CN110171237A - A kind of combined type natural sciences Special teaching drawing instrument for classroom - Google Patents

Abstract

The invention discloses a combined science special-purpose teaching and drawing instrument for classrooms, which includes a long board, and the driving device includes a lifting motor fixedly installed on the bottom wall of the lifting chute, and the lifting motor is connected with the The top wall of the lifting chute is rotatably connected to the screw rod, and the threaded block on the screw rod is connected with the threaded block slidingly connected with the lifting chute. First, the splint is pulled upwards, and then the splint and the bottom plate are fixed on the blackboard through the connecting spring. Chalk groove on the blackboard, and then push the longboard, the longboard can be driven by the wheels to move, this device can draw circles and ellipses of different sizes at any position on the blackboard through different combinations, and can also draw straight lines at different angles. Compared with the traditional compasses used on the blackboard, when the device draws a circle, the center of the circle will not shift, 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.

Description

A combined science-specific teaching drawing instrument used in classrooms

technical field

The invention relates to the field of education, in particular to a combined science-specific teaching and 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 they are in class. The existing drawing instruments require the teacher to find a good position by hand when drawing a circle, and then use a compasses hand Animated circles, but when drawing a circle with compasses, the center of the circle is easy to slide due to the sliding of the hand, and because these compasses are in use, the two poles are prone to slipping, which will cause the diameter of the circle to change. At the same time, it is very difficult to draw an ellipse with some existing drawing instruments.

Contents of the invention

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

In order to achieve the above object, the present invention provides the following technical solutions: a combined science-specific teaching and drawing instrument for classrooms, comprising a long board, a lifting chute is provided in the long board, and a driving device is provided in the lifting chute ;

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

The right side of the long board is provided with a T-shaped chute, 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. A paintbrush device for drawing circles and straight lines, and a composite device for drawing ellipses is arranged in the ellipse plate.

On the basis of the above technical solution, the connecting device consists of a T-shaped slider, a connecting spring, a splint, an internal groove, a long slide, a return spring, a rotating rod, a rotating block, a limiting block, an empty groove, an annular groove, and a round head rod. , a bottom plate, a bracket, a wheel shaft, and wheels, the T-shaped slider is slidably connected to the T-shaped chute, and the connecting spring is connected between the T-shaped slider and the T-shaped chute, The right side of the T-shaped slider is fixed with the splint, the splint is provided with the internal groove with the opening downward, and the long slide plate is slidably connected to the internal groove. The return spring is symmetrically connected between the slide plate and the internal groove, the top wall of the internal 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 downwards through the long slide plate, and is connected to the upper and lower sides of the long sliding plate in rotation, and the bottom side of the rotating rod is fixed with the limiting block, so The long slide plate is provided with the empty groove, the inner wall of the empty groove is provided with the annular groove, and the rotating rod is fixed in the empty groove with the round head rod slidingly connected with the annular groove The right side of the long plate is fixed with the bottom plate, the upper side of the bottom plate and the lower side of the long slide are respectively fixed with the brackets left and right symmetrically, and the four brackets are rotationally connected. The wheel shafts, the left and right sides of each of the wheel shafts are respectively fixed with the wheels.

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 chalk grooves for fixing chalk.

On the basis of the above technical solution, the composite device consists of an adjusting chute, an adjusting slider, a rectangular block, a fixed rod, a pulling block, a symmetrical spring, a pin, a winding shaft, a chuck, a winding wheel, a rope, a traverse block, Friction pads, chalk blocks, mounting blocks, limit blocks, thin rods, small blocks, and small springs. The elliptical plate is provided with the adjustment chute, and the bottom surface of the elliptical plate is also provided with another set of the Corresponding to the groove, the adjustment slider is slidably connected to the adjustment chute, the right side of the adjustment slider is fixed with the rectangular block, and the right side of the rectangular block is fixed with the fixing rod The bottom surface of the rectangular block is provided with the pulling block, the symmetrical spring is connected symmetrically between the pulling block and the rectangular block, and the top surface of the pulling block is fixed with the elliptical plate. The card pin abutted against the corresponding groove in the elliptical plate, the right side of the elliptical plate is rotatably connected to the winding shaft, the left side of the winding shaft is fixed with the chuck, and the winding shaft 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 to the fixed rod, the traverse block is slidably connected to the rope, the The friction pad slidingly connected with the rope is fixed in the traversing block up and down symmetrically, the chalk block is fixed on the right side of the traversing block, the chalk block can fix chalk, and the elliptical plate The right side of the right side is fixed with the installation block, the limit block is slidably connected to the installation block, the bottom side of the limit block is fixed with the thin rod, 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 installation block, and the limiting block can abut against 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.

