JPH07308610A - Mounting of pump dispenser and pump dispenser - Google Patents

Abstract

PURPOSE:To make it possible to mount a pump dispenser on a container rapidly. CONSTITUTION:A pump dispenser 10 is squeezed into a container 20 from right above the mouth part 21 of the container. Next, a hook 72a at the lower end of paired vice pieces 72 is engaged with a flange 70 on the mouth part of the container by the expansion of a connecting piece 74 subsequent to an elastic deformation and the return of the piece to its original position. After that, a stopper 76 is thrust into a space between operating parts 72 at the upper end of the vice piece, so that the stopper is present in between and held there to prevent the hook of the vice piece from being expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump dispenser which sucks and pressurizes liquid in a container into a cylinder by reciprocating motion of a piston which is interlocked with swinging of a trigger.
And a pump dispenser thereof.

[0002]

2. Description of the Related Art In recent years, a pump dispenser, which pressurizes and discharges liquid by reciprocating movement of a piston interlocked with the swing of a trigger without using CFC, has attracted particular attention in recent years due to environmental problems such as destruction of the ozone layer by CFC. ing.

This type of pump dispenser is a liquid dispenser.
Equipped with a piston that interlocks with a trigger that can be pulled (swing) freely against the biasing force of the spring, and sucks and pressurizes the liquid under the reciprocating motion of the piston in the cylinder that communicates with the liquid flow path. It is configured to flow out from an orifice at the tip of the nozzle that is continuous with the flow path.

[0004] Such a pump dispenser is usually sold not to consumers but to detergent companies. And
A detergent dispenser or the like attaches a pump dispenser to a container filled with liquid such as detergent, shampoo, and disinfectant, and the combination of the pump dispenser and the container filled with liquid is used as a product for consumers. It is sold.

The pump dispenser is usually attached to the mouth of the container containing the liquid to be discharged via a bottle cap.

[0006]

By the way, in such a pump dispenser, a female thread is usually formed on the bottle cap. Then, the pump dispenser is attached to the container by screwing a female screw onto a corresponding external thread formed in advance on the container mouth, that is, by screwing a bottle cap onto the container mouth.

That is, the pump dispenser is a container,
By rotating one of the bottle caps relative to the other, it can be attached to the container.

[0008] The pump dispenser is manufactured with the bottle cap incorporated, and is sold to detergent companies. And on the filling line that fills the container with liquid,
The pump dispenser is attached to the container by the process of rotating the bottle cap with respect to the fixed container.

However, when the pump dispenser is attached to the container, since the bottle cap is rotated while fixing the container, the speed (filling speed) in the step of filling the liquid into the container is The speed (mounting speed) in the step of mounting the dispenser on the container becomes very slow. Therefore, the speed of the filling line becomes slow according to the mounting speed, and the mounting process is an obstacle to speeding up the filling line.

Further, since the mechanism for rotating the bottle cap while fixing the container is likely to be complicated, the filling line becomes structurally complex and large in size.

An object of the present invention is to provide a mounting method and a pump dispenser which enable mounting of a pump dispenser on a container at high speed.

[0012]

In order to achieve this object, according to the present invention, by pushing without screwing,
A pump dispenser can be attached to the container.

According to the pump dispenser mounting method of the present invention, the bottle cap is pushed into the container mouth by aligning the fitting recess of the bottle cap with the rotation preventing projection provided at the container mouth. Then, the pair of vice piece hooks located on the side of the bottle cap are engaged with the flange of the container opening portion under the expansion and return to the initial position due to the elastic deformation of the connecting piece, and then, A stopper is interposed and held between the upper ends of the vice pieces, which serve as the operating portion, while being pressed to prevent the lower ends of the vice pieces from expanding.

[0014]

According to the mounting method of the present invention, the pump dispenser can be mounted and fixed to the container opening by simply pushing the pump dispenser from above, so that the mounting work of the pump dispenser can be performed quickly and easily. The wearing speed of is increased.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

As shown in FIGS. 1, 2 and 3, a pump dispenser 10 according to the present invention includes a valve housing 12 having a defined flow passage, a cylinder 14 communicating with the flow passage of the valve housing, and a cylinder. It is equipped with a piston 16 slidably provided therein and a bottle cap 18 connected and fixed to the lower end of the valve housing, and can be attached to the mouth portion 21 of the container 20 via the bottle cap. . The piston 16 is linked to the trigger -24 so that the container can move under the sliding movement of the piston linked to the operation of the trigger.
The pump dispenser 10 is configured so that a liquid such as a detergent contained in 20 is caused to flow out from the nozzle 26.

