CN2850945Y

CN2850945Y - Multi-functional electric blackboard

Info

Publication number: CN2850945Y
Application number: CN 200520124279
Authority: CN
Inventors: 李长海
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-17
Filing date: 2005-11-17
Publication date: 2006-12-27
Anticipated expiration: 2015-11-17

Abstract

The utility model discloses a multifunctional electric blackboard, which comprises a bracket, wherein a first blackboard and a second blackboard are installed on the front and the back parts inside the bracket in parallel, the upper part of the bracket is provided with a transmission shaft, the transmission shaft is provided with a transmission wheel, the transmission wheel is provided with a transmission belt, one end of the transmission belt is connected with the first blackboard, the other end of the transmission belt is connected with the second blackboard and one end of the transmission shaft is connected with an electric motor. The utility model is provided with the electric motor, people can realize the replacement of the top and the bottom positions of the front and the back blackboards by controlling the positive and reverse rotation of the electric motor, teaching efficiency can be increased and labor intensity of teachers can be reduced. The utility model is provided with a hanging rod used for hanging drawing paper, and writing workload of the teachers can be reduced and teaching speed is accelerated. The utility model is provided with a push-pull-type blackboard eraser, the blackboard eraser with the structure can erase writing on a blackboard one time, repeated erasing like an original blackboard eraser is not needed, physical strength of the teachers can be effectively saved and the teachers can more fully make use of expensive time of a class.

Description

The multifunctional motor-driven blackboard

Technical field

The utility model relates to a kind of teaching aid, exactly is a kind of multifunctional motor-driven blackboard.

Background technology

At present, the employed blackboard of each universities and colleges all is manual push-pull structures, use very inconvenient the schoolmarm that the blackboard of this structure is petite for stature, muscle power is more weak, especially when the course derivation presentation process of lecturing loaded down with trivial details when tediously long, the teacher need spend the plenty of time and the physical space of a whole page of changing blackboard repeatedly, have a strong impact on teacher's teaching thinking, reduced the quality of giving lessons.

Summary of the invention

The purpose of this utility model has provided a kind of multifunctional motor-driven blackboard, and it can be according to teacher's teaching needs, and the upper-lower position of blackboard can be the teacher and saves a large amount of time and muscle power before and after changing automatically, improves the quality and the efficient of giving lessons effectively.

The purpose of this utility model is achieved through the following technical solutions: the multifunctional motor-driven blackboard, it has support, parallel installation first blackboard and second blackboard before and after in the support, power transmission shaft is installed on support top, drive is installed on the power transmission shaft, driving-belt is installed on the drive, an end of driving-belt is connected with first blackboard, the other end of driving-belt is connected with second blackboard, and an end of power transmission shaft is connected with motor.

For further realizing the purpose of this utility model, can also realize by the following technical solutions: support is connected and composed by upper left bearing, upper right bearing, lower-left bearing, bottom right bearing, left rail and right guide rail, between upper left bearing and lower-left bearing left rail is installed, right guide rail is installed between upper right bearing and bottom right bearing, offer first chute and second chute in the left rail, offer the 3rd chute and the 4th chute in the right guide rail, first blackboard is installed between first chute and the 3rd chute, second blackboard is installed between second chute and the 4th chute.First blackboard is connected and composed by blackboard frame, lid and clipboard, and an end of blackboard frame and lid is hinged, and the inboard of blackboard frame is provided with groove, and clipboard is installed in the groove.First fixed pulley and second fixed pulley are installed on the support, first backguy is installed on first fixed pulley, second backguy is installed on second fixed pulley, an end of first backguy and second backguy is connected with peg respectively.The other end of first backguy and second backguy is connected with the line roller, the line roller is connected with fixed head, driving lever is installed on the fixed head, driving lever and fixed head are hinged, coaxial installation ratchet on the line roller, ratchet contacts with driving lever, and driving lever is connected with an end of spring, the other end of spring is connected with fixed head, on the line roller handle is installed.Slide rail and glidepath are installed in the support bottom, offer upper hopper chute in the last slide rail, offer gliding groove in the glidepath, install crank in the upper hopper chute, and lower crank is installed in the gliding groove, an end of last crank and lower crank respectively with the two ends hinge of blackboard eraser.

Good effect of the present utility model is: it is equipped with motor, and people can be by the rotating of control motor, and the upper-lower position of blackboard is changed before and after realizing, can improve the efficient of giving lessons and reduce teacher's labour intensity.It is equipped with the peg that hangs drawing, can reduce the workload that the teacher writes and accelerate the speed of giving lessons, it is equipped with plug-type blackboard eraser, the blackboard eraser of this structure can once be removed the writing on the blackboard, need not needs wiping repeatedly as original blackboard eraser, can effectively save teacher's muscle power, make the teacher can utilize the quality time in classroom more fully.

