CN201659800U - Multifunctional rolling type automatic blackboard - Google Patents

Abstract

The utility model discloses an automatic blackboard of multi-functional roll formula, including frame, roll curtain mechanism, wiping mechanism, drawing line mechanism. The utility model utilizes the transmission mode of the motor to rotate the annular plate surface left and right, which is convenient for students to read and memorize, if not memorized, the annular plate surface can be turned back to be read again, and the annular plate surface can also be used as the screen of the projector; meanwhile, the strip-shaped eraser swings back and forth in a transmission mode through the motor to be rubbed for deletion, the white board pen does not generate dust, the environment is clean, the white board pen is beneficial to health, handwriting is automatically erased, and the white board pen saves time and labor and is safe; the actual used board surface is 2 times of the visible area, the continuous writing time is long, and the blackboard is not required to be always erased; the multifunctional music box has the functions of storage, music playing and time display, and can draw straight lines and circles with the line drawing ruler.

Description

Multifunctional scrolling automatic blackboard

technical field

The utility model relates to a teaching tool, in particular to a multifunctional rolling automatic blackboard with a ruler for drawing lines.

Background technique

The blackboard that existing teaching is used is the blackboard that materials such as wooden or frosted glass or iron porcelain are made, and writes or draws on the blackboard with chalk, because dust flies up and pollutes the environment, long-term contact chalk dust can have adverse effects on the health of teachers and students, and chalk is easy to It is difficult to write on the blackboard with chalk after anti-tide, and the handwriting is not clear. It is a laborious task to write with chalk and wipe the blackboard with the blackboard, and because the pupils cannot reach the blackboard, they often use stools to wipe the blackboard. Handwriting, easy to cause falls, is very unsafe, and it is difficult for short people to wipe the blackboard. Moreover, the writing area of the blackboard is relatively limited. In order to expand the area of the writing surface, some people have proposed a more advanced method of overlapping two boards and moving up and down, and using them alternately. Compared with the traditional blackboard, the writing area is increased, but the blackboard layer cannot be replaced at any time according to the needs of teachers. , Wiping the blackboard is labor-intensive, and the operation is not very flexible. In addition, most of the commonly used line-drawing tools on blackboards currently use ordinary meter rulers and triangular boards. It is more difficult for the user to grasp the ordinary drawing tools with one hand, and it is easy to fall off and cause damage. In order to change this situation, the designer proposed a simple structure, cheap price, twice the area of the traditional blackboard, and the writing area can be increased at any time according to the need, with storage function, and with A multifunctional scrolling automatic blackboard for drawing line rulers.

Contents of the invention

The purpose of this utility model is to provide a kind of multifunctional rolling type automatic blackboard, it can increase writing area at any time according to needs, has storage function, multifunctional rolling type automatic blackboard with line drawing ruler.

In order to solve the above problems, the technical solution of the utility model is: a multifunctional rolling automatic blackboard, including a frame, a rolling curtain mechanism, a wiping mechanism, and a line drawing mechanism. The frame is a rectangular frame made of light angle steel or stainless steel plate. Its lower part is equipped with electronic player, electronic clock, control switch, and its right side is fixed pen container, and electronic player is a ready-made player with its own speaker. There are two kinds of USB ports and power switches on the electronic player. The electricity is directly connected to the main switch of the power supply, and the player switch is turned on when the music class or other audio courses are required, and the USB flash drive is inserted into the USB flash drive interface to listen to the lecture directly; the electronic clock is a ready-made clock that displays the year, month, day and time, and the electronic clock The input power is directly connected to the main power switch, and teachers, students and students can grasp the progress of lectures and learning through the time process. The control switch includes a main power switch, a curtain switch and a wiping switch. The main power switch is a switch that provides external 220V power to the blackboard electrical equipment. The curtain switch is a steering switch. The curtain switch is connected to the main power switch and the curtain motor through wires. By pressing the two ends of the curtain switch, the curtain can be rotated forward and backward, and the side with the full screen can be transferred to the back of the blackboard for storage through the curtain switch. When the two classes are about to end and you need to review it, you can switch back to the stored screen for a brief explanation, or If the students didn't write it down, they can turn back and look again; the wiping switch is also a steering switch, the wiping switch is connected with the main power switch and the wiping motor through wires, and the wiping switch and the wiping motor are respectively connected in series on the forward and reverse circuits. A normally closed button, press and hold the left end of the wiping switch to make the motor turn forward to press the felt slats against the screen, and at the same time press the rocker of the felt slats to press the normally closed button to cut off the power of the motor, and the felt slats are in the state of pressing the screen. When the curtain rotates, the handwriting on the screen can be wiped. Press and hold the right end of the wipe switch to make the motor reverse the felt slats and leave the screen. At the same time, the rocker of the felt slats presses the normally closed button to cut off the power of the motor, and the felt slats are on the separate opening surface. At this time, the curtain rotation will not wipe the handwriting on the screen; four or more pen holders are welded or pasted obliquely on the right side of the frame, and whiteboard markers of various colors can be put in, and teachers can choose and use them according to needs.

