JPS60193875A - Dispenser for viscous product with outlet valve conducting lost motion cutting product arranged and distributed on outside - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a manually operated pumping dispenser, particularly useful for viscous products such as toothpaste. In the pending application (061565,540) assigned to assignee:
A viscous product dispenser is shown.

It shows an actuation lever with an integral external pulp that opens and closes the outlet of the tube. The device is.

It turned out to be very attractive from many points of view. % during the pumping stroke.

If the function of the check outlet valve is required not to obstruct or disrupt the flow of the physiological layer from the dispenser, e.g. if the product to be dispensed is carefully placed inside the container.

A cylindrical body of product dispensed from the unit, consisting of a toothpaste forming thin layers of striped material, when the layers need to be kept in an orderly state for aesthetic purposes. .

However, it has been found that the "flip-door"-like action that conventional valves make when closing tends to push against large amounts of product and create unsightly product residue. This also tends to cause the dispensed product to adhere to the cylindrical valve and not provide sufficient separation from the product remaining in the tube. Additionally, in some cases, the valve flaps may not be fully released.

It has been found that the product is forced out of the tube by the action of the pumping piston.

SUMMARY OF THE INVENTION Accordingly, an important object of the present invention is to improve the structure of the outlet valve and actuator while retaining the benefits of the arrangements described in the prior art (US applications). That is, the problems associated with continuous cutting of the dispensed product and the unsightly appearance of the discharge tube are eliminated, as is premature pumping action.

In view of the above, the present invention takes into account the structure and arrangement of the valve flap and the tube end such that when the valve flap returns to its closed position, the flap performs a guillotine-like shearing motion transversely to the outlet. This is what I did. In this respect, the valve flap moves through an arcuate stroke with two axes coinciding with the axes of the arcuate tube end faces. During the return movement of the valve flap, it thereby moves into close and contacting relation to the tube end, thereby removing the cylinder of product hanging from the tube.

Shear the tube cleanly without tapping or interfering with its free movement. Additionally, a combination actuator and outlet valve unit is mounted on the discharge tube. This unit causes the outlet valve to undergo an initial idle movement sufficient to open the outlet of the outlet before the downward movement of the actuator part of the unit causes the pumping piston to begin its movement through pumping stroke 2. As a result, the valve flap is completely removed from the pipe outlet when the product is discharged from the outlet under the influence of the pumping piston.

DETAILED DESCRIPTION OF THE EMBODIMENTS Dispenser 10 includes a tubular or cylindrical body 12 that is connected at a lower end 14 to a lower end 14.
It opens to the atmosphere through 16 holes in a decorative folded closure plate 18 or the like. A floating piston 20 sealingly engages the interior wall surface of the body 12 and has a metal skirt 22 or the like extending downwardly and outwardly at the bottom of the piston, which skirt also extends from the interior of the body 12. engaging the surface.

Skirt 22 has sufficient elasticity to bow down to the extent necessary to permit upward movement of piston 20 within body 12. Furthermore, at the same time, the skirt 22 has sufficient rigidity so that when the piston 20 attempts to move downward within the body 12, it bites into the wall surface 5 of the body, thereby causing the piston 20 to
The above-mentioned downward movement of is prevented.

The other end 24 of the body 12 has a web portion 28 extending laterally.
It includes a vertically centered sleeve 26 supported by and vertically centered. The sleeve 26 is the wsas of the pumping piston filter 2.

The piston 52 has its outer periphery engaged with the inner wall surface of the body 12 in a sealing state. aisle 5
4 is configured within the tubular shaft 50 and two pistons 2
0 and 52 cooperate with body 12 to form a pumping chamber 56 therebetween.

A part of the lower end of the tubular discharge pipe 5B is inserted into the sleeve 26, and the discharge pipe 58 itself is inserted into the sleeve 26.

The upper end of the plunger shaft 50 is inserted therein and is securely fixed there. The passage 40 is provided in the discharge tube 5B, and the discharge port 42 is located at the uppermost end thereof. piston 5
In order to bias the coil spring 44 and the discharge tube 58 toward the upper biased position as shown in FIG. It is mounted between the lower end 46 of the sleeve 26 and the lower end 46 bent inward.

The dispenser 10 also includes an actuator unit, generally designated by the numeral 48 and rotatably mounted on the fulcrum pin 50 on the discharge tube 58.

The fulcrum pin 50 is embodied as a pair of bottles that protrude laterally from a pair of opposing sides of the discharge tube 58, and is embodied as a pair of legs (one leg 5) of the actuator unit 4B.
2) is mounted on the discharge pipe 58.
, and the central part of those legs is the fulcrum pin 5 of each of them.
It is located above 0.

A pair of legs 52 protrude into the front part at a predetermined angle and length, so that the legs 52 are connected to the body 12 facing the discharge pipe 5B.
It is located below each shelf 54 above. Above shelf 5
4 has a first base [I! It has 156. When the actuator 4B is in the standby state shown in FIG. 1, the bottom surface 56 is in contact with a portion near the center of the upper surface of the leg 52, which is located on the opposite side from the fulcrum pin 50. . In that way, the bottom surface 56
cooperates with the fulcrum pin 50 to position the leg 52 therebetween. The spring force of spring 44 helps maintain this relationship, and actuator 4
8 tend to maintain the position shown in FIG. 1 by means of their protruding legs, and as a result, their outermost ends 58 are located on the shelf 54 located inside the terminal surface 56 of the shelf. Second
It will be located below the bottom surface 600 of.

