CN204547468U - Self-erasing blackboard - Google Patents

Abstract

The utility model designs a self-erasing blackboard, the main body is a blackboard, and also includes a slide rail A, a slide rail B, a walking track, a stepping motor, a self-erasing device and a power switch, and the slide rail A is fixedly arranged on the edge of the blackboard. The slide rail B is fixedly set on the lower edge of the blackboard, and the running track is vertically set between the slide rail A and the slide rail B. There are stepping motors at both ends of the walking track, and the stepping motor is connected with the slide rail A and the slide rail B, and the walking A self-wiping device is provided inside the track, and the self-wiping device slides up and down along the running track. The stepping motor, self-wiping device and power switch are connected to each other through wires, and the power switch is arranged at any position on the side of the blackboard. The automatic wiping of the blackboard is realized without external force support, and the degree of automation is high, which greatly reduces the damage to the physical and mental health of users.

Description

A self-erasing blackboard

technical field

The utility model relates to teaching tools, in particular to a self-wiping blackboard.

Background technique

The blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be written repeatedly. The board surface is hard and is mostly used for teaching. Made of wood or frosted glass, etc., you can write on it with specific writing materials such as chalk. Mostly black, dark green, white. In ancient Chinese teaching, an object called a sand table was often used, and hardwood was used to repeatedly write on the sand, but because of the softness of the sand, it cannot be regarded as a blackboard.

In the Middle Ages, people discovered that lime was mixed with water to make blocks, and they used a method similar to charcoal pens to write on the surface of dark, hard objects. In the 19th century, people used black lacquer to coat the surface of wooden boards to protect them from erosion. Of course, the main function of the blackboard at that time was not teaching, and it was not until the middle of the 19th century that it became popular in schools all over the world.

For more than two hundred years, blackboards have been painted on the surface of hard objects such as wood boards and cement with black paint at the earliest, to water-ground glass, color-coated steel plates, and composite material boards in the 1990s. Witnessed the world's education step by step Development has made great contributions to spreading knowledge and popularizing education for mankind. Now the types of blackboards have also become complex and diverse. From the color, there are blackboards, green boards, and white boards. From the surface shape, there are flat panels and arc panels. From the structural composition, there are bracket movable panels and push-pull panels. , lifting board, magnetic blackboard, from the use of divided into teaching blackboard, office whiteboard, advertising board, display board.. and the teaching blackboard has electronic blackboard, multi-functional combination board, combination push-pull blackboard, interactive electronic whiteboard, with screen projection board and so on.

The traditional blackboard and chalk are used together to achieve the purpose of teaching, but when the blackboard is erased, a large amount of dust has caused great harm to the physical and mental health of users, especially the majority of teachers, due to long-term exposure to such dust It is very easy to cause lung diseases.

Utility model content

In order to solve the above problems, the utility model provides a technical solution capable of wiping the blackboard independently without external force support:

A self-erasing blackboard, the main body is a blackboard, and also includes a slide rail A, a slide rail B, a walking track, a stepping motor, a self-erasing device and a power switch, the slide rail A is fixed on the edge of the blackboard, and the slide rail B is fixed on the edge On the lower edge of the blackboard, the running track is vertically set between the slide rail A and the slide rail B. Stepping motors are provided at both ends of the running track. Wiping equipment, self-wiping equipment slides up and down along the running track, the stepper motor, self-wiping equipment and power switch are connected to each other through wires, and the power switch is arranged at any position on the side of the blackboard.

Further, the structure of the self-wiping device is: including a housing, a rotating motor, a circular wiping board, a servo motor, a PLC control box and a position sensor, the housing is provided with a rotating motor and a PLC control box, the rotating motor is arranged at the bottom of the housing, and The rotating shaft protrudes from the surface of the shell and is fixedly connected with the circular wiper. The top of the shell is equipped with a servo motor, which is connected with the running track through the servo motor and moves up and down along the direction of the running track. Position sensors are fixed on the upper and lower sides of the servo motor. The motor, the servo motor and the position sensor are all connected to the PLC control box through wires, and the PLC control box is connected to the power switch.

Further, it also includes a wireless start button, the wireless start button is connected with the wireless signal generator in a wireless signal transmission mode, the wireless signal generator is arranged inside the power switch, and is connected to the power switch through a wire.

The beneficial effects of the utility model are:

(1) The utility model realizes the autonomous wiping of the blackboard through the cooperation of slide rail A, slide rail B, walking track, stepping motor, self-wiping equipment and power switch, without external force support, and has a high degree of automation and a large Reduce the damage to the physical and mental health of users.

(2) In the utility model, the self-wiping equipment is equipped with a rotating motor and a servo motor to ensure that the equipment is driven by the rotating motor to wipe the blackboard with a circular wiping board, and the purpose of wiping is realized by moving the servo motor up and down on the walking track. Its structure is simple, and it is convenient to realize.

