CN2732494Y

CN2732494Y - Electric writing blackboard

Info

Publication number: CN2732494Y
Application number: CN 200420035852
Authority: CN
Inventors: 高剑峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-14
Filing date: 2004-05-14
Publication date: 2005-10-12
Anticipated expiration: 2014-05-14

Abstract

An electric writing blackboard of the utility model, which is used as the teaching device, is composed of a bay 15. A drive roller 3 and a driven roller 5 are respectively positioned on the upper part and the lower part through a relative cradle 20. The dynamic axis of an electric motor 1 is connected with one end of the roller shaft of the drive roller 3 through the clutch 2. Two or more than two closed loop tensioning devices 7 are positioned between the drive roller 3 and the driven roller 5 and the upper end and the lower end of each closed loop tensioning device are respectively coiled in the roll shaft of the drive roller 3 and the driven roller 5. A support bracket board 14 is positioned on the closed loop tensioning device 7. A closed loop writing board 4 is coiled on the drive roller 3 and the driven roller 5. On the lower end of the driven roller 5, a cleaning dust absorption device 21 which cleans the writing board 4 is arranged. The utility model is characterized in that the writing board can automatically circulate up and down, clean the writing trace on the writing board automatically and sucks the writing dust automatically.

Description

Electronic writing blackboard

Technical field

The utility model relates to a kind of teaching aid, further is meant writing blackboard.

Background technology

For convenience of teaching writing, people have designed some writing blackboards, they all have convenient and the reusable characteristics of writing, its weak point be can not be by human visual conventional and usually the writing function requirement move up or down writing blackboard, can not clean the clipboard face automatically and environment is caused dust pollution.

The utility model content

The technical problems to be solved in the utility model is, the defective at prior art exists designs a kind of electronic writing blackboard, the mobile clipboard face that can circulate up or down automatically, and can clean the clipboard face automatically and dust is write in absorption.

Technical solution of the present utility model is, described electronic writing blackboard organic frame, the upper and lower of frame is separately installed with horizontal drive roll and driven voller through corresponding supporting base, the line shaft of motor connects through roll shaft one end of shaft coupling with described drive roll, its design feature is, two or more closed loop tensioning apparatus be arranged between described drive roll and the driven voller and each closed loop tensioning apparatus on, following two ends install around respectively on the roll shaft of described drive roll and driven voller, support plate is installed on the described closed loop tensioning apparatus, the closed loop clipboard installs around on described drive roll and driven voller, is provided with the cleaning dust absorption mechanism of cleaning clipboard below described driven voller.

Below make and further specifying.

Operation principle of the present utility model is, motor 1 drives drive roll 3 and rotates, according to line shaft just or counter-rotating make that clipboard is upper and lower to be moved, back and forth operation, when it ran to cleaning dust absorption mechanism 21, the chalk written handwriting was removed by brush plate 6 and cleaning roller 12, and dust is inhaled in the dust catcher 19.

The beneficial effects of the utility model are, as a kind of electronic writing blackboard, it have the upper and lower mobile clipboard face that can circulate automatically, automatically clean clipboard face written trace, automatically absorb and write characteristics of dust, can be widely used in school and other teaching and chalk and write and demonstrate the place.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the band broken section of a kind of embodiment;

Fig. 2 be among Fig. 1 A-A to sectional structure chart;

Fig. 3 is a B position amplification assumption diagram among Fig. 2

In the accompanying drawings:

The 1-motor, the 2-shaft coupling,

The 3-drive roll, 4-closed loop clipboard,

The 5-driven voller, the 6-brush plate,

7-closed loop tensioning apparatus, 8-dust suction bucket,

The 9-base, 10-carrier gear case,

The scalable flexible pipe of 11-, the 12-cleaning roller,

The 13-spring, the 14-support plate,

The 15-frame, 16-installs screw,

The 17-reversing switch, the 18-power switch,

The 19-dust catcher, the 20-supporting base,

21-cleaning dust absorption mechanism.

The specific embodiment

Referring to Fig. 1 and Fig. 2, the utility model organic frame 15, the upper and lower of this frame 15 is separately installed with horizontal drive roll 3 and driven voller 5 through corresponding supporting base 20, the line shaft of motor 1 connects through roll shaft one end of shaft coupling 2 with described drive roll 3, its design feature is, two or more (for example two to five, or more) closed loop tensioning apparatus 7 be arranged between described drive roll 3 and the driven voller 5 and each closed loop tensioning apparatus 7 on, following two ends install around respectively on the roll shaft of described drive roll 3 and driven voller 5, support plate 14 is installed on the described closed loop tensioning apparatus 7, closed loop clipboard 4 installs around on described drive roll 3 and driven voller 5, is provided with the cleaning dust absorption mechanism 21 of cleaning closed loop clipboard 4 below described driven voller 5.

