EP3212333B1 - Stocking device and method for removing a product - Google Patents

Description

The invention relates to a storage device for storing and dispensing products with a structure, formed essentially from a container for storing product and a dispensing device, as well as an actuating mechanism having an actuating lever for activating and / or metering the product removal from the container by the dispensing device, wherein the actuating lever can be pivoted between a first pivot position and at least one second pivot position by means of a pivot device.

The invention also relates to a method for removing product from the storage device.

In order to be able to partially or completely remove a product stored in a container, various concepts have been implemented, which are based on the criteria of safe and controlled handling for removal, the type and consistency of the product, the shape and the state of aggregation in which the respective Product is storable, as well as based on the storage conditions.

The products that are very often stored in a container are liquids. In many cases, the liquid product should be dispensed as an aerosol, i.e. as a mist of droplets in a gas. Examples include spray paints, deodorants, hair sprays, adhesives, disinfectants and air fresheners. Stocking takes place in these cases in aerosol dispensers, which have a pre-filled, gaseous propellant in order to put the contents of the container under pressure and to dispense the product as an aerosol in the form of a spray when an actuating device is triggered by the user.

Aerosol dispensing systems are often preferred to hand operated pumping systems that are not biased by a pressurized propellant because these systems dispense a continuous spray of product with little power required to dispense and facilitate easy adjustment of product dispensing and typically, due to the higher pressure, produce finer sprays than the manually operated pump systems can realize.

In addition to storing liquid products, storage devices can also store other flowable substances or solid products in particle form. The possible uses of aerosol dispensers are always opened up when the product is suitable for being able to be present as a dispersion in a gas or is transportable within a volume flow. These conditions usually apply to the aforementioned liquid products. Other product aggregate states or properties such as thixotropic substances or creams, shaving foam or dispersed solid particles such as graphite-containing lubricants can also be stored and dispensed under pressure conditions In these cases it is no longer possible to speak of a product dispensing in the form of an aerosol.

The basic structure of an aerosol dispenser essentially comprises three components: the container for storing product and, if necessary, propellant, a dispensing device for the controlled removal of product and the actuation mechanism required for the dispensing device. If the container is designed as a pressure vessel and if the storage is realized under pressure by, for example, a propellant gas, a valve is practically always provided as a dispensing device. For example, describes the US 2631814 A a suitable valve structure for the stated purpose.

If, according to this prior art, the actuating mechanism in the form of a spray head is pressed, the valve is opened and the product flows under the action of the propellant gas pressure from the container through the valve and the spray head into the environment. Depending on the pressure, propellant gas content and viscosity of the product, a spray jet or an aerosol is created.

In order to simplify handling and improve the design, various modifications have been made to the spray head according to the prior art, mostly while maintaining the preferably lateral spray direction. A lateral spray direction is generally understood to mean a product delivery direction that is radial with respect to the container center axis.

The spray head often has a separate protective cap in order to protect it from inadvertent actuation. Other ways of preventing unintentional actuation have been found by using a stop function of the spray head that is dependent on the rotation position or by arranging the spray head in a housing below the plan, so that actuation is only possible by reaching into or pressing the spray head into a housing pocket.

In addition to the type and manner of the actuation mechanism, the handling is also dependent on the desired direction of removal of the product in connection with the Direction of spray of the spray head determined. For example, in order to apply a deodorant from the aerosol dispenser under the armpit, on the one hand the container has to be grasped with the hand and on the other hand a finger acting as an actuator, preferably with the index finger or thumb, has to be placed on the spray head as an actuating mechanism for the valve be pressed. Before operating the mechanism, it is necessary that the aerosol dispenser with the spray head is aligned accordingly.

In addition to the radial product delivery direction with respect to the container center axis by a laterally aligned spray head, product delivery directions aligned with the container center axis, ie axial product delivery directions, are also implemented in the prior art. This is the case, for example, with air freshener products - for these dispensing heads have been developed that spray vertically upwards and in the axial direction of the container. Such a construction is in the US 20060118658 A1 described.

As an operating mechanism that is alternative to the spray head, FIG EP 1 608 571 B1 describes an aerosol dispenser with a product delivery direction in the axial direction aligned with the container center axis, which has an actuating lever arranged to the side of the dispenser. In order to prevent the handling risk of unintentional actuation, provision is made for an actuation lock to be activated or deactivated in each case by a rotary cap. This lock is of particular importance because the actuating lever always protrudes beyond the contour of the aerosol dispenser base structure, both in its rest position and when the maximum actuating lever travel is reached. Without the actuation lock, product removal would be possible at any time and therefore also in an uncontrolled or unintentional manner.

