JP2006116407A - Pump dispenser with trigger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump dispenser with a trigger, in which a stopper for restraining the movement of the trigger can be released in such a state that the pump dispenser is grasped in one hand. <P>SOLUTION: This pump dispenser 1 with the trigger has such a structure that the movement of the trigger 4c is hindered by the stopper 4e, the base part 4e1 of the stopper is connected hingewise to the body part 4a of the dispenser, the tip of the stopper is locked to the trigger while being pressed downward and the lock of the stopper is released by moving the trigger. In the concrete, the tip of the stopper is locked to the trigger while being pressed downward by a suppressive piece projected from the trigger or by an upper forked piece, which is locked to the inner wall of a receiving hole formed on the trigger, of the biforked tip of the stopper. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a pump dispenser with a trigger in which a piston descends or a piston moves to the right by pulling a trigger.
In particular, the present invention relates to a pump dispenser with a trigger in which the trigger is restrained by a stopper attached via a hinge portion.

Conventionally, a pump dispenser with a trigger having a structure as shown in FIG. 12 is known (see Patent Document 1).
The pump dispenser 100 includes a synthetic resin short cylindrical cap 101, and a synthetic resin cover member 102 is attached above the cap 101.

The cover member 102 includes a cylindrical body portion 102a disposed along the container axial direction, a hinge portion 102b provided on the side opposite to the liquid spray side, and a hinge portion 102b disposed on the liquid spray side. And a trigger 102c integrated so as to be movable.
The hinge portion 102b is formed by bending a part of the cover member 102 into a small arc shape, and this portion serves as a fulcrum when the trigger 102c is rotated.

A plate-like stopper 102d for preventing the trigger 102c from rotating is provided on the body 102a of the cover member 102 so as to be rotatable through a thin portion.
When the pump dispenser 100 having such a structure is not used, the rotation of the trigger 102c is restricted (that is, prevented) by the stopper 102d.

In use, the trigger 102c can be rotated by releasing the restraint of the stopper 102d.
More specifically, by pushing down the stopper 102d downward during use, the tip is removed from the trigger 102c and the restraint is released.
Japanese Patent Application No. 2004-31328

However, in the pump dispenser 100 described above, when the restraint of the trigger 102c is released, the stopper 102d is not pushed down and the tip of the stopper 102d and the recess of the trigger 102c cannot be latched.
This is because the tip of the stopper 102d is usually fitted in the recess of the trigger 102c so that an infant or the like cannot easily release the stopper 102d by mistake, and the stopper is required to escape from the recess. This is because 102d is strongly pushed down to bend and remove.
Since the operation of pushing down the stopper 102d is in a direction perpendicular to the direction in which the trigger 102c is rotated, it is usually very difficult to remove when the finger 102 is held on the trigger 102c of the pump dispenser 100 with one hand. It is difficult.

For this reason, it is necessary to use the other hand to push down and remove the stopper 102d.
Therefore, there has been a demand for a pump dispenser 100 that can easily and reliably remove the stopper 102d in a state where the pump dispenser 100 is normally gripped.

The present invention has been made based on such a background, and can overcome the conventional problems.
That is, an object of the present invention is to provide a pump dispenser with a trigger that can release a stopper that restricts the movement of the trigger while the pump dispenser is held with one hand.

  Thus, as a result of earnest research on the background of such problems, the present inventor has solved the above problem by releasing the trigger constraint not by rotating the stopper but by rotating the trigger backward. The present inventors have found that the problem can be solved, and have completed the present invention based on this finding.

  That is, the present invention is (1) a pump dispenser with a trigger having a structure in which the movement of the trigger is blocked by a stopper, wherein the base of the stopper is hinged to the body of the dispenser, and the tip of the stopper is attached downward. It exists in the pump dispenser with a trigger which is latched by the trigger in the energized state, and this latch is cancelled | released by moving a trigger.

  And (2), the tip part of the said stopper exists in the pump dispenser with a trigger of the said (1) description latched by a trigger in the state urged | biased below by the elastic piece protrudingly provided from the trigger.

  (3) A receiving hole is formed in the trigger, and the bifurcated tip end portion of the stopper is hooked downwardly on the inner wall of the receiving hole by the upper crotch piece. It exists in the pump dispenser with a trigger as described in said (2).

