DE102015121733A1 - Household appliance, in particular attachment of a vacuum cleaner - Google Patents

Abstract

The invention relates to a domestic appliance (1), in particular attachment (2) of a vacuum cleaner (3), with a housing part (4) having a housing underside (4a), with a support means (5), with a support means carrier (6) is connected to the housing part (4) and on which the support means (5) is arranged, wherein the support means carrier (6) relative to the housing part (4) between a first end position (I) and a second end position (II) is movable the support means (5) on the housing lower side (4a) in the second end position (II) maximum and in the first end position (I) less than in the second end position (II) or not protruding, and with a movement limiting means (7), the between an active position (A) in which there is a movement of the support means carrier (6) in the direction from the first end position (I) to the second end position (II) in an intermediate position (III) between the first end position (I) and the second end position ( II) Zt, and an inactive position (B) is movable, in which it allows movement of the support means carrier (6) from the first end position (I) to the second end position (II). In order to allow a more exact setting of a defined ground clearance, the invention proposes that the movement limiting means (7) comprises a spacer (8) which in the active position (A) vertically above a stop portion (9) of the housing part (4) and thereto is arranged adjacent. The invention further relates to a household appliance, in particular a vacuum cleaner (3), comprising a household appliance (1) as an attachment (2).

Description

The present invention relates to a domestic appliance, in particular attachment of a vacuum cleaner, with a housing part having a housing bottom, with a support means, with a support means carrier which is connected to the housing part and on which the support means is arranged, wherein the support means carrier relative to the housing part between a first end position and a second end position, the support means protruding maximally at the housing bottom in the second end position and less than the second end position in the first end position, and with motion limiting means disposed between an active position in which a movement of the support means carrier is limited in the direction from the first end position to the second end position in an intermediate position between the first end position and the second end position, and an inactive position is movable, in which there is a movement of the support means carrier of d he first end position allows up to the second end position.

The invention further relates to a household appliance, in particular a vacuum cleaner, containing a household appliance as an attachment.

As a household appliance, for example, a header of an electrical device for suction processing of surfaces, for. B. in the form of a nozzle, or the entire device for suction processing of surfaces understood. An example of such a device, also referred to below as a household appliance, is a vacuum cleaner. This is a so-called floor nozzle for suction treatment of floor coverings, especially hard floors or carpets. Basically, with the generic household appliances or attachments in the so-called over-floor area upholstery or the like can be sucked.

Basically, for the purposes of the present invention, the term household appliance not only refers to vacuum cleaners or attachments for vacuum cleaners, but includes any form of particular electrical household appliance, such as devices for cleaning windows or the like. However, however, in the following, since this is the preferred application, reference is made primarily to vacuum cleaners by way of example. The term vacuum cleaner is not limited to electric household vacuum cleaners in the meaning of the invention, but also includes automatically movable devices, in particular floor cleaning robot.

Attachments for devices as described above, for example vacuum cleaners, are often designed for a specific covering to be cleaned, that is, for example, there are special attachments, which are designed especially for the suction treatment of carpets, and other attachments designed specifically for the suction treatment of hard floors are. From the prior art, floor nozzles are also known, which are adjustable and thereby allow the cleaning of different floor coverings and / or cleaning with different intensity.

An adjustment is made for example by changing the ground clearance of the housing bottom in the region of the suction mouth. In this way, if necessary, the user can optimize the intake of coarse material or fine dust, in particular of joints.

For example, it is known from an internal prior art that the chassis, that is to say a supporting housing lower part, of an attachment of a vacuum cleaner is to be supported in a section on a support roller which is pivotably connected to the chassis via a support means carrier. The support means carrier is pivotable about a pivot axis which extends parallel to the housing bottom and thus parallel to the surface to be cleaned. The support roller protrudes in an end position of the support means carrier, hereinafter referred to as the second end position, maximum on the housing underside, so that the distance between the suction mouth and the surface to be cleaned is also maximum. The support roller can be moved back so far into the housing over the support means carrier when it is moved to another end position, hereinafter referred to as the first end position, so that the distance between the suction mouth and the surface to be cleaned is minimal. In the retracted position of the support roller, that is, when the support means carrier is in the first end position, the housing bottom rests, for example, on a brush strip on the surface to be cleaned.

