CN216287216U - Dynamic demonstration device for junior middle school mathematics parabola - Google Patents

Abstract

The utility model relates to the technical field of teaching aids, and particularly discloses a dynamic demonstration device for a junior middle school mathematics parabola, which comprises: the device comprises an outer cover assembly, a marble assembly, a compressing assembly, a small ball and a display panel, wherein the outer cover assembly is a shell of the device, the marble assembly is rotatably connected to one end of the outer cover assembly, the compressing assembly is slidably connected to one side of the outer cover assembly, one end of the small ball is in contact with the compressing assembly, the other end of the small ball is in contact with the outer cover assembly, and the display panel is slidably connected to the outer cover assembly. The water absorption paper on the display panel can absorb the ink carried by the small balls and display the tracks stroked by the small balls, so that the specific shape of the parabola can be seen according to the tracks; the device can pop out the small ball in multiple angles and multiple degrees to form a contrast experiment, so that the understanding of students on the parabola is deepened; the device recycles the small balls, thereby avoiding waste; the display panel can be taken out, and the student can conveniently observe the parabola trace at a short distance.

Description

Dynamic demonstration device for junior middle school mathematics parabola

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a dynamic demonstration device for junior middle school mathematics parabola.

Background

In the mathematics teaching process in the beginning, the explanation to the parabola can appear, and the parabola is a relatively abstract line type, and direct explanation is not favorable to the student to understand, consequently can need the teacher to demonstrate the orbit of parabola.

At present, the demonstration method is simple, most of teachers throw chalk points directly to enable the chalk points to slide out of the air, although the method can observe the sliding-out track, specific sliding traces cannot be displayed, understanding is not facilitated, and thrown chalks need to be picked up, so that teaching progress is influenced.

And the other part is a small part which throws out the track and displays the image by light, but the device has high cost and is not suitable for teaching.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a dynamic demonstration device for a junior middle school mathematics parabola, which aims to at least solve the technical problems in the prior art.

In order to achieve the above object, an aspect of the present invention provides a dynamic demonstration apparatus for a junior middle school mathematics parabola, including: the device comprises an outer cover component, a marble component, a pressing component, a small ball and a display board, wherein the outer cover component is a shell of the device, the outer cover component is used for facilitating the placement of the device, the marble component is rotatably connected to one end of the outer cover component, the small ball is a small ball which has water absorption and has density higher than that of water, the marble component can eject the small ball stained with ink and slides out of a parabolic-like track, the pressing component is slidably connected to one side of the outer cover component, one end of the small ball is in contact with the pressing component, the other end of the small ball is in contact with the outer cover component, the pressing component is used for fixing the position of the small ball, the display board is slidably connected to the outer cover component and is used for displaying the motion track of the small ball, water absorption paper on the display board can absorb the ink carried by the small ball and displays the track drawn by the small ball, and the display board is slidably connected to the shell, therefore, the display panel can be drawn out after the demonstration is finished, and the students can conveniently observe the display panel.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is provided with a transparent plate, so that the movement track of the small balls inside can be observed, and students can conveniently observe the parabola;

2. the water absorption paper on the display panel can absorb ink carried by the small balls and display tracks stroked by the small balls, so that parabolic tracks are left on the display panel, and the specific shape of the parabola can be seen according to the tracks;

3. the device can pop out the small ball in multiple angles and multiple degrees to form a contrast experiment, so that the understanding of students on the parabola is deepened;

4. the device recycles the small balls, thereby avoiding waste;

5. the display panel can be taken out, and the student can conveniently observe the parabola trace at a short distance.

