CN2516360Y - Expansion eraser - Google Patents

Abstract

The utility model relates to a novel extensible blackboard eraser, belonging to a technical field of operation transportation department, printing branch-department, writing or drawing apparatus; office articles, writing or drawing articles, writing or drawing auxiliary articles, blackboard or flagstone cleaning device. The classification number is B43L21/00. The utility model is composed of a board eraser, an iron sheet, a rod I, nails, a rod II, and a rod III. The utility model is characterized in that the rod I is arranged at the rear middle of the board eraser, the iron sheet is arranged at the upper end of the rod I, the rod II is arranged at the internal position of the rod I, the rod III is arranged at the internal position of the rod II. The utility model is a novel extensible board eraser with practical value.

Description

The novel telescopic blackboard eraser

(1) technical field:

The utility model relates to the novel telescopic blackboard eraser.Belong to operation Department of Transportation by International Patent Classification (IPC) (IPC) division, printing branch is write or drawing appliance; The big class of office appliance is write or drawing article, the assistant product group of writing or draw, the cleaning device technical group field of blackboard or slabstone.Classification number is B43L21/00.

(2) background technology:

At present, the technology about the cleaning device of blackboard or slabstone existing and that once had was all done very fruitful effort to the demand of novel telescopic blackboard eraser, also once designed many outstanding technical schemes.As being declared by An Liwei of the Decree of Patent Office of China in 1996, Granted publication number is CN2217523Y, and China Patent No. (ZL) is: No. 94222092.7 utility model title is the utility model patent of " dustproof chalkboard eraser ", the technical scheme that is adopted.Cleaning device technical elements at blackboard or slabstone is a routine of great value invention, and it has solved chalkboard eraser dustproof problem effectively.But still have some deficits, it also is difficult to solve owing to the height reason problem that traditional blackboard eraser is inconvenient to use for little classmate.

(3) summary of the invention:

The purpose of this utility model is to provide a kind of novel telescopic blackboard eraser.To solve owing to the height reason problem that traditional blackboard eraser is inconvenient to use for little classmate.

The purpose of this utility model is achieved in that the novel telescopic blackboard eraser of this utility model.Mainly constitute by blackboard eraser, iron plate, bar I, nail, bar II, bar III.Its blackboard eraser, nail are by selecting for use on the market.Its iron plate is an elongate in shape, uses the iron sheet material, through the cutting processing manufacturing.Its bar I, bar II are the hollow cylinder shapes, use plastic material, through the injection moulding processing and manufacturing.Its bar III is a cylindrical shape, uses plastic material, through the injection moulding processing and manufacturing.Bar I adopts pressing method to be installed in the centre position, rear portion of blackboard eraser, constitutes convex shape, and function is to play the role of positioning.Iron plate adopts the nail method to be installed in the upper end position of bar I, constitutes the elongate in shape fixed structure, and function is to play the role of positioning.Bar II adopts rubbing method to be installed in the interior location of bar I, constitutes stock shape elongate structure, and function has been the lengthening effect.Bar III adopts rubbing method to be installed in the interior location of bar II, constitutes stock shape elongate structure, and function has been the lengthening effect.So just realized the purpose of this utility model.

The advantage of utility model: the utility model has been compared two advantages and improvement with the original blackboard or the cleaning device technology of slabstone;

The first, because the utility model has designed the blackboard eraser of band expansion link in technical scheme, thus convenient and practical, compact conformation;

The second, because the utility model has designed iron plate in technical scheme, so can locate; Thereby just can more effectively solve owing to the height reason problem that traditional blackboard eraser is inconvenient to use for little classmate.

(4) description of drawings:

Accompanying drawing provides structural representation of the present utility model:

Fig. 1 is the main TV structure schematic diagram of novel telescopic blackboard eraser of the present utility model;

The numbering of parts explanation in the schematic diagram: 1 blackboard eraser, 2 iron plates, 3 bar I, 4 nails, 5 bar II, 6 bar III

(5) specific embodiment:

In the optimum implementation of novel telescopic blackboard eraser of the present utility model, its technical scheme is achieved in that and below in conjunction with accompanying drawing the utility model is described further:

Its static structure: see also Fig. 1: as shown in the figure, novel telescopic blackboard eraser of the present utility model.Mainly constitute by blackboard eraser 1, iron plate 2, bar I3, nail 4, bar II5, bar III6.Bar I3 adopts pressing method to be installed in the centre position, rear portion of blackboard eraser 1, constitutes convex shape, and function is to play the role of positioning.Iron plate 2 adopts the nail method to be installed in the upper end position of bar I3, constitutes the elongate in shape fixed structure, and function is to play the role of positioning.Bar II5 adopts rubbing method to be installed in the interior location of bar I3, constitutes stock shape elongate structure, and function has been the lengthening effect.Bar III6 adopts rubbing method to be installed in the interior location of bar II5, constitutes stock shape elongate structure, and function has been the lengthening effect.

Its dynamic structure: in force:

Its bar II6 acts on blackboard eraser 1 by bar III5, thereby finishes erasing the board of task.Its blackboard eraser 1 acts on blackboard, thereby finishes erasing the board of task.So just realized the purpose of this utility model.Thereby just can solve owing to the height reason problem that traditional blackboard eraser is inconvenient to use for little classmate.

Below by using method, the utility model is done more detailed description:

The novel telescopic blackboard eraser of this utility model is work like this:

In use, when reaching blackboard, bar is pulled out.Its bar II6 acts on blackboard eraser 1 by bar III5, thereby finishes erasing the board of task.

In use, when at ordinary times the time, in bar III6, bar II5, bar I3.Its blackboard eraser 1 acts on blackboard, thereby finishes erasing the board of task.

Realize that preferred plan of the present utility model is is material with plastics, utilize the basic equipment of stationery factory, take to produce by batch in a large number, the demand with supply stationery circle so just can realize practical value of the present utility model and economic worth better.

Claims (4)

1. novel telescopic blackboard eraser, it is to be made of blackboard eraser (1), iron plate (2), bar I (3), nail (4), bar II (5), bar III (6), it is characterized in that bar I (3) is installed in the centre position, rear portion of blackboard eraser (1).

2. novel telescopic blackboard eraser according to claim 1 is characterized in that iron plate (2) is installed in the upper end position of bar I (3).

3. novel telescopic blackboard eraser according to claim 1 is characterized in that bar II (5) is installed in the interior location of bar I (3).

4. novel telescopic blackboard eraser according to claim 1 is characterized in that bar III (6) is installed in the interior location of bar II (5).

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