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Hand-Held Power Tool and Protective Device for a Hand-Held Power Tool

a protective device and power tool technology, applied in the direction of way cleaning, suction cleaners, construction, etc., can solve the problems of weakened housing structure and damage to the housing, and achieve the effects of preventing overloading of the housing in individual areas, reducing weight, and absorbing impacts easily

Inactive Publication Date: 2008-08-14
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003]It is an object of the present invention to provide a hand-held power tool of the aforementioned kind that is well protected from mechanical loads. A further object of the invention resides in that a protective device for protecting the housing of the hand-held power tool from mechanical loads is to be provided.
[0004]In accordance with the present invention, this is achieved in that on the exterior wall of the housing a protective device is arranged that has a damping area wherein the damping area protects the housing in the area provided with openings from mechanical impact loads.

Problems solved by technology

In the area of the intake ports, the structure of the housing is weakened.
A point impact load on the housing in the area of the intake ports can cause damage to the housing.

Method used

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  • Hand-Held Power Tool and Protective Device for a Hand-Held Power Tool
  • Hand-Held Power Tool and Protective Device for a Hand-Held Power Tool
  • Hand-Held Power Tool and Protective Device for a Hand-Held Power Tool

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Embodiment Construction

[0023]The hand-held portable power tool illustrated in FIG. 1 is a blower 1. However, the invention can also be used for other hand-held power tools such as vacuum devices, combined vacuum / blower devices, motor chainsaws, trimmers or the like. The blower 1 has a housing 2 on which a blower tube 3 is secured. The blower 1 conveys working air through the blower tube 3. For conveying the working air, the drive motor 7, schematically illustrated in FIG. 1, is arranged in the housing 2. The drive motor is an internal combustion engine. The drive motor 7 is in particular a two-stroke engine, but the drive motor 7 can also be a four-stroke engine, in particular, a mixture-lubricated four-stroke engine.

[0024]On the housing 2 a top handle 4 for guiding the blower 1 is arranged. On the housing 2 there are two legs 6. The blower 1 can be put down to rest on the two legs 6. For starting the drive motor 7, the blower 1 has a starter device 8. The starter device 8 has a starter handle 9 to which ...

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Abstract

A hand-held power tool has a housing and a drive motor arranged in the housing. A blower wheel is provided, wherein the housing has at least one area provided with openings allowing passage of air conveyed by the blower wheel. A protective device is arranged on an exterior wall of the housing, wherein the protective device has a damping area and the damping area protects the housing in the area provided with the openings from mechanical impact loads.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a hand-held power tool comprising a drive motor that is arranged in a housing of the power tool and further comprising at least one blower wheel wherein the housing of the power tool has at least one area provided with openings allowing passage of air conveyed by the blower wheel. The invention furthermore relates to a protective device for a hand-held power tool.[0002]U.S. 2001 / 0005482 A1 discloses a hand-held power tool in the form of a blower whose housing has intake ports. In the area of the intake ports, the structure of the housing is weakened. When making such a housing from plastic material, reinforcements and the like must be provided in order to ensure a sufficient stability of the housing. A point impact load on the housing in the area of the intake ports can cause damage to the housing.SUMMARY OF THE INVENTION[0003]It is an object of the present invention to provide a hand-held power tool of the aforementioned kin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47L5/12
CPCE01H1/0809
Inventor SCHLIEMANN, HARALD
Owner ANDREAS STIHL AG & CO KG
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