Drawings

FIG. 1 is a schematic perspective view of a dynamic demonstration apparatus for mathematics parabola in junior middle schools according to the present invention;

FIG. 2 is a schematic perspective view of the back side of the present invention;

FIG. 3 is a schematic perspective view of the interior of the present invention;

FIG. 4 is a perspective view of the marble assembly of the present invention;

FIG. 5 is an enlarged view at FIG. 4A;

FIG. 6 is a schematic cross-sectional perspective view of a transparent sheet according to the present invention;

FIG. 7 is a perspective view of the detent assembly of the present invention;

fig. 8 is a schematic side view of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

101 casing, 102 transparent plate, 103 couple, 104 supporting pad, 105 inclined plane board, 201 push-pull rod, 202 supporting block, 203 first extension spring, 301 fixed plate, 302 rebound post, 303 supporting block, 304 second extension spring, 305 screens groove, 306 screens block, 307 rotating shaft, 401 fixed rod, 402 spring, 403 cleaning pad, 501 pressing block, 502 connecting shaft, 503 third extension spring, 504 limiting plate, 601 limiting shaft, 602 fourth extension spring, 7 display panel, 8 pellets.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

A dynamic demonstration apparatus for a junior middle school mathematical parabola according to some embodiments of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1, 6 and 8, according to some embodiments of the present invention, there is provided a dynamic demonstration apparatus for a junior middle school mathematics parabola, including: dustcoat subassembly, marble subassembly, compress tightly subassembly, bobble 8 and display panel 7, the dustcoat subassembly is the shell 101 of device, and the marble subassembly rotates to be connected in the center of dustcoat subassembly right-hand member downwards, compresses tightly the right-hand member of subassembly sliding connection in the front side of dustcoat subassembly, 8 one ends of bobble with compress tightly the subassembly contact, the other end and the dustcoat subassembly contact of bobble 8, sliding connection has display panel 7 on the dustcoat subassembly.

In the teaching process of junior middle school's mathematics, need explain the parabola, just need carry out the dynamic demonstration of parabola this time, the dustcoat subassembly is placed for this device of convenience, it is the position in order to fix bobble 8 to compress tightly the subassembly, bobble 8 is the bobble 8 that has hydroscopicity and density ratio water is big, the bobble subassembly can pop out the bobble 8 that is stained with the ink, the orbit of roll-off class parabola, and show the orbit on display panel 7, the ink that bobble 8 carried can be adsorbed to the paper that absorbs water on the display panel 7, show the orbit that bobble 8 was drawn, and display panel 7 sliding connection is in shell 101, so can take out display panel 7 after accomplishing the demonstration, make things convenient for the student to observe.

According to a particular embodiment, as shown in fig. 1, 2 and 3, the housing assembly comprises: casing 101, transparent plate 102, inclined plane board 105 and suspension assembly, suspension assembly fixed connection is in the rear side of casing 101, and suspension assembly is used for hanging on the wall, and transparent plate 102 fixed connection is in the front side of casing 101, and inclined plane board 105 fixed connection is in the inside of casing 101, and inclined plane board 105 and transparent plate 102 fixed connection, suspension assembly fixed connection is in the rear side of casing 101.

As shown in fig. 2, the suspension assembly includes: couple 103 and supporting pad 104, two couples 103 interval certain distance fixed connection in shell 101 rear side, two supporting pad 104 and shell 101 fixed connection, two supporting pad 104 are located the below of couple 103.

Hang this device to the wall through couple 103 on, the supporting pad 104 below couple 103 is used for supporting the wall, makes the device be in the horizontality, and transparent plate 102 is transparent material, is for the motion state of the interior bobble 8 of observation device, and inclined plane board 105 is then for letting bobble 8 slide to initial position.

According to a particular embodiment, as shown in fig. 2 and 4, the marble assembly comprises: fixed plate 301, kick-back post 302, supporting shoe 303, second extension spring 304, screens groove 305, screens piece 306 and pivot 307, rotate on the shell 101 and be connected with pivot 307, fixedly connected with fixed plate 301 on the pivot 307, one side fixedly connected with supporting shoe 303 of fixed plate 301, sliding connection has kick-back post 302 on the supporting shoe 303, the cover has second extension spring 304 on the kick-back post 302, the one end and the kick-back post 302 fixed connection of second extension spring 304, the other end and the supporting shoe 303 fixed connection of second extension spring 304, kick-back post 302 one end is rotated and is connected with screens groove 305, screens piece 306 has one at least, screens piece 306 fixed connection is in one side of fixed plate 301, the one end and the screens groove 305 contact of screens piece 306.