(3) The utility model also includes a wireless start button, and the user can control the device from a certain distance, greatly increasing the performance of the device.

Description of drawings

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

Fig. 2 is a schematic diagram of the structure of the self-wiping device;

Figure 3 is a schematic diagram of the connection of the wireless start button.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the main body of the self-erasing blackboard is a blackboard 1, which also includes a slide rail A2, a slide rail B3, a walking track 4, a stepping motor 5, a self-erasing device 6 and a power switch 7, and the slide rail A2 is fixed on the blackboard 1 upper edge, the slide rail B3 is fixedly arranged on the lower edge of the blackboard 1, the running track 4 is vertically arranged between the slide rail A2 and the slide rail B3, the two ends of the walking track 4 are provided with a stepping motor 5, and the stepping motor 5 and the slide rail A2, slide rail B3 is matched and connected, the inside of the walking track 5 is provided with a self-wiping device 6, and the self-wiping device 6 slides up and down along the walking track 5, the stepper motor 5, the self-wiping device 6 and the power switch 7 are connected to each other through wires, and the power switch 7 is arranged at any position on the side of the blackboard 1. The automatic wiping of the blackboard 1 is realized without external force support, and the degree of automation is high, which greatly reduces the damage to the physical and mental health of users.

As shown in Figure 2, the structure of the self-wiping device 6 is: comprising a housing 6a, a rotating motor 6b, a circular wiping plate 6c, a servo motor 6d, a PLC control box 6e and a position sensor 6f, and the housing 6a is internally provided with a rotating motor 6b and a PLC. The control box 6e and the rotating motor 6b are arranged at the bottom of the casing 6a, the rotating shaft of the rotating motor 6b protrudes from the surface of the casing 6a and is fixedly connected with the circular wiping plate 6c, the top of the casing 6a is provided with a servo motor 6d, and the servo motor 6d cooperates with the running track 4 Connect and move up and down along the direction of the walking track 4, the upper and lower sides of the servo motor 6d are fixed with a position sensor 6f, the rotating motor 6b, the servo motor 6d and the position sensor 6f are all connected to the PLC control box 6e through wires, and the PLC control box 6e is connected to the power switch 7 conduction. Ensure that the equipment is driven by the rotary motor 6b to wipe the blackboard 1 with the circular wiper 6c, and the servomotor 6d moves up and down on the running track 4 to realize the purpose of wiping. The structure is simple and convenient.

In addition, as shown in Figure 3, it also includes a wireless start button 8, the wireless start button 8 is connected with a wireless signal generator 9 in a wireless signal transmission mode, and the wireless signal generator 9 is arranged inside the power switch 7, and is connected to the power switch 7 through a wire. Conduction, the user can control the device from a certain distance, greatly increasing the performance of the device.

The above-described embodiments are only preferred embodiments of the present utility model, and are not limitations to the technical solutions of the present utility model. As long as the technical solutions that can be realized on the basis of the above-mentioned embodiments without creative work, all should be regarded as falling into the scope of this invention. within the protection scope of utility model patents.

Claims (3)

1. A self-erasing blackboard, the main body is a blackboard, characterized in that: it also includes a slide rail A, a slide rail B, a walking track, a stepping motor, self-erasing equipment and a power switch, and the slide rail A is fixedly arranged on the blackboard The upper edge and slide rail B are fixed on the lower edge of the blackboard, and the running track is vertically set between slide rail A and slide rail B. There are stepping motors at both ends of the walking track, and the stepping motor cooperates with slide rail A and slide rail B. Connected, there is a self-wiping device inside the walking track, and the self-wiping device slides up and down along the walking track; The stepper motor, self-wiping device and power switch are connected to each other through wires, and the power switch is set at any position on the side of the blackboard. 2. A kind of self-erasing blackboard according to claim 1, characterized in that: the structure of the self-erasing device is: comprising a shell, a rotating motor, a circular erasing board, a servo motor, a PLC control box and a position sensor, the There is a rotating motor and a PLC control box inside the casing. The rotating motor is set at the bottom of the casing. The rotating shaft of the rotating motor protrudes from the surface of the casing and is fixedly connected with the circular wiper. The top of the casing is equipped with a servo motor, which is connected to the walking track through the servo motor and Move up and down along the direction of the walking track, and position sensors are fixed on the upper and lower sides of the servo motor; The rotating motor, servo motor and position sensor are all connected to the PLC control box through wires, and the PLC control box is connected to the power switch. 3. A self-erasing blackboard according to claim 1, characterized in that: it also includes a wireless start button, and the wireless start button is connected with a wireless signal generator in a wireless signal transmission mode, and the wireless signal generator is arranged on the The inside of the power switch is connected to the power switch through a wire.