EP3372135A1 - Suction nozzle for a handheld vacuum cleaner and handheld vacuum cleaner - Google Patents

Abstract

The invention relates to a removal and suction nozzle for a hand suction device (7) having a nozzle body (1) on a working side of the nozzle body (1) a Abziehlippe (2) for abutment against a surface to be sucked (3) and for drawing off liquid in a drawing-off direction (A) from the sucked-off surface (3), a suction gap (4) disposed on a liquid collecting side of the drawing-off lip (2), and a suction passage port (5) in fluid communication with the suction gap (4) for connection to the suction passage (6) of the hand suction device (7). Furthermore, the invention relates to a hand suction device (7) with such a pull-off and suction nozzle.

The known suction and extraction nozzles and vacuum devices (7) have the disadvantage that sucking corners and edges is quite difficult. This improves the invention in that the nozzle body (1) of the suction and discharge nozzle on the Abziehlippe (2) side facing away from the Ansaugspaltes (4) has a support surface (8) for abutment with the surface to be sucked (3) and on the Abziehlippe (2) opposite side of the support surface (8) has a guide surface (9) which is shaped so that it with increasing distance from the support surface (8) from the plane of the support surface (8).

Description

The invention relates to a puller and suction nozzle for a hand-held suction device according to the preamble of claim 1. Furthermore, the invention relates to a hand suction device with such a pull-off and suction nozzle.

Generic pull-off and suction nozzles are from the DE 10 2012 104 102 A1 known. They are intended for attachment to a portable, to be held under normal use in the hands of a user Handauggerät for absorbing liquids or liquid / air mixtures of flat surfaces, especially windows, tables or similar, vertical, oblique or horizontal surfaces.

The extraction and suction nozzles have a suction port and a nozzle body having at least one Abziehlippe which is movable along the surface for withdrawing liquid in a Abziehhrichtung, and at least one, arranged in the region of a liquid collection side of the Abziehlippe suction for sucking the before the Abziehlippe accumulated liquid has in a standing with the suction port connection fluidly connected suction chamber. The nozzle body is formed in two parts with a suction channel connection having the device-side support body and a Abziehlippe and the suction gap having absorbent body. The support body is arranged at a distance from the Abziehlippe and in withdrawal direction before the Abziehlippe and forms with a support surface a support for supporting on the surface. The absorbent body is pivotally connected to the connecting body and rotatable via a hinge about an axis of rotation which is parallel to the abutting edge of the Abziehlippe on the surface to be sucked, against the force of a spring means, which adjusts the Abziehlippe to the surface when the support abuts on the surface to be sucked ,

A puller and suction nozzle for a hand suction device and a Handsauggerät are also from the US 2011 138 554 A1 known. This known pull-off and suction nozzle is part of a mobile suction device, which is designed as a suction device for absorbing liquids. A preferred application of such suction devices is the removal of window surfaces after moistening with simultaneous suction of the withdrawn liquid. This from the US 2011 138 554 A1 known Handauggerät has a pivotable mounting of the suction and discharge nozzle to a central position, wherein a return spring, which is first stretched due to the contact pressure of the Abziehlippe against the surface to be sucked and the Abzieh- and suction nozzle after elimination of this pressure back to the starting position, is provided.

In principle, however, the invention is not limited to liquid aspirators or window pullers, it can be used in conjunction with all forms of hand suction devices, the preferred use being understood by the vacuum hand held device to be battery operated and small enough to be gripped with one hand and can be guided along the surface.

From the WO 2016 029 968 A1 is another extractor and suction nozzle known. Again, the puller and suction nozzle is pivoted against a spring force, wherein the joint can be arranged either within the puller and suction nozzle or within the Handsauggerätes. A similar solution shows the DE 10 2014 001 250 B3 ,

Although the abovementioned suction and extraction nozzles and the associated vacuum devices are well suited to collect and absorb liquids, but have the disadvantage that depending on the orientation of the vacuum device, the Abziehlippe is employed with a different pressure and angle to the surface, resulting in different Abziehergebnissen, in particular streaking or streaking or similar problems. Furthermore, although a defined contact pressure can be applied via the pivotable removal and suction nozzle, the suction is not always optimal, since the user must set the optimum angle for adjusting the Abziehlippe by attaching the device by appropriate orientation of the Handsauggerätes itself. This is particularly disadvantageous when corners or edges of the surface to be deducted are achieved or when the device is used with an extension rod, which makes the handling of the device more complex and difficult.