The device is pressed with the needed small ball 8 contaminated with ink, when an experiment needs to be performed, the fixing plate 301 is rotated around the rotating shaft 307, the angle is adjusted to a needed angle, then the clamping groove 305 is rotated to make the clamping groove 305 be separated from the contact of the clamping block 306, at this time, the second tension spring 304 in the stretching state is restored to the original state, so as to drive the rebounding column 302 to bounce, one end of the rebounding column 302 can impact the small ball 8 to knock out the small ball 8, the small ball 8 does not receive outward thrust in the flying process, so the small ball 8 can be always contacted with the display panel 7 in the flying process, a sliding track is left on the display panel, the transparent plate 102 is smooth, no friction force is generated on the small ball 8, therefore, the small ball 8 can be thrown out a parabolic track, then the small ball 8 falls onto the inclined plane 105 due to gravity, and rolls to the bottom end of the inclined plane along the inclined plane on the inclined plane 105, and a plurality of groups of experiments need to be compared, therefore, the next experiment is needed, at this time, the position-locking groove 305 needs to be pulled to the position of the position-locking block 306 with the corresponding force, the fixing plate 301 is provided with a plurality of position-locking blocks 306, each position corresponds to one ejection force, then the position-locking groove 305 is rotated to enable the position-locking groove 305 to be locked on the position-locking block 306 again, the small ball 8 is placed at the pressing position again, the angle is adjusted, and the parabolic track display can be completed again by rotating the position-locking groove 305 again.

According to a specific embodiment, as shown in fig. 5 and 6, the compressing assembly includes: briquetting 501, connecting axle 502, third extension spring 503 and limiting plate 504, connecting axle 502 sliding connection is on transparent plate 102, third extension spring 503 overlaps on connecting axle 502, the front end and the connecting axle 502 fixed connection of third extension spring 503, the rear end and the transparent plate 102 fixed connection of third extension spring 503, the cover has limiting plate 504 on the connecting axle 502, limiting plate 504 and connecting axle 502 fixed connection, limiting plate 504 and transparent plate 102 sliding connection, briquetting 501 fixed connection is in the rear end of connecting axle 502, briquetting 501 and transparent plate 102 contact.

The pressing component is used for fixing the position of the small ball 8, the initial position of the small ball 8 is the same, ejection is convenient, the periphery of the pressing block 501 is an inclined plane, the small ball 8 is convenient to press again, a depression is formed in the pressing block 501, the small ball 8 is just clamped into the pressing block, the third tension spring 503 in a stretching state is restored after the small ball 8 is ejected, the connecting shaft 502 is driven to move inwards, the pressing plate is stopped after being limited after the limiting plate 504 is contacted with the transparent plate 102, when the small ball 8 is pressed again, the pressing plate can be firstly extruded, the pressing plate is made to push the connecting shaft 502, the third tension spring 503 is stretched, and the small ball 8 is pressed again after being sunk into the pressing plate.

According to a specific embodiment, as shown in fig. 7, the device further comprises a blocking assembly comprising: spacing axle 601 and fourth extension spring 602, spacing axle 601 sliding connection is on fixed plate 301, and the cover has fourth extension spring 602 on spacing axle 601, and the rear end and the spacing axle 601 fixed connection of fourth extension spring 602, the front end and the fixed plate 301 fixed connection of fourth extension spring 602.

After to marble subassembly angle of adjustment, it is accurate inadequately to control the angle for the people, consequently, added the screens subassembly, be provided with the recess on the shell 101, when marble subassembly rotated, will drive the screens subassembly and rotate, spacing axle 601 will break away from the recess, tensile fourth extension spring 602, after changeing corresponding position, receive the effect of fourth extension spring 602 pulling force, spacing axle 601 can be absorbed in the recess again, block the position of marble subassembly, several fixed angles have so.

