EP2918432B1 - Operating device - Google Patents

Description

The invention relates to an operating device, in particular for operating units in passenger compartments in motor vehicles, having the features specified in the preamble of claim 1.

Operating devices, such. As turntable or sliding elements are known in various designs.

So is out of the DE 203 16 176 U1 an operative connection between horizontal and vertical slats is known, in which a sliding element is realized on a stationary or pivotable horizontal slat. The sliding element has a mechanical coupling element with a fork-shaped contour on its longitudinal side opposite the air outlet opening. This contour surrounds the outer surface of a vertical lamella, so that upon displacement of the sliding element, a movement of at least one vertical lamella is effected, wherein usually all vertical louvers are coupled together and thus perform a coordinated movement. The sliding element consists of two longitudinal halves, which are connectable to each other and form a guide tunnel for the lamella. On the front side, a decorative closure part is provided for securing the composite.

In the DE 37 19 837 C1 is an air nozzle with two offset in the flow direction by 90 ° to each other, arranged one behind the other and described with a common sliding element displaceable plate sets described. The sliding element is associated with an additional flat spring, with a self-locking positional fixation of the slats and an independent of the adjustment of the slats same operating force to be achieved. The sliding element is in one embodiment as snap-on U-shaped Part formed, the rear has receptacles for the coupling element for the vertical slats.

In the construction according to the DE 101 04 428 C2 are arranged between the horizontal lamella and supported on this sliding element two spring elements, which cause a particularly soft and yet stable stable displacement and constant forces. The sliding element consists of two longitudinal halves, which connected to each other form the tunnel with which the sliding element is slidably mounted on the lamella. Laterally above, the lamella on management approaches, which are guided in guide channels of the sliding element and limit the lateral movements of the sliding element by abutting the inner edges of the same. The proposed pressure spring for generating the pressing force of the sliding element to the blade is attached to a bearing block on the blade and engages with two legs in a guide groove of a part which is connectable to the sliding element. In this embodiment, the sliding surface for the spring is not on the lamella, but on the sliding element itself. With this part, the coupling parts are connectable to effect a sliding movement transformation on the located behind the horizontal slats vertical slats.

In the DE 101 32 186 A1 It is proposed to assign the also guided on a horizontal slat sliding element a spring-loaded detent ball. The detent ball is guided in a recess in the sliding element and can snap into arcuate recesses in the lamella. Consequently, with this technical solution, a self-locking position fixation of the slats in defined positions possible.

Regardless of the specific embodiment of such air nozzles, the sliding element is usually a Assigned stop to ensure by limiting the maximum displacement possible the coupling function between the horizontal and vertical slats and thus the functioning of the air nozzle in each position. This will be done according to the DE 195 04 737 C2 achieved by a, provided at the rear portion of the sliding element projection which abuts at a certain angle to a blade and thus blocks the sliding movement abruptly. In this embodiment, the sliding element is arranged on a vertical lamella of an air nozzle and has rear side elements which are coupled to horizontal louvers. By moving the sliding element on the vertical lamella by a defined stroke, the horizontal louvers are also adjusted by the coupling elements at an angle. The sliding element consists of a U-shaped body which can be latched onto the horizontal lamella.

In the EP 1 080 959 B1 a construction is described in which a spring with two arcuate spring arms is inserted in a recess of a guided on a blade sliding element. These spring arms cause at a displacement of the sliding element in the last section before the lateral end stop in each case a damped movement, so that the components are acted upon instead of a sudden impact effect with only a gently increasing force. The provided here, attached to the blade shape spring is formed so that on the one hand generates the required pressure force against a sliding surface in the sliding element and on the other causes a lateral stop effect with resilient characteristic within the U-shaped recess in the sliding element. The pressure force is determined by the shape of the spring, the material used and their bias.

From the DE 20 2004 006 461 U1 It is known to form a chamber in the sliding element and / or in the associated blade, in which, for example, a wave-shaped insert of elastic plastic can be used as a damping element. The arrangement further shows that the sliding element consists of two compressible parts and that on one side another spring is provided, which exerts a certain pressure force on a connecting member which is attached to the sliding element, and thus indirectly also the contact pressure on the opposite Side of the guide tunnel in the sliding element, which is pressed against an elastic ball or roller determined. The lateral movement is limited by the elastic ball, which is slidably mounted in a recess in the blade.

In the DE 203 07 030 U1 a sliding element is described with a sliding chamber, wherein between stops for lateral limiting of the displacement springs are inserted.