From the DE 2 143 105 A1 Again, a mechanical puller is known in which liquid can be withdrawn from a surface without suction. This puller has a spring-loaded Anolleolle on which it is able to support in addition to the Abziehlippe on the surface to be sucked. This locating roller facilitates the guidance of the puller, but has the disadvantage that the surface which lies between the locating roller and the Abziehlippe, then, when the Anrollolle at the bottom of a window abuts against the frame, can be removed only with difficulty.

The object of the invention is therefore to provide a suction and extraction nozzle for a hands-suction device, in which an optimal cleaning effect by facilitating the employment of the device is made possible on the surface to be sucked. Another object is to provide a and a hand suction device, which is usable with such a pull-off and suction nozzle.

This object is achieved according to the invention with respect to the stripping and suction nozzle by a pull-off and suction nozzle according to claim 1. With regard to the hand suction device, this object is achieved by a hand suction device according to claim 11.

According to the invention, the removal and suction nozzle is divided into two parts: a support body, which can be connected firmly to the intake manifold and thus to the hand-held vacuum cleaner, and to a suction body which is articulatedly connected thereto. At the latter, the Abziehlippe and the suction are provided for sucking the suction material in the form of liquids or a mixture of liquids with dirt and / or air fractions. The support is fixedly positioned relative to the Saugkanalanschluss, so that an over the generally cylindrical suction channel applied pressure force of the user when pressing the Abzieh- and suction nozzle to the surface to be deducted is always directed towards the support surface, so this can absorb the force. As a result, the body is relieved of this compressive force, wherein the rotatably mounted on the supporting body suction body is employed by the spring force in the direction of the surface to be deducted, so that the Abziehlippe with constant pressure - regardless of the pressing force of the user or the orientation of the device relative to the surface , to the surface creates.

The new suction and suction nozzle for the hand vacuum device and the new hand vacuum can now easily find the optimum angle for adjusting the Abziehlippe to be sucked surface, as results in a defined position through the support surface. This support surface ensures that, together with the Abziehlippe a double line pressure or a combination of line pressure in the region of the Abziehlippe with one or more points on which the support surface is supported on the surface, is present. As a result, the angle of the Abziehlippe is set relative to the surface to be sucked and the user can easily move the device parallel to the surface to be sucked.

The fact that now the pressure force of the user on the hand suction device through the support surface and preferably also through the axis of rotation and at the same time the Abzieh- and suction nozzle is rotatably mounted about this axis of rotation against the spring force, the Abziehlippe can with the pressure of the spring force to be deducted Create surface. This means that regardless of the pressure force of the user, which is substantially absorbed by the support surface, the Abziehlippe is always pressed with the same force against the surface to be deducted. This achieves a reproducible work result and avoids excessive contact pressure.

Often, the user has the problem that he can not continuously peel in the corners or edges, as edges of the window frame or the floor hinder the movement of the hand-held suction device. The result is that an area between the support surface and the Abziehlippe can not be optimally removed or sucked. To alleviate this problem, the user would have to raise the device when reaching the window frame to reach the edge or corner area. This is now simplified in a preferred embodiment of the invention in that a special guide surface is provided which automatically raises the device, so that the support surface lifts from the surface to be sucked and is guided over the edge or the corner. The user can thus continue to support the device on the guide surface and does not have to find the optimal angle on its own to be able to get into the corners. This is particularly interesting for overhead work or devices that are operated at the end of a telescopic or extension rod.

In order to realize the above-mentioned function, the guide surface is disposed on the side of the support surface opposite to the Abziehlippe. It moves away with increasing distance from the support surface ever further from the plane of the surface to be sucked, so that an inclined plane or a rounded surface is created, which ensures that the device with this surface initially seated on the edge or corner and then is lifted by the sliding of the guide surface on the edge. The user thus does not hit the device against an edge and then has to re-start its suction movement, but is continuously continued, so that the suction of the corner regions or edge regions is facilitated.

The support surface is preferably formed by a rotatable component, which allows a rolling of the support surface on the surface to be sucked. This can be a ball, a roller or even several wheels. It is only important that the support surface or the support surfaces are provided at a distance from the Abziehlippe to allow alignment of the Handsauggerätes. Also, the guide surface can be designed largely arbitrary, it may be formed by the housing of the peel and suction nozzle itself or be formed by cams that project, for example, from the bottom of the housing down. Preferably, the guide surface is rounded, so that there is a continuous, shock-free lift-off movement as a result of the guide.

