CN201172335Y

CN201172335Y - Environment-protecting blackboard

Info

Publication number: CN201172335Y
Application number: CNU2008200452719U
Authority: CN
Inventors: 李青春
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-20
Filing date: 2008-03-20
Publication date: 2008-12-31
Anticipated expiration: 2018-03-20

Abstract

The utility model relates to an environment-friendly blackboard, which is of rotary type. Positioning shafts (6) available for rotary motion are respectively mounted at the upper portion and the lower portion of the blackboard, the blackboard can be driven by a driving device and can maintain a front face (1) as a writing face in any position, and the back face is equipped with a friction type brushing mechanism. The brushing mechanism comprises a fixing board and a brushing cloth fixed on the fixing board, slits for collecting dust are formed on the brushing cloth, and dust collecting grooves are mounted correspondingly to the downside of the slits. The environment-friendly blackboard can be rotated by the driving device to convert writing faces to write, the dust on the blackboard can be erased by friction between the rotating blackboard and the brushing mechanism during the conversion, the dust slides to the dust collecting groove through the slits, and after disposal of the dust, dangers from the chalk dust can be avoided or reduced, thereby keeping the indoor environment sanitary and favoring for the body health of teachers and students.

Description

Environment friendly blackboard

Technical field

The utility model relates to a kind of educational aid, is a kind of easy to use, the environment friendly blackboard that can avoid or reduce chalk dust harm specifically.

Background technology

Blackboard is as the instrument that diffuses information or impart knowledge and explain the puzzle, its kind is more and more, from the appearance, have the plane, curved surface; On material, there have cement to add to be black paint, wooden, plastic cement; On color, have black, white.Some is a fixed placement, and also some is liftable.Blackboard is to use the most general a kind of educational aid, in teaching process, constantly write in the above, delete, and with regard to handy eraser top writing is cleaned before reusing.In wiping process, chalk dust flies upward all over the sky, is flooded with whole classroom, pollutes indoor environment, and the harm academics and students's is healthy.The classmate who particularly sits in front, influence more very.For this reason, many classmates are reluctant to sit in front, and arrange the classmate who sits in front often to propose transposition, cause being discord between classmate and the classmate and between classmate and the teacher.Under such environment, influence student's learning initiative and teacher's quality of instruction inevitably.

Summary of the invention

The purpose of this utility model provides a kind of easy to use, the environment friendly blackboard that can avoid or reduce chalk dust harm.

The environment friendly blackboard that the utility model provides, this blackboard are swinging, respectively are equipped with up and down for it and make the locating shaft of gyration, and can be driven and be kept the front in any position by drive unit be writing surface, and the back side is equipped with friction-type and scrubs mechanism.

The described mechanism of scrubbing comprises fixed head and is fixed on brushing on the fixed head, is formed with the seam ditch that is used to collect dust in the described brushing, collection powder groove is installed below the corresponding seam ditch.

Described drive unit is an electrodynamic type, form by motor, driving gear, driven gear and chain drive, chain drive has two groups, be installed in the inner both sides of blackboard respectively, wherein the sprocket wheel of chain drive is installed on the locating shaft, the blackboard side is fixed on the chain of chain drive, and a driven gear and a sprocket wheel above the chain drive are connected as a single entity.

Described drive unit also comprises a hand wabbler mechanism, form by dwang, intermeshing gear wheel and pinion, the side of gear wheel is spaced apart fluted in same radial location, elastic press type latch and groove fit are housed on the dwang, and a sprocket wheel below pinion and the chain drive is connected as a single entity.

Described elastic press type latch is made up of sleeve, spring and bearing pin, and sleeve is vertically fixed on the dwang, and spring is built in and presses bearing pin in the sleeve.

The utility model is owing to be swinging, and there is friction-type to scrub mechanism at the blackboard back side, in the time of top writing need being cleaned, can blackboard rotated by drive unit, the conversion writing surface is write, and in conversion process, the blackboard of rotation rubs mutually and wipes dust on the blackboard with scrubbing mechanism, dust by the seam ditch landing on collection powder groove, dust is disposed, can avoid or reduce chalk dust harm, keep indoor environmental hygiene, help the healthy of academics and students.

Description of drawings

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is a front view of scrubbing mechanism;

Fig. 4 is the structure chart of gear wheel;

Fig. 5 is the structure chart of hand wabbler mechanism.