From the DE 20 2006 009 352 U1 a sliding element is known, which is arranged on a lamella of an air nozzle. The air nozzle is used to guide an air flow from an air supply duct or from an air supply line in heating, ventilation or air conditioning systems, especially for passenger compartments in motor vehicles. The air nozzle consists of a housing which can be inserted into or behind a wall opening and which has a rear connection for an air supply duct or an air supply duct and a front air outflow opening. The sliding element is articulated with a sliding surface or with sliding elements on at least one corresponding rear sliding surface of the blade and supported for this purpose opposite to a spring-loaded or resiliently executed slider or with a shaped spring on the blade. It is at least a means for adjusting the pressing force of the slider or of the form spring is provided, wherein at least one screw is provided as adjusting, which presses on the slider or the pin, the shape spring or against the spring in operative connection and with which the pressing force is adjustable by turning.
From the DE 197 34 682 B4 is a detent switch in the form of a twist grip switch known, which serves to control a bicycle transmission. The detent switch comprises a housing having an annular space, a driver operable rotary member, a detent spring disposed between the rotary member and the rotatably mounted housing and having a nose which is engageable by operating the rotary member with different notches successively. The detent spring has a support point in the middle region, which biases the two ends of the detent spring radially outwards and divides the detent spring into two spring halves. One end of the detent spring is equipped with a nose which engages in the detents and the other end forms a hook, which secures the detent spring upon actuation of the rotary member on the housing against entrainment in the direction of rotation. By shifting the support member in the tangential direction, the spring stiffness of the nose-side spring half can be changed.

From the genus DE 20 2010 008 672 U1 a device for generating an operating force is known. It is a magnetizable surface, a magnetic member for generating a force against the magnetizable surface and an elastomer for supporting the force generated by the magnetic member and for generating an operating force by sliding friction known.

In the known versions of operating devices, the sliding torque is due to the pressing force, the sliding friction determined by the surface condition of the sliding surfaces between the blade and the sliding element and by the mechanical transmission properties of the coupled components. This means that, taking into account tolerances, the shifting of the sliding element is often difficult or smooth. Also, the desired sliding properties of the sliding element from sliding element to sliding element can not be ensured in production. To comply with a specified sliding torque, a selective replacement of components is often essential. In addition, the force necessary to operate the sliding element can not be easily adapted by a user or by the manufacturer after the production of the operating device.

The present invention has for its object to provide an operating device that can be adjusted easily and user-friendly in terms of their expended operating force after production and after assembly of the operating device.

The problem is solved by designing an operating device with the features specified in claim 1.

Advantageous embodiments of the invention are specified in the dependent claims in detail.

The operating device according to the invention consists of a stationary element and a relative to the stationary element movably mounted or movably arranged element, wherein the movably mounted element or movably arranged element relative to the stationary element along the stationary element is displaceable or rotatable relative to the stationary element. It is a spring element between the movably mounted element and the stationary element, these elements against each other supporting, arranged. The spring element is connected to the movably mounted element or the stationary element via a spring receiving unit on a plunger. The spring element contacts with its spring receiving unit opposite side of a arranged sliding surface. The spring element generates a pressing force. This arises between the spring element and the movably mounted element or the stationary element. The spring receiving unit is arranged on a plunger, which rests on a wedge on the opposite side of the spring element, wherein the wedge is displaceable relative to the plunger, so that the pressing force of the spring element in dependence on the position of the wedge relative to the plunger is variable.

According to an advantageous embodiment of the invention it is provided that the height of the wedge increases from one side of the wedge to the opposite side of the wedge and the top of the wedge is not parallel to the bottom.

According to an advantageous embodiment of the invention it is provided that the wedge is arranged in a cavity formed between the stationary element and the movably mounted element, or in a recess in the stationary element or in the movably mounted element and that the movably mounted element that stationary element, at least partially covering the cavity, encloses or overlaps.

According to an advantageous embodiment of the invention it is provided that the movably mounted element is guided on the stationary element by means of a groove.