Hereinafter, particularly preferred embodiments of the peel and suction nozzle and the Handsauggerätes are described, which also independently of the provision of the support surface and the guide surface advantageously further develop the device and can represent an independent invention.

Preferably, as in the prior art, the pull-off and suction nozzle is movably mounted against a spring means. This has the advantage that the storage ensures a defined contact pressure even with smaller pitching movements of the user. This movement of the pull-off and suction nozzles can be used to operate the device. While on the one hand, the contact pressure can be determined via a pressure sensor, so that as a result of this pressure increase the motor is increased in power or even turned on, the angle of the suction and extraction nozzle relative to the Handsauggerät can be detected and be used as a circuit signal for the control of the motor of the manual suction device.

The absorbent body of the removal and suction nozzle is connected via a joint pivotally or rotatably connected to the support body, which in turn is attached to the suction duct connection, which usually has the shape of a nozzle, or is inserted into this. The suction channel extends from the hand suction device through this suction channel connection into a suction chamber in the housing of the absorbent body through the support body and preferably also through the joint, the suction chamber in the suction body in turn fluidly connected to the suction, which is adjacent to the suction provided.

The joint may be a ball joint, which is penetrated by the flow channel. Alternatively, the flow channel may also be elastic and, for example, have the form of a hose or elastic tube, while the removal and suction nozzle may be mounted on the suction channel connection via a separate joint. It is also possible to mount the complete extraction and suction nozzle on the vacuum device via a joint. The joint in turn may be a rocker arm or a bearing block, for example, supports a hollow cylindrical part of the suction chamber on both sides.

The rotational movement or pivoting movement of the extraction and suction nozzle relative to the stationary part of the hand-held suction device is preferably limited by stops. Further, a damper element may be provided that attenuates either via a friction damping of the joint or a shock absorber-like separate embodiment, the pivotal movement of the puller and suction nozzle. The spring in turn, which returns the withdrawal and suction nozzle to the starting position, may be a spring provided in the joint or may also be formed by a separate spring. Furthermore, the spring action can also be realized via the elastic material properties of the Saugkanalwandung or other areas of the peel and suction nozzle.

Finally, it is possible to indicate to the user via a visual check whether the support surface and the Abziehlippe bear against the surface to be sucked. For this purpose, corresponding sensors are provided which, for example, a signal lamp Taxes. It is also possible to emit an acoustic signal that sounds when the engine is running, for example, without contacting the support surface and the Abbehlippe to a surface. Finally, any indicator means can be used that can signal to the user the contact of the two surfaces to the surface to be suctioned or the absence of this contact.

A controller that shuts down or shuts off the vacuum unit when pressure sensors on the support surface detect that it is not in contact with the surface to be rejected, can extend the standby time of the device and save energy. Of course, any other sensor, including a load sensor for the engine of the suction unit can be used instead of the pressure sensors, which can directly or indirectly detect a flow resistance in the intake duct or in the region of the suction unit.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Fig. 1

ein Ausführungsbeispiel einer erfindungsgemäßen Abzieh- und Saugdüse in einer Seitenansicht,

Fig. 2

ein Handsauggerät nach der Erfindung ohne Abzieh- und Saugdüse in einer ersten Ansicht,

Fig. 3

das in Figur 2 dargestellte Handsauggerät aus einer anderen Perspektive,

Fig. 4

das in den Figuren 2 und 3 dargestellte Handsauggerät mit montierter Abzieh- und Saugdüse,

Fig. 5

das Sauggerät aus Figur 4 aus einer anderen Perspektive,

Fig. 6

eine schematische Ansicht der Funktionsweise der Abzieh- und Saugdüse nach der Erfindung in einer Schnittansicht und

Fig. 7

die Abzieh- und Saugdüse aus Figur 6 eine schematische Ansicht bei Erreichen des Fensterrahmens.

In the drawings show:

Fig. 1

An embodiment of a pull-off and suction nozzle according to the invention in a side view,

Fig. 2

a hand suction device according to the invention without a pull-off and suction nozzle in a first view,

Fig. 3

this in FIG. 2 Handheld device shown from a different perspective,

Fig. 4

that in the FIGS. 2 and 3 illustrated hand suction device with mounted extractor and suction nozzle,

Fig. 5

the suction device off FIG. 4 from a different perspective,

Fig. 6

a schematic view of the operation of the peel and suction nozzle according to the invention in a sectional view and

Fig. 7

the puller and suction nozzle off FIG. 6 a schematic view when reaching the window frame.

