JP2016088599A - Trigger type spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trigger type spray which can transmit a movement of a trigger part to a piston part efficiently, and can rotatably integrate the trigger part and a nozzle base part.SOLUTION: A trigger type spray A attached to a container by a cap part 10 comprises: a cylinder structure part 1 having a large-diameter cylinder part 1A and a small-diameter cylinder part 1B; a flow channel change part 2 attached to the small-diameter cylinder part; a nozzle base part 3 attached to the flow channel change part; a nozzle part 4 attached to the nozzle base part; a piston part 5 sliding inside the large-diameter cylinder part; a valve structure body 6 inserted into the small-diameter cylinder part; a trigger part 7 which is attached rotatably and integrally to a nozzle part base part, and moves the piston part in a forward/backward direction; and a trigger recovery spring body 8 for recovering the trigger part. In the trigger type spray, a content is jetted from the nozzle part to the outside.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a trigger type spray, and more particularly to a trigger type spray that can efficiently transmit a movement of a trigger part to a piston part.

Currently, a trigger spray has been developed that pulls the trigger, presses the piston, applies pressure to the liquid in the cylinder, and discharges it from the nozzle.
In addition, a pressure-accumulation type has been developed for this trigger type spray that allows the liquid in the cylinder to be ejected from the nozzle at once.
Here, the principle of these trigger sprays is to move the piston portion by rotating the trigger portion, and there must be a pivot point for rotation.
This fulcrum needs to be installed in a portion that does not move. For example, Patent Document 1 discloses a trigger spray in which a fulcrum is provided on a body.

Specifically, the U-shaped bearing portion formed on the body body is fitted with a rotating shaft that is formed to protrude from the upper end of the trigger body, and a recess is formed below the trigger body. This recessed part presses the front-end | tip of a piston push rod, and moves the piston body in a cylinder part.
A rotation shaft of the trigger body is fitted into a bearing portion of the body body and is rotatably attached. A portion of the bearing portion of the body body serves as a fulcrum for the movement of the trigger body.
However, since the bearing portion and the rotating shaft are fitted, the contact surface is worn out while the trigger spray is used, and the gap between the two is increased and play is likely to occur. The presence of play means that a backlash occurs at a fulcrum when a so-called trigger portion is rotated.
If such play occurs, the trigger portion cannot efficiently transmit force to the piston portion.
And the trigger cannot be operated smoothly.

JP 2014-128779 A

The present invention has been made against the background of the above problems.
That is, this invention relates to the trigger type spray which can transmit the motion of a trigger part to a piston part efficiently.

  As a result of intensive studies to solve the above problems, the present inventors have found that the above problems can be solved by integrating the trigger part and the nozzle base so as to be rotatable, and the present invention has been completed. It was.

  The present invention is (1) a trigger spray A that is attached to a container by a cap 10 and is attached to the cylinder structure 1 having a large diameter cylinder 1A and a small diameter cylinder 1B, and the small diameter cylinder 1B. The flow path changing portion 2, the nozzle base portion 3 attached to the flow passage changing portion 2, the nozzle portion 4 attached to the nozzle base portion 3, and the piston sliding in the large diameter cylinder portion 1 </ b> A The valve structure 6 inserted in the part 5 and the small diameter cylinder part 1B, the trigger part 7 which is pivotally attached to the nozzle base part 3 and moves the piston part 5 in the front-rear direction, and the trigger part 7 is returned. A spring body 8 for returning the trigger, and the liquid in the large-diameter cylinder portion 1A is pressed to flow through the small-diameter cylinder portion 1B, the flow path changing portion 2, and the nozzle portion base portion 3. To be injected from the pole tip 4 to the outside lies the trigger spray A.

  The present invention resides in (2) the trigger type spray A described in the above (1) in which the trigger portion 7 is integrally formed with the nozzle base portion 3 via the connecting shaft J.

  According to the present invention, (3), the trigger portion 7 has a bifurcated portion 71 that is bifurcated, and the bifurcated portion 71 is coupled to both sides of the nozzle base portion 3 via the connecting shaft J in a state of sandwiching the nozzle base portion 3. It exists in the trigger type spray A described in the above (1).

  The present invention resides in (4) the trigger spray A according to the above (2), wherein the connecting shaft J is formed with a notch groove N that increases torsion.