• im Keil in einer Vertiefung ein bewegliches Kopplungselement angeordnet ist, das vom beweglich gelagerten Element überdeckt ist, wobei das beweglich gelagerte Element auf der dem Kopplungselement zugeordneten Seite einen Überstand oder eine weitere Vertiefung aufweist, so dass das Kopplungselement in einer aktivierten Stellung teilweise in der Vertiefung und der weiteren Vertiefung am bewegliche gelagerten Element zu liegen kommt und form- und/oder kraftschlüssig das beweglich gelagerte Element und den Keil verbindet, so dass bei einer Betätigung des beweglich gelagerten Elements sich zugleich der Keil gegenüber dem Stößel verschiebt und dass in nicht aktivierter Stellung das Kopplungselement in der Vertiefung liegt und das beweglich gelagerte Element ohne mechanischen Kontakt zum Keil über die Vertiefung bewegbar ist, oder
• im stationären Element in einer Vertiefung ein bewegliches Kopplungselement angeordnet ist und der Keil ein Element mit einer Vertiefung aufweist, das der Vertiefung im stationären Element gegenüberliegend angeordnet ist, so dass das Kopplungselement in einer aktivierten Stellung, bei der sich das bewegliche Kopplungselement teilweise in der Vertiefung im stationären Element und der weiteren Vertiefung im Element des Keils befindet, form- und/oder kraftschlüssig das stationäre Element mit dem Keil verbindet, so dass bei einer Betätigung des beweglich gelagerten Elements sich zugleich der Keil gegenüber dem Stößel verschiebt und dass in nicht aktivierter Stellung das Kopplungselement in der Vertiefung liegt, ohne dass das Element des Keils berührt wird.

According to an advantageous embodiment of the invention it is provided that

• in the wedge in a recess a movable coupling element is arranged, which is covered by the movably mounted element, wherein the movably mounted element on the coupling element associated side has a projection or a further recess, so that the coupling element in an activated position partially in the recess and the further depression comes to rest on the movably mounted element and positively and / or non-positively connects the movably mounted element and the wedge, so that upon actuation of the movably mounted element at the same time the wedge moves relative to the plunger and that in the non-activated position the coupling element is located in the recess and the movably mounted element is movable without mechanical contact with the wedge over the depression, or
• a movable coupling element is arranged in the stationary element in a recess, and the wedge comprises an element with a recess which is arranged opposite the recess in the stationary element, so that the coupling element in an activated position, in which the movable coupling element partially in the recess located in the stationary element and the further recess in the element of the wedge, positively and / or non-positively connects the stationary element with the wedge, so that upon actuation of the movably mounted element at the same time the wedge moves against the plunger and that in non-activated position the coupling element lies in the recess without the element of the wedge being touched.

According to an advantageous embodiment of the invention, it is provided that the coupling element is a ball, a cylinder, a bracket, a spring, a leaf spring or a specially shaped body which in the activated position with the further recess of the movably mounted element or the depression in Wedge or in the element of the wedge creates a positive connection.

According to an advantageous embodiment of the invention it is provided that the coupling element is magnetic and can be brought into an activated position by means of a magnet or electromagnet or a magnetic field.

According to an advantageous embodiment of the invention it is provided that the sliding surface is formed by a polymer layer, a plastic layer or a coating.

According to an advantageous embodiment of the invention, it is provided that a marking is arranged on the stationary element in a not superimposed by the movably mounted element area, which indicates the position of the coupling element.

According to an advantageous embodiment of the invention it is provided that the movably mounted element is a slide and the stationary element is a lamella or the movably mounted element is a rotary ring gear and the stationary element is a bearing dome or a fixed shaft for receiving the rotary ring gear.

According to an advantageous embodiment of the invention it is provided that the stationary element, the movably mounted element, the plunger and the wedge are made of plastic.

According to an advantageous embodiment of the invention it is provided that the pressure force of the spring element is adjustable to a certain value, taking into account a desired sliding torque or torque of the movably mounted element.

According to an advantageous embodiment of the invention, it is provided that the spring element is a shape spring, a leaf spring, a spring made of metal or plastic or a compressible unit.

According to an advantageous embodiment of the invention, it is provided that the wedge is a round wedge or the wedge is slightly beveled on its side facing the plunger or forms a Tangentenvieleck.

The invention will now be described by way of example with reference to the accompanying drawings, in which: FIG. 1 to FIG. 14 explained.

This description by way of concrete exemplary embodiments does not represent any limitation of the invention to one of these concrete exemplary embodiments. The exemplary embodiments show the invention with reference to an embodiment in the form of a lamella and a slider which can be arranged on the lamella and in the form of a turntable.

They are in the figure description in the figures FIG. 1 to FIG. 9 and FIG. 10 to FIG. 14 same reference numerals are used for the same elements. This is to better understand the invention.