In the U.S. 4,278,187 A describes a storage facility for storing and dispensing products. The product is stored in a container and a dispenser with an operating mechanism is provided. The actuation mechanism has an actuation lever and the actuation lever is pivotable.

Further storage devices with dispensing devices and operating mechanisms with operating levers are also in the DE 10 2009 044280 A1 , the U.S. 4,132,359 A , the EP 2 060 507 A2 as well as the US 2006/113329 A1 described.

In the GB 2494179A an actuatable metering device is described.

The implementation of the actuation device in the form of a lateral actuation lever has established itself in terms of haptics, ergonomics of the grip and dosage of the product dispensed quantity. However, the design of the lever and the laterally protruding element via the contour of the aerosol dispenser result in a number of disadvantages.

The disadvantage is that the lever is exposed to an increased risk of breakage due to the position as a lateral projection. In particular during transport and handling prior to the actual product removal by actuating the lever, there is a massively increased risk that the lever is laterally deflected or loaded beyond its load limit and breaks off due to collisions.

According to the prior art, it is particularly disadvantageous that unintentional actuation, for example when the container is being transported, is possible with a lever that is constantly protruding to the side. There is thus both the risk of damage to the lever and the risk of inadvertent product delivery through actuation of the lever.

Furthermore, the compact structure of the container with cap is interrupted by the operating lever. This makes handling more difficult even when the container is filled with propellant gas and / or product. In most cases, such storage facilities are provided for receiving consumer products and must therefore be mass-produced and filled or packaged. For this purpose, filling machines are used, which are usually geared towards cylindrical, often also rotationally symmetrical, structures. Dispensers with laterally protruding actuating levers often cannot be filled on such machines. However, the filling process generally proves to be relatively uncritical because According to a common embodiment, the cap with the lever is only placed on the container after filling. However, the implementation of the packaging process is critical, since the asymmetry caused by a laterally protruding lever necessitates additional alignment of the containers during packaging and / or larger outer packaging.

It is therefore the object of the invention to provide an actuating mechanism for a dispensing device of a container using an actuating lever which reduces or overcomes the disadvantages of the prior art as described above.

According to the invention, this object is achieved by the features of claim 1.

The invention recognizes that the disadvantages of the prior art can be overcome by a pivotable actuating lever in that this is integrated in a pivoted position in the structure or outer contour of the storage device and in a second pivoted position offers the possibility of actuating the Lever to trigger the product removal and, or to dose.

Furthermore, the invention realizes a safeguard against unintentional removal of the product in a bifunctional and very reliable construction within the framework of an integrated construction. In the first pivoted position of the actuating lever and thus in the position integrated into the structure or outer contour of the storage device, the geometries are constructed in such a way that the actuating lever cannot be deflected for the purpose of removing the product. The invention thus fulfills the functional requirements of integrating the lever into the storage device structure and at the same time provides the necessary safeguard against inadvertent activation of the actuating mechanism in this pivot position of the actuating lever in a bifunctional manner, The actuating lever can be pivoted both by an isolated pivoting movement of the actuating lever and by pivoting the entire actuating mechanism, preferably an isolated pivoting movement of the actuating lever by a pivoting device is envisaged, which can take place in a rotary or radial-translational manner with respect to the central longitudinal axis of the storage device .

By pivoting the actuating lever into a position in which it is integrated into the structure of the storage device, the risk of the actuating lever breaking off is eliminated and any handling situation within machine filling, transport, storage conditions in general or between the individual product removal times is improved and supported . The interaction with the integrated actuation safeguard against unintentional removal of the product results in maximum safety and user-friendliness for the user.

In summary, the construction according to the invention can be defined in that the lever in the basic position or in the position not intended for active actuation is integrated into the outer contour of the container with cap and does not protrude from this contour.

The lever is preferably guided out of the outwardly protruding operating position by turning the spray head. The construction according to the invention can be used for cylindrical containers and / or containers with a non-circular cross-sectional area. The conversion of a rotary movement of the spray head into an intended positioning of the lever is preferably carried out by means of one or more control cams.

