Such a pump dispenser includes a piston and a cylinder for applying pressure to the liquid, and is a device that moves the piston to discharge the liquid from the nozzle opening.
Pistons are moved via a trigger or directly, but many developments have been made including improvements.

By the way, in the pump dispenser of the type that pushes down the nozzle head 5 and discharges, a bullet is incorporated in order to return the nozzle head to its original state after being pushed down.
As this projectile, a coil spring is mainly used, but a corrugated spring is sometimes used from the viewpoint of durability and strength (see Patent Document 1).

In the case of this corrugated spring, a corrugated spring made of plastic material is mainly used from the viewpoint of cost and the like. However, since the corrugated spring is plate-like unlike the coil spring, it is a plan view (that is, from the length direction). The area is small when viewed).
Therefore, when it is incorporated, it may rattle and bend in the lateral direction (perpendicular to the length direction).
That is, it deviates from the axial line in the compression direction.
In particular, when the upper end moves up and down together with the piston with the upper and lower ends of the corrugated spring being in contact with the cylinder and the piston, the corrugated spring deviates from the axis in the compression direction.
As a result, the corrugated spring becomes unstable and becomes unstable.

When the corrugated spring is in such a state, when the nozzle head 5 is pushed down, the pushing force becomes uneven, and the vertical movement of the nozzle head 5 is not always sufficiently stable.
On the other hand, when the corrugated spring is picked up during installation, the opposite side is likely to swing, and positioning is difficult when trying to put it in the piston.

JP 2007-8505 A

The present invention has been made in the context of the above circumstances.
That is, an object of the present invention is to provide a pump dispenser in which the spring body for returning the nozzle head does not swing, the vertical movement of the nozzle head is sufficiently stable, and easy to incorporate.
Furthermore, it is providing the F valve structure incorporated in it.

The present inventor has intensively studied to solve the above problems, and found that the problem can be solved by intentionally providing an anti-bending portion at the upper end of the corrugated spring, and this is used as a hint to complete the present invention. It came.

The present invention comprises (1) an F valve portion 13 and a return spring portion 10 integrally connected to the F valve portion 13, and the return spring portion 10 includes a corrugated leaf spring portion 12 at an end portion thereof. It exists in the F valve structure for push type pump dispensers in which the curvature prevention part 11 is provided.

The push type according to the above (1), wherein (2), the curving prevention part 11 is an integral part of the donut part 11A, the notch base part 11C, and the notch hollow body part 11B between them. It exists in the F valve structure for pump dispensers.

The present invention resides in (3) the F-valve structure for a push-type pump dispenser described in (1) or (2) above, wherein the F-valve portion 13 includes a valve body, a base portion, and a spring piece that couples both.

The present invention resides in a push-type pump dispenser provided with the F valve structure according to any one of (4) and (1) to (3) above.

The present invention includes (5) an F valve portion 13 and a return spring portion 10 integrally connected to the F valve portion 13, and the return spring portion 10 includes a corrugated leaf spring portion 12 at an end portion thereof. A push-type pump dispenser in which an F-valve structure in which an anti-bending portion 11 is provided is incorporated, and a cylinder portion 4 that can be attached to a container via a cap 6 and can be moved up and down to the cylinder portion 4 The nozzle head 5 attached to the nozzle head 5, the piston portion 2 press-fit into the nozzle head 5, and the S valve 3 mounted on the upper end surface of the piston portion 2, and the F valve structure is formed in the piston portion. The push type pump dispenser is mounted, and the anti-bending portion 11 is in contact with the top surface portion 21 of the piston portion 2 and the F valve is in contact with the bottom surface 43 of the cylinder portion 4. .

According to the present invention, (6), the nozzle head 5 is formed with a nozzle protruding forward, an inner cylinder portion 52 formed so as to hang downwardly, and an interval outside the inner cylinder portion 52. The push type pump dispenser according to the above (5), which has an outer cylinder part 53 and is mounted so that the upper part of the cylinder part 4 is sandwiched between the inner cylinder part 52 and the outer cylinder part 53.

The present invention resides in (7) the push type pump dispenser according to the above (5), wherein the cylinder portion 4 and the cap portion are integrally formed.

