DE102014107812A1 - Vacuum cleaner nozzle for a vacuum cleaner - Google Patents

Abstract

The invention relates to a vacuum cleaner nozzle for a vacuum cleaner, wherein the vacuum cleaner nozzle has a suction mouth (9) and is designed as a preferably removable attachment (8) of a vacuum cleaner, the vacuum cleaner nozzle having a tilting joint (7) with at least one tilting axis (A), wherein the Vacuum cleaner nozzle about the tilting axis (A) is pivotable relative to a preferably horizontal bottom surface. In order to specify a vacuum cleaner nozzle, which can reliably achieve a favorable suction result especially when moving back the vacuum cleaner, it is proposed that at least one overcome resistance in the tilt joint (7) is formed, which overcome resistance, the mobility of the tilting joint (7) in a working range of 20 ° to 60 ° relative to the bottom surface decreases.

Description

The invention relates to a vacuum cleaner nozzle for a vacuum cleaner, wherein the vacuum cleaner nozzle has a suction mouth and is designed as a preferably removable attachment of a vacuum cleaner, the vacuum cleaner nozzle having a hinge with at least one tilt axis, wherein the vacuum cleaner nozzle is pivotable about the tilt axis relative to a preferably horizontal bottom surface ,

Such vacuum cleaners and vacuum cleaner nozzles designed as a front attachment have already become known in many respects. It is for example on the EP 0 616 790 B1 , the WO 2006/005722 A1 and the EP 1 214 902 A2 directed.

In vacuum cleaners of the type mentioned, the vacuum cleaner nozzle is usually advanced and then withdrawn in the course of use by means of the vacuum cleaner handle. Both the Vorbewegen (Vorhub) and the retraction (return stroke) of the vacuum cleaner nozzle as good as possible suction result is desired. Upon retraction of the vacuum cleaner nozzle, it may happen that some lifting of the vacuum cleaner nozzle occurs, which results in a tilting. This can lead to excessive suction of the suction mouth on the floor to be sucked.

Based on the stated prior art, the invention is concerned with the task of specifying a vacuum cleaner nozzle, which can achieve a favorable suction result reliably especially when moving back the vacuum cleaner.

This object is achieved according to a first teaching of the invention in that at least one overcoming resistance is formed in the tilting joint, which conquerable resistance reduces the mobility of the tilting joint in a working range of 20 ° and 60 ° relative to the bottom surface.

Advantageously, a firm suction of the suction mouth is avoided on the ground when a given critical angle is not exceeded.

Overcoming the insurmountable resistance requires a force from a user, so that a pivoting of the tilting joint from the work area for the user is noticeable. In a conventional lowering of the vacuum cleaner handle or the vacuum cleaner in the return stroke, the user experiences a hindrance to a further lowering of the vacuum cleaner handle or the vacuum cleaner in the working area of the tilting joint. Conveniently, the overcome resistance impedes the mobility of the tilting joint, so that when lowering the vacuum cleaner handle or the vacuum cleaner directed from the ground force acts on the suction mouth. Preferably, thereby a fixed eyes of the suction mouth is avoided on the floor.

The working area determining angle may preferably be adjustable depending on the design of the vacuum cleaner nozzle. It is preferred that the working area is given by an angular range of 30 ° to 50 ° relative to the ground. The working range is preferably specified by an angle range of 5 ° to 45 °, and especially preferably 37 ° to 41 °, based on the floor. It is possible that the working range is indicated by an angle range or an angle of 39 ° or approximately 39 °.

The vacuum cleaner nozzle may be pivotable from 0 ° to at least 80 ° with respect to the floor surface in an angular range (handling area) containing the working area. Preferably, a tilting resistance of the tilting joint in the angular range outside the working range is less than the tilting resistance of the tilting joint within the working range.

It is also possible to provide a reversibly overcome parking resistance, which parking resistance is overcome when pivoting the tilting joint out of the handling area into a parking area adjoining the handling area. In this case, the tilting joint preferably forms an angle of at most 90 ° relative to the floor surface in the handling area, the tilting joint forming an angle of preferably at least 90 ° in relation to the floor in the parking area.

It is preferred that the surmountable resistor and / or the parking resistor are each formed in the tilting joint.

A first part of the tilting joint is preferably tiltably mounted relative to a coupling element of the tilting joint, wherein the first part is rigidly connected to the portion of the vacuum cleaner nozzle containing the suction mouth. In the work area, the mobility of the tilting joint is reduced by preferably a coupling element-side spring element is tensioned by a complementary to the spring element, arranged on the first part bearing element.

