CN204801346U

CN204801346U - Scalable blackboard eraser

Info

Publication number: CN204801346U
Application number: CN201520445119.XU
Authority: CN
Inventors: 杨钲
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-24
Filing date: 2015-06-24
Publication date: 2015-11-25
Anticipated expiration: 2025-06-24

Abstract

The utility model discloses a scalable blackboard eraser, including blackboard eraser body, magnet, telescopic link, iron sheet, telescopic link and this body coupling of blackboard eraser, magnet in place the blackboard eraser body in, magnet and blackboard on the iron sheet magnetism that sets up connect. The utility model discloses a technical problem that some students can not clean the blackboard top has been solved in the drawing of built -in telescopic link, what be provided with simultaneously the arc recess on the telescopic link gets the hand position, and the people of being convenient for take, blackboard eraser ontology built -in has magnet, and fixes iron sheet in blackboard both sides and adsorbs and be connected, to look for everywhere and indiscriminate action of putting everywhere after using when having avoided the blackboard eraser to use, and global design low in cost, simple structure realizes easily that the practicality is strong.

Description

A kind of eraser with support bar

Technical field

The utility model relates to realia field, particularly relates to a kind of eraser with support bar.

Background technology

Blackboard be one can the plane of repeated writing, plate face is hard, be used for teaching, the most area of current China, be still and use traditional blackboard to be used as educational aid, blackboard is after writing, need to use blackboard eraser to clean totally, but a lot of student is because height problem, the region above blackboard cannot be wiped, cause the wiping of blackboard part unclean, some student can clip to make great efforts, jumping limit, limit is adopted to wipe or wiping on riding boogie board stool, not only require great effort, and there is potential safety hazard, sometimes, people do not know where blackboard eraser is put, also to take time and go for, consuming time inconvenient again.

For this phenomenon, a kind of extension type blackboard eraser of application number CN201020576361.8 has just solved the problem of height deficiency by the elongation of expansion link, but this design or Shortcomings, expansion link does not arrange fetching device, stretch out more difficult.

Utility model content

The utility model provides a kind of eraser with support bar for solving the problem, and by the stretching of built-in flexible bar, solves partial students wiping less than the technical problem above blackboard; What on expansion link, be provided with arc groove gets hand position simultaneously, is convenient to taking of people; Blackboard eraser body is built-in with magnet, carries out absorption be connected with the iron plate being fixed on blackboard both sides, and avoid when blackboard eraser uses and want look round for and the behavior that leaves about after using everywhere, global design is cheap, structure structure, is easy to realization, practical.

The purpose of this utility model is by realizing with under type:

A kind of eraser with support bar, comprise blackboard eraser body, magnet, expansion link, iron plate, described expansion link is connected with blackboard eraser body, and described magnet is built in blackboard eraser body, and described magnet is connected with the iron plate magnetic that blackboard is arranged.

Further, be provided with a cavity in described blackboard eraser body, described cavity is cylinder shape groove.

Further, described expansion link can be built in cavity after retracting.

Further, described expansion link surface is provided with handle position, and described handle position is arc groove.

Further, described iron plate is fixed on the both sides of blackboard.

Further, described expansion link has 2 ~ 5 to save, and described expansion link cross section is circular.

The beneficial effects of the utility model are:

A kind of eraser with support bar, by the stretching of built-in flexible bar, solves partial students wiping less than the technical problem above blackboard; What on expansion link, be provided with arc groove gets hand position simultaneously, is convenient to taking of people; Blackboard eraser body is built-in with magnet, carries out absorption be connected with the iron plate being fixed on blackboard both sides, avoids when blackboard eraser uses and wants look round for and the behavior that leaves about after using everywhere; Be built in by expansion link in blackboard eraser body, avoid the too much technical problem that takes up room, global design is cheap, structure structure, is easy to realize, practical.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a kind of eraser with support bar that the utility model relates to;

Fig. 2 is the schematic cross-section of a kind of eraser with support bar that the utility model relates to;

Fig. 3 is the placement schematic diagram of the iron plate that the utility model relates to.

Wherein, blackboard eraser body 1, magnet 2, expansion link 3, cavity 4, handle position 5, blackboard 6, iron plate 7.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model will be further described:

As shown in Figure 1, Figure 2 and Figure 3, a kind of eraser with support bar, comprise blackboard eraser body 1, magnet 2, expansion link 3, iron plate 7, described expansion link 3 is connected with blackboard eraser body 1, described magnet 2 is built in blackboard eraser body 1, and described magnet 2 is connected with iron plate 7 magnetic that blackboard 6 is arranged.

Further, be provided with a cavity 4 in described blackboard eraser body 1, described cavity 4 is cylinder shape groove.

Further, described expansion link 3 can be built in cavity 4 after retracting.

Further, described expansion link 3 surface is provided with handle position 5, and described handle position 5 is arc groove.

Further, described iron plate 7 is fixed on the both sides of blackboard 6.

Further, described expansion link 3 has 2 ~ 5 to save, and described expansion link 3 cross section is circular.

Specific embodiment

A kind of eraser with support bar, blackboard eraser is taken off from the iron plate on blackboard side, in the centre of blackboard eraser side, handle puts into the handle position of arc groove, outwards exerts oneself, expansion link starts to stretch toward outside, stopping after length to being applicable to oneself using to be tensioned, with hand-held bottom of getting expansion link, brandishing expansion link, blackboard eraser moves along with brandishing of expansion link on blackboard, thus completes wiped clean work.

After using, by expansion link compression and back blackboard eraser, blackboard eraser is put back on iron plate.

The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.

Claims

1. an eraser with support bar, comprise blackboard eraser body (1), magnet (2), expansion link (3), it is characterized in that: described expansion link (3) is connected with blackboard eraser body (1), described magnet (2) is built in blackboard eraser body (1), and described magnet (2) is connected with upper iron plate (7) magnetic arranged of blackboard (6).

2. a kind of eraser with support bar according to claim 1, is characterized in that: be provided with a cavity (4) in described blackboard eraser body (1), and described cavity (4) is cylinder shape groove.

3. a kind of eraser with support bar according to claim 2, is characterized in that: described expansion link (3) can be built in cavity (4) after retracting.

4. a kind of eraser with support bar according to claim 1, is characterized in that: described expansion link (3) surface is provided with handle position (5), and described handle position (5) is arc groove.

5. a kind of eraser with support bar according to claim 1, is characterized in that: described iron plate (7) is fixed on the both sides of blackboard (6).

6. a kind of eraser with support bar according to claim 1, is characterized in that: described expansion link (3) has 2 ~ 5 to save, and described expansion link (3) cross section is circular.