A movable blackboard for primary school mathematics teaching comprises a bottom support, a supporting board is arranged on the bottom support, first side boards are arranged on the left side and the right side of the top of the supporting board and are connected with elastic blocks, second side boards are arranged between the elastic blocks, a top board is connected to the first side boards, a groove is formed in the supporting board, and a first motor is arranged on the left side wall of the groove. A first screw is arranged at the right end of the first motor, a second screw is arranged at the right end of the first screw, first connecting pieces are connected to the outer sides of the first screw and the second screw, boxes are arranged at the front and rear ends of the first connectingpieces, elastic wiping blocks are arranged in the boxes, and a dust suction device is arranged on the supporting board. Closed space is defined by the two first side boards, the two second side boards, the supporting board and the top board jointly, and therefore the dust wiping process is conducted in the closed space, the situation that dust overflows and damages the body health of a user is avoided, writing can be conducted on the inner side faces and the outer side faces of the two rotating second side boards, the writing area is enlarged, and meanwhile the effect that questions or answers can be completely hidden in advance is achieved.
一种小学数学教学用可移动式黑板,包括底部支架,底部支架上有支撑板,支撑板顶部左右两侧有第一侧板,第一侧板连接弹性块,弹性块间有第二侧板,第一侧板上连接顶板,支撑板上开设凹槽且凹槽左侧壁有第一电机,第一电机右端有第一螺杆,第一螺杆右端有第二螺杆,第一螺杆与第二螺杆外侧连接第一连接件,第一连接件前后两端有盒体,盒体内有弹性擦拭块,支撑板上有吸灰装置。本发明通过两块第一侧板、两块第二侧板、支撑板与顶板共同围成了一个密闭空间,从而将粉尘的擦除过程放在密闭空间内进行,防止粉尘溢出损害用户的身体健康,转动的两块第二侧板的内外侧面均可以进行书写,扩大了书写面积,同时有能够将题目或者答案完全预先隐藏的效果。
Movable blackboard for primary school mathematics teaching
一种小学数学教学用可移动式黑板
2021-03-16
Patent
Electronic Resource
Chinese