EP2593237B1 - Dispenser with twist lock - Google Patents

Description

The invention relates to a dispenser according to the features of the preamble of claim 1.

Such dispensers have already become known in various embodiments. It is for example on the WO 2009/127651 A1 directed. Next is on the DE 10 2007 007 402 A1 to refer. In addition, the state of the art is the WO2008 / 010640 A1 to call.

In the case of the dispenser known from the latter document, the dispensing head is rotatably guided relative to the stationary dispensing part. By rotation of the dispenser head part of the dispensing head is rotationally entrained, wherein he runs within the fixed dispensing part in the link guides formed there at the same time and is thereby raised.

Based on the last-mentioned prior art, the invention is concerned with the task of specifying a dispenser of the specified type, which has an advantageous movement of the dispensing head.

This object is achieved in the subject matter of claim 1, wherein it is based on the fact that the dispenser head only the dispensing head axially moves or retracts, to which the dispensing head is rotationally locked connected to a fixed dispenser part.

Incidentally, in such a dispenser, individually or in combination, it is preferably provided that the dispenser head part is rotatably movable relative to a dispenser sleeve part located underneath. The dispenser headboard moves only horizontally. The dispenser headboard is also with the same Outer diameter provided as the dispenser sleeve part. When retracted, this results in practically a uniform round column,

The fixed dispensing part, with which the dispensing head is connected in a rotationally blocking manner, can be, for example, the dispenser sleeve part or the pumping chamber. Nevertheless, the connection allows axial relative movement between the dispensing head and the fixed dispenser part. The invention goes the way to provide the dispensing head in total, including the dispensing mouth, only axially movable. Relative to a storage space and / or a pumping chamber, in particular, supplementarily or alternatively but relatively fixed to a part which is held by another hand of the user upon actuation, results in the axial movement of the dispensing head no relative movement in the circumferential direction.

The extension and retraction can be achieved in different ways. For example, the dispensing head can be coupled to the dispenser head part via a cable pull, so that during the rotary movement of the dispenser head part by means of the cable an axial extension of the dispensing head takes place, which can then retract again, for example against spring force. Also, for example, a pinion / rack coupling may be provided. In this case, for example, a fixedly connected to a dispenser part outside the dispensing head and the dispenser head part pinion, with a horizontal axis, cooperate with a formed on the dispensing head vertical rack, wherein at the dispenser head part a horizontally encircling (inside) provided teeth can interact with the pinion.

However, it is preferred that the dispensing head is merely moved axially by means of a slotted guide between the dispensing head and the dispenser head part.

It is preferable for the dispenser head part to have a retraction opening with respect to a dispensing mouth of the dispensing head protruding at least partially relative to a connecting wall, which has a limiting surface extending obliquely to a vertical movement of the dispensing mouth relative to the dispenser head part. Due to the described kinematics and the resulting relative movements between the The dispensing head and the dispenser head part can thus be easily reached from the dispenser head part, also in the area of the dispensing mouth, by a simple retraction and extension of the dispensing head. As an alternative or in addition, it is also possible-if appropriate-only for a chamfer-in the circumferential direction-to be formed on the projecting section of the dispensing mouth and, if appropriate, for the opening width of the area of the dispenser head part receiving the dispensing opening in the retracted state to be sufficiently large. Thus, in the retracted state, an areal adjacent border between the dispensing mouth or a radially protruding portion of the dispensing head which forms the dispensing orifice and a corresponding inward-pointing radial edge region of the dispenser headpiece can then be reached on the upper side.

In further detail, it is also preferred that a rotatable sleeve is provided between the dispenser head part and the dispensing head to achieve the vertical movement of the dispensing head. The rotatable sleeve is then preferably rotatable relative to the dispenser storage space and / or the pumping chamber. It further preferably acts on the dispensing head and is acted upon by the dispenser head.

The sleeve can continue to perform an additional axial movement in the course of rotation. In this way, a relative to the angular movement of the dispenser head part significantly greater axial adjustment of the dispensing head can be achieved while still in the course of handling favorable angle of a slotted guide, if this design is used.

Fig. 1

eine Außenansicht des Spenders, im eingefahrenen Zustand des Kopfteils;

Fig. 2

eine Darstellung gemäß Fig. 1, bei ausgefahrenem Kopfteil;

Fig. 3

eine Darstellung gemäß Fig. 1, bei teilweiser Durchsicht durch das Spender-Kopfteil;

Fig. 4

eine Darstellung gemäß Fig. 2, bei teilweiser Durchsicht durch das Spender-Kopfteil;

Fig. 5

einen Querschnitt durch den Gegenstand gemäß Fig. 1, geschnitten entlang der Linie V-V;

Fig. 6

einen Querschnitt durch den Gegenstand gemäß Fig. 2, geschnitten entlang der Linien VI-VI.

