Attaching arrangement for hand-held motor-driven tools

Abstract

The invention relates to an arrangement for attaching a bar of a hand-held motor driven tool to a body of the tool, the arrangement including: at least one bolt, having a first part, securely arranged to the body, and a second part extending from the body, the second part having an engagement portion for engaging a nut; a cover portion adapted to bear against a bar such that the bar is arranged between the cover portion and the body; and at least one nut, captively attached to the cover portion. The nut is adapted to engage the engagement portion of the bolt for securing a bar between the cover portion and the body, the nut having a rotation axis. Thereby, an attachment arrangement is achieved that facilitates changing of bars when the nut used in the attachment arrangement is captively arranged to the cover portion.

1 - 19 . (canceled) 
     
     
         20 . An arrangement for attaching a cover to a bar of a saw, the arrangement comprising:
 at least one first engagement device, having a first part and a second part, the second part having an engagement portion for engaging at least one second engagement device;   a cover portion adapted to bear against a bar;   the at least one second engagement device, captively attached to the cover portion, wherein the second engagement device is adapted to engage the engagement portion of the first engagement device for securing the cover portion to the bar, the second engagement device having a rotation axis;   wherein the second engagement device is arranged to move a first distance along the engagement portion of the first engagement device, in a direction of the rotation axis of the second engagement device;   when the first and second engagement device are not engaged, the second engagement device is captively attached to the cover portion in such a way that it is movable a second distance relative the cover portion in a direction of the rotation axis of the second engagement device, wherein the second distance is larger than the first distance,   wherein the cover portion has an inner surface that, when the cover portion is arranged to the bar, is directed towards the bar, and an outer surface that, when the cover portion is arranged to the bar, is directed away from the bar, the cover portion further having a through aperture extending between the inner and outer surfaces for receiving the second part of the first engagement device, the cover portion further comprising at least one receiving portion in which an attaching portion of the second engagement device is arranged for captively attaching the second engagement device to the cover portion and the at least one portion is arranged separately from the through aperture.   
     
     
         21 . The arrangement as recited in  claim 20 , wherein the first part of the at least one first engagement device is securely arranged to a body. 
     
     
         22 . The arrangement as recited in  claim 21 , wherein the second part of the at least one first engagement device extends from the body. 
     
     
         23 . The arrangement as recited in  claim 22 , such that the bar is arranged between the cover portion and the body. 
     
     
         24 . The arrangement as recited in  claim 21 , wherein the second engagement device is adapted to engage the engagement portion of the first engagement device for securing a bar between the cover portion and the body. 
     
     
         25 . The arrangement according to  claim 20 , wherein the cover portion has guiding device for guiding the first engagement device towards the second engagement device. 
     
     
         26 . The arrangement according to  claim 20 , wherein at least a part of the through aperture has substantially the same cross-sectional dimension as a cross-sectional dimension of the first engagement device. 
     
     
         27 . The arrangement according to  claim 20 , wherein the second engagement device comprises a holder portion and an engagement portion, the engagement portion being rotatably attached to the holder portion. 
     
     
         28 . The arrangement according to  claim 27 , wherein the holder portion of the second engagement device has at least one attaching portion extending away from the engagement portion the at least one attaching portion extending into at least one receiving portion of the cover portion for captively attaching the second engagement device to the cover portion. 
     
     
         29 . The arrangement according to  claim 20 , wherein the attaching portion extends in a direction substantially parallel to the rotation axis. 
     
     
         30 . The arrangement according to  claim 20 , wherein the at least one attaching portion has at least one protruding portion, the at least one protruding portion being arranged to cooperate with at least one protruding portion of the cover portion for captively attaching the second engagement device to the cover portion. 
     
     
         31 . The arrangement according to  claim 20 , wherein the at least one attaching portion of the second engagement device has a resilient structure. 
     
     
         32 . The arrangement according to  claim 20 , wherein the at least one attaching portion comprises at least three attaching portions cooperating with at least three separate receiving portions of the cover portion. 
     
     
         33 . The arrangement according to  claim 20 , wherein the attaching portion of the second engagement device comprises a protrusion extending in a direction away from the rotation axis of the second engagement device, and the cover portion comprises a protrusion extending in a direction towards the rotation axis of the second engagement device, said protrusions being arranged to cooperate such that the second engagement device is captively attached to the cover portion. 
     
     
         34 . The arrangement according to  claim 20 , wherein the arrangement comprises at least two first engagement device and at least two second engagement device, each of the at least two second engagement device being arranged to cooperate with a respective one of the at least two first engagement device. 
     
     
         35 . The arrangement according to  claim 20 , wherein the at least one first engagement device is a bolt and the at least one second engagement device is a nut arranged to cooperate with the bolt.