WO2010029732A1

WO2010029732A1 - Trigger spray

Info

Publication number: WO2010029732A1
Application number: PCT/JP2009/004462
Authority: WO
Inventors: 多田哲也; 多田篤
Original assignee: キャニヨン株式会社
Priority date: 2008-09-09
Filing date: 2009-09-09
Publication date: 2010-03-18
Also published as: JP2010063980A

Abstract

A trigger spray, wherein a connecting pipe is adapted to be smoothly bent and wherein, in use, the trigger spray can be easily aimed at a target and an excessive force is not applied to the connecting pipe. A trigger spray comprises: a balance arm (7) pivotably mounted to a piston (1) and having one end section (74) pivotably supported on a base body (9); a spring (6) for applying a return force to the balance arm (7); a slider (3) for pivoting the balance arm (7) when pressed horizontally; a housing (10) mounted to the base body (9); a nozzle section (4) fixed to the housing (10); and a flexible connecting pipe (5) for interconnecting the nozzle section (4) and the piston (1). Liquid in the piston (1) is discharged from the nozzle section (4) via the connecting pipe (5) by pulling in and horizontally moving the slider (3).

Description

Trigger spray

The present invention relates to a trigger spray that ejects from a nozzle a liquid in a cylinder that pushes down a piston and leads to a container by rotating the trigger.

Conventionally, a spray container is used to spray a liquid such as a medicine.
For example, a trigger spray is used for a pump dispenser that is a spraying mechanism attached to a spray container (see Patent Document 1).
In this trigger spray, a trigger member 207 that is refracted into a “<” shape on a base so as to freely rotate is joined to a piston 201, and a free end of the trigger member 207 is brought into contact with a horizontally movable slider 203. (See FIG. 11).

With such a structure, the operation of pulling the slider 203 becomes linear, and the operation of the person who uses the trigger spray becomes simple.
Further, since the slider 203 has a shape that does not protrude from the width of the container, it is not bulky and is convenient for carrying.

JP 2008-114103 A

However, since the nozzle part 204 joined to the piston 201 is not fixed to the housing 210 in the trigger spray described in the above-mentioned patent document, when the slider 201 is pulled down and the piston 201 is lowered, the nozzle part 204 accompanies the movement. There was also a problem of descending.
Therefore, when using the trigger spray, it is difficult to aim at the target, and it is difficult to accurately inject the liquid to a predetermined location.

In order to solve this problem, a countermeasure can be considered in which the nozzle portion is fixed to the housing and the nozzle portion and the piston are connected by a connecting pipe having flexibility.
However, even if such a structure is incorporated in the trigger spray described in the above-mentioned patent document, the joint between the piston and the trigger member is inside the position of the rotation axis of the trigger member, that is, the contact between the slider and the trigger member. Because of the position on the part side, the connecting pipe cannot always sufficiently follow the vertical movement of the piston.
In other words, in such a structure, since the length of the connecting pipe is not sufficient, an unreasonable force is generated by the vertical movement of the piston, and the smooth movement of the slider is also adversely affected.

The present invention has been developed to solve the above problems. That is, an object of the present invention is to provide a trigger spray in which a connecting pipe is smoothly bent and used so that it is easy to aim and a force is not applied to the connecting pipe.

As a result of intensive research based on the background of the problems as described above, the inventor has pivotally attached to the piston and devised the position of the pivot shaft of the balance arm for moving the piston up and down. It has been found that the problem can be solved, and the present invention has been completed based on the knowledge.

That is, the present invention is (1) a base body attached to a container mouth, a cylinder integrated with the base body, a piston sliding in the cylinder, and a base body rotatably supported. A balance arm with one end (first end) pivotally attached to the piston, a spring for applying a restoring force to the balance arm, and the other end (second end) of the balance arm, A slider for rotating the balance arm by pushing in a horizontal direction; a housing attached to the base body; a nozzle portion fixed to the housing; and a connecting pipe for connecting the nozzle part and the piston. Has a flexibility and exists in a trigger spray that ejects the liquid in the piston from the nozzle portion through the connecting pipe by pulling and moving the slider.

