CN206086092U - Business administration teaching assistance board of imparting knowledge to students - Google Patents
Business administration teaching assistance board of imparting knowledge to students Download PDFInfo
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Abstract
本实用新型公开了一种工商管理教学辅助教学板，包括写字板，所述写字板的左侧固定连接有限位板，所述限位板包括限位板体，所述限位板体上开设有限位槽，所述写字板的右侧固定连接有移动板，所述限位板的左侧设置有电机箱，所述电机箱的右侧通过转轴活动连接有滑动轮，且滑动轮与限位板的左侧接触，所述电机箱内腔的左侧固定连接有移动电机。该工商管理教学辅助教学板，通过移动板和吸尘装置的改良以及移动电机、移动杆和清理刷的配合使用，避免了在使用者清理写字板上的粉笔字时，由于黑板擦使用时间过久而导致的粉笔灰弥漫，通过限位板的改良，避免了由于教学板部件老化而导致的移动杆倾斜。
The utility model discloses an auxiliary teaching board for business management teaching, which comprises a writing board. The left side of the writing board is fixedly connected with a limiting board. There is a limit slot, the right side of the writing board is fixedly connected with a moving plate, the left side of the limit plate is provided with a motor box, and the right side of the motor box is movably connected with a sliding wheel through a rotating shaft, and the sliding wheel is connected to the limit plate. The left side of the bit plate is in contact with, and the left side of the inner cavity of the motor box is fixedly connected with a moving motor. The auxiliary teaching board for business administration teaching, through the improvement of the moving board and the dust-absorbing device and the cooperative use of the moving motor, the moving rod and the cleaning brush, avoids when the user cleans up the chalk on the writing board due to the overuse of the blackboard eraser. The chalk dust caused by the long-term permeation, through the improvement of the limit board, the tilt of the moving rod caused by the aging of the teaching board components is avoided.
Description
技术领域technical field
本实用新型涉及辅助教学技术领域，具体为一种工商管理教学辅助教学板。The utility model relates to the technical field of auxiliary teaching, in particular to an auxiliary teaching board for business management teaching.
背景技术Background technique
教学板即从事教育行业书写演示所使用的器具，通常教学板是放置在教室中或会议室中的板面，用粉笔或者水性笔书写内容，起到讲解演示的作用，教学板的前身是黑板，传统的黑板就是简单的将黑色涂料涂抹在平整的木板或者水泥板等坚硬物体表面，待黑漆干后使用粉笔书写。The teaching board is the utensil used for writing demonstrations in the education industry. Usually, the teaching board is a board placed in the classroom or in the meeting room. The content is written with chalk or water-based pen, which plays the role of explaining the demonstration. The predecessor of the teaching board is a blackboard. , the traditional blackboard is simply to apply black paint on the surface of hard objects such as flat wooden boards or cement boards, and write with chalk after the black paint dries.
传统的教学板，在使用者清理写字板上的粉笔字时，容易出现由于黑板擦使用时间过久而导致的粉笔灰弥漫，恶化了使用者的使用环境，给使用者的使用带来不便，同时若使用者长时间吸入过多的粉笔灰，则会给使用者的身体健康带来影响。On the traditional teaching board, when the user cleans the chalk on the writing board, it is easy to appear chalk dust caused by the blackboard eraser being used for a long time, which deteriorates the user's use environment and brings inconvenience to the user. Simultaneously, if the user inhales too much chalk dust for a long time, it will have an impact on the health of the user.
实用新型内容Utility model content
(一)解决的技术问题(1) Solved technical problems
针对现有技术的不足，本实用新型提供了一种工商管理教学辅助教学板，解决了清理写字板时粉笔灰弥漫的问题。Aiming at the deficiencies of the prior art, the utility model provides an auxiliary teaching board for business administration teaching, which solves the problem that chalk dust diffuses when cleaning the writing board.