Rolling curtain mechanism includes curtain, left and right rollers, reducer, and curtain motor. The curtain is made of rubber belt, plastic belt or thin metal belt, and the curtain is wrapped around two parallel rollers. The distance between the rollers can be adjusted. Bolt adjustment, the north side of the writing surface of the curtain is close to the liner fixed on the frame, and the liner is kept on the curtain when writing, so that it will not swing back and forth or the curtain surface will be recessed, which is not conducive to writing. The left and right rollers are fixed on the frame through bearings, and the right roller The reducer is connected with the screen motor through the coupling, the reducer and the screen motor are fixed on the frame, the bearing of the left roller bears up and down the adjustment screw, and the screw is fixed on the frame through the support rod On, screw on the bolt on the screw rod, and the bolt pushes the screw rod to adjust the distance by the support rod.

The wiping mechanism includes a wiping motor, a chain transmission mechanism, a screw rod, and a felt strip. The wiping motor is fixed on the frame. The chain transmission mechanism is composed of a driving sprocket, a chain, and a driven sprocket. The driving sprocket is set on the main shaft of the wiping motor. The driving sprocket and the driven sprocket are connected by a chain, the driven sprocket is set on the screw rod, the screw rod is fixed on the frame through the bearing, the bolt on the screw rod is connected with the grooved rod sheave, and the grooved rod is connected by bolts or The welding form is fixed in the middle of the felt strip. A push rod is welded on the bolt. The push rod engages with the groove of the groove rod to push the groove rod to swing back and forth. The upper and lower ends of the felt strip are connected by bolts or welded. The rocker is connected to the frame through the pin shaft. Two normally closed buttons are fixed on the frame at the front and rear of the lower rocker. The push rod pushes the groove bar to swing forward. The normally closed button at the top cuts off the power to the motor, the felt slats are in the state of pressing the curtain surface, the push rod pushes the groove bar to swing backwards, and when the felt slats separate from the screen, the rocker withstands the normally closed button at the rear to make the motor When the power is off, the felt slats are in the state of separating the openings.

The line-drawing mechanism is composed of a line-drawing ruler on the left side of the frame, a telescopic rod, and a track, clips, and scales on the right side of the frame. The line-drawing ruler is a bow-shaped ruler with scales on both sides. Because of its bow-shaped design, it is beneficial to draw parallel lines on the side of the ruler. The drawn line will not be deleted. The middle of the drawn line ruler is connected with one end of the telescopic rod, and the magnet is pasted at the joint, which is good for being sucked by the liner, which is good for drawing a circle, and the center point is not easy to shift. The other end of the telescopic rod passes through the pin The shaft is connected with the frame, the telescopic rod swings freely around the pin shaft and adjusts the line ruler to the position where the line needs to be drawn, and the line ruler can be used to draw straight lines and circles; the track is a cylindrical track, and the upper and lower ends are fixed on the frame , multiple pen clips are set on the track, and the position of the pen clip can be adjusted freely according to the needs. In order to draw parallel lines with equal spacing, the scale line is engraved on the right side of the frame. , draw parallel horizontal lines or coordinate lines when turning the screen.

