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Device and method for fixing an impeller to a shaft

A fan wheel and fixed component technology, applied to the components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve the time-consuming processing technology, laborious requirements, high costs, etc. of threaded connections problems, achieve fast and convenient assembly, and improve stability

Inactive Publication Date: 2009-08-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, screw connections are time-consuming and therefore very expensive in terms of production technology
In addition, this threaded connection requires a complex clamp construction

Method used

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  • Device and method for fixing an impeller to a shaft
  • Device and method for fixing an impeller to a shaft
  • Device and method for fixing an impeller to a shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 A possible embodiment of a clip 10 according to the invention for fastening a fan wheel on a shaft is shown. The preferably one-piece clamp 10 is extruded from steel sheet, but can also be made of other metallic or non-metallic materials, such as plastic. In this case the clip is advantageously produced by injection molding.

[0033] The clip 10 has an essentially cylindrical hub 12 in its center, which has a through-opening 14 for receiving a shaft. The clamp 10 is fixed on the shaft, such as the drive shaft of the motor, by means of the hub 12 , such as being compressed or shrink-fitted. In an alternative embodiment of the device according to the invention, instead of the through hole 14 , it is also possible, for example, for the clip to have a blind hole in the hub for receiving the shaft.

[0034] according to figure 1 embodiment of the clamp 10 in its figure 1 On the axial end corresponding to the lower end there is a plate-shaped widening 16 which i...

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PUM

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Abstract

The invention relates to a device and a method for fastening an impeller, in particular a fan wheel (30), on a shaft, in particular an electric motor drive shaft, having a clamp (10) mounted on the shaft in a rotationally fixed manner for The rotational movement of the shaft is transmitted to the impeller (30), wherein the clip (10) has a plurality of substantially axially formed fixing parts (18, 24) protruding from the clip (10), which are at least partially Pass through the hub portion (32) of the fan wheel (30). According to the invention it is proposed that the fastening part (18, 24) of the clip (10) snaps back against the hub part (32) by deformation.

Description

technical field [0001] The invention relates to a device for fastening a fan wheel on a shaft. The invention also relates to a method for fastening a fan wheel on a shaft. Background technique [0002] Numerous methods are known from the prior art by which a fan wheel can be fastened to a shaft, in particular to a motor shaft. For example, a bushing cast in the fan wheel is used for this, the bushing is pressed onto the shaft or a separate metal sleeve pressed onto the shaft is used for this, the fan wheel being fastened to this metal sleeve by means of springs or screws. [0003] In devices known from the prior art, the fan wheel, which is mostly made of plastic, is mounted on the drive shaft, for example the motor shaft, by means of a clamp via a form-fit connection. A corresponding contour corresponding to the clip is located on the fan wheel to be driven, whereby a synchronous action is achieved in the direction of rotation of the drive shaft. The axial fixation of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/26F04D29/32
CPCF04D29/263F04D29/329
Inventor F·科普夫
Owner ROBERT BOSCH GMBH
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