| 摘要 |
PURPOSE: A bookshelf is provided to facilitate the height control and assembly of a shelf by moving the shelf upward. CONSTITUTION: A bookshelf comprises a guide part and a shelf support part. The guide part is inserted into a side plate of a bookshelf and is equipped with a plurality of position fixation holes. The shelf support part is installed in order to move up and down within the guide part and supports both sides of the bookshelf. The shelf support part comprises a leveling plate(21), a vertical plate, a guide plate(23), and a main spring. The main spring is located between the leveling plate and vertical plate.
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