JPH07101480A - Pump dispenser and method for mounting the same - Google Patents

Abstract

PURPOSE:To speed up mounting of a pump dispenser by means of screwing a bottle cap onto a male screw of a container mouth. CONSTITUTION:Components except a cover 16 are made into a single unit to be a unit assembly 62, and a pump assembly 10 with the cover 16 lightly put over the unit assembly 62 is pushed into a container 50 from just above the container 50 filled with liquid. A ring 60 is pushed in together with the cover 16, and pushing force is applied to a bottle cap 52 via an engaging protrusion 61 on an inner face of the cover, whereby a lower end of the bottle cap 52 with a slot 54 is elastically deformed to be pushed into a male screw and screwed. If the cover 16 is further pushed in, the engaging protrusion 61 is elastically deformed, so than the ring 60 is fitted on an outer face of the bottle cap. Then the bottle cap can be securely screwed on the container 50 while elastic deformation of the bottle cap is depressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump dispenser for sucking and pressurizing liquid in a container into a cylinder and discharging it by reciprocating movement of a piston which is interlocked with swinging of a trigger. TECHNICAL FIELD The present invention relates to a pump dispenser mounting method and a pump dispenser, which are mounted on a screw by screwing a bottle cap.

[0002]

2. Description of the Related Art Due to the environmental problem of depletion of the ozone layer by chlorofluorocarbon, attention has been paid to a pump dispenser which pressurizes and discharges liquid by reciprocating movement of a piston interlocked with the oscillation of a trigger without using fluorocarbon.

This type of pump dispenser is mounted by a bottle cap on the mouth of a container containing the liquid to be discharged. For example, the trigger is swingably attached to the cover, and the piston reciprocates in the cylinder in association with the pulling of the trigger against the return spring.

Here, except for the pulling force of the trigger, the trigger is returned to its initial position by the return spring,
The piston is also returned to the initial position in conjunction with the movement of the trigger. Then, when the piston is returned from the pushing position to the initial position, the cylinder is negatively pressured.

For example, the cylinder is integrally formed with the cover, and the valve housing is fitted and fixed to the cover. A primary valve that controls the inflow of liquid into the cylinder and a secondary valve that controls the outflow of liquid from the cylinder are respectively provided in the valve housing adjacent to the cylinder, and the cylinder is made negative pressure. Then the primary valve is opened and the secondary valve is closed.

The liquid in the container is sucked up into the cylinder through the suction tube and the primary valve while removing the residual air in the cylinder due to the negative pressure of the cylinder. Then, when the trigger is pulled against the return spring, the piston is pushed in to pressurize the liquid in the cylinder, and the pressurized liquid flows out of the cylinder by opening the secondary valve. The pressurized liquid flows through the outflow passage via the secondary valve and flows out from the orifice of the nozzle attached to the tip of the outflow passage.

A series of operations for sucking up and pressurizing the liquid by swinging the trigger are called pumping action, or pump action for short. The components such as the trigger, the piston, the cylinder, and the valve housing that contribute to the pump action are almost covered with the cover, and the design of the pump dispenser itself is substantially determined by the design of the cover.

The constituent members such as the trigger, the piston, the cylinder, the valve housing, the bottle cap, the suction tube and the cover are all injection molded from plastic.

[0009] Normally, the pump dispenser is sold not to the consumer but to a detergent company or the like. Then, a detergent supplier or the like attaches a dispenser to a container filled with a liquid such as a detergent, a shampoo, and a disinfectant, and is sold to consumers as a combination of a pump dispenser and a container.

[0010]

The pump dispenser is attached to the container by forming a screw on the mouth of the container and screwing a bottle cap onto the male screw. Of course, a female screw is formed on the bottle cap. The pump dispenser is manufactured with the bottle cap incorporated, and is sold to a detergent company or the like. And if you rotate one of the container and bottle cap relative to the other,
The pump dispenser is screwed and attached to the container.

Mounting the pump dispenser on the container
This is performed in a filling line for filling a container with a liquid, and normally, the pump dispenser is attached to the container by rotating the bottle cap while fixing the container.

However, since the bottle cap is rotated while fixing the container, the speed in the process of mounting the dispenser on the container (compared to the speed in the process of filling the container with the liquid (filling speed)) Wearing speed) is very slow. Therefore, the speed of the filling line becomes slow according to the mounting speed, and the mounting process is an obstacle to the filling line.

Further, the mechanism for rotating the bottle cap while fixing the container becomes complicated, and the filling line becomes structurally complicated and large in size.

It is also known that a female screw is formed at the lower end of the cover and the cover is screwed onto the external thread of the container mouth and directly attached. With this configuration that does not use a bottle cap, the number of parts of the pump dispenser is reduced, but the configuration of the cover is complicated.

For example, the cylinder is integrally formed with the cover, the inflow passage and the outflow passage to the cylinder are formed in the cover, the valve seat of the primary valve is in the inflow passage, and the valve of the secondary valve is in the outflow passage. The cover has an inherently complicated structure such as a seat. For this reason, female thread molding, which further complicates the structure of the cover, is not generally adopted.

It is an object of the present invention to provide a method for mounting a pump dispenser on a container, which enables the mounting speed to be increased. Another object of the present invention is to provide a pump dispenser that can be quickly attached to a container.