A preferred application of the construction is for the delivery of cosmetic products and / or perfumery. In principle, however, any liquid products can be dispensed in a defined manner using the construction according to the invention.

Fig. 1

einen Querschnitt durch ein perspektivisches Modell der Bevorratungseinrichtung (10),

Fig. 2

eine Schnittdarstellung der Bevorratungseinrichtung (10) mit einem Betätigungshebel (310) in einer Schwenkstellung,

Fig. 3

eine perspektivische Ansicht eines beispielhaften, rotationssymmetrischen Modells der Bevorratungseinrichtung (10),

Fig. 4

eine weitere perspektivische Ansicht eines beispielhaften, rotationssymmetrischen Modells der Bevorratungseinrichtung (10),

Fig. 5

die perspektivische Ansicht eines Ausschnittes der Ausgabevorrichtung (100) mit Elementen des Betätigungsmechanismus (300) und der Schwenkvorrichtung (400),

Fig. 6

einen Querschnitt durch ein perspektivisches Modell der Bevorratungseinrichtung (10) mit einer von Fig. 1 abweichenden Schwenkstellung des Betätigungshebels (310),

Fig. 7

die Schnittdarstellung der Bevorratungseinrichtung (10) in einer zu Fig. 1 um 90° zur Mittenlängsachse gedrehten Schnittebene,

Fig. 8

einen Querschnitt durch ein perspektivisches Modell der Bevorratungseinrichtung (10) in einer zu Fig. 1 um 90° zur Mittenlängsachse gedrehten Schnittebene,

Fig. 9

eine Schnittdarstellung der Bevorratungseinrichtung (10) mit einem Betätigungshebel (310) in einer gegenüber Fig. 2 abweichenden Schwenkstellung,

Fig. 10

einen Querschnitt durch ein perspektivisches Modell der Bevorratungseinrichtung (10) mit einer von Fig. 6 abweichenden Betätigungsstellung des Betätigungshebels (310),

Fig. 11

eine Schnittdarstellung der Bevorratungseinrichtung (10) mit einem Betätigungshebel (310) analog zu Fig. 6,

Fig. 12

eine perspektivische Explosionsdarstellung des der Bevorratungseinrichtung (10),

Fig. 13

eine perspektivische Explosionsdarstellung des der Bevorratungseinrichtung (10) sowie der vergrößerten dreidimensionalen Darstellung der jeweiligen Einzelteile und

Fig. 14

eine perspektivische Darstellung einer abgewandelten Ausführungsform.

Exemplary embodiments of the invention are shown schematically in the drawings. Show it:

Fig. 1

a cross section through a perspective model of the storage device (10),

Fig. 2

a sectional view of the storage device (10) with an actuating lever (310) in a pivoted position,

Fig. 3

a perspective view of an exemplary, rotationally symmetrical model of the storage device (10),

Fig. 4

a further perspective view of an exemplary, rotationally symmetrical model of the storage device (10),

Fig. 5

the perspective view of a section of the dispensing device (100) with elements of the actuating mechanism (300) and the pivoting device (400),

Fig. 6

a cross section through a perspective model of the storage device (10) with one of Fig. 1 deviating pivot position of the actuating lever (310),

Fig. 7

the sectional view of the storage device (10) in a to Fig. 1 cutting plane rotated by 90 ° to the central longitudinal axis,

Fig. 8

a cross section through a perspective model of the storage device (10) in a to Fig. 1 cutting plane rotated by 90 ° to the central longitudinal axis,

Fig. 9

a sectional view of the storage device (10) with an actuating lever (310) in one opposite Fig. 2 deviating swivel position,

Fig. 10

a cross section through a perspective model of the storage device (10) with one of Fig. 6 different operating position of the operating lever (310),

Fig. 11

a sectional view of the storage device (10) with an actuating lever (310) analogous to FIG Fig. 6 ,

Fig. 12

a perspective exploded view of the storage device (10),

Fig. 13

a perspective exploded view of the storage device (10) and the enlarged three-dimensional view of the respective items and

Fig. 14

a perspective view of a modified embodiment.

With regard to the specific exemplary embodiments, the following description relates in part to a delivery of aerosols and thus to containers that contain a liquid and a pressurized gas. Without this being explained again in each individual case, however, all the embodiments also relate, for example, to non-pressurized variants in which, for example, a lotion pump or a bag-in-can system are used. For example, liquids or foams that are not under pressure can also be dispensed.

