CN209859412U

CN209859412U - Mathematical curve demonstration board

Info

Publication number: CN209859412U
Application number: CN201920290788.2U
Authority: CN
Inventors: 唐风军; 薛春玲; 张利利; 孙贵玲
Original assignee: Huanghe Science and Technology College
Current assignee: Huanghe Science and Technology College
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-12-27
Anticipated expiration: 2029-03-08

Abstract

The utility model relates to a mathematical curve chart demonstration board, which effectively solves the problems that the prior curve chart is drawn on a blackboard, the changing of the graph is complicated and complicated, the efficiency is not high, and the chalk dust influences the health of teachers; the demonstration board comprises a demonstration board main body, wherein a plurality of sliding grooves are formed in the demonstration board main body, sliding blocks are matched with the sliding grooves in a sliding mode, sliding cakes are fixed at the front ends of the sliding blocks, connecting wire holes penetrate through the sliding cakes in the left and right directions and are connected through demonstration wires, clamping blocks are fixed at the left ends of the demonstration wires after the sliding cakes penetrate through the sliding cakes at the leftmost ends, and the right ends of the demonstration wires penetrate through the sliding cakes at the rightmost ends and are wound on wire wheels; a plurality of sliding cakes are matched with clamping columns in a sliding mode towards the direction of the sliding chute, the front ends of the clamping columns are connected with the sliding cakes through springs, clamping blocks are fixed at the rear ends of the clamping columns, the front end faces of the clamping blocks are initially contacted with the sliding chute and are separated after being pressed, rubber pads are arranged on the contact surfaces of the front ends of the clamping blocks and the contact sliding chute, and sliding plates fixed at the upper ends of the rubber pads are arranged at the rear ends of the clamping; the utility model discloses the bandwagon effect is good.

Description

Mathematical curve demonstration board

Technical Field

The utility model relates to a mathematics teaching aid technical field specifically is a mathematics curve chart demonstration board.

Background

Drawing a mathematical curve graph in mathematical teaching is an important teaching method in the teaching process, and generally, a teacher uses chalk on a blackboard to perform graph drawing teaching, the situation that students in the back row cannot see the chalk drawing often occurs, and meanwhile, when the graph needs to be changed, the place needing to be changed needs to be wiped off first and then the new graph is drawn, so that the problems of complexity, time waste, low efficiency and unclean residual marks can be solved, and the body health of the teacher can be influenced by chalk dust;

the existing curve graph is also generated by using electronic equipment, but in some regions, due to the factor of economic conditions, the curve graph does not have the condition of multimedia playing, so that the teaching is limited;

due to the technical defects in the prior art, the technical problems to be solved by the technical personnel in the field are urgent; therefore, a mathematical graph demonstration board is important.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a mathematics curve chart demonstration board, the effectual current curve chart of having solved all is that the teacher draws on the blackboard usually, need wipe earlier when changing the figure and draw again, loaded down with trivial details complicated waste time, efficiency is not high, and the chalk dust influences the healthy problem of teacher.

The utility model discloses a demonstration board main part, a plurality of spouts that evenly set up "T" shape are seted up along left and right direction in the demonstration board main part, arrange in the leftmost end the left end of spout is provided with the scale, and a plurality of inside the spout all is provided with the slider of "T" shape along vertical direction sliding fit, and a plurality of the front end of slider all is fixed with the sliding cake of arranging in demonstration board main part front end, the sliding cake all runs through along left and right direction and has seted up the line connection hole, and a plurality of the line connection hole is connected through demonstration line, the left end of demonstration line passes the sliding cake of leftmost end and is fixed with the fixture block that can not pass the line connection hole, the right-hand member of demonstration line passes the sliding cake of rightmost end and twines on demonstration board main part normal running fit's line wheel;

the sliding blocks are arranged in a sliding fit manner towards the direction of the sliding groove, the front ends of the clamping columns are arranged on the outer sides of the sliding blocks and are fixedly connected with the sliding blocks through springs, clamping blocks arranged in the sliding grooves are fixed to the rear ends of the clamping columns, the front end faces of the clamping blocks are in initial state contact with the sliding grooves and are separated after being pressed, a rubber pad with large friction force is arranged on the contact surface of the front ends of the clamping blocks and the contact sliding grooves, and a sliding plate fixed to the upper end of the rubber pad is arranged at the rear end of each clamping.

