Vacuum Cleaner Comprising an Operating Rocker

Information

  • Patent Application
  • 20080034533
  • Publication Number
    20080034533
  • Date Filed
    January 26, 2005
    19 years ago
  • Date Published
    February 14, 2008
    16 years ago
Abstract
An actuating element mounted on an electrical appliance for pivotal movement about a pivoting axis in the switching direction of a switch, in order to switch a function of the electrical appliance by actuating the switch, and comprises a slide with an actuating surface that is guided along a slide path provided on the actuating element to adjust an operating parameter. An operating rocker/slide is provided enabling uniform forces introduced into the operating rocker during displacement of the slide. The actuating element includes the slide path and the pivoting axis extending substantially parallel to each other. The parallel orientation of the pivoting axis and the slide path enables the same length of lever arm to be obtained in relation to the pivoting axis of the actuating element, in each position of the slide, during the introduction of forces into the actuating surface of the slide.
Description

In the figures:



FIG. 1 is a perspective view of a rear area of a vacuum cleaner provided with an actuating element according to the invention;



FIG. 2 is a sectional view through the actuating element according to FIG. 1 in its position depressed in the switching direction;



FIG. 3 is a sectional view through the actuating element according to FIG. 2 in its initial position;



FIG. 4 is a sectional view through the actuating element supported on a housing of the vacuum cleaner in its position depressed in the switching direction;



FIG. 5 is a sectional view through an actuating element where the slide is arranged so that it runs above the pivoting axis; and



FIG. 6 is a sectional view through the actuating element where the slide is mounted on a surface section which extends from the pivoting axis away from a switch.





A vacuum cleaner 1 shown in a perspective sectional view in FIG. 1 comprises a housing casing 2 in the rear area of the vacuum cleaner 1. The housing casing 2 sits on a lower shell 3 of the vacuum cleaner 1 and encloses electrical components of the vacuum cleaner 1 which are not shown, such as a fan unit, for example, a cable drum or electronic control elements. An impact protection strip 4 is inserted between the housing casing 2 and the lower shell 3. An actuating element 5 is pivotally mounted on the upper side of the housing casing 2. The actuating element 5 has two oppositely located tabs 6 for the pivotal mounting. Each tab 6 has respectively one bearing eye 7. The bearing eye 7 is embodied as a circular opening in the tab 6. The tabs 6 are constructed in one part with the actuating element 5 and are produced by plastic injection moulding. A pivot pin 8 projects into the opening of each bearing eye 7. The pivot pins 8 are connected to the housing cap 2 by means of a bearing block 9. Like the tabs 6, the pivot pins 8 are also constructed in one part with the housing cap 2 and are produced by plastic injection moulding. The connection of the bearing eyes 7 and pivot pins 8 forms a hinge arrangement which allows the actuating element 5 embodied as an operating rocker to pivot.


A front surface section 10 of the actuating element 5 bears a plurality of hemispherical knobs 11 which not only indicates to the user the surface over which he can pivot the actuating element 5 by pressing in the switching direction but also prevents slippage during actuation of this operating rocker. For optical recognition of the function which can be triggered by pivoting the operating-rocker-like actuating element 5, on its upper side in a central area of the surface section 10 provided with hemispherical knobs 11 the actuating element 5 has a pictogram-like elevation 12.


The actuating element 5 is provided with a slit-shaped opening 14 on a rear surface section 13. An actuating surface 15 of a slide 16 projects from the slit-shaped opening 14. Further hemispherical knobs 17 are attached to the actuating surface 15 of the slide 16. The slit-shaped opening 14 predefines a slide path 18 which extends parallel to a pivoting axis 19 of the actuating element 5.