[0017]

In order to achieve this object, according to the present invention, the cover containing the bottle cap is pushed downward to screw the bottle cap to the mouth of the bottle. There is no need to rotate the cap or fix the container.

For example, a bottle cap, which is elastically deformed in the radial direction by forming a slot at the lower end, is pushed into the mouth portion of the container in conjunction with the pushing of the cover and screwed. Further, the ring is fitted to the outer surface of the bottle cap in conjunction with the pushing of the cover to suppress the elastic deformation of the bottle cap to fix the bottle cap.

Here, the ring is disposed inside the lower end of the cover above the bottle cap so as to be pushed together with the cover, and in the first half of the pushing of the cover, the cover is placed.
The pushing force of is transmitted to the bottle cap, and the bottle cap is pushed into the mouth of the container and forcibly screwed. In the latter half of the pushing of the cover in which the bottle cap is screwed to the mouth of the container and the pushing of the bottle cap is impossible, the ring is pushed along the outer surface of the bottle cap and fitted into the bottle cap.

[0020]

[Operation] Compared with the conventional mounting method in which the bottle cap is rotated while fixing the container, this mounting method
By simply pushing in the cover, the bottle cap is screwed onto the mouth of the container and the pump dispenser is attached to the container.
Further, since the mounting can be performed only by pushing, the mounting can be performed quickly and the mounting speed can be increased.

[0021]

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

As shown in FIGS. 1 and 2, a pump dispenser 10 according to the present invention includes a cylinder 12, a valve housing 14, a cover 16, a return spring 18, and a trigger.
It is provided with 20 and a piston 22, and the cylinder, valve housing, cover, return spring, trigger and piston are all molded from plastic.

As can be seen from FIG. 3 in addition to FIGS. 1 and 2, the valve housing 14 includes a vertical portion 14-1 defining an inflow passage 24 therein and a horizontal portion 14- defining an outflow passage 25. It is formed into a substantially L shape consisting of 2. And the vertical part 14-1
A primary valve 31 is provided in the inflow passage 24 of the above, and a secondary valve 32 is provided in the outflow passage 26 of the horizontal portion 14-2. The valve seat of the secondary valve
28-2 is formed in the horizontal part 14-1, but the valve seat 28 of the primary valve
-1 is formed on the bottle cap described later. In the embodiment, the cylinder 12 is integrally formed with the vertical portion 14-1 below the horizontal portion 14-2.

As shown in FIG. 4, the primary valve 31 has a conical base portion 31-1 and a plurality of blades 31-2 extending from the base portion, for example, three blades 31-2 and is integrally molded from plastic. There is. The primary valve 31 is housed in the valve housing 14 between the ceiling wall 14A of the vertical portion of the valve housing and the valve seat 28-1 (see FIG. 1).

In such a blade-equipped primary valve 31, the pressing force is adjusted by adjusting the contact position between the blade 31-2 and the wall surface 14A, and the primary valve of the primary valve is adjusted under an appropriate pressing force. The opening and closing can be controlled accurately. Further, since it is the plastic primary valve 31, the primary valve does not corrode, and the liquid that should flow out is not altered. A primary valve of a steel ball may be used if there is no risk of altering the liquid.

As can be seen from FIGS. 1 and 2, the secondary valve 32 is formed of plastic integrally with the spinner (vortexing member) 34 and the leaf spring 36. Secondary valve 32, leaf spring 36,
The illustrated configuration in which the spinner 34 is integrally molded from plastic is known as disclosed in, for example, USP 4,558,821, and although not described in detail, a blind hole is formed in the center of the front surface of the spinner, and a pair of flow paths separated by 180 ° are provided. The road extends tangentially to the blind hole. Therefore, when flowing out of the tangential flow path into the blind hole, the liquid is swirled.

As shown in FIGS. 2 and 3, the valve housing 14 is provided with a pair of cantilever side walls 14-3 which extend in parallel to the horizontal portion 14-1 with the horizontal portion 14-1 interposed therebetween. The inner surface of the front end of the side wall 14-3 is chamfered, and the vertical engaging groove 15 is opened upward.
Are formed adjacent to the tip.

Further, a pair of support pieces 38 are respectively extended from the vertical portion 14-1 to the left and right so as to be orthogonal to the horizontal portion 14-2 of the valve housing, and the holes 38-1 are formed in the support pieces. Further, the support cylinder 40 extends downward from the cylinder 12 in parallel with the vertical portion 14-1.

As shown in FIGS. 1 and 2, the upper half of the trigger 20 is notched so as to be elastically deformable, and the engaging projection 21 is provided with the trigger.
Is formed on the outer surface of the side wall of each. The engagement protrusion 21 is
The trigger 20 is swingably attached to the valve housing 14 while being guided by the tip of the side wall 14-3 of the valve housing and engaged with the engagement groove 15, whereby the engagement protrusion is used as the swing center.

As shown in FIGS. 1 and 2, an engaging groove 22-1 is formed at the tip of the piston 22, and the engaging groove is engaged with the engaging piece 20-1 on the rear surface of the trigger, The piston is connected to the trigger-20 and linked with the swing of the trigger,
Reciprocates within 12. Due to the reciprocating movement of the piston 22, the liquid in the container is sucked up by the cylinder 12 and pressurized, and so-called pump action occurs. Piston head 23
Is integrally provided with a pair of skirt-shaped seal pieces 23-1 separated from each other on the left and right.