The components of the pump dispenser 10, such as the valve housing 12, the cylinder 14, the piston 16, the bottle cap 18, the trigger 24, etc., are all molded from plastic. Also, pump dispenser-10
The container 20 in which is mounted is also usually molded from plastic.

As can be seen from FIG. 1, the valve housing 12 is formed into a substantially L shape from a vertical portion 12a and a horizontal portion 12b, and a liquid inflow passage 28 and an outflow passage 30 are defined in the vertical portion and the horizontal portion, respectively. Has been done. Then, the cylinder 14 is
At a position below 12b, the cylinder is integrally formed with the vertical portion 12a, the inside of the cylinder is communicated with the inflow passage 28 of the vertical portion through the flow path 32, and the liquid generated by the sliding of the piston 16 in the cylinder is A primary valve 34 for controlling the flow is arranged in the inflow passage (see FIG. 2).

Further, as shown in FIGS. 1 and 2, the nozzle 26
Is attached to the tip of the horizontal part 12b of the valve housing,
A secondary valve 36 that controls the outflow of the liquid from the outflow passage 30 is provided in the nozzle, for example, with the end of the horizontal portion as a valve seat.

As can be seen from FIGS. 1 and 2,
A nozzle cap 40 having an orifice 38 serving as a liquid outlet is attached to the tip of the nozzle 26.

As can be seen from FIG. 3 in addition to FIGS. 1 and 2, the bottle cap 18 is formed integrally with, for example, a fitting cylinder 18a protruding upward, and is formed in a vertical portion of the valve housing. The bottle cap is connected to the valve housing 12 from below while the fitting cylinder is fitted and fixed in the 12a. The bottle cap 18 has, for example, a corresponding tubular piece 18b that can be fitted into the tubular piece 42 on the lower surface of the cylinder 14.
It is formed integrally with the upper surface adjacent to 18a, and is a fitting pipe 18a for the bottle cap to the vertical portion 12a of the valve housing.
These tubular pieces can be fitted to each other with the fitting.

In such a structure, since the tubular pieces 18b juxtaposed to the fitting tube 18a function as rotation stoppers, the bottle cap 18 is non-rotatably connected to the valve housing 12.

As shown in FIG. 1, the upper end of the fitting cylinder 18a of the bottle cap serves as the valve seat of the primary valve 34, and the primary valve is brought into close contact with and separated from the valve seat, and the inflow passage 28 is passed through. The flow of liquid to the cylinder 14 is controlled.

Further, as shown in FIG. 2, the trigger-24 is
For example, the protrusion 26a of the nozzle 26 is engaged with the engagement hole 24a at the upper end, so that the nozzle 26, that is, the valve housing 12 is swingably connected. As shown in FIGS. 1 and 2, the piston 16 is formed with a substantially spherical joint 16a at the tip of the piston rod, and the engagement recess of the trigger-24 is formed.
The engagement of the joint with 24b connects the trigger and the piston in an interlockable manner.

The trigger 24 is biased and pressed in the initial position direction, that is, outward (to the left in the figure) under the biasing force of the return spring 44. As shown in FIG. 1 and FIG.
The spring 44 is, for example, molded from plastic in a bellows shape that is curved at two places, and inserts the right end support piece 44a between the horizontal portion 12b of the valve housing and the cylinder 14.
Further, by engaging the support piece 44b at the left end with the receiving portion 24c of the trigger, it is laid and stretched between the valve housing 12 and the trigger-24.

The return spring 44 is formed to have a hollow portion 44c that serves as an escape for the cylinder 14 and the piston 16.

By the way, in a known return spring having one bending portion, the angle of the movable side (trigger-side) support piece is usually the swing angle of the trigger with respect to the fixed-side support piece. Fluctuates according to. In this case, since the root part of the movable side support piece mainly tries to be bent and deformed, it is necessary to reinforce the part and the movable side support piece needs to be firmly connected to the trigger. . Therefore, in the known return spring, the supporting piece of the return spring, the receiving portion of the trigger, and the like tend to increase in size.

However, as in the embodiment, this return spring 44 having two curved portions is expanded and contracted under the elastic deformation of both of the two curved portions, so that the return spring The support piece 44b, which is a movable end, moves substantially in parallel on the horizontal line. In other words, the bending deformation does not occur at the root portion of the return spring support piece 44b, the reinforcement of the portion is unnecessary, and the detachment can be prevented even if the trigger side is not firmly connected. , The return spring 44, the trigger 24, etc. can be downsized.

Since the stress acting on the bending portion at the time of expansion and contraction is distributed to the two bending portions, the stress burden on each bending portion is halved. Therefore, even under repeated elastic deformation during expansion and contraction, deterioration of the curved portion can be sufficiently suppressed, and the life of the return spring 44 can be extended.