When working, turn on the main switch, press and hold the curtain switch to rotate the curtain after the screen is full of writing, turn the side of the full screen to the back of the blackboard for storage, and turn it back to review at any time when necessary. When wiping is required, press and hold the left end of the wiping mechanism switch to make the motor rotate forward to press the felt slats to press the screen. At this time, press and hold the curtain switch to rotate the curtain to wipe the writing on the screen. When there is no need to wipe, press and hold the right end of the switch of the wiping mechanism to make the motor reverse the felt slats and leave the screen. At this time, press and hold the curtain switch to rotate the curtain without wiping the handwriting on the screen. When you need to draw a line or draw a picture, pick up the ruler and stretch it to any position on the blackboard to draw a line or draw a picture. When you need to draw a parallel horizontal line or a coordinate line, clip the pen on the clip to align with the scale and turn the curtain. . Turn on the player switch and insert the USB flash drive into the USB flash drive interface to listen to the lecture directly when taking music class or other audio classes.

The utility model has the advantages of:

A multi-functional scrolling automatic blackboard, which uses a motor drive to rotate the circular board surface left and right, which is convenient for students to read and memorize. If there is something that has not been written down, it can be turned back to review, and the board surface can also be used as a projector screen. ;At the same time, use the motor drive mode to remove the front and back swing friction of the strip eraser, no dust will appear with the whiteboard pen, clean the environment, benefit the health, and automatically erase the handwriting, saving time and effort, and safe; the actual use of the board is quite visible. It can write continuously for a long time without always wiping the blackboard; it has storage function, music playback function, time display function, and a multi-functional scrolling automatic blackboard with a line ruler.

Description of drawings:

Fig. 1 is a schematic front view of a multifunctional rolling automatic blackboard.

Fig. 2 is a schematic diagram of the back structure of the multifunctional rolling automatic blackboard.

Figure 3 is a structural diagram of the wiping mechanism

Fig. 4 is a circuit diagram of the utility model.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model includes a frame (1), a rolling curtain mechanism, a wiping mechanism, and a line drawing mechanism, and the frame (1) is a rectangular frame made of light angle steel or stainless steel plate (1), electronic player (2), electronic clock and watch (5), control switch are equipped with in its bottom, and pen container (9) is fixed on its right side, and electronic player (2) is a ready-made player (2) with loudspeaker ), there are two USB flash drive interfaces (4) and a power switch (3) on the electronic player (2), the input power of the player (2) is directly connected to the main power switch (8), and music lessons or other audio Turn on the player (2) switch (3) during the course and insert the USB flash drive into the USB flash drive interface (4) to directly listen to the lecture; the electronic clock (5) is a ready-made clock (5) that shows the year, month, day and time, and the electronic clock ( 5) The input power is directly connected to the main power switch (8), and teachers, students and students can grasp the progress of lectures and learning through the time course. The control switch includes a main power switch (8), a curtain switch (6) and a wiping switch (7). Switch, the curtain switch (6) is connected with the main power switch (8) and the curtain motor (21) through electric wires, and the curtain (22) can be rotated forward and backward by pressing the two ends of the curtain switch (6) respectively, and the screen can be filled with (22) one side is to allow it to be forwarded to the back of the blackboard by the curtain switch (6) for storage, and to turn back to the stored screen for a brief explanation when two classes are about to end and need to review, or if the student does not write it down. Can also turn back and look again; Wiping switch (7) is also a steering switch, and wiping switch (7) is connected with main power switch (8) and wiping motor (23) by electric wire, wiping switch (7) and wiping motor (23) Two normally closed buttons (30, 30') are connected in series respectively on the forward and reverse circuits, and the left end of the wiping switch (7) is pressed to make the motor (23) forwardly rotate the felt strip (28) to press the curtain surface (22), Simultaneously, the rocking bar (29) of the felt strip (28) presses the normally closed button (30 ') to power off the motor (23), and the felt strip (28) is in the state of pressing the curtain surface (22), and now the curtain ( 22) Rotate to wipe the writing on the screen (22), press and hold the right end of the wipe switch (7) to make the motor (23) reverse the felt strip (28) to leave the curtain (22), and at the same time the felt strip (28) The rocking bar (29) presses the normally closed button (30) to cut off the power of the motor (23), and the felt strip (28) is in the state of separating the opening surface (22). ) on the handwriting; four or more pen holders (9) are obliquely welded or pasted on the right side of the frame (1), whiteboard markers of various colors can be put in, and the teacher selects and uses according to needs.