When the liquid is sucked up from the container to the cylinder 12 by the pump action, the liquid level may be lowered and a negative pressure may be generated in the container. Therefore, the ventilation hole 42 that prevents the generation of negative pressure by allowing air to flow into the container from the outside.
Is formed on the side wall of the cylinder 12, as shown in FIGS. 1 and 3 (A). When the trigger 20 and the piston 22 are at the initial position (outward position) shown in FIG. 1, the pair of seal pieces 23-1
The ventilation hole 42 is provided so as to be located between the two.

The trigger 20 is driven by the return spring 18
It is pressed to the initial position (outward position) shown in FIG. In the embodiment, the return spring 18 is formed of plastic into a leaf spring shape, the back curved portion 18-1 is fitted to the vertical portion 14-1 of the valve housing, and the front engagement piece 18-2 is attached. It is installed between the valve housing and the trigger by pressing it against the rear surface of the trigger 20 above the engagement piece 20-1 of the trigger (see FIGS. 1 and 2).

A nozzle 44 is fitted at the end of the horizontal portion 14-2 of the valve housing defining the outflow passage 26 therein (see FIG. 1), and the pressurized liquid swirled by the spinner 34 is in front of the nozzle. It flows out as an atomizing flow from an orifice (outflow hole) 45 at the substantially center of.

In the embodiment, as shown in FIGS. 1 and 2, the nozzle cover 46 is integrally formed with the nozzle 44 via the hinge 47. The nozzle cover 46 is a pump dispenser 10
When not in use, it is sandwiched between the side walls of the nozzle 44,
The back surface of the nozzle cover is brought into close contact with the orifice 45 of the nozzle to prevent liquid leakage.

A knob 46-1 is formed at the lower end of the front surface of the nozzle cover 46, and when the knob is grasped and the nozzle cover 46 is rotated counterclockwise around the hinge 47 in FIG.
Is opened and the pump dispenser 10 is ready for use. Then, the knob 46-1 is a notch in the ceiling wall of the nozzle 44.
44-1 is fitted to the pump dispenser
In 10 ready states, the nozzle cover 46 is fixed to the nozzle. Further, another notch 44-2 is formed on the ceiling wall of the nozzle 44. Needless to say, the shape of the nozzle 44 is an example, and the shape is not limited to the illustrated shape.

The container 50 in which the liquid is stored is a mouth part with a male screw.
It is provided with 51 and is blown from plastic, for example. Then, the pump dispenser 10 is attached to the container 50 by screwing the bottle cap 52 into the container mouth portion 51 (see FIG. 1).

In the present invention, the bottle cap 52 is formed of plastic so as to be elastically deformable in the radial direction, and is elastically deformed by being pushed into the container opening portion 51 so that the female screw of the bottle cap fits into the external thread of the container opening portion. It is screwed in tightly. That is, the bottle cap 52 is attached to the container mouth portion 51 only by pushing without rotating.

In the embodiment, the four slots 54 are conformally formed on the lower end of the bottle cap to elastically deform the bottle cap, but the elastically deformable structure is not limited to this.

As can be seen clearly from FIG. 5 in addition to FIGS. 1 and 2, the bottle cap 52 has large and small fitting cylinders 52-1 and 52-2 extending upward, and the large fitting cylinder is The small fitting cylinder is fitted to the vertical portion 14-1 of the valve housing, and is fitted to the support cylinder 40 of the cylinder of the valve housing. In this way, the bottle cap 52
Is non-rotatably mounted in the valve housing 14.

Further, a pair of hollow guide cylinders sandwiching the fitting cylinder 52-1 in a direction orthogonal to a line connecting the fitting cylinders 52-1 and 52-2.
52-3 is formed on the upper surface of the bottle cap 52 at a position aligned with the hole 38-1 on the support piece of the valve housing.
A flange 53 is formed on the lower end of the bottle cap 52.

A rib 55 is formed inside the upper end of the fitting cylinder 52-1 of the bottle cap, and the suction tube 56 is fitted into the bottle cap from below using this rib (see FIG. 1). The liquid in the container 50 is sucked up through the suction tube 56 and flows into the cylinder 12 through the primary valve 31.

As shown in FIG. 2, the cover 16 has a shape in which the lower end and the front surface (left surface) are opened, and
2, valve housing 14, return spring 18, trigger-2
A cover is placed over the 0, the piston 22, and the bottle cap 52 to accommodate the valve housing and the like.

As shown in FIGS. 2 and 6, the cover 16 has a fitting tube 58 that hangs down from the ceiling wall. The fitting tube 58 is
It is formed so as to be inserted through the hole 38-1 of the support piece of the valve housing and to be fitted into the guide cylinder 52-3 of the bottle cap from the outside in a nested manner. The guide cylinder 52-3, the fitting cylinder 58,
The number, positions, etc. of the holes 38-1 of the support piece of the valve housing are not limited to those shown in the figure.

In the embodiment, as can be seen from FIG.
The guide cylinder 52-3 of the bottle cap is formed hollow, and a slot is formed in the tip of the fitting cylinder 58 of the cover so that both the guide cylinder and the fitting cylinder can be elastically deformed. Therefore, the engagement tube 60 of the cover is the guide tube 52 of the bottle cap.
-3 is smoothly fitted and fitted, and the guide tube 52
The upper end of -3 is shaped like a circular arc, and a guide surface is provided to facilitate fitting.

