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Hand-propelled appliance, in particular vacuum cleaner

A kind of working equipment and hand-operated technology, which is applied in the direction of manufacturing tools, vacuum cleaners, household appliances, etc., can solve the problems of using radius limited cable length, inability to work, etc.

Inactive Publication Date: 2013-01-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This appliance has the disadvantage that the radius of use is limited by the length of the cable
It is not possible to work off-grid with this appliance

Method used

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  • Hand-propelled appliance, in particular vacuum cleaner

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] The hand-held power tool is embodied as a vacuum cleaner 1 with a suction hose 3 on a housing 2 in which a fan wheel 4 for generating an air flow, a motor 5 for driving the fan wheel 4 , a filter 6 and the power supply generally marked 7. This power supply device 7 includes wires 8 and 9 that constitute an internal circuit for powering the motor 5 . The electric machine 5 is advantageously designed as a DC motor that can be driven at low voltage.

[0014] The electrical lines 18, 19 are connected to a mains cable 10 with a mains plug 11, which is provided for connection to an external power source, in particular to an electrical network. Between the power cable 10 or the power plug 11 and the motor 5, there is a transformer 13 between the wires 8, 9 and 18, 19 for converting the high voltage obtained from the external network into a required low voltage. Furthermore, the current drawn from the grid is filtered and the AC voltage is converted into a DC voltage in the r...

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PUM

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Abstract

A hand-propelled appliance (1) is provided with an electric drive motor (5) and a power-supply means (7) which comprises a mains plug (11), for connection to an external power source, and a battery pack (14), power being supplied to the drive motor alternatively either via the battery pack or via the mains plug and the external power source.

Description

technical field [0001] The invention relates to a hand-operated working tool, especially a vacuum cleaner, which has an electric drive motor and a power supply. Background technique [0002] DE 10 2004 053 765 A1 discloses a power supply device for an electrical consumer, which is a vacuum cleaner, wherein the power supply device is designed as an external structural unit, which is formed independently of the electrical consumer. The power supply unit includes a housing in which a battery pack is exchangeably accommodated. The housing of the power supply device contains a socket via which electrical consumers can be connected. The consumer is supplied with electrical energy supplied by the battery pack, wherein an electronic regulating device is provided to adapt the different voltage values ​​required by the consumer. [0003] The advantage of such a power supply is that the consumer is operated independently of the grid. [0004] Furthermore, commercially available hous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/00A47L9/28
CPCA47L9/2878
Inventor H·勒姆
Owner ROBERT BOSCH GMBH