(二)技术方案(2) Technical solutions
为实现以上目的，本实用新型通过以下技术方案予以实现：一种工商管理教学辅助教学板，包括写字板，所述写字板的左侧固定连接有限位板，所述限位板包括限位板体，所述限位板体上开设有限位槽，所述写字板的右侧固定连接有移动板，所述限位板的左侧设置有电机箱，所述电机箱的右侧通过转轴活动连接有滑动轮，且滑动轮与限位板的左侧接触，所述电机箱内腔的左侧固定连接有移动电机，所述移动电机的输出轴通过联轴器固定连接有移动杆，所述移动杆的右端依次贯穿限位板和移动板并延伸至移动板的右侧，所述移动杆的表面且位于限位板与移动板之间套设有清理刷，所述写字板的底部固定连接有吸尘装置，所述写字板底部的两侧均固定连接有支撑杆，所述支撑杆的底端固定连接有底座。In order to achieve the above purpose, the utility model is realized through the following technical solutions: an auxiliary teaching board for business management teaching, including a writing board, the left side of the writing board is fixedly connected with a limiting plate, and the limiting plate includes a limiting plate body, a limit slot is set on the limit plate body, a moving plate is fixedly connected to the right side of the writing board, a motor box is arranged on the left side of the limit plate, and the right side of the motor box moves through a rotating shaft A sliding wheel is connected, and the sliding wheel is in contact with the left side of the limit plate. The left side of the inner cavity of the motor box is fixedly connected with a moving motor, and the output shaft of the moving motor is fixedly connected with a moving rod through a coupling. The right end of the moving rod runs through the limiting plate and the moving plate in turn and extends to the right side of the moving plate. The surface of the moving rod is provided with a cleaning brush between the limiting plate and the moving plate. The bottom of the writing board A dust suction device is fixedly connected, support rods are fixedly connected to both sides of the bottom of the writing board, and the bottom end of the support rod is fixedly connected to a base.
所述移动板包括移动板体，所述移动板体上开设有移动槽，所述移动槽内腔的右侧固定连接有移动齿牙，所述移动槽的内腔设置有移动齿轮，所述移动齿轮套设于移动杆上，且移动齿轮与移动齿牙相互啮合。The moving plate includes a moving plate body, and a moving groove is opened on the moving plate body, and the right side of the inner cavity of the moving groove is fixedly connected with moving teeth, and the inner cavity of the moving groove is provided with a moving gear. The moving gear is sheathed on the moving rod, and the moving gear and the moving teeth mesh with each other.
所述吸尘装置包括吸尘外壳，所述吸尘外壳的顶部和底部均固定连接有过滤网板，且两个过滤网板之间设置有转动轴，所述转动轴的表面套设有被动轮，所述转动轴上且位于被动轮的顶部和底部对称设置有吸尘扇，所述吸尘外壳的右侧固定连接有动力箱，所述动力箱内腔的底部固定连接有吸尘电机，所述吸尘电机的输出轴固定连接有主动轮，且主动轮与被动轮通过皮带传动连接，所述动力箱的顶部固定连接有清理按钮，所述吸尘外壳两侧的底部均固定连接有第一卡块，所述吸尘外壳的底部固定连接有装尘盒，所述装尘盒内腔的两侧均固定连接有第二卡块，所述装尘盒分别与第一卡块和第二卡块配合设置，所述清理按钮分别与移动电机和吸尘电机电性连接。The dust suction device includes a dust suction shell, the top and bottom of the dust suction shell are fixedly connected with filter screens, and a rotating shaft is arranged between the two filter screens, and the surface of the rotating shaft is covered with a passive Wheel, on the rotating shaft and located on the top and bottom of the driven wheel, there are symmetrically arranged dust collection fans, the right side of the dust collection shell is fixedly connected with a power box, and the bottom of the inner cavity of the power box is fixedly connected with a dust collection motor , the output shaft of the dust collection motor is fixedly connected with a driving wheel, and the driving wheel and the driven wheel are connected through a belt transmission, the top of the power box is fixedly connected with a cleaning button, and the bottoms on both sides of the dust collection shell are fixedly connected There is a first block, the bottom of the dust collection shell is fixedly connected with a dust box, and both sides of the inner cavity of the dust box are fixedly connected with a second block, and the dust box is respectively connected to the first block. Cooperating with the second clamping block, the cleaning button is electrically connected with the moving motor and the vacuum motor respectively.