Rolling curtain mechanism comprises curtain (22), left and right rollers (16), speed reducer (19), curtain motor (21), and curtain (22) is to make with rubber band or plastic band or thin metal belt annular collage, and curtain ( 22) Surrounded on two parallel rollers (16), the distance between the rollers (16) can be adjusted by adjusting bolts (34), and the north side of the writing surface of the curtain (22) is close to the lining plate (39) ), this backing plate (39) will not swing back and forth when writing on the curtain (22) or the curtain surface will be sunken, which is not conducive to writing. The left and right rollers (16) are fixed on the frame (1) by bearings (17). The drum (16) is connected with the reducer (19) through the coupling (18), the reducer (19) is connected with the curtain motor (21) through the coupling (20), and the reducer (19) and the curtain motor (21) All are fixed on the frame (1). The curtain motor (21) drives the reducer (19) to rotate through the coupling (20), the reducer (19) drives the right roller (16) to rotate through the coupling (18), and the right roller (16) passes through the curtain (22) Drive the left cylinder (16) to rotate. The upper and lower bearings (17) of the left drum (16) withstand the adjustment screw mandrel (32), and the screw mandrel (32) is fixed on the frame (1) by the support rod (33), and the screw mandrel (32) is screwed on the bolt ( 34), the bolt (34) promotes the screw mandrel (32) to adjust the distance by the support rod (33).

Wiping mechanism comprises wiping motor (23), chain transmission mechanism, screw mandrel (37), felt strip plate (28), and wiping motor (23) is fixed on the frame (1), and chain transmission mechanism is composed of driving sprocket (24), Chain (25), driven sprocket (26) is made up of, and driving sprocket (24) is sleeved on the wiping motor (23) main shaft, and driving sprocket (24) and driven sprocket (26) are connected by chain (25) , the driven sprocket (26) is set on the screw mandrel (37), and the screw mandrel (37) is fixed on the frame (1) through the bearing (38), and the bolt (36) on the screw mandrel (37) is connected with the grooved rod ( 27) Connection in grooved wheel form. When wiping the motor (23) to rotate, the driving sprocket (24) drives the driven sprocket (26) to rotate by the chain (25), and the driven sprocket (26) drives the screw mandrel (37) to rotate, and the screw mandrel (37) Turn the lower bolt (36) to move back and forth. The groove bar (27) is fixed in the middle of the felt strip (28) by bolt connection or welding, and a push rod (35) is welded on the bolt (36), and the groove of the push rod (35) and the groove rod (27) The engagement pushes the groove bar (127) to swing back and forth, and the upper and lower ends of the felt strip (28) are fixed with two rocking bars (29) by bolt connection or welding, and the rocking bar (29) is connected to the frame (1 ) live connection, the front and rear of the lower rocker (29) are fixed with two normally closed buttons (30, 30 ') on the frame (1), the push rod (35) pushes the groove bar (27) to swing forward, and the felt strip (28) While being close to the curtain surface (22), the rocker (29) withstands the normally closed button (30') at the front to power off the motor (23), and the felt strip (28) is in the position of pressing the curtain surface (22) state, the push rod (35) pushes the groove rod (27) to swing backward, the felt strip (28) separates the curtain surface (22), and at the same time the rocker (29) withstands the normally closed button (30) at the rear to make the motor (23) power failure, the felt strip plate (28) is in the state of separating the opening face (22).

The line-drawing mechanism is made up of the line-drawing ruler (15) on the left side of the frame (1), the telescopic rod (14) and the track (10) on the right side of the frame (1), clips (12), frame limit scales (11), and the line-drawing ruler (15) is the bow-shaped ruler that scale is arranged on both sides, owing to be the bow-shaped design, be beneficial to when drawing parallel lines, ruler edge can not cross out the line that has been drawn, draws the line ruler (15) middle and telescoping rod (14) one end is loosely connected , and the magnet attached to the connection is sucked by the liner (39), which is beneficial to drawing a circle and the center point is not easy to shift. 14) freely swing around the bearing pin (13) and arbitrarily adjust the line drawing ruler (15) to the position where the line needs to be drawn, and can draw straight lines and circles with the line drawing ruler (15): the track (10) is a cylindrical track (10 ), the upper and lower ends are fixed on the frame (1), a plurality of pen clips (12) are set on the track (10), and the positions of the pen clips (12) can be adjusted arbitrarily as required, in order to draw parallel line frames with equal line spacing ( 1) Engrave the scale line (11) on the right side, align the scale (11) and clamp the pen on the pen holder (12), the tip of the pen is in contact with the screen surface (22), and when the screen (22) is turned, draw parallel horizontal lines or coordinate line.

