JP2009090201A - Pump dispenser - Google Patents

Abstract

An object of the present invention is to provide a pump dispenser in which the position of a nozzle does not move up and down when liquid is discharged, it can be easily handled by a person with a small hand, and the gripping hand is difficult to get dirty.
SOLUTION: A cylinder part 3, a piston part 1 slidable in the cylinder part 3, a valve case part 9 mounted in the cylinder part 3, and a liquid from the bubble case part 9 are discharged to the outside. Nozzle section 2, housing section 4 mounted outside cylinder section 3, trigger section 5 hinged to housing section 4 to move piston section 1 up and down, and housing on the same side as trigger section 5 A handle portion 6 formed on the portion 4 and a cap 7 for attaching the cylinder portion 3 to the container 8. The handle portion 6 and the trigger portion 5 are gripped to attach the trigger portion 5 to the handle portion 6. A pump dispenser A that applies pressure in the cylinder part 3 to discharge the liquid to the outside through the nozzle part 2 by being pulled down to the side.
[Selection] Figure 3 (a)

Description

  The present invention relates to a pump dispenser for discharging a liquid contained in a container.

Today, a pump dispenser is known as a device that vigorously discharges the liquid contained in a container.
The pump dispenser includes a piston and a cylinder. When the piston is manually driven, the liquid is pressurized and discharged.
And a pump dispenser is divided roughly into several types by how to drive a piston, and one is a trigger type pump dispenser (refer to patent documents 1).

A trigger is provided on the front surface of the trigger type pump dispenser, and when it is grasped by hand and moved to the front, the piston moves in conjunction with this and the hydraulic pressure in the cylinder increases.
As a result, the liquid is ejected vigorously from the nozzle.
JP 2007-69116 A

By the way, since the nozzle of the trigger type pump dispenser and the piston are combined and integrated, when the trigger is gripped, the nozzle also moves downward together with the movement of the piston.
Therefore, the trigger type pump dispenser has a problem that the liquid cannot be accurately discharged to a target location.

Further, when pulling the trigger of the trigger type pump dispenser, it is necessary to grasp the entire periphery of the trigger type pump dispenser.
Therefore, when a child with a small hand or the like handles, the state of gripping the trigger becomes shallow, and it becomes difficult to put power.
Since four fingers (or three depending on the person) are used and the gripping force of the entire hand is used, if a liquid agent or the like adheres to the periphery of the pump dispenser body, it adheres to the hand and becomes dirty.

The present invention has been made in view of the above circumstances.
That is, an object of the present invention is to provide a pump dispenser in which the position of the nozzle does not move up and down when the liquid is discharged, it can be easily handled by a person with a small hand, and the gripping hand is difficult to get dirty.

  The inventors of the present invention have intensively studied to solve the above problems, and found that the above problems can be solved by providing the nozzle portion in the cylinder portion whose position is fixed and providing the handle in the housing portion. The invention has been completed.

  That is, the present invention includes a cylinder part, a piston part slidable in the cylinder part, a valve case part mounted in the cylinder part, a nozzle part for discharging liquid from the bubble case to the outside, A housing part mounted outside the cylinder part, a trigger part hinged to the housing part to move the piston part up and down, a handle part formed on the housing part on the same side as the trigger part, and the cylinder part as a container A pump for attaching to the main body, holding the handle portion and the trigger portion, and pulling down the trigger portion to the handle portion side, thereby applying pressure to the cylinder portion and discharging the liquid to the outside through the nozzle portion Be in the dispenser.

  Further, the present invention resides in a pump dispenser in which a trigger portion is hinged to be integrated with the housing portion.

  Further, the present invention resides in a pump dispenser in which a valve case portion is composed of an inner tube portion and an outer tube portion, and a nozzle portion projects directly outward from the inner tube portion.

  The present invention also resides in a pump dispenser in which a spring for biasing the trigger portion upward is provided between the housing portion and the trigger portion.

  Moreover, this invention exists in the pump dispenser which will be in the state accommodated in the groove part formed in the top part of a housing part, when a trigger part is pulled down below.

  Moreover, this invention exists in the pump dispenser provided so that a handle part may be located just under a trigger part.