According to a particular embodiment, as shown in fig. 1 and 3, the device further comprises a cleaning assembly comprising: the cleaning device comprises a fixing rod 401, a spring 402 and a cleaning pad 403, wherein the fixing rod 401 is connected to the upper end of the shell 101 in a sliding mode, the spring 402 is sleeved on the fixing rod 401, the upper end of the spring 402 is in contact with the fixing rod 401, the lower end of the spring 402 is in contact with the shell 101, the cleaning pad 403 is fixedly connected to the lower end of the fixing rod 401, and the cleaning pad 403 is in close contact with the transparent plate 102.

After the experiment is completed, the transparent plate 102 can be stained with ink possibly, which is not beneficial to observing the track of the next experiment, so that the transparent plate 102 needs to be cleaned by using a cleaning component, the fixing rod 401 is pressed down, the spring 402 is compressed, the fixing rod 401 drives the cleaning pad 403 to move down, the cleaning pad 403 is in close contact with the transparent plate 102, the residual ink on the transparent plate 102 can be cleaned and adsorbed, after the fixing rod 401 is loosened, the cleaning component is restored to the original position under the action of the spring 402, and the cleaning component can be pressed down for multiple times until the cleaning is completed.

According to a specific embodiment, as shown in fig. 3, the device further comprises a ball pushing assembly comprising: the device comprises a push-pull rod 201, a support block 202 and a first tension spring 203, wherein the push-pull rod 201 is connected to the lower end of the shell 101 in a sliding mode, the support block 202 is fixedly connected to the upper end of the push-pull rod 201, the support block 202 is connected with the shell 101 in a sliding mode, the support block 202 is connected with the transparent plate 102 in a sliding mode, the support block 202 is connected with the inclined plane 105 in a sliding mode, the push-pull rod 201 is sleeved with the first tension spring 203, one end of the first tension spring 203 is fixedly connected with the shell 101, and the other end of the first tension spring 203 is fixedly connected with the support block 202.

After the ball 8 is ejected once, the ball 8 slides down to the bottom of the inclined plane plate 105 along the inclined plane plate 105, and stays in the concave position on the support block 202 after impacting the shell 101, at this time, the push-pull rod 201 is pulled downwards, the support block 202 moves downwards along with the push-pull rod, the ball 8 on the support block 202 also moves downwards and moves downwards to the cavity below the inclined plane plate 105, ink is filled in the cavity, the liquid level of the ink has a certain distance from the inclined plane plate 105, the density of the ball 8 is greater than that of the ink, so the ball 8 cannot be separated from the support block 202 due to buoyancy, after the ball 8 absorbs the ink, the push-pull rod 201 is pushed upwards, the first tension spring 203 is pulled, the periphery of the support block 202 is inclined, so the ink cannot be brought out in the upward moving process, the ball 8 moves upwards until the ball 8 contacts the pressing block 501 and falls into the pressing assembly again, and at this time, the push-pull rod 201 is released, and the ball-pushing assembly returns to the original position under the action of the first tension spring 203.

