CN201186568Y - Hand-protective blackboard eraser - Google Patents

Abstract

The utility model relates to a blackboard eraser capable of protecting hands, which suits blackboards in classrooms of schools or some office rooms. In order to improve the prior common blackboard eraser to provide convenience for users when in use and particularly not to contaminate the hands, the blackboard eraser is characterized in that a circular concave extension part is added on the common blackboard eraser, wherein the recess size of the extension allows fingers to be accommodated, and the thickness of the extension is identical to that of the original bottom plate of the blackboard eraser. When in use, the fingers are arranged in the recess of the extension to grasp the eraser, so that the eraser can effectively prevent the fingers from being contaminated by the chalk powder, thereby protecting the hands. The blackboard eraser has the advantages of low production cost and obvious effect, and is worthy of popularization.

Description

The handguard blackboard eraser

Affiliated technical field

The utility model relates to a kind of blackboard eraser that can protect hand, is applicable in the classroom or the blackboard adapted of some office space.

Background technology

The use of blackboard and blackboard eraser is very general in the school, because many people consider the dust problem in the blackboard eraser use, many new blackboard erasers have dust-absorbing function now, but often have a thick long suction pipe, not very convenient during use, so common blackboard eraser is still preferred in the classroom when really using, seem light and handy convenient.But common blackboard eraser has a fatal shortcoming, is exactly that chalk dust sheds too much, not only sucks nose but also the user's that makes dirty hand.Many students have wiped blackboard and will go to wash one's hands the time on duty for the day, feel also inconvenient.

Summary of the invention

Make the user convenient in the process of using in order to improve existing common blackboard eraser; especially be unlikely to the hand of oneself of making dirty; the utility model adopts the blackboard eraser extension to add the handguard surrounding edge, allows user's hand be protected when erasing the board, and solves the above problems preferably.

The concrete technical scheme of the utility model is: on common blackboard eraser, increase the epitaxial part of a circle indent.The indent size of extension is as the criterion can put into finger, and the thickness of extension is identical with the original base plate thickness of blackboard eraser.The user when in use, finger is put into the recess of extension, catches blackboard eraser, just can effectively prevent the chalk dust finger part of making dirty when erasing the board, and plays the effect of protecting hand.

Great advantage of the present utility model is exactly to add the epitaxial part of indent around blackboard eraser, to make the use hommization more of blackboard eraser, to use also convenient.Production cost of the present utility model is low, and effect is obvious, is worthy to be popularized.

Description of drawings

Below in conjunction with accompanying drawing and concrete experimental procedure the utility model is further specified.

Figure is an embodiment principle schematic of the present utility model.

1. blackboard erasers among the figure, 2. extension, 3. in recess, 4. base plate

The specific embodiment

On common blackboard eraser (1), increase extension (2) part of a circle indent.Interior recess (3) size of extension (2) is as the criterion can put into finger, and the thickness of extension (2) is identical with the original base plate of blackboard eraser (4) thickness.

The user when in use, finger is put into the recess (3) of extension (2), catches blackboard eraser, just can effectively prevent the chalk dust finger part of making dirty when erasing the board, and plays the effect of protecting hand.

Claims (1)

1, a kind of handguard blackboard eraser is characterized in that: on common blackboard eraser, increase the epitaxial part of a circle indent, the indent size of extension is as the criterion can put into finger, and the thickness of extension is identical with the original base plate thickness of blackboard eraser.

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