Angular positions deviating from the angular range of the working range are, according to one embodiment, capable of overcoming one in particular in addition to the weight of the Staubsaugerstiels given spring force achievable. Depending on a forward or backward movement of the vacuum cleaner nozzle, it can introduce a resistance into the movement path of the tilting joint and, when moving back, help to prevent it from exceeding the angular range of the working area. The overcoming of the resistance is linked in such an embodiment to a direction of movement of the vacuum cleaner.

It is preferred that the conquerable resistance is formed in the tilting joint itself.

The tilting joint is preferably designed as a joint that allows only a tilting or pivoting movement. It is preferred that the vacuum cleaner and / or the vacuum cleaner handle is rotatable about a further axis, preferably about its longitudinal axis. According to one embodiment, this movement is transferable to the vacuum cleaner nozzle via a further joint formation. It is within the scope of the invention that the tilting joint is part of a rotary / tilting joint.

Said bottom surface of the vacuum cleaner nozzle may be given by a plane which can be laid thereby through the bottom plate of the vacuum cleaner nozzle. Optionally, it may be given by an opening area of the suction mouth.

The resistance is preferably overcome by the application of an additional force and preferably only by applying an additional force. This additional force is given in the direction of a larger angle in addition to the weight of the vacuum cleaner handle. In the tilting joint, a frictional force can be overcome outside a singular angular position in which exactly the conquerable resistance is arranged, which, for example, prevents a vacuum cleaner handle from falling down virtually freely when released. This frictional force can also be overcome by a movement from a smaller angle to a larger angle. Conveniently, the angle of the working area is approximately 39 ° when the working area is formed by a singular angular position.

The tilting joint can assume a parking position characterized by an insurmountable parking resistance, in which the tilting joint, after overcoming the parking resistance, is at an angular orientation approximately at right angles to the said bottom surface. In practice, the angular orientation of the tilting joint in the parking position is not a strict right angle, but rather an angle that is at a strict right angle in the range of usually +/- 10 °. In particular, an obtuse angle, ie greater angle than 90 ° is preferred. The tilting joint can also be moved in the parking position by a few degrees. The parking resistance is formed on a boundary of the parking position corresponding angular range associated with the surmountable resistance, if given.

Contrary to the surmountable resistance, which allows free movement of the tilting joint between an approximately ground-parallel alignment and the parking position, the parking resistor preferably limits a detent position. The angle of the tilting joint, which corresponds to the parking position, is thus fixed or fixed in the narrow angle range mentioned. After overcoming the parking resistance of the vacuum cleaner handle preferably runs against a stop, which means a no longer surmountable angular position. For example, two to five degrees of degree of mobility can also be given in the parking position. The tilting joint can not be removed automatically from the parking position. It requires the power-driven movement by the user.

After leaving the parking position to reach the working area in which the overcome resistance, preferably, with the exception of the above-mentioned friction, free mobility of the vacuum cleaner handle is given. In the same way, after overcoming (starting from the parking position) of the surmountable resistance such free mobility of the tilting joint is given preference.

An end position of the tilting joint corresponds with a use of the vacuum cleaner preferably a resting of the vacuum cleaner handle or the vacuum cleaner on a floor over which the vacuum cleaner is moved.

The parking resistance is preferably greater than the surmountable resistance, d. H. It requires a greater force to overcome than the surmountable resistance. Thus, initially a difference between the parking position and the surmountable resistance is given to the user. The overcome resistance is operationally often overcome by the user. In particular, when the vacuum cleaner handle or the vacuum cleaner is actually to be pivoted in the parking position. It is preferred that - starting from the parking position - in the direction of a smaller angle, the surmountable resistance can be overcome solely by a weight force of the vacuum cleaner stem.

The force that a user has to apply to overcome the surmountable resistance or the parking resistance, initially depends on where he on the vacuum cleaner handle or vacuum cleaner acts. With usual action in the end region of the vacuum cleaner handle or the vacuum cleaner, when a handle is provided, over the handle, the force is preferably chosen so that it is oriented on the weight of the attachment. This can mean a force of 5 to 20 N, for example. The lever arm, which results from the user's attack with distance to the tilt axis, can reduce the force corresponding to the user. The force required to overcome the insurmountable resistance preferably corresponds to one quarter to two thirds of the force required to overcome the park resistance.

