CN210691708U

CN210691708U - Better teaching aid for mathematics of bandwagon effect

Info

Publication number: CN210691708U
Application number: CN201921105818.4U
Authority: CN
Inventors: 李承鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-06-05
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a teaching aid for mathematics with better display effect, which comprises a bottom plate, universal wheels, a middle support plate, a center plate body and a top plate, and when various curves are explained, the teaching display can be easily completed by utilizing a mark nail, a foam board, a water writing white board and a mark cord, so that teachers do not need to hand-draw coordinate systems and curves and clean and modify the curves and the like, teaching tools such as a blackboard eraser, a water pen, a laser pen and the like can be stored in a drawer, and an LED lamp emits light under dark environment and can illuminate a display area under the gathering of a lampshade; the starter motor drives the driving gear to rotate, the rising and the forward tilting rotation of the central plate body are realized through the transmission of the driven rotating shaft, the driven gear, the first bevel gear, the transmission shaft, the second bevel gear, the first rotating rod, the second rotating rod, the limiting sliding groove and the fixed pin shaft, the teaching demonstration can be easily watched by students in the front row and the back row, the classroom teaching effect is greatly improved, and the work burden of teachers is reduced.

Description

Better teaching aid for mathematics of bandwagon effect

Technical Field

The utility model relates to a teaching aid is used to mathematics, concretely relates to better teaching aid is used to mathematics of bandwagon effect.

Background

The demonstration teaching is that when a teacher teaches, a real object or a visual teaching aid is displayed for the students, or an exemplary experiment is carried out, and the perceptual knowledge is obtained through actual observation to explain and verify the knowledge taught by the students, so that the students can obtain vivid and visual perceptual knowledge through the demonstration teaching, the impression on a study object is deepened, and the theoretical knowledge and the actual things in a book are linked to form a correct and deep concept; the method can provide some visual perceptual materials, arouse the interest of learning, concentrate the attention of students and contribute to deep understanding, memory and consolidation of learned knowledge; the student can carry out thinking activity by observation and thinking, and develop observation power, imagination and thinking ability.

When mathematical teaching is carried out, a teacher often needs to intuitively demonstrate different curves for students to see, and at the moment, the teacher needs to draw a coordinate system by hand or paste coordinate paper on a blackboard and draw curves by hand for demonstration of students, so that the method is very troublesome, and is very troublesome in modifying and changing the curves, and the work load of the teacher is greatly increased; and because the height and the angle of the displayed content can not be adjusted by the display mode of the hand painting coordinate system or the coordinate paper, students in the front row or the back row can not clearly watch the displayed content, and the teaching effect is greatly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a better teaching aid for mathematics of bandwagon effect to solve the problem of proposing among the above-mentioned background art.

In order to achieve the technical purpose, the utility model provides a following technical scheme realizes:

a teaching aid for mathematics with good display effect comprises a bottom plate, universal wheels, a middle supporting plate, a central plate body and a top plate, wherein the bottom of the bottom plate is provided with a plurality of universal wheels, the front side and the back side of the top of the bottom plate are symmetrically provided with two longitudinal slide rails, the bottoms of the two longitudinal slide rails are fixedly connected with the bottom plate, a lifting connecting column is arranged between the two longitudinal slide rails, the front side and the back side of the lifting connecting column are symmetrically provided with two limiting sliding plates, the two limiting sliding plates are both fixedly connected with the lifting connecting column and are slidably connected with the corresponding longitudinal slide rails, the right side of the lifting connecting column is provided with a wheel rack, the top of the lifting connecting column is fixedly connected with the middle supporting plate, the left end and the right end of the top of the middle supporting plate are fixedly connected with, the LED lamp is fixedly arranged on the front side of the top plate, a lampshade is arranged on the outer side of the LED lamp, and the lampshade is fixedly connected with the top plate; the water writing white board is installed at the right end of the front side of the central board body, the foam board is installed at the left end of the front side of the central board body, a plurality of identification nails are inserted into the foam board, and a plurality of identification ropes are wound on the identification nails; the bottom of the middle supporting plate is fixedly provided with a drawer;

