阅读说明：本技术 一种可快速擦拭的黑板 (Blackboard capable of being quickly wiped ) 是由 陈克勇 龙和安 谢鹏 于 2021-09-15 设计创作，主要内容包括：一种可快速擦拭的黑板,包括黑板本体,所述黑板本体为环形带状结构,所述黑板本体的上部与第一转动机构连接,所述黑板本体的下部与第二转动机构连接,所述第一转动机构包括相互啮合的第一转动轮和第一转动轴,所述第二转动机构包括相互啮合的第二转动轮和第二转动轴,所述黑板本体安装在第一转动轮和第二转动轮的表面,所述第一转动轮的直径小于第二转动轮的直径,所述黑板本体的背面上部设有擦板,所述擦板的宽度大于黑板本体的宽度,所述擦板的无毛面通过弹簧机构固定在墙体上,所述擦板的带毛面与黑板本体相接触。本发明中的被擦除完字迹的黑板继续转动至正面后,便可以继续进行书写。(The utility model provides a blackboard that can clean fast, includes the blackboard body, the blackboard body is annular band structure, the upper portion and the first rotation axis of blackboard body are connected, the lower part and the second rotation axis of blackboard body are connected, first rotation axis includes intermeshing's first rotation wheel and first axis of rotation, second rotation axis includes intermeshing's second rotation wheel and second axis of rotation, the blackboard body is installed on first rotation wheel and second rotation wheel's surface, the diameter of first rotation wheel is less than the diameter that the second rotated the wheel, the back upper portion of blackboard body is equipped with the board of wiping, the width of wiping the board is greater than the width of blackboard body, the hairless face of wiping the board passes through spring mechanism to be fixed on the wall body, the hairless face of wiping the board contacts with the blackboard body. The blackboard with the erased writing can continue to write after continuing to rotate to the front.)

1. The utility model provides a blackboard that can wipe fast, includes blackboard body, its characterized in that: the blackboard body is the annular band structure, the upper portion and the first rotation mechanism of blackboard body are connected, the lower part and the second rotation mechanism of blackboard body are connected, first rotation mechanism includes intermeshing's first rotation wheel and first axis of rotation, second rotation mechanism includes intermeshing's second rotation wheel and second axis of rotation, the blackboard body is installed on the surface that first rotation wheel and second rotated the wheel, the diameter of first rotation wheel is less than the diameter that the second rotated the wheel, the back upper portion of blackboard body is equipped with the board of wiping, the width of wiping the board is greater than the width of blackboard body, the no hair face of wiping the board passes through spring mechanism and fixes on the wall body, the area hair face of wiping the board contacts with the blackboard body.

2. A blackboard capable of being erased quickly according to claim 1, characterised in that: the central axes of the first rotating wheel and the second rotating wheel are not on the same straight line.

3. A blackboard capable of being erased quickly according to claim 1 or 2, characterised in that: the spring mechanism comprises a limiting plate and a spring, the limiting plate is connected with the wiping plate, one end of the spring is fixed on the limiting plate, and the other end of the spring is fixed on the wall.

4. A blackboard capable of being erased quickly according to claim 1 or 2, characterised in that: the first rotating shaft and the second rotating shaft are connected with the driving motor, a switch is arranged on the wall body on one side of the blackboard body, and the switch is electrically connected with the driving motor.

5. A blackboard capable of being erased quickly according to claim 3, characterised in that: the first rotating shaft and the second rotating shaft are connected with the driving motor, a switch is arranged on the wall body on one side of the blackboard body, and the switch is electrically connected with the driving motor.

6. A blackboard capable of being quickly erased according to any one of claims 1 to 5, characterised in that: the front of the blackboard body is perpendicular to the ground, and the back of the blackboard body is provided with an inclination angle.

Technical Field

The invention relates to a teaching aid, in particular to a blackboard capable of being quickly wiped.

Background

The blackboard is an important teaching tool, although the current multimedia teaching is widely applied, in the practical teaching practice, no matter a primary and secondary school teacher or a university professor, the traditional teaching mode is still the main mode, and in the traditional teaching mode, a teacher generally writes teaching contents on the blackboard, and the teacher needs to continuously write on the blackboard and then continuously manually erase the teaching contents, so that the classroom time is wasted in the manual erasing process.

CN201520022814.5 discloses a blackboard capable of automatically removing handwriting, which comprises a sheet frame and a sheet body fixed in the sheet frame, wherein slide bars parallel to the horizontal plane are fixed above and below the sheet frame, an erasing plate capable of swinging left and right along the slide bars is arranged between the two slide bars, a motor is fixed on the erasing plate, a driving shaft is arranged on the motor, a driving gear is fixed on the driving shaft, a plurality of rotating shafts perpendicular to the erasing plate are arranged on the erasing plate along the length direction, a transmission gear is fixed at the top of the rotating shafts, a brush is fixed at the bottom of the rotating shafts, the bottom of the brush is attached to the sheet body, a cylinder is fixed at one side of the sheet frame, a mandril is arranged on the cylinder, and the top end of the mandril is fixedly connected with the erasing plate, this patent uses cylinder power to realize promoting to erase the pole, makes the device volume increase, has certain clearance between brush and the brush in addition, probably makes to erase unclean.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a blackboard which has better erasing effect and can be quickly erased.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a blackboard that can clean fast, includes the blackboard body, the blackboard body is annular band structure, the upper portion and the first rotation axis of blackboard body are connected, the lower part and the second rotation axis of blackboard body are connected, first rotation axis includes intermeshing's first rotation wheel and first axis of rotation, second rotation axis includes intermeshing's second rotation wheel and second axis of rotation, the blackboard body is installed on first rotation wheel and second rotation wheel's surface, the diameter of first rotation wheel is less than the diameter that the second rotated the wheel, the back upper portion of blackboard body is equipped with the board of wiping, the width of wiping the board is greater than the width of blackboard body, the hairless face of wiping the board passes through spring mechanism to be fixed on the wall body, the hairless face of wiping the board contacts with the blackboard body.

