CN205364959U - Automatic dust-free blackboard eraser - Google Patents

Abstract

The utility model relates to a teaching aid specifically is automatic dustless blackboard eraser. The blackboard eraser comprises a transmission device and a blackboard eraser fixed on the transmission device, wherein the transmission device is composed of two screw rods, a transmission rod, a base and a motor, the base is installed at the bottom of the blackboard, a left screw rod and a right screw rod are respectively vertically arranged at the left end and the right end of the blackboard and are fixedly installed on the base through screw rod bearing seats, the transmission rod is transversely erected between the tops of the left screw rod and the right screw rod and is connected with the two screw rods through conical teeth, the motor is connected to the tail end of the transmission rod, and the blackboard eraser is arranged between the left screw rod and the right screw rod and is connected to a screw rod. This device can directly design according to original blackboard size, then install on original blackboard can. The automatic erasing of the blackboard and the adsorption and collection of dust are realized. The teaching environment of the teacher is improved, and the physical health of the teacher is protected; saving teaching time and providing teaching efficiency.

Description

Automatic dust-free blackboard eraser

technical field

The utility model relates to a teaching appliance, in particular to an automatic dust-free blackboard eraser.

Background technique

There is a big health problem when teachers use chalk in class, that is, when wiping the blackboard, chalk dust flies all over the sky, and it is easy to breathe into the lungs, affecting health and causing various diseases. Also, after writing on the blackboard, it needs to be erased. And adopt artificial blackboard to wipe the time that can waste class unintentionally. There are also self-wiping blackboards, but this type of blackboard is integral, and the original blackboard needs to be replaced. The whole installation costs a lot. If an automatic blackboard eraser for dust removal can be added on the basis of the original blackboard, it can not only reduce the health threat of chalk dust to the teacher, but also save the time for wiping the blackboard, and the teacher's teaching efficiency can be improved.

Contents of the invention

Aiming at the problems existing in the original blackboard, a blackboard eraser that can be automatically erased and dust-removed is designed.

The technical scheme of the utility model is: an automatic dust-free blackboard eraser, including a transmission device and a blackboard eraser fixed on the transmission device. The transmission device is composed of two screw rods, a transmission rod, a base and a motor, and the base is installed on the blackboard. The bottom of the bottom of the blackboard, the left screw rod and the right screw rod are erected at the left and right ends of the blackboard respectively, and are fixedly installed on the base through the screw bearing seat, and the transmission rod is erected horizontally between the top of the left screw rod and the right screw rod. The transmission rod is connected with two screw rods through tapered teeth, the motor is connected to the end of the transmission rod, and the blackboard eraser is arranged between the left screw rod and the right screw rod, and connected on the screw nut. The blackboard eraser is composed of a bottom cover, a panel and a brush. The panel is fastened with the bottom cover to form a volume space. The panel is provided with a plurality of dust suction fans, and the position corresponding to each dust suction fan on the panel is There is an ash inlet, and the brush is connected to the panel by a spring.

Start the motor, the transmission rod rotates, and drives the screw rods at both ends to rotate, and the blackboard eraser is driven by the screw nut to move up and down on the surface of the blackboard according to the direction of rotation of the screw rod, so as to achieve the purpose of erasing the blackboard. At the same time, the dust suction fan in the blackboard eraser is running to suck the dust into the bottom cover for storage. After the dust is full, it can be removed and cleaned manually.

The device can be designed directly according to the size of the original blackboard, and then installed on the original blackboard. There is no need to dismantle the original blackboard, reducing the cost of blackboard renovation. Realize the automatic erasing of the blackboard, the adsorption and collection of dust. Improve the teaching environment of teachers, protect the health of teachers; save teaching time and improve teaching efficiency.

Description of drawings

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

Fig. 2 is a schematic diagram of the connecting joint between the transmission rod and the screw rod.

Fig. 3 is a schematic diagram of the structure of the blackboard eraser.

Reference numerals in the figure, left screw mandrel 1, right screw mandrel 2, transmission rod 3, base 4, motor 5, blackboard eraser 6, blackboard 9, left screw mandrel bearing seat 11, left screw mandrel nut 12, right screw mandrel bearing Seat 21, right screw nut 22, conical tooth 31, bottom cover 61, panel 62, hairbrush 63, suction fan 64, spring 65, ash inlet 622.

detailed description

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described. The specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Embodiment: As shown in Figure 1, the automatic dust-free blackboard eraser is made of a transmission device and a blackboard eraser fixed on the transmission device. The transmission device is composed of a base 4, two screw rods, and a transmission rod 3 to form a transmission bracket, and a motor 5 is connected to the transmission rod as a drive.

First base 4 is installed, and base 4 is horizontally arranged along the bottom of blackboard 9, and left screw mandrel 1, right screw mandrel 2 are respectively positioned at the left and right two ends of blackboard 9, and vertically arranges. The left screw mandrel 1 and the right screw mandrel 2 are fixedly installed on the base 4 by the left screw mandrel bearing seat 11 and the right screw mandrel bearing seat 21 respectively. The transmission rod 3 is erected horizontally between the tops of the left screw mandrel 1 and the right screw mandrel 2, and the transmission rod 3 is connected with the left screw mandrel and the right screw mandrel through conical teeth 31, as shown in Figure 2, the moving rod 3 and the screw mandrel One conical tooth 31 is respectively fixed at the joint, and the two conical teeth are meshed and connected with each other. The motor 5 is connected to the end of the transmission rod 3 as a power output. Described blackboard eraser 6 is arranged between left screw mandrel 1 and right screw mandrel 2, is connected on the left screw mandrel nut 12 and the right screw mandrel nut 22.

As shown in FIG. 3 , the blackboard eraser 6 is composed of a bottom cover 61 , a panel 62 and a brush 63 , and the panel 62 is fastened with the bottom cover to form a volume space. A plurality of dust suction fans 64 are arranged on the panel 62 , and a dust inlet 622 is arranged at a position corresponding to each dust suction fan on the panel 62 , and the brush 63 is connected to the panel 62 by a spring 65 .

Automatic dust-free blackboard eraser, the length and width can be adjusted according to the size of the existing blackboard, with strong adaptability. It is used to upgrade the existing blackboard without dismantling, it is simple and convenient, and the cost is low.

To sum up, the above is a preferred embodiment of the utility model, and all changes made according to the technical solution of the utility model, and the produced functional effects do not exceed the scope of the technical solution of the utility model, all belong to the protection scope of the utility model.

Claims (1)

1. automatic dust-free blackboard eraser, it is characterized in that, including actuating device and the blackboard eraser being fixed on actuating device, described actuating device is by two rhizoid bars, drive link (3), base (4) and motor (5) are constituted, base (4) is arranged on the bottom of blackboard, left screw mandrel (1), the left side being arranged on blackboard erect respectively by right screw mandrel (2), right two ends, it is fixedly mounted on base (4) each through screw mandrel shaft block, drive link (3) transverse strands is located between left screw mandrel (1) and right screw mandrel (2) top, drive link (3) is connected by conical tooth and two rhizoid bars, motor (5) is connected to the end of drive link (3), described blackboard eraser (6) is arranged between left screw mandrel (1) and right screw mandrel (2), it is connected on feed screw nut；Described blackboard eraser (6), it is made up of bottom (61), panel (62) and hairbrush (63), panel (62) fastens with bottom, constitute a volume space, panel (62) is provided with several dust absorption fans (64), the upper position corresponding to each dust absorption fan of panel (62) is provided with ash inlet (622), and hairbrush (63) is connected on panel (62) by spring (65).