Further, the present invention resides in (2) the trigger spray according to the above (1), wherein the slider is movable along the base body.

Further, the present invention resides in (3) the trigger spray according to the above (1), wherein the base body is provided with a hook-like standing latching portion, and a balance arm is supported on the latching portion.

Further, the present invention resides in (4) the trigger spray according to the above (1), wherein the balance arm has the second end moved upward and the first end moved downward by the movement of the slider.

According to the present invention, (5) the spring includes a base portion and a curved spring portion that protrudes from the base portion in a U-shape and is connected at the tip, and the base portion is locked to a locking portion formed on the base body. In the trigger spray according to the above (1), the connecting portion at the tip is hooked on a hooking claw formed at the first end portion of the balance arm.

Further, the present invention resides in (6) the trigger spray according to the above (1), wherein the housing is formed with a notch for exposing the nozzle portion and the slider.

Further, the present invention resides in (7) the trigger spray according to the above (1), wherein a stopper for closing the nozzle portion is hooked on the housing.

In addition, as long as it meets the object of the present invention, a configuration in which the above (1) to (7) are appropriately combined can be adopted.

In the trigger spray of the present invention, since the nozzle portion fixed to the housing and the piston are connected by a connecting pipe having flexibility, the nozzle portion does not move up and down even if the piston moves up and down. As a result, the user of the present invention can accurately eject the liquid to the target location.

Further, in order to move the piston up and down, the pivot shaft of the balance arm pivotally attached to the piston includes a pivot attachment portion between the piston and the balance arm, and a contact portion between the second end portion of the balance arm and the slider. , The connecting pipe can be lengthened and can sufficiently follow the vertical movement of the piston.
Therefore, the slider can also move smoothly.

FIG. 1 is a cross-sectional view showing a trigger spray according to the present embodiment. FIG. 2 is a cross-sectional view showing the trigger spray of the present embodiment. FIG. 3 is an external view showing the trigger spray of the present embodiment. FIG. 4 is a development view of the trigger spray of the present embodiment. FIG. 5 is a perspective view of a balance arm, (A) is a perspective view seen from below, and (B) is a perspective view seen from above. FIG. 6 is a perspective view of the balance arm as seen from above. FIG. 7 is a perspective view showing a spring. FIG. 8 is a perspective view showing the slider. 9A and 9B are diagrams showing a slider having a stepped portion, where FIG. 9A is a cross-sectional view of a trigger spray, and FIG. 9B is a perspective view showing the slider. FIG. 10 is an external view of a trigger spray having a circular cross section. FIG. 11 is a cross-sectional view showing a conventional trigger spray.

(First embodiment)
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.

1 and 2 are cross-sectional views showing the trigger spray according to the present embodiment. FIG. 1 shows a state before the slider is pulled, and FIG. 2 shows a state after the slider is pulled.
FIG. 3 is an external view of the trigger spray according to the present embodiment.
FIG. 4 is a development view of the trigger spray of the present embodiment.
The trigger spray A of the present embodiment is attached to the mouth of a container containing various liquids such as detergents and chemicals. When used, the trigger spray A is drawn by bringing a finger into the slider 3 provided in the container and pulling the liquid forward. It is ejected from the nozzle part 4.

The trigger spray A of this embodiment has a structure in which the position (height) of the nozzle portion 4 does not change even when the slider 3 is pulled. For this reason, the user can accurately eject the liquid to the target location.
This is realized by connecting the nozzle portion 4 fixed to the housing 10 and the piston 1 via a connecting pipe 5 having flexibility.

Further, in order to make the connecting pipe 5 longer and reliably follow the movement of the piston 1 in the vertical direction, the pivot shaft of the balance arm 7 for moving the piston 1 up and down includes the piston 1 and the balance arm 7. Are disposed between the pivot attachment portion and the contact portion between the second end 73 of the balance arm 7 and the slider 3.
Further, by arranging the rotation shaft at such a position, the connecting pipe 5 can be lengthened, and the piston 1 can be sufficiently followed up and down.

