EP2917128B1 - Device for dosing creams - Google Patents

Description

State of the art

It is known from the prior art that a tube can be metered in such a way that the diameter of the outlet opening can be varied. In addition, a dosage takes place by the applied squeezing pressure of the tube.

In this context, also on the WO 2004/092032 A1 which also shows a metering device which reaches a dosage aund output via a rotary element. Next will be on the US 5,636,765 , the DE 681 256 and the US 2,076,720 A note, which also show different metering devices.

The known tube closures close the tube, but have no way to dose the auszubringenden by squeezing the tube strand, ie, to dose to a desired set Ausbringlänge, therefore, in the leaflets of medication always the dimensions, for example 2 cm, 4 cm or pea size , walnut size indicated.

The human sense of proportion and feeling can be deceived, so that the user can not press the exact, guaranteed, desired dosage from the tube.

Object of the invention.

The new idea is to dose a cream and gel medium from tubes, i.e. to be a dosing aid. The well-known application handling, squeezing and squeezing the tube should be integrated.

Solution of the task.

To achieve the object, the features of claim 1.

With the new idea, the user, user should always be provided with the fixed set dosing quantity and strand length with the background that the consumer has the same handling as with the known tube.

For the drug manufacturer, this idea should also contribute to safety, since an unwanted under- or overdose is no longer possible.

In order to apply different dosages or strand lengths, the industry is offered the system with different Dosierraddurchmessern or with different sized dosing.

A device according to the invention serves for the metered dispensing of creams or gel-like products. These may be medicines, cosmetics, glue, silicone, or any other gel or creamy product. The gelatinous or creamy products are preferably provided as tube contents in a tube. The tube itself can be made of plastic or metal. As a term of the tube is here any To understand container, which is suitable to include the above products.

The device according to the invention constitutes a strand canister which can be applied to the tube. Applicable here means that the strand dispenser can be screwed onto the tube, eye-clamped, clinched or applied in another way. Applicable also means that the strand feeder can also be removed from the tube without tools.

In the strand feeder according to the invention, a metering wheel is included. This means that the metering wheel is attached to the strand feeder. In detail, this means that the strand feeder picks up the metering wheel. The metering wheel is rotatably mounted on or in the strand feeder.

The metering wheel has a metering chamber. Size, size, volume content or the surface quality of the dosing chamber can be adapted to the products to be delivered. Preferably, the metering chamber is cylindrical. The dosing chamber interacts with a ball piston. This means that, for example, a product pressed into the metering chamber pushes the ball piston in the direction of an outlet hole. Subsequently, the metering wheel is rotated by 180 °. In this state, the ball piston is again in the range of the delivery point of the product from the tube. If the tube is now manipulated, pushing further product into the dosing chamber and pushes the ball piston back in the direction of the exit hole and pushes the first introduced product from the exit hole.

The dosing according to the invention consists of two half-shells. This has the advantage that the metering wheel can be produced in a simpler manner.

According to the invention, the strand dosing device has a check valve which prevents the product from being drawn back into the tube by means of a re-tensioning of flexible tubes made of plastic.

The check valve comprises a sealing collar, wherein the check valve is spring-loaded with respect to the sealing collar. This leads to a better functionality and easier applicability of the check valve.

In addition, a concave finger receptacle is provided on the metering wheel. This leads to a simpler handling of the metering wheel.

Further advantages, features and details emerge from the following description of preferred embodiments.

By rotating the metering wheel 1 by 180 °, the tube 2 is opened and the tube contents 3 can by the known squeezing of the tube 2, i. Pressing and squeezing the tube wall 4, whereby the tube contents 3 can be removed via the outlet hole 5.

In Fig. 1 the strand dispenser 6 is screwed onto the tube 2 and protected with a protective cap 7 against contamination and uncontrolled actuation.

In a screw 8, two half-shells 9 and 10 are anchored on the split axle mount 11. The two half-shells 9 and 10 essentially form the metering wheel 8.

By rotating the metering wheel 1, the strand dispenser 6 is opened, so that the product to be dispensed can be removed from the dispensing hole 5 by squeezing the tube 2 and at the same time be able to flow out of the tube 2 into the dispensing space 12.

The Fig. 2 shows a section through the strand meter 6 with the existing two half-shells 10 and 9 metering 1. The product is metered via the central metering chamber 12 with the ball piston thirteenth

The Fig. 2 and Fig. 3 show the system in the closed position with the lying in the sealing seat 14 ball piston 13 and the filled metering chamber 12th

By rotating the metering wheel 1 by 180 °, the ball piston 13 is brought over the sealing sleeve 15 for locking, so that travels through the squeezing of the tube 2 of the tube contents 3 with the ball piston 13 in the dosing chamber 12 the specified way, and thereby the medium on the filled metering chamber 12 flows as a cream strand through the discharge hole and can be removed.

