Patent ID: 9016666
Filing Date: 2015-04-28
Classification: B66D,F16D

Abstract:
1. A load sensing transmission that inputs an external rotation and outputs a low speed rotation or a high speed rotation switched depending on a high load or a low load, the load sensing transmission comprising: a variable speed mechanism to decelerate the input external rotation and transmit it as a low speed or to transmit the same rotating speed as that of the input external rotation as a high speed; a load sensing mechanism to sense a high load or a low load of an output side of the variable speed mechanism; and a switching mechanism, which is driven by the load sensing mechanism, to switch an output rotation of the variable speed mechanism to a low speed state or a high speed state by engaging with or disengaging from the variable speed mechanism, wherein the load sensing mechanism includes a holding mechanism to maintain the high speed state until a load exceeds an upper limit of a predetermined load variation range when the load sensing mechanism senses a low speed switching load in case of the switching from the high speed to the low speed to switch the switching mechanism from the high speed state to the low speed state, and to maintain the low speed state until a load lowers below a lower limit of the load variation range when the load sensing mechanism senses a high speed switching load in case of the switching from the low speed to the high speed to switch the switching mechanism from the low speed state to the high speed state.