Then, as shown in FIGS. 1 and 2, the valve housing 12 and the bottle cap 1 assembled in this manner.
The pump dispenser 10 is formed by covering the nozzle 26 and the nozzle 26 with the cover 46 and fixing the cover to these constituent members.

Here, in addition to FIG. 1, FIG. 4, FIG. 5 (A), and (B)
As can be seen from the above, in the present invention, the valve housing 12 is formed by integrally having the protruding piece 48 with the vertical portion 12a, and a pair of holding pieces capable of holding the protruding piece.
50 hangs from the top of the cover 46. And a pair of holding pieces capable of further holding the cover holding piece 50 from the outside.
52 is erected on the bottle cap 18, and the cover 46 is irremovably connected and fixed to the valve housing 12, the bottle cap and the like by sandwiching the retaining piece between the projecting piece 48 and the sandwiching piece.

For example, as shown in FIGS. 4 and 5 (B),
The cover holding piece 50 is formed with a hook 50a at the lower end that can be engaged with the lower surface of the projecting piece 48, and the insertion of the holding piece can be guaranteed while accompanied by a slight expansion deformation due to elasticity. In addition, the bottle cap holding piece 52 is formed.

In such a structure, the holding piece 50 holding the protruding piece 48 is further held by the holding piece 52 to prevent the holding piece from expanding relative to the protruding piece. The cover 46 is reliably prevented from separating from the bottle cap 12 and the like.

In order to facilitate the insertion of the protruding piece 48 between the pair of holding pieces 50, for example, as shown in FIG. 5B, a taper which serves as a guide for expanding the hook 50a. A surface may be provided on the upper end of the protruding piece. Further, in order to facilitate insertion of the holding piece 50 between the pair of holding pieces 52, for example, the inner surface of the upper end of the holding piece may be a reverse taper surface.

Here, as can be seen from FIGS. 1 and 4, the protruding piece 48 of the valve housing is formed in a partially hollow shape that is open in the horizontal direction. However, the protruding piece 48 can be interposed between the pair of holding pieces 50 of the cover, and
The shape is not limited to a hollow shape, as long as the hook 50a of the holding piece can be engaged with the hook 50a. For example, the protruding piece may be solid.

However, the protruding piece of the valve housing
Even if 48 is a hollow shape, hug by the cover holding piece 50,
Further, further clamping from the outside of the holding piece by the holding piece 52 of the bottle cap can be performed without any trouble, and unnecessary portions are lightened to reduce the weight of the valve housing 12.

By the way, in such a pump dispenser 10, the valve housing 12 and the bottle cap 1
8, the cover 46 and the like are fitted by pressing in the vertical direction. Here, when the bottle cap 18 and the cover 46 are pushed into the valve housing 12 almost at the same time, the holding piece 52 of the bottle cap hinders the expansion of the holding piece 50 of the cover. There is a risk that the protruding piece of the valve housing cannot be inserted between the pieces, that is, the protruding piece 48 cannot be held by the holding piece.

Therefore, in the present invention, for example, the insertion of the bottle cap fitting cylinder 18a into the vertical portion 12a of the valve housing can be temporarily interrupted midway.

As can be seen from FIGS. 1 and 4, in this pump dispenser 10, for example, a pair of ring-shaped ribs 54-1 and 54-2 are provided in the bottle cap fitting cylinder 18.
Along the outer peripheral surface of a, it is provided at two positions above and below, and corresponding recesses 56-1 and 56-2 for engaging with the ribs are provided at corresponding positions on the inner surface of the vertical portion 12a of the valve housing. Then, the fitting of the bottle cap fitting cylinder 18a into the vertical portion 12a of the valve housing causes the ribs 56-1 and 54-2 to engage with the recesses 56-1 and 54-2, respectively. Caps 18 can be connected and fixed.

In this structure, when the fitting cylinder 18a is inserted into the vertical portion 12a, as shown in FIG. 6A, first, the upper rib 54-1 and the lower recess 56-2 are formed. Under the engagement, the pushing of the bottle cap 18 against the valve housing 12 is once interrupted. As can be seen from FIG. 6 (B), in this pushing-in interruption state, since the holding piece 52 of the bottle cap does not reach the position where the protruding piece 48 of the valve housing is laterally covered, the cover for the valve housing 18 is covered. 46 can be pushed in.

After the hook 50a of the holding piece is engaged with the lower surface of the protruding piece 48 to connect the valve housing 12 and the cover 46, the upper and lower ribs 54-1 and 54-2 are corresponding recesses. 56-
Valve housing, until it engages 1, 56-2 respectively
When the bottle cap 18 is pushed further into the cover, the holding piece 50 is sandwiched between the pair of holding pieces 52 as shown in FIGS. 5 (A) and 5 (B).
Are interposed and pinched, and the bottle cap is connected and fixed to the valve housing and the cover.

