Shifting arm

Abstract

A shifting arm for transmitting shifting movements is a formed part which is formed without cutting from a thin sheet. It includes a mouth recess in from an edge of the sheet, and stop faces are formed along the edges of the recess and out of the plane of the sheet.

What is claimed is:  
     
         1 . A sheet-metal shifting arm for transmitting shifting movements, the shifting arm is a formed part which is formed from a thin sheet without cutting the sheet.  
     
     
         2 . The shifting arm as claimed in  claim 1 , wherein the sheet has a thickness of up to 2 mm in its initial state before the forming of the shifting arm.  
     
     
         3 . The shifting arm as claimed in  claim 1 , wherein the material of the shifting arm is a deep-drawing steel.  
     
     
         4 . The shifting arm as claimed in  claim 1 , wherein the material of the shifting arm is a low-alloy deep-drawing steel.  
     
     
         5 . The shifting arm as claimed in  claim 1 , wherein a shifting element is connected to the shifting arm by a welding process; the shifting element is moveable with respect to a longitudinal center axis thereof.  
     
     
         6 . The shifting arm as claimed in  claim 5 , wherein the shifting element is a shifting rod which is displaceable along its longitudinal center axis and is pivotable about its longitudinal center axis.  
     
     
         7 . The shifting arm as claimed in  claim 5 , wherein the shifting element is a shifting fork.  
     
     
         8 . A sheet-metal shifting arm for transmitting shifting movements, wherein the shifting arm is a formed part which is formed without cutting from a thin sheet, the arm has a recess which is open in the shape of a mouth toward one edge of the shifting arm, wherein the mouth is for the engagement of a shifting finger.  
     
     
         9 . The shifting arm as claimed in  claim 8 , wherein the recess is at least partially bounded by at least two stop faces which lie opposite each other and face each other.  
     
     
         10 . The shifting arm as claimed in  claim 8 , wherein the at least two stop faces lie plane-parallel opposite each other, face each other and are formed without cutting of the sheet; the sheet having at least one angled section out of the plane of the sheet and the step faces being formed on the at least one angled section of the sheet.  
     
     
         11 . The shifting arm as claimed in  claim 8 , wherein the recess is bounded at least partially by at least two stop faces which lie plane-parallel, are opposite each other, face each other and are formed without cutting of the sheet; the sheet having at least one angled section out of the plane of the sheet and the step faces being formed on the angled sections of the sheet; 
 the distance between the stop faces lying opposite each other, has an accuracy which permits a deviation from the desired value of the distance of at maximum {fraction (1/10)} mm, and the distance is set by machining of the sheet without cutting.    
     
     
         12 . The shifting arm as claimed in  claim 8 , wherein the recess is at least partially bounded by at least two stop faces which lie opposite each other, face each other and are formed without cutting of the sheet; at least one of the stop faces on at least one side adjoining a body edge of the sheet, the sheet adjoining the body edge where the sheet is rounded without cutting of the sheet.  
     
     
         13 . The shifting arm as claimed in  claim 8 , wherein the recess is at least partially bounded by at least two stop faces, which lie opposite each other, face each other and are formed without cutting of the sheet; 
 the sheet having at least one angled section out of the plane of the sheet;    the shifting arm having at least one body edge which delimits the stop face on at least one side to form a lateral face of the shifting arm, and the body edge has a chamfer that is formed on it without cutting of the sheet.    
     
     
         14 . The shifting arm as claimed in  claim 8 , wherein the recess is at least partially bounded by at least two stop faces, which lie opposite each other, face each other and are formed without cutting; 
 the sheet having at least one angled section out of the plane of the sheet;    the shifting arm having at least one body edge on the angled section which delimits the stop face on at least one side to form a lateral face of the shifting arm, and the body edge has a chamfer formed on it without cutting of the sheet;    a distance describing the chamfer in a cross section of the shifting arm between an edge, which bounds the stop face at a side toward the chamfer, and an imaginary common cut edge which extends parallel to the edge of the stop face and is extended beyond the chamfer, the imaginary common cut edge together with the lateral face of the shifting arm has an accuracy which permits a deviation from the desired value of the distance of a maximum {fraction (1/10)} mm.    
     
     
         15 . A sheet-metal shifting arm for transmitting shifting movements, wherein the shifting arm is a flat formed part which is formed from a thin sheet without cutting of the sheet, the formed part having one end in a fork-shape, the one end having two prong-shaped projections and having at least one edge which is formed by an angled section out of the plane of the sheet, each of the projections having at least one stop face on the angled section having another stop face on the other of the projections, the faces lie opposite each other.  
     
     
         16 . The shifting arm as claimed in  claim 15 , wherein the shifting arm has at least one tab leading off from the shifting arm, enabling the shifting arm to be connected to a shifting element by at least one weld on the tab.  
     
     
         17 . The shifting arm as claimed in  claim 15 , wherein the shifting arm includes at least one formation of the sheet that is of bead-shape.  
     
     
         18 . A sheet-metal shifting arm for transmitting shifting movements, wherein the shifting arm has a bracket-shape and the arm is formed from a thin sheet without cutting of the sheet; 
 the shifting arm having a first wall section with a recess opening therein in the shape of a mouth opening toward one edge of the shifting arm, and the opening being adapted for engagement of a shifting finger;    the recess being at least partially bounded by at least two stop faces, which lie opposite each other, face each other and are formed without cutting of the sheet; the sheet having angled sections out of the plane of the sheet in which the stop faces are formed;    the sheet including three further wall sections which are angled out of the plane of the sheet and angled out of the first wall section and which projects in the same direction out of the plane, and the first wall section merging integrally into the three further wall sections.    
     
     
         19 . The shifting arm as claimed in  claim 18 , wherein the three further wall sections are formed integrally with one another.  
     
     
         20 . The shifting arm as claimed in  claim 18 , wherein the three further wall sections are bent off from the first wall section, and the three further wall sections are brought together so that each two of the further wall sections are fastened to each other.  
     
     
         21 . The shifting arm as claimed in  claim 18 , wherein the shifting arm includes at least one formation of the sheet that is of bead design.