On the basis of the above technical solution, the restriction block is made of magnetic material.

On the basis of the above technical solution, 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 low-grade motor used in the rotating motor has a relatively slow speed.

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 at different angles, compared with the larger ones used on traditional blackboards. Compasses, when the device draws a circle, the center of the circle will not shift, and the diameter of the circle will not change. At the same time, this device overcomes the problem that traditional teaching instruments cannot draw ellipses, and it can be more convenient for teaching in the classroom.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the 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, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

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

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

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

Fig. 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 place B in Fig. 4 of the present invention;

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

Fig. 7 is a left view of Fig. 1 of the present invention.

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

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

Below in conjunction with Fig. 1-7, the present invention is described in detail, for the convenience of narration, the orientation mentioned below is stipulated as follows now: the up, down, left, right, front and back directions mentioned below are consistent with the up, down, left, right, front and back directions of the projection relationship of Fig. 1 itself.

Please refer to Fig. 1-7, a kind of embodiment provided by the present invention: a kind of combined science special-purpose teaching drawing instrument for classroom, comprises long board 21, is provided with lifting chute 23 in the described long board 21, described Lifting chute 23 is provided with driving device 101, and described driving device 101 comprises the lifting motor 31 that is fixedly installed on described lifting chute 23 bottom walls, is connected with described lifting chute 23 top walls in the described lifting motor 31 and rotates. Connected screw mandrel 22, on the screw mandrel 22, threaded block 24 that is slidably connected with the lifting chute 23, the right side of the threaded block 24 is fixed with a rotating motor 25, and the rotating motor 25 Connected with the motor shaft 26, the motor shaft 26 is fixed with a rotating block 73, the right side of the rotating block 73 is provided with an opening chute 72 opening to the right, and the bottom wall of the opening chute 72 is set There is a block chute 29, a tapered block 28 is slidably connected to the block chute 29, a block spring 30 is connected between the tapered block 28 and the block chute 29, and the A scale plate 27 and an 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 plate 21 and driving the long plate 21 to move back and forth, and the scale plate 27 is provided with a connecting device 102 for drawing circles and straight lines. The paintbrush device 103 of the said ellipse board 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 slider 34 slidably installed in the T-shaped chute 32 , and the T-shaped slider 34 is connected to the T-shaped chute 32 There is a connecting spring 33, and the right side of the T-shaped slider 34 is fixed with a splint 46, and the splint 46 is provided with an internal groove 40 with an opening downward, and a long slide plate is slidably connected in the internal groove 40 38, the return spring 39 is symmetrically connected between the long sliding plate 38 and the internal groove 40, the top wall of the internal groove 40 and the top surface of the splint 46 are rotatably connected with a rotating rod 74, the The top side of the rotating rod 74 is fixed with the rotating block 42, and the lower side of the rotating rod 74 extends downwards through the long slide plate 38, and is rotationally connected with the upper and lower sides of the long slide plate 38. The bottom side is fixedly provided with a limiting block 47, the long slide plate 38 is provided with an empty groove 43, the inner wall of the empty groove 43 is provided with an annular groove 45, and the rotating rod 74 is fixedly arranged in the empty 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 with left and right symmetry. Bracket 37, four said brackets 37 are rotatably connected with wheel shafts 35, and the left and right sides of each said wheel shaft 35 are respectively fixed with wheels 36, first said splint 46 is pulled up, and then through said connecting spring 33 Fix the splint 46 and the bottom plate 48 on the chalk groove of the blackboard, then push the long board 21, and the long board 21 can be driven to move by the wheels 36. When it needs to be fixed and not move, rotate the long board 21. The rotating block 42 thus drives 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 slide plate 38 to move upward, so that the long slide plate 38 The wheels 36 on the top move upwards, so that the limiting block 47 abuts against the blackboard groove, thereby completing the fixing.

In addition, in one embodiment, the brush device 103 includes a corresponding groove 71 arranged 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 slots 49 for fixing chalk, the tapered block 28 can be pulled down, so that the scale plate 27 can be inserted into the opening chute 72, and then the chalk slot can be adjusted 49 and the distance between the motor shaft 26, and then release the tapered block 28, so that the tapered block 28 snaps into the corresponding corresponding groove 71, and then the chalk is snapped into the chalk slot 49 , then turn on the rotating motor 25, thereby driving the motor shaft 26, the rotating block 73 and the scale plate 27 to rotate, thereby completing drawing a circle, and adjusting the angle of the scale plate 27 through the motor shaft 26 , and then can draw straight lines with different angles along the top surface of the scale plate 27 with a pen.