The invention is further explained below with reference to the accompanying drawing, which, however, represents only one embodiment. Hereby shows:

Fig. 1

an external view of the dispenser, in the retracted state of the head part;

Fig. 2

a representation according to Fig. 1 , with the headboard extended;

Fig. 3

a representation according to Fig. 1 when partially viewed through the dispenser headboard;

Fig. 4

a representation according to Fig. 2 when partially viewed through the dispenser headboard;

Fig. 5

a cross section through the article according to Fig. 1 cut along the line VV;

Fig. 6

a cross section through the article according to Fig. 2 , cut along the lines VI-VI.

Shown and described, first with reference to the FIGS. 1 and 2 , a dispenser 1, which serves to dispense liquid to pasty masses. It has a dispensing head 3 accommodated in a dispenser head part 2 which at the same time forms the outer surface. The dispensing head 3 connects up to a pumping chamber 4, see for example Fig. 5 , The pumping chamber 4 has an inlet valve 5 and an outlet valve 6. It can also be provided only a valve.

Below the pumping chamber 4, a reservoir 7 is formed in which, for example, a follower piston, not shown here in detail, arranged can be. In the dispenser head part 2, an insert part 9 is further arranged, which has one or more Verstellkulissen 10, in which or a sleeve part 8 by means of one or more cams 11 runs. The insert part 9 is preferably arranged in a rotationally fixed manner relative to a sleeve part 12 which forms the reservoir or in any case externally surrounds it. The rotation lock can be given here alone by the frictional engagement, for example. Between the below-mentioned spring 16 and the related support areas. The insert part 9 is formed on the one hand with a holding part 13, which acts on a valve element 14 holder. On the other hand, it forms a receiving chamber 15, which is open at the bottom, in which the return spring 16 is received. Further, the insert part 9 forms a vertical guide 17 which cooperates with a counter guide part 18 of the dispensing head 3. The said parts or guides can also be provided as separate parts. The vertical guide 17 can, in one piece or separately, for example, be formed from two circumferentially offset, radially outside of the insert part 9 projecting vertically extending strip elements. The counter guide member 18 may also be a vertically extending ledge member. It may be formed protruding radially inwardly on a downwardly projecting pot wall of the dispensing head 3. The interaction of vertical guide 17 and counter guide member 18 allows only an axial movement of the dispensing head 3. The dispenser head part 2 interacts with the sleeve part 8 by means of a positive engagement 19 and consists of an inside formed on the dispenser head part 2 projection 33 which engages in a corresponding recess 20 of the sleeve part 8. The recess 20 may be formed on a horizontal circumferential outwardly cantilevered radial projection of the sleeve part 8. Seen over the circumference several positive connections between the dispenser head part 2 and the sleeve part 8 are formed visible. The projection 33 is preferably as only vertical formed extending bar. The strip can move vertically in the recess 20 in the course of the process.

Next, the sleeve part 8 forms a slotted guide 21, in which a fixedly connected to the dispensing head 2 sliding block 22 (FIG. Fig. 3 ), here designed as a journal, runs.

In a rotation of the dispenser head part 2 from the position according to Fig. 3 , to the right in the position according to Fig. 4 , The sliding block 22 is clearly high, so that the dispensing head 2 extends upward. At the same time, the sleeve part 8 is lifted according to the slide guide 10, so that a larger opening protrusion u of the dispensing head 2 results, as it corresponds to the height difference h, which passes through the sliding block 22 during rotation.

An outlet tube 23 adjoins the pumping chamber 4 beyond the outlet valve 6. This dispensing tube 23 is moved vertically downwards together with the insert part 9 when pressure is applied to the dispensing head 2 in order to reduce the volume of the pumping chamber 4 in order to dispense mass. The dispensing tube 23 has an outlet opening 24 at its upper end. Further, the eyed tube 23 is surrounded by a peripheral this closure portion 25 of the dispensing head 2 in the upper region. The closure portion 25 merges in vertical directions below into a dispensing head dispensing tube 27 having an orifice 28 associated with the dispensing tube 23. When vertical raising the dispensing head 3, the mouth 28 comes to cover the outlet opening 24 in overlap. Thus, a Abschieberung, in the lowered state of the dispensing head 3, the outlet opening 24 is realized by the closure portion 25 as it were. The dispensing tube 23, except possibly with a pumping movement, then but in quasi-rigid coupling to the dispensing head dispensing tube 27, does not need to move. Due to the stable position of the dispensing head in the vertically extended state, namely in the embodiment achieved by a horizontal portion 29 of the link 21, and possibly a horizontal portion of the link 10, on which then the sliding block 22 and 11 acts, can by depressing the dispensing head 3rd be made a pumping movement, in which case, in the configuration of Fig. 6 , Mass from the pumping chamber 4 through the dispensing tube 23, the opening 24, the mouth 28 and the dispensing head dispensing tube 27 can emerge from the dispensing mouth 30.

