CN201423842Y

CN201423842Y - Erasing-free blackboard

Info

Publication number: CN201423842Y
Application number: CN2009200334952U
Authority: CN
Inventors: 王伟伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-10
Filing date: 2009-06-10
Publication date: 2010-03-17
Anticipated expiration: 2019-06-10

Abstract

The utility model belongs to the field of teaching appliances, relates to an erasing-free blackboard, and comprises a blackboard basal plate, a blackboard surface, a supporting frame, supporting axisand rollers, a transmission mechanism and a pressing mechanism. The blackboard basal plate is arranged on the supporting frame. The upper part and the lower part of the basal plate are respectively provided with an upper supporting axis and roller and a lower supporting axis and roller. A flexible composite panel encircles on the upper supporting axis and roller and the lower supporting axis and roller. A first gear is arranged on a shaft which is connected with the supporting frame. A second gear and a third gear are arranged on the supporting frame. A first pressing mechanism and a second pressing mechanism are respectively arranged near the upper supporting axis and roller and the lower supporting axis and roller. The erasing-free blackboard uses recyclable double board surface, not only can completely get rid of the harm to human body caused by chalk dust, but also needs no erasing when in use, saves time, is suitable to be used in various teaching places and training institutions,has simple structure, is simple and convenient to operate, and causes no harm to environment.

Description

A kind ofly exempt to wipe blackboard

Technical field

The utility model belongs to the teaching aid technical field, relates in particular to the blackboard that a kind of school classroom teaching is used.

Background technology

The normal blackboard of prior art generally has only plate face simple in structure to add the framework formation, or the plate face of frosted glass, or is coated with the coating of black after the cement polishing, and structure is single.Its course of work is as follows: blackboard is fixed on the metope, write on the plate face of blackboard with chalk, write when expiring a plate face, needing to write on the plate face letter written with chalk wipes totally, chalk has injury to Writer's finger in the process of writing, and produces dust in wiping the writing process people's cognition is damaged.The blackboard of new structure of the prior art, be actually the plate of a white, the general carbon pen that uses is write, but after writing completely, in the process of wiping, writing is not easy to wipe fully totally, and the time one is long, the dark line of pattern can appear in the space of a whole page of white, and these can have influence on student's eyesight.

The utility model content

At blackboard in the prior art exist write the time chalk dust can work the mischief to human body, the blank long technical problem that can become flower service time one, this practicality be the following technical scheme of property proposition newly:

A kind ofly exempt to wipe blackboard, comprise, the blackboard substrate, blackboard panel, bracing frame, bolster and cylinder, transmission mechanism and hold-down mechanism and rotating mechanism, bracing frame is provided with the substrate of blackboard, top and bottom at substrate are respectively equipped with upper support axle and cylinder and lower support axle and cylinder, upper support axle and cylinder and lower support axle and cylinder are provided with the flexible compound panel around upper support axle and cylinder and lower support axle and cylinder rotation, and the lower support axle is provided with first gear with the axle head that cylinder and bracing frame are connected with cylinder; The rotating mechanism that is made of second gear and the 3rd gear is arranged on the bracing frame, is respectively arranged with first hold-down mechanism and second hold-down mechanism in the position near upper support axle and cylinder and lower support axle and cylinder.

Describedly be arranged on flexible compound panel on upper support axle and cylinder and lower support axle and the cylinder by the skin of oil-containing and the internal layer of oil-containing do not constitute.Be provided with butter between the skin of the not oil-containing of described flexible compound panel and the internal layer of oil-containing.

The described transmission mechanism that constitutes jointly by first gear and the 3rd gear, second gear and the 3rd gear are arranged on the two ends of the lever of bending, and the 3rd gear is provided with handle.Described first gear and second gear and the 3rd gear be engagement simultaneously not.

First contact roller of described first hold-down mechanism is arranged between the internal layer of the skin of not oil-containing of described flexible compound panel and oil-containing, and second contact roller of described first hold-down mechanism is arranged on the outside of described flexible compound panel and contacts with the skin of oil-containing not.

The 3rd contact roller of described second hold-down mechanism is arranged on the outside of described flexible compound panel, and the 4th contact roller of described second hold-down mechanism is arranged on the inboard of described flexible compound panel.

