US 12,187,111 B2
Lower structure for vehicle
Shintaro Harugaichi, Hiroshima (JP); Daisuke Sakagami, Hiroshima (JP); Sho Yoshida, Hiroshima (JP); Daisuke Tsuji, Hiroshima (JP); Shuang Gao, Hiroshima (JP); and Yoshie Nishimoto, Hiroshima (JP)
Assigned to MAZDA MOTOR CORPORATION, Hiroshima (JP)
Filed by Mazda Motor Corporation, Hiroshima (JP)
Filed on May 6, 2022, as Appl. No. 17/738,006.
Claims priority of application No. 2021-087357 (JP), filed on May 25, 2021.
Prior Publication US 2022/0379707 A1, Dec. 1, 2022
Int. Cl. B60K 1/04 (2019.01); B62D 21/15 (2006.01); B62D 25/20 (2006.01)
CPC B60K 1/04 (2013.01) [B62D 21/157 (2013.01); B62D 25/2036 (2013.01); B60K 2001/0438 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A lower structure for the vehicle, the lower structure comprising:
a battery unit, the battery unit including a battery case and a battery disposed in the battery case where the battery is configured to store electrical energy that the vehicle uses to travel, which is provided under a floor panel constituting a vehicle body floor;
a frame member which extends in a front-rear direction on a vehicle-width-direction outer side of the battery unit;
a high-voltage cable which extends forward from a front portion of the battery unit;
a fixing member which fixes a rear portion of the battery unit to the frame member, wherein
the fixing member is configured to fracture when an inward collision load in a vehicle width direction is input to a position in front of a position of a center of gravity of the battery unit;
a side sill which extends in the front-rear direction on a vehicle-width-direction outer side of the floor panel; and
a floor frame and a rear side frame which are adjacent to the side sill on a vehicle-width-direction inner side and extend in the front-rear direction, wherein
the floor frame is provided in front of the rear side frame, a rear portion of the floor frame and a front portion of the rear side frame are joined to each other,
the frame member is at least one of the floor frame and the rear side frame,
the fixing member has a vehicle-body fastening portion, first and second battery fastening portions which are spaced apart in the front-rear direction, and a hole portion which is formed between the first battery fastening portion and the second battery fastening portion,
the first battery fastening portion is positioned in front of the second battery fastening portion,
a front-rear direction length between the vehicle-body fastening portion and the first battery fastening portion is longer than a front-rear direction length between the vehicle-body fastening portion and the second battery fastening portion, and
the second battery fastening portion is positioned below the first battery fastening portion.