According to such a structure, the pushing piece is carried out step by step so that the holding piece 50 holds the protruding piece 48, and
Since the holding piece 50 can be properly held by the holding piece 52, the work is not complicated.

Although the rib and the recess are provided at two places respectively in this embodiment, the pushing of the bottle cap 18 into the valve housing 12 can be temporarily interrupted by the stepwise engagement of the upper rib with the recess. However, the number of ribs and recesses is not limited to this. That is, the number of ribs and recesses is not limited to two as long as there are a plurality of ribs and recesses. For example, the ribs and recesses may be provided at three positions separated vertically. Further, for example, a rib may be provided at one place corresponding to the upper rib 54-1 of the embodiment with respect to two recesses.

In the embodiment, ribs 54-1 and 54-2 are provided.
On the outer peripheral surface of the fitting tube 18a of the bottle cap,
6-2 are provided on the inner surface of the vertical portion 12a of the valve housing, respectively, on the contrary, ribs may be provided on the inner surface of the vertical portion of the valve housing, and recesses may be provided on the outer peripheral surface of the fitting cylinder of the bottle cap. Good.

As can be seen from FIGS. 1 and 3, the suction tube 58 is extended downward from the bottle cap 18 to the container 20 by fitting the upper end into the fitting cylinder 18a. The pump dispenser 10 can be attached to the container by connecting the bottle cap to the container opening 21 with the insertion of the suction tube.

By the way, as shown in FIGS.
In such a pump dispenser-10, normally,
Ventilation holes 62 and 63, which are communicated with each other, for example, through a hollow portion 60 defined between them, are provided in both the tubular pieces 42 and 18b, respectively. In such a configuration, the hollow portion 60, the ventilation hole
The outside air can flow into the container 20 via the valves 62 and 63, so that negative pressure in the container due to reciprocating movement of the piston 16 is prevented.

As can be seen by looking at FIG. 7 in addition to FIG. 1, in the present invention, the detents 66 extending in the vertical direction are formed on the container mouth 21 and the detents of the detents are loosened. A fitting recess 68 that can be fitted is provided continuously to the lower open end of the bottle cap 18.

In such a structure, the bottle cap 18 is fitted into the container 20 by the engagement between the rotation preventing projection 66 and the fitting recess 68.
It is attached non-rotatably to.

As can be seen from FIGS. 2, 3 and 8, in the present invention, for example, a pair of flanges 70 separated by 180 ° are projected from the container mouth 21 in the horizontal direction. , 72a that can be engaged with the flange
The vise piece 72 having the above is formed integrally with the valve housing 12 via the connecting piece 74.

The vise piece 72 is formed with the hook 72a at the lower end and the operating portion 72b at the upper end, respectively, and by pushing the operating portion at the upper end in the direction of the arrow in FIG. It is formed to widen between the hooks at the lower end. The operating portion 72b of the vise piece is disposed so as to be exposed from the window 46a of the cover 46 (see FIG. 2).

Here, as shown in FIGS. 1, 2 and 8, a stopper 76 interposed between the operating portions 72b of the vise pieces.
However, for example, it is integrally formed with the cover 46 so that the upper surface of the cover window 46a can be closed. The stopper 76 is formed so as to be swingable between an open position and a closed position with a thin portion serving as a hinge 76a.
It is possible to intervene between 72b.

The reference numeral 76b in the drawing indicates a vice piece 72.
The guard piece hangs from the stopper 76 so as to be engageable therewith.

Further, the stopper 76 can be held and fixed in the closed position by a predetermined removable hook (not shown) or the like.

In such a structure, as shown by the solid line in FIG. 1 and FIG. 8, when the stopper 76 is held in the closed position and is interposed between the operating portions 72b at the upper ends of the vise pieces, the operating portion inwardly moves. The stopper prevents the pushing operation, that is, the opening of the hook 72a at the lower end. However, as shown in the alternate long and short dash line in FIG. 1 and in FIG.
When swinging around 76a and opening it, and pushing in the operating part 72b of the vise piece, the hook 72a of the vise piece is expanded and the engagement with the flange 70 is released, and the bottle from the container 20 is released. It is possible to remove the cap 18, that is, the pump dispenser 10.

Such a pump dispenser 10 is delivered and sold to a detergent company or the like with the stopper 76 opened, that is, the vice piece 72 can swing. A detergent company or the like attaches such a pump dispenser 10 to a container at a filling line for filling the container 20 with liquid. That is, in the filling line, the filling process of filling the container 20 with the liquid and the mounting process of mounting the pump dispenser 10 on the container are continuously set.