The cover fitting cylinder 58 and the bottle cap guide cylinder 52-3 are sufficient as long as they can be firmly fitted, and are not limited to the illustrated constructions. For example, contrary to the illustration, the fitting tube 58 of the cover may be fitted inside the guide tube 52-3 of the bottle cap, or a slot may be formed in the guide tube 52-3 of the bottle cap. Good.

Further, a slant surface portion 58-1 is formed on the fitting tube 58 of the cover, and the slant surface portion is pressed against the edge of the hole 38-1 of the support piece of the valve housing by the elastic force to fit the slant surface portion 58-1. Sleeve
58, the play between the holes 38-1 is removed. Since the cover fitting tube 58 is relatively long, it is advisable to provide a rib on the base portion to reinforce the fitting tube 58.

As shown in FIG. 1, a bottle cap fixing ring 60 is arranged in the open lower end of the cover 16. For example, as shown in FIGS. 2 and 6, a rib 16-1 is formed from the ceiling wall to the inner wall of the cover 16, the inside of the tip of the rib is cut out, and the ring 60 is held lightly so that it does not come off in the cutout. Has been done. The position of the ring 60 in the vertical direction is defined by the cutout 16-2, and the rib 16-1 also serves as a stopper for the ring 60.

Although two ribs 16-1 with cutouts are formed on each of the left and right sides, a total of four ribs 16-1 are not limited thereto. Further, the structure for holding the ring 60 is not limited to the illustrated structure using the rib 16-1.

The ring 60 is formed in such a shape that it can be fitted onto the outer surface of the bottle cap 52 housed in the cover 16. Engage ring 60 and bottle cap 52 to cover
Engaging means 61 that pushes the bottle cap together with 16 and loses the engaging function under a certain resistance force or more is provided between the ring and the bottle cap.

In the embodiment, the engaging means 61 is embodied as an engaging piece formed on the inner surface of the ring 60 and abutting the shoulder portion of the bottle cap 52. Where the bottle cap 52
When the resistance force applied to is large, the engagement piece is in slight contact with the bottle cap 52 to the extent that the engagement piece 60-1 is easily deformed.

A pump dispenser will be described in detail later.
When 10 is placed right above the container 50 and the cover 16 is pushed in the direction of the container 50, the bottle cap 52 is first pressed against the container mouth 51 and elastically deformed as the cover is pushed. It is screwed onto the mouth and then the ring 60 is fitted onto the outer surface of the bottle cap.

As shown in FIGS. 1 and 2, the cover 16
The hook 16-3 hangs down from the ceiling wall of the cover at the tip of, and a notch 16-4 is formed in the ceiling wall behind the engaging piece. Then, the hook 16-3 of the cover engages with the edge of the notch 44-2 of the nozzle, so that the nozzle 44 is engaged and fixed to the tip of the cover 16. In addition, through the notch 16-4 of the cover,
The nozzle cover knob 46-1 fits into the nozzle cutout 44-1.

The pump dispenser 10 having the above structure is assembled as follows, for example. Of course, this assembly is an example, and the present invention is not limited to this.

As shown in FIG. 7, a ring 60, a primary valve 31, a bottle cap 52, and a suction tube 56 are provided below the valve housing 14 centering around the valve housing 14.
On the left side (front side) of the valve housing, the secondary valve 32,
The spring 18, the trigger 20, the nozzle 44, and the piston 22 are arranged.

Here, the primary valve 31 is aligned with the vertical portion 14-1 of the valve housing. And the bottle cap 52 is
The fitting cylinder 52-1 is aligned with the vertical portion 14-2 of the valve housing, and the fitting cylinder 52-2 is attached to the cylinder support cylinder 40-2.
Are aligned with each other. Furthermore, suction tube 56
Are aligned with the fitting tube 52-1 of the bottle cap, that is, the vertical portion 14-1 of the valve housing. The ring 60 is aligned with the bottle cap 52.

Further, the secondary valve 32 and the nozzle 44 are aligned with the horizontal portion 14-2 of the valve housing, and the return spring 18 is arranged between the vertical portion 14-1 of the valve housing and the trigger.
The trigger -20 attaches the engagement piece 20-1 to the side wall 14 of the valve housing.
-3 is arranged in alignment with the engaging groove 15. Further, the piston 22 is arranged in alignment with the cylinder 12, and the engagement groove 22-1 at the tip is aligned with the engagement piece 20-1 at the trigger-back surface.

The suction tube is arranged as described above.
While pushing the sleeve 56 into the bottle cap 52, push the bottle cap into the vertical portion 14-1 of the valve housing. In addition, the secondary valve 32, the return spring 18, and the trigger 20 together with the nozzle
Push 44 into the horizontal section 14-2 of the valve housing. here,
Pushed by the trigger 20, the piston 22 is pushed into the cylinder 12 integral with the valve housing.

Then, as can be seen from FIG. 1, the suction tube 56 is clamped and fixed to the rib 55 of the fitting cylinder 52-1 of the bottle cap. In addition, the bottle cap 52 is a primary valve.
31 is housed in the upper end of the fitting cylinder 52-1 and the fitting cylinder 52-1 is fitted to the vertical portion 14-1 of the valve housing, and the fitting cylinder 52-2 is fitted to the cylinder support cylinder 40. Meanwhile, it is pushed into the valve housing 14 and fixed. Here, until the upper surface of the bottle cap 52 almost comes into contact with the lower end of the vertical portion 14-1 of the valve housing, the bottle cap remains in the valve housing 14
Is pushed into.

