| 摘要 |
PURPOSE: A battery case is provided to prevent the reverse insertion or wrong insertion of a knob and latch which have constant directionality. CONSTITUTION: A battery case comprises: a latch(30) in which a fixed protrusion(31) is formed in one end, , an elastic part(36) is formed in the other end(36), and a first coupling groove(32), asymmetrical based on longitudinal direction or transversal direction, is formed; a first case in which a first through-hole(12) is formed, and a second through-hole in which the fixed protrusion is entered in and out is formed; and a knob(20), in which a first coupling protrusion inserted into the first coupling groove through the first through-hole is formed. The first coupling groove is formed to have an asymmetrical shape along longitudinal direction, and a symmetrical shape along transversal direction.
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