  (4) When the tip of the trigger is rotated in a direction to release the stopper, the lower crotch piece of the bifurcated tip is separated from the inner wall of the receiving hole of the trigger. The pump dispenser with a trigger according to the above (3), in which the stopper is forcibly pushed down by the elastic pressure of the upper crotch piece.

  And (5), the stopper is in a state of being vertically positioned (along a cap attached to the barrel of the dispenser), and the base portion of the stopper projects from the barrel of the dispenser. It exists in the pump dispenser with a trigger as described in said (1) engaged.

  (6) A pump dispenser with a trigger according to (1), wherein a receiving hole is formed in the trigger, and an inner wall of the receiving hole is engaged with a tip of a lower stopper. Exist.

  And the pump dispenser with a trigger of any one of (7) and said (1) thru | or (6) exists in the pump dispenser with a trigger which is a piston vertical movement type.

  And (8), the pump dispenser with a trigger of any one of said (1) thru | or (6) exists in the pump dispenser with a trigger which is a piston right-and-left movement type.

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

  According to the present invention, the base portion of the stopper is hinged to the barrel portion of the dispenser, and the tip end portion of the stopper is hooked on the trigger in a state of being biased downward, so that the pump dispenser 100 is grasped with one hand. If the trigger is moved in a direction to release the latch with the stopper, the stopper is pushed downward by the urging force, and the tip of the stopper is forcibly separated from the latch portion of the trigger.

  Therefore, there is an advantage that the stopper for restraining the movement of the trigger can be easily and surely removed in a state where the finger of the pump dispenser is held with one hand and held with one hand.

  Further, since the trigger is rotated in the clockwise direction, that is, the direction opposite to the normal rotation direction to release the stopper, it is possible to prevent an infant or the like from being erroneously released.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows a pump dispenser with a trigger (piston vertical movement type) according to a first embodiment of the present invention.
1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a side view.
The pump dispenser 1 includes a short cylindrical cap 2 made of synthetic resin.
On the outer peripheral surface of the cap 2, a number of anti-slip grooves are formed at regular intervals along the cap thickness direction.

On the other hand, a cover member 4 made of synthetic resin is attached to the cap 2.
An introduction hose 3 for sucking up the liquid in the container is provided below the cap 2.
The cover member 4 is disposed on the liquid spray side, a cylindrical body portion 4a disposed along the container axial direction, a hinge portion 4b provided on the side opposite to the liquid spray side (the side where the nozzle 5 is provided), and And a trigger 4c that is pivotally integrated via a hinge portion 4b.

The hinge portion 4b is formed by bending a part of the cover member 4 into a small arc shape, and this portion serves as a fulcrum when the trigger 4c is rotated.
The cover member 4 is formed with a plate-like annular hook 4d for supporting the pump dispenser 1 on the side opposite to the trigger 4c.

When the pump dispenser 1 is used, the pump dispenser 1 is supported by holding the trigger 4c with another finger by placing a thumb on the lower end of the hook 4d, instead of passing a finger through the hook 4d.
The hook 4d is formed in an annular shape, for example, for hooking the pump dispenser 1 on a support such as a wall.

On the other hand, on the opposite side of the cover member 4 from the hook 4d, a plate-like stopper 4e for preventing the trigger 4c from rotating is provided so as to be rotatable through a thin portion.
The latching structure between the stopper 4e and the trigger 4c is the greatest feature of the present invention.
The base portion 4e1 of the stopper 4e is hinged to the protruding portion 4a1 of the body portion 4a via a thin portion.
The stopper 4e is formed in a bifurcated shape, and the bifurcated tip portion is reduced in its width so that an urging force is exerted and is elastically engaged with the trigger 4c.

More specifically, the stopper 4e is hooked between the protrusions 4c1 and 4c2 formed at two locations on the inner wall of the trigger 4c in a state where the tip is elastically deformed in a direction in which the distance between the two branches is reduced. Being held.
A receiving hole 4c3 penetrating in the thickness direction of the trigger 4c is formed in a portion where the protrusions 4c1 and 4c2 are formed.
The receiving hole 4c3 is a through hole in which a first hole formed in the lateral direction of the trigger 4c communicates with a second hole in the vertical direction.

