DE102009040143A1 - Dispensers - Google Patents

Abstract

The present invention relates to a metering dispenser having at least one chamber (4) for receiving a product and a hand-operated pump (11) associated with the chamber (4) with a pumping chamber (36) with closable inlet and outlet openings (32, 38) and one a pump piston (28) resettable with a spring (14) for producing a pressure difference conveying the product from the chamber (4) and a removal opening (46) communicating with the chamber (4) and formed on a dispensing head (40) for actuating the pump (11) relative to the chamber (4) is movable. The present invention provides a metering dispenser in which the unintended discharge of product from the removal opening is not to be feared and the metering dispenser according to the invention has a head volume (40) formed between the outlet opening (38) and the removal opening (46) in the dispenser head (40) ), which is changeable.

Description

The The present invention relates to a metering dispenser with at least a chamber for receiving a product and associated with the chamber Hand-operated pump with a pumping chamber and lockable Inlet and outlet openings for producing the product from the chamber promoting pressure difference and a discharge opening, which communicates with the chamber and formed on a dispensing head is that for actuating the pump relative to the chamber is mobile.

Such dispensers are well known for storing and delivering cosmetics and personal care products. A generic dispenser in the form of a multi-chamber dispenser is for example in the EP 1 077 880 or the EP 1 399 370 described.

By Actuating the pump will transfer the product from the chamber promoted the pumping chamber in the direction of the removal opening. When the donor is put into operation for the first time, the person to be removed is located Product regularly exclusively in the Chamber, where it is accessible via the lockable and outlet ports of the pump from atmospheric Protected influences. At first commissioning by delivering volume of the product from the dispenser But this is behind the flow direction Pump in a space formed in the dispenser head, which is between the outlet opening of the pump and the removal of the dispenser head extends and hereinafter referred to as head volume. at Actuation of the pump is the product from the removal opening promoted and can be removed there. It deletes the user regularly at the removal opening over, so that no volume of the product protrudes there. Indeed If the product is directly at the discharge opening, then that, for example, when heated solely as a result of Thermal expansion emerges from the removal opening, even if the pump is not operated. Also pressure differences, for example, when traveling at different heights Seabed, can cause the product unintentionally emerges from the removal opening.

The The present invention seeks to remedy this situation to create the problem described above. She wants in particular indicate a dosing device in case of accidental leakage of product from the removal opening not to be feared is.

to This object is achieved with the present invention a dosing dispenser with the features of claim 1. This differs from the aforementioned generic State of the art in that between the outlet opening and the removal opening formed in the dispenser head Head volume is changeable.

The Training of the prior art dispenser with a variable Head volume creates the opportunity after removal of product from the donor to increase the head volume. Prevent such an increase in volume regularly the inlet and outlet closing valve elements and / or viscosity differences of incoming air and viscous product that product flows from the chamber in the direction of the dispenser head. Accordingly follows from the enlargement of the Head volume retraction of the product from the removal opening. After increased head volume is the product therefore no longer directly to the removal opening. Temperature fluctuations or pressure fluctuations lead accordingly no longer causing product inadvertently from the removal opening exit. Rather, the volume change is in the head volume such that at usually expected Pressure or temperature fluctuations, the product in the enlarged Can expand head volume, without this in the field of Removal opening passes.

preferred Further developments of the present invention are in the subclaims specified.

The The present invention will now be described with reference to exemplary embodiments explained in connection with the drawing. In this show:

1 A longitudinal sectional view through a first embodiment of a dosing dispenser;

2a -H longitudinal sectional views of in 1 embodiment shown at different stages in the operation of the dosing dispenser;

3 A longitudinal sectional view through a second embodiment of a dosing dispenser;

4a -F longitudinal sectional views of in 3 embodiment shown at different stages in the operation of the dosing dispenser;

5 A longitudinal sectional view through a third embodiment of a dosing dispenser and

6a -K longitudinal sectional views of in 5 shown embodiment at different stages in the operation of the dosing dispenser.

