| 摘要 |
A desk for lecture is provided to enhance durability of the apparatus by equipping with a unit in which a stopper can absorb shock without the same displacement as the lifting rod. A desk for lecture comprises: a housing(61) in which the guide fixing hole(612) which is penetrated in the horizontal direction and in which the guide piece is inserted is formed; a buffer spring inserted into the housing; a first cushion rod(64) which is positioned on the top of the buffer spring and in which the axis insertion groove(641) is formed; a pressure spring(65) positioned on the top of the first cushion rod; a locking rod which vertically and regularly moves; a rotation axis(9) in which the axis insertion groove(91) is formed; a pressing axis(71) extended to the wheel cover; a stopper block(73) having the buffer force to vertical direction pressure; and a stopper(7) formed of the fixture piece(74).
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