When the bottle cap 52 is pushed into the valve housing 14, the ring 60 is held in place and the bottle cap is lightly pushed into the ring so that the engaging piece 61 of the ring is located above the bottle cap ( (See FIG. 8).

By pushing the nozzle 44 from the outermost side, first, the secondary valve 32 is pushed by the nozzle and pushed into the horizontal portion 14-2 of the valve housing to be housed. The nozzle 44 itself is also fitted and fixed to the tip of the horizontal portion 14-2 of the valve housing.

Further, the trigger 20 pushes the engaging piece 21 into the engaging groove 15 (see FIG. 2) of the side wall 14-3 of the valve housing to engage with the side wall 14-3 so that the trigger 20 can swing on the valve housing 14. Mounted. Trigger-20 is valve housing
The return spring 18 is engaged with the vertical portion 14-2 of the valve housing between the cylinder 22 and the horizontal portion 14-2, and the left end thereof with the trigger 20 by being pushed into 14. It is installed and arranged between the valve housing and the trigger.
Then, the return spring 18 presses the trigger 20 toward the outward position (initial position).

When the trigger 20 is pushed into the valve housing 14, the trigger is pushed by the trigger while the engaging piece 20-1 of the trigger is engaged with the engaging groove 22-1 at the tip of the piston.
22 is pushed into the cylinder 12.

In this way, by pushing in from below and from the left, all the constituent members except the cover 16 are integrally assembled into a unit (see FIG. 8). This unitized cylinder 12, valve housing 14, return spring
The assembly of 18, the trigger 20, the piston 22, the primary valve 31, the secondary valve 32, the nozzle 44, the bottle cap 52, the suction tube 56, and the ring 60 will be conveniently referred to as a unit assembly 62.

Then, as shown by the solid line in FIG. 8, the cover 16 is placed on the unit assembly 62 and covered with the unit assembly. Here, the front opening of the cover is directed to the left, and the pair of fitting cylinders 58 of the cover are respectively inserted into the holes 38-1 of the support piece 38 of the valve housing and the pair of guide cylinders 52-3 of the bottle cap. Aligned, the cover 16 is placed on the unit assembly 62.

Since the front surface (left side) is open in addition to the lower end, the cover 16 is easily elastically deformed. Therefore, for example, when the cover 16 is lowered with the ring 60 fixed and pushed into the unit assembly 62, the ring 60 easily enters the cover. Then, as shown by the alternate long and short dash line in FIG. 8, the cover 16 is assembled into the unit assembly until the ring 60 hits the notch 16-2 (see FIG. 2) of the cover rib.
It is pushed into 62 and covered. In this state, the cover 16 does not cover the lower end of the bottle cap 52, and most of the bottle cap 52 is exposed from the lower end of the cover 16.

At this time, the cover fitting tube 58 is inserted into the hole 38-1 of the support piece 38 of the valve housing, fitted into the guide tube 52-3 of the bottle cap, and guided by the guide tube. 16 is pushed into the unit assembly 62.

As described above, the pump dispenser 10 is operated by the detergent dispenser or the like in a state where the cover 16 is not completely covered by the unit assembly 62 and most of the bottle cap 52 is exposed from the lower end of the cover 16. Will be delivered and sold to.

Detergents and the like use such a pump dispenser 10 in a container 50 at a filling line for filling the container with liquid.
Attach to. That is, in the filling line, a filling step of filling the container 50 with the liquid, a pump dispenser 10 for the container.
The mounting process for mounting is continuously set.

Then, it is put on a bellcoton bay, etc.,
When the container 60 filled with the liquid reaches directly below the pump dispenser 10, the bellcotton bayer or the like is stopped, the container stops, and the pump dispenser 10 descends and is pushed into the container.

Until the lower end of the bottle cap 52 hits the upper surface of the container mouth 51, the cover 16 of the pump dispenser 10 freely descends with the bottle cap 52 and the ring 60 without receiving any resistance. .

However, when the lower end of the bottle cap 52 hits the upper surface of the container mouth 51, pushing of the bottle cap 52 is restricted, and the bottle cap remains at the position where it collides with the container mouth. Here, since the ring 60 is pushed by the rib 16-1 on the inner surface of the cover, the ring 60 descends together with the cover 16 and is pushed in until the engaging protrusion 61 on the inner surface of the ring hits the shoulder portion of the bottle cap 52. Is pushed in with the cover.

The engagement protrusion 61 on the inner surface of the ring is the bottle cap.
When it hits 52 (see FIG. 9), the pushing force applied to the cover 16 is transmitted to the bottle cap through the engaging projection. Since the slot 54 is formed at the lower end of the bottle cap 52 and the bottle cap is formed so as to be elastically deformable, the resistance force due to the collision between the container mouth portion 51 and the bottle cap 52 is essentially not so large. Further, the engagement protrusion 61 is originally formed so that a force larger than the resistance force can be transmitted.

Therefore, when the engagement protrusion 61 on the inner surface of the ring hits the bottle cap 52, the bottle cap is elastically deformed and pushed into the male screw of the container opening, and is forcibly screwed.