For cleaning certain surfaces, especially scratch-sensitive hard floors, the support means carrier is moved to the second end position to avoid contact of the housing bottom with the surface to be cleaned. In the case of heavy soiling or coarse material or fine dust accumulated deep in joints, it may happen that the suction effect in the area of the suction mouth when the support roll is in the maximum extended position is insufficient to achieve optimum cleaning effect. For this case, it is known to move the support means carrier in an intermediate position between the first end position and the second end position, whereby the support roller protrudes less than in the second end position of the support means carrier on the housing bottom and As a result, the distance between the suction mouth and surface to be cleaned is slightly reduced.

In order to adjust the support means carrier together with the support roller between the individual positions (first end position, intermediate position, second end position), the known attachment device comprises an actuator comprising an engine, which is so connected to the support means carrier and cooperates to complete a movement of the actuator or only partially transferred to the support means carrier and this is pivoted about its pivot axis in the second end position or the intermediate position accordingly. For this purpose, the motor is connected to a spindle on which a hollow shaft designed as an internal thread spindle nut is arranged axially movable. Depending on the direction of rotation of the spindle, the spindle nut is moved axially forward or backward. The spindle nut is in turn resiliently mounted in a spring element which has a rotatably connected to the support means carrier spring receptacle and mounted in the spring receiving helical compression spring. The spindle nut has an outer radially circumferential collar and the spring receiving an inner radially encircling bottom through which the spindle nut protrudes. Between the collar and the bottom of the helical compression spring is arranged.

Now, if the spindle is moved so that the spindle nut moves in the direction of the bottom of the spring receiver, the movement of the spindle nut is transmitted via the helical compression spring on the spring receiver, which in turn transmits the movement on the support means carrier. During a movement of the spindle in the opposite direction of rotation, the spindle nut is correspondingly moved back, wherein the spindle nut has a driver on its end facing away from the spindle, which comes in the return movement with the spring receptacle outside in the region of the soil in contact and thereby the spring receptacle and accordingly the support means carrier moved back.

To bring the support means carrier in the intermediate position and to hold there, a slider is movably mounted in the chassis, which has a surface to be cleaned facing contact surface, by moving the slider, the contact surface can be brought into the range of movement of a projecting portion of the support means carrier. In this position of the slider is caused by the actuator pivotal movement of the support means carrier in the intermediate position blocked by the protruding portion of the support means carrier comes into contact with the contact surface of the slider. Since the operating device is configured so that in operation always causes a stroke (axial movement path of the spindle nut), which is adapted to move the support means carrier from the first end position to the second end position, but the support means carrier in the intermediate position by the slider can be blocked, the helical compression spring is compressed in the spring seat in this case.

The problem is that the hardness of the spring is often such that the forces acting on the spring element forces are not derived by the spring, spindle and spindle nut, but on the support means carrier and the slide. As a result, deforms the slide gate in which the slide is mounted, and the chassis. All components in the power flow (support means carrier, slide, slide gate and chassis) act through their geometric shape and elasticity of the material as a "spring". This in turn has the consequence that an uncontrollable, further stroke is unintentionally released. An exact setting of a defined ground clearance when the support means carrier is in the intermediate position is therefore not possible.

It is therefore an object of the present invention to develop a household appliance of the type mentioned in such a way that a more precise adjustment of a defined ground clearance is made possible.

