Multipurpose blackboard eraser

Abstract

The invention discloses a multi-purpose blackboard eraser which consists of a blackboard eraser body (1), a connecting tube (2) and a handle (3); the blackboard eraser body (1) is a hollow cubic structure; the surrounding side wall of the blackboard eraser body (1) is provided with a water outlet (5); the bottom of the blackboard eraser body (1) is connected and communicated with the upper part of the connecting tube (2), the lower part of which is connected with the handle (3); a water inlet (4) is arranged at the position at the lower part of the connecting tube (2) and near the handle (3); the surrounding side wall of the blackboard eraser body (1) is respectively provided with two neighboring groups of brown hair (6) and hair felts (7). As the two groups of brown hair (6) and hair felts (7) are arranged on the surrounding side wall of the blackboard eraser body (1), the service life of the blackboard eraser is prolonged; as the water outlet (5) and the water inlet (4) are arranged, the multi-purpose blackboard eraser can be cleaned thoroughly after being used for a period of time. The multi-purpose blackboard eraser of the invention has simple structure and easy operation.

Description

technical field [0001] The invention relates to a teaching tool, in particular to a multipurpose blackboard eraser. Background technique [0002] At present, the commonly used blackboard eraser is to stick brown hair on one side of the wooden block. When in use, hold the wooden block and let the side with the brown hair rub back and forth on the blackboard to wipe off the chalk words on the blackboard. Holding the blackboard eraser body, the chalk powder wiped off when wiping the blackboard will float on the user's head and body, and even enter the user's oral cavity with breathing, which is very unhygienic. In addition, the brown hair is only stuck to one side of the blackboard eraser body, and the brown hair will fall off after a long time of use, and a new blackboard eraser must be replaced, resulting in waste. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multipurpose blackboard e...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used blackboard eraser is to stick brown hair on one side of the wooden block. When in use, hold the wooden block and let the side with the brown hair rub back and forth on the blackboard to wipe off the chalk words on the blackboard. Holding the blackboard eraser body, the chalk powder wiped off when wiping the blackboard will fall on the user's head and body, and even enter the user's mouth with breathing, which is very unhygienic

In addition, the brown hair is only stuck to one side of the blackboard eraser body, and the brown hair will fall off after a long time of use, and a new blackboard eraser must be replaced, resulting in waste

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