In the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance: the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present invention, the terms "upper", "lower", "left", "right", "middle", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A dynamic demonstration device for mathematics parabola in junior middle school is characterized by comprising: dustcoat subassembly, marble subassembly, compress tightly subassembly, pellet (8) and display panel (7), the dustcoat subassembly is the casing of device, marble subassembly rotates to be connected in the one end of dustcoat subassembly, compress tightly the subassembly sliding connection in one side of dustcoat subassembly, pellet (8) one end with compress tightly the subassembly contact, the other end of pellet (8) with the dustcoat subassembly contact, sliding connection has the display panel (7) on the dustcoat subassembly, the dustcoat subassembly includes: the wall-mounted power unit comprises a housing (101), a transparent plate (102), a slope plate (105) and a suspension assembly, wherein the suspension assembly is fixedly connected with the housing (101), the suspension assembly is used for being suspended on a wall, the transparent plate (102) is fixedly connected with the housing (101), the slope plate (105) is fixedly connected inside the housing (101), the slope plate (105) is fixedly connected with the transparent plate (102), the suspension assembly is fixedly connected to one side of the housing (101), and the suspension assembly comprises: couple (103) and supporting pad (104), two couple (103) interval certain distance fixed connection in shell (101) one side, two supporting pad (104) with shell (101) fixed connection, two supporting pad (104) are located the below of couple (103), the marble subassembly includes: fixed plate (301), resilience post (302), supporting shoe (303), second extension spring (304), screens groove (305), screens piece (306) and pivot (307), it is connected with pivot (307) to rotate on shell (101), fixedly connected with is gone up in pivot (307) fixed plate (301), one side fixedly connected with of fixed plate (301) supporting shoe (303), sliding connection has on supporting shoe (303) resilience post (302), the cover has on resilience post (302) second extension spring (304), the one end of second extension spring (304) with resilience post (302) fixed connection, the other end of second extension spring (304) with supporting shoe (303) fixed connection, resilience post (302) one end rotates and is connected with screens groove (305), screens piece (306) have at least one, screens piece (306) fixed connection in one side of fixed plate (301), one end of the clamping block (306) is contacted with the clamping groove (305), and the pressing component comprises: briquetting (501), connecting axle (502), third extension spring (503) and limiting plate (504), connecting axle (502) sliding connection in on transparent plate (102), third extension spring (503) cover is in on connecting axle (502), the one end of third extension spring (503) with connecting axle (502) fixed connection, the other end of third extension spring (503) with transparent plate (102) fixed connection, the cover has on connecting axle (502) limiting plate (504), limiting plate (504) with connecting axle (502) fixed connection, limiting plate (504) with transparent plate (102) sliding connection, the one end fixed connection of connecting axle (502) briquetting (501), briquetting (501) with transparent plate (102) contact.

2. A dynamic demonstrator for the mathematics of beginners and middle school parabolas according to claim 1, characterized in that said display panel (7) is a rigid plate with a water-absorbent paper stuck on it.

3. A dynamic demonstration device for junior middle school mathematics parabola, according to claim 1, wherein said small ball (8) is a sphere with water absorption and density higher than water.

4. The dynamic demonstration apparatus for junior middle school mathematics parabola, according to claim 1, further comprising a position-locking component, said position-locking component comprising: spacing axle (601) and fourth extension spring (602), spacing axle (601) sliding connection in on fixed plate (301), the cover has on spacing axle (601) fourth extension spring (602), the one end of fourth extension spring (602) with spacing axle (601) fixed connection, the other end of fourth extension spring (602) with fixed plate (301) fixed connection.

5. The dynamic demonstrator of claim 2, further comprising a cleaning assembly, said cleaning assembly comprising: the cleaning device comprises a fixing rod (401), a spring (402) and a cleaning pad (403), wherein the fixing rod (401) is connected to one end of the shell (101) in a sliding mode, the spring (402) is sleeved on the fixing rod (401), one end of the spring (402) is in contact with the fixing rod (401), the other end of the spring (402) is in contact with the shell (101), one end of the fixing rod (401) is fixedly connected with the cleaning pad (403), and the cleaning pad (403) is in contact with the transparent plate (102).

6. A junior middle school mathematics parabola dynamic demonstration device according to claim 2, further comprising a ball pushing assembly, said ball pushing assembly comprising: push-and-pull rod (201), tray (202) and first extension spring (203), push-and-pull rod (201) sliding connection in the one end of shell (101), the one end fixedly connected with of push-and-pull rod (201) tray (202), tray (202) with shell (101) sliding connection, tray (202) with transparent plate (102) sliding connection, tray (202) with inclined plane board (105) sliding connection, the cover has on push-and-pull rod (201) first extension spring (203), the one end of first extension spring (203) with shell (101) fixed connection, the other end of first extension spring (203) with tray (202) fixed connection.

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