The in the 1 . 3 and 5 shown Embodiments of Dosierspendern have substantially the same structure with a cylindrical housing 2 which is a chamber 4 surrounds for product and can be closed at its lower end and a follower piston 6 absorbs itself, which is at full filling, ie in the delivery state of the dosing dispenser on the ground.

On the opposite side is on the case 2 a pumping element 8th on the case 2 fitted and locked with this front side. The pumping element 8th forms a pump cylinder 10 one with reference 11 characterized pump and a concentrically arranged thereto, the pump cylinder 10 towering ring wreath 12 out, which is a spring 14 surrounds the outside, located at the bottom of the pumping element 8th supported. The other end of the spring 14 acts with a return element 16 together, which two concentrically formed sections, namely a first section 18 and a second section 20 Includes, over a flexible membrane 22 connected to each other. The outer peripheral surface of the return element 16 becomes on the inner peripheral surface of the ring of rings 12 guided. The second section 20 of the return element 16 is with a piston element 24 connected. The second section 20 is this frontal on a pumping piston dome 26 put on, at its opposite end a pump piston 28 carries, which on the inner peripheral surface of the pump cylinder 10 sealingly rests. In the bottom of the pump element 8th and inside the pump cylinder 10 is a valve disc 30 held with an inlet opening 32 for forming a pressure difference across the inlet opening 32 acting inlet valve 34 interacts. Through this inlet valve 34 is the inlet to a pumping chamber 36 formed next to the variable volume between the pump cylinder 10 and the pump piston 28 a partial volume of the hollow pumping piston dome 26 includes and upper side through an outlet opening 38 an exhaust valve is limited. This outlet valve will be explained in more detail below with reference to the various embodiments.

The Exhaust valve is for the various embodiments each deviating designed.

All embodiments in turn have a dispensing head 40 on, the lower end of a catch 42 in the in the 1 . 3 and 5 shown starting position of mating surfaces on an outer ring of the pumping element 8th are shaped, cooperates, so that the dispenser head 40 on the pumping element 8th and thus on the housing 2 is held. The dispenser head 40 forms at its upper end a removal opening 46 and also carries a closure element 48 which rotatably on the dispenser head 40 is stored and a shutter 50 comprising, by turning the closure element 48 in front of the removal opening 46 can be brought to cover this. The closure element 48 has a journal 52 on, in a corresponding to it on the dispenser head 40 trained axle 54 is engaged. The dispenser head 40 is on its top of locking devices 56 surmounted over which the closure element 48 captive on the dispenser head 40 is fixed. The closure element 48 also forms an Aritiersteg 58 out in the in the 1 and 3 shown closure position of the dosing dispenser, wherein the aperture 50 the removal opening 46 closes, on a frontal extension 60 of the Ring of Wreath 12 rests so that the dispenser head 40 not down, ie towards the chamber 4 can be pressed.

The dispenser head 40 further comprises an inner support ring 62 in one of the first section 18 trained groove is added, leaving the dispenser head 40 with the return element 16 is firmly connected.

In the embodiments of the 1 and 2a to h, the exhaust valve comprises a valve lifter 70 standing in the hollow pumping-piston dome 26 recorded and is movable relative to this. The pumping piston dome 26 has an upper tapered area 26a and an underlying portion enlarged in diameter relative thereto 26b and 27 , Between the two areas 26a and 26b forms the pumping piston dome 26 on the inner circumference a beveled cone 27 out. In the in 1 shown starting position, in which the valve head 40 over the catch 42 due to the biasing force of the spring 14 on the pumping element 8th is supported, there is a ram ring 72 within the rejuvenated area 26 , The other end of the pestle 70 is in through the dispenser head 40 formed recording 74 held in the middle of a ring-shaped wall segment 76 of the dispenser head 40 located. This wall segment 76 is about hinge-like structures on the one hand with the main part of the dispenser head 40 and on the other hand with the recording 74 connected. By virtue of this configuration, the wall segment can 76 relative to the dispenser head 40 moved and reset in the manner of a crackpot frog. This reset state represents the non-operating position of the holder and is in 1 shown. In this state is the wall segment 76 tilted outwards. With this Nichtbetriebsstellung the holder is the ram ring 42 at a distance from the cone 27 in the rejuvenated area 26a the pumping piston dome 26 ,