The actuator 48 has a finger engaging portion 62 on one side when viewed from the fulcrum pin 50, and a valve flap portion 64 on the other side when viewed from the bottle. The flap portion 64 is integrally configured with the finger engaging portion 62 via an intermediate web portion 66, and the valve flap portion 64 is connected to the discharge port 42 when the actuator 48 is in the position shown in FIG. It has dimensions 2 such that it completely covers and closes.

The outermost end surface of the discharge port 42 of the discharge tube 58 has an arch shape when viewed from the side, and the center axis of the arched surface coincides with the axis of the fulcrum pin 50. Further, the valve flap itself, especially its lower surface 1111, is arched when viewed from the side so as to complement the arched end surface of the outlet 42.

In that way, the axes of the exposed end face of the outlet 42, the underside of the valve flap 64, and the axis of rotational movement of the actuator unit all coincide with the axis of the fulcrum pin 50.

Preferably, when the actuator 4B is in the position shown in FIG.
It is desirable that the position be such that it makes light contact with the outward facing end surface of the

If you wish, there is an overcap 68 on the dispenser 10.
It is also possible to provide the overcap 6B with the elasticity of the engagement snap base at the bottom of the overcap 6B so that the overcap 6B can be tightly closed against the body 12. Also, the lateral top wall 72 of the overcap 6B when the valve flap is in the position to fully close the outlet 42 as shown in FIG.

The spring 440 is disposed at a position abutting the upper rear end of the valve flap 64, thereby replenishing the force of the spring 440 that maintains the valve flap 64 in the closed position.

The return spring 44 normally maintains the pumping piston 52, discharge tube 6B and actuator unit 48 in the position of FIG. 1 in which the valve flap 64 tightly covers the discharge opening 42 and sealingly closes it. After removing overcap 68.

Applying downward finger force to the actuator 480 finger retaining portion 62 causes the finger engaging portion to rotate downward in a clockwise direction about the fulcrum pin 50 and the valve flap 64 to rotate in the same direction as described above. The outlet 42 also slides until it reaches the position shown in the figure.

During such initial free movement, the upper shelf 5
The end 56 of the leg 5 remains engaged with the corresponding leg 58 and the point of contact of the leg 52 with the surface 56 is
2 towards its outer end 5B. At this time, the distance between the fulcrum pin 50 and the surface 56 of the shelf 54 increases slightly so that the outermost end of the leg 52 is on the second surface 60 of the shelf 54.
During this time, the discharge tube 5 also moves very slightly downward as it is allowed to rotate upward into abutment. By then, the outer end 58 of the leg 52 has rotated into abutment against the second surface 60 and the outlet 42 has been substantially fully opened by the valve flap 64.
It should be clear from the figure. However, substantial pumping action of the pumping piston 62 has not yet occurred.

Thereafter, by continuing to press the finger engagement part, the actuator unit 4B changes the point at which it is supported from the point 50 to the point where the leg 52 engages against the surface 60 of the shelf 54;
This causes the outer end 58 of the leg 52 to abut against the surface 60 as a fulcrum. During this time, the pumping piston 52 is pushed downward.

The legs 52 are spaced apart from the first surface 56 until they reach the position of FIG. 5, at which time a full pumping stroke in one direction has been completed.

Thereafter, the force of the finger applied to the finger engaging portion 60 is removed (and the spring 44 rotates the actuator 48 counterclockwise, causing the pumping piston 52 and the discharge pipes 58 and 7 to During this return process, the actuator 4B reaches the position shown in FIG. 2, and the valve flap 64 just begins to slide back onto the discharge port 42.
while the actuator 4 comes to a substantial stop.
Sufficient spring force remains in spring 44 to continue biasing it in the counterclockwise direction for full movement.

After that, the discharge port 4 with the valve flap 64 in the open state
The flap 64 passes through the cylindrical body of the product extending through the discharge tube 54 and removes the product from the product remaining in the discharge tube 54 by the guillotine. Cut it like this. By this time, the valve flap 64 has fully returned to cover the outlet 42. The cylinder of product is then completely spaced from the product remaining within tube 5B in a neat, clean, and visually pleasing manner. and discharge port 42
As a result, no residue 7 is left in or around the product.

As the product in the pumping chamber 6 is emptied, 710
42 is closed with a valve flap 64, and the hole 16 in the aesthetic end cover 18 allows atmospheric pressure to flow through the piston 20.
Since it is attached to the bottom of the floating piston 20
moves upwards in the pumping chamber 6 by a corresponding displacement. From this perspective, the following can be understood. That is, during the operation of refilling the empty space of the pumping chamber 60 that has been emptied during the rapid pumping stroke, the valve flap functions as a check valve depending on the characteristics of the product to be dispensed. , the product is prevented from moving back too much in the discharge pipe 58, so that the effective volume of the pumping chamber 56 is reduced in proportion to the amount of product discharged by the piston 20 or pumping. It is easy to understand how things in room 56 could change.

