| 摘要 |
A PAIR OF SIDE MEMBERS 1 ARE JOINED TO EACH OTHER WITH A LOWER CROSSMEMBER 3D UNDERNEATH A FLLOR PANEL MEMBER 7,ENDS OF AN UPPER CROSSMEMBER 25 ARE CAUSED TO PENETRATE SIDE WALL MEMBERS 20,21,OF A VEHICLE SO AS TO BE FIXED THERERAT, AND REINFORCEMENT MEMBERS 23A,24,27 ARE DISPOSED ALONG THE SIDE WALL MEMBERS 20, 21 SO AS TO JOIN THE UPPER CROSSMEMBER 25 TO THE LOWER CROSSMEMBER 3D, WHEREBY A QUADRANGULAR FRAME STRUCTURE IS FORMED FOR JOINING THE LEFT-AND RIGHT-HAND SIDES OF THE VEHICLE, THE QUADRANGULAR FRAME STRUCTURE BEING CONSTITUTED BY THE UPPER CROSSMEMBER 25 AS AN UPPER MEMBER, THE LOWER CROSSMEMBER 3D AS A LOWER MEMBER, AND THE REINFORCEMENT MEMBERS 23A, 24,27 AS LEFT AND RIGHT SIDE MEMBERS.FIGURE 1
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