CN2318047Y

CN2318047Y - Vertical rotary ash-free blackboard

Info

Publication number: CN2318047Y
Application number: CN 98210639
Authority: CN
Inventors: 马建农
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-23
Filing date: 1998-01-23
Publication date: 1999-05-12
Anticipated expiration: 2008-01-23

Abstract

The utility model relates to a vertical rotary dustless blackboard. The utility model is composed of an annular blackboard, two drums of an upper top and a lower bottom which are arranged in a ring of the annular blackboard, a roll-shaped blackboard eraser which is closely abutted on the blackboard face of lower bottom, a motor, a transmission mechanism of the motor and a dust collecting component of the lower part, wherein, the roll-shaped blackboard eraser and the dust collecting component are connected in a closed cavity formed by the lower bottom of the blackboard, and chalk words on the writing face of the annular blackboard positioned in the closed cavity of the lower bottom are erased by the roll-shaped blackboard eraser. The erased chalk dust in the closed cavity can not be flown in classrooms so that the problem of chalk dust pollution which always troubles teachers and students is solved. The whole blackboard in not thick. The utility model can be rotationally used.

Description

Upright rotary ashless blackboard

The utility model relates to a kind of articles for writing, particularly a kind of reusable clipboard.

At present, the teacher in the classroom to class hour on the student, the letter written with chalk of on blackboard, writing, chalk dust will fly upward when wiping, the speed of wiping is fast more, flies upward many more soon more.In order to save the class period, it is that The faster the better that the teacher erases the board, and preferably quickly just its polishing, this pollution to the space, classroom is extremely serious.Because the classroom of the usefulness of giving a lesson, its inner space was just limited originally, so this healthy influence to teacher and student is very big.Though have or not grey chalk now,, also can't in school, promote the use of because its cost is higher.

The purpose of this utility model provides a kind ofly can uprightly rotate the blackboard of use to space, classroom no dust pollution.

Upright rotary ashless blackboard is to realize like this; Adopt an annular blackboard, push up and go to the bottom in the annular blackboard circle cylinder is set respectively, near blackboard surface 1～2 roll forming blackboard eraser is set going to the bottom of annular blackboard, at one that goes to the bottom a motor is set, can drive cylinder, the work of roll forming blackboard eraser through transmission mechanism, the dust collection parts are set below annular blackboard, at two ends and the front baffle plate is set respectively; Roll forming blackboard eraser, dust collection parts all place in the enclosed cavity, and motor and transmission mechanism thereof place in another enclosed cavity.

Also can establish 1～2 roll forming blackboard eraser near blackboard surface in the annular blackboard back.The backing plate of a hard is set at the back side of annular blackboard writing surface.The writing surface of annular blackboard is the plate face that can not scratch through the reflective chalk of scared no minute surface.The tensile strength muscle is set in the annular blackboard both sides.Hand parts are set on transmission mechanism, when having electricity, can replace motor work.The dust collection drawer has more than 2 or 2.

The utility model is owing to adopt annular blackboard, and erasing the board is to be wiped quickly and easily by the roll forming blackboard eraser in the enclosed cavity below blackboard, and chalk dust can not fly upward in the classroom, and this has solved the chalk ash pollution that always perplexs teachers and students.It is convenient to remove dust simultaneously, and whole blackboard can be very not thick, can uprightly rotate use.

Knot platform accompanying drawing elaborates to the utility model below.

Fig. 1 is that the master of the utility model broken section looks schematic diagram;

Fig. 2 is the schematic diagram of the A-A view of Fig. 1.