Figure 1 shows a cross section through a perspective sketch of the storage device (10) in an exemplary embodiment of the invention. The storage device (10) in this exemplary embodiment is a container provided with an internal pressure or a spray bottle with a flowable product stored under pressure and is essentially formed by a container (200) for holding product and propellant as well as a Output unit (500) which is fixed on the container (200) in a pressure-tight manner. Furthermore, the output device (100) is shown including the actuating mechanism (300) and the pivoting device (400).

The dispensing device (100) surrounds the dispensing device elements (300, 400) and the dispensing unit (500) with its housing (110) fixed to the container (200) and the rotating cap (120) which can be moved relative to the housing (110) in a rotational manner. The output unit (500) of this exemplary embodiment according to the invention is formed by a valve unit (510) having a valve body (511), the guide body (512) and the outlet body (513). Other forms of dispensing units can be used with pressureless product storage, for example a pump device that can be activated by the actuating mechanism for pumping out product,

The actuating mechanism (300) for activating and / or dosing the product removal actuates the dispensing unit (500) by means of an actuating rod (321) which is operatively connected to the actuating lever (310) via coupling means (320) and can be moved by the latter. The actuating rod (321) is moved by the actuating lever (310) around a swivel joint (322) in such a way that a linear displacement of the valve unit (510) releases a preferably concentric ring cross-section, via the product into the guide body (512) and the outlet body (513) - in the present example exemplarily in the axial direction - can flow out into the environment.

The coupling means (320) for producing an operative connection between the actuating lever (310) and the actuating rod (321) is formed by a strut with a strut mount, which has joint properties that are releasable and which the forces required for the movement of the actuating rod (321) in the direction and amount can transfer.

The actuating lever (310) is coupled to a pivoting device (400) which enables the actuating lever (310) to be pivoted from a first pivoting position into at least one second pivoting position. In the first The operating lever (310) takes the pivot position in Figure 1 position shown, ie the actuating lever (310) is pivoted into a recess (111) of the housing (110) and thereby integrated into the structure of the storage device (10) so that it has no protruding elements or projections. The pivoting into the at least one second pivoting position takes place by rotating the rotary cap (120) about the central axis of the storage device (10) and the interaction of the elements (401, 402) of the pivoting device (400).

The actuator (402), which is non-rotatably connected to the rotary cap (120), and the coupling (401), which is articulated to the actuating lever (310), enables the generation of a linear movement parallel to the center axis of the coupling (401) and the end of the actuating lever (310) articulated on it. supported by a control cam (403) formed with the actuator (402) in the form of a geometric ramp, so that the actuating lever (310) is pivoted into the at least one second pivot position. The contact point between the coupling (401) and the actuator (402) is designed as a sliding connection and geometrically functionally follows the sliding block principle. The swivel device (400) works like a gear for converting rotary kinematics into translational kinematics. The amount of linear travel is determined by the realized angle of rotation of the rotary (drive) movement and the gradient of the geometric ramp.

Due to the linear movement of the coupling (401) parallel to the center axis and the articulated end of the actuating lever (310), the actuating lever (310) tilts about its articulated contact point with the coupling means (320), so that the grip area (311) is pivoted into a radially projecting actuating position . Only in the actuation position, which corresponds to the at least one second pivot position, is it possible to activate the output unit (500) and to remove product from the container (200).

Figure 2 illustrates a sectional view of the storage device (10) with an actuating lever (310) in a second pivot position and during actuation the valve unit (510) for removing or metering product from the container (200). The actuating linkage (321) is moved out of its non-actuated rest position by the actuating lever (310) so that a linear displacement of the valve unit (510) releases a preferably concentric ring cross-section through which the product flows into the guide body (512) and the outlet body (513). In the Figure 2 If the entire actuation stroke of the actuation lever (310) is not exhausted, the actuation lever (310) with its grip area (311) is in a position between the non-actuated position in which the dispensing unit (500) is completely closed and the stop position in which the Actuating lever (310) is pivoted into the recess (111) of the housing (110).

Figure 3 forms a perspective view of an exemplary, rotationally symmetrical model of the storage device (10). The actuating lever (310) is in the first pivot position, in which it is pivoted into the recess (111) of the housing (110). The prerequisite for the first pivoting position is that the rotary cap (120) has not activated the pivoting device (400) - otherwise the position of the actuating lever (310) shown would be the actuating end position.