A kind ofly exempt to wipe blackboard, comprise, the blackboard substrate, blackboard panel, bracing frame, bolster and cylinder, motor and transmission mechanism, hold-down mechanism and rotating mechanism, bracing frame is provided with the substrate of blackboard, top and bottom at substrate are respectively equipped with upper support axle and cylinder and lower support axle and cylinder, upper support axle and cylinder and lower support axle and cylinder are provided with the flexible compound panel around upper support axle and cylinder and lower support axle and cylinder rotation, and the lower support axle is provided with first gear with the axle head that cylinder is connected with bracing frame; The rotating mechanism that is made of second gear and the 3rd gear is arranged on the bracing frame, be respectively arranged with first hold-down mechanism and second hold-down mechanism in position near upper support axle and cylinder and lower support axle and cylinder, motor is arranged on the bracing frame, the axle of motor is provided with the 4th gear, when the 3rd is out of gear with first gear meshing, second gear will mesh simultaneously with first gear and the 4th gear.

The utility model compared with prior art, the plate face adopts the dual plate face of formula capable of circulation, both can be completely free of the worry of chalk dust to the human injury, can exempt from again in the use to wipe, can save time, be applicable to that various education and instructions place and training organization use, simple in structure, easy and simple to handle, can not work the mischief to environment.

Description of drawings

Fig. 1 the utility model exempts to wipe the structural representation of blackboard

Schematic diagram (released state) is looked on Fig. 2 the utility model first embodiment left side

Schematic diagram (engagement) is looked on Fig. 3 the utility model first embodiment left side

Fig. 4 rotating mechanism schematic diagram of the present utility model

Fig. 5 rotating mechanism of the present utility model installation site I enlarged diagram

Fig. 6 the utility model first hold-down mechanism II enlarged diagram

Fig. 7 the utility model second hold-down mechanism III enlarged diagram

Fig. 8 the utility model second embodiment mesh schematic representation

Fig. 9 the utility model second embodiment motor transmission position view

The specific embodiment

Below, be described further this use is novel in conjunction with the accompanying drawings:

As Fig. 1-shown in Figure 2, of the present utility modelly exempt to wipe blackboard, the bracing frame 19 of blackboard is provided with the substrate 6 of exempting to wipe blackboard, dual-side up and down at substrate 6 is respectively arranged with upper support axle and last cylinder 2 and lower support axle and bottom roll 3, the axis of upper support axle and last cylinder 2 and lower support axle and bottom roll 3 be arranged in parallel, the spindle nose of upper support axle and last cylinder 2 and lower support axle and bottom roll 3 all is arranged on the bracing frame 19, and the upper surface of substrate 6 is provided with blackboard panel.

Exempting to wipe blackboard panel is made of the flexible compound panel, the flexible compound panel is tubular structure, be looped around on upper support axle and last cylinder 2 and lower support axle and the bottom roll 3, the flexible compound panel is made of the skin 5 of the oil-containing not internal layer 4 with oil-containing, and the internal layer 4 plate faces of the utility model oil-containing are coloured film, and the skin 5 of oil-containing is not a colorless and transparent film, between the internal layer 4 of the skin 5 of oil-containing not and oil-containing, be provided with butter, see Fig. 2, Fig. 3, Fig. 5; The flexible compound panel can be around rotating on upper support axle and last cylinder 2 and lower support axle and the bottom roll 3, and lower support axle and bottom roll 3 are driving wheels, and upper support axle and last cylinder 2 are follower, are equipped with bearing holder (housing, cover) and bolster at the both ends of up-down roller.

First contact roller 9 of described first hold-down mechanism is arranged between the internal layer 4 of the skin 5 of not oil-containing of described flexible compound panel and oil-containing, second contact roller 10 of described first hold-down mechanism is arranged on the outside of described flexible compound panel and contacts with the skin 5 of oil-containing not, as shown in Figure 6.The 3rd contact roller 11 of described second hold-down mechanism is arranged on the outside of described flexible compound panel and contacts with the skin 5 of oil-containing not, and the 4th contact roller 12 of described second hold-down mechanism is arranged on the inboard of described flexible compound panel, as shown in Figure 7.The 3rd contact roller 11 of first contact roller 9, second contact roller 10 and second hold-down mechanism of first hold-down mechanism, the axis of the 4th contact roller 12 be arranged in parallel.

