CN1128523A - Dispenser, in particular for pasty substances - Google Patents

Abstract

The invention relates to a distributor which is especially applicable to pasty matter. The distributor comprises a supply container that is replaceable and can be emptied through torsion, a distributor sleeve, an open end and a retaining part that is positioned at a first end of the distributor sleeve and is rotatable. The retaining part is separably combined with the bottom end of the supply container; furthermore, the open end area of the supply container is installed on the distributor cover in a nonrotating way; meanwhile, the retaining part comprises at least a guiding device which ensures that the bottom of the supply container is inserted into the distributor cover when the supply container is inserted into the distributor cover, and the bottom in the distributor sleeve keeps nonrotating and can move freely along axial direction on the retaining part.

Description

Dispensers, especially of pasty substances

The present invention relates to a dispenser, particularly a dispenser for pasty substances, comprising a replaceable supply container, preferably a bladder-type supply bag, comprising a thin The foldable wall, open end and reinforced bottom end.

Such a dispenser is disclosed for example in EP-A2-219750. Evacuation is done in this distributor by pressurization in the axial direction. Such dispensers are still considered relatively complex in terms of their emptying mechanism. It has also been shown that, when emptying with pressure, the supply bag can only be completely emptied with great effort.

The object of the present invention is then to provide a dispenser, in particular for pasty substances, comprising a simple supply bag which can be emptied without complicated mechanisms. In addition, the supply bag can be almost completely emptied.

The above objects can be achieved according to the features in the patent claims of the present invention.

As can be seen from the example given, the dispenser has a retaining portion which can rotate about a longitudinal axis passing through the open end and the bottom end of the supply container or bag, cooperating with the positive movement of the bottom end of the bag And a twist supply bag, wherein the supply bag is mounted in a non-rotatable manner in the region of the open end of the dispenser. According to the dispenser with a supply bag proposed by the present invention, it can force out the contents of the bag from the open end of the supply bag by means of a twisting movement from the bottom to the top, these contents are especially pastes , such as toothpaste, vinaigrettes, ketchup, etc., but also solid substances such as deodorant sticks. In one embodiment of the invention, the bottom end of said supply bag is rigidly connected to said retaining portion. Such a simple rigid connection could for example be inserted from the top, it need only involve rotation of the bottom end relative to the open end of the supply bag. Such a rigid connection can also be designed as required. Furthermore, in a preferred embodiment, the bottom end of said supply bag is axially movable within a retaining portion within the dispenser housing. Depending on the material used, the supply bag typically shortens as the twisting or twisting movement takes place. Since the bottom end can move axially in the holding portion, the supply bag can be shortened in the axial direction while maintaining a rigid connection with the holding portion. The above-mentioned bottom end, for example, may take the shape of a polygonal rod, which is considered to be a suitable design for the bottom end of the supply bag. Here, for example, a square or a hexagon is ideal. The rod can be solid, but it is better to take a hollow structure in order to reduce weight or reduce material consumption. Corresponding to the bottom end of the supply bag, the holder of the dispenser includes a polygonal socket, designed according to known hexagonal wrenches. The open end of said supply bag also preferably includes a flap having external rigid coupling means for non-rotatable mounting within the dispenser sleeve. In addition, it may also take the form of non-rigid binding. In this way, the bottom end can be twisted relative to the open end of the supply bag without simultaneously rotating the open bag. As far as the design of the supply bag is concerned, it is also preferred that such a supply bag essentially consists of plastic film, for example in cylindrical extruded form. For this purpose, preferably very thin plastic films are used, but multilayer plastic films can also be used. Alternatively, the supply bag may consist of several plastic parts joined together, preferably by welding. Additionally, the bottom end of the supply bag is ideally injection molded onto the aforementioned plastic film. Details in this regard can be found in German Patent Application No. P4321275.1, the entire contents of which have been disclosed in this application. It is also possible to attach the above-mentioned flap, for example in the form of a hinged closure, to the extruded film by injection molding. Relevant details can refer to above-mentioned patent application. Finally, there is another preferred design for the supply bag to include a conical zone in the region of the bottom end for determining the initial profile in twisting. The smallest cross-section of the filled supply bag provides the least resistance during twisting, so that it begins to collapse when a corresponding moment is applied to the supply bag.