Further, the central axes of the first rotating wheel and the second rotating wheel are not on the same straight line.

Further, the spring mechanism comprises a limiting plate and a spring, the limiting plate is connected with the wiping plate, one end of the spring is fixed on the limiting plate, and the other end of the spring is fixed on the wall.

Further, the first rotating shaft and the second rotating shaft are connected with a driving motor, a switch is arranged on a wall body on one side of the blackboard body, and the switch is electrically connected with the driving motor.

Further, the front of the blackboard body is perpendicular to the ground, and the back of the blackboard body is provided with an inclination angle.

The diameter of the second rotating wheel is larger than that of the first rotating wheel, so that the blackboard body is driven by the rotating shaft, when the blackboard body on the back rotates from bottom to top, the blackboard body at the second rotating wheel moves towards the first rotating wheel, the rotating wheel is narrowed, the blackboard body can be tensioned, the blackboard body at the first rotating wheel can tightly abut against the erasing plate, and the handwriting on the blackboard can be erased by utilizing larger friction force between the erasing plate and the blackboard body. The blackboard after erasing the writing can continue to write after continuing to rotate to the front.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view showing the rotation principle of the blackboard body in the embodiment shown in FIG. 1.

In the figure: 1. blackboard body, 2, first runner, 3, first axis of rotation, 4, second runner, 5, second axis of rotation, 6, wipe the board, 7, spring, 8, limiting plate.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-2, the present embodiment includes a blackboard body 1, the blackboard body 1 is a ring belt-shaped structure, the upper part of the blackboard body 1 is connected with a first rotating mechanism, the lower part of the blackboard body is connected with a second rotating mechanism, the first rotating mechanism comprises a first rotating wheel 2 and a first rotating shaft 3 which are meshed with each other, the second rotating mechanism comprises a second rotating wheel 4 and a second rotating shaft 5 which are meshed with each other, the blackboard body 1 is arranged on the surfaces of a first rotating wheel 2 and a second rotating wheel 4, the diameter of the first rotating wheel 2 is smaller than that of the second rotating wheel 4, the upper part of the back of the blackboard body 1 is provided with a wiping plate 6, the width of the wiping plate 6 is larger than that of the blackboard body 1, the hairless surface of the erasing plate 6 is fixed on a wall body through a spring mechanism, and the hairless surface of the erasing plate 6 is in contact with the blackboard body 1.

In this embodiment, the central axes of the first rotating wheel 2 and the second rotating wheel 4 are not on the same straight line. Thus, the front surface of the blackboard body 1 is made vertical, and the back surface is made to have an inclination angle.

In this embodiment, spring mechanism includes limiting plate 8 and spring 7, limiting plate 8 is connected with wiping board 6, spring 7's one end is fixed on limiting plate 8, and its other end is fixed on the wall. When the erasing plate 6 is extruded, the spring 7 is compressed, so that the handwriting can be erased by utilizing the friction force between the erasing plate 6 and the blackboard body 1, and the overlarge friction force between the erasing plate 6 and the blackboard body 1 can be avoided.

In this embodiment, the first rotating shaft 3 and the second rotating shaft 5 are connected to a driving motor, a switch is disposed on a wall on one side of the blackboard body 1, and the switch is electrically connected to the driving motor. Under the drive of a driving motor, the first rotating shaft 3 and the second rotating shaft 5 are driven to rotate, the first rotating shaft 3 drives the first rotating wheel 2 to rotate, and the second rotating shaft 5 and the second rotating wheel 4 rotate, so that the edge of the blackboard body 1 with the handwriting can be gradually rotated to be in contact with the erasing plate 6, and the blackboard body is erased by the erasing plate 6 and then becomes a clean blackboard surface.

In this embodiment, the front surface of the blackboard body 1 is perpendicular to the ground, and the back surface of the blackboard body 1 has an inclination angle. When the blackboard body 1 at the second rotating wheel 4 moves to the first rotating wheel 2, the blackboard body 1 is tensioned due to the narrowing of the rotating wheels, the blackboard body 1 at the first rotating wheel 2 tightly props against the erasing plate 6, and the handwriting on the blackboard is erased by utilizing the larger friction force between the erasing plate 6 and the blackboard body.

The working process of the invention is as follows: the blackboard eraser comprises a blackboard body 1, a first rotating wheel 2, a second rotating wheel 4, a blackboard body 1, a blackboard eraser plate 6, a switch and a driving motor, wherein the first rotating shaft 3 and the second rotating shaft 5 are driven to rotate under the driving of the driving motor, the first rotating shaft 3 drives the first rotating wheel 2 to rotate, the second rotating shaft 5 and the second rotating wheel 4 rotate, the diameter of the second rotating wheel 4 is larger than that of the first rotating wheel 2, when the blackboard body 1 on the back rotates from bottom to top, the blackboard body 1 at the second rotating wheel 4 moves towards the first rotating wheel 2, the blackboard body 1 can be tensioned due to the narrowing of the rotating wheels, the blackboard body 1 at the first rotating wheel 2 can tightly abut against the eraser plate 6, and the characters on the blackboard can be erased by utilizing larger friction force between the eraser plate 6 and the blackboard body. The blackboard after erasing the writing can continue to write after continuing to rotate to the front.

Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.