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Vacuum Cleaning Tool, Especially Hand-Held Nozzle, for a Vacuum Cleaner

a vacuum cleaner and hand-held technology, applied in the field of vacuum cleaners, can solve the problems that the alignment error of the holder provided in the housing of the support shaft does not affect the support action of the turbine, and achieve the effect of minimal power loss and minimal fluctuation of the power of the turbin

Inactive Publication Date: 2006-08-17
DUPRO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a vacuum cleaning tool with a brush roller that has minimal power loss and fluctuation in power. This is achieved by using a support shaft and a bushing that have minimal tolerances, which ensures a uniform turbine power. The support shaft is fixedly attached to the housing, and the bushing is supported on the support shaft. The air turbine is supported on the bushing, and a belt drive is used to connect the air turbine to the brush roller. The invention also includes several vacuum air ports that provide a large mechanical action area for the brush roller without penetrating too deep into the working chamber. The vacuum air ports are positioned at identical, minimal spacing, and a high torque is obtained by combining the vacuum air flows. The invention also includes a discharge opening that is advantageously positioned to improve the cleaning action in corners and seams. The belt drive is arranged on the brush roller, and the housing web covering the vacuum air ports prevents parts from being open to the exterior."

Problems solved by technology

In particular, alignment errors of the holder provided in the housing for the support shaft have no effect on the support action of the turbine.

Method used

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  • Vacuum Cleaning Tool, Especially Hand-Held Nozzle, for a Vacuum Cleaner
  • Vacuum Cleaning Tool, Especially Hand-Held Nozzle, for a Vacuum Cleaner
  • Vacuum Cleaning Tool, Especially Hand-Held Nozzle, for a Vacuum Cleaner

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Embodiment Construction

[0031] The vacuum cleaning tool 1 according to the invention illustrated in the Figures is provided to be connected to a vacuum hose of a vacuum cleaning device, not illustrated, particularly a vacuum cleaner. For this purpose, the housing 2 assembled from a housing top part 2b and a housing bottom part 2a is provided at its rearward end 3 with a connecting socket 4 that is formed as a unitary or monolithic part of the housing 2. As can be seen in particular in the section illustrations of FIG. 6 and FIG. 7, a socket insert 5 is inserted into the connecting socket 4 (see section illustration of FIG. 6); the socket insert 5 has a stepped inner diameter S1, S2 in order to receive in a vacuum-tight way connecting tubes of different diameters. For this purpose, the first section 71 formed at the open end 104 is provided with an inner diameter S1 that is greater than the inner diameter S2 of the inwardly positioned second section 72 that neighbors the turbine chamber 11. Preferably, the ...

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PUM

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Abstract

A vacuum cleaning tool has a housing with a working chamber and a connecting socket for a vacuum hose. A brush roller is arranged in the working chamber. An air turbine is arranged in a turbine chamber between working chamber and connecting socket. The working chamber has a bottom with vacuum air ports through which a vacuum air flow enters the working chamber. The housing has an opening between working chamber and turbine chamber and a discharge opening between turbine chamber and connecting socket. The vacuum air flow passes from the working chamber into the turbine chamber and drives the air turbine and then passes through the discharge opening into the connecting socket. The brush roller acts through the vacuum air ports on a surface to be treated. A bushing on which the air turbine is fixedly mounted is rotatably supported on a support shaft mounted in the housing.

Description

BACKGROUND OF THE INVENTION [0001] The invention relates to a vacuum cleaning tool for a vacuum cleaning device, in particular, for a vacuum cleaner or the like, comprising a housing having at its front end a working chamber for a brush roller and at the opposed end a connecting socket for attaching a vacuum hose. Between the working chamber and the connecting socket a turbine chamber for an air turbine is arranged in the housing. The working chamber is essentially transversely arranged relative to the longitudinal axis of the vacuum cleaning tool. The bottom of the working chamber is provided with at least one vacuum air port through which a vacuum air flow enters the working chamber. A connecting opening between the working chamber and the turbine chamber is provided through which the vacuum air flow enters the turbine chamber and drives the air turbine. The vacuum air flow passes through the discharge opening into the connecting socket. The air turbine drives the brush roller in ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47L5/26A47L5/10
CPCA47L9/0416
Inventor WORWAG, PETER
Owner DUPRO AG
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