Preferably, it is a plurality of the rear end of slider is fixed with the connecting rod that runs through the demonstration board main part, the demonstration board main part has run through along vertical direction and has seted up the connecting rod slide, the lower extreme of connecting rod slide is provided with the reel of fixing in the demonstration board main part, the rear end of connecting rod is fixed with the fixed plate, the inside winding batching of reel stretch out the reel outside and with fixed plate fixed connection.

Preferably, the demonstration line and the roll cloth are both made of color PVC materials.

Preferably, the wire wheel is coaxially fixed with a rotating cake which is arranged in a rotating fit with the demonstration board main body, and anti-skid grains are uniformly distributed on the circumference of the rotating cake.

Preferably, the lower extreme normal running fit of demonstration board main part is provided with the lid, the lid with all be fixed with the handle in the demonstration board main part, when the lid lock is in when in the demonstration board main part, two the handle merges into a handle.

Preferably, the two side positions of the lower end of the demonstration board main body are both fixed with top blocks, and the two top blocks enable the box cover to rotate within a range of 90 degrees.

Preferably, the running fit is provided with the snap ring on the box cover, the draw-in groove of rectangular shape is seted up along left right direction to the snap ring, screw-thread fit is provided with the card handle on the demonstration board main part, the upper end of card handle can block in the draw-in groove outside when vertical state, the snap ring can break away from when the upper end of card handle is the horizontality.

The utility model discloses the structure is ingenious, and the practicality is strong, and ingenious pulling through the lines is handled, has replaced the drawing of chalk, through the pulling of sliding cake, drives the demonstration line and forms different curve charts, and the batching at corresponding rear can generate corresponding histogram this moment, and corresponding curve chart and histogram can be generated to this device ingeniously, can supply the learner to compare and observe the use, also can part use, only use the curve chart or only use the histogram promptly;

the device can be adjusted before class, so that the classroom teaching efficiency of teaching personnel is greatly saved, the valuable classroom time is saved, the teaching personnel can be used for teaching in multiple classes, the drawing needs to be repeated on the blackboard when each class is reached, the teaching efficiency is greatly facilitated, and the teaching burden of the teaching personnel is reduced;

the device does not need to use electric energy, has lower cost and saves energy, and avoids the problem that the body health is influenced by the dust of the chalk generated when a teaching person uses the chalk to draw a curve graph; the method is convenient when the graph needs to be changed, and the defect that the traditional blackboard drawing needs to be firstly erased to change the place and then drawn from a new place, and the efficiency is not high is overcome.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the present invention in use.

Fig. 3 is a schematic view of the front view of the utility model in use.

Fig. 4 is a rear view of the utility model in use.

Fig. 5 is a schematic view of a partial cross-sectional view of the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 5 according to the present invention.

Fig. 7 is a perspective view of the internal device of the present invention.

Fig. 8 is a three-dimensional illustration of the fitting relationship between the cake and the connecting line according to the present invention.

Fig. 9 is a perspective view of the slider, the connecting rod, the winding drum and the cloth of the present invention.

Fig. 10 is a perspective view of the slider according to the present invention.

Fig. 11 is a schematic top view of the present invention.

Fig. 12 is a perspective view of the clamp of the present invention.

Fig. 13 is an enlarged view of the point B in fig. 11 according to the present invention.

