Rotary shaft for a piece of seating furniture

Abstract

Rotary shaft for an item of seating furniture, comprising a rotary spindle rotatably guided in a rotary sleeve, wherein the rotary spindle comprises a radial groove into which a pin radially protrudes from the rotary sleeve, wherein the groove is formed to be not completely circumferential.

1 . Rotary shaft for an item of seating furniture, comprising:
 a rotary spindle rotatably guided in a rotary sleeve, wherein the rotary spindle comprises a radial groove,   a pin radially protrudes from the rotary sleeve into the groove, wherein the groove is formed to be not completely circumferential.   
     
     
         2 . The rotary shaft as claimed in  claim 1 , including cushioning stops at end sides of the groove. 
     
     
         3 . The rotary shaft as claimed in  claim 2 , wherein the cushioning stops comprise elastomer inserts. 
     
     
         4 . The rotary shaft as claimed in  claim 2 , including a receptacle connecting the end sides between the end sides of the groove. 
     
     
         5 . The rotary shaft as claimed in  claim 1 , including friction-reducing inserts between the rotary sleeve and the rotary spindle. 
     
     
         6 . The rotary shaft as claimed in  claim 1 , wherein the groove of the metallic rotary spindle is milled from the solid material. 
     
     
         7 . An item of seating furniture, comprising:
 a seating surface, a base and a rotary shaft between said base and said seating surface;   said rotary shaft including a rotary spindle rotatably guided in a rotary sleeve, wherein the rotary spindle includes a radial groove,   a pin radially protrudes from the rotary sleeve into the groove, wherein the groove is formed to be not completely circumferential.   
     
     
         8 . The item of seating furniture as claimed in  claim 7  comprising a swivel chair or reclining chair. 
     
     
         9 . The item of seating furniture as claimed in  claim 7 , including cushioning stops at the end sides of the groove. 
     
     
         10 . The item of seating furniture as claimed in  claim 9 , wherein the cushioning stops comprise elastomer inserts. 
     
     
         11 . The item of seating furniture as claimed in  claim 9 , including a receptacle connecting the end sides between the end sides of the groove. 
     
     
         12 . The item of seating furniture as claimed in  claim 7 , including friction-reducing inserts between the rotary sleeve and the rotary spindle. 
     
     
         13 . The item of seating furniture as claimed in  claim 7 , wherein the groove of the metallic rotary spindle is milled from the solid material. 
     
     
         14 . The item of seating furniture as claimed in  claim 10 , including a receptacle connecting the end sides between the end sides of the groove. 
     
     
         15 . The item of seating furniture as claimed in  claim 9 , including friction-reducing inserts between the rotary sleeve and the rotary spindle. 
     
     
         16 . The item of seating furniture as claimed in  claim 9 , wherein the groove of the metallic rotary spindle is milled from the solid material. 
     
     
         17 . The rotary shaft as claimed in  claim 3 , including a receptacle connecting the end sides between the end sides of the groove. 
     
     
         18 . The rotary shaft as claimed in  claim 2 , including friction-reducing inserts between the rotary sleeve and the rotary spindle. 
     
     
         19 . The rotary shaft as claimed in  claim 2 , wherein the groove of the metallic rotary spindle is milled from the solid material.