  Moreover, this invention exists in the pump dispenser by which pulling is stopped when a trigger part contact | abuts a handle part.

  Further, according to the present invention, an upper air hole and a lower air hole are formed in the wall surface of the cylinder part, so that the outside air passes between the housing part and the cylinder part and between the cylinder part and the valve case. It exists in the pump dispenser which goes into the inside and the negative pressure in a container is eliminated.

  In addition, as long as the objective of this invention is met, the structure which combined the said invention suitably is also employable.

Since the nozzle part of the pump dispenser of the present invention discharges liquid from the bubble case to the outside, the position of the nozzle part does not change even if the piston is moved up and down.
As a result, the pump dispenser of the present invention can discharge the liquid stored in the container toward the target location with high accuracy.

Since the handle is formed in the housing part on the same side as the trigger part, when pulling in the trigger, the thumb is placed on the trigger part with four fingers (or three depending on the person) hooked on the handle part. It only needs to be pushed down together and does not need to hold the entire trigger pump dispenser.
Therefore, children with small hands can be handled easily.
Even when the liquid agent is attached to the pump dispenser itself, it is not soiled because the hand is away from the pump dispenser body.

By providing the handle portion so as to be positioned directly below the trigger portion, it becomes easy to attach the thumb to the trigger portion as much as possible.
When the trigger part is pulled downward, it is stored in the groove formed at the top of the housing part, so that the trigger part can move up and down along the side wall of the groove part and does not shake laterally, Stable movement is possible.

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.

FIG. 1 is an external view of a pump dispenser attached to the container of the present embodiment.
As shown in FIG. 1, the pump dispenser A of the present embodiment is used in a state where the handle portion 6 is gripped and the thumb is attached to the trigger portion 5.
When the trigger part 5 is simply pushed down with the thumb, the liquid stored in the cylinder receives pressure and is discharged from the nozzle part 2.

Thus, in the pump dispenser A of the present embodiment, it is not necessary to grasp the entire periphery of the pump dispenser, and even a person with a relatively small hand can easily pull the trigger portion with a thumb.
The operation is very simple.
This pump dispenser A has high versatility, and can be used, for example, for storage containers for cosmetics, shampoos, body soaps, tableware detergents, and the like.
2 is an enlarged view of a main part of the pump dispenser of the present embodiment, FIG. 2 (a) is a front view, FIG. 2 (b) is a left side view, and FIG. 2 (c) is a right side view. FIG. 2D is a plan view.

Fig.3 (a) is sectional drawing of the pump dispenser of this embodiment, Fig.3 (a) shows the state before a trigger part is pushed down, FIG.3 (b) shows after a trigger part is pushed down. Indicates the state.
As shown in FIGS. 3A and 3B, the pump dispenser A includes a piston portion 1, a nozzle portion 2, a cylinder portion 3, a housing portion 4, a trigger portion 5, and a handle portion 6. And a cap 7.

The cap 7 is for attaching the pump dispenser A to the container, and is fixed to the container by screwing.
A latching portion is formed at the upper end portion of the cap 7, and the latching portion is engaged with the latching portion formed at the lower end portion of the housing portion 4, thereby connecting both members.
That is, by pushing the housing part 4 into the cap 7, both the latching parts are hooked and attached.

The housing part 4 has a hollow cylindrical shape and is mounted on the outside of a cylinder part 3 to be described later.
The housing part 4 is formed with a handle part 6 for easily holding the pump dispenser A.
The handle portion 6 has a U shape, and is formed at the same side as the trigger portion 5, that is, at a position directly below the trigger portion 5 on the rear side of the housing portion 4.
Therefore, it is possible to place the thumb on the trigger portion 5 when the handle portion 6 is gripped, and the trigger portion 5 can be easily operated.

Moreover, when the trigger part 5 is pulled down, it stops by contacting the handle part 6.
The trigger portion 5 is stopped from rotating upward by coming into contact with a stop portion (not shown) formed in the housing portion 4.

In the cylinder part 3, the piston part 1 is slidable.
The valve case part 9 includes an outer cylinder part 91 and an inner cylinder part 92, and the outer cylinder part 91 is attached inscribed to the cylinder part 3.
A part of the inner cylinder part 92 is attached to the cylinder part 3 and the other part of the inner cylinder part 92 is attached to the cap 7 or the container 8.
The inner cylindrical portion 92 hangs down to near the bottom of the container 8.