FIG 1

eine schematische Darstellung der Erfindung anhand einer Lamelle und einem auf der Lamelle angeordneten Schieber;

FIG 2

die in FIG 1 schematisch dargestellte Lamelle und den Schieber sowie die weiteren erfindungswesentlichen Elemente in einer Explosionsdarstellung;

FIG 3 bis 5

einen Schnitt durch eine Lamelle mit einem auf der Lamelle angeordneten Schieber gemäß FIG 1, dort mit A-A gekennzeichnet, in unterschiedlichen Stellungen;

FIG 6 bis 9

eine Schnitt durch die Lamelle mit dem auf der Lamelle angeordneten Schieber gemäß FIG 1 und dort mit B-B gekennzeichnet;

FIG 10 bis 14

jeweils einen Drehsteller in Schnittdarstellung.

Show it:

FIG. 1

a schematic representation of the invention with reference to a blade and arranged on the blade slide;

FIG. 2

in the FIG. 1 schematically illustrated blade and the slide and the other elements essential to the invention in an exploded view;

3 to 5

a section through a blade with a slat arranged on the slide according to FIG. 1 , there marked with AA, in different positions;

FIGS. 6 to 9

a section through the slat with the arranged on the slat slide according to FIG. 1 and there marked with BB;

FIGS. 10 to 14

each a turntable in a sectional view.

FIG. 1 shows a schematic representation of an operating device according to the invention with reference to a portion of a slat 1 and on the slat 1, along the slat 1, slidably arranged slider 2. The slider 2 engages over the slat 1 in the front region 15 and is at the front portion 15 of the slat. 1 opposite side equipped with a sliding surface 3. In the rear region 16 of the lamella 1, a groove 10 is introduced into the upper side 17 of the lamella 1. The groove 10 extends parallel to the front region 15 or rear region 16 of the lamella 1. The slider 2 is U-shaped and has two legs 18, 19. The first leg 18 of the slider 2 is slightly longer than the second leg 19. The first leg 18 of the disc 2 surrounds or overlaps the front portion 15 of the blade 1. The second leg 19 of the slider 2 is located in the groove 10 of the blade 1 and is guided by this along the lamella 1. The second leg 19 of the slider 2 has a bore 13 approximately in the middle. The bore 13 serves to lock the slide 2 with a plug-in device at a certain position on the lamella 1 and to enable to release by means of force the slide 2 of the lamella 1.

In FIG. 2 is the operating device according to FIG. 1 shown in exploded view. There are the section of the lamella 1, the slide 2 and the other essential components of the control device in exploded view. In the top of the blade 1, a recess 8 is placed next to the groove 10. The recess 8 is substantially T-shaped, wherein the roof 8-1 of the T-shaped recess 8 represents the larger area of the recess 8 in the lamella 1 and the column 8-2 of the T-shaped recess 8 is narrower and straight to the front portion 15 of the lamella 1 extends. In the recess 8, in the roof 8-1, a wedge 7 is inserted. The roof 8-1 of the T-shaped recess 8 takes the shape of the wedge 7 and is slightly larger than the wedge 7, so that the wedge 7 in the recess 8 in the longitudinal direction of the lamella 1 is movable. In the column 8-2 of the T-shaped recess 8, a plunger 6 can be inserted. The plunger 6 has on the opposite side of the wedge 7 on a spring receiving unit 5. With the spring receiving unit 5 opposite side of the plunger 6 rests on the wedge 7. The wedge 7 is slightly bevelled on its side facing the plunger 6 and forms quasi a Tangentenvieleck. The underside of the wedge 7 is arranged parallel to the rear region 16 of the lamella 1 in the recess 8. By the inclined top of the wedge 7, on which the plunger 6 rests, it is possible to change the position of the plunger 6 in the recess 8, in the column 8-2. It is thus possible, depending on the position of the wedge 7 in the recess 8, push out or pull the plunger 6 from the blade 1 at the front portion 15.

On the plunger 6, the spring receiving unit 5 is provided, on which a spring 4 can be arranged. If the slider 2 is arranged on the blade 1, the slider 2 is guided with its leg 19 in the groove 10 on the blade 1 and the leg 18 of the slider 2 is at the Sliding surface 3 is acted upon by the spring 4 with a pressing force. There is a frictional connection between the blade 1 and the slide 2 by the spring 4 exerts a pressing force on the sliding surface 3 and a counter force in the groove 10 holds the slider 2 on the blade 1.
The pressing force with which the slider 2 is held on the blade 1 is determined by the spring force of the spring 4. Since the spring 4 rests in the spring receiving unit 5 on the plunger 6, the plunger 6 rests on the wedge 7, by a change in the position of the wedge 7 in the recess 8, the pressing force of the spring 4 can be changed.