FIG. 2 shows a sectional view of the actuating element 5 in its position depressed in the switching direction. The front surface section 10 bearing knobs 11 lies above a switching cam 20 moulded on the actuating element 5 which presses onto a cam follower 21 of an electrical switch 22 in the switching direction. The switch 22 is held in the housing casing 2. The actuating elements 5 is pivotally mounted about the pivoting axis 19 on the housing casing 2. In the position shown in FIG. 2 the slide path 18 running parallel to the pivoting axis 19 thus runs out from the plane of the drawing. The slide 16 bearing the actuating surface 15 is provided with an arm 23 on its lower side, this arm being moulded onto the slide 16 in one piece. The slide 16 is guided along the slide path on the actuating element 5 by means of the arm 23 which projects through the slit-shaped opening 14. The arm 23 has a spring-elastic locating lug 24 which is supported on the inner side 25 of the actuating element 5 in the built-in position of the slide 16. The arm 23 bears a projection 26 at its lower end which engages in two successively located entraining elements 27 in FIG. 2. The entraining elements 27 located at a distance from one another are moulded on a pivoted link 28.


As shown in FIG. 3, the pivoted link 28 has an engaging slit 29 in which a spindle 30 engages. An axial pin 31 is moulded on the spindle 30, this pin being inserted in a rotary potentiometer 32 in its built-in position. By displacing the slide 16, the arm 23 is displaced together with its projection 26 along the slide path 18. At the same time, the pivoted link 28 is displaced by the projection 26 engaging in the entraining members 27 of the pivoted link 28. As a result of the sliding of the pivoted link 28, the spindle 30 engaging in the engaging slit 29 is set in rotation. The rotation of the spindle 30 is transmitted by means of the axial pin 31 to the rotary potentiometer 32 which is connected electrically to a control circuit, not shown, to regulate a blower unit of the vacuum cleaner 1. FIG. 3 also shows a pre-tensioning element 33 embodied as a helical spring which pre-tensions the actuating element in the direction opposite to its switching direction in the initial position.



FIG. 4 shows a variant of an actuating element 5 according to the invention in which the slide 16 is not mounted on the actuating element 5 but on the housing cap 2. For this purpose the arm 23 moulded on the slide 16 has supporting ribs 34 by which means the arm 23 and therefore also the slide 16 is supported on the housing casing 2. For displaceable mounting of the slide 16 the housing cap 2 has a slit-shaped slide path in which the arm 23 is displaceably guided and retained. If compressive forces are introduced via the actuating surface 15 of the slide 16, these are introduced directly into the housing cap 2 and do not enter into the pivoting actuating element 5. For reliable decoupling of the slide 16 and actuating element 5, the slit-shaped opening 14 is dimensioned such that there is no direct contact between the arm 23 of the slide 16 and the actuating element 5 in the position of the actuating element 5 actuated in the switching direction (as shown in FIG. 4).


In another alternative variant, as shown in FIG. 5, both the normal to the actuating surface 15 and also the arm 23 of the slide 16 run through the pivoting axis 19 of the actuating element 5. In this variant, despite the slide 16 being mounted directly on the actuating element 15, no forces which could trigger an unintentional pivoting movement of the actuating element 5 in the switching direction are produced since no lever arm is produced for the introduced forces which could introduce a torque in the switching direction.


In an additional alternative variant as shown in FIG. 6, the slide is mounted on a surface section which extends from the pivoting axis away from the switch 22. In this case, both the normals to the actuating surface 15 and also the arm 23 are located behind the pivoting axis 19, that is on the side of the pivoting axis 19 opposite to the switch 22. In this variant, during actuation of the slide 16 forces are always introduced into the actuating element 5 which trigger a pivoting of the actuating element 5 into the initial position in the direction opposite to the switching direction. In this case, it is not possible to switch the switch 22 by pivoting the actuating element 5 during displacement of the slide 16.

