| 摘要 |
A hearing aid includes a main body and a battery holder that can be opened and closed with respect to the main body by revolving around a revolving shaft. The main body has a lock bar provided so as to traverse the space in which the battery holder is installed, and a protruding portion that protrudes toward this installation space. The battery holder has a first concave portion and a second concave portion that latch the lock bar and the protruding portion. |