Then, when the container 20 filled with the liquid is conveyed to a position right below the mounting mechanism of the pump dispenser 10 by a conveying device such as a belt conveyor, the container is stopped and mounted by the temporary stop of the conveying device. The pump dispenser 10 is supplied from the mechanism, lowered, and pushed into the container. At this time, the container is stopped by aligning the anti-rotation protrusion 66 with the fitting recess 68 of the bottle cap.

The pump dispenser 10 freely descends until it reaches a specific pushing limit position of the bottle cap 18 with respect to the container mouth portion 21, and when the inner upper surface of the bottle cap comes into contact with the upper surface of the mouth portion or the like. Then, when the pushing is restricted, the pump dispenser remains attached to the container mouth.

At this time, by pushing the pump dispenser 10 into the container mouth 21, the hook at the lower end of the vise piece is pushed.
When 72a passes while expanding along the upper taper surface of the flange 70, the vise piece returns to the initial position under the restoring force that opposes the elastic deformation of the connecting piece 74, so that the hook is attached to the flange. Are engaged with each other.

After the engagement between the hook 72a of the vise piece and the flange 70 of the container mouth, as shown by the solid line in FIG. 1 and FIG. 8, the stopper 76 of the cover is swung to the closed position to move the hook. If the expansion is prevented, the process of mounting the pump dispenser 10 on the container 20 is completed.

As described above, the pump dispenser 10 is lowered until the large resistance force at the pushing limit position of the bottle cap 18 with respect to the container opening 21 is detected.
If pushed into the container 20, the pump dispenser will be engaged under the engagement of the hook 72a of the vise piece and the flange 70 of the container opening.
Is automatically attached to the container. And the cover
Since the stopper 76 is closed to prevent the hook 72a of the vise piece from expanding, the bottle cap 18, that is, the pump dispenser 10 is firmly attached to the container opening 21.

That is, according to the present invention, it is sufficient to push the pump dispenser 10 from above the container 20 with a predetermined force.
Since the pump dispenser 10 is pushed right above the container 20, fixing of the container can be omitted, and it is not necessary to screw the bottle cap under rotation as in the conventional case.

According to the present invention, the pump dispenser 10 can be quickly attached to the container 20 as compared with the conventional attaching method of rotating the bottle cap while fixing the container. Therefore, the pump dispenser is attached to the container. The speed (mounting speed) is surely increased. For example, the mounting speed can be increased to almost the same speed as the speed (filling speed) in the step of filling the container with the liquid.

Therefore, by making the mounting speed of the pump dispenser 10 correspond to the filling speed, the mounting process of the pump dispenser does not hinder the filling line and the speed at the filling line can be increased.

Further, since the pump dispenser 10 may be lowered and pushed from directly above the container 20, the mechanism for mounting the pump dispenser is structurally simplified, and the filling line is structurally simplified and small in size. Be converted.

The pump dispenser of the present invention
According to 10, the above mounting method can be properly performed, and the container 20
The mounting speed can be easily increased.

Since the pump dispenser 10 is assembled by pushing the valve housing 12, the cover 46 and the bottle cap 18 into each other, the pump dispenser can be assembled quickly and easily.

By the way, in the conventional pump dispenser, the constituent members of the pump dispenser excluding the cover are
It is difficult to unitize. Therefore, a pump dispenser with a custom-designed cover that meets the requirements of a detergent supplier who purchases the pump dispenser is inevitably expensive. Therefore, it is difficult for a pump dispenser manufacturer to meet the requirements of a custom design, and the same model is produced as a mass-produced product, and a detergent manufacturer purchases the mass-produced pump dispenser and installs it in the cover. -By attaching a label, label, etc.,
Differentiate from others.

On the other hand, in the pump dispenser 10 of the present invention, the constituent parts of the pump dispenser 10 excluding the cover 46 can be unitized as described above. And the pump dispenser 10 excluding the cover 46
If this unit assembly is a mass-produced product and the unit assembly is covered with a custom-designed cover that meets the requirements of detergent manufacturers, a pump dispenser with the same function but a different cover design can be easily obtained. .

Therefore, at the producer level of the pump dispenser 10, it is possible to fully meet the requirements of custom design,
The cost of a custom designed pump dispenser can be reduced.

A pump dispenser attached to the container 20
In FIG. 10, as shown in FIG. 9, when the operating portion 72b is pushed after swinging and opening the stopper 76, the hook 72a at the lower end of the vice piece separates from the flange 70 at the container mouth portion, so The pump dispenser 10 can be removed. That is, the pump dispenser 10 can be easily attached to and removed from the container 20 even at the level of the consumer who purchased the product consisting of the combination of the container and the pump dispenser, so that the contents of the container can be easily refilled by the consumer. You can do it.

