| 摘要 |
PURPOSE:To enable the replacement of a battery while maintaining the supply of electricity, by mounting a battery in a slidable manner for a storage chamber and forming a linear contact point which extends in sliding direction on one and forming a contact point in slidable manner to the other. CONSTITUTION:In the replacement of a battery, a cover 8 is opened, and a new battery 6b is pushed from the rear part, and the engagement piece 17 of an old battery 6a is engaged with an engagement groove 11, in the state where the rear half part projects, and the shift is restrained, and the unexpected drop is prevented. The engagement with the groove 11 is released by revolving the engagement piece 17, and the battery 6a is taken out perfectly, and the new battery 6b is perfectly mounted, and the cover 8 is closed to complete work. In the state where the engagement piece 17 is engaged with the groove 11, one contact point of a battery storage chamber 5 contacts the linear contact point of the battery 6a, and the other contact point of the storage chamber 5 starts the contact with the linear contact point of the battery 6b, and the cut-off of the power supply to a measurement device body 1 is prevented in the process of the replacement of the battery 6b, and a variety of input information can be held. |