  The present invention resides in (5) the trigger type spray A according to the above (1), wherein the valve structure 6 includes the F valve 6A and the S valve 6B and the spring body 6C that repels both in a direction away from each other. .

  The present invention resides in (6) the trigger spray A according to the above (1), wherein the large-diameter cylinder portion 1A has a space portion S.

  In addition, as long as the objective of this invention is followed, the structure which combined said (1)-(6) suitably can be employ | adopted naturally.

  The trigger type spray of the present invention is a trigger type spray attached to a container by a cap part, a cylinder structure part having a large diameter cylinder part and a small diameter cylinder part, and a flow path changing part attached to the small diameter cylinder part A nozzle base attached to the flow path changing portion, a nozzle portion attached to the nozzle base, a piston portion sliding in the large diameter cylinder portion, and a valve structure inserted in the small diameter cylinder portion And a trigger part that is pivotally attached to the nozzle base and moves the piston part in the front-rear direction, and a trigger return spring body that returns the trigger part, and the liquid in the large-diameter cylinder part is pressurized. Since it is a small diameter cylinder part, a flow path changing part, and a nozzle base part and is injected outside from the nozzle part, Between the nozzle base, the movement of the occurrence of the conventional backlash as is without any trigger part can be efficiently transmitted to the piston unit The number of embedded parts are fewer, it is reduced and manufacturing cost.

  Since the trigger portion is formed integrally with the nozzle base via the connection shaft J, the trigger portion is easily rotated by twisting of the connection shaft.

  The trigger portion has a bifurcated branch portion, and this branch portion is coupled to both sides of the nozzle base portion via the connection shaft so that the axis of the connection shaft is stable. .

  Since the connection shaft is formed with a notch groove N that increases the ease of twisting, the twist is easily twisted, and the ease of twisting can be adjusted by changing the number of notch grooves.

  Since the valve structure is composed of a spring body that repels both the F valve and the S valve in directions away from each other, the strength of pressure accumulation can be changed by changing the strength of the spring body.

  Since the large-diameter cylinder part has the space part S, the cylinder part and the piston part are easily pressed against each other, and the sealing performance is enhanced.

Drawing 1 is an outline view showing a trigger type spray concerning an embodiment. FIG. 2 is a cross-sectional view of the trigger spray before the stroke of the trigger spray according to the embodiment is made. FIG. 3 is a cross-sectional view after a half stroke of the trigger portion showing the trigger type spray according to the embodiment. FIG. 4 is a cross-sectional view after a full stroke of the trigger portion showing the trigger spray according to the embodiment. FIG. 5 is a perspective view showing a trigger return spring body according to the embodiment. FIG. 6 is a diagram illustrating an arrangement state of the trigger return spring body according to the embodiment. FIG. 7 is a front view illustrating a combined state of the nozzle base portion and the trigger portion according to the embodiment. FIG. 8 is a side view showing a combined state of the nozzle base portion and the trigger portion according to the embodiment. FIG. 9 shows a combined state of the nozzle base portion and the trigger portion according to the embodiment, and (A) and (B) are XX cross sections in FIG. FIG. 10 is a partial cross-sectional view showing another embodiment of the valve structure of the trigger type spray.

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.

The trigger type spray A of the present invention is a trigger type spray A that is attached to a container by a cap portion 10 and is used by being fixed to a mouth portion of the container by, for example, screwing or the like.
Drawing 1 is an outline view showing trigger type spray A concerning an embodiment.
FIG. 2 is a cross-sectional view before the trigger portion 7 showing the trigger type spray A according to the embodiment is stroked, and FIG. 3 is a half stroke of the trigger portion 7 showing the trigger type spray A according to the embodiment. FIG. 4 is a cross-sectional view after the full stroke of the trigger portion 7 showing the trigger spray A according to the embodiment.
The trigger spray A is attached to the cylinder structure part 1 having a large diameter cylinder part 1A and a small diameter cylinder part 1B, a flow path changing part 2 attached to the small diameter cylinder part 1B, and the flow path changing part 2. A nozzle base portion 3 and a nozzle portion 4 attached to the nozzle base portion 3 are provided.
Furthermore, the trigger type spray A is integrally attached to the nozzle base 3 so as to be rotatable, and is integrally attached to the piston portion 5 sliding in the large diameter cylinder portion 1A, the valve structure 6 inserted in the small diameter cylinder portion 1B, and the nozzle base 3. Is provided with a trigger portion 7 for moving the trigger portion 7 in the front-rear direction and a trigger return spring body 8 for returning the trigger portion 7.