In addition, in one embodiment, the composite device 104 includes an adjustment sliding groove 54 arranged in the elliptical plate 50, and another set of corresponding grooves 71 is provided on the bottom surface of the elliptical plate 50. The adjusting Slide groove 54 is slidably connected with adjusting slide block 75, and the right side of described adjusting slide block 75 is fixedly provided with rectangular block 52, and the right side of described rectangular block 52 is fixedly provided with fixed bar 53, and described rectangular block 52 The bottom surface of the pull block 56 is provided with a symmetrical spring 55 symmetrically connected between the pull block 56 and the rectangular block 52. The top surface of the pull block 56 is fixed with the The card pin 57 abutted against the corresponding groove 71, the right side of the oval plate 50 is rotatably connected with a winding shaft 63, 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, and a rope 51 is wound on the winding wheel 62, and the other end of the rope 51 is fixedly connected with the fixed 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 up and down in the moving block 60, and the right side of the traversing block 60 is fixed with a chalk block 61, and the chalk block 61 can fix chalk, and the ellipse The right side of the plate 50 is fixedly provided with a mounting block 69, and the limiting block 70 is slidably connected in the mounting block 69, and the bottom side of the limiting block 70 is fixedly provided with a thin rod 68, and the bottom side of the thin rod 68 A small block 66 is fixed, a small spring 67 is connected between the small block 66 and the mounting block 69, the limiting block 70 can abut against the chuck 64, and the tapered block can be 28 pull down, insert the elliptical plate 50 into the rotating block 73, make the rightmost corresponding groove 71 align with the tapered block 28, and then loosen the tapered block 28 , then pull down the small block 66, thereby driving the stop 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 a rope of required length 51, then loosen the small piece 66, then pull down the pulling piece 56, then pull the rectangular piece 52 to the right to the desired point, then release the pulling piece 56 to determine the fixed rod 53 and the position of 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 relatively large friction force with the rope 51. Only by pulling the traverse block 60 by hand can the Movement of chalk block 61 .

In addition, in one embodiment, the limiting block 47 is made of a magnetic material, and when the limiting block 47 collides with the chalk slot, it will be attracted to the chalk slot.

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

In addition, in one embodiment, the low-grade motor used in the rotating motor 25 has a relatively slow rotating speed, so as to effectively prevent the chalk from breaking when drawing a circle.

When needing to start drawing, the clamping plate 46 is first pulled upwards, then the clamping plate 46 and the bottom plate 48 are fixed on the chalk groove of the blackboard by the connecting spring 33, 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 does not move, rotate the rotating block 42 so as to drive the rotation bar 74, the round head bar 41 and the limit block 47 to rotate, and the round end bar 41 rotates to drive the long slide plate 38 to move upwards, so that the wheels 36 on the long slide plate 38 move upwards. Move up, so that the limiting block 47 abuts against the blackboard groove, thereby completing the fixation. 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 rod 22 to rotate, and then driving The threaded block 24 rises to a suitable height, 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, then the chalk is clipped in the chalk slot 49, and then the rotating motor 25 is opened, thereby driving the motor shaft 26, the rotating block 73 and the scale plate 27 to rotate, thereby completing drawing a circle, passing 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 In this process, the rightmost corresponding groove 71 is aligned with the tapered block 28, and then the tapered block 28 is released, and then the small block 66 is pulled down, so that the thin rod 68 drives the stop block 70 to move downward, and then Rotate the chuck 64 by hand so that the winding wheel 62 releases the rope 51 of the required length, then loosen the small piece 66, then pull the pulling piece 56 down, then pull the rectangular piece 52 to the right to the desired point, and then release Pull the block 56 to determine the positions of the fixed 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 fixed rod 53 to get final product.

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 with different angles. Compared with the traditional compasses used on the blackboard, the device When drawing a circle, the center of the circle will not shift, and the diameter of the circle will not change. At the same time, this device overcomes the problem that the traditional teaching instrument cannot draw an ellipse, and can teach in the classroom more conveniently.

The above is only the specific implementation of the invention, but the scope of protection of the invention is not limited thereto, and any changes or replacements that are not thought of through creative work should be covered within the scope of protection of the invention. Therefore, the protection scope of the invention should be determined by the protection scope defined in the claims.