Reference numerals: 1. a demonstration board main body; 2. a chute; 3. a graduated scale; 4. a slider; 5. sliding cakes; 6. a wire connecting hole; 7. a demonstration line; 8. a clamping block; 9. a wire wheel; 10. clamping the column; 11. a spring; 12. a clamping block; 13. a rubber pad; 14. a sliding plate; 15. a connecting rod; 16. a connecting rod slideway; 17. a reel; 18. a fixing plate; 19. rolling cloth; 20. rotating the cake; 21. anti-skid lines; 22. a box cover; 23. a handle; 24. a top block; 25. a snap ring; 26. a clamping groove.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 13. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The utility model relates to a mathematical curve chart demonstration board, which comprises a demonstration board main body 1, please refer to fig. 2, a plurality of chutes 2 which are uniformly provided with T-shaped grooves are arranged on the demonstration board main body 1 along the left and right direction, a graduated scale 3 is arranged at the left end of the chute 2 arranged at the leftmost end, the graduated scale 3 can be used as a reference, namely the position of each point, in order to ensure the generated curve chart to be more accurate, the graduated scale can be arranged beside each chute 2, a plurality of chutes 2 are internally provided with T-shaped sliders 4 along the vertical direction in a sliding fit manner, the sliders 4 can slide along the chutes 2 and are arranged into corresponding T-shaped shapes, the stability of the device is ensured, the detachment of the sliders 4 is avoided, the sliders 4 are fixed with sliders 5 arranged at the front end of the demonstration board main body 1 at the front ends, the sliders 5 are used as parts pushed by users, when the position of the sliding block 4 needs to be adjusted, only the sliding block 5 needs to be pushed, the sliding blocks 5 are all provided with connecting wire holes 6 in a penetrating mode along the left-right direction, the connecting wire holes 6 are connected (connected) through the demonstration wire 7, the left end of the demonstration wire 7 penetrates through the sliding block 5 at the leftmost end and is fixedly provided with a fixture block 8 which cannot penetrate through the connecting wire holes 6, the demonstration wire 7 is prevented from being separated due to the existence of the fixture block 8, the right end of the demonstration wire 7 penetrates through the sliding block 5 at the rightmost end and is wound on a wire wheel 9 which is rotatably matched with the demonstration plate main body 1, when the sliding block 4 is pulled, a required curve graph is generated, the sliding block 4 at the leftmost side is pushed, if the length of the demonstration wire 7 is increased, the wire wheel 9 automatically releases the wound demonstration wire 7, if the length of the demonstration wire 7 is shortened, other sliding blocks 4 are continuously pushed at the moment until the position of all the sliding blocks, rotating the wire wheel 9, and winding the demonstration wire 7 with the redundant length on the wire wheel 9;

to avoid this problem, please refer to fig. 5, fig. 6, fig. 10 and fig. 11, when pushing another slider 4, there may be a situation that the other slider 4 is interfered to cause movement, and a plurality of sliders 5 are provided with a clamping post 10 in a sliding fit towards the direction of the sliding chute 2, a front end of the clamping post 10 is disposed outside the slider 5 and is fixedly connected with the slider 5 through a spring 11, an initial state of the spring 11 is set to be a compressed state, a rear end of the clamping post 10 is fixed with a clamping block 12 disposed inside the sliding chute 2, an initial state of a front end surface of the clamping block 12 contacts the sliding chute 2 and is separated after being pressed, a contact surface of the front end of the clamping block 12 and the contact sliding chute 2 is set to be a rubber pad 13 with a large friction force, when in the initial state, because the compressed spring 11 has an elastic force to push the rear end of the clamping post 10, the rubber pad 13 at this, the sliding block 4 is difficult to move, when the clamping column 10 is pressed, the spring 11 is further compressed, the rubber pad 13 is separated from the contact with the sliding chute 2 at the moment, and the pushing can be easily realized, the rear end of the clamping block 12 is provided with the sliding plate 14 fixed at the upper end of the rubber pad 13, when the clamping column 10 is pressed, as shown in fig. 6, the sliding plate 14 is in contact with the sliding chute 2, and the sliding plate 14 is provided with a smooth contact surface, so that the sliding block 4 is more convenient to move;

in the embodiment, during specific use, in an initial state, since the compressed spring 11 has elastic force and has thrust on the rear end of the clamping column 10, the rubber pad 13 is in contact with the sliding chute 2 at the moment, the sliding block 4 is difficult to move due to the action of friction force, when the clamping column 10 is pressed, the spring 11 is further compressed, the rubber pad 13 is separated from the contact with the sliding chute 2 at the moment, and the sliding block can be easily pushed, the rear end of the clamping block 12 is provided with the sliding plate 14 fixed on the upper end of the rubber pad 13, when the clamping column 10 is pressed, as shown in fig. 6, the sliding plate 14 is in contact with the sliding chute 2, and the sliding plate 14 is provided with a smooth contact surface, so;

when the sliding blocks 4 are pulled, a needed curve graph is generated, the sliding blocks 4 on the leftmost side are pushed, if the length of the demonstration lines 7 is increased, the winding demonstration lines 7 can be automatically released by the reel 9, if the length of the demonstration lines 7 is shortened, other sliding blocks 4 are continuously pushed at the moment, until the positions of all the sliding blocks 4 are adjusted, the reel 9 is rotated, the demonstration lines 7 with redundant lengths are wound on the reel 9, and finally the curve graph needed to be used is generated.

