CN202399745U - Novel blackboard without manual erasing - Google Patents

Abstract

The utility model discloses a novel erasable blackboard, which comprises a first board (1) and a second board (2) which can move up and down. The first board (1) is located in front of the second board (2). A first brush (3) is provided in the middle of the plate (1) and the second plate (2), the first brush (3) is located in front of the first plate (1), and the two ends are fixed on the wall, A second hair brush (4) is arranged on the bottom of the first board (1), and the hair brush head of the second hair brush (4) faces the back direction of the first board (1). The utility model arranges the first brush in front of the first plate, so that the first brush can clean the chalk characters on the first plate when the first plate moves up and down; the second brush at the bottom of the first plate The hairbrush can clean the chalk characters on the second board. In addition, the first hairbrush and the second hairbrush are equipped with a brush head swing or rotation control switch, which further ensures the effect of wiping the blackboard.

Description

New free erase blackboard

technical field

The utility model relates to a teaching tool: a blackboard, in particular to an erasable blackboard.

Background technique

The blackboard is an important teaching tool, and a large part of the content of the teacher's lecture is delivered to the students by relying on the blackboard. In order to improve the efficiency of lectures, many schools have two blackboards. When one is full, just push the full blackboard upwards, and the blank blackboard that was originally at the top will move down accordingly, making it easier for the teacher to continue teaching. . However, for many teachers and courses, two blackboards are still not enough. At this time, it is necessary to wipe the blackboard full of words before continuing to teach. At present, a blackboard eraser is used to manually wipe the blackboard, which is time-consuming and laborious.

Utility model content

The technical problem to be solved by the utility model is to provide a novel erasable blackboard, which can erase the chalk characters on the blackboard while pulling the blackboard. No need to manually wipe the blackboard anymore.

In order to solve the above technical problems, the structure of the utility model includes a first plate and a second plate that can move up and down, the first plate is located in front of the second plate, and a second plate is arranged in the middle of the first plate and the second plate. One hair brush, the first hair brush is located in front of the first board, the two ends of the first hair brush are fixed on the wall, the second hair brush is arranged on the bottom of the first board, and the third hair brush is arranged on the top of the first board The hair brushes, the hair brush heads of the second hair brush and the third hair brush all face the back direction of the first plate.

Both the first hair brush and the second hair brush are equipped with a brush head swing or rotation control switch, which can wipe the blackboard cleaner after being turned on.

The utility model arranges the first brush in front of the first board, so that the first brush can clean the chalk characters on the first board when the first board moves up and down; The second hairbrush is set, because when the first board moves up and down, the second board also moves up and down, and the direction of motion is opposite, so the second hairbrush can clean the chalk characters on the second board. The setting of the third hairbrush can make the second plate wipe cleaner. In addition, the first hairbrush and the second hairbrush are equipped with a brush head swing or rotation control switch, which further ensures the effect of wiping the blackboard. The utility model has a simple structure and is favorable for popularization and application.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

Embodiment of the present utility model: as shown in Figure 1, the structure of the present utility model comprises the first plate 1 and the second plate 2 that can move up and down, the first plate 1 is positioned at the place ahead of the second plate 2, and the first plate 1 There is a first brush 3 in the middle of the second plate 2, the first brush 3 is located in front of the first plate 1, both ends are fixed on the wall, and the bottom of the first plate 1 is provided with a second brush. The brush 4 is provided with a third hair brush 5 on the top of the first board 1 , and the brush heads of the second hair brush 4 and the third hair brush 5 are all facing the back side of the first board 1 . The first hairbrush 3 and the second hairbrush 4 are equipped with a brush head swing or rotation control switch.

When two blackboards are all filled with chalk, push up or pull down the first board 1, the brush head of the first hair brush 3 will wipe the whole first board 1, thereby the chalk on the first board 1 At the same time, the second plate 2 moves in the opposite direction to the first plate 1, and the brush head of the second brush 4 at the bottom of the first plate 1 wipes the entire second plate 2, and the second plate 2. Wipe off the chalk writing on 2. The third hairbrush 5 will also wipe the second board 2, so that the second board 2 can be wiped cleaner. Before moving the first board 1, also can open the control switch of the first hairbrush 3 and the second hairbrush 4, make their hairbrush heads swing or rotate, further guarantee the effect of wiping the blackboard.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the utility model.

Claims (2)

1. novel Wiping-free blackboard; Comprise first plate moving up and down (1) and second plate (2); First plate (1) is positioned at the place ahead of second plate (2), it is characterized in that: be provided with first hairbrush (3) at first plate (1) and the residing centre position of second plate (2), first hairbrush (3) is positioned at the place ahead of first plate (1); The two ends of first hairbrush (3) are fixing on the wall; Be provided with second hairbrush (4) in the bottom of first plate (1), be provided with the 3rd hairbrush (5) at the top of first plate (1), the brush head of second hairbrush (4) and the 3rd hairbrush (5) is all towards the back side direction of first plate (1).

2. novel Wiping-free blackboard according to claim 1 is characterized in that: described first hairbrush (3) and second hairbrush (4) all are furnished with brush head swing or rotary control switch.