It is advantageous here that an end face region 31 of the dispenser head part 2 can be designed to be closed vertically below the dispensing mouth 30, since the dispensing mouth 30 only moves circumferentially offset thereto, despite the protruding section 32 only into this wall region 31, see also comparison of FIGS FIGS. 1 and 2 ,

Incidentally, the dispenser is designed in accordance with the dispenser, as in the aforementioned WO 2009/127651 A1 is described. In this regard, the disclosure of said WO document is hereby incorporated in full content in the disclosure of this application, also to include one or more features of said WO-font in claims of the present application.

The dispensing tube 23 is closed at its end facing the dispensing head 3 by a substantially horizontal end wall 34. The dispensing head dispensing tube 27 forming part also forms on both sides, in the vertical direction, the mouth 28, a guide portion 35 above the Mouth 28 and a guide portion 36 below the mouth 28 from. Opposite to the mouth 28, a through hole 37 is formed in this part. This is used for latching connection with a of a ceiling portion 38 of the dispensing head 3 inside downwardly projecting connector 39. In addition, the dispensing head dispensing tube 27 is partially formed in the aforementioned part and partly in the part 38 of the dispensing head 3 which also forms the wall 38. When retracted, see Fig.1 , a planar connection of the outer surface of the wall 38 with the end face region 31 of the dispenser head part 2 is preferably provided.

The area forming the dispensing nozzle 30, opposite the otherwise circular area of the dispensing head 3, but in any case with respect to a connecting wall 41, protruding portion 32 is retracted into a retraction opening 40 of the donation head part 2. The retraction opening 40 is formed in the wall portion 31.

As an alternative to the embodiment given, directly matching connection position between the contour of the section 32 and the corresponding opening contour of the retraction opening 40, the retraction opening 40 may be formed in the circumferential direction, at least in its radial portion, with such a distance to the section 32 that a sloping surface training on the section 32 and / or the retraction opening 40 is not required (although it may be provided).

LIST OF REFERENCE NUMBERS

1

donor

2

Donor headboard

3

dispensing head

4

pumping chamber

5

intake valve

6

outlet valve

7

pantry

8th

sleeve part

9

insert

10

Verstellkulisse

11

cam

12

sleeve part

13

holding part

14

valve element

15

receiving chamber

16

Return spring

17

vertical guide

18

Counter-guide part

19

Positive locking entrainment

20

recess

21

link guide

22

sliding block

23

discharge tube

24

outlet

25

closure portion

26

27

Dispensing head-discharge tube

28

Mouth / cross section

29

Horizontal section

30

dispensing opening

31

End face region

32

section

33

head Start

34

end wall

35

guide section

36

guide section

37

Through opening

38

Ceiling area / wall

39

connector

40

entry opening

41

connecting wall

u

Opening supernatant

H

height difference

Claims (6)

1. A dispenser (1) for dispensing liquid or pasty substances, with a dispensing head (3) having a dispensing mouth (30), and with a reservoir (7) and a dispenser head part (2), the dispensing head (3) being movable relative to the dispenser head part (2) by a rotational movement of the dispenser head part (2) from a dispenser stand-by position into a lowered position and vice versa, characterized in that the dispenser head part (2) moves the dispensing head (3) in and out only axially, the dispensing head (3) being connected in a rotationally locked manner to a stationary part of the dispenser.
2. The dispenser according to claim 1, characterized in that the dispenser head part (2) has a retraction opening (40) for the dispensing mouth (30) of the dispensing head (3), which dispensing mouth (30) projects at least partially relative to an engaging wall (41), and which retraction opening has delimiting surfaces for a movement of the dispensing mouth (30) relative to the dispenser head part (2), said delimiting surfaces running obliquely to a vertical.
3. The dispenser according to one of the preceding claims, characterized in that the dispenser head part (2) is rotationally locked relative to the dispenser reservoir (7) and/or a pump chamber (4).
4. The dispenser according to one of the preceding claims, characterized in that a sleeve part (8) that is, rotatable relative to the dispenser reservoir (7) and/or the pump chamber (4) acts on the dispensing head (3) for a vertical movement.
5. The dispenser according to Claim 4, characterized in that in the course of the rotation, the sleeve part (8) performs an axial movement.
6. The dispenser according to one of the preceding claims 4 or 5, characterized in that the sleeve part (8) is driven by an external rotational part that moves only horizontally.

Images