| 摘要 |
PROBLEM TO BE SOLVED: To prevent a defective joint from occurring in a lid joining structure for a battery pack and to reduce man-hours for the joining. SOLUTION: A plurality of symmetrical arrow-shaped tongue pieces (5) are formed on a contact surface between upper and lower lid bodies 1, 2 of a battery pack, lock pieces 9 are formed by chin parts of each arrow shape, and a slit groove 11 is formed axially at the center of each arrow shape from the tip end to the base end part. Lock holes (6) are formed in a surface of the upper lid body 1 at positions corresponding to the tongue pieces (5), and the mouths of the holes (6) are each formed into a narrowed hole 12 into which the tongue piece 5 can be inserted with its tip end elastically narrowed by means of the slit groove, while a widened hole 13 is formed in the innermost recess of the narrowed hole 12 for locking the arrow-shaped lock piece 9 by allowing the tongue piece (5) to open elastically.
|