Here, when the vise piece 72 swings in the expanding direction of the hook 72a, as shown in FIG. 9, the side wall 46b of the cover adjacent to the vise piece expands together with the vise piece. To be done. In such a pump dispenser 10, since the front surface of the cover is generally notched so that the side wall 46b of the cover can be elastically deformed in the expanding direction, the side wall of the cover is a vice piece. It does not hinder the expansion.

However, as shown in FIG. 10, if the vertical wall 78 at the rear of the cover 46 is provided with, for example, a vertical slit 80, not only the front but also the rear is opened, so that the cover is opened.
The expansion of the side wall 46b, that is, the expansion of the vice piece 72 occurs more easily.

In other words, when the pump dispenser 10 is removed from the container 20, a large operation force is not required, so that even a weak woman or an elderly person can easily remove and install the pump dispenser. You can do it.

Further, not limited to the slit 80, for example, an expandable bellows 82 having a cross-sectional shape as shown in FIG. 11 (B) is used as shown in FIG. 11 (A). May be provided by extending in the vertical direction. In such a structure, when the side wall 46b of the cover is expanded together with the vise piece 72, the bellows 82 of the vertical wall 78 expands to the side while elastically deforming. Sufficient expansion of the side wall is sufficiently obtained.

In the structure in which the bellows 82 is provided on the vertical wall 78 of the cover, the expanded side wall 46b is returned to the initial position due to the restoring force of the bellows, so that the cover is aged with time.
The shape change of 46 can be prevented. Further, the interposition of the bellows 82 ensures that the vertical wall 78 has a closed cross-sectional shape and has a good external appearance in which the interior is not exposed.

Here, in the embodiment, the stopper 76 is
Although it is formed in a lid shape integral with the cover 46, it is sufficient as long as it can be interposed and engaged between the operation portions 72b of the vise piece, and is not limited to this. For example, a stopper separate from the cover 46 may be detachably provided between the operating portions 72b of the vise pieces.

However, if the stopper 76 is formed integrally with the cover 46, there is no risk of losing the stopper.

Further, in the embodiment, the rotation preventing projection 66 provided on the container mouth portion 21 is inserted and fitted into the fitting concave portion 68 of the bottle cap. But the bottle cap for container 20
18, that is, it is sufficient to prevent the rotation of the pump dispenser 10, and the present invention is not limited to this.For example, conversely to this, the bottle cap is provided with the anti-rotation protrusion 66 and the container mouth portion 21 is fitted. A mating recess 68 may be provided.

The above-mentioned embodiments are for explaining the present invention and do not limit the present invention in any way.
It goes without saying that the present invention includes all those which are modified or modified within the technical scope of the present invention.

[0080]

As described above, according to the method of mounting the pump dispenser of the present invention, it is sufficient to push the pump dispenser from above the container with a predetermined force, and the screwing work of the bottle cap or the like is unnecessary. Therefore, the mounting speed of the pump dispenser on the container is increased. Therefore, the mounting speed of the pump dispenser can be easily matched to the filling speed, the mounting process of the pump dispenser does not hinder the filling line, and the speed of the filling line can be increased.

Further, since it is only necessary to lower and push the pump dispenser directly above the container, the mechanism for mounting the pump dispenser is structurally simplified, and the filling line is structurally simplified and miniaturized. It

The pump dispenser of the present invention
According to the above, the above-mentioned mounting method can be appropriately performed, and the mounting speed to the container can be easily increased.

Since the pump dispenser is assembled by pushing the valve housing, the cover and the bottle cap into each other, the pump dispenser
The assembly work can be done quickly and easily.

Further, if the protruding piece of the valve housing is formed in a hollow shape, unnecessary portions can be thinned and the valve housing can be reduced in weight.

Further, if the vertical wall of the cover is provided with slits, bellows, etc. extending in the up-down direction, the expansion associated with the vise piece can be easily obtained, and the operability of the vise piece is improved.

If the vertical wall of the cover is provided with bellows, the vertical wall has a closed cross section, so that the restoring force of the side wall can be accurately obtained and good appearance quality can be secured.

Further, if the return spring is formed in a substantially bellows side surface shape having two curved portions, the movable portion of the support portion can be moved in parallel, so that the base portion of the support portion is reinforced and the trigger is triggered. -No need for strong connection on the side,
The return spring and the trigger can be downsized.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a pump dispenser according to the present invention.

FIG. 2 is an exploded perspective view of the pump dispenser above the valve housing.

FIG. 3 is an exploded perspective view of the pump dispenser below the bottle cap.

FIG. 4 is an exploded perspective view of the cover, the valve housing, and the bottle cap, partially cut away, as viewed from the rear.

