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A technology for working tools and tools, applied in the field of manually operated working tools, can solve the problem of high cost

Active Publication Date: 2009-04-29
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the channel runs between the grid and an air-guiding wall, complex and costly gates that are molded by injection molding are required to produce the fan wheel housing

Method used

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Examples

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Embodiment Construction

[0022] figure 1 The disc cutter 1 shown in has a housing 2 in which a drive motor (not shown in the figure) is accommodated for rotationally driving a cutting disc 3 . The cutting disk 3 is partially surrounded by a protective cover 20 . The cutting disc 3 is arranged adjacent to the front side 5 of the housing 2 . as well figure 2 As shown, the disc cutter 1 has a holding tube 7 which straddles the housing 2 at the point of the front side 5 . Arranged on the rear side 6 of the housing 2 facing away from the front side 5 is a rear handle 4 to which is fastened a throttle lever 11 for actuating the drive motor. The disc cutter 1 has a fan wheel 8 which is driven by the drive motor. The fan wheel 8 is fastened, in particular, to the crankshaft of the drive motor.

[0023] The fan wheel 8 is arranged behind a fan wheel guard 9 which separates the fan wheel 8 from the outer side of the housing. In the area of ​​the fan wheel 8 , the fan wheel housing 9 has a suction opening...

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PUM

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Abstract

A manually operated power tool, in particular a disc cutter or the like, is equipped with a housing in which a drive motor is accommodated. The drive motor drives a tool. The power tool is equipped with a fan wheel, which is covered with a fan wheel cover (9) towards the outside of the housing. The fan wheel cover (9) has a suction opening (10) at the location of the fan wheel. A rib (12) straddling the suction hole (10) and forming a channel (22) outside the suction hole (10) is arranged on the outer surface (32) of the fan wheel cover (9). In order to ensure sufficient cooling air supply even when partly blocking the outer side (32) of the fan wheel cover (9), the upper side (41) of the rib (12) turns to the outer side (32) of the fan wheel cover (9) to form a A suction surface (42) transverse to the surface (43) of the fan wheel housing (9) in a second region (29).

Description

technical field [0001] The invention relates to a manually operated work implement, in particular a disc cutter or the like. Background technique [0002] DE 41 20 369 A1 discloses a motor saw with a fan wheel guard, in which air is sucked in through a grid. In order to ensure the necessary air intake when the grille is blocked, a channel designed under the grille and extending all the way to the rear wall of the fan wheel cover is configured. Since the channel runs between the grating and an air-guiding wall, complex and expensive locks formed by injection molding are required for the production of the fan wheel shroud. Contents of the invention [0003] The object of the present invention is to provide a manually operated power tool whose fan wheel cover is simple to manufacture and which ensures a sufficient supply of cooling air. [0004] The above object is achieved by a power tool having the features of claim 1 . [0005] Since the fan wheel cover is only provided...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/02F02B63/02B23D47/00B24B27/08B24B55/05F01P1/02F01P5/02F02B77/04
CPCB24B27/08B23D47/00B24B55/052F01P5/02B24B23/02F01P5/06F02B63/02
Inventor J·里曼
Owner ANDREAS STIHL AG & CO KG