A valve seat cylinder 31 having a smaller diameter is formed inside the inner cylinder portion 92, and a first check valve 32 (so-called F valve) is provided in the valve seat cylinder 31. The enormous portion of the stop valve 32 contacts or separates from the tip of the valve seat cylinder 31 (corresponding to a so-called valve seat), and the passage is opened and closed.
The first check valve 32 sucks up the liquid from the inside of the container 8 into the decompressed cylinder part 3 and prevents the liquid from flowing back from the inside of the pressurized cylinder part 3 into the container 8.

The valve case portion 9 is provided with a nozzle portion 2 for discharging the liquid to the outside.
Specifically, a mounting boss 92A is formed on the side surface of the inner cylinder portion 92, and the nozzle portion 2 is provided on the mounting boss 92A so as to protrude outward.
The sucked liquid is discharged outside through this nozzle part 2.
A second check valve 21 (so-called S valve) for preventing a backflow of air is provided inside the nozzle portion 2.

The piston part 1 is slidable in the cylinder part 3, and the piston part 1 is connected to the trigger part 5 via a rod part 11 which is a part of the piston part 1.
This connection is made by inserting a shaft 11 </ b> A formed at the upper end of the rod part 11 into the receiving part 51 of the trigger part 5.
Therefore, when the trigger part 5 is pushed down, the piston part 1 also moves downward integrally.
That is, the piston unit 1 also moves up and down in conjunction with the vertical movement of the trigger unit 5.

The tip of the trigger part 5 is hinged to the housing part 4 and is integrally formed, and the trigger part 5 can be rotated in the vertical direction from that point.
As described above, when the trigger portion 5 is pushed down, the piston portion 1 moves downward accordingly, and the hydraulic pressure in the cylinder portion 3 increases.

When the hydraulic pressure in the cylinder part 3 increases, the second check valve 21 opens and the cylinder part 3 and the nozzle part 2 communicate with each other.
Therefore, the liquid flows out from the cylinder part 3 to the nozzle part 2 and is discharged from the tip of the nozzle part 2.
When the liquid is discharged and the hydraulic pressure in the cylinder part 3 decreases, the second check valve is closed, and as a result, air is prevented from entering the cylinder part 3 from the nozzle part 2.

Moreover, when the piston part 1 rises and returns to the original position, the pressure in the cylinder part 3 decreases, and the liquid in the container 8 is sucked up and enters the cylinder part 3.
In addition, since the liquid in the container 8 decreases, the inside of the container 8 becomes a negative pressure and a container dent or the like is generated. The pump dispenser A is provided with a negative pressure eliminating means for eliminating this.
That is, the upper through hole 33 and the lower through hole 34 are formed on the cylinder wall surface, and when the inside of the container 8 is negatively pressured, the outside air is transferred between the upper through hole 33 → the housing part 4 and the cylinder part 3 → the lower through hole 34. → Between the cylinder portion 3 and the valve case 9 → Inside the cap 7 → Inside the container 8, the negative pressure in the container 8 is eliminated.
By such a negative pressure eliminating means, not only the negative pressure is eliminated, but the liquid in the container 8 does not leak even if the container 8 tilts or falls.

Unlike the conventional pump dispenser, the nozzle portion 2 of the present embodiment is provided on the inner cylindrical portion 92 of the valve case portion 9 which is a member that is not affected at all by the movement of the trigger portion 5. Even if it moves up and down, the position of the nozzle part 2 does not change.
Therefore, the direction of the nozzle part 2 can be determined.

The trigger part 5 is returned upward by a spring S provided between the housing part 4 and the trigger part 5.
The spring S includes a ring-shaped base portion (not shown) that is press-fitted and fixed to the housing portion 4 and a plate-shaped portion that is curved and rises therefrom. Note that the tip of the plate-like portion is supported by a protrusion 52 formed on the back side of the trigger portion 5.
This plate-like portion is bifurcated and is provided so as to allow the rod portion 11 of the piston portion 1 to escape, so that it does not hinder the vertical movement of the rod portion 11.
By this spring S, an upward biasing force is always applied to the trigger portion 5, and even if the thumb is placed on the trigger portion 5 and pushed down, the trigger portion 5 naturally returns to its original position when the thumb is removed.
In addition, when the trigger part 5 is pushed down, it will be in the state accommodated in the groove part 41 formed in the top part of the housing part 4 (refer FIG.2 (d)).
Therefore, since the trigger part 5 moves up and down along the side wall of the groove part 41, it does not shake in the horizontal direction and can move stably.