The invention will be further elucidated below with reference to the accompanying drawings, which show embodiments only by way of example. In the attached picture:

Figure 1 is a side view of the dispenser of the present invention;

Figure 2 is a top view of the dispenser in Figure 1;

Fig. 3 is a cross-sectional view of the distributor in Fig. 1 taken along line III-III in Fig. 2;

Fig. 4 is another cross-sectional view of the dispenser in Fig. 1 taken along line IV-IV in Fig. 3;

Fig. 5 is a cross-sectional view of the dispenser in Fig. 1 taken along line V-V in Fig. 3;

Figure 6 shows a cross-sectional view of the dispenser of Figure 3 with a partially twisted supply bag;

Fig. 7 shows the cross-sectional view of the distributor in Fig. 1 taken along line VII-VII in Fig. 6;

Figure 8 shows another embodiment of the dispenser of Figure 1 in the form shown in Figure 3, including a coil spring for torque transmission;

Figure 9 is similar to Figure 8 but includes an elongated coil spring and partially twisted supply bag;

Figure 10 shows a cross-sectional view of another embodiment of the present invention;

Figure 11 illustrates the embodiment of the invention of Figure 10, but without the supply bag and cover;

Figure 12 shows the embodiment of the invention of Figure 10 in the dispenser position;

Figure 13 is a detailed view of the embodiment of the invention in Figure 12 as it returns to the waiting position;

Fig. 14 is a cross-sectional view of another embodiment of the present invention;

Figure 15 shows the embodiment of the invention in Figure 14 prior to insertion into the supply bag; and

Figure 16 shows the embodiment of the invention of Figure 14 with the supply bag twisted.

Referring first to FIG. 1, a dispenser 1, for example for dispensing a material such as toothpaste, will be described. Referring to FIG. 3 , the dispenser 1 comprises a replaceable supply bag 2 housed in a dispenser sleeve 3 . In detail, the supply bag is in the form of a bladder comprising a thin foldable wall portion 2a. In addition, the supply bag 2 comprises an open end 4 and a bottom end 5 . This bottom end 5 has a rectangular cross-section as shown in FIG. 5 .

Furthermore, the above-mentioned bottom end comprises a rod section 6 and a transition zone 7 . The transition zone 7 is connected to the film wall 20 of the supply bag. It can be seen from the figure that this transition zone 7 has a narrow waist shape compared to the average cross-section of the supply bag, for example in the area of line IV-IV in FIG. 3 .

The aforementioned rod segments 6 are located in the holder 8 of the dispenser 1 . The retaining portion 8 is rotatable about a longitudinal axis passing through the open end 4 and the bottom end 5 of the supply bag. Since the rod section 6 is rigidly integrated in the holding part 8, as shown in FIG. 6, when the holding part 8 is rotated, the supply bag is twisted.

As the supply bag is twisted progressively, the bottom end 5 and in particular the rod section 6 moves upwards, as can also be seen in FIG. 6 . The aforementioned upward axial movement is provided for in the freely recessed orifice of the retaining part 8 in the upward direction.

The open end 4 includes an outer locking cam 10 which cooperates with a recess 22 (see Figure 4) in the dispenser wall or sleeve 3. The latter prevents the open end 4 from turning relative to the distributor sleeve 3 . In this way, when the holding part 8 of the distributor 1 is rotated, the required rotation of the supply bag can be achieved.

The above-mentioned open end 4 also includes in particular a conical portion 11 integrally formed with the cylindrical section 12 . The cylindrical section 12 is attached to the extruded plastic film 2a. In the direction of the opening, there is a dispensing opening 13 following the conical section 11 .