优选的，所述限位槽内腔的两侧均固定连接有胶皮带，且胶皮带与移动杆的表面接触。Preferably, rubber belts are fixedly connected to both sides of the cavity of the limiting groove, and the rubber belts are in contact with the surface of the moving rod.
优选的，所述移动杆上且位于移动板的右侧套设有限位环，且限位环的直径大于移动槽的宽度。Preferably, a limiting ring is sleeved on the moving rod and on the right side of the moving plate, and the diameter of the limiting ring is larger than the width of the moving groove.
优选的，所述移动板右侧的底部固定连接有粉笔盒。Preferably, a chalk box is fixedly connected to the bottom of the right side of the moving plate.
(三)有益效果(3) Beneficial effects
本实用新型提供了一种工商管理教学辅助教学板。具备以下有益效果：The utility model provides an auxiliary teaching board for business management teaching. Has the following beneficial effects:
(1)、该工商管理教学辅助教学板，通过移动板和吸尘装置的改良以及移动电机、移动杆和清理刷的配合使用，避免了在使用者清理写字板上的粉笔字时，由于黑板擦使用时间过久而导致的粉笔灰弥漫，优化了使用者的使用环境，方便了使用者的使用，给使用者的身体健康提供保障。(1), the auxiliary teaching board for business administration teaching, through the improvement of the moving board and the dust suction device and the cooperative use of the moving motor, the moving rod and the cleaning brush, it avoids the chalk writing on the writing board being cleaned by the user. The chalk dust caused by wiping for a long time is pervasive, which optimizes the user's use environment, facilitates the use of the user, and provides protection for the user's health.
(2)、该工商管理教学辅助教学板，通过限位板的改良，避免了由于教学板部件老化而导致的移动杆倾斜，延长了教学板的使用寿命，降低成本的同时方便了使用者的使用。(2) The auxiliary teaching board for business administration teaching, through the improvement of the limit board, avoids the tilt of the moving rod caused by the aging of the teaching board components, prolongs the service life of the teaching board, reduces the cost and facilitates the user's use.
附图说明Description of drawings
图1为本实用新型结构示意图；Fig. 1 is the structural representation of the utility model;
图2为本实用新型限位板的结构示意图；Fig. 2 is the structural representation of the utility model limiting plate;
图3为本实用新型移动板的结构示意图；Fig. 3 is the structural representation of the utility model mobile plate;
图4为本实用新型吸尘装置的结构示意图。Fig. 4 is a structural schematic diagram of the dust collection device of the present invention.
图中：1写字板、2限位板、21限位板体、22限位槽、23胶皮带、3移动板、31移动槽、32移动齿轮、33移动齿牙、34移动板体、4电机箱、5移动电机、6移动杆、7清理刷、8吸尘装置、801过滤网板、802吸尘扇、803吸尘外壳、804被动轮、805清理按钮、806主动轮、807转动轴、808吸尘电机、809第一卡块、810动力箱、811第二卡块、812装尘盒、9支撑杆、10底座、11限位环、12粉笔盒。Among the figure: 1 writing board, 2 limit plates, 21 limit plate bodies, 22 limit grooves, 23 rubber belts, 3 moving plates, 31 moving grooves, 32 moving gears, 33 moving teeth, 34 moving plate bodies, 4 Motor box, 5 moving motor, 6 moving rod, 7 cleaning brush, 8 dust suction device, 801 filter screen plate, 802 dust suction fan, 803 dust suction shell, 804 passive wheel, 805 cleaning button, 806 driving wheel, 807 rotating shaft , 808 vacuum motor, 809 first block, 810 power box, 811 second block, 812 dust box, 9 support rod, 10 base, 11 limit ring, 12 chalk box.