Claims (5)

1. A multifunctional rolling automatic blackboard, comprising a frame (1), a rolling curtain mechanism, a wiping mechanism, and a line drawing mechanism. 2. The multifunctional rolling type automatic blackboard according to claim 1 is characterized in that: said frame (1) is a rectangular frame (1) made of light angle steel or stainless steel plate, and an electronic player ( 2), electronic clock (5), control switch, its right side is fixed with pen holder (9), two kinds of USB flash drive interface (4) and power switch (3) are arranged on electronic player (2), the input of player (2) The electricity is directly connected to the main power switch (8), and the input electricity of the electronic clock (5) is directly connected to the main power switch (8). The control switch includes the main power switch (8), the curtain switch (6) and the wiping switch ( 7), the main power switch (8) is a switch that connects the external 220V to the blackboard electrical equipment, the curtain switch (6) is connected with the main power switch (8) and the curtain motor (21) through a wire, and the wipe switch (7) Connect with the main power switch (8) and the wiping motor (23) by electric wires, respectively connect two normally closed buttons (30, 30 ') in series on the forward and reverse circuits of the wiping switch (7) and the wiping motor (23); Weld or paste four or more pen holders (9) obliquely on the right side of the frame (1). 3. The multifunctional rolling type automatic blackboard according to claim 1, characterized in that: said rolling screen mechanism comprises a screen (22), a left and right roller (16), a speed reducer (19), a screen motor (21), Curtain (22) is to make with rubber band or plastic band or thin metal band ring collage, and curtain (22) is circled on two parallel cylinders (16), and the north side of curtain (22) writing surface is close to and fixed on frame ( 1), the left and right rollers (16) are fixed on the frame (1) through bearings (17), the right roller (16) is connected with the speed reducer (19) through the shaft coupling (18), and the speed reducer ( 19) Connect with the curtain motor (21) through the coupling (20), the speed reducer (19) and the curtain motor (21) are fixed on the frame (1), and the upper and lower bearings (17) of the left roller (16) go up and down Live and adjust the screw mandrel (32), the screw mandrel (32) is fixed on the frame (1) by the support rod (33), and the screw mandrel (32) is screwed on the bolt (34). 4. The multifunctional rolling type automatic blackboard according to claim 1, characterized in that: said wiping mechanism comprises a wiping motor (23), a chain transmission mechanism, a screw mandrel (37), a felt strip (28), and wiping Motor (23) is fixed on the frame (1), and chain transmission mechanism is made up of driving sprocket (24), chain (25), driven sprocket (26), and driving sprocket (24) is sleeved on wiping motor (23) On the main shaft, the driving sprocket (24) and the driven sprocket (26) are connected through a chain (25), the driven sprocket (26) is set on the screw rod (37), and the screw rod (37) passes through the bearing (38) Fixed on the frame (1), the bolt (36) on the screw rod (37) is connected with the grooved rod (27) in the form of a sheave, and the grooved rod (27) is fixed to the felt strip (28) by bolt connection or welding. In the middle, a push rod (35) is welded on the bolt (36), and the push rod (35) engages with the groove of the groove bar (27). Bar rocking bar (29), rocking bar (29) is connected with frame (1) by bearing pin (31), front and rear of lower rocking bar (29) are fixed two normally closed buttons (30, 30'). 5. The multifunctional rolling type automatic blackboard according to claim 1, characterized in that: said line drawing mechanism consists of a line drawing ruler (15) on the left side of the frame (1), telescopic rod (14) and frame (1) The track (10) on the right side, clamp (12), frame edge scale (11) is formed, draw line ruler (15) is the bow-shaped ruler that has scale on both sides, draw line ruler (15) middle and expansion rod (14) one end is loosely connected , and a magnet is pasted at the joint, and the other end of the telescopic rod (14) is articulated with the frame (1) through a pin shaft (13); the track (10) is a cylindrical track (10), and the upper and lower ends are fixed on the frame (1) , a plurality of pen clips (12) are set on the track (10), and a scale line (11) is engraved on the right side of the frame (1).

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