Concentric to the journal 52 forms the closure element 48 on its inner surface and within the locking means 56 a wedge-shaped displacer 78 out, the twisting of the closure element 48 from the in 1 shown closure position in which the aperture 50 the removal opening 46 closes, in an open position, with the wall segment 76 interacts with the wall segment 76 towards the pumping chamber 36 to urge.

In the following, the operation of the dosing dispenser with reference to the 2a to 2h clarified.

In the delivery state, the in 2a it is shown which 1 corresponds, is the recording 74 in the non-operating position. The removal opening 46 is through the aperture 50 closed The dispenser head 40 is due to the over the pumping element 8th and the support wreath 62 mediated compressive force of the spring 14 in the starting position, at which the dispenser head 40 opposite the housing 2 lifted out and over the latch 42 is held.

By turning the closure element 48 in the in 2 B shown opened position, in which the aperture 50 the removal opening 46 releases, pushes the displacer 78 against the wall segment 76 , so the recording 74 is moved to an operating position. In the starting position, the ram ring is initially located in this operating position 72 continue in the rejuvenated area 26a , but just above the cone 27 ,

When first pressed on the dispenser head 40 First, the valve tappet 70 relative to the pumping piston dome 26 moved, leaving the ram 72 the cone 27 happens. This relative movement is made possible by the flexible membrane 22 between the first and second sections 18 . 20 that stretches. In other words, a push against the dispenser head 40 and against the force of the spring 14 first, that only the first section 18 towards the case 2 is lowered, whereas the second section 20 remains stationary. The transition from 2 B to 2c shows this relative movement, in which the second section 20 towards the top of the dispenser head 40 pushed forward. As the movement of the dispenser head progresses 40 towards the case 2 is finally a further elongation of the membrane 22 not possible, so that the piston element 24 with the movement of the dispenser head 40 towards the case 2 is moved. The volume of the pumping chamber 36 diminishes as a result. The lowering movement of the dispenser head 40 and thus the movement of the piston element 24 finds its end when the tip of the catch 42 against the bottom of the pumping element 8th encounters. This final position is in 2d clarified.

Now relieves the user the dispenser head 40 , so first, the deformation of the membrane 22 reset. Accordingly, initially there is a relative movement between the dispenser head 40 and the valve lifter 70 and the piston element 24 , At the end of this relative movement is the ram ring 42 again in the rejuvenated hand 26a , whereby the outlet opening 38 is substantially closed ( 2e ). The relaxation of the membrane 22 further causes the pumping piston dome 26 along with the second section 20 less strong in the dispenser head 40 protrudes.

Since the ram crown 42 the outlet opening 38 closes, resulting in the further provision of the dispenser head 40 a suction force in the pumping chamber 36 , due to which the inlet valve 34 opens and product from the chamber 4 into the pumping chamber 36 flows. Filling the pumping chamber 36 with product takes place after the in 2e shown position and up to the in 2f position shown instead.

By repeated pumping the desired amount of product can be dosed to the dosing dispenser. Here, the follower piston runs 6 inside the case 2 in a conventional manner.

If the user wishes to end the purchase of product from the dosing dispenser, he becomes the closure element 48 from the in 2g shown position in the in 2h Turn shown position. This will be the displacer 78 relative to the wall segment 76 twisted and in one with respect to the wall segment 76 placed in a custody position. Due to the elastic restoring forces, the wall segment arises 76 in the manner of a crackpot frog, creating a head volume 80 which is between the removal opening 46 and the plunger wreath 72 in the dispenser head 40 is included, enlarged. As a result, this will be in the dispenser head 40 located volume of product relative to the removal opening 46 withdrawn. The removal opening 46 is beyond the aperture 50 closed (cf. 2h ), so that neither by pressure differences or temperature differences nor by unintentional intervention in the removal opening 46 Unwanted product may leak out of the dosing dispenser.