It should be noted that a configuration in which the above (1) to (7) are appropriately combined can be adopted as long as it meets the object of the present invention.

The F valve structure of the present invention includes an F valve portion 13 and a return spring portion 10 integrally connected to the F valve portion 13, and the return spring portion 10 includes a corrugated spring portion 12. Since the anti-bending portion 11 is provided, when inserted into the piston portion 2 and incorporated, even if the nozzle head 5 is pushed down, the nozzle head 5 does not incline and thus does not move left and right and is in a stable state. .
Further, the valve function of the F valve portion 13 integrated with the corrugated spring portion 12 can always be exhibited properly.

Further, due to the inertia of the curving prevention portion 11, it does not shake finely, and positioning is easy and assembly is easy.
Since the curving prevention part 11 is an integral part of the donut part 11A, the notch base part 11C, and the notch hollow body part 11B between them, it can be easily assembled without slipping.

FIG. 1 is a view showing a combined valve structure used for the push type pump dispenser of the present invention, FIG. 1 (a) is a side view, and FIG. 1 (b) is a view of FIG. 1 (a). FIG. 1C is a partial sectional view, and FIG. 1C is a bottom view. FIG. 2 is a perspective view showing a bending prevention portion. FIG. 3 is a cross-sectional view showing a push-type pump dispenser in which an F valve structure is incorporated. FIG. 4 is a cross-sectional view showing the push-type pump dispenser in a state where the nozzle piston structure is pushed down to the lower limit position. FIG. 5 is a diagram showing each component constituting the push-type pump dispenser.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.
In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified.
Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

(First embodiment)
FIG. 1 is a view showing an F valve structure 1 used for a push type pump dispenser of the present invention, FIG. 1 (a) is a side view, and FIG. 1 (b) is a view of FIG. 1 (a). FIG. 1C is a partial cross-sectional view, and FIG. 1C is a bottom view.
FIG. 2 is a perspective view showing the curving prevention unit 11.

First, the F valve structure 1 will be described.
As shown in FIG. 1, in the F valve structure 1 of the present invention, both the F valve portion 13 and the return spring portion 10 are integrated into one component.
The F valve structure 1 is used by being incorporated in the piston part 2 and the cylinder part 4 for a push type pump dispenser.

The F valve portion 13 and the return spring portion 10 are integrated to form an F valve structure 1 that is one component as a whole, and the return spring portion 10 includes a corrugated spring portion 12 at a part thereof. This gives a restoring force to the nozzle head 5 described later.
The return spring portion 10 includes a bend prevention portion 11 having a special structure, and compensates for the behavioral defects of the corrugated spring portion 12.
As shown in FIG. 2, the bending preventing portion 11 is configured in a so-called bobbin shape by integrating a donut portion 11 A, a notched base portion 11 C, and a notched hollow body portion 11 B between them.
Therefore, the notched hollow body portion 11B has a smaller diameter than the donut portion 11A and the notched base portion 11C.
The donut portion 11A has a shape in which a hole is formed in the disk, the cutout base portion 11C has a shape in which a part of the disk is cut out, and the cutout hollow body portion 11B has a part of a cylinder. The shape is cut out.

The corrugated spring 12 is integrally coupled at the center of the notch base 11C.
In the state in which the F-valve structure 1 is incorporated in the push-type pump dispenser, the liquid flows through the notch base portion 11C and the notched hollow body portion 11B through the hole of the donut portion 11A and flows to the nozzle portion 51.

The bend preventing portion 11 has a corrugated spring portion 12 when the donut portion 11A and the notched base portion 11C are separated by a certain distance via the notched hollow body portion 11B and mounted in the piston portion 2 as will be described later. At the same time, since it is disposed along the inner wall of the piston portion 2, the nozzle head 5 does not incline even if it is subjected to a pressing action.
Therefore, the curving prevention unit 11 is in a stable state without swinging left and right.
When the curving prevention portion 11 is stabilized, the corrugated leaf spring portion 12 integrated therewith is always in a stable state without shaking.
Incidentally, if the end of the corrugated spring 12 is thin, such as a disc, the disc is tilted and swings left and right due to vertical movement, so that the corrugated spring 12 is rattled. Unevenness occurs in the movement.
On the other hand, even in the F valve portion 13 integrated with the corrugated leaf spring portion 12, the base portion 13C can also maintain a stable position, so that there is no liquid leakage from between the base portion 13C and the inner wall of the cylinder portion. Is displayed properly.