Description of drawings

Fig. 1 is a structural representation of the present utility model; Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1; Fig. 3 is the structure for amplifying schematic diagram of the utility model first blackboard 7; Fig. 4 is the C-C sectional structure schematic diagram of Fig. 3; Fig. 5 is the B-B sectional structure schematic diagram of Fig. 1; Fig. 6 is the local structure for amplifying schematic diagram of the I of Fig. 2; Fig. 7 is the local structure for amplifying schematic diagram of the II of Fig. 1; Fig. 8 is the circuit theory diagrams of control motor 13.

The specific embodiment

The multifunctional motor-driven blackboard has support, parallel installation first blackboard 7 and second blackboard 18 before and after in the support, power transmission shaft 6 is installed on support top, on the power transmission shaft 6 drive is installed, driving-belt is installed on the drive, one end of driving-belt is connected with first blackboard 7, the other end of driving-belt is connected with second blackboard 18, one end of power transmission shaft 6 is connected with motor 13, one end of power transmission shaft 6 can be installed first belt pulley 12, first belt pulley 12 is connected with second belt pulley 14 by driving belt, and second belt pulley 14 is connected with motor 13, and also available diesel engine of motor 13 or gasoline engine equal power device substitute.First drive 4 and second drive 9 can be installed respectively on the power transmission shaft 6, first driving-belt 43 is installed on first drive 4, second driving-belt 44 is installed in second transmission 9, one end of first driving-belt 43 and second driving-belt 44 is connected with first blackboard 7, and the other end of first driving-belt 43 and second driving-belt 44 is connected with second blackboard 18.Support is connected and composed by upper left bearing 2, upper right bearing 11, lower-left bearing 21, bottom right bearing 16, left rail 1 and right guide rail 15,21 of upper left bearing 2 and lower-left bearings are installed left rail 1,16 of upper right bearing 11 and bottom right bearings are installed right guide rail 15, offer first chute 36 and second chute 35 in the left rail 1, offer the 3rd chute 29 and the 4th chute 30 in the right guide rail 15, first blackboard, 7, the second chutes 35 are installed for 29 of first chute 36 and the 3rd chutes and 30 of the 4th chutes are installed second blackboard 18.First blackboard 7 is connected and composed by blackboard frame 32, lid 34 and clipboard 38, and blackboard frame 32 is hinged with an end of lid 34, and the inboard of blackboard frame 32 is provided with groove 37, and clipboard 33 is installed in the groove 37.The shape and structure size of second blackboard 18 and first blackboard 7 all equates, also is to be connected and composed by blackboard frame, lid, clipboard, and an end of blackboard frame and lid is hinged, and the inboard of blackboard frame is provided with groove, and clipboard is installed in the groove.First fixed pulley 3 and second fixed pulley 10 are installed on the support, first pulley 3 can be installed on the upper left bearing 2, second fixed pulley 10 can be installed on the upper right bearing 11, first backguy 39 is installed on first fixed pulley 3, second backguy 38 is installed on second fixed pulley 10, one end of first backguy 39 and second backguy 38 is connected with peg 5 respectively, on the peg 5 clip 8 can be installed.The other end of first backguy 39 and second backguy 38 is connected with line roller 26, line roller 26 is connected with fixed head 42, fixed head 42 can be made one with support, driving lever 25 is installed on the fixed head 42, and driving lever 25 is hinged coaxial installation ratchet 22 on the line roller 26 with fixed head 42, ratchet 22 contacts with driving lever 25, driving lever 25 is connected with an end of spring 24, and the other end of spring 24 is connected with fixed head 42, and handle 23 is installed on the line roller 26.Slide rail 27 and glidepath 17 are installed in the support bottom, last slide rail 27 and glidepath 17 can be installed on the left rail 1 and right guide rail 15 of support, offer upper hopper chute 40 in the last slide rail 27, offer gliding groove 41 in the glidepath 17, install crank 28 in the upper hopper chute 40, lower cranks 20 be installed in the gliding groove 41, an end of last crank 28 and lower crank 20 respectively with the two ends hinge of blackboard eraser 19, last crank 28 and lower crank 20 both can move back and forth along upper hopper chute 40 and gliding groove 41, can relatively rotate again.On the right guide rail 15 control panel can be installed, button SB1, button SB2 and button SB3 are installed on the control panel.When the utility model is made, process each parts and assembling by above-mentioned requirements.On the support of the present utility model two position switch SQ1 and SQ2 can be installed respectively.When need promote first blackboard 7, can press button SB2, SB2 closing relay KM1 coil gets, three main contact closures of KM1, the closed realization of the normally open contact of KM1 self-locking, the normally closed interlock of KM1 is opened and is prevented that circuit for reversing from getting, motor 13 drives power transmission shaft 6 just to be changeed, and power transmission shaft 6 drives first drive 4 and second drive 9 rotates, and first driving-belt 43 and second driving-belt 44 promote first blackboard 7, reduce by second blackboard 18, when first blackboard 7 upwards touched position switch SQ1, SQ1 disconnected the KM1 coil losing electricity, and main contact and the normally open contact of KM1 are opened, the closed motor 13 of normally closed interlock stops operating, and first blackboard 7 promotes and finishes.When need promote second blackboard 18, can press button SB3, SB3 closing relay KM2 coil gets, three main contact closures of KM2 make motor 13 energisings, the closed realization of the normally open contact of KM2 self-locking, the normally closed interlock of KM2 is opened and is prevented that prograde circuit from getting, motor 13 drives power transmission shaft 6 counter-rotatings, power transmission shaft 6 drives first drive 4 and second drive 9 rotates, first driving-belt 43 and second driving-belt 44 promote second blackboard 18, reduce by first blackboard 7, when second blackboard 18 upwards touched position switch SQ2, SQ2 disconnected the KM2 coil losing electricity, and main contact and the normally open contact of KM2 are opened, the closed motor 13 of normally closed interlock stops operating, and second blackboard 18 promotes and finishes.Can drawing is fixing by clip 8 when need hang drawing, and turning handle 23 is by the height of line roller 26, first backguy 39 and second backguy, 38 control and regulation pegs 5, ratchet 22, driving lever 25 and spring 24 can play positioning action.When erasing the board, rotate the distance of first crank 28, second crank, 20 adjustment blackboard erasers 19 and first blackboard 7 or second blackboard 18 earlier; Spur blackboard eraser 19 again and move to the left or to the right, first crank 28 and second crank 20 move along first chute 40 and second chute 41 respectively.