FIG. 5 is a perspective view showing the trigger return spring body 8 according to the embodiment, and FIG. 6 is a view showing an arrangement state of the trigger return spring body 8 according to the embodiment.
As shown in FIG. 5, the trigger returning spring body 8 has a U-shape when viewed from the top, and includes a base column part 81 and arched wing pieces 82, 82 extending from both ends thereof.

Then, as shown in FIG. 6, the base column portion 81 is fitted into the groove of the trigger portion 7, and the tips of the blade pieces 82 and 82 are fitted into the groove of the cylinder structure portion 1 and attached.
A rib is formed on the outer periphery of the cylinder structure portion 1, and the rib is sandwiched and fixed by a cap between a mouth portion of a container (not shown).
The cylinder structure portion 1 includes a large-diameter cylinder portion 1A disposed in the front-rear direction, a small-diameter cylinder portion 1B disposed in the up-down direction, and a cylindrical base portion 1C that is a portion used for connecting the container.
A tube 9 serving as a passage for sucking up the liquid in the container is attached to the cylindrical base 1C.

The piston part 5 slides in the front-rear direction in the large-diameter cylinder part 1A, and pressurizes the liquid in the large-diameter cylinder part 1A.
A first through hole H1 is provided above the wall portion 1D between the large diameter cylinder portion 1A and the small diameter cylinder portion 1B, and a second through hole H2 is provided below the wall portion 1D. .
The liquid sucked up from the container is sucked up through the tube 9 and enters the large-diameter cylinder portion 1A through the second through hole.
The liquid is pressurized in the large diameter cylinder portion 1A and flows to the small diameter cylinder portion 1B through the first through hole H1.
Then, the small diameter cylinder part 1B reaches the nozzle 4 part through the flow path changing part 2 and the nozzle base part 3, and the liquid is sprayed to the outside.

Next, a connecting portion between the nozzle base 3 and the trigger portion 7 which is one of the important features of the present invention will be described.
FIG. 7 is a front view illustrating a combined state of the nozzle base 3 and the trigger unit 7 according to the embodiment, and FIG. 8 is a side view illustrating a combined state of the nozzle base 3 and the trigger unit 7 according to the embodiment. is there.
An upper end portion of the trigger portion 7 is integrally attached to the nozzle base portion 3 so as to be rotatable, and this coupling portion serves as a connection shaft (fulcrum for rotation) J.
More specifically, the trigger portion 7 has bifurcated portions 71 and 71 bifurcated, and both sides of the nozzle base portion 3 are connected to each other via the connecting shaft J in a state where the branched portion sandwiches the cylindrical nozzle base portion 3. Is bound to.
The trigger portion 7 and the nozzle base portion 3 are integrally formed by injection molding, and a connecting portion of both is a connecting shaft J.
Even if the trigger part 7 is rotated, the nozzle base part 3 does not move, so that the connecting shaft J becomes a so-called buffer part for adjusting the movement of the trigger part 7.
That is, the connecting shaft J plays a role such that the movement of the trigger portion 7 does not reach the nozzle base 3 by twisting each time the trigger portion 7 is rotated.

FIG. 9 shows a combined state of the nozzle base 3 and the trigger portion 7 according to the embodiment, and (A) and (B) are cross sections taken along line XX in FIG.
Here, in the present embodiment, as shown in the figure, it is preferable that a notch groove N is formed in the connecting shaft J, which makes the connecting shaft J easy to twist.
The notch groove J is provided with a notch toward the center, and the presence of the notch groove allows the connecting shaft J to be easily twisted without causing distortion.
As shown in FIG. 7B, a plurality of the cutout grooves N can be provided on the connection shaft J. The greater the number, the easier the twisting.
By the way, the middle of the trigger portion 7 is connected to the tip portion of the piston portion 5 (specifically, the tip portion of the piston shaft 51) by fitting.
Accordingly, when the finger is pulled by pulling on the finger hooking portion of the trigger portion 7, the piston portion 5 rotates around the connecting shaft J described above to move the piston portion 5 backward.