In the second embodiment, on the basis of the first embodiment, please refer to fig. 5, 9 and 10, a connecting rod 15 penetrating through the demonstration board main body 1 is fixed at the rear end of the plurality of sliders 4, the demonstration board main body 1 is penetrated through and provided with a connecting rod slideway 16 along the vertical direction, the connecting rod 15 slides inside the connecting rod slideway 16 along the vertical direction, a winding drum 17 fixed on the demonstration board main body 1 is arranged at the lower end of the connecting rod slideway 16, the internal structure of the winding drum 17 is the same as that of the tape measure, i.e., a torsion spring is installed inside the winding drum 17, which is a conventional technology, and is equivalent to replacing the steel measure inside the tape measure with a cloth 19, so that the description is omitted, the fixing plate 18 is fixed at the rear end of the connecting rod 15, and referring to fig. 9, the cloth 19 wound inside the winding drum 17 extends out of the winding drum;

in the embodiment, when the sliding cake 5 is used specifically, the demonstration line 7 is driven to form different curve graphs by pulling the sliding cake 5, at this time, the corresponding rear batching 19 follows to generate a corresponding histogram, when the sliding cake 5 is pushed towards the upper end, the batching 19 is pulled out of the winding drum 17, namely, the histogram is raised, when the sliding cake 5 is pushed towards the lower end, the batching 19 is automatically wound in by the winding drum 17, namely, the histogram is lowered, when the sliding cake 5 is used, because the rubber pad 13 is in contact with the sliding chute 2, under the action of friction force, the sliding block 4 is difficult to move, namely, the batching 19 cannot be automatically wound in by the winding drum 17.

In the third embodiment, on the basis of the second embodiment, in order to facilitate better observation of the user, the demonstration line 7 and the roll cloth 19 are both made of colored PVC materials, so that the vivid colors are more striking, and the user can see clearly.

In a fourth embodiment, on the basis of the first embodiment, in order to enable a user to rotate the wire wheel 9 better, please refer to fig. 2 and 8, the wire wheel 9 is coaxially fixed with a rotating cake 20 which is arranged in a rotating fit with the demonstration board main body 1, the circumference of the rotating cake 20 is uniformly provided with anti-slip lines 21, and when the sliding block 4 slides to a required position, the user can drive the demonstration line 7 of the wire wheel 9 to act by stirring the rotating cake 20.

Fifth, on the basis of first embodiment, for the carrying of convenience device, the lower extreme normal running fit of demonstration board main part 1 is provided with lid 22, lid 22 with all be fixed with handle 23 on the demonstration board main part 1, when lid 22 lock is in when the demonstration board main part 1 is gone up, two handle 23 merges into a handle.

Sixth, on the basis of the fifth embodiment, in order to facilitate better observation of the device, top blocks 24 are fixed at two sides of the lower end of the demonstration board main body 1, and the two top blocks 24 enable the box cover 22 to rotate within 90 degrees, please refer to fig. 1, fig. 2 and fig. 4, when in use, the box cover 22 is rotated to change from the state of fig. 1-fig. 2.

Seventh embodiment, on the basis of the fifth embodiment, as an internal part of the protection device, a snap ring 25 is disposed on the box cover 22 in a rotating fit manner, a strip-shaped snap groove 26 is disposed on the snap ring 25 in the left-right direction, and a snap handle 27 is disposed on the demonstration board body 1 in a threaded fit manner, please refer to fig. 11 and 13, an upper end portion of the snap handle 27 can be snapped outside the snap groove 26 in a vertical state, and the snap ring 25 can be disengaged in a horizontal state at an upper end portion of the snap handle 27.

When the novel sliding block is used specifically, in an initial state, the compressed spring 11 has elastic force and has pushing force on the rear end of the clamping column 10, the rubber pad 13 is in contact with the sliding groove 2 at the moment, the sliding block 4 is difficult to move due to the action of friction force, when the clamping column 10 is pressed, the spring 11 is further compressed, the rubber pad 13 is separated from the contact with the sliding groove 2 at the moment, and the sliding block can be pushed easily, the sliding plate 14 fixed on the upper end of the rubber pad 13 is arranged at the rear end of the clamping block 12, when the clamping column 10 is pressed, as shown in fig. 6, the sliding plate 14 is in contact with the sliding groove 2, and the sliding plate 14 is provided with a smooth contact;

when the sliding block 4 is pulled, a required curve graph is generated, the sliding block 4 at the leftmost side is pushed, if the length of the demonstration line 7 is increased, the winding demonstration line 7 can be automatically released by the wire wheel 9, if the length of the demonstration line 7 is shortened, other sliding blocks 4 are continuously pushed at the moment, and when the positions of all the sliding blocks 4 are adjusted, the wire wheel 9 can be driven to rotate by stirring the rotating cake 20, the demonstration line 7 with redundant length is wound on the wire wheel 9, and finally the curve graph required to be used is generated;