• – mit einem Gehäuseteil, insbesondere Chassis, der eine Gehäuseunterseite (der zu reinigenden Oberfläche zugewandte Gehäuseseite) aufweist,
• – mit einem Stützmittel, insbesondere einer Stützrolle,
• – mit einem Stützmittelträger, der mit dem Gehäuseteil verbunden ist und an dem das Stützmittel angeordnet ist, wobei der Stützmittelträger relativ zu dem Gehäuseteil zwischen einer ersten Endposition und einer zweiten Endposition bewegbar, insbesondere schwenkbar, ist, wobei das Stützmittel an (relativ zu) der Gehäuseunterseite in der zweiten Endposition maximal und in der ersten Endposition weniger als in der zweiten Endposition oder nicht hervorsteht, und
• – mit einem Bewegungsbegrenzungsmittel, das zwischen einer aktiven Position, in dem es eine Bewegung des Stützmittelträgers in Richtung von der ersten Endposition zur zweiten Endposition in einer Zwischenposition zwischen der ersten Endposition und der zweiten Endposition begrenzt, und einer inaktiven Position bewegbar, insbesondere schwenkbar, ist, in dem es eine Bewegung des Stützmittelträgers von der ersten Endposition bis in die zweite Endposition ermöglicht,

dadurch gelöst, dass das Bewegungsbegrenzungsmittel einen Abstandshalter aufweist, der in der aktiven Position vertikal oberhalb eines Anschlagabschnitts des Gehäuseteils und dazu benachbart angeordnet ist und insbesondere auf diesem gelagert ist.The previously derived and indicated object is according to a first teaching of the present invention in a household appliance, in particular attachment of a vacuum cleaner,

• With a housing part, in particular a chassis, which has a housing underside (the housing surface facing the surface to be cleaned),
• - With a support means, in particular a support roller,
• - With a support means carrier which is connected to the housing part and on which the support means is arranged, wherein the support means carrier relative to the housing part between a first end position and a second end position movable, in particular pivotable, wherein the support means to (relative to) the Housing bottom in the second end position maximum and in the first end position less than in the second end position or not protruding, and
• - With a movement limiting means which is movable between an active position in which it limits a movement of the Stützmittelträgers in the direction from the first end position to the second end position in an intermediate position between the first end position and the second end position, and an inactive position, in particular pivotable in which it allows a movement of the support means carrier from the first end position to the second end position,

characterized in that the movement limiting means comprises a spacer, which is arranged in the active position vertically above a stop portion of the housing part and adjacent thereto and in particular mounted thereon.

In the context of the invention, the term "vertical" or the vertical direction means a direction which extends from the housing underside in the direction of the housing interior, that is to say upwards. In the cleaning operation of the housing part and the entire household appliance is thus arranged vertically above the surface to be cleaned. "Adjacent" preferably means that there is no further component between the adjacent components and the components in particular touch.

By according to the invention, a spacer in the active position of the movement limiting means is arranged vertically above a stop portion of the housing part and stored, can be derived from the support means carrier in the abutment portion against the vertical direction introduced forces downwards (towards the housing bottom) in the housing bottom. It has been shown that a derivative of forces down or to the housing bottom leads to no or substantially no deformation of the Gehauseteils or chassis, since said housing part anyway due to its supporting function - the housing part serves to accommodate all the essential components for the operation of the household appliance - to the housing bottom out not, or substantially not, is deformable. This is ensured by the stiffening elements extending in the interior of the housing in the form of housing walls and / or reinforcing webs or frames, which are formed on the inside of the housing part facing away from the underside of the housing. In particular, a frame extends at least in sections around the opening (receiving opening), through which the support means or the support roller is moved out of the housing part to the outside, that is to the surface to be cleaned. Such a frame alone leads to increased rigidity, which prevents deflection of the housing part and, in particular, its housing floor to the outside or to the surface to be cleaned. Preferably, therefore, the stopper portion is part of a housing in the housing transverse to the housing bottom extending housing web, which is in particular a molded inside the housing frame of the housing part, which surrounds the receiving opening for the support means at least partially or limited. In this case, the contact section which supports the spacer in the active position of the movement limiting means, in particular at the vertically upper end of the housing web is formed.

Since the forces which the support means carrier transmits in its intermediate position on the spacer, are absorbed by the spacer and discharged vertically downwards, in particular in a housing web, deformation of the housing part or chassis is prevented and thereby in the intermediate position of the support means carrier the defined position the support means relative to the housing bottom, even under load (when the support means carrier exerts a high pressure force on the spacer) reliably maintained.