On the other hand, the flow path changing section 2 is attached to the small diameter cylinder section 1B, and changes the liquid flow path from the vertical direction to the front-rear direction.
A nozzle base 3 is attached to the tip of the flow path changing portion 2, and a nozzle portion 4 is attached to the tip of the nozzle base 3, and the liquid is ejected from the nozzle hole of the nozzle portion 4. .
The attachment of the flow path changing portion 2 and the small diameter cylinder portion 1B, the attachment of the flow passage changing portion 2 and the nozzle base portion 3, and the attachment of the nozzle base portion 3 and the nozzle portion 4 are respectively performed by press-fitting as the nozzle portion 4. There are those that can form bubbles and further change the spray state in stages, and if they can be attached to the nozzle base 3, these can be used as appropriate.

On the other hand, a valve structure 6 (F valve 6A, S valve 6B, and spring body 6C) is mounted on the small diameter cylinder portion 1B of the cylinder structure 1, and between the F valve 6A and the S valve 6B, The coil-shaped spring body 6C which acts in the direction away from each other is interposed.
In a state in which the valve structure 6 is mounted on the small diameter cylinder portion 1B, the lower end of the F valve 6A abuts on the bottom surface of the small diameter cylinder portion 1B, and the upper end (valve body) of the S valve 6B is provided in the flow path changing portion 2. It abuts against the valve seat portion 21 thus formed.
Normally, the upper end of the S valve 6B is in pressure contact with the valve seat portion 21 by the elastic force of the spring body 6C.
The valve structure 6 having such a spring body 6C can exhibit a function as a so-called pressure accumulation valve.
That is, the hydraulic pressure in the small-diameter cylinder portion 1B becomes a certain height, and the S valve 6B and the valve seat portion 21 are instantaneously separated from each other, and the liquid passes through the gap vigorously.

On the other hand, in order to avoid exposing the main part of the cylinder structure 1, the flow path changing part 2, and the nozzle base 3, the cover body 11 is engaged with the cylinder structure 1 at the lower end and the nozzle base 3 with the upper end. It is attached together.
The configuration of the trigger type spray A has been described above. As a preferable material of the component constituting the trigger type spray A, the piston portion 5 and the S valve portion 6B are PE, the trigger return spring body 8 is POM, and the other is PP. used.
Further, metal (SUS) is used for the spring body 6C of the valve structure 6.

(how to use)
Here, the procedure for using the trigger spray A will be described with reference to FIGS.
As shown in the figure, the trigger portion 7 is first retracted and rotated with the connecting shaft J as a fulcrum.
Then, the piston part 5 in the large-diameter cylinder part 1A slides backward in conjunction with the rotation of the trigger part 7, and the liquid in the large-diameter cylinder part 1A is added based on the sliding of the piston part 5. Pressed.
Therefore, the liquid in the large diameter cylinder part 1A enters the small diameter cylinder part 1B through the first through hole H1 of the wall part 1D between the large diameter cylinder part 1A and the small diameter cylinder part 1B.
Thus, when a certain pressure is applied to the small diameter cylinder portion 1B, the valve structure 6 is pushed down.
Specifically, the valve seat opens from the valve seat portion 21 of the flow path changing portion 2 away from the front end surface of the valve structure 6 (specifically, the upper end of the S valve 6B).

The F valve 6A is closed when pressure is applied to the large diameter cylinder portion 1A and the small diameter cylinder portion 1B.
When the valve is opened in the S valve 6B, the accumulated liquid flows rapidly from the small diameter cylinder portion 1B to the flow path changing portion 2.
Then, it reaches the nozzle part 4 through the nozzle base part 3 and is finally ejected from the nozzle hole to the outside.
Thereafter, when the pressure of the small diameter cylinder portion 1B and the large diameter cylinder portion 1A is released and reaches a predetermined pressure, that is, when the internal pressure is reduced by the spring force pushing up the S valve, the upper end of the S valve 6C comes into contact with the valve seat. Then the valve is closed again.