On the other hand, when the F-valve structure 1 is mounted in the piston portion 2 as will be described later, the bending prevention portion 11 is different from the disc and has a certain length, so that it is difficult to move due to its weight inertia.
Therefore, the bending prevention part 11 does not swing finely from side to side.
In this case, in the assembling operation, the bending prevention portion 11 is easily positioned, so that it can be easily inserted from the opening of the piston portion 2.

The F valve portion 13 of the F valve structure 1 is provided in a place where the corrugated leaf spring portion 12 is divided into two parts, and a disc-shaped valve body 13A and a ring shape formed on the valve body via a spring piece 13B. And a base portion 13C.
By receiving pressure, the valve body 13A opens or closes against the elastic force of the spring piece 13B.
The ring-shaped base portion 13 C is pressed downward by the return spring portion 10 (corrugated leaf spring portion 12) and is in contact with the bottom of the cylinder portion 4.
The valve body 13A moves slightly upward against the spring piece 13B, thereby opening the liquid passage.

As described above, the return spring portion 10 (particularly the corrugated leaf spring portion 12) gives a restoring force to the vertical movement of the piston portion 2, but is extremely stable.
The return spring portion 10 is set so as to maintain a resilient force even when the piston portion 2 is at the upper limit position (uppermost position).

When incorporated in the pump dispenser, the return spring portion 10 of the F valve structure 1 abuts on the top surface portion 21 of the piston portion 2 and the F valve portion 13 abuts on the bottom surface 43 of the cylinder portion 4. Installed.

(Example of push-type pump dispenser)
Next, an example of the push type pump dispenser provided with the F valve structure 1 of the present invention is shown.

3 is a cross-sectional view showing a push-type pump dispenser in which the F valve structure 1 is incorporated, and FIG. 4 is a cross-sectional view showing the push-type pump dispenser in a state where the nozzle head 5 is pushed down to the lower limit position (lowest position). FIG.
This push type pump dispenser is composed of six parts including a nozzle head 5, a cylinder part 4, an S valve 3, a piston part 2, and a cap 6 in addition to the F valve structure 1 described above.
The cylinder part 4 and the cap 6 can be integrally formed.

The nozzle head 5 includes a nozzle part 51 protruding forward, an inner cylinder part 52 formed so as to hang downward, and an outer cylinder part 53 formed with an interval outside the inner cylinder part 52. Have.
An inner annular protrusion 53 A is formed at the lower end of the outer cylinder portion 53.
The cylinder part 4 has a cylindrical shape and is mounted so as to be sandwiched between the inner cylinder part 52 and the outer cylinder part 53 of the nozzle head 5.
Therefore, the vertical movement of the nozzle head 5 is performed smoothly without tilting.

An upper annular projecting portion 41 is formed on the outer periphery above the cylinder portion 4 and defines the upper limit of the nozzle head 5.
That is, the inner annular projecting portion 53A formed on the inner peripheral wall of the outer cylindrical portion 52 of the nozzle head 5 is hooked on the upper annular projecting portion 41 of the cylinder portion 4, and the upper limit position of the nozzle head 5, that is, the piston portion 2 The upper limit position of is determined.
An outer collar portion 42 is formed at a position below the upper annular protrusion 41 on the outer periphery of the cylinder portion 4 by a certain distance.

The outer flange portion 42 is pressed against the mouth portion of the container (not shown) with the cap 6, and the screwed cylinder portion 4 is attached to the container.
In addition, this attachment may be snap-on coupling in addition to screwing.
Also, a suction pipe 4A having a smaller diameter for sucking up the liquid in the container is integrally formed on the bottom of the cylinder portion 4 so as to hang down.

On the other hand, the S valve 3 includes a disc-shaped valve body 31A and a ring-shaped base 31C formed on the valve body via a spring piece 31B.
The valve body 31A opens or closes against the elastic force of the spring piece 31B by receiving pressure, but this is the same as the F valve portion 13.