And, since the connecting pipe 5 becomes longer, the degree of freedom of movement of the connecting pipe itself increases, and the connecting pipe 5 can be bent without difficulty by the movement of the piston 1, and no extra force is applied to the connecting pipe 5.

Next, the trigger spray A will be specifically described.
As shown in FIGS. 1 and 2, the trigger spray A is attached to the container B, and includes a piston 1, a cylinder 2, a slider 3, a nozzle portion 4, a connecting pipe 5, a spring 6, A balance arm 7, a suction tube portion 8, a base body 9, and a housing 10 are provided. The cylinder 2 and the base body 9 are integrally formed.

The nozzle portion 4 is fixed to the housing 10 from the inside, and is exposed to the outside through a notch portion K formed in the housing 10.
Further, the nozzle portion 4 and the piston 1 are coupled via a connecting pipe 5 having a flexibility in which a large number of creases (not shown) are formed around the nozzle portion 4 and the piston 1.
Here, the nozzle part 4, the connecting pipe 5 and the piston 1 can be integrally formed. In this case, the connecting pipe 5 can be thinned to increase the flexibility, or multicolored. Only a portion of the connecting pipe 5 may be bent by molding using another material.

As described above, since the nozzle portion 4 is fixed to the housing 10 and the nozzle portion 4 is coupled to the piston 1 via the connecting pipe 5 having flexibility, the piston 1 moves downward as the slider 3 moves. Even so, since only the connecting pipe 5 is bent, the nozzle portion does not move downward with the movement of the piston as in the prior art, and the position (height) of the nozzle portion 4 does not change.
A large number of disc-shaped ribs (not shown) are formed on the outer periphery of the connecting pipe 5, and the cross-section does not deform even when bent, so that the liquid does not deteriorate.

When the trigger spray A is used, the slider 3 is a portion where the nozzle portion 4 is directed toward the front and is held by the thumb and applied with a finger, and the applied pulling force is applied to the piston by the balance arm 7 contacting the slider 3. It is converted into a force that pushes 1 down.
In principle, the nozzle portion 4 is used with the nozzle portion 4 facing forward. However, it is naturally possible to use the nozzle portion 4 with the index finger or middle finger applied to the slider 3 with the nozzle portion 4 facing the opposite side.

FIG. 5A is a perspective view of the balance arm as viewed from below, and FIG. 5B is a perspective view of the balance arm as viewed from above.
FIG. 6 is a perspective view of the balance arm as viewed from above.
As shown in FIGS. 5 (A), 5 (B) and 6, a pair of engaging protrusions 12 extending outward from each other are formed on the side surface of the piston 1, and these engaging protrusions 12 are used as a balance. The piston 1 and the balance arm 7 are pivotally attached by being fitted into the engaging portion 71 of the arm 7.

Further, the balance arm 7 is formed with a connecting shaft 72 for connecting the arm left portion 7A and the arm right portion 7B. The connecting shaft 72 stands in a hook shape provided integrally with the base body 9. It is rotatably supported by the latching portion 91 (see FIGS. 1 and 2).

An extension portion 7C extending obliquely upward is formed from the arm left portion 7A and the arm right portion 7B. A second end portion 73 that is an end portion of the extending portion 7 </ b> C is in contact with the slider 3 that is movably attached to the base body 9 in the horizontal direction.
Since the second end portion 73 is formed in a curved surface shape, the friction when the slider 3 is pulled is reduced as much as possible.

When the slider 3 is pulled inward of the trigger spray A, the slider 3 pushes the second end 73 in the horizontal direction, and the balance arm 7 rotates upward (clockwise) about the connecting shaft 72.
Then, when the balance arm 7 rotates upward, the pivoting portion between the piston 1 and the balance arm 7 is positioned on the opposite side of the slider 3 with the connecting shaft 72 interposed therebetween, so that the piston 1 is pushed downward.