When the bottle cap 52 is sufficiently screwed to the container mouth portion 51 and reaches a predetermined screwing position, it becomes physically difficult to push the bottle cap and a large resistance force is generated.
Then, the engaging protrusion 61 of the ring is elastically deformed and loses the engaging function, and the cover 16 is further lowered and pushed together with the ring 60 while the engaging protrusion is brought into contact with the outer surface of the bottle cap 52.

While the fitting tube 58 of the cover is slid along the guide tube 52-3 of the bottle cap 52, the cover 16 is lowered and pushed together with the ring 60 to be fitted on the outer surface of the bottle cap 52. The cover is lowered and pushed in until the lower end of the cover fitting tube 58 hits the upper surface of the bottle cap 52 and a large resistance force is applied to the cover 16.
(See Figure 10). It should be noted that it is preferable that the inner surface of the ring 60 contacts the flange 53 at the lower end of the bottle cap 52 almost at the same time as the lower end of the cover fitting tube 58 contacts the upper surface of the bottle cap 52.

In this way, the cover 16 is lowered and pushed into the container 50 until the lower end of the cover fitting cylinder 58 hits the upper surface of the bottle cap 52 and the large resistance force is sensed. Is forcibly screwed into the container opening 51, and the pump dispenser 10 can be automatically attached to the container. Then, since the ring 60 covers the bottle cap 52 and regulates the elastic deformation of the bottle cap, the bottle cap is firmly screwed to the container opening.

That is, in the present invention, it is sufficient to push the cover 16 from just above the container 50 with a predetermined pushing force. Since the container 50 is pushed in from above, the container 50 does not fall down, there is no need to fix the container, and of course, there is no need to rotate the bottle cap.

According to the present invention, the pump dispenser 10 can be quickly mounted on the container 50, and the speed at which the dispenser is mounted on the container (mounting speed), as compared with the conventional mounting in which the bottle cap is rotated while fixing the container. Will be faster. For example, the mounting speed may be substantially the same as or higher than the speed (filling speed) in the step of filling the container with the liquid. Therefore, the mounting process 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 10, that is, the cover 16 from directly above the container 50, the mechanism for mounting the pump dispenser is structurally simplified, and the filling line. Is structurally simplified and downsized.

When the cover 16 descends to a position where a large resistance force is generated, the hook 16-3 at the tip of the cover is inserted into the notch 44-2 in the nozzle ceiling wall and engaged with the edge thereof.
The fitting cylinder 58 is fitted into the guide cylinder 52-3 of the bottle cap, and the tip of the fitting cylinder 58, which is sufficiently separated from the fitting cylinder 58, is attached to the nozzle 44.
The cover 16 is firmly attached to the unit assembly 62 because it is engaged with and fixed to.

In the conventional pump dispenser, the cover is
It is difficult to unitize the constituent members of the pump dispenser except for. 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. -It is distinguished from others by attaching labels, labels, etc.

On the other hand, in the present invention, as described above, the constituent parts of the pump dispenser 10 excluding the cover 16 are unitized to form the unit assembly 62. Therefore, by customizing the unit assembly 62 as a mass-produced product and covering the mass-produced unit assembly with a custom-designed cover 16 according to the requirements of a detergent manufacturer, a custom-designed pump dispenser 10 can be obtained at low cost. . In other words, at the producer level of the pump dispenser, it is possible to sufficiently meet the demand for custom design.

Further, in the present invention, the lower end of the bottle cap 52 is formed so as to be elastically deformable. Therefore, when the screw core is lowered during molding of the bottle cap 52, the lower end of the bottle cap 52 is elastically deformed, the screw core is forcibly pulled out from the bottle cap, and the mold release can be performed without rotating the screw core. . As described above, since it is not necessary to rotate the screw core at the time of mold release, the molding cycle is shortened and the bottle cap can be molded with high productivity. Further, since the rotating mechanism of the screw core is unnecessary, the molding die is simplified, the number of failures is reduced, and the die cost is low.

Pump dispenser mounted on container 50
10 is arbitrarily removed from the container by rotating the container and the pump dispenser relatively. for that reason,
A customer who has purchased a combination of the container 50 and the pump dispenser 10 from a detergent supplier or the like can easily perform refilling if necessary.

In the embodiment, the elastically deformable engaging projection provided on the inner surface of the ring 60 is used as the engaging means 61, but the invention is not limited to this. For example, an engaging protrusion may be provided on the outer surface of the bottle cap 52. Further, the engaging projections may be peeled off without elastically deforming. Of course, the engagement means 61 is not limited to the engagement protrusion.

The above-described embodiments are intended to explain the present invention, and are not intended to limit the present invention in any way. The present invention includes all modifications and alterations within the technical scope of the present invention. It goes without saying that it will be done.

[0087]

As described above, according to the method of mounting the pump dispenser of the present invention, it is sufficient to push the cover with a predetermined pushing force from directly above the container. And since it is pushed in from above, the container does not fall down and it is not necessary to fix the container,
Of course, there is no need to rotate the bottle cap.

Therefore, the pump dispenser can be quickly mounted on the container, the mounting speed can be increased, and the speed in the filling line can be increased.

Since it suffices to lower and push the cover of the pump dispenser just above the container, the mechanism for mounting the pump dispenser is structurally simplified,
The filling line is structurally simplified and downsized.

