Actuating gear mechanism

Abstract

An actuating gear unit for an electrical camshaft adjuster is provided. The actuating gear unit includes a housing with a cylindrical basic shape, having an input-side end provided on the drive side for coupling to an actuating motor, in particular an electric motor, and an output-side end for coupling to an output shaft. A rotation angle limiter for limiting the rotation of the output shaft relative to the housing is arranged on the input-side end.

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . An actuating gear mechanism designed as a strain wave gear, the actuating gear mechanism comprising:
 a housing having:
 an input-side end configured for attaching an actuating motor; and, 
 an output-side end configured for attaching an output shaft; and, 
   a rotation angle limiter for limiting rotation of the output shaft relative to the housing, the rotation angle limiter arranged on the input-side end of the housing.   
     
     
         12 . The actuating gear mechanism of  claim 11 , further comprising:
 a ring gear arranged within the housing, the ring gear configured to be connected to the output shaft; and,   a flexible transmission ring arranged at least partially within the ring gear, the flexible transmission ring having external toothing to engage internal toothing of the ring gear.   
     
     
         13 . The actuating gear mechanism of  claim 12 , wherein the flexible transmission ring is a collared sleeve having a collar, the rotation angle limiter arranged axially between the collar and the housing. 
     
     
         14 . The actuating gear mechanism of  claim 12 , wherein a compensating coupling is arranged axially between the rotation angle limiter and the external toothing of the flexible transmission ring. 
     
     
         15 . The actuating gear mechanism of  claim 12 , wherein the rotation angle limiter is formed between the ring gear and the housing. 
     
     
         16 . The actuating gear mechanism of  claim 12 , wherein the flexible transmission ring is a collared sleeve having a collar mounted at the input-side end of the housing, the collar arranged in front of the rotation angle limiter. 
     
     
         17 . The actuating gear mechanism of  claim 16 , further comprising a thrust washer arranged between the collar and the housing. 
     
     
         18 . The actuating gear mechanism of  claim 17 , wherein the rotation angle limiter is formed between the thrust washer and the ring gear. 
     
     
         19 . The actuating gear mechanism of  claim 18 , wherein the thrust washer includes at least two rotational stops that engage the ring gear. 
     
     
         20 . The actuating gear mechanism of  claim 19 , wherein an input-side end of the ring gear includes at least two rotational stops that engage the at least two rotational stops of the thrust washer. 
     
     
         21 . The actuating gear mechanism of  claim 19 , wherein the thrust washer includes at least two arc-shaped recesses that provide that at least two rotational stops. 
     
     
         22 . The actuating gear mechanism of  claim 21 , wherein the at least two arc-shaped recesses comprise of a first recess and a second recess. 
     
     
         23 . The actuating gear mechanism of  claim 22 , wherein the first recess provides a first rotational stop at a first end and a second rotational stop at a second end. 
     
     
         24 . The actuating gear mechanism of  claim 22 , wherein the first recess provides a first rotational stop, and the second recess provides a second rotational stop. 
     
     
         25 . The actuating gear mechanism of  claim 22 , wherein the at least two arc-shaped recesses are configured to provide unbalance compensation. 
     
     
         26 . The actuating gear mechanism of  claim 11 , wherein the housing is configured as an input element of the actuating gear mechanism. 
     
     
         27 . The actuating gear mechanism of  claim 26 , wherein the housing includes external toothing to interact with a chain, belt or gear. 
     
     
         28 . The actuating gear mechanism of  claim 11 , wherein the housing is non-rotatable. 
     
     
         29 . The actuating gear mechanism of  claim 28 , wherein the housing is connected an engine block of an internal combustion engine. 
     
     
         30 . An actuating gear mechanism designed as a strain wave gear for an electric camshaft phaser, the actuating gear mechanism comprising:
 a housing having:
 an input-side end configured for attaching an actuating motor; and, 
 an output-side end configured for attaching a camshaft of an internal combustion engine; 
   a ring gear arranged within the housing, the ring gear configured to be connected to the camshaft;   a collared sleeve arranged at least partially within the ring gear, the collared sleeve having:
 external toothing to engage internal toothing of the ring gear; and, 
 a collar mounted at the input-side end of the housing; 
   a thrust washer arranged between the collar and the housing; and,   a rotation angle limiter for limiting rotation of the camshaft relative to the housing, the rotation angle limiter formed between an input-side end of the ring gear and the thrust washer.