| 摘要 |
A desk for lecture is provided to maintain the coupling of a cam bracket and a support body firmly with a simple structure and to restrain the friction noise due to a gap between components when an upper plate is folded. A desk for lecture includes a support body(20), a cam bracket(30), a rectangular placement recess(34), a pressurizing unit(40) and an adjusting hole(21). The cam bracket is installed on the upper end of the support body to support an upper plate of a desk to pivot with a pivoting shaft. The pressurizing unit is fitted into the placement recess and produces coupling force by pressurizing the inner circumference of the support body selectively with a control screw(43) that is screw coupled. The adjusting hole is formed on one side of the upper end portion of the support body for insertion of a tool for controlling the control screw.
|
