CN2288849Y

CN2288849Y - Crawler-type blackboard

Info

Publication number: CN2288849Y
Application number: CN 95217941
Authority: CN
Inventors: 赵印海; 于秀芝
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-20
Filing date: 1995-07-20
Publication date: 1998-08-26
Anticipated expiration: 2005-07-20

Abstract

The utility model discloses a crawler type blackboard and a dust eliminating eraser of the crawler type blackboard. An annular blackboard belt is hung on an upper and a lower shaft rollers, and the inner side of the annular blackboard belt is provided with a lining board. The dust eliminating eraser is arranged under the crawler type blackboard. The writing position can be adjusted up and down by rotating the lower shaft roller and the blackboard can be erased automatically. Because no powder dust flies, the body health of teachers and students can be effectively protected. Under the condition of the same writing area, the area on the transverse direction of the crawler type blackboard is shortened by 50% compared with an existing blackboard. Thus, the angle of viewing the blackboard by students is decreased and the utility model can play the function of protecting the vision of students.

Description

Crawler-type blackboard

The utility model relates to a kind of crawler-type blackboard and aspirating blackboard of being made up of annular blackboard band, liner plate, beaming roller, joystick, roll-type wiping, dust cover, dust brush, dust box and chain thereof and wipes.

Existing blackboard has two kinds: a kind of is fixed blackboard, and it can not the up-down adjustment position when writing, and dust flies away everywhere when erasing the board, contaminated environment, and laterally the long difficulty that causes and arranged on left and right sides observation of students blackboard influences student eyesight; Another kind is that two blackboards link by chain, each blackboard of front and back, can by two blackboards up and down relative motion regulate height, when erasing the board, dust flies away everywhere, vertically longly can only be used for lyceum.

The purpose of this utility model provides a kind of crawler-type blackboard and aspirating blackboard is wiped, its energy up-down adjustment writing position, and automatic blackboard cleaning under the write area same case, is compared lateral length and has been shortened 50 percent with existing blackboard.

For achieving the above object, the utility model adopts a kind of annular blackboard band, it hangs over, on the lower roller, in the adjusting, distance between the lower roller, before the formation, latter two blackboard surface, rotate lower roller, blackboard surface can move up and down, regulate writing position, there is the liner plate of an energy clutch preceding blackboard surface inboard, prevent the blackboard surface vibration, aspirating blackboard of the following installation of crawler-type blackboard is wiped, aspirating blackboard is wiped and is wiped by roll-type, the dust cover, dust brush and dust box are formed, roll-type is housed in the dust cover wipes, the dust brush, roll-type is wiped with the dust cover sealed at both ends, and can freely rotate, dust cover bottom surface respectively hangs a dust box near two ends, being provided with aperture between dust cover and the dust box communicates, roll-type wipe and lower roller by chain drive, this aspirating blackboard wipe with crawler-type blackboard can clutch, when aspirating blackboard wiping and crawler-type blackboard close, the annular blackboard band is wiped roll-type and is enclosed in the dust cover, dust flies away everywhere when preventing to erase the board, and roll-type is wiped with crawler-type blackboard and suited, and shakes lower roller and drives roll-type wiping rotation by chain, make roll-type wipe rub relative with blackboard surface, crawler-type blackboard is cleaned, and dust drops in the dust cover, and move left and right dust brush sweeps dust in the dust box, regularly dust is removed, no dust flies away.

The utility model has the advantages that: (1). can regulate writing position, make the writer remain the state of writing easily; (2). automatic blackboard cleaning, no dust flies away, and has protected effectively that teachers and students' is healthy; (3). because lateral length has shortened 50 percent, reduce the angle of observation of students blackboard, played the effect of protection student eyesight, had good social benefit.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is the schematic diagram that the utility model crawler-type blackboard and aspirating blackboard thereof are wiped.

As shown in Figure 1, this crawler-type blackboard and aspirating blackboard thereof are wiped by annular blackboard band [1], upward beaming roller [2], lower roller [3], liner plate [4], joystick [5], roll-type wiping [6], dust cover [7], dust brush [8], dust box [9], chain [10] are formed.Annular blackboard band [1] hangs on beaming roller [2] and the lower roller [3], liner plate [4] and the clutch of annular blackboard band [1] energy, aspirating blackboard is wiped and annular blackboard band [1] also can clutch, aspirating blackboard is wiped by roll-type and is wiped [6], dust cover [7], dust brush [8] and dust box [9], form, roll-type wiping [6] and dust cover [7] are sealed at both ends, and roll-type wiping [6] can freely be rotated, when writing, liner plate [4] and annular blackboard band [1] are fitted, prevent the blackboard surface porpoising, aspirating blackboard is wiped and is separated with annular blackboard band [1], shakes joystick lower roller [3] is rotated, drive annular blackboard band [1], regulate writing position; When erasing the board, liner plate [4] is separated with annular blackboard band [1], aspirating blackboard is wiped and annular blackboard band [1] closes, annular blackboard band [1] is wiped [6] with roll-type and is enclosed in the dust cover [7], roll-type wiping [6] is gone up annular blackboard band [1] and is suited, shaking joystick [5] rotates lower roller [3], drive roll-type by chain [10] and wipe [6] and the relative friction of annular blackboard band [1] generation, blackboard surface is cleaned, dust drops on dust cover [7] lining, move left and right dust brush [8] sweeps dust in the dust box [9], regularly dust is removed, and no dust flies away.

Claims

1. crawler-type blackboard, it comprises annular blackboard band [1], goes up beaming roller [2], lower roller [3], liner plate [4], joystick [5] and aspirating blackboard wiping, it is characterized in that:

A. annular blackboard band [1] hangs on beaming roller [2] and the lower roller [3], and there is a liner plate [4] inboard of annular blackboard band [1], and an end of lower roller [3] is provided with joystick [5];

B. the outside of the following annular blackboard band [1] of lower roller [3] is provided with the aspirating blackboard wiping, it comprises that roll-type is wiped [6], dust cover [7], dust is brushed [8] and dust box [9], be equipped with roll-type in the dust cover [7] and wipe [6] and dust brush [8], the left and right dust box [9] of respectively hanging, it is sealed at both ends with dust cover [7] that roll-type is wiped [6], and roll-type is wiped [6] and can freely be rotated, and has aperture to communicate between dust cover [7] and the dust box [9];

C. lower roller [3] and roll-type are wiped [6] by chain [10] transmission.