Device for fastening a tool member on a drive shaft of a motorically driven power tool

Patent metadata

Field	Value
Publication number	US-10470362-B2
Application number	US-201715665832-A
Country	US
Kind code	B2
Filing date	Aug 1, 2017
Priority date	Aug 4, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A device for fastening a tool member on an output shaft of a power tool has a support plate supporting the tool member and a clamping element embodied as a connecting hub. The connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft. A rider plate is secured on the connecting hub and rotatable relative to the connecting hub. Support plate, tool member, rider plate, and connecting hub are arranged such that the output shaft projects through support plate, tool member, rider plate, and connecting hub. A clamping device is carried on an end of the output shaft. The clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate. Connecting hub, rider plate, and pressure plate together form preferably a conjoint, connected component assembly.

First claim

What is claimed is:

1. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of the output shaft, wherein the clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate;
wherein the rider plate is arranged on a circumference of the connecting hub.

2. The device according to claim 1 , further comprising a pressure plate configured to contact the tool member, wherein the pressure plate is penetrated by the output shaft, and wherein the connecting hub acts on the pressure plate.

3. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of the output shaft, wherein the clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate;
a pressure plate configured to contact the tool member, wherein the pressure plate is penetrated by the output shaft, and wherein the connecting hub acts on the pressure plate;
wherein the pressure plate is arranged captively on the connecting hub.

4. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of the output shaft, wherein the clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate;
a pressure plate configured to contact the tool member, wherein the pressure plate is penetrated by the output shaft, and wherein the connecting hub acts on the pressure plate;
wherein the rider plate and the pressure plate are secured together on the connecting hub.

5. The device according to claim 2 , wherein the connecting hub, the rider plate, and the pressure plate form together a conjoint, connected component assembly.

6. The device according to claim 2 , wherein the connecting hub comprises a thick section and the thick section is a part of a captive securing device, wherein the thick section comprises a force transmitting surface acting on the pressure plate.

7. The device according to claim 2 , wherein the pressure plate and the connecting hub are arranged so as to be rotationally fixed relative to each other.

8. The device according to claim 2 , wherein the pressure plate and the connecting hub are formed together as one piece.

9. The device according to claim 2 , wherein the rider plate comprises a mounting opening with a fastening rim, wherein the fastening rim has an axial height, wherein the connecting hub comprises an axial section that projects through the mounting opening of the rider plate, wherein the axial section has a length that amounts to at least the axial height of the fastening rim and amounts maximally to the axial height of the fastening rim plus an axial height of the pressure plate.

10. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of the output shaft, wherein the clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate;
wherein the rider plate comprises a mounting opening with a fastening rim, wherein the connecting hub projects through the mounting opening of the rider plate.

11. The device according to claim 10 , wherein the rider plate is secured with axial clearance on the connecting hub.

12. The device according to claim 10 , wherein the fastening rim of the mounting opening of the rider plate is arranged axially between an end of the connecting hub and a pressure plate acting on the tool member.

13. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of the output shaft, wherein the clamping device acts on a support surface of the connecting hub and fixes through the connecting hub the tool member on the support plate;
a captive securing device arranged on the connecting hub and securing the rider plate captively on the connecting hub.

14. The device according to claim 1 , wherein the connecting hub comprises a thick section.

15. A device for fastening a tool member on an output shaft of a motorically driven power tool, the device comprising:
a support plate configured to support the tool member;
a clamping element embodied as a connecting hub, wherein the connecting hub is penetrated by the output shaft and is rotationally fixed on the output shaft;
a rider plate secured on the connecting hub and rotatable relative to the connecting hub, wherein the support plate, the tool member, the rider plate, and the connecting hub are arranged such that the output shaft projects through the support plate, the tool member, the rider plate, and the connecting hub;
a clamping device carried on an end of th

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Rethaber Achim

Classifications

• A01D34/733 Primary

  Cutting-blade mounting means · CPC title

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• A01D34/62

  Other details · CPC title

• A01D34/90

  for carrying by the operator · CPC title

• A01D34/47 Primary

  with motor driven cutters or wheels · CPC title