Figure 4 shows a further perspective view of an exemplary, rotationally symmetrical model of the storage device (10) in a spatially oblique view from above, so that the guide body (512) and the outlet body (513) can be represented.

Figure 5 forms the perspective view of a section of the dispensing device (100) with elements of the actuating mechanism (300) and the pivoting device (400) in that the rotating cap (120) is not shown.

Figure 6 shows a cross section through a perspective model of the storage device (10) with one of Fig. 1 deviating pivot position of the actuating lever (310). Here the actuating lever (310) is shown in its at least one second pivot position, ie the position after pivoting by the swivel device (400) and still not actuated with regard to a product removal.

Figure 7 comprises the sectional view of the storage device (10) in one to Figure 1 In this view, the section plane rotated by 90 ° to the central longitudinal axis is shown the stop (404) provided on the actuator (402), which limits the travel of the clutch (401) along the control curve (403) and, as a result, the projection of the actuating lever (310) in its at least one second pivot position defined.

Figure 8 shows a cross section through a perspective model of the storage device (10) in a to Fig. 1 The section plane rotated by 90 ° to the central longitudinal axis and corresponds to the view of Figure 7 .

Figure 9 forms a sectional view of the storage device (10) with an actuating lever (310) in one opposite direction Figure 2 deviating pivot position. Here the positioning situation corresponds to that of Figure 1 ,

Figure 10 shows a cross section through a perspective model of the storage device (10) with one of Figure 6 different operating position of the operating lever (310). Here the positioning situation corresponds to that of Figure 2 .

The actuating linkage (321) is moved out of its non-actuated rest position by the actuating lever (310) so that a linear displacement of the valve unit (510) releases a preferably concentric ring cross-section through which the product flows into the guide body (512) and the outlet body (513). In the Figure 10 is like in Figure 2 the entire actuation stroke of the actuation lever (310) is not exhausted, the actuation lever (310) with its grip area (311) is in a position between the non-actuated position in which the output unit (500) is completely closed and the stop position in which the Actuating lever (310) is pivoted into the recess (111) of the housing (110).

Figure 11 shows a sectional view of the storage device (10) with an actuating lever (310) analogous to FIG Figure 6 .

Figure 12 illustrates a perspective exploded view of the storage device (10),

Figure 13 forms a perspective exploded view of the storage device (10) and the enlarged three-dimensional view of the respective individual parts.

The output channel, which has already been mentioned several times, can be designed according to an embodiment variant in such a way that the output opening opens laterally into part (110) or into part (120). The dispensing opening is preferably only released by a rotating component (120). This has the advantage that, for example, when dispensing lotions, the dispensing channel is protected from penetrating dirt or from penetrating oxygen.

In the representation according to Figure 14 an alternative variant is shown. According to this embodiment, the control cam, which specifies the pivoting of the actuating lever, is displaced from the rotary cap (120) onto the actuating rod (321). In this embodiment, the counter bearing of the actuating lever is formed by the guide body (512). By rotating the cap, the actuating lever (310) according to this embodiment only slides along the edge of the actuating rod (321). The actuating lever (310) is pulled towards the guide body (512). As a result, the actuating lever (310) stands up and can be actuated to dispense the product.

Claims (15)