the right side of the top of the bottom plate is fixedly connected with a first supporting connecting plate, a motor is fixedly arranged above the right side of the bottom plate through a motor frame, a driving gear is fixedly arranged on the outer side of an output shaft of the motor, the right side of the upper part of the first supporting connecting plate is rotatably connected with a driven rotating shaft, a driven gear is fixedly arranged on the outer side of the front end of the driven rotating shaft, a first bevel gear is fixedly arranged on the outer side of the rear end of the driven rotating shaft, and the driving gear is; a second supporting connecting plate is fixedly connected to the rear side of the top of the bottom plate, a transmission shaft is rotatably connected to the upper portion of the second supporting connecting plate, a second bevel gear is fixedly mounted on the outer side of the left portion of the transmission shaft and meshed with the first bevel gear, a first rotating rod is fixedly connected to the left end of the transmission shaft, and a second rotating rod is rotatably connected to the top end of the first rotating rod; the center of the rear side of the central plate body is communicated with a limiting sliding groove, the left side and the right side of the top end of the second rotating rod are symmetrically and fixedly connected with fixed pin shafts, and the fixed pin shafts are in sliding connection with the limiting sliding groove.

Preferably, the identification nail comprises handheld portion, apron and syringe needle, and the handheld portion of apron top center fixedly connected with, apron bottom center fixedly connected with syringe needle, the diameter of apron is greater than the diameter of syringe needle.

Preferably, the front side of the foam board is printed with a coordinate system.

Preferably, the cross-sectional shape of the limiting sliding groove is cross-shaped.

Preferably, the storage battery and the LED lamp are connected through a lead.

Preferably, the motor is electrically connected to an external power source.

Preferably, the front end of the lampshade is inclined at a certain angle, and the bottom and the left side and the right side of the lampshade are provided with openings.

Preferably, the identification rope is provided in a plurality of colors.

The utility model has the advantages that:

the utility model discloses during operation, the teacher pushes away the teaching aid before the podium, can utilize identification nail, cystosepiment, water writing blank and sign rope to easily accomplish the teaching show when explaining various curves that use mathematically, make the teacher need not hand drawing coordinate system and curve and clean and revise curve etc. can deposit teaching aids such as blackboard eraser, water pen, laser pen in the drawer, the LED lamp sends the light and can illuminate the show area under gathering together of lamp shade under the dark environment of light, lightened teacher's work burden;

when the contents displayed in the back row cannot be clearly seen, the motor can be started, the motor drives the driving gear to rotate, and the lifting connecting column is lifted up under the action of the gear rack due to the fact that the driving gear is meshed with the gear rack and the driven gear, so that the central plate body is lifted up, and the height of the displayed contents is lifted up; simultaneously driven gear rotates, it rotates to drive first bevel gear under the effect of transmission shaft, because first bevel gear drives second bevel gear with the meshing of second bevel gear and rotates, because transmission shaft and first dwang fixed connection, and then make the center plate body rotate that leans forward under the effect of first dwang, the second dwang, spacing spout and fixed pin axle, keep inclining forward when the show content rises and rotate, guarantee that the classmate of former row also can easily watch the teaching show, classroom teaching effect has been promoted greatly, teacher's work burden has been alleviateed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a teaching aid for mathematics with a good demonstration effect;

FIG. 2 is a right side view of a teaching aid for mathematics with a better display effect;

FIG. 3 is a rear view of a teaching aid for mathematics with better demonstration effect;

FIG. 4 is a partial cross-sectional view of a portion A-A of the teaching aid for mathematics with a good demonstration effect;

FIG. 5 is a cross section of a longitudinal slide rail in a teaching aid for mathematics with a good display effect;

fig. 6 is a schematic structural diagram of a mark nail in a teaching aid for mathematics with a good display effect.