In absolute terms, a movement to overcome the resistance to be overcome may be a force of, for example, 2 to 10N.

The tilting joint may have a resilient portion which cooperates with a (first) overflowable projection to create the (first) overcome resistance. Likewise, a second overflowable projection for the parking resistor may be formed.

The resilient portion is preferably formed mitdrehend in the coupling portion of the tilting joint, while the first and / or second overflowable projection is fixedly provided in the tilting joint or are. Thus, the first and second overflowable projection are preferably provided circumferentially offset from one another. The arrangement of the overflowable projections in the co-rotating part of the joint and the federbaren portion in the fixed part of the joint is possible.

It may be formed a resilient portion and two overflowable projections. In principle, it is possible that an overflowable projection and two resilient sections are formed. According to one embodiment, two resilient sections and two overflowable projections may be formed. To achieve the different resistances, the overflowable projections can protrude differently far into a path of movement of the or of the resilient sections. Alternatively or additionally, resilient portions may be formed with different spring characteristic.

Furthermore, the invention with reference to the accompanying drawings, which illustrates only one embodiment, explained. Hereby shows:

1 a side view of a vacuum cleaner with vacuum cleaner nozzle in the park position;

2 a representation according to 1 upon retraction of the vacuum cleaner, the vacuum cleaner handle being in an orientation below a predetermined acute angle;

3 an enlarged side view of the article according to 1 with open tilting joint;

4 a further enlarged view of the open tilting joint with overcome resistance and a parking resistor, wherein the vacuum cleaner stem is in an angular orientation, which is below the working area;

5 a representation according to 4 wherein the vacuum cleaner handle is in a position above the work area and below the parking position;

6 an enlarged view according to 4 respectively 5 , wherein the vacuum cleaner handle in the parking position according to 1 respectively 3 is; and

7 a schematic representation of an embodiment in which the same projection cooperates with two different spring elements.

Shown and described is a vacuum cleaner 1 with a vacuum cleaner handle 2 , End of the vacuum cleaner handle 2 is a handle 3 educated.

In the embodiment of the vacuum cleaner handle 2 also a power cord 4 with a power plug 5 out.

The vacuum cleaner handle 2 has a longitudinal extent with a central axis D. In a device part 6 , which in the embodiment with the Staubsaugerstiel 2 is firmly connected and accordingly in a pivoting movement with the Staubsaugerstiel 2 pivoted, is housed in the embodiment and preferably a filter chamber and a fan motor.

The vacuum cleaner handle 2 is about a tilting joint 7 with a header 8th connected. The tilt joint 7 is on the attachment 8th educated. The attachment 8th is by means of the vacuum cleaner handle 2 for cleaning, in particular suction and possibly knocking a soil feasible. The attachment 8th is in the embodiment as a suction mouth 9 having trained vacuum cleaner nozzle.

The attachment 8th is removable to the (hull) vacuum cleaner 1 connected. The vacuum cleaner 1 is preferably and according to the embodiment in a coupling element of the tilting joint 7 reversibly inserted.

Above the tilting joint 7 is in the embodiment still another Gelenkausformung 10 educated. This can the vacuum cleaner handle 2 to be turned around. In the embodiment of the vacuum cleaner 1 Although not immediately about its longitudinal axis D, but on a circular path, the (related approximately to the handle 3 ) can describe a conical surface, rotatable. The insertability can, and is provided in the embodiment so, the handle side of the tilting joint 7 , Concretely hand grip side of the further Gelenkausformung 10 be provided in the coupling element.

As it turns out in more detail 2 shows, the tilting joint has 7 a Kippgelenkachse A, which in the side view according to 2 punctiform images. With a pivoting of the Staubsaugerstiels 2 the vacuum cleaner handle rotates 2 - Based on its longitudinal extent - to the tilting joint axis A.

At the vacuum cleaner 1 are from the vacuum cleaner handle 2 in the course of a pivoting about the tilting joint axis A from an approximately ground-parallel (first) end position to run over in the embodiment and preferably realized parking position two overcome resistances. A surmountable resistance is to be crossed at a predetermined acute angle α. The acute angle α refers to a horizontal plane E through the Kippgelenkachse A, parallel to a bottom surface B of the attachment 8th or a level of the suction mouth 9 is oriented and the longitudinal axis D of the Staubsaugerstiels 2 , which corresponds here to the longitudinal extent, cuts. This is in 2 shown.

