Stepping mechanism
AssigneeRobert Bosch GmbH
InventorJosef Zieringer
Life of this patent
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Abstract
A stepping mechanism comprises a toothed wheel and a shifting member which shifts toothed wheel by a tooth pitch. The movement plane of the shifting member extends at a right angle to that of the toothed wheel. A two-armed shifting pawl which is supported on a reciprocating slide so as to be swivelable and has a tooth guiding surface, serves as the shifting member and is inclined with respect to the movement direction of the slide and is switched over to the opposite inclination after every shifting cycle.
Claims8
Stepping mechanism comprising a toothed wheel and a shifting member which engages a tooth of said wheel and shifts the toothed wheel by a tooth pitch in each shifting cycle, said shifting member being movable in a movement plane which extends at a right angle to that of said toothed wheel;
- and a reciprocating slide, said shifting member being formed by a two-armed shifting pawl (3) which is swivelably supported on said reciprocating slide (1) and has a tooth guiding surface (4) which is inclined with respect to a movement direction of said slide, said pawl being switchable over to opposite inclination after each shifting cycle, at least a length and an angle of inclination of said pawl being adapted to the tooth pitch of said toothed wheel (5).
Dependencies are inferred from the claim text.