When the pump dispenser 1 is not used, the rotation of the trigger 4c is restrained by the stopper 4e. However, when the pump dispenser 1 is used, the stopper 4e is released and the trigger 4c can be rotated.
Specifically, the trigger 4c is rotated in a direction to unlock the stopper 4e (clockwise direction), and the lower crotch piece 4e2 is a lower projection 4c2 that is an inner wall of the receiving hole 4c3 of the trigger 4c. The stopper 4e is forcibly pushed downward by the elastic pressure of the upper crotch piece 4e3.
This depression acts to protrude.

Fig.2 (a) has shown the cross section of the vertical direction of the pump dispenser 1 of FIG.
As shown in the figure, a cylinder 8 is provided inside the body 4 a of the cover member 4, and a piston P is provided inside the cylinder 8.
The piston P is slidable in the cylinder 8 along the height direction (vertical direction) of the pump dispenser 1.
In other words, the pump dispenser 1 is a piston dispenser 1 that moves up and down the piston.

FIG. 2 (b) shows an enlarged view of the state where the trigger 4c and the stopper 4e are hooked.
As described above, the trigger 4c is formed with the receiving hole 4c3, and is latched in a state where the bifurcated tip of the stopper 4e is urged downward by the upper crotch piece 4e3 on the inner wall of the receiving hole 4c3. Has been.

The lower crotch piece 4e2 is locked to the tip of the lower projection 4c2 formed on the inner wall. In this state, the stopper 4e is not released even if the stopper 4e is pressed down considerably.
Here, for example, as shown in the drawing, the term “lock” refers to a state in which the tip shapes of the trigger 4c and the stopper 4e are curved and are hooked to each other.

  When the tip of the trigger 4c is rotated in the direction to unlock the stopper 4e (clockwise), the lower crotch piece 4e2 of the bifurcated tip is the inner wall of the receiving hole 4c3 of the trigger 4c (details). Is disengaged from the protrusion 4c2), and receives a specific action that the stopper 4e is forcibly pushed downward by the elastic pressure of the upper crotch piece 4e3 instantaneously.

Hereinafter, the operation in which the stopper 4e is forcibly pushed down by the elastic force of the upper crotch piece 4e3 will be described in detail with reference to FIGS.
FIG. 3 shows a state in which the stopper 4e is hooked on the trigger 4c (see FIG. 7A).
Now, from this state, the trigger 4c is rotated clockwise, that is, upward.
The angle for reversely rotating the trigger 4c is preferably set to 1.5 degrees, for example.

FIG. 4 shows a state in which the trigger 4c is rotated upward (see FIG. 7B).
As shown in the drawing, here, the lower crotch piece 4e2 of the stopper 4e is unlatched with the lower projection 4c2, while the tip of the upper crotch piece 4e3 is located at the projection 4c1. Stay in contact.
That is, it is a state immediately before the interval between the bifurcated tip portions of the stopper 4e that has been elastically deformed is about to be widened by the elastic force.

  Then, as shown in FIG. 5, the interval between the two forks of the stopper 4 e is widened, and the upper crotch piece 4 e 3 kicks up the protrusion 4 c 1 by the elastic force, so that the stopper 4 e itself is pushed down vigorously counterclockwise. (See FIG. 7 (c)).

When the elastic pressure of the upper crotch piece 4e3 is strong, the stopper 4e is pushed down to a position approaching the cap 2.
Here, FIG. 6 shows a state in which the stopper 4e is pushed down to the vertical direction by using a finger or the like and the base portion 4e1 is engaged with the groove formed in the protruding portion 4a1 (see FIG. 7D).
By doing so, it is possible to prevent the stopper 4e from swinging freely during use of the pump dispenser 1.
Note that the engagement between the base portion 4e1 and the protruding portion 4a1 can be easily removed by pulling the stopper 4e in the reverse direction with a finger.

FIG. 8 shows a state where the trigger is pulled to the maximum.
In this case, since the trigger 4c is pressed against the crotch piece 4e3 of the stopper 4e, there is no impact and a soft touch can be obtained.
When the pressing of the trigger 4c is released, the trigger 4c is rotated clockwise by a return structure (not shown) and returned to the original position.

