SHIFT POSITION DETECTING DEVICE

摘要

A shift position detecting device where a shift position determining member is provided for determining a shift position based on a combination of switching modes of three switches corresponding to at least one of a plurality of projection rows each having a plurality of projection portions in a one-by-one basis, and “1, 1, 1” indicative of an ON state of each switch is allocated as a detection logic at a neutral position arranged between a first speed position and a second speed position, wherein a change in friction at the time of a shift operational to the neutral position is alleviated thus giving an operational feeling with no discomfort to a rider. Two projection rows that are objects to be detected by two specified switches among the three switches are formed so as to change switching modes of the specified switches from an OFF state to an ON state.

主权项

1. A shift position detecting device comprising:
a plurality of projection rows each including projecting portions arranged at a plurality of places in a spaced-apart manner in a circumferential direction of a shift drum constituting a part of a multi-stage transmission having gear trains of a plurality of shift stages that are selectively engagable, and are mounted on the shift drum; three switches fixedly arranged at least one by one corresponding to the plurality of projection rows wherein a switching mode is changed from an OFF state to an ON state by being brought into contact with the projecting portions; and a shift position determining means for determining a shift position by collating the shift position allocated to the detection logic based on the detection logic that is formed of a combination of “1” generated when the switches are in an ON state and “0” generated when the switches are in an OFF state, wherein “1, 1, 1” is allocated as the detection logic at a neutral position arranged between a first speed position and a second speed position; wherein the two projection rows that are objects to be detected by the two specified switches among the three switches are formed to change switching modes of the specified switches from an OFF state to an ON state and to displace timings at which the specified switches are brought into an ON state from each other when the shift position is changed from at least one of the first speed position and the second speed position to the neutral position.