That in the 3 and 4 embodiment shown is similar to that in the 1 and 2 formed embodiment shown. Identical components are provided with the same reference numerals.

The main difference between the second embodiment and the embodiment of the 1 and 2 is that in the second embodiment of the plunger ring 72 has a larger diameter, so this is not in the tapered area 26 fits. Rather, the ram crown is 72 in the starting position against the cone 27 at. The second embodiment further lacks a movable, resettable and head volume 80 bounding wall segment 76 , The recording 74 in the second embodiment is rigid on the closure element 48 formed.

Also in the second embodiment is first, for example, the first time the closure element 48 relative to the dispenser head 40 turned to the removal opening 46 release. This step is with the 4a and 4b clarified.

Thereafter, the operation of the dispenser head 40 , In the case of the second exemplary embodiment, too, the first section remains here first 18 stationary relative to the pumping element 8th , Rather, it follows only an expansion of the membrane 22 with the consequence that the second section 20 stronger in the head volume 80 protrudes. As a result of the stretching of the membrane 22 the ram-ring disengages 72 from the cone 27 so that the outlet opening is released. Because in the in 4c shown position may product between the outer peripheral surface of the ram ring 72 and the inner peripheral surface of the enlarged portion 26b pass through. After maximum elongation of the membrane 22 also in this embodiment, the piston element 26 finally with the movement of the dispenser head 40 taken along (cf. 4d ). The volume of the pumping chamber 36 is reduced until the dispenser head 40 in the end position with its catch 42 against the pumping element 8th encounters.

Now the user takes the pressure from the dispenser head 40 , so the spring is pressing 14 initially under relaxation of the membrane 22 only the first section 18 upwards (cf. 4e ). As a result, the dispenser head rises 40 relative to the piston element 24 , which initially fixed relative to the pumping element 8th remains. At the end of this relative movement of dispenser head 40 and pumping element 24 puts down the ram crown 42 against the cone 27 so that as the return movement of the spring progresses 14 the piston element 24 together with the dispenser head 40 is moved back into the starting position (see. 4f ).

The relaxation of the membrane, ie the change in position of 4d to 4e leads also in this second embodiment to the second section 20 less in that in the dispenser head 40 between the ram ring 42 and the removal opening 46 formed head volume 80 protrudes. Accordingly arises between 4d and 4e an increase in the head volume 80 , This after repeated actuation of the dispenser head 40 to activate the pump 11 in the head volume 80 subsidized product is due to the removal opening 46 withdrawn. This alone ensures that pressure or temperature fluctuations do not cause product from the discharge opening 46 exit.

A third embodiment is in 5 shown. Again, the same components are identified by the same reference numerals with respect to the embodiments previously shown.

At the in 5 embodiment shown is the closure element 48 over on the axle journal 52 trained locking pin with the dispenser head 40 locked. In extension of the axle journal 42 ie, in the central longitudinal axis of the dispenser protrudes from the top of the dispenser head 40 a sealing plug 90 from, up to the return element 16 ranges, which compared to the embodiment previously shown within the second section 20 a sealing lip 92 forms, which sealingly on the outer peripheral surface of the sealing pin 90 is applied. The sealing lip 92 is present in one piece with the return element 16 educated. The sealing lip 92 but can also be formed as a separate component and on the return element 16 be attached.

For the function of the third embodiment: From the in 6a shown starting position of the delivery condition is first the closure element 48 rotated in the previously described manner to the removal opening 46 to release (cf. 6b ). After that the pump will start 11 Manually operated, ie the user presses the dispenser head 40 towards the case 2 , Here, first, the membrane 22 while reducing head volume 80 stretched (cf. 6c ). After maximum elongation of the membrane 22 becomes the piston element 24 taken along, so that the volume of the pumping chamber 36 ver diminishes. The end position is also formed here by the locking lug 42 against the pumping element 8th abuts (cf. 6d ).