In the first embodiment described above, the base 4e1 of the stopper 4e is hinged to the body 4a of the dispenser 1, and the tip of the stopper 4e is hooked on the trigger 4c while being biased downward. When 4c is moved in a direction to release the latch with the stopper 4e, the stopper tip is separated from the latch portion with the trigger 4c, and the stopper 4e is pushed downward by the elastic pressure.
Therefore, the stopper 4e for restraining the movement of the trigger 4C can be easily and reliably removed in a state where the finger 4 is held on the trigger 4C of the pump dispenser 1 with one hand.

  In addition, since the trigger 4c is rotated in the direction opposite to the direction in which the trigger 4c is pulled to release the stopper 4e, it is difficult for an infant or the like to easily move the trigger 4c in the reverse direction. It is possible to prevent the trigger 4c from being unintentionally released.

  In particular, when the trigger 4c is rotated in the direction to release the latch, the lower crotch piece 4e2 is first removed from the inner wall of the receiving hole 4c3 of the trigger 4c. Thus, the stopper 4e is forcibly protruded downward, so that even if the pump dispenser 1 is tilted or extremely reversed, the restraint of the trigger can be reliably released.

(Modification)
Here, the modification of the latch structure of the trigger 4c and the stopper 4e of the pump dispenser 1 (piston vertical movement type) of 1st Embodiment mentioned above is demonstrated.
FIG. 9 shows a pump dispenser 1 according to this modification. FIG. 9 (a) shows a longitudinal section of the pump dispenser 1, and FIG. 9 (b) shows a state where the trigger 4c and the stopper 4e are latched. It is shown enlarged.

The internal structure of the pump dispenser 1 of this modification is the same as that of the first embodiment described above, but only the shapes of the trigger 4c and the stopper 4e are different.
A receiving hole 4c3 is formed in the trigger 4c of this modification, and an elastic piece 4c1a projects from the receiving hole 4c3.
The inner wall of the receiving hole 4c3 and the tip of the stopper 4e are hooked, and the stopper 4e is urged downward by the elastic piece 4c1a of the trigger 4c.

Since the action of the urging force of the stopper 4e in this modification is different from that described above, the operation of forcibly protruding the stopper 4e downward by the elastic pressure of the elastic piece 4c1a will be described below using the schematic diagram of FIG. Will be described in turn.
FIG. 10A shows a state in which the stopper 4e is locked to the trigger 4c.
Then, the trigger 4c is rotated upward from this state, and the hook of the tip of the stopper 4e and the protrusion 4c2 is released.
FIG. 10B shows a state in which the stopper 4e is just released and is pushed downward.
Then, as shown in FIG. 10 (c), the stopper 4e is forcibly pushed downward by the elastic pressure of the elastic piece 4c1a that has been elastically deformed.
The stopper 4e also acts so as to project the elastic piece 4c1a.

  FIG. 10D shows a state in which the stopper 4e is pushed down to the vertical direction using a finger or the like, and the base portion 4e1 is engaged with a groove formed in the protruding portion 4a1 (see FIG. 9).

In the pump dispenser 1 of this modified example, since the portion (pressing piece 4c1a) that biases the stopper 4e is formed on the trigger 4c, the degree of freedom of the shape of the portion that presses the stopper 4e can be increased.
When the stopper 4e is bifurcated as in the first embodiment and one of them is an elastic piece, the size and thickness of the elastic piece are limited, but this is done by using a part of the trigger 4c as an elastic piece. The problem is solved.

[Second Embodiment]
FIG. 11 shows a pump dispenser with a trigger (piston left-right movement type) according to a second embodiment of the present invention.
FIG. 11A is a front view, FIG. 11B is a plan view, and FIG. 11C is a side view.

In the pump dispenser 1, the piston P moves to the right by rotating the trigger 6 downward.
Note that the piston left-right movement type refers to a type in which the piston P that operates when spraying liquid moves to the left and right, as indicated by a chain line in FIG.

Although the present invention has been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various other modifications are possible without departing from the essence thereof.
For example, in the first and second embodiments described above, the example in which the tip end side of the stopper 4e is bifurcated has been described, but the shape of the upper and lower crotch pieces can be deformed.
In short, it is only necessary to have a shape that is elastically hooked to the trigger.

The present invention relates to a pump dispenser that manually discharges a highly viscous liquid such as a shampoo or discharges and sprays a low viscosity liquid such as a lotion. It can be applied to the field of containers, and its application field is wide-ranging.

