CN201856522U

CN201856522U - Rotary type blackboard

Info

Publication number: CN201856522U
Application number: CN 201020580184
Authority: CN
Inventors: 刘欣; 韩银芝
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2011-06-08
Anticipated expiration: 2020-10-28

Abstract

The utility model discloses a rotary blackboard, specifically a mechanical device with induction, a mechanical and automatic erasable rotary blackboard capable of sensing the position of the blackboard eraser; it comprises a ring-shaped blackboard surface, which is covered with On the parallel driving shaft and the driven shaft, the driving shaft and the driven shaft are fixed on the outer frame of the blackboard; the driving shaft is connected with the motor; at least one vertical track is also fixed on the outer frame of the blackboard, and the vertical track is provided with The moving horizontal track is provided with a sliding erasing device. The utility model increases the use area of the blackboard, uses the matching external blackboard eraser and internal blackboard eraser to realize the automatic erasing function, and eliminates the use of chalk, without the environmental pollution caused by chalk dust and the impact on human health; And the blackboard of white soft material can be used as a projector screen.

Description

A kind of rotary blackboard

Technical field

The utility model relates to a kind of rotary blackboard, specifically is the mechanical device that has induction to exist, and is to respond to the rotary blackboard that the mechanical type of blackboard eraser position can be wiped automatically.

Background technology

At present, known blackboard structure generally is to be spliced and combined by wood based panel or steel plate to form, and plate is fixing on the wall, and writes with white chalk; The teaching equipment that also has the combination of blank and black signature pen; Also have some magnetic sheets in addition.But, existing blackboard usable floor area is very little, and main the utilization with calcium sulfate and calcium carbonate is that the chalk of main component is write, big to the chalk demand, be easy to generate the heavy pollution of chalk during manual erase, easily cause the discomfort of body parts such as nose, pharynx, larynx, and existing blackboard function singleness, the function of projection screen do not had.

Summary of the invention

Little in order to overcome existing blackboard usable floor area, the trouble of manual erase and chalk influence the deficiency of health aspect, the utility model provides a kind of blackboard, this blackboard can increase usable floor area, automatic erase feature is arranged, replaced chalk with magnetic pen, and the utility model can be directly as projection screen.

For achieving the above object, the utility model adopts following technical scheme:

A kind of rotary blackboard, it comprises the annular blackboard face, and the annular blackboard face is enclosed within on the parallel driving shaft and driven shaft, and driving shaft and driven shaft are fixed on the blackboard outside framework; Described driving shaft is connected with motor; Also be fixed with at least one vertical track on the described blackboard outside framework, vertical track is provided with mobile horizontal rail, and horizontal rail is provided with the erasing apparatus of slip.

The two ends of described driving shaft are provided with gear, and gear is connected with driven shaft by hinge.

Described erasing apparatus comprises the internal black blackboard eraser that is connected with motor, and the internal black blackboard eraser matches with outside blackboard eraser by piezoelectric inductor; Described piezoelectric inductor is positioned between blackboard surface and gripper shoe.

Described internal black blackboard eraser is that the energising that is placed in the blackboard surface shows the magnetic iron block.

Parts annexation and using method: utilizing two wheel shafts of hinged driving shaft and driven shaft, is the primary structure part of annular blackboard, can rotate automatically under the drive of motor.The similar conveyer belt of blackboard surface is white soft materials, is full of iron powder in the blackboard surface interlayer.When writing with magnetic pen, iron powder is attracted, and shows writing.Driving shaft is an iron and steel material quality, shows magnetic under the energising situation, iron powder can be attracted to go back, and writing disappears, and realizes the function of wiping automatically.The blackboard internal voids is equipped with the iron block that energising shows magnetic, similar blackboard eraser shape size.Under the blackboard superficial layer, piezoelectric inductor is housed.After the energising, under the pressure of blackboard surface blackboard eraser, because the piezoelectric inductor effect, inner blackboard eraser moves with outside blackboard eraser, and attracts iron powder, realizes erase feature.The internal black blackboard eraser is by motor-operated, can be free to slide on horizontal rail, and horizontal rail invests on two vertical tracks, can move up and down.Under the blackboard surface, has support plate, so that the intensity of writing to be provided.Control button is housed on the support, and the control blackboard rotates, whether wipes unlatching automatically.And the external application blackboard eraser plays identical control action also as remote controller.Special-purpose magnetic pen attracts iron powder, shows writing.