With reference to Fig. 1, Fig. 2, upright rotary ashless blackboard is to be made of annular blackboard 10, cylinder 8,14, roll forming blackboard eraser 4,13, dust collection drawer 2, motor 3 and travelling gear 5 thereof.Annular blackboard 10 is that the plastics with toughness and tensile strength are made, and outer surface is through the scared processing of frosted, the no-reflection sense, and chalk is write not sliding pen, can not scratch, and is provided with in two boundary layers and strengthens the tensile strength muscle.Cylinder 8,14 with push up on the annular blackboard 10 and go to the bottom between tension, cylinder 8 has enough power to drive annular blackboard 10 and drive cylinders 14 by annular blackboard 10 to rotate.Below cylinder 14 two axles, withstand by spring 15 respectively, the loose slot of axle is arranged, guarantee annular blackboard 10 stretchings are convenient to write at the upper and lower sides of cylinder 14 axle beds.The back side by annular blackboard 10 writing surfaces is provided with a hard backing plate 9 that is fixed on the framework, and this helps chalk and writes on annular blackboard 10.Near blackboard surface roll forming blackboard eraser 4,13 is set going to the bottom of annular blackboard 10, one in front and one in back.The axle bed of cylinder 8,14, roll forming blackboard eraser 4,13 and motor 3 and travelling gear 5 thereof all are fixed on the framework.Two ends and front thereof at annular blackboard 10 are provided with baffle plate 11 respectively.4 dust collection drawers 2 are set below roll forming blackboard eraser 4,13, can drop within it by the chalk dust under 4,13 wipings of roll forming blackboard eraser, to certain hour its extraction is outwelled and to get final product, enclosed cavity is made of top annular blackboard face, back plate washer, the baffle plate 11 at two ends, following dust collection drawer 2.The outside of two the roll forming blackboard erasers 4,13 in this enclosed cavity can be provided with 2～4 dividing plates perpendicular to the blackboard end face that are fixed on the framework, constitutes several little enclosed cavities, and this can reduce the leakage of dust.Motor 3 and travelling gear 5 thereof place in another enclosed cavity.Motor 3 can rotating.Motor 3 is after travelling gear 5 slows down, by driving roll forming blackboard eraser 4,13, cylinder 8 rotations respectively with its

meshed gears

6,7.

When the word of writing on annular blackboard 10 need be wiped, start motor 3 and make cylinder 8, roll forming blackboard eraser 4,13 rotation work simultaneously, the plate face of the annular blackboard 10 that word is arranged is sent into enclosed cavity, after roll forming blackboard eraser 4,13 is wiped fast, letter written with chalk is promptly wiped clean, and the chalk dust of wiping can fall in the dust collection drawer 2 at leisure.The clipboard face of wiping clean simultaneously just forwards the front of backing plate 9 to, for continuing to write.

Claims

1. upright rotary ashless blackboard, comprise blackboard, it is characterized in that: described blackboard is annular blackboard [10], push up and go to the bottom in annular blackboard [10] circle cylinder [14,8] is set respectively, near blackboard surface roll forming blackboard eraser [4 or/and 13] is set going to the bottom of annular blackboard [10], at one that goes to the bottom a motor [3] that drives cylinder [8], roll forming blackboard eraser [4 or/and 13] work through transmission mechanism [5] is set, dust collection parts [2] are set below annular blackboard [10], at two ends and; The front is provided with baffle plate [11,3] respectively; Roll forming blackboard eraser [4,13], dust collection parts [2] all place in the enclosed cavity, and motor [3] and transmission mechanism [5] thereof place in another enclosed cavity.

2. ashless blackboard according to claim 1 is characterized in that: described roll forming blackboard eraser [4 or/and 13] also can be arranged on the back blackboard surface near annular blackboard [10].

3. ashless blackboard according to claim 1 and 2 is characterized in that: the backing plate [9] that a hard is set at the back side of annular blackboard [10] writing surface.

4. ashless blackboard according to claim 1 and 2 is characterized in that: described annular blackboard [10] is through the reflective writing surface of scared no minute surface.

5. ashless blackboard according to claim 1 and 2 is characterized in that: described annular blackboard [10] is provided with the tensile strength muscle in the both sides.

6. ashless blackboard according to claim 1 and 2 is characterized in that: the hand parts that can replace motor [3] work when not having electricity are being set on the transmission mechanism [5].

7. ashless blackboard according to claim 1 and 2 is characterized in that, described dust collection drawer [2] is more than 2 or 2.