CN210777398U

CN210777398U - Solid geometry cross section figure presentation device

Info

Publication number: CN210777398U
Application number: CN201921803467.4U
Authority: CN
Inventors: 代超; 代沛恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-16
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to the technical field of teaching aid application, and discloses a three-dimensional geometric cross-section figure demonstration device, which comprises a base, a display platform and a model, wherein the display platform is arranged on the upper part of the base, the lower surface of the display platform is fixedly connected with a rotating mechanism, scale marks are uniformly marked on the outer ring of the surface of the display platform, the angle of the display platform can be accurately adjusted according to the numerical values of the scale marks, and an indicating marker post is arranged on the outer side of the display platform; base right side upper portion is connected with the LED lamp plate, base left side upper portion is connected with the projection curtain board. The utility model discloses convenient to use, simple structure can show the cross-sectional diagram of the arbitrary angle of stereogeometry, and student's understanding of being convenient for is favorable to improving student's interest of studying stereogeometry, improves learning efficiency.

Description

Solid geometry cross section figure presentation device

Technical Field

The utility model relates to a teaching aid application technical field specifically is a solid geometry cross-sectional diagram presentation device.

Background

Mathematics is a subject that requires strong logic analysis ability and spatial imagination, especially in the learning process of solid geometry. Solid geometry is a subject of a door that has very high requirements on the spatial imagination of people.

In the teaching process, the shape of the cross-sectional graph of the solid geometric model is often required to be known, but for students with poor spatial imagination, the students are difficult to imagine only by observing the model and often cannot imagine the shape of the cross-sectional graph by the imagination of the students, so that the students lose learning interest. In addition, the teacher often needs to rotate a specific angle precisely during the lecture to show the section figure of the three-dimensional model under the specific angle to the student. In this case, it is necessary to use other tools, which is complicated. Therefore, there is a high necessity for a display device that can intuitively display the sectional figure of the model, can precisely rotate the angle of the model, and has a function of storing the model.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solid geometry cross-sectional diagram presentation device to the student knows solid geometry's cross-sectional diagram fast through this device, improves interest in learning.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a three-dimensional geometric cross-sectional figure demonstration device comprises a base, a display platform and a model, wherein the display platform is arranged on the upper part of the base, the lower surface of the display platform is fixedly connected with a rotating mechanism, scale marks are uniformly marked on the outer ring of the surface of the display platform, the angle of the display platform can be accurately adjusted according to the numerical values of the scale marks, and an indicating mark rod is arranged on the outer side of the display platform; base right side upper portion is connected with the LED lamp plate, base left side upper portion is connected with the projection curtain board.

Preferably, the inner space of the base is divided into a lower box body and an upper box body, a battery box is arranged inside the lower box body, a power switch is fixedly mounted on the outer side of the lower box body, and the battery box is electrically connected with the power switch and the LED lamp panel; the rotating mechanism is arranged in the upper box body.

Preferably, a box door is installed on the front surface of the lower box body.

Preferably, the rotating mechanism comprises a first bearing and a second bearing, the first bearing is vertically fixed inside the upper box body, the upper end of the first bearing penetrates through the upper cover of the upper box body and is fixedly connected with the display stand, and a first bevel gear is fixedly mounted in the middle of the first bearing; the second bearing is transversely fixed inside the upper box body, one end of the second bearing is fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the other end of the second bearing is located on the outer side of the upper box body and is fixedly connected with a rotary table, and a holding rod is fixedly connected to one side of the rotary table.

Preferably, the turntable is of a flat cylindrical structure.

Preferably, the LED lamp panel is fixedly connected to the right side of the base through a first rotating shaft, and the LED lamp panel can be conveniently stored through the first rotating shaft.

Preferably, the projection curtain plate is fixedly connected to the left side of the base through a second rotating shaft. Can conveniently accomodate the projection curtain board through the second pivot.

Preferably, the projection curtain plate is made of a light-permeable white frosted acrylic plate.

Preferably, the lower part of the base is fixedly provided with a supporting leg.

The beneficial effects of the utility model reside in that:

the utility model discloses a set up show stand, instruction sighting rod and rotary mechanism, can drive the rotatory specific angle of show stand through rotary mechanism to the sectional pattern under the different angles of show model, adjust convenient and fast, the angle is accurate, and the student of being convenient for observes the sectional pattern under specific angle and the sectional variation of model under different angles, the teaching of being convenient for. Through setting up LED lamp plate and projection curtain board, can be with the section picture projection of model to the projection curtain board on, turn into plane figure with spatial structure, make the more directly perceived of section figure show, be favorable to student's understanding to the section figure, can also improve the student to the study interest of solid geometry.

The utility model discloses a first pivot and second pivot can make LED lamp plate and projection curtain board folding, effectively save the space of placing. Through setting up first bearing, second bearing and carousel, can carry out the rotation of show stand through mechanical means, simple structure is durable, convenient to use.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic left-side sectional view of the present invention.

Fig. 3 is a schematic plan view of the display stand of the present invention.

In the figure: the LED lamp comprises a base 1, a lower box body 2, an upper box body 3, an LED lamp panel 4, a display stand 5, a first bearing 6, a first bevel gear 7, a first bearing seat 8, a fixing plate 9, a second bearing 10, a second bevel gear 11, a rotary table 12, a holding rod 13, a scale marker post 14, a support leg 15, a battery box 16, a power switch 17, a lead 18, a second bearing seat 19, a fourth bearing seat 20, a third bearing seat 21, a model 22, a projection screen plate 23, a box body door 24, a first rotating shaft 25 and a second rotating shaft 26.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "center", "front", "back", "vertical", "lateral", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a solid geometry section figure demonstration device comprises a base 1, a display stand 5 and a model 22, wherein supporting legs 15 are fixedly mounted on the lower portion of the base 1, the upper portion of the right side of the base 1 is connected with an LED lamp panel 4 through a first rotating shaft 25, and the upper portion of the left side of the base 1 is connected with a projection screen plate 23 through a second rotating shaft 26. The inner space of the base 1 is divided into a lower box body 2 and an upper box body 3, wherein a battery box 16 is arranged inside the lower box body 2, a power switch 17 is fixedly arranged outside the lower box body 2, the battery box 16 is electrically connected with the power switch 17 and the LED lamp panel 4 through a wire 18, and the LED lamp panel 4 can be controlled to emit light and be closed through the power switch 17. A box door 24 is attached to the front surface of the lower box 2, and the lower box 2 is an independent space in which the mold 22 can be accommodated. LED lamp plate 4 and projection curtain board 23 can overturn about 180 on base 1, can overturn to base 1 top during the use, then open switch 17, LED lamp plate 4 can give out light promptly, and the shadow of model 22 can be projected on projection curtain board 23 this moment, and projection curtain board 23 adopts the white ya keli board material of light-permeable, can make the observer follow the shadow of projection curtain board 23 back observation model 22 to determine corresponding cross sectional figure.

The display stand 5 is arranged in the middle of the upper surface of the base 1, the lower surface of the display stand is fixedly connected with the rotating mechanism, and the display stand can rotate for 360 degrees through the rotating mechanism. The outer circle of the surface of the display stand 5 is marked with scale marks, an indication mark post 14 is arranged on the outer side, and the indication mark post 14 can be used for indicating the rotation angle of the display stand 5 when the display stand 5 rotates, so that the display stand 5 can be conveniently rotated by a specific angle. Wherein, the rotating mechanism is arranged inside the upper box 3 and comprises a first bearing 6 and a second bearing 10. The first bearing 6 is vertically fixed inside the upper box body 3 through a first bearing seat 8 fixedly installed on the bottom surface of the upper box body 3 and a third bearing seat 21 fixedly installed on the top surface of the upper box body 3, the upper end of the first bearing penetrates through the upper cover of the upper box body 3 and is fixedly connected with the display stand 5, and a first bevel gear 7 is fixedly installed in the middle of the first bearing 6; the second bearing 10 is transversely fixed inside the upper box 3 through a second bearing seat 19 and a fourth bearing seat 20, a fixing plate 9 is arranged inside the upper box 3 for fixing the second bearing 10, and the second bearing seat 19 is fixed on the side wall of the upper box 3. The left end fixedly connected with second bevel gear 11 of second bearing 10, second bevel gear 11 and the meshing of first bevel gear 7 are connected, can drive first bevel gear 7 and rotate, and the right-hand member of second bearing 10 is located the box 3 outside to with carousel 12 fixed connection, at carousel 12 one side fixedly connected with holding rod 13, can be convenient for rotatory carousel 12 through handheld holding rod 13.