After overcoming the corresponding holding force, which is exerted by the spring 4 on the sliding surface 3, the slider 2 on the blade 1 is movable. The force required for this purpose is defined by the frictional force which the slider 2 has to overcome in order to be movable. By changing the position of the wedge 7 in the recess 8 is thus an increase or a reduction of the pressing force exerted by the spring 4 on the sliding surface 3 of the slider 2, since the plunger 6 in response to the position of the wedge 7 to the plunger. 6 further or less far in the direction of the front portion 15 of the blade 1 is pushed and thus vary the pressing force of the spring 4 to the sliding surface 3 and thus can be adjusted.

The spring 4 is preferably a form spring, a leaf spring, a spring made of metal or plastic or a compressible unit. The sliding surface 3 has a polymer coating or a plastic coating. By a suitable choice of the sliding surface 3 and the material of the sliding surface 3 in conjunction with the selection of the nature and texture The spring 4 is a Sattlauf and a comfortable sliding feel of the slider 2 along the blade 1 can be generated.

In the wedge 7, a bore 11 is provided. In the bore 11, a ball 9 can be introduced. In an alternative embodiment, instead of the ball 9, there is a cone, cylinder or other suitable geometric body. The ball 9 is made of a magnetic material.

In FIG. 3 is a horizontal section through the blade 1 and arranged on the blade 1 slider 2 shown. The cutting line is in FIG. 1 designated AA. The slider 2 engages over the front region 15 of the lamella 1. The spring 4, which is arranged in the spring receiving unit 5 on the plunger 6, exerts a pressing force on the sliding surface 3. It forms a frictional connection between the sliding surface 3 and the spring 4. The slider 2 is held with its second leg 19 in the groove 10 in the blade 1 and by the frictional connection between the sliding surface 3 and the spring 4 on the blade 1.

The wedge 7 is located approximately in the middle of the roof 8-1 of the T-shaped recess 8. The wedge 7 is in the roof 8-1 of the T. In the roof 8-1 of the T-shaped recess 8 of the lamella -shaped recess 8 movably arranged. The wedge 7 is slidable in the longitudinal direction of the lamella 1 in the roof 8-1 of the T-shaped recess 8. It forms a distance 12 between the spring receiving unit 5 and the sliding surface 3.

In FIG. 4 is how in FIG. 3 , A section through the blade 1 with the arranged on the blade 1 slide 2 shown. The wedge 7 is moved almost to the left edge of the roof 8-1 of the T-shaped recess 8. Since the top 14 of the wedge 7 rises slightly from left to right, the plunger 6 is pushed further in this position in the direction of the sliding surface 3. This increases the pressure force of the spring 4, which acts on the sliding surface 3. In this position of the wedge 7, the pressing force is increased by the spring 4 on the sliding surface 3. The wedge 7 presses the plunger 6 from the column 8-2 of the T-shaped recess 8, and thus the pressing force acting on the sliding surface 3 is increased. Thus, the force required to move the slider 2 along the blade 1, also greater than in the position of the wedge 7 according to FIG. 3 ,

When the wedge 7 is moved in the left direction, this increases the pressing force of the spring 4 acting on the sliding surface 3, resulting in that the force becomes larger to move the slider 2.

In FIG. 5 is how in FIG. 3 , A section through the blade 1 with the arranged on the blade 1 slide 2 shown. The wedge 7 is moved almost to the right edge of the roof 8-1 of the T-shaped recess 8. Since the upper side 14 of the wedge 7 slightly increases from left to right, the distance of the underside of the wedge 7 to the upper side 14 of the wedge 7 increases from left to right, the plunger 6 is not pushed so far in the direction of the sliding surface 3 in this position , as shown in the illustration FIG. 3 or FIG. 4 , This reduces the pressure force of the spring 4, which acts on the sliding surface 3. In this position of the wedge 7 is the force acting on the sliding surface 3 by the spring 4 pressing force against the position in FIG. 3 and FIG. 4 reduced. Thus, the force required to move the slider 2 along the sipe 1 is also lower than in the position of the wedge 7 in FIG FIG. 3 or FIG. 4 ,

When the wedge 7 is moved in the right direction, this reduces the pressing force of the spring 4 acting on the sliding surface 3, resulting in that the force required to displace the slider 2 becomes smaller.