In particular, in the active position of the movement limiting means at least a portion of the support means carrier vertically above the spacer and adjacent thereto can be arranged and in particular on this storable. Namely, when the support means carrier is in its intermediate position, presses the at least one portion of the support means carrier in particular from above the spacer. The spacer is then clamped between the at least one portion of the support member carrier and the abutment portion of the housing part, or the material of the spacer fills the gap between the portion of the support medium carrier and the abutment portion. The at least one section thereby leads at most to a slight deformation (a depression) of the spacer, but not to a deformation of the downstream in the direction of force flow elements (stop section, housing bottom).

According to a further embodiment of the household appliance, in the inactive position (of the movement limiting means), the at least one section of the support means carrier can be arranged vertically above the stop section of the housing part and adjacent to it and in particular can be stored thereon. In other words, the at least one portion of the support means carrier, when it is in the second end position, directly on the stopper portion. In this case, the second end position is then determined independently of the (maximum) stroke or of the end position of the motor by the stopper portion. Alternatively, it is also conceivable that the at least one portion of the support means carrier in the second end position with no stop in contact, but the position of the support means carrier is determined solely by the stroke or the end position of the motor.

According to yet another embodiment of the household appliance according to the invention, the at least one section of the support means carrier is formed in each case by a projection, wherein the respective projection rests on the spacer in the intermediate position of the support means carrier. In particular, it is conceivable that the support means carrier consists of two parallel arranged Stützmittelträgerteilen, which are spaced from each other and together wear the support means or the support roller. In particular, the support means or the support roller between the two support means support parts is arranged. In this case, preferably, each support means carrier part on a portion or projection which comes into abutment in the intermediate position of the support means carrier on the spacer. In this case, the force transmitted from the support means carrier to the spacer force is introduced via a plurality of locations in the spacer and from there into the housing part, resulting in a better distribution of forces.

According to a further embodiment of the household appliance according to the invention, the support means carrier is pivotable about a first pivot axis parallel to the device bottom and orthogonal in particular to the vertical direction, between the first end position and the second end position. The intermediate position is achieved by the pivoting movement. According to another embodiment, it is conceivable that the support means carrier additionally or alternatively performs a translational movement between the first end position and the second end position. The same applies to the movement limiting means, which is also in particular pivotable, namely about a second pivot axis, in particular an angle to the first pivot axis and / or device bottom, preferably orthogonal, second pivot axis. This runs in particular parallel to the vertical direction. By such pivotal movement, the movement limiting means is pivotable between the active position and the inactive position. In principle, it is also conceivable here that the movement limiting means additionally or alternatively performs a translatory movement between the active position and the inactive position. It is preferred that the movement of the support means carrier between the first end position and the second end position in a first plane and the movement of the movement limiting means between the active position and the inactive position in a second plane extending to the first plane at an angle, in particular orthogonal, is arranged.

In the event that the movement limiting means is pivotally mounted, it is provided according to a further embodiment, that the movement limiting means comprises a first lever arm extending from the second pivot axis, wherein a first portion of the first lever arm forms the spacer. Preferably, a second portion of the first lever arm extends from the spacer to the second pivot axis, wherein the second portion in particular angled, preferably orthogonal, extends to the first portion of the lever arm. It is conceivable that the first section and / or second section, in particular on its side facing away from the housing underside, at least one reinforcing element, in particular a reinforcing rib, which preferably over the entire second portion and at least partially over the first portion extends.

To actuate the movement limiting means, this is at least partially accessible from the outside of the housing or connected to a mechanical or electrical switch, which is accessible from the outside of the housing. "Accessible" means that an operator can reach and manipulate the corresponding component (movement limiting means or switch) from the outside of the device directly or with an aid so that the movement limiting means can be moved between the active and the inactive position. In the event that the movement limiting means is pivotable, provision is made, in particular, for the movement limiting means to have a second lever arm extending from the second pivot axis (in particular opposite to the first lever arm), which cooperates in particular with a mechanical or electrical switch, in particular slider or toggle switch , which is preferably accessible from the underside of the device.