Further, according to the pump dispenser of the present invention, the mounting speed to the container is increased, the speed in the filling line can be increased, and the mechanism for mounting the pump dispenser is structured. The filling line is structurally simplified and miniaturized.

Further, since the constituent parts of the pump dispenser excluding the cover are unitized to form the unit assembly, the custom designed cover is put on the unit assembly of the mass-produced product so that the pump of the custom design is formed. A dispenser can be obtained easily and inexpensively.

Since the lower end of the bottle cap is elastically deformable, it is not necessary to rotate the screw core at the time of mold release, the molding cycle is shortened, and the bottle cap can be molded with high productivity. Further, since the rotating mechanism of the screw core is unnecessary, the molding die is simplified, the number of failures is reduced, and the die cost is low.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view of a pump dispenser.

FIG. 3 is a vertical sectional view, a left side view and a plan view of a valve housing. It is a side view.

FIG. 4 is an enlarged perspective view of a primary valve.

FIG. 5 is a vertical sectional view and a left side view of a bottle cap.

FIG. 6 is a pump dispenser before mounting on a container.
FIG. 4 is a cross-sectional view of a part of FIG.

FIG. 7 is a layout view of the pump dispenser during assembly.

FIG. 8 is a view showing how the cover is incorporated into the unit assembly.

FIG. 9 is a front view of the bottle cap and the container while the pump dispenser is being attached to the container.

FIG. 10 is a front view of the bottle cap and the container when the mounting of the pump dispenser on the container is completed.

[Explanation of symbols]

 10 Pump dispenser 12 Cylinder 14 Valve housing 14-1 to 14-3 Vertical part, horizontal part and side wall of valve housing 15 Engagement groove 16 Cover 16-1 Rib on inner wall of cover 16-2 Notch at tip of rib 16 -3 Hook at the tip of the cover 18 Return spring 20 Trigger 21 Trigger engagement protrusion (center of swing) 22 Piston 24 Inflow passage 26 Outflow passage 31 Primary valve 32 Secondary valve 34 Spinner 38 Support piece for valve housing 38-1 Hole of support piece 40 Cylinder support tube 42 Ventilation hole 44 Nozzle 44-1 and 44-2 Notch of nozzle 45 Nozzle orifice 46 Nozzle cover 50 Container 51 Container external thread 52 Bottle cap 52- 1, 52-2 Bottle cap fitting tube 52-3 Bottle cap guide tube 54 Bottle cap lower end slot 56 Suction tube 58 Cover fitting tube 60 Ring 61 Engaging means (engagement of inner ring surface) (Projection) 62 Unit assembly

Claims (13)