The using method comprises the following steps:

when using, place model 22 on show stand 5 surfaces, then overturn LED lamp plate 4 and projection curtain board 23 to the top of base 1, then open switch 17, LED lamp plate 4 circular telegram is luminous this moment, and the observer can follow the back of projection curtain board 23 and observe the cross-section projection figure of model 22 this moment.

When the section pattern under the specific angle needs to be shown, the holding rod 13 is shaken by hand to drive the rotary table 12 to rotate, then the rotary table 12 can drive the second bearing 10 to rotate, and the first bearing 6 is driven to rotate through the meshing of the second bevel gear 11 and the first bevel gear 7, then the first bearing 6 can drive the display table 5 to rotate, and according to the scale value of the edge of the display table 5, the accurate rotation angle can be realized, so that the section pattern of the model 22 at the specific angle can be shown. It is of course also possible to show variations in the cross-sectional profile of the model 22 at various angles.

After the use, the model 22 can be retracted and placed in the lower box body 2, and the box body door 24 is closed, so that the model 22 can be effectively prevented from being lost.

Further, the above-mentioned fixed connection and fixed mounting are to be understood in a broad sense unless otherwise specifically stated or limited, and may be, for example, welding, gluing, or integrally formed, as is conventional in the art. The foregoing "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a solid geometry cross sectional diagram presentation device, includes base (1), show stand (5), model (22), its characterized in that: the display platform (5) is arranged at the upper part of the base (1), the lower surface of the display platform is fixedly connected with the rotating mechanism, scale marks are marked on the outer ring of the display platform (5), and an indicating mark rod (14) is arranged on the outer side of the display platform (5); base (1) right side upper portion is connected with LED lamp plate (4), base (1) left side upper portion is connected with projection curtain board (23).

2. A solid geometry cross section demonstration apparatus according to claim 1 further comprising: the inner space of the base (1) is divided into a lower box body (2) and an upper box body (3), a battery box (16) is arranged in the lower box body (2), a power switch (17) is fixedly mounted on the outer side of the lower box body (2), and the battery box (16) is electrically connected with the power switch (17) and the LED lamp panel (4); the rotating mechanism is arranged in the upper box body (3).

3. A solid geometry cross section demonstration apparatus according to claim 2 further comprising: and a box body door (24) is arranged on the front surface of the lower box body (2).

4. A solid geometry cross section demonstration apparatus according to claim 2 further comprising: the rotating mechanism comprises a first bearing (6) and a second bearing (10), the first bearing (6) is vertically fixed inside the upper box body (3), the upper end of the first bearing penetrates through the upper cover of the upper box body (3) and is fixedly connected with the display stand (5), and a first bevel gear (7) is fixedly installed in the middle of the first bearing; the second bearing (10) is transversely fixed inside the upper box body (3), one end of the second bearing is fixedly connected with a second bevel gear (11), the second bevel gear (11) is meshed with the first bevel gear (7), the other end of the second bearing (10) is located on the outer side of the upper box body (3) and is fixedly connected with a rotating disc (12), and a holding rod (13) is fixedly connected to one side of the rotating disc (12).

5. A solid geometry cross section demonstration apparatus according to claim 4 further comprising: the rotary disc (12) is of a flat cylindrical structure.

6. A solid geometry cross section demonstration apparatus according to claim 1 further comprising: LED lamp plate (4) are through first pivot (25) fixed connection in base (1) right side.

7. A solid geometry cross section demonstration apparatus according to claim 1 further comprising: the projection curtain plate (23) is fixedly connected to the left side of the base (1) through a second rotating shaft (26).

8. A solid geometry cross section demonstration apparatus according to claim 1 further comprising: the projection curtain board (23) is made of a light-permeable white frosted acrylic board.

9. A solid geometry cross section demonstration apparatus according to claim 1 further comprising: and the lower part of the base (1) is fixedly provided with a supporting leg (15).