公开(公告)号：US11834128B2

公开(公告)日：2023-12-05

申请号：US17425324

申请日：2019-12-19

申请人： SRAM, LLC

发明人： Dietmar Greven ,  Kai Venhoff ,  Axel Hemsing ,  Peter Thiele

IPC分类号： B62M3/00 ,  B62K19/34 ,  B62M6/40 ,  B62M6/55

CPC分类号： B62M3/003 ,  B62K19/34 ,  B62M6/40 ,  B62M6/55

摘要： A pedelec bottom bracket drive unit includes a rigid drive housing and a tolerance compensation sheet-metal spring which is arranged to stand substantially in a vertical plane. The tolerance compensation sheet-metal spring includes at least one fixing point at a housing side and at least one mounting point for fastening the tolerance-compensating sheet-metal spring to a pedelec-frame-side drive mount. The at least one fixing point has a fixing point traverse axis. The tolerance compensation sheet-metal spring is fixed to the rigid drive housing at the at least one fixing point at the housing side. The at least one mounting point has a mounting point traverse axis. The at least one mounting point is arranged offset with respect to a next adjacent fixing point of the at least one fixing point as viewed from the fixing point traverse axis and from the mounting point traverse axis.

公开(公告)号：US11655002B2

公开(公告)日：2023-05-23

申请号：US17280262

申请日：2019-09-10

申请人： SRAM, LLC

发明人： Berno Johannes Engelbert Misgeld ,  Dietmar Greven

IPC分类号： B62M6/55 ,  B62J45/411 ,  B62J45/415 ,  B62M6/50

CPC分类号： B62M6/55 ,  B62J45/411 ,  B62J45/4152 ,  B62M6/50

摘要： An electric pedelec bottom bracket drive includes a drive unit, a drive controller, and an ambient temperature detector. The drive unit includes a drive unit housing, a drive motor arranged therein, and a housing temperature sensor which measures a housing temperature. The drive controller supplies electrical drive energy to the drive motor and includes a housing temperature control module which is connected to the housing temperature sensor and which controls an electrical drive energy to not exceed a housing limit temperature. The ambient temperature detector is arranged to detect an air temperature outside of the drive unit housing and is connected to the housing temperature control module. The housing temperature control module limits a maximum electrical drive energy as a function of the air temperature when the housing temperature measured by the housing temperature sensor is above a control intervention limit temperature which is below the housing limit temperature.