Claims (8)

1. A combined science special-purpose teaching drawing instrument for classrooms, comprising a longboard, characterized in that: the longboard is provided with a lifting chute, and the lifting chute is provided with a driving device; The driving device includes a lifting motor fixedly installed on the bottom wall of the lifting chute, the lifting motor is connected with a screw rod that is rotatably connected with the top wall of the lifting chute, and the screw rod is threadedly connected to the bottom wall of the lifting chute. The threaded block slidingly connected with the lifting chute, the right side of the threaded block is fixed with a rotating motor, the rotating motor is connected with a motor shaft, and a rotating block is fixed on the motor shaft. The right side is provided with an opening chute opening to the right, the bottom wall of the opening chute is provided with a block chute, and a tapered block is slidably connected to the block chute, and the tapered block is connected to the A block spring is connected between the block chute, a scale plate and an elliptical plate are slidably connected in the open chute, and the tapered block is used to fix the scale plate and the ellipse plate; The right side of the long board is provided with a T-shaped chute, 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. A paintbrush device for drawing circles and straight lines, and a composite device for drawing ellipses is arranged in the ellipse plate. 2. A combined science special-purpose teaching and drawing instrument for classrooms according to claim 1, characterized in that: the connecting device consists of a T-shaped slider, a connecting spring, a splint, an internal groove, a long slide, a reset spring, rotating rod, rotating block, limiting block, empty groove, annular groove, round head rod, base plate, bracket, wheel shaft, and wheels, the T-shaped slide block is slidably connected in the T-shaped chute, and the The connecting spring is connected between the T-shaped slider and the T-shaped chute, the right side of the T-shaped slider is fixed with the splint, and the splint is provided with the inner opening with the opening downward. Groove, the long slide plate is slidably connected to the internal groove, the return spring is symmetrically connected between the long slide plate and the internal groove, the top wall of the internal groove and the splint The top surface of the rotating rod is rotatably connected with the rotating block, the top side of the rotating rod is fixed with the rotating block, the lower side of the rotating rod extends downwards through the long slide plate, and is connected with the upper and lower sides of the long slide plate. The side is rotationally connected, the bottom side of the rotating rod is fixed with the limiting block, the long slide is provided with the empty groove, the inner wall of the empty groove is provided with the annular groove, and the rotating rod The round head rod slidingly connected with the annular groove is fixed in the empty groove, the bottom plate is fixed on the right side of the long plate, the upper side of the bottom plate and the lower side of the long slide plate The brackets are symmetrically fixed on the left and right respectively, the wheel shafts are rotatably connected to the four brackets, and the wheels are respectively fixed on the left and right sides of each of the wheel shafts. 3. A combined science special-purpose teaching and drawing instrument for classrooms according to claim 1, wherein the brush device is composed of a corresponding groove and a chalk groove, and the bottom surface of the scale plate is provided with the corresponding groove. groove, 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 chalk. 4. A kind of combined science special-purpose teaching drawing instrument for classroom according to claim 1, it is characterized in that: described composite device is made of adjusting chute, adjusting slider, rectangular block, fixed rod, pulling block, symmetrical Spring, card pin, winding shaft, chuck, winding wheel, rope, traverse block, friction pad, chalk block, installation block, limit block, thin rod, small block, and small spring. For the adjustment chute, the bottom surface of the elliptical plate is also provided with another set of corresponding grooves, the adjustment slider is slidably connected to the adjustment chute, and the right side of the adjustment slider is fixed with a As for the rectangular block, the fixing rod is fixed on the right side of the rectangular block, the pulling block is provided on the bottom surface of the rectangular block, and the left and right symmetrical connections between the pulling block and the rectangular block are arranged. The symmetrical spring, the top surface of the pulling block is fixed with the pin that can abut against the corresponding groove in the elliptical plate, the right side of the elliptical plate is rotatably connected to the winding shaft, The left side of the winding shaft is fixed with the chuck, the right side of the winding shaft is fixed with the winding wheel, the winding wheel is wound with the rope, and the other end of the rope is connected to the The fixed rod is fixedly connected, and the traversing block is slidably connected to the rope, and the friction pad slidably connected to the rope is fixed in the traversing block vertically and symmetrically, and the right side of the traversing block The chalk block is fixed, and the chalk block can fix the chalk. The installation block is fixed on the right side of the elliptical plate, and the limit block is slidably connected to the installation block. The bottom side of the block is fixed with the thin rod, the bottom side of the thin rod is fixed with the small block, the small spring is connected between the small block and the installation block, and the limiting block Can abut against the chuck. 5 . A combined science teaching and drawing instrument for classrooms according to claim 1 , wherein the friction pad is made of rubber material and has a relatively large frictional force with the rope. 5 . 6 . A combined science teaching and drawing instrument for classrooms according to claim 1 , wherein the limiting block is made of a magnet. 7 . 7. A combined science teaching and drawing instrument for classrooms according to claim 2, characterized in that: the left and right sides of the scale plate are provided with scales aligned with the corresponding grooves. 8. A combined science-specific teaching and drawing instrument for classrooms according to claim 4, characterized in that: the low-grade motor used in the rotating motor has a relatively slow speed.