In FIG. 1 a pull-off and suction nozzle according to the invention is shown, which has a nozzle body 1 with a Abziehlippe 2 and a right next to it arranged rubber strip, which together with the Abziehlippe 2 the suction 4 limited. The nozzle body 1 is composed of a support body, which is fixed relative to the vacuum cleaner with mounted puller and suction nozzle, and a pivotable about pivotable about a 10 pivoting suction body with the Abziehlippe 2 together. Via the suction gap 4 in the suction body, liquid which collects on the right in front of the pull-off lip 2 when the pull-off and suction nozzle moves, can be sucked into the suction channel 6. The nozzle body 1 in turn can be connected via a suction channel connection 5 to a hand suction device 7, not shown here. In this embodiment, the housing of the nozzle body 1 on an inner suction chamber 12, in which the negative pressure of the suction unit of the Handsauggerätes 7, which is preferably operated by an electric motor, is provided.

In the FIGS. 2 and 3 a hand suction device 7 is shown that, in conjunction with the in FIG. 1 shown puller and suction nozzle can be used. Evident is the device-side part of the joint 10, through which the hand-suction device 7 can be hinged to the pull-off and suction nozzle. The suction and suction nozzle mounted on the vacuum cleaner 7 is in FIG. 4 and in FIG. 5 shown. It extends with the intake passage 6 of the suction port 5 into the hand suction device 7, so that the suction gap 4 is in flow communication with the suction unit of the hands suction device 7.

The pull-off and suction nozzle 2 is pivotally mounted against the force of a return spring, wherein not visible stops limit the pivoting movement. The battery that supplies the motor used as the suction unit of the hand suction device 7 is preferably arranged in the handle of the hand suction device 7, since this results in a favorable weight distribution. The lower portion of the handle 7 may be formed as a plug-in sleeve for insertion of an extension or telescopic rod.

The function of the peeling and suction nozzle according to the invention is clear from FIGS. 6 and 7. The removal and suction nozzle has a support surface 8, which is formed here in the form of rollers. The running surface of the roller thus forms in each case the support surface 8 which, together with the contact surface of the draw-off lip 2, determines the orientation of the removal and suction nozzle relative to the surface 3 to be sucked off. Since the extraction and suction nozzle against the spring force of the spring means 11th is pivotable, regardless of the orientation in which the user presses the device against the surface to be sucked 3, the removal and suction nozzle can take the optimum position.

As a result, the suction gap 4 is closed by the Abziehlippe 2 and a rubber strip arranged thereunder, so that there is an optimal suction into the suction chamber 12 of the peel and suction nozzle. The suction chamber 12, in turn, is connected via the suction channel connection 5 to an internal suction device, not shown here in detail, which interacts with the suction unit of the hand suction device 7.

If, for example, the pull-off and suction nozzle reaches the edge of a window frame when driving along a window, as it does in FIG FIG. 7 is represented, the support surface 8 or the roller carrying this surface would abut against the window frame and prevent further driving into the corner by the Abziehlippe 2. This means that the user has to manually pivot the device, which on the one hand can cause it overstretches the Abziehlipp 2 or that the rear boundary of the suction gap 4 lifts from the window surface and on the other hand by the inhomogeneous movement, the suction effect can be affected.

So that this corner area can now be easily and simply sucked out in the corner area by a homogeneous continuation of the movement of the hand suction device 7, the guide surface 9 is provided. This is here in the form of a down, bell-shaped edge of the housing of the nozzle body 1 is formed. As shown, this cam-like portion causes the pull-off and suction nozzle to slightly twist so that the support surface 8 lifts off the surface 3 to be suctioned and is guided over the edge of the window frame.

This causes an effective suction in the corner area, so that the user with a harmonious movement of the suction device can lead to the edge of the window or any other area.

LIST OF REFERENCE NUMBERS

1

nozzle body

2

squeegee

3

Area to be sucked off

4

suction gap

5

Saugkanalanschluss

6

intake port

7

Handsauggerät

8th

support surface

9

guide surface

10

joint

11

spring means

12

suction

A

stripping

D

axis of rotation

Claims (13)