In order to move the wedge 7 in a desired position within the roof 8-2 of the T-shaped recess 8 and thereby to change the pressing force of the spring 4, the bore 11 is provided with the ball 9 therein in the wedge 7. The ball 9 is made of a magnetically active material.

The slide 2 has on its the top of the slat 1 facing bottom of a depression or a bridge - in the figures 3 to FIG. 5 not shown - the or is performed when moving the slider 2 via the bore 11 in the wedge 7. If the wedge 7 is to be displaced, the ball 9 is raised in the bore 11 by means of a magnet or a magnetic field so that it presses against the underside of the slider 2. Now slides the slider 2 via the bore 11, so there is a frictional connection between the ball 9 and the recess or the web or in the bottom of the slider 2 and the wedge 7 is moved by the slider 2, which, as previously described , changes the position of the plunger 6 in the column 8-2 of the T-shaped recess 8, whereby a change in the pressing force of the spring 4, which acts on the sliding surface 3, is also effected. It can thus be changed by a coupled displacement of the slider 2 with the wedge 7, the pressing force of the spring 4 on the sliding surface 3. It can thus adjust the pressure force taking into account a desired shift moment to a certain value. When the desired value is reached, the magnet or the magnetic field is removed and the ball 9 falls back into the bore 11 and the frictional connection between the ball 9, the wedge 7 and the slide 2 is released. The set sliding torque remains.

Upon activation of the ball 9 by means of a magnet or a magnetic field, the wedge 7 in the roof 8-2 of the T-shaped recess can be moved from left to right or from right to left. When moving the wedge 7 from right to left, the pressing force of the spring 4, since the plunger 6 is pushed in the column 8-2 of the T-shaped recess 8 in the direction of the sliding surface 3, increased against the sliding surface 3; when moving from left to right, the pressure is reduced.

In FIG. 6 is a section through the blade 1 and arranged on the blade 1 sliding element 2 is shown. The cut is in FIG. 1 marked with BB.
The cutting line extends through the bore 11. The slide 2 is arranged on the lamella 1. In the lamella 1, the roof 8-1 of the T-shaped recess 8 is present, in which the wedge 7 is located with the bore 11 and with the ball 9 therein. In the bottom of the slider 2, a recess 20 is present. The recess 20 is selected so that the ball 9 can partially engage in the recess 20, so that a positive connection between the ball 9, the wedge 7 and the slider 2 can be done. As shown in FIG. 6 the ball 9 is in the bore 11 of the wedge 7. The slider 2 can be moved along the blade 1. The wedge 7 is fixed, due to the pressing force of the spring 4, the in FIG. 6 is not shown in the roof 8-1 T-shaped recess. 8

In FIG. 7 the frictional coupling state between the slide 2, the wedge 7 and the ball 9 is shown. About a magnet 21, which is a magnetic attraction on the ball 9, wherein the magnet 21 must be performed close enough to the top of the slider 2, the ball 9 is pulled to the bottom of the slider 2 and engages in the recess 20. The recess 20 is selected so that the ball. 9 engages only partially in the recess 20, and only so far that a part of the ball 9 still remains in the bore 11 in the wedge 7. In this state, a positive and / or frictional connection between the wedge 7 and the slider 2 on the ball 9. If now the slider 2 is moved along the blade 1, so the wedge 7 is moved together with the slider 2, as in FIG. 4 and 5 shown, and the position of the wedge 7 relative to the plunger 6 changed, with the consequences already described above.

In FIG. 8 It is now shown how the wedge 7 is pushed to the left under the action of the non-positive and / or positive connection between the wedge 7, slide 2 and ball 9. Now, if the wedge 7 remain in this position, since the adjusted operating force or the sliding torque corresponds to how a user desires the operating force, the magnet 21 is removed, the ball 11 slides from the non-positive position of the recess 20 down into the bore 11 and the coupling of the slider 2 with the wedge 7 is canceled, as in FIG. 9 is shown.