The spring 6 gives a restoring force to return the balance arm 7 pushed down by the movement of the slider 3 to the original position. As shown in FIG. 7, the spring 6 protrudes in a U-shape from the base 62B and the base 62B. A pair of

curved spring portions

61A and 61B and a connecting portion 62A that connects the tip ends of the two curved spring portions are configured.
Then, the spring 62 is fixed to the base body 9 by fitting the base portion 62B into the locking portion 92 provided on the base body 9 (see FIG. 6).

On the other hand, the connecting portion 62A is hooked on latching claws 74A and 74B formed on the first end 74 of the balance arm 7, and the return force that the spring 6 applies to the balance arm 7 is the coupling portion 62A and the latching claw. It is transmitted to the balance arm 7 through contact portions with 74A and 74B.
In this embodiment, since the shape of the connecting portion 62A is a round bar, the contact resistance with the latching claw 74A is minimized, and the restoring force provided by the spring 6 is efficiently transmitted to the balance arm 7.

FIG. 8 is a perspective view showing the slider.
As shown in the figure, the slider 3 includes a side wall portion 31 and a bottom wall portion 32 and has a U-shaped cross section. A T-shaped member 33 is provided below the cross section.
The T-shaped member 33 is fitted into a T-shaped groove 94 formed in the base body 9.
For this reason, the slider 3 can be moved in parallel on the base body 9 in a stable state without being left and right.

The suction tube portion 8 is a flow path for allowing the liquid contained in the container to which the trigger spray A is attached to flow into the cylinder 2, and is preferably formed integrally with the cylinder 2.
In addition, the sucking tube portion 8 of this embodiment uses a sucking tube portion that can be sucked even when the container is inverted.
A first valve V1 is provided between the suction tube portion 8 and the cylinder 2 to suck up the liquid and prevent the inflowing liquid from flowing back into the container.
In the normal state, the first valve V1 is pressed against the valve seat by the water pressure of the liquid stored in the cylinder 2, but when the liquid in the cylinder 2 is jetted and then becomes negative pressure due to the return of the piston 1, the valve seat Leave and open the passage.

On the other hand, the housing 10 functions as a cover for protecting the piston 1, the spring 6, and the like from external impacts or dirt, or for easy gripping. The base body 9 is fixed by engaging with engagement holes 93 provided on the side surface and the rear side surface (see FIG. 1).

Next, the operation of the trigger spray of this embodiment will be described.
First, when a finger is applied to the slider 3 and pulled inward of the trigger spray A, the bottom end 32 (corresponding to a cam surface) in which the second end 73 of the balance arm 7 is formed inside the slider 3. As a result, the balance arm 7 rotates upward about the connecting shaft 72 as a rotation axis.
At this time, since the second end 73 is formed in a curved surface, friction with the slider 3 is reduced as much as possible.

When the second end 73 of the balance arm 7 rotates upward, the balance arm 7 pushes the piston 1 downward, so that the liquid in the cylinder 2 is compressed.
At this time, since the connecting shaft 72 is disposed between the contact portion between the slider 3 and the second end portion 73 and the pivoting portion between the balance arm 7 and the piston 1, the connecting tube 5 is connected to the piston 1. Follow the movement sufficiently.
As a result, the slider 3 can move smoothly.

The compressed liquid passes through the piston 1, passes through the connecting pipe 5, and is ejected from the nozzle portion 4 to the outside.
After the liquid is ejected from the nozzle unit 4, the finger is released from the slider 3, and the balance arm 7 is returned to the original position by the restoring force of the spring 6.
Then, since the piston 1 rises, the pressure in the cylinder 2 becomes negative, the first valve V1 is opened, and the liquid in the container is sucked up through the suction tube portion 8.

When the cylinder 2 is filled with the sucked liquid, the slider 3 is drawn again and the same operation is repeated.