The holding portion 8 is connected in a non-rotatable manner (for example by adhesive) to an operating member 14 of bottle-shaped section, which interacts with the dispenser 3 by means of a ratchet mechanism.

The ratchet mechanism described above is shown in detail in FIGS. 5 and 6 . Said actuating member 14 comprises two spring arms 15 which engage in two axially arranged recesses 16 in the dispenser. When the operating member 14 is rotated, the spring arm 15 will bypass the cam 18 due to the effect of the ramp 17 (turning in the direction indicated by the arrow). When turned against the direction indicated by the arrow, a blockage occurs and the supply bag 2 can be discharged as required.

It can also be seen from FIG. 9 that the outer side of the manipulation member 14 is knurled for easy gripping. In addition, the actuating member 14 is mounted axially in the distributor wall 3 by means of a peripheral ring of grooves 19 .

As an alternative to the ratchet mechanism shown, it is possible for the operating member 14 to interact with the dispenser wall 3 only by frictional engagement. Such an embodiment is also suitable if the frictional engagement is selected to be strong enough so that the operating member 14 cannot be reversed by the restoring force of the supply bag.

8 and 9 relate to another embodiment of the holder 8 . In these two figures, the holding part 8 comprises a coil spring 20, which comprises a plurality of substantially vertical transverse members for transmitting torque, the transverse members 21 of which are arranged to hook each other into a zipper form (relative to the coils of the coil spring described above one above the other). In this way, the coil spring is able to move longitudinally in height with the bottom end simultaneously with the gradual twisting of the supply bag without losing its ability to transmit the required torque. It is therefore not necessary to form the bottom end 5 of the supply bag to a certain matching length (rod section 6). Figure 9 shows that the supply bag has been shortened somewhat. The upper end of the above-mentioned coil spring 20 rests on a rotation stop in the bottom of the supply bag 2, while its lower end is fixed on the operating member 14, these details are not shown.

FIG. 10 shows another embodiment of the dispenser according to the invention, in which the twisting of the supply bag 2 is achieved by the aforementioned sleeve wall 3 exerting an axial pressure on the bottom 29 against the pressure spring 30 . In this embodiment, a screw 32 is screwed onto a nut 31 on the bottom 29 . At position 24c, the aforementioned screw 32 is fixed to a rotating sleeve 24 on which is mounted a detent 26 associated with the supply bag 2 movable in the axial direction. Rotation of the screw 32 by rotation of the rotation sleeve 24 and detent 26 thereby causes the supply bag 2 to twist. The supply bag 2 is then shortened causing the catch 26 to move upwards within the rotating sleeve 24 .

The dispenser in FIG. 10 includes a cap 22 . In the upper part of the supply bag 2 there is a flange 27 with an inclined lateral outlet tube 13 . The outlet tube 13 fits in corresponding openings of the cover 22 and the dispenser sleeve 3, thus preventing the bag flange 27 from turning inside the dispenser. In the waiting position of the dispenser 1 shown in FIG. 10 , the opening of the outlet pipe 13 is closed by a flap 23 . This flap 23 is connected via a hinge to a fastening ring 25 of the distributor sleeve 3 and is guided through an opening 3b of the distributor sleeve 3 .

FIG. 11 shows an embodiment of the present invention without supply bag 2 and without top cover 22 of FIG. 10 . The ring 25 is preferably secured to the base 29 by three bars 28 arranged at 124° angle intervals on the circular section of the dispenser, preferably 12 mm wide. The latch bar 28 includes lugs 34 which, in the waiting position, hold the dispenser sleeve 3 against the bottom 29 under the pressure of the aforementioned spring 30 . The aforementioned rotating sleeve 24 is also shown in the figure. The latter includes a slot 24a into which the end of a rod-shaped detent 26 is inserted via an insertion ramp 24b.

