| 摘要 |
Also, rear-side connectors 37 are provided at the respective rear-side end portions of battery containing bodies 21, and are directly connected to chassis-side connectors 26 provided in chassis 1 when battery containing bodies 21 are inserted. Such connection structure requires no cable and enables connection/disconnection between the connectors accompanying insertion/removal of battery containing body 21, enabling enhancement in work efficiency. Furthermore, as illustrated in Figure 3B , chassis-side connectors 26 form an particular arrangement as with front-side connectors 32 described above. In other words, the chassis-side connectors are arranged in parallel on the upper side or the lower side relative to a center in the height direction of the battery containing body housing section and rear-side connectors 37 of battery containing bodies 21 as housed are also arranged so as to correspond to such arrangement. If battery containing bodies 21 are arranged in parallel in each of the first and second housing sections, chassis-side connectors 26 in the first housing section (on the lower-tier side) are arranged in parallel on the upper side relative to the center in the height direction of the first housing section, and chassis-side connectors 26 in the second housing section (on the upper-tier side) are arranged in parallel on the lower side relative to the center in the height direction of the second housing section, and rear-side connectors 37 of the battery containing bodies as housed are also arranged so as to correspond to such arrangement. In such connector arrangement, (regardless of existence or non-existence and/or arrangement of front-side connectors 32), the vertical position of each battery containing body 21 at the time of insertion is determined, and thus, it is necessary to prevent wrong insertion of upside-down battery containing body 21. |