In the figure: the device comprises a bottom plate 1, a universal wheel 2, a longitudinal sliding rail 3, a middle supporting plate 4, a lifting connecting column 5, a limiting sliding plate 6, a gear rack 7, a first rotating connecting plate 8, a central plate body 9, a top plate 10, a storage battery 11, an LED lamp 12, a lampshade 13, a water writing white board 14, a foam plate 15, a mark nail 16, a mark rope 17, a first supporting connecting plate 18, a motor 19, a driving gear 20, a driven rotating shaft 21, a driven gear 22, a first bevel gear 23, a second supporting connecting plate 24, a transmission shaft 25, a second bevel gear 26, a first rotating rod 27, a second rotating rod 28, a limiting sliding groove 29, a drawer 30, a fixed pin 31, a handheld part 1601, a cover plate 1602 and a needle 1603.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, in the embodiment of the present invention, a teaching aid for mathematics with good display effect comprises a bottom plate 1, universal wheels 2, a middle support plate 4, a central plate body 9 and a top plate 10, wherein the bottom of the bottom plate 1 is provided with a plurality of universal wheels 2, the front and back sides of the top of the bottom plate 1 are symmetrically provided with two longitudinal slide rails 3, the bottoms of the two longitudinal slide rails 3 are fixedly connected with the bottom plate 1, a lifting connection column 5 is arranged between the two longitudinal slide rails 3, the front and back sides of the lifting connection column 5 are symmetrically provided with two limit sliding plates 6, the two limit sliding plates 6 are both fixedly connected with the lifting connection column 5 and are slidably connected with the corresponding longitudinal slide rails 3, the right side of the lifting connection column 5 is provided with a rack 7, the top of the lifting connection column 5 is fixedly connected with the, a central plate body 9 is rotatably connected between the two first rotating connecting plates 8 through a shaft, the top of the central plate body 9 is fixedly connected with a top plate 10, the top of the top plate 10 is fixedly provided with a storage battery 11, the front side of the top plate 10 is fixedly provided with an LED lamp 12, the outer side of the LED lamp 12 is provided with a lampshade 13, and the lampshade 13 is fixedly connected with the top plate 10; the water writing white board 14 is installed at the right end of the front side of the central board body 9, the foam board 15 is installed at the left end of the front side of the central board body 9, a plurality of identification nails 16 are inserted into the foam board 15, and a plurality of identification ropes 17 are wound on the identification nails 16; a drawer 30 is fixedly arranged at the bottom of the middle supporting plate 4, and teaching tools such as a blackboard eraser, a fountain pen, a laser pen and the like can be stored in the drawer 30;

the right side of the top of the bottom plate 1 is fixedly connected with a first supporting connecting plate 18, a motor 19 is fixedly arranged above the right side of the bottom plate 1 through a motor frame, a driving gear 20 is fixedly arranged on the outer side of an output shaft of the motor 19, the right side of the upper part of the first supporting connecting plate 18 is rotatably connected with a driven rotating shaft 21, a driven gear 22 is fixedly arranged on the outer side of the front end of the driven rotating shaft 21, a first bevel gear 23 is fixedly arranged on the outer side of the rear end of the driven rotating shaft 21, and the driving gear 20 is meshed; a second supporting connecting plate 24 is fixedly connected to the rear side of the top of the bottom plate 1, the upper part of the second supporting connecting plate 24 is rotatably connected with a transmission shaft 25, a second bevel gear 26 is fixedly installed on the outer side of the left part of the transmission shaft 25, the second bevel gear 26 is meshed with the first bevel gear 23, a first rotating rod 27 is fixedly connected to the left end of the transmission shaft 25, and a second rotating rod 28 is rotatably connected to the top end of the first rotating rod 27; the center of the rear side of the central plate body 9 is communicated with a limiting sliding groove 29, the left side and the right side of the top of the second rotating rod 28 are symmetrically and fixedly connected with a fixed pin shaft 31, the fixed pin shaft 31 is connected with the limiting sliding groove 29 in a sliding mode, the starting motor 19 drives the driving gear 20 to rotate, the driving gear 21 is driven by the driving shaft, the driven gear 22 is driven by the driving gear 23, the transmission shaft 25, the second bevel gear 26 is driven by the driving shaft 27, the second rotating rod 28, the limiting sliding groove 29 and the fixed pin shaft 31 are driven to achieve ascending and forward-leaning rotation of the central plate body 9, and therefore teaching demonstration can be easily watched by students.