Fig. 12 shows the embodiment of Fig. 10, wherein the distributor sleeve 3 can limit the force of the bottom 29 against the spring 30 when pushed. During this process, the screw 32 is screwed into the nut 31, causing the supply bag 2 (not shown in this figure) to rotate. The threads of the above-mentioned screws and nuts have a large pitch, preferably 100 mm per revolution. The height of the rise represents the dosage of the ingredients, so that this height of the rise corresponds to the material to be dispensed. Pushing down on the dispenser sleeve 3 causes the flap 23 to move relative to the retainer ring 25 set firmly on the bottom 29 . The orifice 3b is moved downwards, and the flap 23 is moved away from the orifice of the outlet pipe 13, allowing the material to be released from the supply bag 2. On the other hand, when the pressure is no longer applied, the dispenser sleeve 3 returns to the waiting position and comes into contact with the nose 34 of the latch bar 28 as a result of the spring 30 being biased. At the same time, the flap 23 on the orifice 3b is lifted up again to close the outlet pipe 13 .

FIG. 13 shows the embodiment of FIG. 12 just after the spring 30 has been released. The nut 31 is rigidly combined with the bottom 29 only in the horizontal direction. The nut is then still screwed onto the screw 32, while also pushing up the spring 30. The nut 31 is unscrewed again by its own weight from the screw 32 and falls back onto the bottom 29 where it is again rigidly engaged with the protrusion 31a in a corresponding recess 29a of the bottom. In this way, the waiting position in Fig. 10 is returned again, and the aforementioned twisting operation can be continued by applying additional pressure to release more material from the dispenser.

Figures 14 to 16 illustrate yet another embodiment of the present invention, which is particularly suitable for stick products having a rather solid consistency, such as certain deodorant sticks, sticky sticks or crayons. In this embodiment, the supply bag 2 is connected to a cover 14a by means of a rotatable operating member 14 through telescopic sleeve-type holding devices 35, 36 which allow the lower end of the supply bag to move vertically when twisted.

FIG. 14 shows a further embodiment of the dispenser 1 according to the invention in the standby position with a closure cap 39 on the dispenser sleeve 3 and the seal 40 . The supply bag 2 is mounted in rigid connection by means of a flange 27 to a dispenser, preferably of oval cross-section. The lower end of the supply bag 2 includes a detent 26 which fits into a detent sleeve 36 with a hook 26a. In the waiting position before the dispenser is operated, the hook 26a enters the catch housing slightly to compensate for any tolerances in the supply bag and/or filling size. The catch 26 is welded to the bag 2, with a stabilizing member 26b entering into the supply bag 2, whereby it comes into contact with the material 41, stabilizing the catch in place. The manipulating member 14 is rotatable by a boss 14b behind the protrusion 3a of the distributor cover 3, and preferably has a slightly elastic fit. This prevents the supply bag 2 from not twisting. A certain impermeability can be achieved in the actuating element 14 by slightly bending the transition region between the actuating element 14 and the distributor sleeve 3 .

In the embodiment of the invention of Fig. 14 shown in Fig. 15, the closure has not been affixed and the supply bag has not yet been mounted on its retaining part. Before the bag 2 is inserted, it is preferably covered with a tamper-proof sealing layer 42 (film part), which is torn off when the bag 2 is inserted. The catch 26 is inserted into a star-shaped ring gear 36a in the catch sleeve 36 by means of the hook 26a, and the hook 26a reaches beyond the position of the ring gear 36a as shown in FIG. 14 .

FIG. 16 shows that the embodiment of the present invention in FIG. 14 is in the twisted terminal position of the supply bag 2, that is, the position when the material 41 is completely extruded. At the beginning of the twisting process, the pawl 26 lifts and the hook 26a engages underneath with the star gear 36a. During this process, the telescopic sleeve 35 and the detent sleeve 36 gradually move up to the limit stop 38 in the slot 37 .

The embodiments of Figures 1 to 16 show that the supply bag 2 is all tapered at its bottom to predetermine the best position for twisting to begin with. In a preferred embodiment, the dispenser consists essentially of plastic.

The features of the invention disclosed in the above description, in the drawings and in the claims are essential for realizing the invention individually or in any combination. All features disclosed herein are essential to the invention.