By the transmission mechanism that first gear 21 and the 3rd gear 17 constitute jointly, second gear 13 and the 3rd gear 17 all are arranged on the two ends of the lever 15 of bending, and the 3rd gear 17 is provided with handle 18.Described first gear 21 and second gear 13 and the 3rd gear 17 be engagement simultaneously not, sees Fig. 4.

Be described in detail the course of work of the present utility model below:

On the classroom, the user writes on the blackboard relevant content book according to the content of course and the needs of giving lessons, and of the present utility modelly exempts to wipe blackboard, is suitable for directly writing with finger, also is suitable for using wooden or plastics are made writes.Because be not provided with butter between the internal layer 4 of skin 5 and the oil-containing of oil-containing at the flexible compound panel, thereby, when writing, on the flexible compound panel, just demonstrate writing, when writing the whole space of a whole page of full composite panel, just need the replacing space of a whole page.At this moment, the user needs only the handle 18 that rotates on the 3rd gear that is arranged on the bracing frame 19, transmission mechanism is rotated, with be arranged on second gear 17 on the lever 15 and be arranged on bracing frame 19 and lower support axle and last cylinder 2 between axle on the engagement of first gear 21, first gear 21 rotates and will drive the flexible compound panel and make progress or rotate.Like this, with the flexible compound panel of writing in rotating process upwards, when turning to first hold-down mechanism of first contact roller 9 and second contact roller, 10 compositions, first contact roller 9 that will be set between the internal layer 4 of the skin 5 of not oil-containing of flexible compound panel and oil-containing separates the skin 5 of the not oil-containing of the flexible compound panel internal layer 4 with oil-containing, like this, the writing on the skin 5 of oil-containing will not disappear, when the writing complete obiteration on the whole flexible compound panel space of a whole page, just writing words can exempted to wipe on the blackboard again.

When the space of a whole page of exempting to wipe blackboard moves downward, above-mentioned process also is same generation, when turning to second hold-down mechanism of the 3rd contact roller 11 and the 4th contact roller 12 compositions, the 4th contact roller 12 that will be set between the internal layer 4 of the skin 5 of not oil-containing of flexible compound panel and oil-containing separates the skin 5 of the not oil-containing of the flexible compound panel internal layer 4 with oil-containing, like this, the writing on the skin 5 of oil-containing can not disappear equally, during the writing complete obiteration of whole composite panel, just can be on blackboard writing words again.

Among another embodiment of the present utility model, the overall structure of exempting to wipe blackboard is consistent with first embodiment, only is to change manual rotating mechanism into the motor driven gear reducing gear.Motor 24 is arranged on the bracing frame 19, the axle 25 of motor is provided with the 4th gear 23, the 4th gear 23 is arranged on the top of first gear 21, when the 3rd gear 17 and the 21 disengagement engagements of first gear, second gear 13 will mesh simultaneously with first gear 21, the 4th gear 23, and second gear 13 becomes idle wheel, and the rotation of the 4th gear 23 on the motor shaft 25 is delivered on first gear 21 by idle wheel second gear 13, see Fig. 8, Fig. 9.

When needs rotate the space of a whole page, as long as the lever 15 of bending is rotated, make the engagement of 17 disengagings of the 3rd gear and first gear 21 by handle 18, second gear 13 and first gear 21 and the 4th gear 23 are meshed simultaneously.At this moment, as long as with hand Push switch button (not drawing among the figure), motor 24 rotates and drives 23 rotations of the 4th gear, the 4th gear 23 rotates drive is connected the 3rd gear 17 on the separator, the 3rd gear 17 rotates, drive first gear 21 and rotate, first gear 21 drives the flexible compound panel rotation of exempting to wipe blackboard by lower support axle and bottom roll 3, and the skin 5 of the not oil-containing of flexible compound panel is the same with the described process of first embodiment with internal layer 4 separation process of oil-containing.