1. Storage device (10) for storing and dispensing products, with a structure, which is formed substantially from a container (200) for storing product and a discharge apparatus (100), and with an operating mechanism (300), which has an operating lever (310) for activating and/or dosing the withdrawal of product from the container (200) by way of the discharge apparatus (100), with a rotary cap (120), wherein the operating lever (310) can be pivoted between a first pivot position and at least one second pivot position by a pivoting apparatus (400), characterized in that the pivoting apparatus (400) is formed substantially by an actuator (402), which is connected rotationally conjointly to the rotary cap (120), and a coupling (401), which is connected in an articulated manner to the operating lever (310), and wherein the actuator (402) has the shape of a helix and is configured such that a control curve (403) with a geometrical ramp is formed, in that the operating lever (310) of the operating mechanism (300) is, at an end side, operatively connected to the pivoting apparatus (400) by way of an articulated connection to the coupling (401), wherein the operating lever (310) serves for operating the discharge apparatus (100) for the product, and the operating lever (310), in a home position, is integrated geometrically into an outer contour of the container (200), wherein the operating lever (310), in an active position, is pivoted out regionally from the outer contour of the container (200), and wherein, in the home position, product is not dispensed even upon manual application of force to the operating lever (310), and wherein, in the pivoted-out position, product is dispensed upon application of force to the operating lever (310).
2. Storage device (10) according to Claim 1, characterized in that the pivoting apparatus (400) converts a rotational drive movement with respect to the central axis of the storage device (10) into a linear translational movement running substantially parallel to the central axis of the storage device (10) for the pivoting of the operating lever (310).
3. Storage device (10) according to Claim 1, characterized in that the pivoting movement of the operating lever (310) between a first pivot position and at least one second pivot position follows a substantially rotational movement path with respect to the central longitudinal axis of the storage device (10).
4. Storage device (10) according to Claim 1, characterized in that the pivoting movement of the operating lever (310) between a first pivot position and at least one second pivot position follows a substantially radial translational movement path with respect to the central longitudinal axis of the storage device (10).
5. Storage device (10) according to Claim 1, characterized in that the contact point between the coupling (401) and the actuator (402) is realized as a sliding connection which assists the relative movement of the coupling (401) and the actuator (402) with respect to one another.
6. Storage device (10) according to Claim 1, characterized in that the operating lever (310) of the operating mechanism (300) is operatively connected to an operating rod (321) such that the operating lever (310) is pivotable in a manner rotating about the operative connection.
7. Storage device (10) according to Claim 6, characterized in that the operative connection is established by coupling means (320) in the form of an articulated connection.
8. Storage device (10) according to Claim 1, characterized in that the pivoting movement of the operating lever (310) between a first pivot position and at least one second pivot position follows an approximately radial translational movement path with respect to the central longitudinal axis of the storage device (10), with the result that the grip region (311) can be pivoted into a radially protruding operating position.
9. Storage device (10) according to Claim 1, characterized in that, for pivoting the operating lever (310) between a first pivot position and at least one second pivot position, the rotary cap (120) is arranged in a manner rotatable about the central axis of the storage device (10) and the coupling (401) and the actuator (402) of the pivoting apparatus (400) act on one another.
10. Storage device (10) according to Claim 1, characterized in that, in the first pivot position, the operating lever (310) is pivoted into a recess (111) of the housing (110) such that the operating lever (310) is integrated into the structure of the storage device.
11. Storage device (10) according to Claim 1, characterized in that the operating mechanism (300) is configured such that, for the positioning of the operating lever (310) in the first pivot position, the discharge unit (500) cannot be activated for the purpose of product withdrawal or dosing.
12. Storage device (10) according to Claim 1, characterized in that the operating mechanism (300) is configured such that, for the positioning of the operating lever (310) in a position differing from the first pivot position of the pivoting apparatus (400), the discharge unit (500) can be activated for the purpose of product withdrawal or dosing.
13. Storage device (10) according to Claim 1, characterized in that the discharge apparatus (100) is configured for dispensing product in a radial or axial direction with respect to the central longitudinal axis of the storage device (10).
14. Method for withdrawing product from a storage device (10) according to Claim 1, characterized by the method steps of

    a. rotating the rotary cap (120) such that the operating lever (310) is pivoted from a first pivot position, in which the operating lever (310) is integrated into the structure of the storage device (10) and the discharge unit (500) cannot be activated, into at least one second pivot position, in which the operating lever (310) assumes a position protruding from the structure of the storage device (10), in which position the discharge unit (500) can be activated for the purpose of product withdrawal,

    b. moving the operating lever (310) such that the operating mechanism (300) activates the discharge unit (500) and product can be withdrawn and/or dosed, wherein the operating lever (310) serves for operating a discharge apparatus (100) for the product, and the operating lever (310), in a home position, is integrated geometrically into an outer contour of the container, wherein the operating lever (310), in an active position, is pivoted out regionally from the outer contour of the container (200), and wherein, in the home position, product is not dispensed even upon manual application of force to the operating lever (310), and wherein, in the pivoted-out position, product is dispensed upon application of force to the operating lever (310).
15. Method according to Claim 14, characterized in that the movement of the operating lever (310) is realized in a substantially rotational manner around the operating lever receiving part at the coupling means (320).

Images