On the other hand, when the trigger portion 7 is released after the liquid is ejected, the trigger portion 7 returns to the original position by the return force of the trigger return spring body 8 and the piston portion 5 slides forward in the large diameter cylinder portion 1A. It moves and the space in the large diameter cylinder part 1A becomes a negative pressure.
Then, the F valve 6A of the valve structure 6 is opened in order to eliminate the negative pressure in the large-diameter cylinder portion 1A, and the liquid in the container (not shown) is sucked up through the tube 9 and passes through the second passage. The diameter cylinder portion 1A12 is filled.
When the liquid in the container decreases, external pressure is applied to the container due to negative pressure and the container is crushed. In order to avoid this, a negative pressure release hole is provided in the cylinder structure, but description thereof will be omitted.

In the trigger type spray A according to the present embodiment, by repeating such an operation, a certain amount of liquid is repeatedly ejected from the nozzle part 4 part.
Thus, when the trigger type spray A is used by rotating the trigger portion 7, the trigger portion 7 and the nozzle base portion 3 are integrated with each other via the connecting shaft J. There is no rattling between.
Therefore, the movement of the trigger part 7 can be efficiently transmitted to the piston part 5.

Although the present invention has been described above, the present invention is not limited to the embodiments, and various modifications can be made.
For example, the valve structure 6 may be formed by integrally forming an F valve 6A, an S valve 6B, and a spring body 6C.

FIG. 10 is a partial sectional view showing another embodiment of the valve structure 6 of the trigger spray A. As shown in FIG.
In this embodiment, the F valve 6A, the S valve 6B, and the spring body 6C are integrally molded (for example, injection molding), the number of parts is reduced, and manufacturing efficiency and assembly efficiency are good.
The entire material is made of PP, for example.
In this case, the spring body 6C has a cylindrical shape and is provided with a pair of upper and lower stoppers 6C1 and 6C1. The stoppers 6C1 and 6C1 collide with each other to prevent further opening of the S valve 6B.
The valve structure 6 may have a normal valve function without providing such a pressure accumulating valve function.

  Since the trigger type spray of the present invention is provided with a trigger part that is pivotally attached to the nozzle base and moves the piston part in the front-rear direction, the advantage that the movement of the trigger part can be efficiently transmitted to the piston part. Yes, the valve can be applied regardless of pressure accumulation or direct pressure.

DESCRIPTION OF SYMBOLS 1 ... Cylinder structure part 1A ... Large diameter cylinder part 1B ... Small diameter cylinder part 1C ... Cylindrical base part 1D ... Wall part 2 ... Flow path change part 21 ... Valve seat part 3 ... Nozzle base 4 ... Nozzle part 5 ... Piston part 51 ... Piston shaft part 6 ... Valve structure 6A ... F valve 6B ... S valve 6C ... Spring body 7 ... Trigger part 71 ... Branch part 8 ... Trigger-return spring body 81 ... Base pillar part 82 ... Wing piece 9 ... Tube 10 ... Cap part 11 ... Cover Part A ... Trigger type spray H1 ... First through hole H2 ... Second through hole J ... Connection shaft S ... Space part

Claims (6)

A trigger spray attached to a container by a cap part, a cylinder structure part having a large diameter cylinder part and a small diameter cylinder part, a flow path changing part attached to the small diameter cylinder part, and a flow path changing part An attached nozzle base, and a nozzle part attached to the nozzle base;
A piston part sliding in the large diameter cylinder part and a valve structure inserted in the small diameter cylinder part;
A trigger part that is integrally attached to the nozzle base so as to be rotatable and moves the piston part in the front-rear direction, and a trigger return spring body for returning the trigger part,
A trigger type spray characterized in that the liquid in the large-diameter cylinder part is pressurized and flows through the small-diameter cylinder part, the flow path changing part, and the nozzle part base part and is sprayed to the outside from the nozzle part.   The trigger spray according to claim 1, wherein the trigger portion is integrally formed with the nozzle base portion via a connecting shaft.   2. The trigger type spray according to claim 1, wherein the trigger portion has a bifurcated portion that is bifurcated, and the bifurcated portion is coupled to both sides via a connecting shaft in a state of sandwiching the nozzle base portion. .   3. The trigger type spray according to claim 2, wherein the connecting shaft is formed with a notch for increasing twist.   2. The trigger type spray according to claim 1, wherein the valve structure comprises a spring body that repels both the F valve and the S valve in directions away from each other. The trigger spray according to claim 1, wherein the large-diameter cylinder portion has a space portion.

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