Claims (36)

CLAIMS 1. A dispenser (1) especially suitable for pasty substances, comprising a replaceable supply container (2), wherein the supply container 2 can be emptied by twisting. 2. Dispenser according to claim 1, characterized in that said supply container is a supply bag (2) in the form of a bladder comprising a foldable thin-walled portion (2a), which also includes a open end (4) and a bottom end (5) comprising a forceful member adapted to transmit torque; said distribution member (1) comprising a retaining portion (8) which can be A longitudinal axis of the bag (2) extending through the open end (4) and the bottom end (5) rotates; at the same time this retaining part (8) interacts with the aforementioned forcing member in the bottom end (5) of the supply bag (2) The twist supply bag (2) is mounted in the dispenser (1) in a non-rotatable manner in the region of the above-mentioned open end (4). 3. The dispenser according to claim 2, characterized in that the bottom end (5) is mounted in the holding part (8) in a rigid combination. 4. The dispenser according to any one or several of the preceding claims, characterized in that the bottom end (5) can move in the holding part (8) in the axial direction. 5. The dispenser according to any one or several claims above, characterized in that: the bottom end (5) is in the shape of a polygonal bar (6). 6. The dispenser according to any one or several of the above claims, characterized in that the holding part (8) includes a polygonal socket corresponding to the bottom end (5) of the supply bag (2) . 7. The dispenser according to any one or several of the preceding claims, characterized in that: the open end (4) comprises a flap with a rigid coupling (10), which is connected to the dispenser The sleeves (3) interact to form a non-rotatable mounting. 8. Dispenser according to any one or several of the preceding claims, characterized in that said supply bag (2) consists essentially of several plastic film parts (2a), which are preferably interconnected by welding. 9. Dispenser according to any one or several of the preceding claims, characterized in that said flap is injection molded onto said plastic film (2a). 10. Dispenser according to any one or several of the preceding claims, characterized in that said bottom end (5) is injection molded onto said plastic film (2a). 11. Dispenser according to any one or several of the preceding claims, characterized in that the supply bag (2) comprises a conical transition zone (7) in the region of the aforementioned bottom end (5) for to predetermine the starting section in twisting. 12. The dispenser according to any one or several of the above claims, characterized in that: the supply bag (2) is screwed into a nut (31) by a screw (32), under axial pressure Or reverse under the influence of traction. 13. The dispenser of claim 12, wherein: (a) the aforementioned supply container is a supply bag (2) in the form of a bladder comprising foldable thin walls (2a) and is rotatably mounted in said dispenser (1) in the following manner; (b) said supply bag (2) includes a detent (26) at its lower end; (c) said supply bag (2) is rotatably guided in a rotating sleeve (24) by said detent (26); (d) the lower end of the above-mentioned rotating sleeve (24) is connected with the aforementioned screw (32); (e) said nut (31) is guided in a guide cylinder (33); and is rigidly combined with the bottom (29) of the distributor (1) along the horizontal direction; (f) the aforementioned rotating sleeve (24) is accommodated in the distributor cover (3); (g) The distributor sleeve (3) is elastically displaced relative to said bottom (29) by a compression spring (30); in (h) twisting of the supply bag (2) occurs under pressure of the dispenser sleeve (3) relative to the base (29), and (i) When the aforementioned spring (30) was released, the nut (31) was first lifted by the screw (32) and disengaged from the bottom (29), and then fell back to the bottom (29) by its own weight and the screw (32). 29) on the starting position. 14. Dispenser as claimed in claim 13, characterized in that said supply bag (2) comprises a lateral outlet pipe (13) arranged at a flange (27), which outlet pipe (13) leads to Pass through an opening in the distributor cover (3) and cover (22). 15. Dispenser according to claim 14, characterized in that said supply bag (2) is non-rotatably mounted in the dispenser (1 ) by means of said outlet pipe (13). 16. Dispenser according to any one of claims 12 to 15, characterized in that, in the waiting position, said outlet duct (13) is closed by a flap (23). 