具体实施方式detailed description
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
请参阅图1-4，本实用新型提供一种技术方案：一种工商管理教学辅助教学板，包括写字板1，使用者在写字板1上用粉笔书写教学内容，以此进行教学，写字板1的左侧固定连接有限位板2，限位板2用于限定移动杆6的位置，避免移动杆6的倾斜，限位板2包括限位板体21，限位板体21上开设有限位槽22，限位槽22内腔的两侧均固定连接有胶皮带23，且胶皮带23与移动杆6的表面接触，胶皮带23用于固定移动杆6右端的位置，写字板1的右侧固定连接有移动板3，移动板3右侧的底部固定连接有粉笔盒12，粉笔盒12用于存放备用的粉笔，方便了使用者的使用，限位板2的左侧设置有电机箱4，电机箱4的右侧通过转轴活动连接有滑动轮13，且滑动轮13与限位板2的左侧接触，滑动轮13用于减少限位板2与电机箱4间的摩擦力，同时保证移动杆6的水平性，电机箱4内腔的左侧固定连接有移动电机5，移动电机5用于给移动杆6的旋转和移动提供动力，移动电机5的输出轴通过联轴器固定连接有移动杆6，移动杆6上且位于移动板3的右侧套设有限位环11，且限位环11的直径大于移动槽31的宽度，移动杆6的右端依次贯穿限位板2和移动板3并延伸至移动板3的右侧，移动杆6的表面且位于限位板2与移动板3之间套设有清理刷7，清理刷7用于清理写字板1上的粉笔字，写字板1的底部固定连接有吸尘装置8，写字板1底部的两侧均固定连接有支撑杆9，支撑杆9起支撑作用，避免由于写字板1位置过低而给使用者带来的不便，支撑杆9的底端固定连接有底座10。Please refer to Fig. 1-4, the utility model provides a kind of technical solution: a kind of auxiliary teaching board of business administration teaching, comprises writing board 1, the user writes teaching content with chalk on writing board 1, carries out teaching with this, writing board The left side of 1 is fixedly connected to the limit plate 2, and the limit plate 2 is used to limit the position of the moving rod 6 to avoid the inclination of the moving rod 6. The limit plate 2 includes a limit plate body 21, and the limit plate body 21 has a limited Bit groove 22, the both sides of limit groove 22 inner chambers are all fixedly connected with rubber belt 23, and rubber belt 23 contacts with the surface of moving rod 6, and rubber belt 23 is used for fixing the position of moving rod 6 right ends, and the position of writing board 1 The right side is fixedly connected with mobile plate 3, and the bottom of mobile plate 3 right sides is fixedly connected with chalk box 12, and chalk box 12 is used for storing spare chalk, has facilitated the user's use, and the left side of limit plate 2 is provided with electric The right side of the chassis 4 and the motor box 4 is movably connected with a sliding wheel 13 through a rotating shaft, and the sliding wheel 13 is in contact with the left side of the limiting plate 2, and the sliding wheel 13 is used to reduce the friction between the limiting plate 2 and the motor box 4 , while ensuring the horizontality of the moving rod 6, the left side of the inner cavity of the motor box 4 is fixedly connected with a moving motor 5, and the moving motor 5 is used to provide power for the rotation and movement of the moving rod 6, and the output shaft of the moving motor 5 passes through the shaft coupling The device is fixedly connected with a moving rod 6, and the moving rod 6 is provided with a limit ring 11 on the right side of the moving plate 3, and the diameter of the limit ring 11 is greater than the width of the moving groove 31, and the right end of the moving rod 6 runs through the limit in turn. The plate 2 and the moving plate 3 extend to the right side of the moving plate 3, and the surface of the moving rod 6 is provided with a cleaning brush 7 between the limiting plate 2 and the moving plate 3, and the cleaning brush 7 is used to clean the writing board 1. Chalk writing, the bottom of the writing board 1 is fixedly connected with a dust suction device 8, and both sides of the bottom of the writing board 1 are fixedly connected with a support rod 9, and the supporting rod 9 plays a supporting role, so as to avoid the use of the writing board 1 due to its low position. In order to avoid the inconvenience, the bottom end of the support rod 9 is fixedly connected with the base 10 .