[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 uses a male screw of a bottle cap as a male screw of a container cap. In a method of mounting a pump dispenser which is mounted by wearing, a bottle cap which is elastically deformed in a radial direction is partially housed in the cover and the cover of the pump dispenser placed right above the mouth of the container is pushed downward; The pushing force of the cover is transmitted to the bottle cap through the ring placed above the bottle cap, and the bottle cap is pushed into the container mouth and screwed; after that, the ring is lowered along the outer surface of the bottle cap, How to install the pump dispenser fitted in the. 2. A pump dispenser that sucks and pressurizes the liquid in the container into the cylinder by the reciprocating motion of the piston that is interlocked with the swing of the trigger, and fills the container with the liquid by a filling line. In the method of mounting the pump dispenser by screwing the bottle cap onto the male screw at the mouth of the rear container, the cover of the pump dispenser in which the bottle cap that elastically deforms in the radial direction is partially housed in the cover is attached. , Push downwards just above the container; in the first half of the push, the pushing force from the cover is transmitted to the bottle cap via the ring above the bottle cap to push the bottle cap into the container mouth and screw it in; pushing In the latter half of the process, the ring is lowered along the outer surface of the bottle cap and fitted into the bottle cap to control the elastic deformation of the bottle cap. How to install - pump dispenser was. 3. A container, in which components such as a plastic trigger, a piston, a cylinder, etc., which suck up and pressurize a liquid and contribute to the pump action, are housed in a cover under the pump action caused by the swing of the trigger. In a pump dispenser that is attached to the male thread of the mouth by screwing a plastic bottle cap; the bottle cap is stored in the cover so that it can be pushed downward,
A slot is provided on the lower end of the bottle cap so as to be elastically deformable in the radial direction; a ring that can be fitted to the outer surface of the bottle cap can be pushed together with the cover and inside the lower end of the cover above the bottle cap. An engaging projection is provided between the ring and the bottle cap for transmitting the pushing force applied to the cover to the bottle cap through the ring, and lowering the bottle cap together with the cover and the ring; this engaging projection is constant. A pump dispenser characterized by being deformed or separated to lose the engagement function under the above resistance force. 4. A bottle cap is screwed and attached to the container mouth, and the liquid in the container is sucked up by a cylinder through an inflow path by the reciprocating movement of a piston which is interlocked with the swing of a trigger. In a pump dispenser in which a pressurized and pressurized liquid flows through an outflow passage and flows out from an orifice of a nozzle at the tip of the outflow passage; the fitting cylinder is hung from the cover, and the fitting cylinder of the cover slides. A guide tube that can be fitted is extended from the upper surface of the bottle cap, and a slot is provided on the lower end of the bottle cap to make it elastically deformable in the radial direction; a ring that can be fitted to the outer surface of the bottle cap can be pushed together with the cover, It is arranged above the bottle cap and inside the lower end of the cover; the pushing force applied to the cover is transmitted to the bottle cap through the ring to cover the ring. Both engaging projections lowering the bottle cap is provided between the ring inner surface, the bottle cap outer surface; under the engaging projections certain level of resistance force,
A pump dispenser characterized by being deformed or peeled off to lose the engagement function. 5. A substantially L-shaped member having a vertical portion defining an inflow passage and a horizontal portion defining an outflow passage, and
A valve housing in which a cylinder is integrally formed with a vertical portion below a horizontal portion; a primary valve disposed in an inflow passage of the valve housing to control a flow of liquid to the cylinder; and disposed in an outflow passage. A secondary valve that controls the flow of liquid from the cylinder; a trigger that is swingably attached to the valve housing; a trigger that is interlockable with the trigger and reciprocates in the cylinder in conjunction with the swing of the trigger. A moving piston; a nozzle having an orifice serving as an outlet and attached to the end of the horizontal portion of the valve housing; a return provided between the trigger and the valve housing to press the trigger toward its initial position. A spring; a guide tube,
A plastic bottle cap that has a fitting cylinder that is fitted and fixed from below in the vertical portion of the valve housing and that has a slot at the lower end and that is screwed onto the male screw of the container mouth; the ceiling wall A valve housing, which is provided with a fitting cylinder that hangs from the valve cap,
A plastic cover with a valve housing and a bottle cap that is placed on the bottle cap and has a front surface and a lower end that can be stored; a ring that is stored at the lower end of the cover and is pressed onto the outer surface of the bottle cap by the cover. When;
A pump dispenser, comprising: a ring, a bottle cap, engaging means for pressing the bottle cap together with the cover, and losing engagement function under a certain resistance force or more. 6. The engagement means is an engagement projection which is formed on either the inner surface of the ring or the outer surface of the bottle cap and is elastically deformed or peeled off under a resistance force of a certain level or more. Pump dispenser. 7. The pump dispenser according to claim 5, wherein a rib is formed on the inner surface of the side wall of the cover, and the ring is pushed by the rib and is pushed together with the cover. 8. The nozzle has a notch in a ceiling wall, and a hook engaging with an edge of the notch of the nozzle has a cover at the tip of the cover.
The pump dispenser according to any one of claims 5 to 7, which is suspended from the ceiling wall of the pump. 9. The bottle cap guide cylinder and the cover fitting cylinder are elastically deformable.
The pump dispenser according to any one of 1. 10. The pump dispenser according to claim 5, wherein the guide cylinder of the bottle cap is formed in a hollow shape, and a slot is formed at the lower end of the cover fitting cylinder. 11. A bottle cap guide cylinder and a cover fitting cylinder are formed in a relative length that serves as a stopper that limits a fitting position of a ring fitted to the outer surface of the bottle cap. 10. The pump dispenser according to any one of 10. 12. The cylinder according to claim 5, further comprising a support cylinder extending downward, and another fitting cylinder fitted to the support cylinder of the cylinder is further formed on an upper surface of the bottle cap. Pump dispenser. 13. A substantially L-shaped molding having a vertical portion defining an inflow passage and a horizontal portion defining an outflow passage therein, and a cylinder integrally formed with the vertical portion below the horizontal portion. A molded valve housing; a primary valve disposed in the inflow passage of the valve housing to control the flow of liquid to the cylinder, and a secondary valve disposed in the outflow passage to control the flow of liquid from the cylinder. A valve; a trigger swingably attached to the valve housing; a piston reciprocally attached to the trigger and reciprocating in the cylinder in association with the swing of the trigger; and an orifice serving as an outlet. A nozzle having a notch in the ceiling wall and attached to the end of the horizontal portion of the valve housing; and a return spring that is provided between the trigger and the valve housing and presses the trigger toward its initial position. And; a hollow guide cylinder and a fitting cylinder that is fitted and fixed to the vertical portion of the valve housing from below are provided on the upper surface, and a slot is provided at the lower end, and they are screwed to the external thread of the container opening. A plastic bottle cap; a fitting cylinder that hangs down from the ceiling wall and is fitted into a bottle cap guide tube, and has a slot formed at its lower end, a rib formed on the inner surface of the side wall, and the edge of the nozzle cutout. A hook that hangs from the ceiling wall at the tip so that it can be engaged with the valve housing, and a plastic cover with an open front end and a lower end that can cover the valve housing and the bottle cap by covering the valve housing and the bottle cap; Stored at the bottom,
A ring that is pressed onto the outer surface of the bottle cap by the ribs of the cover and is molded on either the inner surface of the ring or the outer surface of the bottle cap, and presses the bottle cap by engaging the ring and the bottle cap, Relative length comprising an engaging means that elastically deforms or peels off under resistance to lose the engaging function; and serves as a stopper that limits the fitting position of the ring fitted to the outer surface of the bottle cap. A guide tube for the bottle cap and a fitting tube for the cover are formed on the cylinder, and the cylinder has a supporting tube extending downward, and another fitting tube to be fitted to the supporting tube of the cylinder is further formed on the upper surface of the bottle cap. Pump dispenser that is used.