As described above, in the present invention, when pulling the trigger to discharge the liquid, it is not necessary to grasp the entire trigger type pump dispenser.
As shown in FIG. 1, with four fingers (or three depending on the person) hooked on the handle portion, the thumb is attached to the trigger portion from above, and this is simply pushed down.
Therefore, children with small hands can be handled easily.
Further, even when the liquid agent is attached to the pump dispenser itself, it is not soiled because the hand is away from the pump dispenser body.

Although the present invention has been described above by taking the embodiment as an example, the present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, by attaching a known orifice or spinner to the tip of the nozzle portion, the liquid can be discharged in the form of bubbles or mist.
Further, the trigger part 5 is not necessarily integral with the housing part 4.

FIG. 1 is an external view of the pump dispenser of this embodiment. FIG. 2 is an enlarged view of a main part of the pump dispenser of the present embodiment, and FIG. 2 (a) is a front view. FIG. 2 is an enlarged view of a main part of the pump dispenser of the present embodiment, and FIG. 2B is a left side view. FIG. 2 is an enlarged view of a main part of the pump dispenser of the present embodiment, and FIG. 2C is a right side view. FIG. 2 is an enlarged view of a main part of the pump dispenser of the present embodiment, and FIG. 2 (d) is a plan view. FIG. 3 is a cross-sectional view of the pump dispenser of the present embodiment, and FIG. 3 (a) shows a state before the trigger portion is pushed down. FIG. 3 is a cross-sectional view of the pump dispenser of the present embodiment, and FIG. 3B shows a state after the trigger portion is pushed down.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Piston part 11 ... Rod part 11A ... Shaft 2 ... Nozzle part 21 ... Second check valve 3 ... Cylinder part 31 ... Valve seat cylinder 32 ... First One check valve 33 ... upper through hole 34 ... lower through hole 4 ... housing part 41 ... groove part 5 ... trigger part 51 ... receiving part 52 ... projection 6 ... handle Part 7: Cap 8 ... Container 9 ... Valve case part 91 ... Outer cylinder part 92 ... Inner cylinder part A ... Pump dispenser S ... Spring

Claims (8)

A cylinder part;
A piston part slidable in the cylinder part;
A valve case portion mounted in the cylinder portion;
A nozzle part for discharging liquid from the bubble case to the outside;
A housing part mounted outside the cylinder part;
A trigger part that is hinged to the housing part and moves the piston part up and down;
A handle portion formed in the housing portion on the same side as the trigger portion;
A cap for attaching the cylinder part to the container body,
A pump dispenser characterized by gripping the handle portion and the trigger portion and pulling down the trigger portion toward the handle portion so as to apply pressure in the cylinder portion and discharge the liquid to the outside through the nozzle portion.   2. The pump dispenser according to claim 1, wherein the trigger portion is hinged integrally with the housing portion.   2. The pump dispenser according to claim 1, wherein the valve case part is composed of an inner cylinder part and an outer cylinder part, and the nozzle part projects directly from the inner cylinder part to the outside.   The pump dispenser according to claim 1, wherein a spring for biasing the trigger portion upward is provided between the housing portion and the trigger portion.   2. The pump dispenser according to claim 1, wherein when the trigger portion is pulled downward, the trigger portion is housed in a groove formed at the top of the housing portion.   The pump dispenser according to claim 1, wherein the handle is provided so as to be positioned directly below the trigger.   The pump dispenser according to claim 6, wherein the trigger portion is stopped by being brought into contact with the handle portion.   By forming an upper hole and a lower hole in the wall surface of the cylinder part, the outside air passes between the housing part and the cylinder part and between the cylinder part and the valve case and enters the container. The pump dispenser according to claim 1, wherein the negative pressure in the inside is eliminated.

Images