FIG. 1 is an explanatory view showing a pump dispenser with a trigger (piston vertical movement type) according to a first embodiment of the present invention, FIG. 1 (a) is a front view, FIG. 1 (b) is a plan view, and FIG. 1 (c) is a side view. 2 is an explanatory view showing an internal structure of the pump dispenser of FIG. 1, wherein (a) is a longitudinal section of the pump dispenser of FIG. 1, and (b) is an enlarged view of a state where the trigger and the stopper are latched. . FIG. 3 is an explanatory view showing a state in which the stopper is hooked on the trigger. FIG. 4 is an explanatory view showing a state in which the trigger is rotated upward. FIG. 5 is an explanatory view showing a state where the stopper and the trigger are released and pushed down. FIG. 6 is an explanatory view showing a state in which the stopper is hooked on the lid portion attached to the body portion of the pump dispenser. FIG. 7 is an explanatory view schematically showing a change in the position of the stopper described in FIGS. 3 to 6. FIG. 8 is an explanatory diagram showing a state where the trigger is pulled to the maximum. 9A and 9B are explanatory views showing a modification of the pump dispenser of FIG. 1, wherein FIG. 9A is a longitudinal sectional view of the pump dispenser, and FIG. 9B is an enlarged view of a hooked state between the trigger and the stopper. 10A and 10B are explanatory views schematically showing changes in the position of the stopper, where FIG. 10A is a state where the stopper is hooked on the trigger, FIG. 10B is a state where the stopper is rotated upward, and FIG. Shows a state in which the stopper and the trigger are unlatched and the stopper is pushed down, and (d) shows a state in which the stopper is hooked on the lid portion attached to the body of the pump dispenser. FIG. 11 is an explanatory view showing a pump dispenser with a trigger (piston left-right movement type) according to a second embodiment of the present invention, FIG. 11 (a) is a front view, FIG. 11 (b) is a plan view, and FIG. 11 (c) is a side view. FIG. 12 is an explanatory view showing a stopper structure of a conventional pump dispenser with a trigger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pump dispenser 2 Cap 3 Introduction hose 4 Cover member 4a Body part 4a1 Projection part 4b Hinge part 4c Trigger 4c1, 4c2 Projection part 4c1a Repression piece 4c3 Receiving hole 4d Hook 4e Stopper 4e1 Base part 4e2 Lower crotch piece 4e2 5 Nozzle 5a Nozzle cap 6 Trigger 7 Stopper 8 Cylinder 100 Pump dispenser 101 Cap 102 Cover member 102a Body portion 102b Hinge portion 102c Trigger 102d Stopper P Piston

Claims (8)

A pump dispenser with a trigger structured to prevent the movement of the trigger with a stopper,
The base of the stopper is hinged to the body of the dispenser,
The tip of the stopper is hooked to the trigger while being biased downward,
A pump dispenser with a trigger, wherein the latch is released by moving the trigger.   2. The pump dispenser with a trigger according to claim 1, wherein the tip of the stopper is hooked on the trigger in a state of being biased downward by a pressure piece protruding from the trigger.   A receiving hole is formed in the trigger, and a bifurcated tip portion of a stopper is hooked on an inner wall of the receiving hole in a state of being biased downward by an upper crotch piece. Item 2. A pump dispenser with a trigger according to item 1.   When the tip of the trigger is rotated in the direction to unlock the stopper, the lower crotch piece of the bifurcated tip is detached from the inner wall of the receiving hole of the trigger, and the upper crotch piece The pump dispenser with a trigger according to claim 3, wherein the stopper is forcibly pushed down by the elastic pressure.   The stopper is engaged with a protrusion projecting from the dispenser body while the stopper is positioned vertically (along a cap attached to the body of the dispenser). The pump dispenser with a trigger according to claim 1.   The pump dispenser with a trigger according to claim 1, wherein a receiving hole is formed in the trigger, and an inner wall of the receiving hole and a tip of a lower stopper are locked.   The pump dispenser with a trigger according to any one of claims 1 to 6, wherein the pump dispenser with a trigger is a piston vertical movement type. The pump dispenser with a trigger according to any one of claims 1 to 6, wherein the pump dispenser with a trigger is a piston left-right movement type.

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