According to yet another embodiment of the household appliance according to the invention this further comprises an actuating device which drives the support means carrier in such a way or is connected and cooperates such that the support means carrier between the first end position and the second end position is movable. Such an actuating device has, in particular, a motor which, on actuation, that is to say in operation or switched-on state, regardless of whether it is to be moved from the first end position of the support means carrier to the second end position or the intermediate position, delivers the same power and / or causes the same (maximum) stroke of the actuator. In other words, the engine moves from its initial position, in which the support means carrier is in its first end position, always in the same end position. In the end position, the motor ensures that the support means carrier reaches its second end position. When the engine is returned to its original position, the support means carrier thereby reaches its first end position again.

Also for moving the support means carrier in its intermediate position, the motor is preferably moved in operation in its end position, with the support means carrier could basically be moved to the second end position. However, in this case, as explained above, the movement of the support means carrier from the first end position in Blocked the direction of the second end position in the intermediate position by the spacer by the movement limiting means has been previously moved to the active position. In this case, the unneeded, further stroke of the engine is preferably accommodated by a compressible, elastic component, in particular a spring, preferably helical compression spring, which is mounted in a receptacle, for example a spring receptacle, connected to the support means carrier, in particular rotatably connected. During the movement of the motor from the starting position to its end position, the stroke movement caused by the motor is first transmitted via the elastic component or the spring to the receptacle and from the receptacle to the support means carrier until the support means carrier has moved from the first end position to its intermediate position , Once the support means carrier is blocked in its intermediate position by the spacer, the recording of the elastic member or the spring moves automatically no longer, whereby the elastic member or the spring is compressed in the recording until the engine reaches its end position Has.

The movement limiting means provided according to the invention is particularly advantageous in connection with an actuating device as defined above, in which a motor always delivers the same power and / or always causes the same stroke, since in this case no separate control of the actuating device for setting different stroke paths is necessary.

Basically, it is conceivable to provide a motor control that allows different strokes. It is also conceivable to provide a reed switch in itself relative to each other moving components of the actuator. It is also conceivable to use a stepper motor as the motor in order to realize different stroke paths.

The object is further achieved according to a second teaching of the present invention by a household appliance, in particular a vacuum cleaner (household vacuum cleaner), comprising a household appliance as previously defined as an attachment.

There are now a variety of ways to design and further develop the household appliance according to the invention and the household appliance according to the invention. In this regard, reference is made, on the one hand, to the claims subordinate to patent claim 1, and, on the other hand, to the description of exemplary embodiments in conjunction with the drawing. In the drawing show:

1 1 is a schematic perspective view of a household appliance in the form of a household vacuum cleaner with a household appliance according to the invention as an attachment;

2a) C) schematic partial views of a household appliance according to the invention with differently set ground clearances,

3 a schematic partial view of the interior of a household appliance for the household device from 1 with inactive movement limiting means,

4 a schematic partial view of the interior of the household appliance for the household device 1 with active movement limiting means and

5 another partial view of the interior of the household appliance 1 out 4 with active movement limiting means.

In 1 is as a preferred application of the household appliance according to the invention 1 a household device in the form of a vacuum cleaner 3 , in particular electric household vacuum cleaner, shown. The vacuum cleaner 3 is designed as a hand-held handle. This has in the present embodiment, the structure described below.

The vacuum cleaner 3 first has a base unit 22 which preferably has an electric motor (not shown) for a suction / blower unit. On the base unit 22 is a designated for receiving the vacuumed dust collecting dust collection space 23 docked. This preferably includes a dust filter bag (not shown).

The power supply in the base unit 22 integrated electric motor via an electric cable 24 which also includes the engine described below 21 an actuating device 20 powered. In principle, it is conceivable to supply the motors with power via a rechargeable battery, whereby no electric cable is used 24 would be required.

Next is on the base unit 22 a plug-in receptacle for a device handle 25 intended. This has a handle at the end 26 on.