When lifting the vacuum cleaner handle 2 - Starting from an acute angle, which is smaller than the angle α - beyond this angle α addition, a user must exert a certain force so that it is given an indication when used in certain operating conditions, such as here the withdrawal of the vacuum cleaner 1 , the vacuum cleaner handle 2 not raise further. The angle range in which the user has an increased force to pivot the vacuum cleaner handle 2 has to spend, according to the embodiment, the working range of the vacuum cleaner 2 , Due to the conquerable resistance, the user is not hindered to raise the vacuum cleaner or to lay down on the ground.

In the described vacuum cleaner 1 In addition, a parking resistance is provided, the user in a movement over a defined in the same way, relative to the angle α corresponding larger angle β at a lifting of the Staubsaugerstiels 2 feel. The angle β is determined in the same way as described above with respect to the angle α. This is the resistance to be overcome when the vacuum cleaner handle 2 should be placed in the parking position realized here. The parking resistance is preferably in an almost right angle, +/- 10 °, based on the position of the vacuum cleaner handle 2 arranged.

As it turns out in more detail 3 results in the embodiment in a movement of the Staubsaugerstiels 2 about the tilting joint axis A co-rotating with the Staubsaugerstiel 2 one or more resilient sections 11 educated. In the exemplary embodiment, there are three equally circumferentially spaced resilient sections 11 and associated with each one projection, so in the embodiment three projections 12 , which form the parking resistance and - in addition - an overflowable projection 13 , which forms the surmountable resistance.

The division into three resilient sections 11 and three equally circumferentially spaced projections 12 Accordingly, this results in a summation of the force that occurs virtually simultaneously overcoming each of the protrusions 12 is required. It could only be a lead 12 that with a springy section 11 cooperates, be provided, which then, as far as the resilient portion 11 is left unchanged, according to further protruding from radially outward to the tilting axis A can be formed out. In any case, it is preferred that the parking resistance requires a higher force to overcome than the overcome resistance.

An overflowable projection 12 and or 13 can, as in the embodiment, be designed as a ramp overflowable on both sides.

A resilient section 11 can further, as given in the embodiment, immediately be formed as a plastic injection molded part. In the cross-sectional view, in which the tilting joint axis A is punctiform, the resilient portion 11 be formed by a closed, rounded at its ends formed circular shape. On a long side 14 of the resilient section 11 can be a cooperative advantage 15 be formed with the first projection 12 and / or the second projection 13 can interact.

In the parking position according to 3 respectively 6 are the resilient sections 11 , moving in the figures counterclockwise, causing a movement of the vacuum cleaner handle 2 towards a larger angle, in each case behind the second overflowable projections 12 hazards. Towards a larger angle is the vacuum cleaner handle 2 in this parking position by means of the tilting joint 7 at a stop 20 to who is here and preferred through a housing edge of the attachment 8th is formed.

In the angular orientation of the vacuum cleaner handle 2 as 4 is based on the associated resilient portion 11 also the overflowable projection 13 overcome. Starting from the parking position - based on the 4 - A movement of the resilient sections 11 , and also the vacuum cleaner handle 2 in total, clockwise. The vacuum cleaner handle 2 is correspondingly in an orientation which is smaller than the angle α.

In the embodiment of the 5 is the vacuum cleaner handle 2 in an orientation that is greater than the angle α, but smaller than the predetermined angle for the parking position of the parking angle β.

The presentation of the 6 again corresponds to the representation of 3 , only in enlarged form. The vacuum cleaner handle 2 is also in the parking position here.

In the embodiment of the 7 is shown a variant in which only an overflowable projection 12 is provided, but two with this one overflowable projection 12 interacting sections 11 , The resilient sections 11 are formed according to this embodiment with different spring stiffness. Thus, for the one resilient portion 11 to overflow the projection 12 a larger force and for the other resilient section 11 a smaller force (only) required.

Overall, for joint formation of the stem joint 7 It can be seen that the geometric axis A is a fixed stub axle 16 interspersed. To this stub axle 16 turns in the embodiment with a vacuum cleaner handle 2 co-rotating pipe section part 17 by means of a socket 18 , which is preferably interposed, on the stub axle 16 is rotatably mounted. Regarding the attachment 8th in turn provided fixed in the embodiment, a concentric with the axis A trained drum 19 , the inside one or three overflowable projections 12 . 13 having.