It will be appreciated that only one embodiment of the invention is shown herein. However, various obvious modifications to 1) 11 above will be apparent to those skilled in the art without departing from the spirit of the invention. It is hereby understood that the scope of the invention includes any obvious modifications that may be made by those skilled in the art from time to time.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a dispenser constructed according to the objects of the invention, showing its actuator 7 in a pressurized, standby position with the outlet fully closed by the valve flap part of the actuator. . FIG. 2 is a partial longitudinal sectional view of the dispenser in FIG. 1, but with the valve flap portion of the actuator open. The actuator is shown at the completion of the initial idle movement, while the pumping piston has not yet begun to be depressed. FIG. 5 is a partial vertical cross-sectional view of the dispenser similar to FIG. 2, but showing the actuator moved to the maximum extent that the pumping piston can be depressed sufficiently. Main code 10...Dispenser 12...Bottle
Day 20... Compression piston 52...
Pumping piston 54.40...Passage 5B...
...Release pipe 42...Outlet 4B...
... Actuator 50 ... Fulcrum pin 5
2...Leg 56...First stationary surface 60
...Second stationary surface 64...Valve

Claims (1)

[Claims] 1. In a dispenser for viscous products, which has an outlet at the end of the product discharge passage, and the opening and closing of the outlet is controlled by an external valve, the valve returns to the position where the outlet is closed. In the meantime, the valve includes a valve mounting means for effecting a lateral cutting motion across the outlet, thereby rapidly cutting off the dispensed columnar product from the product remaining in the discharge passageway. Features a dispenser. 2. The bulb and the outlet are arranged in a relationship facing each other when the bulb is closed, and have mutually complementary light surfaces that are arcuate in outer shape when viewed from the lateral direction; What is the installation method? Claim 1 characterized in that at least the valve has a hinge structure adapted to cause an arcuate movement about a width substantially corresponding to the curved axis of said narrow face. Dispenser as described. 6. The valve is connected to an actuator that can be manually engaged to actuate the valve, and the actuator is connected to means for discharging product from the outlet when the actuator is operated. 2. The dispenser according to claim 1, wherein w% is a sign that the amount of water is %. 4. The actuator is coupled to the discharge means in such a way that the valve at least substantially opens the outlet by the actuator before the product is discharged by the discharge means. A dispenser according to claim 5. 5. The valve and the actuator are constructed as a common unit consisting of a plurality of parts molded into one piece, and the unit includes a protruding leg. The ejection means includes a fulcrum pin means movable by an actuator and supported by the leg means at an intermediate position between opposing ends of the leg means;
Further, a first fulcrum bin means is provided which faces the fulcrum bin means at a distance.
rotatably capturing said leg means between a second stationary surface;
Further, the dispenser has a second scan surface, the surface being spaced apart from the fulcrum pin means and opening the valve (the above-mentioned The dispenser according to claim 4, characterized in that, following the idle movement (during continued operation of the actuator, the second eye surface interlocks with the outer end of the leg means at the fulcrum). 6. a generally tubular body with a discharge tube at one end; a pumping piston disposed within the body and fixed to the discharge tube for reciprocating movement with the discharge tube relative to the body during a pumping stroke; The piston is tubular and cooperates with the discharge tube to form a discharge passageway for passing product from the interior of the body;
Initially, it is located at the opposite end of the body, and is movable only in the direction of the pumping piston in order to move the product in the body toward the body by following the pumping piston each time the product is released. a compression piston; a combination unit of an actuator and an outlet valve mounted on the outside of the discharge pipe so as to be rotatable around the line pipe; From the first position, in which the valve part of the unit closes the outlet of the discharge pipe, through one stroke of idle movement, the valve part closes the outlet of the discharge pipe, without significantly operating the pumping piston. further to a fifth position in which the pumping piston is actuated by the rocking motion by the actuator portion to expel product from the body; a dispenser for viscous products, comprising: elastic means operating in cooperation with said unit to deflect said unit towards said first position and to cause said pumping piston to assume a non-active position; Z. During the return movement of the unit from the second position to the first position, the valve portion of the unit is arranged to perform a shearing action across the outlet, thereby causing 8. The dispenser according to claim 6, characterized in that the dispenser facilitates effective cutting of the cylinder of released product from the product remaining in the product.8. the discharge tube has a fulcrum pin rotatably engaged with the leg at a position intermediate between the ends of the membrane; 1) having a first stationary surface disposed at 1), and during the idle movement of opening and closing the initial valve portion of the unit, the container cooperates with a guide to hold the leg between them; rotatably supported; the container further has a second surface spaced apart from the fulcrum pin and arranged in fulcrum engagement with the outer end of the leg; The fulcrum holding is configured to be performed while the unit continues to operate following the above-mentioned movement of opening the valve portion when the leg swings away from the first l. 8. A dispenser according to claim 7, characterized in that: