CN110171237B - A combined science special teaching drawing instrument used in classrooms - Google Patents

Abstract

The invention discloses a combined type science special teaching drawing instrument for a classroom, which comprises a long plate, the driving device comprises a lifting motor fixedly arranged on the bottom wall of the lifting chute, a screw rod rotationally connected with the top wall of the lifting chute is connected in the lifting motor, the screw rod is in threaded connection with a threaded block which is in sliding connection with the lifting chute, the clamping plate is firstly pulled upwards, then the clamping plate and the bottom plate are fixed on the chalk groove of the blackboard through the connecting spring, then the long plate is pushed, the long plate can be driven to move through the wheels, the device can be combined in different ways, the circle and the ellipse of equidimension not are drawn to the optional position on the blackboard, also can draw the straight line of different angles, compare in the big compasses that traditional blackboard was used, and this device is when drawing the circle, and the centre of a circle can not squint, and the diameter of circle also can not change, and the problem that traditional teaching instrument can't draw the ellipse has been overcome to this device simultaneously.

Description

A combined science special teaching drawing instrument used in classrooms

technical field

The invention relates to the field of education, in particular to a combined science-specific teaching drawing instrument used in classrooms.

Background technique

In the classroom, mathematics teachers often need to draw circles, straight lines, ellipses and other patterns for teaching. When drawing circles, the existing drawing instruments need the teacher to find a good position by hand, and then use a large compass to hand. Animation circle, but when drawing a circle with a compass, the center of the circle is not easy to cause the center of the circle to slide due to the sliding of the hand, and because these compasses are in use, the two rods are prone to slip, resulting in the diameter of the circle. At the same time, some existing drawing instruments are very difficult to draw ellipses.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combined science-specific teaching drawing instrument used in classrooms, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a combined type teaching drawing instrument for science, which is used in classrooms, comprising a long board, wherein the long board is provided with a lifting chute, and the lifting chute is provided with a driving device ;

The driving device includes a lift motor fixedly installed on the bottom wall of the lift chute, the lift motor is connected with a screw rod that is rotatably connected to the top wall of the lift chute, and the screw rod is threadedly connected to the lift chute. The threaded block is slidably connected to the lifting chute, a rotating motor is fixed on the right side of the threaded block, a motor shaft is connected to the rotating motor, and a rotating block is fixed on the motor shaft. The right side is provided with an open chute that opens to the right, the bottom wall of the open chute is provided with a block chute, and a conical block is slidably connected to the block chute, and the conical block is connected to the block chute. A clamping block spring is connected between the clamping block sliding grooves, a scale plate and an elliptical plate are slidably connected in the open sliding groove, and the conical clamping block is used to fix the scale plate and the elliptical plate;

The right side of the long board is provided with a T-shaped chute, the T-shaped chute is provided with a connecting device for fixing the long board and driving the long board to move back and forth, and the scale plate is provided with a A brush device for drawing circles and straight lines, the elliptical plate is provided with a compound device for drawing ellipses.

On the basis of the above technical solutions, the connecting device consists of a T-shaped slider, a connecting spring, a splint, an internal groove, a long sliding plate, a return spring, a rotating rod, a rotating block, a limiting block, an empty groove, an annular groove, a round head rod , a bottom plate, a bracket, an axle, and a wheel, the T-shaped sliding block is slidably connected with the T-shaped sliding groove, and the connecting spring is connected between the T-shaped sliding block and the T-shaped sliding groove, The splint is fixed on the right side of the T-shaped slider, the splint is provided with the inner groove with the opening downward, and the long sliding plate is slidably connected in the inner groove, and the long The return spring is symmetrically connected between the sliding plate and the inner groove, the top wall of the inner groove and the top surface of the splint are rotatably connected with the rotating rod, and the top side of the rotating rod is fixed There is the rotating block, the lower side of the rotating rod extends downward through the long sliding plate, and is rotatably connected with the upper and lower sides of the long sliding plate, and the limiting block is fixed on the bottom side of the rotating rod, so the The long slide plate is provided with the hollow groove, the inner wall of the hollow groove is provided with the annular groove, and the rotating rod is fixed in the hollow groove with the round-headed rod slidably connected with the annular groove , the right side of the long board is fixed with the bottom plate, the upper side of the bottom plate and the lower side of the long slide plate are respectively fixed with the brackets symmetrically left and right, and the four brackets are rotatably connected with The wheels are respectively fixed on the left and right sides of each of the wheel shafts.

On the basis of the above technical solution, the brush device is composed of a corresponding groove and a chalk groove, the corresponding groove is provided on the bottom surface of the scale plate, the corresponding groove can be slidably connected with the tapered block, and the scale The left and right sides of the board are provided with the chalk grooves for fixing the chalk.

On the basis of the above technical solutions, the composite device consists of an adjusting chute, an adjusting slider, a rectangular block, a fixed rod, a pulling block, a symmetrical spring, a clamping needle, a winding shaft, a chuck, a winding wheel, a rope, a traverse block, Friction pad, chalk block, installation block, limit block, thin rod, small block, and small spring. Corresponding groove, the adjusting sliding block is slidably connected to the adjusting sliding groove, the rectangular block is fixed on the right side of the adjusting block, and the fixing rod is fixed on the right side of the rectangular block , the bottom surface of the rectangular block is provided with the pulling block, the symmetrical spring is connected left and right between the pulling block and the rectangular block, and the top surface of the pulling block is fixed with the elliptical plate The clamping pin in contact with the corresponding groove in the oval plate is rotatably connected with the winding shaft on the right side of the elliptical plate, the chuck is fixed on the left side of the winding shaft, and the The winding wheel is fixed on the right side, the rope is wound on the winding wheel, the other end of the rope is fixedly connected with the fixing rod, and the traverse block is slidably connected to the rope. The friction pad that is slidably connected with the rope is fixed symmetrically up and down in the traverse block, and the chalk block is fixed on the right side of the traverse block, and the chalk block can fix the chalk, and the elliptical plate The mounting block is fixed on the right side of the mounting block, the limiting block is slidably connected to the mounting block, the thin rod is fixed on the bottom side of the limiting block, and the bottom side of the thin rod is fixed The small block is provided, the small spring is connected between the small block and the mounting block, and the limiting block can abut with the chuck.

On the basis of the above technical solution, the friction pad is made of rubber material, and has a relatively large frictional force with the rope.

Based on the above technical solution, the limiting block is made of magnet material.

Based on the above technical solutions, the left and right sides of the scale plate are provided with scales aligned with the corresponding grooves.

On the basis of the above technical solution, the rotating motor uses a low-speed motor, and the rotation speed is relatively slow.

To sum up, the beneficial effects of the present invention are: the device can draw circles and ellipses of different sizes at any position on the blackboard through different combinations, and can also draw straight lines of different angles. Compass, when the device draws a circle, the center of the circle will not be offset, and the diameter of the circle will not change. At the same time, the device overcomes the problem that traditional teaching instruments cannot draw ellipses, and can be more convenient for teaching in the classroom.

Description of drawings

In order to illustrate the embodiments of the invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the front view structure schematic diagram of a kind of combined type science special-purpose teaching drawing instrument used for classroom of the present invention as a whole and full section;

Fig. 2 is the partial enlarged view of A place in Fig. 1 of the present invention;

3 is a schematic side view of the installation of the brush device in FIG. 1 of the present invention;

4 is a schematic side view of the installation of the composite device in FIG. 1 of the present invention;

Fig. 5 is the partial enlarged view of B place in Fig. 4 of the present invention;

Fig. 6 is the partial enlarged view of C place in Fig. 4 of the present invention;

FIG. 7 is a left side view of FIG. 1 of the present invention.

Detailed ways

All features disclosed in this specification, or all disclosed steps in a method or process, may be combined in any way except mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), unless expressly stated otherwise, may be replaced by other equivalent or alternative features serving a similar purpose. That is, unless expressly stated otherwise, each feature is but one example of a series of equivalent or similar features.

Below in conjunction with Fig. 1-7, the present invention will be described in detail, for the convenience of description, the orientations mentioned below are now specified as follows: the up-down, left-right, front-rear directions mentioned below are consistent with the up-down, left-right, front-rear directions of the projection relationship of Fig. 1 itself.

Please refer to FIGS. 1-7 , an embodiment provided by the present invention: a combined science-specific teaching drawing instrument for classrooms, comprising a long board 21 , a lift chute 23 is provided in the long board 21 , and the The lift chute 23 is provided with a driving device 101 . The drive device 101 includes a lift motor 31 that is fixedly installed on the bottom wall of the lift chute 23 . The lift motor 31 is connected to rotate with the top wall of the lift chute 23 . The connected screw rod 22, the screw rod 22 is threadedly connected with a threaded block 24 that is slidably connected to the lifting chute 23, and a rotating motor 25 is fixed on the right side of the threaded block 24. The rotating motor 25 A motor shaft 26 is connected to the motor shaft 26, and a rotating block 73 is fixed on the motor shaft 26. The right side of the rotating block 73 is provided with an open chute 72 opening to the right, and the bottom wall of the open chute 72 is provided with an open chute 72. There is a block chute 29, a tapered block 28 is slidably connected to the block chute 29, and a block spring 30 is connected between the conical block 28 and the block chute 29, and the The scale plate 27 and the elliptical plate 50 are slidably connected in the opening chute 72 , the tapered block 28 is used to fix the scale plate 27 and the elliptical plate 50 , and the right side of the long plate 21 is provided with T-shaped chute 32, the T-shaped chute 32 is provided with a connecting device 102 for fixing the long board 21 and driving the long board 21 to move back and forth, and the scale plate 27 is provided with a circle and a straight line There is a brush device 103, the ellipse plate 50 is provided with a composite device 104 for drawing an ellipse.

In addition, in one embodiment, the connecting device 102 includes a T-shaped sliding block 34 slidably installed in the T-shaped sliding groove 32, and the T-shaped sliding block 34 is connected with the T-shaped sliding groove 32 There is a connecting spring 33, and a plywood 46 is fixed on the right side of the T-shaped slider 34. The plywood 46 is provided with an inner groove 40 with an opening downward, and a long sliding plate is slidably connected in the inner groove 40. 38. A return spring 39 is symmetrically connected between the long sliding plate 38 and the inner groove 40. The top wall of the inner groove 40 and the top surface of the splint 46 are rotatably connected with a rotating rod 74. A rotating block 42 is fixed on the top side of the rotating rod 74 . The lower side of the rotating rod 74 extends downward through the long sliding plate 38 and is rotatably connected with the upper and lower sides of the long sliding plate 38 . A limiting block 47 is fixed on the bottom side, an empty groove 43 is formed in the long sliding plate 38, an annular groove 45 is formed on the inner wall of the hollow groove 43, and the rotating rod 74 is fixed in the hollow groove 43 with a The circular groove 45 is slidably connected to the round head rod 41, the right side of the long plate 21 is fixed with a bottom plate 48, and the upper side of the bottom plate 48 and the lower side of the long slide plate 38 are respectively fixed symmetrically on the left and right sides. The brackets 37, four of the brackets 37 are rotatably connected with axles 35, and wheels 36 are respectively fixed on the left and right sides of each of the axles 35. The splint 46 is first pulled upward, and then the connecting spring 33 The splint 46 and the bottom plate 48 are fixed on the chalk groove of the blackboard, and then the long board 21 is pushed, and the long board 21 can be driven to move by the wheels 36. When it needs to be fixed and not moved, rotate the The rotating block 42 drives the rotating rod 74 , the round-end rod 41 and the limiting block 47 to rotate, and the round-end rod 41 rotates and drives the long sliding plate 38 to move upward, so that the long sliding plate 38 The upper wheel 36 moves upward, so that the restriction block 47 abuts the blackboard groove, thereby completing the fixing.

In addition, in one embodiment, the brush device 103 includes a corresponding groove 71 provided on the bottom surface of the scale plate 27, the corresponding groove 71 can be slidably connected with the tapered block 28, the scale plate 27 The left and right sides are provided with chalk grooves 49 for fixing chalk, the conical block 28 can be pulled down, so that the scale plate 27 can be inserted into the opening chute 72, and then the chalk groove can be adjusted 49 and the motor shaft 26, then release the tapered block 28, so that the tapered block 28 is snapped into the corresponding corresponding slot 71, and then the chalk is snapped into the chalk slot 49 , and then turn on the rotating motor 25 to drive the motor shaft 26 , the rotating block 73 and the scale plate 27 to rotate, thereby completing the circle drawing, and adjust the angle of the scale plate 27 through the motor shaft 26 , and then use a pen to draw straight lines with different angles along the top surface of the scale plate 27 .

In addition, in one embodiment, the composite device 104 includes an adjusting chute 54 provided in the elliptical plate 50, and another set of the corresponding grooves 71 is further provided on the bottom surface of the elliptical plate 50. An adjustment slider 75 is slidably connected to the chute 54 , a rectangular block 52 is fixed on the right side of the adjustment slider 75 , a fixing rod 53 is fixed on the right side of the rectangular block 52 , and the rectangular block 52 There is a pulling block 56 on the bottom surface of the oval plate 56, and a symmetrical spring 55 is symmetrically connected between the pulling block 56 and the rectangular block 52. The top surface of the pulling block 56 is fixed with all the The clamping pin 57 abutting against the corresponding groove 71, the winding shaft 63 is rotatably connected to the right side of the elliptical plate 50, the left side of the winding shaft 63 is fixed with a chuck 64, and the right side of the winding shaft 63 A winding wheel 62 is fixed, a rope 51 is wound on the winding wheel 62, the other end of the rope 51 is fixedly connected with the fixing rod 53, and a traverse block 60 is slidably connected to the rope 51. The friction pad 59 that is slidably connected with the rope 51 is fixed symmetrically up and down in the shifting block 60, and a chalk block 61 is fixed on the right side of the lateral shifting block 60. The chalk block 61 can fix the chalk, and the ellipse A mounting block 69 is fixed on the right side of the plate 50, and a limiting block 70 is slidably connected to the mounting block 69. A thin rod 68 is fixed on the bottom side of the limiting block 70, and the bottom side of the thin rod 68 is fixed. A small block 66 is fixed, and a small spring 67 is connected between the small block 66 and the mounting block 69 , the limit block 70 can abut with the chuck 64 , and the conical block can be locked 28 Pull down, insert the elliptical plate 50 into the rotating block 73, make the rightmost corresponding slot 71 align with the conical blocking block 28, and then release the conical blocking block 28 , and then pull down the small block 66, so as to drive the limit block 70 to move down through the thin rod 68, and then rotate the chuck 64 by hand, so that the winding wheel 62 releases the rope of the required length 51, then release the small block 66, then pull the pulling block 56 down, then pull the rectangular block 52 to the right to the desired point, then release the pulling block 56 to determine the fixing The position of the rod 53 and the winding wheel 62, then insert the chalk into the chalk block 61, then adjust the position of the chalk block 61 on the rope 51, then grasp the chalk block 61 by hand, then Make the rope taut, and then draw an ellipse around the winding shaft 63 and the fixing rod 53 .

In addition, in one embodiment, the friction pad 59 is made of rubber material, and has a large frictional force with the rope 51. Only when the traverse block 60 is pulled by hand, can the friction pad 59 be driven. Movement of the chalk block 61 .

In addition, in one embodiment, the restricting block 47 is made of a magnet material. When the restricting block 47 collides with the chalk groove, it will attract the chalk groove.

In addition, in one embodiment, the left and right sides of the scale plate 27 are provided with scales aligned with the corresponding grooves 71, so as to facilitate the adjustment of the diameter of the circle and the length of the straight line.

In addition, in one embodiment, the rotating motor 25 uses a low-speed motor, and the rotation speed is relatively slow, so that the chalk can be effectively prevented from breaking when drawing a circle.

When it is necessary to start drawing, first pull the splint 46 upward, then fix the splint 46 and the bottom plate 48 on the chalk slot of the blackboard through the connecting spring 33, and then push the longboard 21, and the longboard 21 can be driven by the wheels 36 to move. When it needs to be fixed and not moved, the rotating block 42 is rotated to drive the rotating rod 74, the round head rod 41 and the limiting block 47 to rotate, and the rotation of the round head rod 41 drives the long sliding plate 38 to move upward, so that the wheels 36 on the long sliding plate 38 move upward. Move up, so that the restriction block 47 is in contact with the blackboard slot, thereby completing the fixing. When it is necessary to draw a circle, first move the long board 21 to a suitable position, and then turn on the lifting motor 31, thereby driving the screw 22 to rotate, and then driving The threaded block 24 is raised to a suitable height, and then the scale plate 27 is inserted into the opening chute 72, then the distance between the chalk groove 49 and the motor shaft 26 can be adjusted, and then the tapered block 28 is released, so that the tapered block 28 is snapped into the corresponding corresponding slot 71, and then the chalk is snapped into the chalk slot 49, and then the rotating motor 25 is turned on, thereby driving the motor shaft 26, the rotating block 73 and the scale plate 27 to rotate, thereby completing the circle drawing, through the motor shaft 26 Adjust the angle of the scale plate 27, and then use a pen to draw straight lines with different angles along the top surface of the scale plate 27. When an ellipse needs to be drawn, pull down the tapered block 28 and insert the ellipse plate 50 into the rotating block 73 , so that the rightmost corresponding slot 71 is aligned with the conical block 28, then release the conical block 28, and then pull down the small block 66, thereby driving the limit block 70 to move down through the thin rod 68, and then Rotate the chuck 64 by hand, so that the winding wheel 62 releases the rope 51 of the required length, then release the small block 66, then pull the pulling block 56 down, then pull the rectangular block 52 to the right to the required point, and then release Pull the block 56 to determine the position of the fixing rod 53 and the winding wheel 62, then insert the chalk into the chalk block 61, then adjust the position of the chalk block 61 on the rope 51, then hold the chalk block 61 by hand, and then make the rope taut , and then draw an ellipse around the winding shaft 63 and the fixing rod 53 .

The beneficial effects of the present invention are: the device can draw circles and ellipses of different sizes at any position on the blackboard through different combinations, and can also draw straight lines of different angles. When drawing a circle, the center of the circle will not be offset, and the diameter of the circle will not change. At the same time, the device overcomes the problem that the traditional teaching instrument cannot draw an ellipse, and can be more convenient for teaching in the classroom.

The above are only specific embodiments of the invention, but the protection scope of the invention is not limited to this, and any changes or substitutions that are not conceived of without creative work should be included within the protection scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims (5)

1. a combined science special-purpose teaching drawing instrument for classrooms, comprising a long board, characterized in that: the long board is provided with a lift chute, and the lift chute is provided with a drive device; the drive device includes A lift motor fixedly installed on the bottom wall of the lift chute, the lift motor is connected with a screw rod that is rotatably connected to the top wall of the lift chute, and the screw rod is threadedly connected with the lift chute to slide A connected threaded block, a rotating motor is fixed on the right side of the threaded block, a motor shaft is connected to the rotating motor, a rotating block is fixed on the motor shaft, and a rotating block is fixed on the right side of the rotating block. An open chute that opens to the right, the bottom wall of the open chute is provided with a block chute, and a tapered block is slidably connected to the block chute, and the tapered block slides with the block. A block spring is connected between the grooves, a scale plate and an elliptical plate are slidably connected in the open chute, and the conical block is used to fix the scale plate and the elliptical plate; the right side of the long plate is There is a T-shaped chute on the side, and the T-shaped chute is provided with a connecting device for fixing the long board and driving the long board to move back and forth, and the scale plate is provided with a brush for drawing circles and straight lines The ellipse plate is provided with a composite device for drawing an ellipse; the connecting device consists of a T-shaped slider, a connecting spring, a splint, an internal groove, a long sliding plate, a return spring, a rotating rod, a rotating block, a limit block, It is composed of an empty groove, an annular groove, a round head rod, a bottom plate, a bracket, an axle, and a wheel. The T-shaped sliding block is slidably connected with the T-shaped sliding block, and the T-shaped sliding block and the T-shaped sliding groove are slidably connected. The connecting spring is connected between, the right side of the T-shaped slider is fixed with the splint, the splint is provided with the inner groove with the opening downward, and the inner groove is slidably connected There is the long sliding plate, the return spring is symmetrically connected between the long sliding plate and the inner groove, the top wall of the inner groove and the top surface of the splint are rotatably connected with the rotating rod, The rotating block is fixed on the top side of the rotating rod, the lower side of the rotating rod extends downward through the long slide plate, and is rotatably connected with the upper and lower sides of the long slide plate, and the bottom side of the rotating rod The limiting block is fixed, the long slide plate is provided with the hollow groove, the inner wall of the hollow groove is provided with the annular groove, and the rotating rod is fixed in the hollow groove with the annular groove. For the round-end rods that are slidably connected by the grooves, the bottom plate is fixed on the right side of the long board, and the brackets are fixed symmetrically on the upper side of the bottom plate and the lower side of the long slide plate, respectively. The axles are rotatably connected to each of the brackets, and the wheels are respectively fixed on the left and right sides of each axle; the brush device is composed of a corresponding groove and a chalk groove, and the bottom surface of the scale plate is provided with a The corresponding groove can be slidably connected with the tapered block, and the left and right sides of the scale plate are provided with the chalk groove for fixing the chalk; the composite device is composed of an adjustment chute and an adjustment slider. , rectangular block, fixed rod, pulling block, symmetrical spring, card pin, winding shaft, chuck, winding wheel, rope, traverse block, friction pad, chalk block, mounting block, limit block, thin rod, small block, composed of small springs, the ellipse The adjusting chute is provided in the circular plate, and another group of the corresponding grooves is also provided on the bottom surface of the elliptical plate, and the adjusting sliding block is slidably connected in the adjusting The rectangular block is fixed on the side surface, the fixing rod is fixed on the right side of the rectangular block, and the pulling block is arranged on the bottom surface of the rectangular block, and there is a space between the pulling block and the rectangular block. The symmetrical spring is connected symmetrically from left to right, the top surface of the pulling block is fixedly provided with the clamping pin that can abut with the corresponding groove in the elliptical plate, and the right side of the elliptical plate is rotatably connected with The winding shaft, the chuck is fixed on the left side of the winding shaft, the winding wheel is fixed on the right side of the winding shaft, the rope is wound on the winding wheel, and the rope is The other end is fixedly connected with the fixing rod, and the traverse block is slidably connected to the rope. The chalk block is fixed on the right side of the block, the chalk block can fix the chalk, the installation block is fixed on the right side of the oval plate, and the limit block is slidably connected in the installation block , the thin rod is fixed on the bottom side of the limit block, the small block is fixed on the bottom side of the thin rod, and the small spring is connected between the small block and the mounting block, The limiting block can abut with the chuck. 2 . The combined type teaching drawing instrument for science as claimed in claim 1 , wherein the friction pad is made of rubber material and has a relatively large frictional force with the rope. 3 . 3 . The combined type teaching drawing instrument for science as claimed in claim 2 , wherein the restriction block is made of magnet material. 4 . 4 . The combined type teaching drawing instrument for science as claimed in claim 3 , wherein the left and right sides of the scale plate are provided with scales aligned with the corresponding grooves. 5 . 5 . The combined science-specific teaching drawing instrument for classroom use according to claim 4 , wherein the rotating motor uses a low-speed motor with a relatively slow rotation speed. 6 .

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