For soil cultivation is the basic device 22 fluidly on its underside (opposite to the vertical direction V) with a header 2 , here the household appliance according to the invention 1 forms, connected. The attachment 2 is in the form of a suction nozzle, here a floor nozzle formed. The embodiment shows a floor nozzle with a height-adjustable support means in the form of a support roller 5 ,

As in the 2a) to c) is shown schematically, is the support roller 5 in a housing part 4 , whose housing base 4a the Device bottom forms, arranged movable. The support roller 5 is to a support means carrier 6 attached to the housing part 4 is mounted pivotably about a pivot axis X1. The support means carrier 6 can be pivoted between a first end position I via an intermediate position III to a second end position II, wherein the support roller 5 in each of these positions I, II and III differently far from the housing part 4 protrudes downwards or against the vertical direction V. As a result, the ground clearance a, that is, the vertical distance between the housing bottom 4a and flooring 27 in the region of the center or the axis of rotation X3 of the support means 5 , changed. In the first end position I of the support means carrier 6 is the ground clearance a minimal, in the second end position II, the ground clearance a maximum and in the intermediate position III, the ground distance a between the value for the first end position I and the value for the second end position II. By changing the ground clearance, the fine dust absorption , but also the coarse material intake, from the floor covering 27 and in particular from joints in the floor covering 27 be optimized.

The following is based on one in the 3 to 5 illustrated embodiment, as the support means carrier 6 into its first end position I, its intermediate position III and its second end position II can be brought.

So is an actuator 20 provided that the support means carrier 6 between the individual positions I, II and III moves (pivots). The actuating device 20 has an engine 21 on, starting from its initial position always moves its end position when actuated. In the end position reaches the support means carrier 6 its second end position II or, if the support means carrier 6 by a movement limiting means which will be described later 7 is blocked, its intermediate position III.

The motor 21 is designed here as a spindle motor and has a spindle 28 (Threaded rod) and designed as a hollow shaft with internal thread spindle nut 29 on, with the spindle nut 29 depending on the direction of rotation of the spindle 28 is moved axially forward or backward. The spindle nut 29 is again in a spring element 30 resiliently mounted, which one with the support means carrier 6 rotatably connected sleeve-shaped spring receptacle 31 and a coil spring mounted in the spring receiver 32 having.

The spindle nut 29 has an outer radially circumferential collar and the spring retainer 31 a radially inner circumferential base through which the spindle nut 29 protrudes. The helical compression spring 32 is arranged compressible between the collar and the bottom.

Now the spindle 28 placed in a rotation through which the spindle nut 29 forward (in the direction of the spring retainer 31 ) is moved, the movement of the spindle nut 29 over the helical compression spring 32 on the spring holder 31 transferred, in turn, with the support means carrier 6 is rotatably connected and their movement on the support means carrier 6 transfers.

As already explained, the spindle nut leads 29 on actuation of the engine 21 from the starting position always the same stroke, that is, the stroke is always the same, regardless of whether the support means carrier 6 is moved to the second end position II or the intermediate position III. So now the prop carrier 6 can not be moved beyond the intermediate position III in the direction of the second end position II, according to the invention is a movement limiting means 7 with a spacer 8th provided before the operation of the engine 21 from the starting position, when the prop carrier 6 so still in its first end position 1 located horizontally on a stop section 9 of the housing part 4 can be moved. This is done by the movement limiting means 7 is pivoted about a second pivot axis X2 from an inactive position B to an active position A.

In the active position A is the spacer 8th within the range of motion of two sections 10 of the support means carrier 6 , The two sections 10 are each as a lead 11 trained and come in the movement of the support means carrier 6 from the first end position I in the direction of the second end position II with the spacer 8th in contact, causing the prop carrier 6 is blocked in the intermediate position III. The spacer 8th is then between the two protrusions 11 and the stopper section 9 sandwiched, with the two projections 11 in the vertical direction V on the spacer 8th rest on the upper side and initiate a force in it, resulting from the fact that the engine 21 and thus the spindle nut 29 is moved further into the respective end position and accordingly of the spindle nut 29 a compressive force on the spring element 30 on the prop carrier 6 acts. The from the projections 11 in the spacer 8th initiated force is in the spacer 8th picked up and distributed and then flat in the stop section 9 of the housing part 4 derived vertically below the spacer 8th is arranged and the spacer 8th takes up vertically. This condition is in 4 and 5 illustrated and allows the support roller 5 in the in 2 B ), in which the vertical distance a between the housing bottom 4a and flooring 27 something lower, for example, by 2 mm less than the maximum ground clearance in 2c ). For example, the ground clearance a in the intermediate position III is in a range of 2 to 4 mm, preferably in a range of 2.5 to 3.5 mm, and is particularly preferably 3 mm.