The specific embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the environment friendly blackboard that the utility model provides, this blackboard is a swinging, make by plastic material, make the locating shaft 6 of gyration by respectively being equipped with up and down for it, can be driven and be kept front 1 in any position by drive unit be writing surface, and the back side 9 is equipped with friction-type and scrubs mechanism.

The described mechanism of scrubbing comprises fixed head 12 and the brushing 11 that is fixed on the fixed head, fixed head 12 upper-thin-lower-thicks, be trapezoidal shape, brushing 11 is made by flannelette, can adopt bonding mode or with securing member itself and fixed head 12 is coupled together, and be formed with the seam ditch 15 that is used to collect dust, the shape of seam ditch 15 should alternately stagger with brushing 11, improves wiping effect, collection powder groove 13 is installed below the corresponding seam ditch 15, collection powder groove 13 is preferably movable, is convenient to take out and cleans and install.

Described drive unit is an electrodynamic type, form by motor 7, driving gear 8, driven gear 5 and chain drive, chain drive has two groups, be installed in the inner both sides of blackboard respectively, wherein the sprocket wheel 10 of chain drive is installed on the locating shaft 6 by bearing, the blackboard side is fixed on the chain 14 of chain drive, and a driven gear 5 and a sprocket wheel 10 above the chain drive are connected as a single entity.

Described drive unit also comprises a hand wabbler mechanism, form by dwang 3, intermeshing gear wheel 4 and pinion 2, the side of gear wheel 4 is in same radial location spaced apart fluted 16, the elastic press type latch is housed on the dwang 3, the elastic press type latch is made up of sleeve 19, spring 17 and bearing pin 18, sleeve 19 is vertically fixed on the dwang 3, spring 17 is built in and presses bearing pin 18 in the sleeve 19, wherein bearing pin 18 outer ends cooperate with groove 16, and the sprocket wheel 10 of pinion 2 below chain drive is connected as a single entity.

The utility model can be installed on the support body or directly it is installed in the classroom on the wall by installed part.

As be installed in the classroom on the wall, install earlier and scrub mechanism, with the fixed head 12 of scrubbing mechanism by the screw dress on the wall, brushing 11 sticks on 12 of the fixed heads, and corresponding seam ditch 15 exit positions are loaded onto and are collected powder groove 13 fixed head 12 below then;

Will be wherein a locating shaft 6 be inserted in the swinging blackboard, be fixed on by installed part and scrub above the mechanism, and then be inserted in another locating shaft 6 and be installed in and scrub below the mechanism, the distance between two locating shafts 6 is adjustable;

Load onto sprocket wheel 10 respectively at locating shaft 6 two ends, install two chains 14, the swinging blackboard is enclosed within the chain drive outside chain 14 and swinging blackboard is fixed with steel wire;

Install electric driving device and hand wabbler mechanism in the relevant position.

During use, can operate by control electric driving device or hand wabbler mechanism.

Claims

1, a kind of environment friendly blackboard is characterized in that this blackboard is a swinging, respectively is equipped with up and down for it and makes the locating shaft [6] of gyration, and can be driven and be kept positive [1] in any position by drive unit be writing surface, and the back side [9] are equipped with friction-type and scrub mechanism.

2, environment friendly blackboard according to claim 1, it is characterized in that the described mechanism of scrubbing comprises fixed head [12] and is fixed on brushing [11] on the fixed head, be formed with the seam ditch [15] that is used to collect dust in the described brushing [11], collection powder groove [13] be installed below the corresponding seam ditch.

3, environment friendly blackboard according to claim 1, it is characterized in that described drive unit is an electrodynamic type, form by motor [7], driving gear [8], driven gear [5] and chain drive, chain drive has two groups, be installed in the inner both sides of blackboard respectively, wherein the sprocket wheel of chain drive [10] is installed on the locating shaft [6], and the blackboard side is fixed on the chain [14] of chain drive, and a driven gear [5] and a sprocket wheel above the chain drive are connected as a single entity.

4, environment friendly blackboard according to claim 3, it is characterized in that described drive unit also comprises a hand wabbler mechanism, form by dwang [3], intermeshing gear wheel [4] and pinion [2], the side of gear wheel [4] is in same radial location spaced apart fluted [16], the elastic press type latch is housed on the dwang [3] cooperates with groove [16], the sprocket wheel of pinion [2] below chain drive is connected as a single entity.

5, environment friendly blackboard according to claim 4 is characterized in that described elastic press type latch is made up of sleeve [19], spring [17] and bearing pin [18], and sleeve [19] is vertically fixed on the dwang [3], and spring [17] is built in and presses bearing pin [18] in the sleeve [19].