Hand-guided work apparatus and assembly including said hand-guided work apparatus and a support

Patent metadata

Field	Value
Publication number	US-2016208449-A1
Application number	US-201615003636-A
Country	US
Kind code	A1
Filing date	Jan 21, 2016
Priority date	Jan 21, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

An assembly includes a handheld work apparatus and a support. The support has a holder worn by an operator and a connector arrangement which is held at a first attachment on the holder and on a second attachment on the work apparatus. The connector arrangement is mounted on the second attachment so as to be pivotable about a pivot axis and supports the work apparatus in a rearward direction in relation to the operator and prevents a rearward movement of the work apparatus. The center of gravity of the work apparatus and the first attachment have a spacing (a) to one another measured in a horizontal and lateral direction in relation to the operator. The holder has, at the first attachment, a bracing device for supporting the tilting moment acting on the first attachment by the weight force (F) of the work apparatus because of the lateral spacing (a).

First claim

What is claimed is:

1 . An assembly comprising:
a hand-guided work apparatus having a work position; and, a support for supporting said work apparatus during operation thereof; said work apparatus having a housing and drive unit mounted in said housing; said work apparatus defining a center of gravity whereat a weight force (F) of said work apparatus acts; said work apparatus further including at least one handle on said housing for guiding said work apparatus during said operation thereof; said support including a holder to be worn by an operator and a connector arrangement for connecting said work apparatus to said holder; said connector arrangement having a first attachment whereat said connector arrangement is held on said holder and a second attachment whereat said connector arrangement is held on said work apparatus; said second attachment being configured to pivotally journal said connector arrangement so as to permit said connector arrangement to pivot about at least one pivot axis; said connector arrangement being further configured to rearwardly brace said work apparatus referred to the operator so as to prevent a backward movement of said work apparatus; said center of gravity of said work apparatus and said first attachment conjointly defining a lateral distance (a, c) therebetween measured in a horizontal and lateral direction referred to the operator when said work apparatus is in said work position; and, said holder including, at said first attachment, a bracing device for at least partially supporting a tilting moment acting on said first attachment and caused by said weight force (F) applied at said lateral distance (a, c) from said first attachment.

2 . The assembly of claim 1 , wherein said distance (a, c) lies in a range of 5 cm to 15 cm.

3 . The assembly of claim 1 , wherein said second attachment and said center of gravity lie in a common vertical plane.

4 . The assembly of claim 3 , wherein said center of gravity lies approximately perpendicularly under said second attachment.

5 . The assembly of claim 3 , wherein said work apparatus is a blower having a blower tube through which a blower air flow is moved during said operation; and, said connector arrangement is further configured to take up the recoil force (R) occurring during said operation generated by the blower air flow exiting from said blower tube.

6 . The assembly of claim 5 , wherein said blower tube defines a longitudinal axis and said second attachment and said longitudinal axis both lie in said common vertical plane.

7 . The assembly of claim 1 , wherein said work apparatus, in said work position, is at a distance (b) to said holder measured in a lateral direction referred to said operator.

8 . The assembly of claim 1 , wherein said connector arrangement is pivotally journalled at said second attachment so as to be pivotable about a vertical pivot axis.

9 . The assembly of claim 1 , wherein said connector arrangement is pivotally journalled at said second attachment so as to be pivotable about a horizontal pivot axis.

10 . The assembly of claim 1 , wherein said second attachment is configured to define a ball joint.

11 . The assembly of claim 1 , wherein said connector arrangement includes a connecting pin.

12 . The assembly of claim 11 , wherein said connecting pin, in said work position of said work apparatus, projects outwardly from said holder approximately in a horizontal and lateral direction referred to the operator.

13 . The assembly of claim 11 , wherein said housing has a housing receptacle formed therein and said connecting pin is movably mounted in said housing receptacle.

14 . The assembly of claim 13 , wherein said connector arrangement includes means for centering said connecting pin in said housing receptacle.

15 . The assembly of claim 11 , wherein said connecting pin can project out of said housing at mutually opposite sides of said housing.

16 . The assembly of claim 1 , wherein the connection between said work apparatus and said holder is releasable.

17 . The assembly of claim 1 , wherein said holder has a receptacle for said connector arrangement and said receptacle has at least one rail; and, said connector arrangement includes a plate mounted on said first attachment and said plate is configured to engage behind said at least one rail.

18 . The assembly of claim 1 , further comprising a back carrier and an energy-storage unit mounted thereon and said holder being configured on said back carrier; and, an energy line connecting said energy-storage unit to said work apparatus.

19 . A hand-guided work apparatus having a work position and defining a center of gravity, said work apparatus comprising:
a housing and a drive unit mounted in said housing; at least one handle on said housing for guiding said work apparatus during operation thereof; a connector arrangement projecting out from said housing; an attachment location; said connector arrangement being pivotally journalled at said attachment location so as to be pivotable about at least one pivot axis; said attachment location and said center of gravity in said work position both lying in a common vertical plane; said work apparatus defining a longitudinal direction and said common vertical plane being aligned in said longitudinal direction; and, a connecting pin projecting outwardly from said housing approximately in a horizontal and lateral direction referred to an operator.

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Barth Christian
• Hittmann Markus
• Maier Thomas
• Winterholler Johann
• Schwalk Matti
• Oberhofer Felix

Classifications

• 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

• F04D29/002

  especially adapted for elastic fluid pumps · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• E01H1/0809 Primary

  Loosening or dislodging by blowing (combined with suction E01H1/0863; with steam E01H1/10; removing snow by blowing E01H5/106; cleaning rails by blowing E01H8/105, E01H8/125; removing fog by blowing E01H13/00; cleaning joints in road construction by blowing E01C23/0906); Drying by means of gas streams (combined with snow or ice melting E01H5/10) · CPC title

• F04D25/08

  the working fluid being air, e.g. for ventilation · CPC title