The identification nail 16 comprises handheld portion 1601, apron 1602 and syringe needle 1603, and the central fixedly connected with handheld portion 1601 in apron 1602 top, apron 1602 bottom center fixedly connected with syringe needle 1603, and the diameter of apron 1602 is greater than the diameter of syringe needle 1603, and the setting of handheld portion 1601 can make things convenient for the plug of identification nail.

A coordinate system is printed on the front side face of the foam board 15, and the coordinate system can be convenient for teachers to accurately position key points of the curve.

The cross section of the limiting sliding groove 29 is in a cross shape.

The storage battery 11 is connected with the LED lamp through a conducting wire, and the LED lamp 12 emits light in a dark environment to assist in lighting.

The motor 19 is electrically connected to an external power source.

The front end of the lampshade 13 is inclined at a certain angle, the bottom and the left and right sides of the lampshade are provided with openings, and the lampshade 13 can enable illumination light emitted by the LED lamp 12 to gather to the central plate body 9.

The identification rope 17 is set to be in multiple colors, and the multiple colors are convenient for distinguishing different curves.

The utility model discloses a theory of operation is:

the utility model relates to a better teaching aid for mathematics of bandwagon effect, in operation, the teacher pushes away the teaching aid before the podium, can insert identification nail 16 to the key point coordinate position on cystosepiment 15 when explaining various curves that use mathematically, and loop through each identification nail and end winding identification rope 17 with identification cotton rope 17 and accomplish the teaching show on the identification nail, and can carry out the writing auxiliary teaching of writing on water writing blank 14, make the teacher need not hand drawing coordinate system and curve and clean and revise curve etc. can deposit teaching aids such as blackboard eraser, water pen, laser pen in drawer 30, LED lamp 12 sends the light and can illuminate the show area under the gathering of lamp shade 13 under the darker environment of light, the work burden of teacher has been alleviateed;

when the contents are not clearly seen by the back row students, the motor 19 can be started, the motor 19 drives the driving gear 20 to rotate, and the driving gear 20 is meshed with the rack gear 7 and the driven gear 22, so that the lifting connecting column 5 is lifted under the action of the rack gear 7, the central plate body 9 is lifted, and the height of the displayed contents is lifted; meanwhile, the driven gear 22 rotates, the first bevel gear 23 is driven to rotate under the action of the transmission shaft 25, the second bevel gear 26 is driven to rotate by the meshing of the first bevel gear 23 and the second bevel gear 26, the transmission shaft 25 is fixedly connected with the first rotating rod 27, and the central plate body 9 is driven to rotate forwards under the action of the first rotating rod 27, the second rotating rod 28, the limiting sliding groove 29 and the fixed pin shaft 31, so that the display content is increased while the display content is kept to rotate forwards, the teaching display can be easily watched by front classmates, the classroom teaching effect is greatly improved, and the workload of teachers is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A teaching aid with good display effect for mathematics comprises a bottom plate (1), universal wheels (2), a middle support plate (4), a central plate body (9) and a top plate (10), and is characterized in that the bottom of the bottom plate (1) is provided with a plurality of universal wheels (2), the front side and the rear side of the top of the bottom plate (1) are symmetrically provided with two longitudinal slide rails (3), the bottoms of the two longitudinal slide rails (3) are fixedly connected with the bottom plate (1), a lifting connecting column (5) is arranged between the two longitudinal slide rails (3), the front side and the rear side of the lifting connecting column (5) are symmetrically provided with two limiting sliding plates (6), the two limiting sliding plates (6) are both fixedly connected with the lifting connecting column (5) and are slidably connected with the corresponding longitudinal slide rails (3), the right side of the lifting connecting column (5) is provided with a wheel rack (7), the top, the left end and the right end of the top of the middle supporting plate (4) are fixedly connected with first rotating connecting plates (8), a central plate body (9) is connected between the two first rotating connecting plates (8) in a rotating mode through a shaft, a top plate (10) is fixedly connected to the top of the central plate body (9), a storage battery (11) is fixedly mounted at the top of the top plate (10), an LED lamp (12) is fixedly mounted on the front side of the top plate (10), a lampshade (13) is arranged on the outer side of the LED lamp (12), and the lampshade (13) is fixedly connected with the top; the water writing white board (14) is installed at the right end of the front side of the central board body (9), the foam board (15) is installed at the left end of the front side of the central board body (9), a plurality of identification nails (16) are inserted into the foam board (15), and a plurality of identification ropes (17) are wound on the identification nails (16); a drawer (30) is fixedly arranged at the bottom of the middle supporting plate (4);

