CN203004833U

CN203004833U - Labor-saving blackboard eraser

Info

Publication number: CN203004833U
Application number: CN 201220683232
Authority: CN
Inventors: 卞振威
Original assignee: Shenzhen Futian District Youth Science Education Association
Current assignee: Shenzhen Futian District Youth Science Education Association
Priority date: 2012-12-12
Filing date: 2012-12-12
Publication date: 2013-06-19
Anticipated expiration: 2022-12-12

Abstract

The utility model relates to a labor-saving blackboard eraser comprising a blackboard eraser body. A rubber sheet with corrugated shape streaks is embedded in the middle where blackboard eraser cloth is combined with the blackboard eraser body, so chalk ashes are easily erased. A blackboard eraser face is designed to be an H-shaped grab handle, and the blackboard eraser cloth can be detached and can be cleaned or can be replaced by new blackboard eraser cloth.

Description

Labor-saving blackboard eraser

Technical field

The utility model belongs to realia application, especially Labor-saving blackboard eraser.

Background technology

Blackboard eraser is one of indispensable teaching aid of each school, even remain in the situation that multimedia is popularized the campus blackboard eraser realia of not replacing.Teacher still can use blackboard to lecture knowledge to the student in teaching process.A blackboard eraser is wiped and need not be exertd great efforts, but in the teaching process, if teacher's content is a lot, will repeatedly writes writing on the blackboard and then wipe the thing of having lectured, and teacher will be very tired like this.How making easily erasing chalk word of teacher, is a problem that is worth solution.

Summary of the invention

The purpose that the utility model provides is the problem that how easily to erase the board in order to solve, and the utility model provides a kind of Labor-saving blackboard eraser.The middle embedding of being combined with the blackboard eraser body at wiping board cloth has corrugated striped sheet rubber, the frictional force that produces when moving blackboard eraser is evenly distributed on outstanding corrugation striped, the blackboard eraser face just can be under same function power condition, change the lifting surface area size, increase the outstanding local stressing conditions of corrugation striped, thereby by corrugation striped and blackboard friction, easier erasing chalk ash.

Further technological improvement of the present utility model, every corrugation fringe spacing distance is 2mm ~ 5mm.The corrugation interval is crossed conference and is caused lifting surface area too small, and blackboard eraser gets up and more requires great effort; The corrugation fringe spacing is too small, plays little increase local area force-bearing situation.The utility model is made as 2.2mm in order to reach ideal effect with every corrugation fringe spacing distance.

Further technological improvement of the present utility model is designed to " work " word handle type with the blackboard eraser back side.More comfortable when people use blackboard eraser like this, meet ergonomics.

Further technological improvement of the present utility model is designed to blackboard eraser cloth detachably, and blackboard eraser easily amasss full dust because often erase the board in blackboard eraser cloth, and long-pending full dust just hinders blackboard eraser to use.Just be difficult to accomplish thorough cleaning by patting blackboard eraser, blackboard eraser cloth is wiped and can be cleaned thoroughly.And blackboard eraser is frequent the time, and blackboard eraser cloth easily breaks down, and whole blackboard eraser is lost waste rather, is a selection that material benefit is economic so change blackboard eraser cloth.

The beneficial effects of the utility model:

Carry out technological improvement by the technical solution of the utility model tradition blackboard eraser, cost increases not obvious, is conducive to the more convenient erasing blackboard of the clergy of school, attends class lighter, and the blackboard wiper is detachable, largely reduces the instruction cost of school with old renewal.

Description of drawings

Fig. 1 is the overall schematic of the utility model Labor-saving blackboard eraser;

Fig. 2 is the corrugated striped schematic diagram of the utility model triumph blackboard eraser.

The specific embodiment

Understand and implement the utility model for the ease of those of ordinary skills, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.

Embodiment:

See that Fig. 1 Fig. 1 is the overall schematic of the utility model Labor-saving blackboard eraser, comprise blackboard eraser 1, blackboard eraser cloth 2.At the handle 3 of " work " type of blackboard eraser back side design, " work " font, handle length are 10cm, and the height of carrying on the back apart from blackboard eraser is 3cm, and handle is too short from being difficult for apart from the blackboard eraser identity distance, otherwise the too thick people of palm is difficult for using.Blackboard eraser cloth detachably carries out cleaned and changed, at blackboard eraser cloth four angles, four duck eyes are arranged, it is 0.5cm that four angles of blackboard eraser back end section have the degree of depth equally, and diameter is four holes of 0.3cm, with screw, blackboard eraser cloth is fixed on blackboard eraser back end section, in blackboard eraser cloth bad time, removes and can more renew.Blackboard eraser cloth is designed to double deck type, inserts corrugated striped sheet rubber 4 in the middle of blackboard eraser cloth, and the every stripe spacing of corrugated striped is 2.2mm.When using blackboard eraser, blackboard eraser can increase by-local forces what equably under identical power effect like this, moves around with regard to easier erasing chalk powder by blackboard eraser.

Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims

1. OnePlant Labor-saving blackboard eraser, comprise blackboard eraser (1) body, it is characterized in that wiping board cloth (2) and the middle embedding of blackboard eraser back of the body combination have the sheet rubber (4) of corrugated striped, easy erasing chalk ash.

2. Labor-saving blackboard eraser according to claim 1 is characterized in that every corrugation fringe spacing distance is 2mm ~ 5mm.

3. Labor-saving blackboard eraser according to claim 1 is characterized in that every corrugation fringe spacing distance is 2.2mm.

4. Labor-saving blackboard eraser according to claim 1, is characterized in that blackboard eraser cloth (2) is detachable, the blackboard eraser cloth (2) that cleans or more renew.

5. Labor-saving blackboard eraser according to claim 1, is characterized in that board wiper plane is designed to " work " font handle (3).