CN2368724Y

CN2368724Y - Electric blackboard eraser

Info

Publication number: CN2368724Y
Application number: CN 99228116
Authority: CN
Inventors: 陈东文
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-08
Filing date: 1999-04-08
Publication date: 2000-03-15
Anticipated expiration: 2009-04-08

Abstract

The utility model relates to an electric blackboard eraser, which is composed of a frame, a blackboard eraser and a transmission device. The utility model is characterized in that the blackboard eraser comprises a pedestal and a board eraser, and both ends of the pedestal is sheathed and connected with an upper frame rod and a lower frame rod of the frame. The transmission device comprises a motor and a thread pull rod, and the pull rod is connected with the motor by a belt pulley. The tail end of the pull rod is fixed to the middle part of the pedestal. The utility model not only once cleanly wipes chalk characters on a blackboard, reduce flying dust, and is favorable for the health of teachers and students, but also has the advantages of simple structure and low cost.

Description

A kind of electric blackboard eraser

The utility model relates to a kind of blackboard eraser, specifically a kind of electric blackboard eraser.

General commonly used blackboard eraser needs repeated multiple times ground wiping on the blackboard and the letter written with chalk on the blackboard could cleaned back and forth, and dust is inevitably by in teacher, the student's suction body and unhealthful.In order to solve dust problem, people have invented various electric dust absorption blackboard erasers.As application number: 85202270, the applying date: 850614 " blackboard brush that has electric dust collector ", be blackboard brush to be connected with dust catcher by connector realize dust-absorbing function, but need repeated multiple times ground equally at the letter written with chalk of wiping back and forth on the blackboard on just cleaning off a blackboard, and this wiping blackboard structure complexity is heavy, so use inconvenience.

The purpose of this utility model provides a kind of once can cleaning off a blackboard and goes up the electric blackboard eraser of whole letter written with chalks.

The purpose of this utility model is realized by following technical scheme.

The utility model is made up of framework, blackboard eraser and transmission device, it is characterized in that:

A, blackboard eraser comprise base and blackboard eraser, and base two tops are coupled on the upper and lower frame bar of framework by slip ring sleeve;

B, transmission device comprise motor and thread, and pull bar is connected with motor by belt pulley, and end is fixed in the middle part of base.

The base upper end is provided with a positioning block in addition.The lower end is provided with a spring, and the blackboard eraser inlay card is between locating piece and spring.The left frame of framework is provided with a locating slot, and pull bar passes locating slot, and lower frame is connected with an ash-pit.

During use, at first framework is embedded in outside the blackboard, make with blackboard with wide blackboard eraser gland on blackboard surface, starter motor, making it drive the pull bar rotation by belt pulley makes the blackboard eraser that is connected with pull bar from the other end of blackboard one end wiping to blackboard, thereby disposable whole letter written with chalks on the blackboard are cleaned, dust falls within the ash-pit.

The utility model has the advantages that the letter written with chalk on not only can disposablely cleaning off a blackboard, reduce flying upward of dust, favourable teachers and students' is healthy, and this product structure is simple, with low cost.

Fig. 1 is the utility model structural representation.

By the following examples, in conjunction with the accompanying drawings, the utility model is done to describe further.

Embodiment:

(referring to Fig. 1) the utility model is made up of framework 1, blackboard eraser 2 and transmission device 3.Blackboard eraser 2 comprises base 4 and blackboard eraser 5, and a positioning block 8 is established in base 4 upper ends, and a spring 9 is established in the lower end, and blackboard eraser 5 inlay cards are between locating piece and spring.4 liang of tops of base are coupled on the upper and lower frame bar of framework 1 by slip ring 6 covers.Transmission device comprises motor 6 and thread 7, and pull bar 7 is connected with motor 6 by belt pulley, and end is fixed in the middle part of base 4.The left frame of framework 1 is provided with a locating slot 10, and pull bar 7 passes wherein, and lower frame connects an ash-pit 11.

Claims

1, a kind of electric blackboard eraser is made up of framework (1), blackboard eraser (2) and transmission device (3), it is characterized in that:

A, blackboard eraser (2) comprise base (4) and blackboard eraser (5), and base (4) two tops are coupled on the upper and lower frame bar of framework (1) by slip ring (6) cover;

B, transmission device comprise motor (6) and thread (7), and pull bar (7) is connected with motor (6) by belt pulley, and end is fixed in the middle part of base (4).

2, electric blackboard eraser according to claim 1 is characterized in that: base (4) upper end is provided with a positioning block (8), and the lower end is provided with a spring (9), and blackboard eraser (5) inlay card is between locating piece (8) and spring (9).

3, electric blackboard eraser according to claim 1 is characterized in that: the left frame of framework (1) is provided with a locating slot (10), and pull bar (7) passes locating slot (10), and lower frame is connected with an ash-pit (11).