The invention relates to an anti-falling blackboard eraser, belonging to the technical field of teaching aids. The invention consists of a shell and a erasing felt. The shell is rectangular box-shaped. An anti-falling mechanism is arranged on the shell. A magnet sheet is fixed on the lower surface of the shell, and a erasing felt is arranged on the bottom of the shell through a magic paste. The invention not only realizes that the outer shell can be fitted on the blackboard, but also can be fitted on the blackboard by erasing the felt surface, so as to avoid the waste of time when the blackboard eraser is placed arbitrarily, which leads to the need to look for when it is used; more importantly, the anti-dropping mechanism is simple in structure and easy to make, which can effectively prevent the blackboard eraser from dropping off in the course of use and avoid the blackboard eraser falling to the ground in the The problem of chalk ash flying wildly will give teachers and students a clean learning place.
【技术实现步骤摘要】
一种防脱落的黑板擦
本专利技术涉及一种防脱落的黑板擦,属教学辅助用具
技术介绍
黑板擦是教学过程中经常需要使用的工具,现有黑板擦基本上都是通过塑料壳体和在其内卡接设置的擦除毛毡构成,擦黑板时容易从手中脱落,当吸附粉笔灰的黑板擦从1.5m来高的地跌落地板时,粉笔灰会从擦除毛毡中飘散出来,容易让正在擦除黑板的教师或学生、以及靠近讲台边的同学吸入更多的粉笔灰进入身体里,长期下去容易造成肺部疾病。所以,需要一种在擦除黑板时不容易脱落的黑板擦用于解决上述问题。
技术实现思路
本专利技术的目的在于,针对上述现有技术的不足,提供一种结构简单、制作方便的、能有效防止使用中的黑板擦脱落的防脱落黑板擦。本专利技术是通过如下技术方案来实现上述目的的:该防脱落的黑板擦由外壳和擦除毛毡构成,其特征在于:外壳呈长方体形盒状,外壳上设置有防脱落机构,外壳内的下表面固装有磁铁片,外壳底面通过魔术贴设置有擦除毛毡。所述的防脱落机构为软磁铁条,软磁铁条安装设置在外壳的上表面,软磁铁条的两端可在外壳上自由移动一段距离。所述的外壳上表面的中部横向设置有放置软磁铁条的凹槽,凹槽两侧的槽壁上分别设置有 ...
【技术保护点】
1.一种防脱落的黑板擦,它由外壳(1)和擦除毛毡(2)构成,其特征在于:外壳(1)呈长方体形盒状,外壳(1)上设置有防脱落机构,外壳(1)内的下表面固装有磁铁片,外壳(1)底面通过魔术贴设置有擦除毛毡(2)。
【技术特征摘要】
1.一种防脱落的黑板擦,它由外壳(1)和擦除毛毡(2)构成,其特征在于:外壳(1)呈长方体形盒状,外壳(1)上设置有防脱落机构,外壳(1)内的下表面固装有磁铁片,外壳(1)底面通过魔术贴设置有擦除毛毡(2)。2.根据权利要求1所述的一种防脱落的黑板擦,其特征在于:所述的防脱落机构为软磁铁条(3),软磁铁条(3)安装设置在外壳(1)的上表面,软磁铁条(3)的两端可在外壳(1)上自由移动一段距离。3.根据权利要求2所述的一种防脱落的黑板擦,其特征在于:所述的外壳(1)上表面的中部横向设置有放置软磁铁条(3)的凹槽(4),凹槽(4)两侧的槽壁上分别设置有供软磁铁条(3)移动的通孔条(5)。4.根据权利要求2或3所述的一种防脱落的黑板擦,其特征在于:所述的软磁铁条(3)的两端分别设置有移动限位块(6)。5....
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