Motor mounting structure of an electric vehicle

Abstract

Motor mounting structure for an electric vehicle (1), comprising: a front floor (6) and a rear floor (8) which is connected to the front floor (6) by means of an intermediate vertical wall area (7); a subframe (9) arranged below the rear floor (8) and comprising a pair of a left side frame section (10) and a right side frame section (11) extending in a longitudinal direction of the motor vehicle, as well as a pair of a front transverse frame section (12) and a rear transverse frame section (13) connecting the two side frame sections (10, 11) to each other; and a drive system (14) which is supported on the subframe (9) by means of a fastening unit (15) and which includes a motor (18) and a transmission (17) which has a differential (16) and is connected in one direction of the width of the motor vehicle to a side area of ​​the motor (18); wherein the front transverse frame area (12) is connected to a front transverse element (27) which is provided at a connection area (26) between the front floor (6) and the vertical wall area (7); wherein the rear transverse frame area (13) is fixed to a rear transverse element (28) which extends along a lower surface side of the rear floor (8) in the direction of the width of the motor vehicle above the differential (16); wherein both side sections of the drive system (14) are supported in the direction of the width of the motor vehicle by means of a left side mounting (20) and a right side mounting (21) which are arranged such that the positions of the left and right side mountings (20, 21) in the longitudinal direction of the motor vehicle and in a vertical direction of the motor vehicle are close to a horizontal line which passes through a center of gravity of the drive system (14) and extends in the direction of the width of the motor vehicle, respectively on the left side frame section (10) and the right side frame section (11); wherein a front mounting (22) and a rear mounting (23) for restricting a rolling movement of the drive system (14) are arranged on the front and rear of the drive system (14), respectively; wherein the front mounting (22) is attached in the direction of the width of the motor vehicle to a central area of ​​the front transverse frame area (12); and wherein the rear attachment (23) is attached to a further transverse element (29) which is arranged behind the subframe (9).

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