| 摘要 |
PROBLEM TO BE SOLVED: To prevent sealing material from spreading in the lateral direction from the opening part of a sealing groove at foaming of the sealing material by forming the sealing groove so that the opening width in the section squarely crossing with the lengthwise direction is smaller than the inner width. SOLUTION: This sealing groove 20 is formed so that the inner sides 20a, 20a on both sides are made into slopes and a projecting part A is formed on the center of the inner bottom face 20b. When sealing material E filled in the sealing groove 20 is foamed, the sealing material E is not spread in the lateral direction from the opening part of the sealing groove 20, and because the inner sides 20a are made into slopes in particular, foaming of the sealing material E is performed along the inner sides 20a smoothly in a directional property so as to stably obtain fixed foaming height (h). Hereby, the battery frame 10 can be provided with favorable watertight performance between a body floor and itself. |