移动板3包括移动板体34，移动板体34上开设有移动槽31，移动槽31内腔的右侧固定连接有移动齿牙33，移动槽31的内腔设置有移动齿轮32，移动齿轮32套设于移动杆6上，且移动齿轮32与移动齿牙33相互啮合，在移动齿轮32、移动齿牙33和移动电机5的工作作用下使得移动杆6可以上下移动。The moving plate 3 comprises a moving plate body 34, the moving plate body 34 is provided with a moving groove 31, the right side of the moving groove 31 inner cavity is fixedly connected with a moving tooth 33, and the inner cavity of the moving groove 31 is provided with a moving gear 32, and the moving gear 32 is sleeved on the moving rod 6, and the moving gear 32 is meshed with the moving teeth 33, and the moving rod 6 can move up and down under the action of the moving gear 32, the moving teeth 33 and the moving motor 5.
吸尘装置8包括吸尘外壳803，吸尘外壳803的顶部和底部均固定连接有过滤网板801，且两个过滤网板801之间设置有转动轴807，转动轴807的表面套设有被动轮804，转动轴807上且位于被动轮804的顶部和底部对称设置有吸尘扇802，吸尘扇802用于吸取写字板1在清理时产生的粉笔灰，吸尘外壳803的右侧固定连接有动力箱810，动力箱810内腔的底部固定连接有吸尘电机808，吸尘电机808用于给吸尘扇802的转动提供动力，吸尘电机808的输出轴固定连接有主动轮806，且主动轮806与被动轮804通过皮带传动连接，主动轮806和被动轮804用于将吸尘电机808的动力传送给转动轴807，动力箱810的顶部固定连接有清理按钮805，清理按钮805用于控制移动电机5和吸尘电机808的工作，吸尘外壳803两侧的底部均固定连接有第一卡块809，吸尘外壳803的底部固定连接有装尘盒812，装尘盒812用于存放写字板1在清理时产生的粉笔灰，装尘盒812内腔的两侧均固定连接有第二卡块811，装尘盒812分别与第一卡块809和第二卡块811配合设置，清理按钮805分别与移动电机5和吸尘电机808电性连接。The dust suction device 8 comprises a dust suction housing 803, the top and bottom of the dust suction housing 803 are fixedly connected with a filter screen plate 801, and a rotating shaft 807 is arranged between the two filter screen plates 801, and the surface of the rotating shaft 807 is sleeved with a The driven wheel 804, on the rotating shaft 807 and positioned at the top and bottom of the driven wheel 804, is symmetrically provided with a dust suction fan 802, the dust suction fan 802 is used to suck the chalk dust produced by the tablet 1 during cleaning, on the right side of the dust suction shell 803 The power box 810 is fixedly connected, and the bottom of the inner cavity of the power box 810 is fixedly connected with a dust collection motor 808, which is used to provide power for the rotation of the dust suction fan 802, and the output shaft of the dust collection motor 808 is fixedly connected with a driving wheel 806, and the driving wheel 806 is connected with the driven wheel 804 through a belt drive, the driving wheel 806 and the driven wheel 804 are used to transmit the power of the vacuum motor 808 to the rotating shaft 807, the top of the power box 810 is fixedly connected with a cleaning button 805, and the cleaning button 805 is fixed on the top of the power box 810. The button 805 is used to control the work of the mobile motor 5 and the dust collection motor 808. The bottom of the dust collection housing 803 both sides is fixedly connected with the first block 809, and the bottom of the dust collection housing 803 is fixedly connected with the dust box 812, which is used for dust collection. The box 812 is used to store the chalk dust produced when the tablet 1 is cleaned, and the both sides of the inner chamber of the dust box 812 are fixedly connected with a second block 811, and the dust box 812 is connected with the first block 809 and the second block respectively. The block 811 is cooperatingly arranged, and the cleaning button 805 is electrically connected with the moving motor 5 and the vacuum motor 808 respectively.