The beneficial effects of the utility model are, rotating annular blackboard face has increased the usable floor area of blackboard, outside blackboard eraser and internal black blackboard eraser that utilization matches are realized automatic erase feature, and have stopped the use of chalk, and the environmental pollution that has not had chalk dust to cause reaches health effects; And can use the blackboard of white soft materials as the projecting apparatus curtain.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is a left view of the present utility model;

Fig. 3 is a vertical view of the present utility model;

Fig. 4 is the structure chart on blackboard of the present utility model plane;

Fig. 5 is a blackboard front surface sectional side elevation of the present utility model;

Wherein, 1. driving shaft, 2. gear, 3. hinge, 4. blackboard surface, 5. blackboard outside framework, 6. internal black blackboard eraser, 7. driven shaft, 8. support plate, 9. piezoelectric inductor, 10. motor, 11. horizontal rail, 12. vertical tracks.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified:

As shown in Figure 1, driving shaft 1, driven shaft 7 all are fixed on the blackboard outside framework 5, and gear 2 is an one with driving shaft 1, through hinge 3 driving shaft 1 are connected with driven shaft 7, realize the function of blackboard surface 4 rotations under the effect of motor 10, as shown in Figure 2.Drive driving shaft work at motor 10, under the situation that driving shaft 1 is also switched on, the writing on the blackboard surface 4 disappears.Blackboard internal black blackboard eraser 6 can be free to slide on horizontal rail 11.Horizontal rail 11 invests again on the vertical track 12, under motor 10 effects, can move up and down.Horizontal rail 11 and vertical track 12 actings in conjunction, the position of location blackboard internal black blackboard eraser 6, as shown in Figure 3.

In Fig. 4, blackboard surface 4 is made up of little sound of laughing enclosure space one by one, all is flooded with iron powder in each little space.Blackboard surface 4 is white materials, can be directly as the projecting apparatus curtain.

In Fig. 5, write required hardness for providing, blackboard surface 4 underlay support plates 8.In the middle of blackboard surface 4 and support plate 8 is piezoelectric inductor 9, and its effect is according to outside blackboard eraser position, internal black blackboard eraser 6 positions, location.Giving under the blackboard internal black blackboard eraser 6 energising situations, it just can wipe writing on the blackboard surface 4.

In addition, the external application blackboard eraser also is a remote controller, can control the automatic erase feature of the rotation of blackboard surface 4 and driving shaft 1, blackboard internal black blackboard eraser 6.This utility model blackboard also will add special pens---magnetic pen, attracts iron powder, shows writing.

Claims

1. A rotary blackboard is characterized in that it comprises an annular blackboard surface, and the annular blackboard surface is enclosed within a parallel driving shaft and a driven shaft, and the driving shaft and the driven shaft are fixed on the blackboard outer frame; the driving shaft It is connected with the motor; at least one vertical track is fixed on the outer frame of the blackboard, the vertical track is provided with a moving horizontal track, and the horizontal track is provided with a sliding erasing device.

2. A rotary blackboard according to claim 1, wherein gears are provided at both ends of the driving shaft, and the gears are connected to the driven shaft through hinges.

3. A kind of rotary blackboard as claimed in claim 1, characterized in that, said erasing device comprises an internal blackboard eraser connected with a motor, and the internal blackboard eraser cooperates with the external blackboard eraser through a piezoelectric sensor; The piezoelectric sensor is located between the blackboard surface and the support plate.

4. A rotary blackboard as claimed in claim 2, characterized in that, the internal blackboard eraser is an electrified magnetic iron block placed inside the blackboard.