A kind of example structure of described cleaning dust absorption mechanism 21 is (referring to Fig. 2 and Fig. 3), be contained in the base 9 of frame 15 bottoms and be provided with dust suction bucket 8, the other end of the dust mouth of these dust suction bucket 8 bottoms this scalable flexible pipe 11 with the end connection of scalable flexible pipe 11 is communicated with the suction port of dust catcher 19, fixedly connected and top has the brush plate 6 of bristle and air suction opening to be installed on the base 9 and patches mutually with the both sides gathering sill with the lead that spring 13 is equipped with at top in this base 9 with dust suction bucket 8 upper port, and described brush plate 6 be positioned at driven voller 5 and be installed in parallel in these driven voller 5 one sides cleaning roller 12 the bottom and bristle on it touches closed loop clipboard 4 and cleaning roller 12, the roll shaft end of this cleaning roller 12 and the respective rollers axle head of driven voller 5 are equipped with carrier gear case 10, drive cleaning roller 12 by it and rotate.

Described closed loop tensioning apparatus 7 can adopt the prior art structure, as the extensible canopy that rate of tension is regulated butter cylinder and bolt is housed; Closed loop tensioning apparatus 7 of the present utility model is fixed, and it does not rotate with drive roll 3.

Side (left side as shown in Figure 1) in frame 15 is provided with the power switch 18 of connecting motor 1 and dust catcher 19 working powers, and motor 1 rotates reversing switch 17.

Design of the present utility model and operation principle are (referring to Fig. 1 to 3), connect power supply, motor 1 drives drive roll 3 and rotates, forward or reverse according to motor 1 line shaft moves up or down the front (writing surface) of described closed loop clipboard 4, because this clipboard 4 is the closed loop structure, it can do circulating reciprocal operation, when it runs to cleaning dust absorption mechanism 21 screw 16 is installed, reversing switch 17, power switch 18, dust catcher 19, supporting base 20, during cleaning dust absorption mechanism 21 positions, the chalk written handwriting on it is removed by bristle on the brush plate 6 and cleaning roller 12, and dust is inhaled in the dust suction bucket 8 and final the suction in the dust catcher 19.When described closed loop clipboard 4 moved up, the clipboard face obtained upgrading, and current clipboard is demonstrated again with the written contents that is no less than a blackboard height when moving down.

According to the electronic writing blackboard of the utility model of Fig. 1 to Fig. 3 and said structure, 3.6 meters of integral width, 1.4 meters of the distances between drive roll 3 and the driven voller 5 adopt steel band or rubber strip and will spray blackboard paint after the surperficial frosted alligatoring.

Claims

1, a kind of electronic writing blackboard, organic frame (15), the upper and lower of this frame (15) is separately installed with horizontal drive roll (3) and driven voller (5) through corresponding supporting base 20, the line shaft of motor (1) connects through roll shaft one end of shaft coupling (2) with described drive roll (3), it is characterized in that, two or more closed loop tensioning apparatus (7) be arranged between described drive roll (3) and the driven voller (5) and each closed loop tensioning apparatus (7) on, following two ends install around respectively on the roll shaft of described drive roll (3) and driven voller (5), support plate (14) is installed on the described closed loop tensioning apparatus (7), closed loop clipboard (4) installs around on described drive roll (3) and driven voller (5), is provided with the cleaning dust absorption mechanism (21) of cleaning clipboard (4) in described driven voller (5) below.

2, electronic writing blackboard according to claim 1, it is characterized in that, the structure of described cleaning dust absorption mechanism (21) is, be contained in the base (9) of frame (15) bottom and be provided with dust suction bucket (8), the suction port of the dust mouth of this dust suction bucket (8) bottom same dust catcher of the other end (19) of this scalable flexible pipe (11) with the end connection of scalable flexible pipe (11) is communicated with, fixedly connected and top has the brush plate (6) of bristle and air suction opening to be installed in that base (9) is gone up and patches mutually with the both sides gathering sill with the lead that spring (13) is equipped with at top in this base (9) with dust suction bucket (8) upper port, and described brush plate (6) be positioned at driven voller (5) and be installed in parallel in these driven voller (5) one sides cleaning roller (12) the bottom and bristle on it touches clipboard (4) and cleaning roller (12), the respective rollers axle head of roll shaft end of this cleaning roller (12) and driven voller (5) is equipped with carrier gear case (10).