Deduction and suction nozzle for attachment to a portable, when used properly in the hand of a user to be held hand vacuum device (7) for absorbing liquids or liquid / air mixtures of flat surfaces (3), with a Saugkanalanschluss (5) and a nozzle body (1) having at least one suction lip (2) movable along the surface (3) for drawing liquid in a peeling direction (A), and at least one suction gap (4) disposed in the region of a liquid collecting side of the peeling lip (2) for sucking the liquid accumulated in front of the Abziehlippe (2) in a with the Saugkanalanschluss (5) fluidly related suction chamber (12), wherein the nozzle body (1) in two parts with a, the Saugkanalanschluss (5) having device-side support body and a, the Abziehlippe (2) and the suction gap (4) having absorbent body is formed and the support body at a distance to the Abziehlip Pe (2) and in Abziehrichtung (A) seen before the Abziehlippe (2) arranged support for supporting on the surface (8) and the absorbent body via a hinge (10) to a contact edge of the Abziehlippe (2) on the surface ( 8) parallel to the axis of rotation (D) against the force of a, in the presence of the support on the surface (3) the Abziehlippe (2) to the surface (8) hiring spring means (11) is rotatably connected to the connector body,
characterized in that
the support relative to the suction port (5) is designed such that it is supported on pressing the Abzieh- and suction nozzle to the surface (3) with a flat or linen-like support surface (8) in the contact area on the surface (3), wherein the line of action a pressing force acting on the suction channel connection (5) runs through the contact region of the support with the surface (3) that is not changeable in the position relative to the suction channel connection (5). Deduction and suction nozzle for a hand suction device (7) according to claim 1, characterized in that the axis of rotation (D) is arranged such that the line of action extends through the axis of rotation (D). Vacuum and suction nozzle for a hand suction device (7) according to claim 1 or 2,
characterized in that the support surface (8) of the running surface of at least one, rotatably mounted on the absorbent body (1), formed as a roller or roller support roller is formed. Deduction and suction nozzle for a hand suction device (7) according to claim 1, 2 or 3, characterized in that the absorbent body on the, the Abziehlippe (2) facing away from the support surface (8) formed in particular by a bent guide member guide surface (9) wherein the guide surface (9) is a curved in the direction of the suction channel connection (5) surface, which with increasing distance from the support surface (8) from the surface to be sucked (3). Pull-off and suction nozzle for a hand suction device (7) according to the preceding claim, characterized in that the guide surface (9) is formed by a region of the housing of the nozzle body (1) facing away from the suction gap (4). Deduction and suction nozzle for a hand suction device (7) according to one of the two preceding claims, characterized in that the nozzle body (1) at least one, preferably two, spaced apart guide pins which, to form the guide surface (9) from the housing of the Spray nozzle body (1) in removal direction (A). Deduction and suction nozzle for a hand suction device (7) according to any one of the preceding claims, characterized in that the suction channel connection (5) of one, with the Handsauggerät (7) connectable to the support body fixedly arranged nozzle is formed, wherein the support body via the joint (10) is connected to the absorbent body of the nozzle body (1) and extends a flow channel from the suction gap (4) through the joint (10) and the nozzle. Deduction and suction nozzle for a hand suction device (7) according to any one of the preceding claims, characterized in that the Abziehlippe (2) around a perpendicular to the surface to be sucked (3) axis indirectly or directly relative to the suction port (5) is rotatably mounted. Deduction and suction nozzle for a hand suction device (7) according to any one of the preceding claims, characterized in that the joint (10) is formed as a ball joint or is formed by an elastic housing portion of the peel and suction nozzle. Deduction and suction nozzle for a hand suction device (7) according to one of claims 1 to 8, characterized in that the joint (10) is formed as a rocker arm or is formed by a bearing block, at the two ends of a hollow cylindrical portion formed in a housing suction chamber (12) are rotatably mounted. Handsauggerät (7) with a suction unit, a suction material container, a suction channel (6) and a suction and suction nozzle for sucking suction material in the form of liquids or liquid / air mixtures in the suction container,
characterized in that
the withdrawal and suction nozzle is a pull-off and suction nozzle according to one of claims 1 to 10. Handsauggerät (7) according to the preceding claim, characterized in that the extraction and suction nozzle (1) has at least one power switch, wherein the Handsauggerät (7) has a controller which cooperates with the power switch, so that via the circuit breaker, the control such can be switched, that over the circuit breaker, the suction unit can be moved down in its performance or can be switched on or off, via one or more pressure sensors, the system of the support surface (8) and / or the Abziehlippe (2) the surface to be sucked (3) can be detected and the control is automatically shut down or switched off in the absence of pressure on the pressure sensors, the suction unit. Handsauggerät (7) according to the preceding claim, characterized in that the Handsauggerät (7) optical and / or acoustic indicator means, via which a lifting of the support surface (8) and / or the Abziehlippe (2) of the surface to be sucked (3) the user can be displayed, wherein the controller is able to independently activate the indicator means with a corresponding signal of the pressure sensors.

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