To ensure that the support means carrier 6 not from the spacer 8th is blocked, but can be moved freely in its second end position II, the movement limiting means 7 be moved from the active position A to the inactive position B. The spacer 8th is then outside the range of movement of the two sections 10 or projections 11 of the support means carrier 6 , The support means carrier 6 can then be pivoted beyond the intermediate position III, until the two projections 11 on the upper side with the stop section 9 of the housing part 4 get in touch. This condition is in 3 illustrated and allows the support roller 5 to extend to maximum, as in 2c ) is shown.

At the stopper section 9 It is the vertical upper part of a housing inside transverse to the housing bottom 4a extending housing web 12 , the part of a frame 33 that's the proppant 5 or a receiving opening through which the support means can be moved back and forth surrounds.

The movement limiting means has a first lever arm extending from the pivot axis X2 13 and a second lever arm extending in the opposite direction from the pivot axis X2 18 on. The first lever arm 13 has a first section 14 and one between the first section 14 and the pivot axis X2 arranged second portion 15 on, with the first section 14 and the second section 15 are substantially orthogonal to each other and orthogonal to the vertical direction V. The first paragraph 14 in turn, forms the spacer 8th , The second section 15 again has a vertical upper side reinforcing element 16 on. This is a reinforcing rib 17 going through the second section 15 and part of the first section 14 extends.

The second lever arm 18 works with a mechanical switch 18 in the form of a slider or toggle switch together, from the bottom of the device 4a accessible to the user. By pressing the switch 19 becomes the second lever arm 18 pivoted about the pivot axis X2, with this movement on the first lever arm 13 is transmitted, the example here with the second lever arm 18 is made in one piece. In this way, the spacer becomes 8th either in the range of motion of the support means carrier 6 or the sections 10 moves (active position A of the movement limiting means 7 . 4 and 5 ) or moved out of the range of motion (inactive position B of the movement limiting means 7 . 3 ).

LIST OF REFERENCE NUMBERS

1

household appliance

2

header

3

vacuum cleaner

4

Housing part, in particular chassis

4a

Housing bottom

5

Supporting means, in particular supporting roller

6

Proppant carrier

7

Motion limiting means

8th

spacer

9

stop section

10

Section of the prop carrier

11

Projection of the support means carrier

12

housing web

13

first lever arm

14

first section of the first lever arm

14a

Top of the first section

15

second section of the first lever arm

15a

Top of the second section

16

reinforcing element

17

reinforcing rib

18

second lever arm

19

switch

20

actuator

21

engine

22

basic unit

23

Dust collection chamber

24

electric cable

25

device handle

26

handle

27

Flooring

28

spindle

29

spindle nut

30

spring element

31

spring mount

32

Helical compression spring

33

frame

I

first end position of the support means carrier

II

second end position of the support means carrier

III

Intermediate position of the support means carrier

A

active position of the movement limiting means

B

inactive position of the movement limiting means

X1

first pivot axis

X2

second pivot axis

X3

Center or rotation axis of the support means

V

vertical direction

a

ground clearance

Claims (13)