当需要对教学板进行清理时，按下清理按钮805，清理按钮805正向接通移动电机5和吸尘电机808的电源，使得移动电机5和吸尘电机808正向转动，吸尘电机808的正向转动使得粉笔灰吸入装尘盒812中，移动电机5的正向转动使得移动杆6正向转动，同时在移动齿轮32和移动齿牙33的配合作用下使得移动杆6向下移动，从而使得清理刷7在向下移动的同时转动，以此进行清理操作，当移动杆6移动到移动槽31的最底部时，清理按钮805控制移动电机5反向转动，从而使得移动杆6向上移动，当移动杆6移动到移动槽31的最顶部时，清理按钮805切断移动电机5和吸尘电机808的电源，以此完成一次清理操作。When the teaching board needs to be cleaned, press the cleaning button 805, and the cleaning button 805 forwardly connects the power supply of the mobile motor 5 and the vacuum motor 808, so that the mobile motor 5 and the vacuum motor 808 rotate forward, and the vacuum motor 808 The forward rotation of the motor 5 makes the chalk dust suck into the dust box 812, and the forward rotation of the moving motor 5 makes the moving rod 6 rotate forward, and at the same time, the moving rod 6 moves downward under the cooperation of the moving gear 32 and the moving teeth 33. , so that the cleaning brush 7 rotates while moving downward, so as to perform the cleaning operation. When the moving rod 6 moves to the bottom of the moving groove 31, the cleaning button 805 controls the moving motor 5 to rotate in reverse, so that the moving rod 6 Moving upwards, when the moving rod 6 moves to the top of the moving groove 31, the cleaning button 805 cuts off the power supply of the moving motor 5 and the vacuum motor 808, thereby completing a cleaning operation.
综上所述，该工商管理教学辅助教学板，通过移动板3和吸尘装置8的改良以及移动电机5、移动杆6和清理刷7的配合使用，避免了在使用者清理写字板1上的粉笔字时，由于黑板擦使用时间过久而导致的粉笔灰弥漫，优化了使用者的使用环境，方便了使用者的使用，给使用者的身体健康提供保障。In summary, the auxiliary teaching board for business administration teaching, through the improvement of the moving board 3 and the dust suction device 8 and the cooperative use of the moving motor 5, the moving rod 6 and the cleaning brush 7, avoids the need for the user to clean the writing board 1. When the blackboard eraser is used for a long time, the chalk dust is diffused, which optimizes the user's use environment, facilitates the use of the user, and provides protection for the user's health.
并且，通过限位板2的改良，避免了由于教学板部件老化而导致的移动杆6倾斜，延长了教学板的使用寿命，降低成本的同时方便了使用者的使用。Moreover, through the improvement of the limiting plate 2, the inclination of the moving rod 6 caused by the aging of the teaching board components is avoided, the service life of the teaching board is prolonged, the cost is reduced, and the use of the user is convenient.
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.
Claims (4)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877314A (en) * | 2018-07-04 | 2018-11-23 | 湖南城市学院 | A kind of culture displaying device of classroom sucking chalk powder |
| CN109130611A (en) * | 2018-09-13 | 2019-01-04 | 安徽倍思特教育科技有限公司 | A kind of primary school education teaching auxiliary device and its operating process |
| CN109130617A (en) * | 2018-10-26 | 2019-01-04 | 安徽信息工程学院 | A kind of automatic-cleaning backboard |
| CN109622449A (en) * | 2018-10-29 | 2019-04-16 | 四川文轩教育科技有限公司 | A kind of interactive projection all-in-one machine |
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2016
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877314A (en) * | 2018-07-04 | 2018-11-23 | 湖南城市学院 | A kind of culture displaying device of classroom sucking chalk powder |
| CN108877314B (en) * | 2018-07-04 | 2020-12-29 | 闫传桂 | A cultural display device that absorbs chalk dust for classrooms |
| CN109130611A (en) * | 2018-09-13 | 2019-01-04 | 安徽倍思特教育科技有限公司 | A kind of primary school education teaching auxiliary device and its operating process |
| CN109130611B (en) * | 2018-09-13 | 2021-03-19 | 安徽倍思特教育科技有限公司 | Primary school education and teaching auxiliary device and operation flow thereof |
| CN109130617A (en) * | 2018-10-26 | 2019-01-04 | 安徽信息工程学院 | A kind of automatic-cleaning backboard |
| CN109622449A (en) * | 2018-10-29 | 2019-04-16 | 四川文轩教育科技有限公司 | A kind of interactive projection all-in-one machine |
| CN109622449B (en) * | 2018-10-29 | 2021-09-07 | 四川文轩教育科技有限公司 | Interactive projection all-in-one machine |
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