A kind of piano key type bookshelf
A bookshelf and key-type technology, which is applied in the field of learning tools, can solve problems such as untidy, overused, and difficulty in putting books back on the shelf, and achieve the effect of enhancing the degree of difficulty
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[0020] Embodiment 1: as Figure 1-4 As shown, a piano key type bookshelf includes a bookshelf frame 1, a baffle plate 2, a narrow bamboo strip 3, a shaft 4, a shaft sleeve 5, and a spring 6. The bookshelf frame 1 is a cuboid with an open front side, and a plurality of shaft sleeves 5 are arranged side by side. Installed on the front and back ends of the bottom plate of the bookshelf frame 1 and the upper and lower ends inside the rear side plate, the axle sleeves 5 at the front and rear ends on the bottom plate of the bookshelf frame 1 are equal in number and symmetrical in position, and the axle sleeves 5 at the upper and lower ends inside the rear side plate of the bookshelf frame 1 The number is equal and the position is symmetrical. The bushing 5 at the rear end of the bottom plate of the bookshelf frame 1 is equal to the bushing 5 at the inner lower end of the rear side plate and the position is symmetrical, that is, the bushing 5 on the bottom plate of the bookshelf frame...
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