When releasing the dispenser head 40 this is due to the force of the spring 14 pushed up. As already described above with reference to the first and second embodiments, the membrane initially relaxes 22 (see. 6e ), reducing the head volume 80 is enlarged. In this case, air enters through the removal opening 46 in the dispenser head 40 one. With progressive stroke movement of the dispenser head 40 eventually becomes the piston element 24 taken. Product flows through the inlet valve 34 into the pumping chamber 36 a (cf. 6f ).

Another pumping movement on the dispenser head 40 Causes product by the from the sealing lip 92 closed outlet opening 38 taking off the sealing lip 92 from the sealing plug 90 in the head volume 80 (see. 6g ) and finally from the removal opening 46 promoted (cf. 6h ).

Relieving the dispenser head 40 leads in the manner already described to increase the head volume 80 , A comparison of 6h and 6i clarifies that the membrane 22 takes a different direction. at 6h is the first section 18 below the second section 20 , ie the membrane is roof-shaped, whereas in 6i the second section 20 deeper than the first section 18 lies and the membrane 22 flattening in a funnel shape between these two sections 18 . 20 extends. This results in a significant increase in the head volume 80 , where at the same time the sealing lips 92 at the sealing pin 90 abut, leaving product from the pumping chamber 36 can not flow. Rather, it is through the removal opening 46 Air is drawn in and the product is removed from the discharge opening 46 withdrawn to the rear (cf. 6k ).

After the membrane 22 in the 6i shown position, a further provision of the same is not possible, so that with progressive movement of the dispenser head 40 in the direction of the initial position, the piston element 24 is taken and product from the chamber 4 through the inlet valve 34 into the pumping chamber 36 is withdrawn.

2

casing

4

chamber

6

follower piston

8th

pumping element

10

pump cylinder

11

pump

12

ring ring

14

feather

16

Return element

18

first section

20

second section

22

membrane

24

piston element

26

Pumpkolbendom

26a

tapered Area

26b

enlarged Area

27

cone

28

pump piston

30

valve disc

32

inlet port

34

intake valve

36

pumping chamber

38

outlet

40

dispenser head

42

locking lug

44

outer ring

46

removal opening

48

closure element

50

cover

52

journal

54

axle mount

56

latching means

58

locking web

60

renewal

62

support crown

70

tappet

72

plunger ring

74

admission

76

wall segment

78

displacement

80

head volume

90

sealing plug

92

sealing lip

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1077880 [0002]
• - EP 1399370 [0002]

Claims (17)