Will the vacuum cleaner handle 2 from the in 1 illustrated parking position in the in 2 pivoted position pivoted, so first the parking resistance is overcome, so that the vacuum cleaner 1 ready for use. Another lowering of the vacuum cleaner handle 2 especially during the return stroke ensures that the resilient sections 11 in the working area of the tilting joint 7 with the overflowable protrusions 13 interact so that the suction mouth 9 of the attachment part 8th pushed away from the ground. The resulting moment becomes a chassis or casters 21 of the attachment part 8th held on the ground and a tight eye of the suction mouth 9 on the floor is avoided.

LIST OF REFERENCE NUMBERS

1

vacuum cleaner

2

vacuum cleaner handle

3

handle

4

Power cord

5

power plug

6

equipment part

7

tilting joint

8th

header

9

saugmund

10

Gelenkausformung

11

(federable) section

12

Overflowable projection

13

Overflowable projection

14

long side

15

Cooperating projection

16

stub axle

17

Tubular part

18

Rifle

19

drum

20

attack

21

caster

α

angle

β

angle

A

Kippgelenkachse

B

floor area

D

longitudinal axis

e

level

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0616790 B1 [0002]
• WO 2006/005722 A1 [0002]
• EP 1214902 A2 [0002]

Claims (10)

Vacuum cleaner nozzle for a vacuum cleaner ( 1 ), wherein the vacuum cleaner nozzle a suction mouth ( 9 ) and as a preferably removable attachment ( 8th ) of a vacuum cleaner ( 1 ), wherein the vacuum cleaner nozzle a tilting joint ( 7 ) with at least one tilt axis (A), wherein the vacuum cleaner nozzle is pivotable about the tilting axis (A) relative to a preferably horizontal bottom surface, characterized in that at least one overcoming resistance in the tilting joint ( 7 ), which overcome resistance the mobility of the tilting joint ( 7 ) in a working range of 20 ° to 60 ° relative to the bottom surface decreases. Vacuum cleaner nozzle according to claim 1, characterized in that the mobility of the tilting joint ( 7 ) is reduced in a working range of 30 ° and 50 °, preferably from 35 ° to 45 ° relative to the bottom surface. Vacuum cleaner nozzle according to one of claims 1 or 2, wherein the vacuum cleaner nozzle is pivotable in a work area containing angle range (handling area) from 0 ° to at least 80 ° relative to the bottom surface, wherein a tilting resistance of the tilting joint ( 7 ) in the angular range outside the working range is less than the tilting resistance of the tilting joint ( 7 ) is within the workspace. Vacuum cleaner nozzle according to one of claims 1 to 3, characterized in that a reversible overcoming parking resistance is provided, which parking resistance during pivoting of the tilting joint ( 7 ) is overcome from the handling area into a park area adjoining the handling area, the tilting joint ( 7 ) forms in the handling area an angle of at most 90 ° relative to the bottom surface and wherein the tilting joint ( 7 ) forms an angle of preferably at least 90 ° relative to the ground in the parking area. Vacuum cleaner nozzle according to one of claims 1 to 4, characterized in that the overcoming resistance and / or the parking resistor preferably in each case in the tilting joint ( 7 ) are formed. Vacuum cleaner nozzle according to one of claims 1 to 5, wherein a first part of the tilting joint ( 7 ), which first part rigidly with the suction mouth ( 9 ) is connected to the portion of the vacuum cleaner nozzle, relative to a coupling element of the tilting joint ( 7 ) is tiltably mounted, wherein in the work area, the mobility of the tilting joint ( 7 ) is reduced by a coupling element-side spring element is tensioned by a complementary to the spring element, arranged on the first part bearing element. Vacuum cleaner nozzle according to one of claims 4 to 6, characterized in that the parking resistor is formed at an approximately right angle to the bottom surface of the vacuum cleaner nozzle. Vacuum cleaner nozzle according to one of claims 4 to 7, characterized in that a greater force is required to overcome the park resistance than to overcome the overcome resistance. Vacuum cleaner nozzle according to one of the preceding claims, characterized in that the tilting joint ( 7 ) to create the surmountable resistor with a first overflowable projection ( 13 ) is trained. Vacuum cleaner nozzle according to one of claims 4 to 9, characterized in that the tilting joint ( 7 ) for creating the parking resistance with a second overflowable projection ( 12 ) is trained.

Images