The piston portion 2 is press-fitted into the inner cylinder portion 52 of the nozzle head 5, and the S valve 3 is in contact with the top 21 of the piston portion 2 in this state.
The piston portion 2 includes a first lip portion T1 formed to spread outward at the lower end and a second lip portion T2 formed so as to protrude at a position spaced apart from the first lip portion by a certain distance. .
As will be described later, the piston portion 2 is mounted on the cylinder portion 4 and slides in the cylinder portion 4.
The first lip portion T1 and the second lip portion T2 seal between the cylinder portion 4 and the piston portion 2 so that outside air does not enter the cylinder portion 4.

By the way, a push type pump dispenser is obtained by assembling the above-mentioned six parts.
FIG. 5 is a diagram showing each component constituting the push-type pump dispenser.
In the entire assembly, the S valve 3 is first pushed into the nozzle head 5 with the S valve 3 placed on the top 21 of the piston portion 2.
Then, the piston part 2 is press-fitted into the inner cylinder part 52 of the nozzle head 5 and fixed.
As a result, the piston portion 2, the S valve 3, and the nozzle head 5 are integrated together.
In this case, the S valve 3 is interposed between the top 21 of the piston portion 2 and the nozzle head 5 (specifically, the lower end of the inner peripheral rib 54).

Next, the cap 6 is attached to the cylinder portion 4.
Then, the F valve structure is inserted into the cylinder portion 4 from above.
In this case, the curving prevention part 11 of the F valve structure can be picked and easily incorporated.
Since the donut portion 11A and the cutout base portion 11C are separated from each other by a fixed distance via the cutout hollow body portion 11B, the bending prevention portion 11 is easy to put in because the finger does not stop and slip.

In the F valve structure 1, the F valve portion 13 comes into contact with the bottom surface 43 of the cylinder portion 4, and the curving prevention portion 11 protrudes from the upper end of the cylinder portion 4.
Here, the nozzle head 5 incorporating the S valve 3 and the piston portion 2 is mounted on the upper portion of the cylinder portion 4 from above.

The bending prevention part 11 does not swing and moves in a stable position, so that the bending prevention part 11 can be easily positioned in the opening at the lower end of the piston part 2.
At this time, the bending prevention part 11 of the F valve structure 1 is in contact with the top 21 of the piston part 2 and the upper part of the cylinder is mounted so as to be sandwiched between the inner cylinder part 52 and the outer cylinder part 53 of the nozzle head 5. Is done.

In this state, the nozzle head 5 is in an elastic state upward, and the inner annular protrusion 53A at the lower end of the outer cylinder 53 and the upper annular protrusion 41 on the outer periphery of the cylinder part 4 abut (collision). As a result, the nozzle head 5 cannot move upward any further.
This is the so-called upper limit position.
This completes the assembly of all parts.

When the nozzle head 5 is pushed down in this state, the lower end of the outer cylinder portion 52 of the nozzle head 5 comes into contact with the cap 6 so that the nozzle head 5 cannot move downward.
This is the so-called lower limit position.
Thus, a push type pump dispenser is easily completed by assembling six parts.

The push-type pump dispenser has a unique structure as described above. However, the cylinder part 4, S valve 3, cap 6, nozzle head 5, piston part 2, F valve structure 1 ( The F valve portion 13, the return spring portion 10, and the bending prevention portion 11) are formed by injection molding using a synthetic resin such as PE, PP, and POM.

(Use example of push type pump dispenser)
In order to use the push-type pump dispenser attached to the container, for example, when the nozzle head 5 is pushed down from the upper limit position (see FIG. 3) by hand, the liquid filled in the cylinder portion 4 receives pressure.
Therefore, the S valve 3 is opened (the F valve unit 13 is closed at this time), and the liquid is discharged from the nozzle unit 51.

In this case, the liquid around the corrugated spring 12 passes through the notch base 11C and the notch hollow body 11B, passes through the hole of the donut 11A, and flows to the nozzle 51.
Then, the nozzle head 5 is further pushed down to the lower limit position (see FIG. 4), thereby terminating the liquid discharge.