Dosing dispenser with at least one chamber ( 4 ) for receiving a product and a chamber ( 4 ), hand-operated pump ( 11 ) with a pumping chamber ( 36 ) with closable inlet and outlet openings ( 32 ; 38 ) and one with a spring ( 14 ) resettable pump pistons ( 28 ) for producing the product from the chamber ( 4 ) conveying pressure difference and a discharge opening ( 46 ) connected to the chamber ( 4 ) and at a dispenser head ( 40 ) is formed, which for actuating the pump ( 11 ) relative to the chamber ( 4 ) is movable, characterized in that a between the outlet opening ( 38 ) and the removal opening ( 46 ) in the dispenser head ( 40 ) trained head volume ( 80 ) is changeable. Dosing dispenser according to claim 1, characterized by a head volume ( 80 ) limiting restoring element ( 16 ), which with the spring ( 14 ) of the pump ( 11 ) and when the pump is relieved ( 11 ) is in a starting position and which one with the spring ( 14 ) cooperating first section ( 18 ) and one on the pump piston ( 28 ) second section ( 20 ), wherein the first and second sections ( 18 ; 20 ) are movable relative to each other. Dosing dispenser according to claim 1 or 2, characterized in that the pump ( 11 ) a hollow pumping piston dome ( 26 ), which is connected to the pump piston ( 28 ) of the pump ( 11 ) and that the second section ( 20 ) at the end of the pumping piston dome ( 26 ) is supported. Dosing dispenser according to one of the preceding claims, characterized in that the dispenser head ( 40 ) one of the outlet opening ( 38 ) associated valve body ( 70 . 90 ) whose position to the outlet opening ( 38 ) when changing the head volume ( 80 ) changed. Dosing dispenser according to claim 4, characterized in that the dispenser head ( 40 ) relative to one with the chamber ( 4 ) connected pumping element ( 8th ) is movable and in the initial position by positive engagement on the pumping element ( 8th ) and that the valve body has a valve tappet ( 70 ) through which the through the outlet opening ( 38 ) passing product flow can be influenced. Dosing dispenser according to claim 5, characterized in that the valve stem ( 70 ) at reduced head volume ( 80 ) between itself and the pumping piston dome ( 26 ) leaves a flow passage and with an enlarged head volume with a tapered area ( 26a . 27 ) of the pumping piston dome ( 26 ) the outlet opening ( 38 ) cooperates in any case substantially occlusive. Dosing dispenser according to one of claims 5 or 6, characterized in that the valve tappet ( 70 ) for imparting a restoring force of the spring ( 14 ) to the pumping piston dome ( 26 ) can be applied. Dosing dispenser according to one of claims 1 to 4, characterized in that the dispenser head ( 40 ) relative to one with the chamber ( 4 ) connected pumping element ( 8th ) is movable and in the initial position by positive engagement on the pumping element ( 8th ) is held and that the valve body as a sealing plug ( 90 ) is formed, at the enlarged and reduced head volume, an outlet valve element ( 92 ) of the pump ( 11 ) is present. Dosing dispenser according to claim 8, characterized in that the outlet valve element ( 92 ) (may also be multi-piece) on the return element ( 16 ) is trained. Dosing dispenser according to one of the preceding claims, characterized in that the removal opening ( 46 ) with a movable on the dispenser head ( 40 ) held closure element ( 48 ) is closable. Dosing dispenser according to claim 10, characterized in that the closure element ( 48 ) rotatable on the dispenser head ( 40 ) is stored. Dosing dispenser according to claim 10 or 11, characterized in that the closure element ( 48 ), at least one displacer ( 78 ) with a movable, resettable and the head volume ( 80 ) bounding wall segment ( 76 ) of the dispenser head ( 40 ) cooperates. Dosing dispenser according to one of the preceding claims, if dependent on claim 8, characterized in that the dispenser head ( 40 ) for the valve lifter ( 70 ) a holder ( 74 ) formed by actuation of the closure element ( 48 ) from a non-operating position, in which the valve stem ( 70 ) in an outlet opening ( 38 ) is held in a substantially occlusive position, can be brought into an operating position, in which upon actuation of the pump ( 11 ) Product through the outlet ( 38 ) can be applied. Dosing dispenser according to claim 12 and 13, characterized in that the holder ( 74 ) at the movable, recoverable and the head volume ( 80 ) bounding wall segment ( 76 ) and from the displacer ( 78 ) can be brought from the non-operating position in the operating position. Dosing dispenser according to claim 14, characterized in that the holder ( 74 ) forcibly when opening the removal opening ( 46 ) of the Non-operating position is brought into the operating position and that the holder ( 74 ) by elastic recovery of the movable and the head volume ( 80 ) limiting wall segment ( 76 ) due to the closing of the removal opening ( 46 ) displacer ( 78 ) is returned to the non-operating position. Dosing dispenser according to claim 15, characterized in that the holder ( 74 ) is designed such that the valve stem located in the operating position ( 70 ) in the initial position, the outlet opening ( 38 ) closes. Dosing dispenser according to one of the preceding claims, if dependent on claim 10, characterized in that the closure element ( 48 ) with a locking bar ( 58 ), which is closed when the outlet ( 38 ) with one on the pumping element ( 8th ) trained slings ( 60 ) cooperates such that actuation of the pump ( 11 ) is prevented.