Technical scheme described in the utility model is not restricted in the scope of embodiment described in the utility model.The utility model not technology contents of detailed description is known technology.

Claims

1, multifunctional motor-driven blackboard, it has support, parallel installation first blackboard (7) and second blackboard (18) before and after in the support, it is characterized in that: power transmission shaft (6) is installed on support top, power transmission shaft (6) is gone up drive is installed, and driving-belt is installed on the drive, and an end of driving-belt is connected with first blackboard (7), the other end of driving-belt is connected with second blackboard (18), and an end of power transmission shaft (6) is connected with motor (13).

2, multifunctional motor-driven blackboard according to claim 1, it is characterized in that: support is by upper left bearing (2), upper right bearing (11), lower-left bearing (21), bottom right bearing (16), left rail (1) and right guide rail (15) connect and compose, between upper left bearing (2) and lower-left bearing (21) left rail (1) is installed, right guide rail (15) is installed between upper right bearing (11) and bottom right bearing (16), offer first chute (36) and second chute (35) in the left rail (1), offer the 3rd chute (29) and the 4th chute (30) in the right guide rail (15), first blackboard (7) is installed between first chute (36) and the 3rd chute (29), second blackboard (18) is installed between second chute (35) and the 4th chute (30).

3, multifunctional motor-driven blackboard according to claim 1 and 2, it is characterized in that: first blackboard (7) is connected and composed by blackboard frame (32), lid (34) and clipboard (38), blackboard frame (32) is hinged with an end of lid (34), the inboard of blackboard frame (32) is provided with groove (37), and clipboard (33) is installed in the groove (37).

4, multifunctional motor-driven blackboard according to claim 1 and 2, it is characterized in that: first fixed pulley (3) and second fixed pulley (10) are installed on the support, first fixed pulley (3) is gone up first backguy (39) is installed, second fixed pulley (10) is gone up second backguy (38) is installed, and an end of first backguy (39) and second backguy (38) is connected with peg (5) respectively.

5, multifunctional motor-driven blackboard according to claim 4, it is characterized in that: the other end of first backguy (39) and second backguy (38) is connected with line roller (26), line roller (26) is connected with fixed head (42), fixed head (42) is gone up driving lever (25) is installed, driving lever (25) is hinged with fixed head (42), line roller (26) is gone up coaxial installation ratchet (22), ratchet (22) contacts with driving lever (25), driving lever (25) is connected with an end of spring (24), the other end of spring (24) is connected with fixed head (42), and line roller (26) is gone up handle (23) is installed.

6, multifunctional motor-driven blackboard according to claim 1 and 2, it is characterized in that: slide rail (27) and glidepath (17) are installed in the support bottom, offer upper hopper chute (40) in the last slide rail (27), offer gliding groove (41) in the glidepath (17), install crank (28) in the upper hopper chute (40), lower crank (20) is installed in the gliding groove (41), an end of last crank (28) and lower crank (20) respectively with the two ends hinge of blackboard eraser (19).