Household appliance ( 1 ), in particular front attachment ( 2 ) of a vacuum cleaner ( 3 ), - with a housing part ( 4 ), which has a housing base ( 4a ), - with a proppant ( 5 ), - with a prop carrier ( 6 ), which is connected to the housing part ( 4 ) and on which the proppant ( 5 ), wherein the support means carrier ( 6 ) relative to the housing part ( 4 ) is movable between a first end position (I) and a second end position (II), wherein the support means ( 5 ) on the underside of the housing ( 4a ) in the second end position (II) maximally and in the first end position (I) less than in the second end position (II) or not protruding, and - with a movement limiting means ( 7 ) between an active position (A) in which there is a movement of the support means carrier ( 6 ) is limited in the direction from the first end position (I) to the second end position (II) in an intermediate position (III) between the first end position (I) and the second end position (II), and an inactive position (B) is movable in the there is a movement of the support vehicle ( 6 ) from the first end position (I) to the second end position (II), characterized in that the movement limiting means (11) 7 ) a spacer ( 8th ), which in the active position (A) vertically above a stop portion ( 9 ) of the housing part ( 4 ) and adjacent thereto. Household appliance ( 1 ) according to claim 1, characterized in that in the active position (A) at least one section ( 10 ) of the support vehicle ( 6 ) vertically above the spacer ( 8th ) and adjacent thereto can be arranged and in particular on this storable. Household appliance ( 1 ) according to claim 2, characterized in that in the inactive position (B) the at least one section ( 10 ) of the support vehicle ( 6 ) vertically above the abutment portion ( 9 ) of the housing part ( 4 ) and adjacent thereto can be arranged and in particular on this storable. Household appliance ( 1 ) according to one of the preceding claims, characterized in that the abutment portion ( 9 ) Part of a housing inside transverse to the housing bottom ( 4a ) extending housing web ( 12 ) of the housing part ( 4 ), wherein the abutment portion ( 9 ) in particular at the vertically upper end of the housing web ( 12 ) is trained. Household appliance ( 1 ) according to one of the preceding claims, characterized in that the at least one section ( 10 ) of the support vehicle ( 6 ) each of a projection ( 11 ), the respective projection ( 11 ) in intermediate position (III) of the support vehicle ( 6 ) on the spacer ( 8th ) rests. Household appliance ( 1 ) according to one of the preceding claims, characterized in that the support means carrier ( 6 ) to the bottom of the device ( 4a ) parallel first pivot axis (X1) between the first end position (I) and the second end position (II) is pivotable and / or the movement limiting means (X1) 7 ) about a second pivot axis (X2), in particular one to the first pivot axis (X1) and / or the underside of the device ( 4a ) angular, preferably orthogonal, second pivot axis (X2), between the active position (A) and the inactive position (B) is pivotable. Household appliance ( 1 ) according to claim 6, characterized in that the movement limiting means ( 7 ) a first lever arm extending from the second pivot axis (X2) ( 13 ), wherein a first section ( 14 ) of the first lever arm ( 13 ) the spacer ( 8th ). Household appliance ( 1 ) according to claim 7, characterized in that a second section ( 15 ) of the first lever arm ( 13 ) of the spacer ( 8th ) to the second pivot axis (X2), wherein the second section (X2) 15 ) in particular at an angle, preferably orthogonal, to the first section ( 14 ) of the first lever arm ( 13 ) runs. Household appliance ( 1 ) according to claim 8, characterized in that the first section ( 14 ) and / or second section ( 15 ), in particular at its from the housing bottom ( 4a ) facing away ( 14a . 15a ), at least one reinforcing element ( 16 ), in particular a reinforcing rib ( 17 ), preferably over the entire second section (FIG. 15 ) and at least in sections about the first section ( 14 ). Household appliance ( 1 ) according to one of claims 6 to 9, characterized in that the movement limiting means ( 7 ) a second lever arm extending from the second pivot axis (X2) ( 18 ), in particular with a mechanical or electrical switch ( 19 ), preferably from the underside of the device ( 4a ) is accessible. Household appliance ( 1 ) according to one of the preceding claims, characterized in that the domestic appliance ( 1 ) an actuating device ( 20 ) having the support means carrier ( 6 ) such that the support means carrier ( 6 ) between the first end position (I) and the second end position (II) is movable. Household appliance ( 1 ) according to claim 11, characterized in that the Actuating device ( 20 ) an engine ( 21 ), which, when actuated, regardless of whether starting from the first end position (I) of the support means carrier ( 6 ) is to be moved to the second end position (II) or the intermediate position (III), outputs the same power and / or the same stroke of the actuating device ( 20 ) causes. Household appliance, in particular vacuum cleaner ( 3 ) containing a household appliance ( 1 ) according to one of the preceding claims as an attachment ( 2 ).

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