In FIG. 10 an embodiment of the invention for a turntable with adjustable operating force is shown. The turntable has a fixed dome 31, which is surrounded by a turntable 32. In an alternative embodiment, instead of the mandrel 31, a fixed shaft may be arranged. The turntable 32 is arranged rotatably about the dome 31 at least by a predefined angular range. Between the turntable 32 and the dome 31, a cavity 38 is formed. In this cavity 38 is a round wedge 37 on the inside of the turntable 32 arranged. The round wedge 37 has on one side a frusto-conical shape 312, in which on the dome 31 side facing a bore 310 is introduced. On the round wedge 37, an adjusting element 36 is arranged, which has on the side facing the dome 31, a spring receiving unit 35 and a spring 34 disposed on the spring receiving unit 34. The adjusting element 36 is arranged on the round wedge 37 in the manner supported by two support elements or guide elements 313, that the round wedge 37 is slidable in positive engagement with the lying in the bore 311 ball 39 under the adjusting element 36 and in dependence of the position of the round wedge 37 relative to the adjusting element 36, the adjusting element 36 in the direction of the dome 31 or opposite moves. Depending on the position of the adjusting element 36, the spring 34 exerts an increased or a reduced pressure force on a sliding surface 33 arranged opposite the dome 31, the spring 34. The force that is necessary to rotate the turntable 32 relative to the dome 31 is determined by this pressure force of the spring 4. The sliding surface 33 is provided with a polymer or other coating.

In FIG. 11 is another section shown by a turntable. The ball 39 is located in the bore 311. The turntable is operable with the selected setting position of the circular wedge 37 and the adjusting element 36 with a predefined operating force.

In FIG. 12 a corresponding magnetic attraction force is now exerted on the ball 39 via a magnet 315, so that the ball 39 in the bore 310, which may also be configured in the form of a depression, at least partially immersed in the frusto-conical shape 312 on the round wedge 37. The not penetrated into the bore 312 part of the ball 39 is still in the bore 310 and the ball 39 thus provides a positive fit and / or non-positive operative connection between the dome 31 and the round wedge 37 ago. Now, if the turntable 32 is rotated relative to the dome 31, the round wedge 37 is held and the adjusting element 36 which is coupled to the turntable 32 is changed relative to the wedge 37 in its position. If the adjusting element 36 moves in the direction of the truncated conical shape 312, the adjusting element 36 is pressed closer to the sliding surface 33 and the pressing force of the spring 34 is increased; the force necessary to turn the turntable 32 relative to the dome 31 increases. If the adjusting element 36 moves away from the truncated conical shape 312, then the adjusting element 36 is brought further away from the sliding surface 33 and the pressing force of the spring 34 is reduced; the force necessary to turn the turntable 32 with respect to the dome 31 decreases.

In FIG. 13 a position of the adjusting element 36 is shown in the opposite to the position of the adjusting element 36 in FIG. 12 an increased application of force to rotate the adjusting ring 32 relative to the dome 31 is required.

In FIG. 14 the magnet 315 is removed. The round wedge 37 is decoupled from the dome 31. The ball 39 is again in the bore 311st

LIST OF REFERENCE NUMBERS

1

lamella

2

pusher

3

sliding surface

4

feather

5

Spring receiving unit

6

tappet

7

wedge

8th

T-shaped recess

8-1

Roof of the T

8-2

Pillar of the T

9

Bullet

10

groove

11

Bore (in wedge 7)

12

Distance between spring receiving unit and sliding surface

13

drilling

14

Top wedge

15

front area

16

rear area

17

Top of the slat

18

first leg slider

19

second leg slider

20

Recess (in bottom slide 2)

21

magnet

31

cathedral

32

slewing ring

33

sliding surface

34

feather

35

Spring receiving unit

36

adjustment

37

round wedge

38

cavity

39

Bullet

310

Bore (in the round wedge)

311

Bore (in the dome)

312

frustoconical shape

313

support elements

314

Top round wedge

315

magnet

Claims (14)