In this case, even when the nozzle head 5 is pushed down, the upper end of the return spring portion 10 of the F-valve structure 1 is stable without wobbling due to the bending prevention portion 11 and is not bent.

Next, when the hand is released from the nozzle head 5, the nozzle head 5 naturally rises due to the return force of the return spring portion 10.
Here, since the inside of the cylinder part 4 becomes negative pressure, the S valve 3 is closed and the F valve part 13 is opened, and the liquid in the container rises into the cylinder part 4 through the suction pipe 41A.
Thereafter, this operation is repeated.
By the way, although preferred embodiment of this invention has been described, this invention is not limited to the said embodiment.

In the embodiment, as a means for temporarily fixing the nozzle head 5 to the upper limit position, a screw portion may be provided at the upper end of the cylinder portion 4.
Further, as means for temporarily fixing the nozzle head 5 to the upper limit position or the lower limit position, fitting, engagement or the like is employed in addition to screwing.

In the push-type pump dispenser, various types such as screwing, bayonet coupling, and snap coupling are employed to attach the cap 6 to the mouth of the container.
Further, although the present invention has been described with a push-type pump dispenser as shown in the drawings, the present invention is not necessarily limited to such a pump dispenser.

The push-type pump dispenser of the present invention is an F valve structure in which the F valve portion 13 and the return spring portion 10 are integrated. However, since the upper portion of the return spring portion 10 includes a curving prevention portion 11, the nozzle head 5 has the advantage that the return spring portion 10 does not swing from the shaft center and does not rattle.
In addition to the pressure-accumulating push-type pump dispenser, it can be used for a trigger-type pump dispenser.

DESCRIPTION OF SYMBOLS 1 ... F valve structure 10 ... Return spring part 11 ... Bending prevention part 11A ... Donut part 11B ... Notch hollow trunk | drum 11C ... Notch base 12 ... Corrugated sheet Spring part 13 ... F valve part 13A ... Valve element 13B ... Spring piece 13C ... Base part 2 ... Piston part 21 ... Top part T1 ... First lip part T2 ... 2nd lip 3 ... S valve 31A ... Valve 31B ... Spring piece 31C ... Base 4 ... Cylinder 4A ... Suction tube 41 ... Upper annular protrusion 42 ... · Outer flange portion 43 ··· Bottom surface 5 · · · Nozzle head 51 · · · Nozzle portion 52 · · · Inner tube portion 53 · · · Outer tube portion 53A · · · Inner annular protrusion 54 · · · Inner peripheral rib 6 ... Cap

Claims

A push-type pump comprising an F valve portion and a return spring portion integrally connected to the F valve portion, the return spring portion including a corrugated leaf spring portion, and a curving prevention portion provided at an end thereof. F valve structure for dispenser.
2. The F-valve structure for a push-type pump dispenser according to claim 1, wherein the bending preventing part is an integral part of a donut part, a notch base part, and a notch hollow body part between them. .
The F valve structure for a push-type pump dispenser according to claim 1 or 2, wherein the F valve portion is composed of a valve body, a base portion, and a spring piece for connecting both.
A push-type pump dispenser comprising the F valve structure according to any one of claims 1 to 3.
An F-valve structure comprising an F-valve part and a return spring part integrally connected to the F-valve part, wherein the return spring part is provided with a corrugated leaf spring part, and an end portion is provided with a curving prevention part A push-type pump dispenser incorporating a body, a cylinder part that can be attached to a container via a cap, a nozzle head that is attached to the cylinder part so as to be movable up and down, and a piston part that can be press-fitted into the nozzle head And an S valve placed on the upper end surface of the piston part, and an F valve structure is mounted in the piston part, and its curving prevention part is in contact with the top surface part of the piston part. Push type pump dispenser characterized by being in contact with the bottom of the part.
The nozzle head part has a nozzle protruding forward, an inner cylinder part formed so as to hang downward, and an outer cylinder part formed with an interval outside the inner cylinder part. 6. The push-type pump dispenser according to claim 5, wherein the upper part is sandwiched between the inner cylinder part and the outer cylinder part.
6. The push-type pump dispenser according to claim 5, wherein the cylinder part and the cap are integrally formed.