In the locked position, see Fig. 2 , The ball piston 13 in the sealing seat 14 lying, the system.

By rotating the metering wheel 1, the ball piston 13 is always moved alternately through the product squeezed out of the tube 2 via the fixed metering path and the desired strand length to the discharge hole.

The sealing collar 15 is seated in the housing 8 and seals between the tube 2 and metering wheel 1 from the squeezed out of the tube 2 medium for the transition into the metering chamber 12.

In Fig. 4 is the anchoring of the metering wheel 1, consisting of two half-shells 10 and 9 in the housing 8 on the split axle receptacle 11, shown.

On the flat surface of the tube thread 16, the sealing sleeve 15 is located.

Fig. 5 shows a variant with a check valve 17 to the tube 2, wherein a soft seal 18 as an attachment for the check valve 17, designed as a plate valve, is integrated directly on the threaded plan surface.

About the check valve 17 to the metering 1, the sealing sleeve 15 is integrated.

The check valve 17 is intended to be used for plastic tubes to stop the Rücksaugkraft triggered by the Kunststofftubenwandungen.

When Blechtuben no retraction force is present because the Blechtubenwand remains in the deformed state and does not want to reset like a plastic tube in the starting position due to its own material tension.

This idea offers the pharmaceutical and cosmetics market a safe dosing option and dosing aid for tubes.

This new system can also be used throughout the industry, e.g. Glues, silicones, greases etc ..

Through the use of different metering wheel diameters or metering chamber sizes, all metering volumes are covered by the system variants. Furthermore, due to the different sized dosing chambers as well as different materials in the dosing range, all creams and gel-like products can be dealt with.

Fig. 6 shows a sealing sleeve 15 according to the invention with spring-loaded check valve 17. The check valve 17 is formed so that it has a spring element 19 for closing the sealing sleeve 15 and a compression spring element 20 which controls the contact pressure to the half-shells 9 and 10 for dense function.

Fig. 7 shows the strand dosing device 6 as a view without a protective cap 7 with a concave finger receptacle 21 for actuating the metering wheel 1.

Fig. 8 shows the strand feeder 6 in section with the protective cap 7 and concave finger mount 21 fixed to the metering wheel 1 and the two half-shells 9 and 10 and the movable ball piston 13 in the Starting position above the sealing sleeve 15 for discharging the medium. After discharging the medium via the squeezing of the tube 2 of the ball piston 13 in the upper position of the metering chamber 12, see dashed line.

Position Number List

1

metering

2

tube

3

tube contents

4

tube wall

5

exit hole

6

Strangdosierer

7

protective cap

8th

screw shell

9

half shell

10

half shell

11

axle mount

12

metering

13

ball plunger

14

sealing seat

15

sealing sleeve

16

tubes threaded

17

plate valve

18

poetry

Claims (2)

1. A bead dosing means for dispensing creams or gel-like products as tube contents from a tube (2), wherein the bead dosing means (6) can be applied to the tube (2), wherein the bead dosing means (6) comprises a dosing wheel (1) and the dosing wheel (1) has a dosing chamber (12), wherein the dosing chamber (12) cooperates with a spherical piston (13), wherein the dosing wheel (1) is arranged rotatably on the bead dosing means (6) and has an exit hole (5), wherein a product pressed into the dosing chamber (12) pushes the spherical piston (13) in the direction of an exit hole (5), wherein the dosing wheel (1) is turned by 180°, as a result of which the spherical piston (13) is located again in the region of the point of discharge of the product from the tube, wherein by pressing the tube (2) further product is pushed into the dosing chamber (12) and pushes the spherical piston (13) again in the direction of the other exit hole and in so doing the product first introduced is pushed out of the exit hole (5),
   characterised in that
   the dosing wheel (1) consists of two half-shells (8, 9) and the bead dosing means has a non-return valve (17) which comprises a sealing collar (15), the non-return valve (17) being spring-loaded relative to the sealing collar (15), the non-return valve (17) having a spring element (19) for closing the sealing collar (15) and a compression spring element (20) which controls the contact pressure to the half-shells (9, 10) for tight operation, and the spherical piston (13), lying in a sealing seat (14), closing the dosing chamber.
2. A bead dosing means according to Claim 1, characterised in that the dosing wheel (1) has a concave finger receptacle (21).

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