1. Operating device consisting of a stationary element (1, 31) and an element (2, 32) mounted to be movable relative to the stationary element (1, 31), wherein the movable element (2, 32) is displaceable relative to the stationary element (1, 31) along the stationary element (1, 31) or is rotatable relative to the stationary element (1, 31), wherein a spring element (4, 34) is arranged between the movably mounted element (2, 32) and the stationary element (1, 31) to support these relative to one another, wherein
   the spring element (4, 34) is coupled to the movably mounted element (2, 32) or the stationary element (1, 31) by way of a spring mounting unit (5, 35) and by the side not coupled to the movably mounted element (2, 32) or the stationary element (1, 31) contacts a slide surface (3, 33) arranged at this element (1, 31; 2, 32) and generates a pressing force between the spring element (4, 34) and the movably mounted element (2, 32) or the stationary element (1, 31),
   characterised in that
   the spring mounting unit (5, 35) is arranged on a plunger (6, 36) which at the side opposite the spring element (3, 31) rests on a wedge (7, 37), wherein the wedge (7, 37) is displaceable relative to the plunger (6, 36) so that the pressing force of the spring element (4, 34) is variable in dependence on the setting of the wedge (7, 37) relative to the plunger (6, 36).
2. Operating device according to claim 1, characterised in that the height of the wedge (7, 37) increases from one side of the wedge (7, 37) to the opposite side of the wedge (7, 37) and thus the upper side (14, 314) of the wedge (7, 37) does not extend parallel to the lower side.
3. Operating device according to claim 1 or 2, characterised in that the wedge (7, 37) is arranged in a cavity (8, 38), which is formed between the stationary element (1, 31) and the movably mounted element (2, 32), or in a recess in the stationary element (1) or in the movably mounted element (31) and that the movably mounted element (2, 32) encloses or engages over the stationary element (1, 31) to at least partly cover the cavity (8, 38).
4. Operating device according to any one of the preceding claims, characterised in that the movably mounted element (2, 32) is guided at the stationary element (1, 31) by means of a groove (10).
5. Operating device according to any one of the preceding claims, characterised in that

   - a movable coupling element (9) which is covered by the movably mounted element (2) is arranged in the wedge (7) in a recess (11), wherein the movably mounted element (2) has on the side associated with the coupling element (9) a projection or a further recess (20) so that the coupling element (9) in an activated setting comes to lie partly in the recess (11) and the further recess (20) at the movably mounted element (2) and mechanically positively and frictionally connects the movably mounted element (2) and the wedge (7) so that on actuation of the movably mounted element (2) the wedge (7) at the same time displaces relative to the plunger (6) and that in non-activated setting the coupling element (9) lies in the recess (11) and the movably mounted element (2) is movable over the recess (11) without mechanical contact with the wedge (7), or

   - a movable coupling element (39) is arranged in the stationary element (31) in a recess (311) and the wedge (37) comprises an element (312) with a recess (310) arranged opposite the recess (311) in the stationary element (31) so that the coupling element (39) in an activated setting in which the movable coupling element (39) is disposed partly in the recess (311) in the stationary element (31) and the recess (310) in the element (312) mechanically positively and/or frictionally connects the stationary element (31) with the wedge (37) so that in the case of actuation of the movably mounted element (32) the wedge (37) at the same time displaces relative to the plunger (36) and that in the non-activated setting the coupling element (39) lies in the recess (311).
6. Operating device according to any one of the preceding claims, characterised in that the coupling element (9, 39) is a ball, a cylinder, a yoke, a spring, a leaf spring or a specially shaped body which in the activated setting produces a mechanically positive couple with the further recess (20) of the movably mounted element (2) or the recess (310) in the wedge (37).
7. Operating device according to any one of the preceding claims, characterised in that the coupling element (9, 39) is magnetic and can be brought into the activated setting by means of a magnet (15, 315) or electromagnet or magnetic field.
8. Operating device according to any one of the preceding claims, characterised in that the slide surface (3, 33) is formed by a polymer layer, a plastics material layer or a coating.
9. Operating device according to any one of the preceding claims, characterised in that a marking indicating the position of the coupling element (9, 39) is arranged at the stationary element (1, 31) in a region not superimposed by the movably mounted element (2, 32).
10. Operating device according to any one of the preceding claims, characterised in that the movably mounted element (2) is a slider and the stationary element (1) is a slat or the movably mounted element (32) is a wheel rim and the stationary element (31) is a bearing dome or a stationary shaft for mounting the wheel rim (32).
11. Operating device according to claim, characterised in that the stationary element (1, 31), the movably mounted element (2, 32), the plunger (6, 36) and the wedge (7, 37) consist of plastics material.
12. Operating device according to any one of the preceding claims, characterised in that the pressing force of the spring element (4, 34) is adjustable to a defined value with consideration of a desired thrust moment or torque of the movably mounted element (2, 32).
13. Operating device according to any one of the preceding claims, characterised in that the spring element (4, 34) is a shaped spring, a leaf spring, a spring of metal or plastics material or a compressible unit.
14. Operating device according to any one of the preceding claims, characterised in that the wedge (37) is a round wedge or the wedge (37) is slightly chamfered on the side thereof facing the plunger (6) or forms a circle-circumscribed polygon.

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