FIG. 5 is a side view and a rear view of the pump dispenser after assembly, which is partially broken away.

FIG. 6 is a side view and a rear view of the pump dispenser, which is partially cut away, before assembly.

FIG. 7 is an exploded perspective view of a container and a bottle cap before being attached to the container.

8 is a line A- in FIG. 1 in the engaged state of the hook of the vise.
It is a schematic longitudinal cross-sectional view of the pump dispenser along A.

9 is a schematic longitudinal sectional view of a pump dispenser similar to FIG. 8 with the hook of the vise disengaged.

FIG. 10 is a partially cutaway perspective view of the cover showing a modified example of the pump dispenser of the present invention.

FIG. 11 is a partially cutaway perspective view of the cover and a partially enlarged sectional view taken along the line BB, showing a modified example of the pump dispenser of the present invention.

[Explanation of symbols]

 10 Pump dispenser 12 Valve housing 18 Bottle cap 20 Container 21 Container mouth 44 Return spring 46 Cover 48 Valve housing protruding piece 50 Cover holding piece 50a Holding piece hook 52 Bottle cap holding piece 54 -1, 54-2 Ribs 56-1, 56-2 Recesses 66 Anti-rotation protrusion 68 Fitting recess 70 Flange 72 Vise piece 72a Vise piece hook 72b Vise piece operation part 74 Connecting piece 76 Stopper 76a Stopper hinge 78 Cover − (Rear) vertical wall 80 slits 82 Bellows

Claims (12)

[Claims] 1. A pump dispenser that sucks and pressurizes liquid in a container into a cylinder by a reciprocating motion of a piston that is interlocked with swinging of a trigger and discharges the liquid is attached to a container mouth through a bottle cap. In the method of mounting the pump dispenser, align the fitting recesses of the bottle cap with the detent protrusions provided on the container mouth, push the bottle cap into the container mouth, and press the bottom ends of the pair of vice pieces located on the sides of the bottle cap. The hook engages with the flange of the container mouth under the expansion and return to the initial position due to the elastic deformation of the connecting piece, and then the stopper is pushed between the upper ends of the vice pieces that serve as the operating section. A pump dispenser mounting method in which the bottom end of the vise piece is prevented from expanding by being intervened and held by. 2. A pump dispenser for sucking and pressurizing the liquid in the container into the cylinder and outflowing it by reciprocating the piston in conjunction with the swing of the trigger is attached to the container mouth through the bottle cap. In the pump dispenser-attaching method, in the filling line for filling the liquid in the container, after filling the liquid,
Align the fitting recesses of the bottle cap with the anti-rotation protrusions on the container mouth, push the bottle cap into the container mouth, and use the hooks at the bottom of the pair of vise pieces located on the sides of the bottle cap to elastically deform the connecting piece. Under the accompanying expansion and return to the initial position, it is engaged with the flange of the container opening, and then between the operating parts of the upper ends of the pair of vise pieces exposed to the outside through the window of the cover, the cover is inserted. A pump dispenser mounting method that prevents the vice piece bottom end from expanding by interposing and holding an integral stopper with the stopper. 3. The liquid in the container is formed into a desired external shape under the covering of the cover, is attached to the container mouth through a bottle cap, and is reciprocally moved by a piston linked with the swing of the trigger. In the pump dispenser that sucks up and pressurizes into the cylinder and flows out from the orifice of the nozzle at the tip of the outflow passage, the fitting recess into which the whirl-stop protrusion provided at the container mouth can be loosely fitted is the opening end of the bottle cap. And a pair of vise pieces, each of which has a hook at its lower end that can be engaged with the flange of the container mouth, extends in the vertical direction at the position sandwiching the bottle cap, and serves as an operating part. The upper end of one piece is exposed to the outside through the window of the cover, and a stopper that can be interposed and held between the upper ends of the vice pieces when pressed is formed integrally with the cover through a thin portion serving as a hinge. By pushing from the top of the container, the hook of the vise piece engages with the flange of the container mouth, and after the engagement, it can be attached to the container mouth by interposing and holding the stopper between the upper ends of the vise pieces. A pump dispenser characterized by the above. 4. A valve housing having a substantially L-shaped vertical portion and a horizontal portion which define a liquid inflow passage and a liquid outflow passage, respectively, and a cylinder integrally connected to the inflow passage in the vertical portion; A pair of vise pieces that are formed with a protruding hook at the lower end and that are sandwiched by the vertical portion and that are integrally formed with the valve housing via an elastically deformable connecting piece; the vertical portion of the valve housing Valve for controlling the flow of liquid to the cylinder by being disposed in the inflow passage of the valve, and a secondary valve disposed in the outflow passage of the horizontal portion of the valve housing for controlling the flow of liquid from the cylinder; A trigger that is swingably connected to the housing; a piston that is slidably arranged in the cylinder and that is linked to the trigger; and a valve having an orifice that serves as an outlet. Nozzle and attached to a horizontal tip of Ujingu; trigger -, provided between the valve housing, a trigger - Rita biasing to its initial position direction -
A spring and at least a fitting cylinder to be fitted into and fixed to the vertical portion of the valve housing from below is provided on the upper surface, and an engagement recess into which the rotation-stopping projection of the container mouth can be loosely fitted is continuously provided at the lower opening end. A bottle cap and a window that exposes the operating portion at the upper end of the vise piece to the outside, and a lid-shaped stopper that can be held and held between the upper ends of the vise pieces, and a front face that can cover the valve housing and bottle cap, A pump dispenser having a cover with an open bottom end; 5. The container is formed into a desired external shape under the covering of a cover, is attached to the container mouth through a bottle cap, and is reciprocally moved by a piston that is interlocked with the swinging motion of a trigger. In a pump dispenser that sucks up and pressurizes liquid into a cylinder and flows out from an orifice of a nozzle at the tip of an outflow passage, a protruding piece is horizontally projected from a vertical piece of a valve housing in which an inflow passage is defined. A pair of hugging pieces capable of holding the projecting piece has a hook engageable with the lower surface of the projecting piece at the lower end,
A pair of holding pieces that hang down inside the cover and that can hold the holding piece after holding the protruding piece partially in the vertical direction are projected on the bottle cap, and By holding the holding piece by the holding piece of the bottle cap after holding the protruding piece of the valve housing, at least the valve housing,
A pump dispenser characterized by being fixed to a bottle cap. 6. A valve housing having a substantially L-shaped vertical portion and a horizontal portion which define a liquid inflow passage and a liquid outflow passage, respectively, and a cylinder integrally connected to the inflow passage in the vertical portion; A pair of vise pieces formed with a protruding hook at the lower end and integrally formed with the valve housing via elastically deformable connecting pieces at positions sandwiching the vertical portion; A primary valve disposed in the inflow passage to control the flow of liquid to the cylinder, and a secondary valve disposed in the outflow passage of the horizontal part to control the flow of liquid from the cylinder; A trigger that is swingably connected; a piston that is slidably disposed in the cylinder and that is linked to the trigger; a horizontal portion of the valve housing that has an orifice that serves as an outlet. Destination A nozzle attached to the trigger; a return spring that is provided between the trigger and the valve housing and biases the trigger in the direction of its initial position; and a fitting tube that is fitted into and fixed to the vertical portion of the valve housing from below. A bottle cap which is provided at least on the upper surface and which has an engaging recessed portion, which is loosely fittable with the rotation-stopping projection of the container mouth, continuous with the lower opening end; The vise piece has a lid-shaped stopper that can be held and held between the upper ends of the vise piece, and has a valve housing, a front surface that can cover the bottle cap, and a cover that is open at the lower end; and a vertical piece of the valve housing. A projection piece horizontally projecting from the cover; a hook engageable with the lower surface of the projection piece at the lower end, so that the projection piece of the valve housing can be held. A pair of holding pieces hung on the bottle cap; and a pair of holding pieces provided on the bottle cap for vertically holding the end of the holding piece after holding the projecting piece. Characteristic pump dispenser. 7. The pump dispenser according to claim 5, wherein the protruding piece of the valve housing is formed in a hollow shape that is opened in the horizontal direction. 8. At least two ribs vertically spaced apart are provided on either the peripheral edge of the fitting cylinder of the bottle cap or the inner surface of the vertical portion of the valve housing,
Corresponding recesses for the ribs are formed on the other side, and the protrusion of the valve housing occurs when the upper ribs and the lower recesses are engaged with each other when the fitting cap of the bottle cap is inserted into the vertical portion of the valve housing. Hold the piece with the cover holding piece, and then by the engagement between the upper and lower ribs and recesses,
8. The pump dispenser according to claim 3, wherein the lower end of the holding piece of the cover can be held by the holding piece of the bottle cap. 9. The pump dispenser according to claim 8, wherein the same number of ribs and recesses are provided in the fitting cylinder of the bottle cap and the vertical portion of the valve housing, respectively. 10. The pump dispenser according to claim 3, wherein a slit extending in the vertical direction is formed on the rear vertical wall of the cover. 11. The pump dispenser according to claim 3, wherein a bellows which is expandable and contractible in a side wall direction of the cover is formed to extend vertically in a rear vertical wall of the cover. 12. The pump dispenser according to claim 3, wherein the return spring is formed in a substantially bellows side surface shape having two curved portions.