the pulling of the sliding cake 5 drives the demonstration line 7 to form different curve graphs, at the moment, the corresponding rear rolling cloth 19 follows to generate a corresponding column graph, when the sliding cake 5 is pushed towards the upper end, the rolling cloth 19 is pulled out of the winding drum 17, namely the column graph is raised, when the sliding cake 5 is pushed towards the lower end, the rolling cloth 19 is automatically wound by the winding drum 17, namely the column graph is lowered, when in use, due to the fact that the rubber pad 13 is in contact with the sliding chute 2, the sliding block 4 is difficult to move under the effect of friction force, namely the rolling cloth 19 cannot be automatically wound by the winding drum 17.

Claims

1. The utility model provides a mathematical graph demonstration board, a serial communication port, including demonstration board main part (1), a plurality of even spout (2) that set up "T" shape are seted up along left right direction in demonstration board main part (1), arrange in leftmost end the left end of spout (2) is provided with scale (3), and is a plurality of inside slider (4) that all follow vertical direction sliding fit and be provided with "T" shape of spout (2), a plurality of the front end of slider (4) all is fixed with slide cake (5) of arranging demonstration board main part (1) front end in, slide cake (5) all run through along left right direction and have seted up link hole (6), and are a plurality of link hole (6) are connected via demonstration line (7), the left end of demonstration line (7) passes slide cake (5) of leftmost end and is fixed with fixture block (8) that can not pass link hole (6), the right-hand member of demonstration line (7) passes slide cake (5) of rightmost end and twines and lie in rotating demonstration board main part (1) and rotate The matched wire wheel (9);

the sliding blocks (5) are provided with clamping columns (10) in sliding fit towards the direction of the sliding chute (2), the front ends of the clamping columns (10) are arranged on the outer side of the sliding blocks (5) and fixedly connected with the sliding blocks (5) through springs (11), clamping blocks (12) arranged in the sliding chutes (2) are fixed at the rear ends of the clamping columns (10), the clamping blocks (12) are in initial state contact with the sliding chutes (2) at the front end faces and are separated after being pressed, rubber pads (13) with large friction are arranged at the front ends of the clamping blocks (12) and contact surfaces of the sliding chutes (2), and sliding plates (14) fixed at the upper ends of the rubber pads (13) are arranged at the rear ends of the clamping blocks (12).

2. The mathematical graph demonstration board according to claim 1, wherein a connecting rod (15) penetrating through the demonstration board main body (1) is fixed to the rear end of the plurality of sliding blocks (4), a connecting rod slide way (16) penetrates through the demonstration board main body (1) along the vertical direction, a winding drum (17) fixed on the demonstration board main body (1) is arranged at the lower end of the connecting rod slide way (16), a fixing plate (18) is fixed to the rear end of the connecting rod (15), and a piece of cloth (19) wound inside the winding drum (17) extends out of the winding drum (17) and is fixedly connected with the fixing plate (18).

3. A mathematical graph demonstration board according to claim 2, wherein said demonstration line (7) and said batching (19) are made of coloured PVC material.

4. The mathematical graph demonstration board according to claim 1, characterized in that the wire wheel (9) is coaxially fixed with a rotating cake (20) which is rotationally matched with the demonstration board main body (1), and the rotating cake (20) is uniformly provided with anti-skid grains (21) on the circumference.

5. The mathematical graph demonstration board according to claim 1, wherein a box cover (22) is rotatably fitted on the lower end of the demonstration board main body (1), the box cover (22) and the demonstration board main body (1) are both fixed with handles (23), and when the box cover (22) is fastened on the demonstration board main body (1), the two handles (23) are combined into one handle.

6. The mathematical graph demonstration board according to claim 5, wherein the top blocks (24) are fixed on both sides of the lower end of the demonstration board body (1), and the two top blocks (24) rotate within 90 degrees when the box cover (22) is rotated.

7. The mathematical graph demonstration board according to claim 5, wherein a clamp ring (25) is rotatably fitted on the box cover (22), the clamp ring (25) is provided with a strip-shaped clamp groove (26) along the left-right direction, a clamp handle (27) is screwed on the demonstration board main body (1), the upper end of the clamp handle (27) can be clamped outside the clamp groove (26) in a vertical state, and the clamp ring (25) can be separated from the upper end of the clamp handle (27) in a horizontal state.