| 摘要 |
<p>PURPOSE: A tilting device of a chair is provided, which enhances reliability about a product and makes a user comfortable by maintaining the rotation angle ratio of a seat plate constant. CONSTITUTION: A tilting device of a chair comprises a base and a seat plate supporting part(200) which is equipped to pivot in the base and supports the seat plate(20); a back board supporting part(300) which is equipped to be mobile in the base and seat plate supporting part. The back board supporting part and seat plate supporting part are connected to be mutually mobile by the first guidance unit(400). The back board supporting part and base are connected to be mutually mobile by a second guidance unit. The front part of the seat plate supporting part and front part of the base are pivotally connected by a hinge unit. The first and the second guidance units are located to be modularized with the base under the base the seat plate.</p> |