The utility model does not meet accident for safety with in using, thereby in the outside of transmission mechanism shell is set because transmission mechanism has used gear mechanism, has increased effect attractive in appearance yet.The principle of writing of the present utility model is the inscription rubbing principle, and the material of use also is robust versatile material, and use can not produce flying dust, can not produce harm to the user, also can not impact environment simultaneously.

Claims

1. exempt to wipe blackboard for one kind, comprise, blackboard substrate (6), blackboard panel, bracing frame (19), bolster and cylinder, transmission mechanism, hold-down mechanism and rotating mechanism, it is characterized in that: bracing frame (19) is provided with the substrate (6) of blackboard, top and bottom at substrate (6) are respectively equipped with upper support axle and last cylinder (2) and lower support axle and bottom roll (3), upper support axle and last cylinder (2) and lower support axle and bottom roll (3) are provided with the flexible compound panel around upper support axle and last cylinder (2) and lower support axle and bottom roll (3) rotation, and the lower support axle is provided with first gear (21) with the axle that bottom roll (3) is connected with bracing frame (19); Be arranged on the bracing frame (19) by second gear (13) and the transmission mechanism that the 3rd gear (17) constitutes, be respectively arranged with first hold-down mechanism and second hold-down mechanism in position near upper support axle and last cylinder (2) and lower support axle and bottom roll (3).

2. according to claim 1ly exempt to wipe blackboard, it is characterized in that: the described flexible compound panel that is arranged on upper support axle and last cylinder (2) and lower support axle and the bottom roll (3) is made of the internal layer (4) with oil-containing of the skin of oil-containing (5) not.

3. according to claim 2ly exempt to wipe blackboard, it is characterized in that: be provided with butter between the skin (5) of the not oil-containing of described flexible compound panel and the internal layer (4) of oil-containing.

4. according to claim 1ly exempt to wipe blackboard, it is characterized in that: described by the common transmission mechanism that constitutes of first gear (21) and the 3rd gear (17), second gear (13) and the 3rd gear (17) are arranged on the two ends of the lever (15) of bending, and the 3rd gear (17) is provided with handle (18).

5. according to claim 1ly exempt to wipe blackboard, it is characterized in that: described first gear (21) does not mesh simultaneously with second gear (13) and the 3rd gear (17).

6. according to claim 1ly exempt to wipe blackboard, it is characterized in that: first contact roller (9) of described first hold-down mechanism is arranged between the internal layer (4) of the skin (5) of not oil-containing of described flexible compound panel and oil-containing, and second contact roller (10) of described first hold-down mechanism is arranged on the outside of described flexible compound panel and contacts with the skin of oil-containing (5) not.

7. according to claim 1ly exempt to wipe blackboard, it is characterized in that: the 3rd contact roller (11) of described second hold-down mechanism is arranged on the outside of described flexible compound panel, and the 4th contact roller (12) of described second hold-down mechanism is arranged on the inboard of described flexible compound panel.

8. according to claim 1ly exempt to wipe blackboard, it is characterized in that: the axis of described upper support axle and last cylinder (2) and lower support axle and bottom roll (3) be arranged in parallel.

9. exempt to wipe blackboard for one kind, comprise, blackboard substrate (6), blackboard panel, bracing frame (19), bolster and cylinder, motor and transmission mechanism, hold-down mechanism and rotating mechanism, it is characterized in that: bracing frame (19) is provided with the substrate (6) of blackboard, top and bottom at substrate (6) are respectively equipped with upper support axle and last cylinder (2) and lower support axle and bottom roll (3), upper support axle and last cylinder (2) and lower support axle and bottom roll (3) are provided with the flexible compound panel around upper support axle and last cylinder (2) and lower support axle and bottom roll (3) rotation, and the lower support axle is provided with first gear (21) with the axle head that bottom roll (3) is connected with bracing frame (19); Be arranged on the bracing frame (19) by second gear (13) and the transmission mechanism that the 3rd gear (17) constitutes, be respectively arranged with first hold-down mechanism and second hold-down mechanism in position near upper support axle and last cylinder (2) and lower support axle and bottom roll (3), motor (24) is arranged on the bracing frame (19), the axle (25) of motor (24) is provided with the 4th gear (23), when the 3rd gear (17) is thrown off engagement with first gear (21), second gear (13) will mesh simultaneously with first gear (21) and the 4th gear (23).