| 摘要 |
PURPOSE: A height adjustable pillow is provided to reduce friction noise generated from X-shaped link members. CONSTITUTION: A height adjustable pillow comprises a base plate(100), an elevating plate(200), left and right sides X-shaped link members(500,600), a bearing and a driving tool. The left and right side X-shaped link members are installed between a base plate and an elevating plate. The driving tool operates the left and right sides X-shaped link members. The left and right sides X-shaped link member comprises a first link, a second link, and a connection pin. The first link includes a fixed end and a movable end, and contacts the upper end to the elevating plate. The upper and lower ends of the second link are movable ends which can be driven to the left and right sides. |