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, FIG. 9 shows a slider having a stepped portion, but as shown in FIG. 9B, a stepped portion 32A (having a slope S and having a trapezoidal cross section) raised on the bottom wall portion 32 on the slider 3. Is formed).
In the state before the slider 3 is retracted, the second end 73 of the balance arm 7 is brought into contact with the front side of the slope S as shown in FIG. When moving, it can be made easy to slide along the slope S.
Therefore, the movement of the slider 3 becomes extremely smooth.

In order to make the movement of the slider 3 smoother, a rail (not shown) may be provided on the housing 10 so that a part of the slider 3 moves in contact with the rail.

In addition, for example, a cap having a plurality of types of ejection ports may be attached to the tip of the nozzle portion so that the shape of the liquid to be ejected when using the trigger spray can be selected.
Further, as shown in FIG. 3, it is possible to provide a stopper 100 for closing the nozzle portion 4.
It may be fixed by being hooked on the housing 10.
In this case, a hanging piece 101 is provided at the lower portion of the stopper 100, and this is hooked between the slider 3 and the base body 9 and fixed.

The outer shape of the trigger spray may be a shape other than a rectangle in cross section, for example, an ellipse, or a circle as shown in FIG.
In the case of FIG. 10, a cap-like stopper 100A corresponds to the stopper 100 described above.

The present invention relates to a trigger spray that ejects a liquid in a cylinder that is communicated with a container by pushing down a balance arm, which is a trigger, to the container and ejects the liquid from a nozzle. As long as this principle can be used, other spray mechanisms other than the present invention can be applied.

A ... Trigger spray 1 ... Piston 12 ... Engagement projection 2 ... Cylinder 3 ... Slider 31 ... Side wall 32 ... Bottom wall 32A ... Step 33 ... T-shaped member 4 ... Nozzle 5 ... Connecting pipe 6 ... Spring 61A ... Curved Spring part 61B ... Bent spring part 62A ... Connection part 62B ... Base part 7 ... Balance arm 7A ... Arm left part 7B ... Arm right part 7C ... Extension part 71 ... Engagement part 72 ... Connection shaft 73 ... Second end 74 ... 1st end 74A ... latching claw 8 ... suction tube part 9 ... base body 91 ... latching part 92 ... locking part 93 ... engaging hole 94 ... groove part 10 ... housing 100 ... stopper 101 ... drooping piece 201 ... piston 203 ... Slider 204 ... Nozzle part 207 ... Trigger member 210 ... Housing B ... Container K ... Notch S ... Inclined surface V1 ... First valve

Claims

A base body attached to the container mouth, a cylinder integrated with the base body,
A piston sliding in the cylinder;
A balance arm rotatably supported by the base body and having one end (first end) pivotally attached to the piston;
And a spring for applying a restoring force to the balance arm;
A slider that abuts the other end (second end) of the balance arm and rotates the balance arm by pressing in the horizontal direction;
A housing attached to the base body, a nozzle portion fixed to the housing, and a connecting pipe connecting the nozzle portion and the piston;
The connecting pipe is flexible;
A trigger spray characterized in that a liquid in a piston is ejected from a nozzle portion through a connecting pipe by pulling and moving a slider.
The trigger spray according to claim 1, wherein the slider is movable along the base body.
2. The trigger spray according to claim 1, wherein the base body is provided with a hook-like standing hook portion, and a balance arm is supported on the hook portion.
The trigger spray according to claim 1, wherein the balance arm has a second end moved upward and a first end moved downward by movement of the slider.
The spring is composed of a base and a curved spring portion that is bent in a U shape from the base and is connected at the tip, and the base is locked to a lock formed on the base body, and the link at the tip is a balance arm. The trigger spray according to claim 1, wherein the trigger spray is hooked on a hooking claw formed at the first end portion of the nozzle.
The trigger spray according to claim 1, wherein a notch for exposing the nozzle and the slider is formed in the housing.
The trigger spray according to claim 1, wherein a stopper for closing the nozzle portion is hooked on the housing.