the right side of the top of the bottom plate (1) is fixedly connected with a first supporting connecting plate (18), a motor (19) is fixedly mounted above the right side of the bottom plate (1) through a motor frame, a driving gear (20) is fixedly mounted on the outer side of an output shaft of the motor (19), the right side of the upper portion of the first supporting connecting plate (18) is rotatably connected with a driven rotating shaft (21), a driven gear (22) is fixedly mounted on the outer side of the front end of the driven rotating shaft (21), a first bevel gear (23) is fixedly mounted on the outer side of the rear end of the driven rotating shaft (21), and the driving gear (20) is meshed with the left; a second supporting connecting plate (24) is fixedly connected to the rear side of the top of the bottom plate (1), the upper portion of the second supporting connecting plate (24) is rotatably connected with a transmission shaft (25), a second bevel gear (26) is fixedly installed on the outer side of the left portion of the transmission shaft (25), the second bevel gear (26) is meshed with the first bevel gear (23), a first rotating rod (27) is fixedly connected to the left end of the transmission shaft (25), and a second rotating rod (28) is rotatably connected to the top end of the first rotating rod (27); the center of the rear side of the central plate body (9) is communicated with a limiting sliding groove (29), the left side and the right side of the top end of the second rotating rod (28) are symmetrically and fixedly connected with fixed pin shafts (31), and the fixed pin shafts (31) are connected with the limiting sliding groove (29) in a sliding mode.

2. The teaching aid for mathematics that show effect is better according to claim 1, characterized in that, identification nail (16) comprises handheld portion (1601), apron (1602) and syringe needle (1603), and apron (1602) top center fixedly connected with handheld portion (1601), apron (1602) bottom center fixedly connected with syringe needle (1603), and the diameter of apron (1602) is greater than the diameter of syringe needle (1603).

3. The teaching aid for mathematics with better display effect according to claim 1, characterized in that the front side of the foam board (15) is printed with a coordinate system.

4. The teaching aid for mathematics with better display effect according to claim 1, characterized in that the cross-sectional shape of the limiting sliding groove (29) is cross-shaped.

5. The teaching aid for mathematics with better display effect according to claim 1, characterized in that battery (11) and LED lamp pass through the wire and connect.

6. A teaching aid for mathematics with better presentation according to claim 1, characterized in that the motor (19) is electrically connected to an external power supply.

7. The teaching aid for mathematics with better display effect according to claim 1, characterized in that the front end of the lampshade (13) is inclined at a certain angle and the bottom and the left and right sides of the lampshade are opened.

8. The teaching aid for mathematics with better display effect according to claim 1, characterized in that said identification rope (17) is set in multiple colors.