Claims
  • 1-16. (canceled)
  • 17. An actuating element mounted on an electrical appliance in such a way that it can pivot about a pivoting axis in the switching direction of a switch in order to switch a function of an electrical appliance by actuating a switch and comprises a slide provided with an actuating surface which is displaceably guided along a slide path provided on the actuating element in order to adjust an operating parameter, the slide path and the pivoting axis extending substantially parallel to one another.
  • 18. The actuating element according to claim 17, wherein the slide path and the pivoting axis are arranged so that they run in a plane wherein a normal to the actuating surface of the slide is located.
  • 19. The actuating element according to claim 17, wherein the slide path is arranged so that it runs above the pivoting axis.
  • 20. The actuating element according to claim 17, wherein the pivoting axis runs through two bearing eyes which are constructed on the actuating element in opposing tabs between which the slide path runs and engage in the two pivot pins disposed on the electrical appliance.
  • 21. The actuating element according to claim 17, wherein the slide is mounted on a surface section of the actuating element which extends starting from the pivoting axis away from the switch in such a manner that a force introduced via the actuating surface of the slider is introduced into the actuating element in the direction opposite to the switching direction.
  • 22. The actuating element according to claim 17, wherein the slide is mounted on a surface section of the actuating element which extends starting from the pivoting axis in the direction of the switch and the actuating surface of the slide is embodied in position and shape in such a manner that the force introduced into the actuating surface runs through the pivoting axis.
  • 23. The actuating element according to claim 22, wherein the actuating surface of the slide is embodied as flat and has an inclination with respect to the surface section of the actuating element at which a force introduced into the actuating surface acts in a direction which intersects the pivoting axis.
  • 24. The actuating element according to claim 17, wherein the slide path is predefined by a slit-shaped opening in the actuating element through which the slide is guided along its slide path on the actuating element.
  • 25. The actuating element according to claim 24, wherein in order to transfer its movement along the slide path onto a slide regulator disposed on the electrical appliance, the slide is connected to an arm which acts on the slide regulator.
  • 26. The actuating element according to claim 25, wherein the arm projects through the slit-shaped opening and is supported on the electrical appliance to intercept forces acting in the direction of switching, introduced via the actuating surface of the slide.
  • 27. The actuating element according to claim 25, wherein the arm has a projection which engages between two entraining elements connected to the slide regulator which transmit the movement of the slide along the slide path onto the slide regulator.
  • 28. The actuating element according to claim 27, wherein the entraining elements have a minimum size at which the projection of the arm slidingly engages the entraining elements in each pivoting position of the sliding element.
  • 29. The actuating element according to claim 27, wherein the entraining elements are provided on a pivoted link which sits on a spindle mounted on the electrical appliance which converts the sliding movement of the pivoted link into a rotary movement to actuate a rotary potentiometer.
  • 30. The actuating element according to claim 25, wherein the arm has a spring-elastic locating lug supported on the inside of the actuating element which secures the arm of the slide inserted in the slit-shaped opening from outside the actuating element against pulling out.
  • 31. The actuating element according to claim 17, further comprising a pre-tensioning element pre-tensioning the actuating element in the direction opposite to the switching direction with a force larger than that required to displace the slide, which is introduced into the actuating element in the switching direction.
  • 32. A vacuum cleaner comprising: a housing;an actuating element mounted on the housing for pivotal movement with respect to the housing about a pivot axis;a slit-shaped opening extending along an outer surface of the actuating element;a switch disposed within the housing and being actuated in response to movement of the actuating element to control a function of the vacuum cleaner; anda slide mounted for translational movement with respect to the housing along a slide path to adjust an operating parameter of the vacuum cleaner, the slide being disposed adjacent the outer surface of the actuating element and having an arm extending through the slit-shaped opening.
  • 33. The vacuum cleaner according to claim 32, wherein the slide path and the pivoting axis extending substantially parallel to one another.
  • 34. The vacuum cleaner according to claim 32, wherein the actuating element includes a front surface section and a rear surface section wherein the slide is disposed adjacent the rear surface section, the pivot axis being disposed between the arm and the front surface.
  • 35. The vacuum cleaner according to claim 32, wherein the slide is slidably supported by the housing, the actuating element being free to pivot with respect to the slide.
  • 36. The vacuum cleaner according to claim 32, further comprising: an entraining element connected to an end of the arm within the housing and at least partially forming an engaging slit;a spindle mounted for rotation about an axial pin and having spiral-shaped flanges extending outwardly from the axial pin, the entraining element engaging the flanges at least partially within the engaging slit and the spindle rotating about the axial pin in response to translational movement of the slide; anda rotary potentiometer coupled to the spindle and receiving rotary input from the axial pin.
Priority Claims (1)
Number Date Country Kind
10 2004 004 859.2 Jan 2004 DE national
PCT Information
Filing Document Filing Date Country Kind 371c Date
PCT/EP05/50324 1/26/2005 WO 00 6/22/2007