17. The dispenser according to claim 16, characterized in that: the above-mentioned flap (23) is arranged to be fixed between the aforementioned rotating sleeve (24) and the dispenser sleeve (3) by a plurality of latch bars (28). The rings (25) on the bottom are connected and at the same time this flap (23) leads through the orifice (3b) on the distributor sleeve (3) so that the flap (23) opens when the sleeve (3) moves upwards, and at the same time The aforementioned spring (30) loosens and closes again. 18. Dispenser according to claim 17, characterized in that there are three said latches (28) with an angular distance of 120° between any two of them. 19. The dispenser according to claim 17 or 18, characterized in that in the waiting position of the dispenser (1), the dispenser cover (3) is under the pressure exerted by the spring (30) for the aforementioned latch (28) ) The protrusion (34) remains on the bottom (29). 20. Dispenser according to any one of claims 13 to 19, the aforementioned detent (26) being introduced into a groove (24a) of said rotating sleeve (24). 21. Dispenser according to claim 20, characterized in that said rotating sleeve (24) comprises an insertion ramp (24b) for said detent (26). 22. Dispenser according to claim 1, characterized in that the supply container (2) is held telescopically displaceable on a rotatable operating member (14). 23. The dispenser of claim 22, wherein: (a) the aforementioned supply container is a supply bag (2) in the form of a bladder comprising foldable thin walls (2a) and mounted in said dispenser (1) in a non-rotatable manner; (b) said supply bag (2) includes a detent (26) at its lower end; (c) The detent (26) is integrated into a detent sleeve (36), the latter is connected with the aforementioned manipulation member (14) through a telescopic sleeve (35) and can be positioned relative to the sleeve (35). ) is axially displaced; and (d) Said operating member (14) is preferably held behind a projection (3a) of the distributor sleeve (3) in a slightly elastic rotatable manner by a boss (14b). 24. Dispenser according to claim 23, characterized in that said supply bag (2) is held in rigid connection with a flange (27) inside the dispenser sleeve (3). 25. Dispenser according to claim 24, characterized in that the dispenser sleeve (3) has an oval cross-section. 26. Dispenser according to any one of claims 22 to 25, characterized in that the dispenser is closed in the waiting position by a cover (39) comprising a seal (40). 27. Dispenser according to any one of claims 22 to 26, characterized in that said catch (26) comprises a stabilizing member (26b) which protrudes into the supply bag (2) and Material (41) contacts in the bag. 28. Dispenser according to any one of claims 22 to 27, characterized in that the detent (26) is a spider tooth (36a) fitted to the detent sleeve (36) by means of a hook (26a) )Inside. 29. Dispenser according to any one of claims 22 to 28, characterized in that the bottom end of the supply bag (2) is tapered. 30. The dispenser of any one of claims 1 to 29, wherein the dispenser is formed substantially of extruded plastic. 31. A supply bag for a dispenser (1), in particular for pasty substances, preferably for a dispenser according to any one of claims 1 to 30, comprising a supply container area, an open end (4) and a bottom end (5), wherein said bottom end (5) includes a mandatory member, and said open end (4) includes a rigid and non-rigid combination for supply A component that holds the bag into the dispenser. 32. Supply bag according to claim 31, characterized in that the bottom end (5) takes the form of a polygonal bar (6) or catch (26). 33. The supply bag according to any one or several of the preceding claims, characterized in that the vast majority of the supply bag (2), ie the part in its supply area, comprises several plastic film parts (2a) , which are preferably connected to each other by welding. 34. Supply bag according to any one or several of the preceding claims, characterized in that said open end (4) comprises a flap or flange (27) injection molded onto said plastic film (2a) . 35. Supply bag according to any one or several of the preceding claims, characterized in that said bottom end (5) is an injection molded plastic part, preferably injection molded or welded to said on the plastic film (2a). 36. The supply bag according to any one or several of the preceding claims, characterized in that the supply bag (2) comprises a tapered transition zone (7) in the bottom end (5) for predetermined The starting cross section in torsion.

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