CN111968464A - Probability mathematics bar statistical chart presentation device - Google Patents
Probability mathematics bar statistical chart presentation device Download PDFInfo
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- CN111968464A CN111968464A CN202010911322.7A CN202010911322A CN111968464A CN 111968464 A CN111968464 A CN 111968464A CN 202010911322 A CN202010911322 A CN 202010911322A CN 111968464 A CN111968464 A CN 111968464A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a probability mathematics bar statistical chart demonstration device, which comprises a main box body, wherein an installation frame is fixedly installed inside the main box body, a plurality of installation cavities are arranged inside the installation frame, a bar-shaped display assembly is installed inside each installation cavity, each bar-shaped display assembly is formed by sequentially sleeving a plurality of square cylinders, the upper end and the lower end of each square cylinder are respectively provided with a limiting reducing port and a limiting flange, electric telescopic rods are vertically installed inside the bar-shaped display assemblies, the upper end and the lower end of each electric telescopic rod are respectively and fixedly connected with the bar-shaped display assemblies and the installation cavities, a writing plate is installed on one side of the front surface of the main box body, which is close to the bottom of each bar-shaped display assembly, and a box cover is fixedly connected to one side. This kind of probability mathematics bar statistical chart presentation device, simple structure is reasonable, the modern design, easy operation to higher portability has, manufacturing cost is lower moreover, is suitable for extensive using widely.
Description
Technical Field
The invention relates to the technical field of teaching aids, in particular to a probability mathematics bar statistical chart demonstration device.
Background
The bar statistical chart is that a unit length is used for representing a certain number, straight bars with different lengths are drawn according to the number, and then the straight bars are arranged according to a certain sequence. The number of the various quantities is readily seen in the bar chart. The bar chart is generally called bar chart, also called long bar chart or straight bar chart for short.
In the teaching process, often need adopt presentation device to assist the teaching, for example to the study of mathematics probability bar statistical chart, adopt presentation device can make things convenient for the student to understand more directly perceived. Patent grant publication number "CN 107993528B" proposes a probability mathematics bar statistical chart presentation device, and the presentation device uses numerous parts, and realizes that "a plurality of bar display components can be inserted into the device to display the bar statistical chart, and the bar display components can be uniformly distributed on the upper end of the main transverse plate, so that students can watch the bar statistical chart conveniently; the length of the bar statistical graph displayed by the bar display component can be changed according to needs; and the device can demonstrate both horizontal and vertical bar graphs ". But the structure is more complicated, leads to manufacturing cost higher, and presentation device is inconvenient to carry moreover, leads to the teacher very inconvenient in the use. Therefore, we improve the above and provide a probability mathematical bar chart demonstration device.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a probability mathematics bar statistical chart demonstration device, which comprises a main box body, wherein an installation frame is fixedly installed in the main box body, a plurality of installation cavities are formed in the installation frame, a bar-shaped display assembly is installed in each installation cavity, the bar-shaped display assembly is formed by sequentially sleeving a plurality of square cylinders, the upper end and the lower end of each square cylinder are respectively provided with a limiting reducing opening and a limiting flange, electric telescopic rods are vertically installed in the bar-shaped display assemblies, the upper end and the lower end of each electric telescopic rod are respectively and fixedly connected with a bar-shaped display assembly and the installation cavities, a writing board is installed at the bottom, close to each bar-shaped display assembly, of one side of the front surface of the main box body, a box cover is fixedly connected with one side of the top end of the main box body through a hinge, and a sliding, the inside slidable mounting of spout has the slider, just the outside of slider is connected with the scale.
As a preferable technical scheme of the invention, the main box body and the box cover are fixedly and respectively connected with a buckle and a bayonet lock at one side far away from the hinge, and the bayonet lock can be mutually clamped with the buckle.
As a preferred technical scheme of the present invention, a plurality of sets of storage batteries are fixedly mounted at the bottom of the main box body near the mounting frame, and the storage batteries are respectively electrically connected to the electric telescopic rod through wires.
As a preferred technical solution of the present invention, a charging port is fixedly installed at one side of the main box, and a plurality of electric quantity indicating lamps are installed at one side close to the charging port, and the charging port and the electric quantity indicating lamps are electrically connected to the storage battery through wires, respectively.
As a preferable technical scheme of the invention, one end of the scale close to the connecting part of the sliding block is provided with a damping adjusting knob, one side of the damping adjusting knob is connected with a stud, the stud penetrates through the scale and the sliding block, the inner side of the sliding block is connected with a damping block through a bearing, and the damping block can be in mutual contact with the bottom of the sliding groove.
As a preferable technical scheme of the invention, the slider is provided with screw threads which are meshed with external threads of the stud at a contact part close to the stud, the scale is fixedly sleeved with a fixing ring at the contact part with the stud, and the diameter of the fixing ring is slightly larger than that of the stud.
As a preferable technical scheme of the invention, control buttons are respectively installed at the lower right part of the main box body close to each writing board, and the control buttons are respectively electrically connected with the adjacent electric telescopic rods through wires.
As a preferred technical scheme of the invention, the center of the top end of the box cover is provided with an installation groove, and handles are fixedly arranged at two ends of the installation groove through shafts.
The invention has the beneficial effects that: according to the probability mathematics bar statistical chart demonstration device, the bar display components are matched with the electric telescopic rods for use, so that the bar display components can be rapidly stretched and retracted, a teacher can rapidly adjust and use the bar display components conveniently, the display difference of each bar display component can be visually displayed to students through the matching use of the scale and the bar display components, the students can conveniently understand the bar display components, the teaching quality is improved, the bar display components can be rapidly accommodated integrally after being completely shrunk through the matching use of the main box body and the box cover, the portability of the device is improved, and the bar display components can be easily used by the teacher; the portable multifunctional desk has the advantages of simple and reasonable structure, novel design, simplicity in operation, higher portability, lower manufacturing cost and suitability for wide popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a probability mathematics bar chart demonstration device of the invention;
FIG. 2 is a schematic diagram of the internal structure of a main box of the probability mathematics bar chart demonstration device of the invention;
FIG. 3 is an enlarged schematic view A of FIG. 2 of a probabilistic mathematical bar chart demonstration apparatus of the present invention;
FIG. 4 is a schematic diagram of the internal structure of a chute of the probability mathematics bar chart demonstration device of the invention;
FIG. 5 is a schematic diagram of a contracted structure of a probability mathematics bar chart demonstration device of the invention.
In the figure: 1. a main box body; 2. a bar display component; 201. limiting and necking; 202. a limiting flange; 3. a box cover; 4. a scale; 5. writing a board; 6. buckling; 7. a bayonet lock; 8. a charging port; 9. a mounting frame; 10. installing a chamber; 11. an electric telescopic rod; 12. a storage battery; 13. a chute; 14. a damping adjustment knob; 15. a slider; 16. a stud; 17. a damping block; 18. a control button; 19. a handle.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-5, the probability mathematics bar-shaped statistical chart demonstration device of the invention comprises a main box body 1, wherein an installation frame 9 is fixedly installed inside the main box body 1, a plurality of installation chambers 10 are arranged inside the installation frame 9, a bar-shaped display component 2 is installed inside each installation chamber 10, the bar-shaped display component 2 is formed by sequentially sleeving a plurality of square cylinder bodies, the upper end and the lower end of each square cylinder body are respectively provided with a limit reducing mouth 201 and a limit flange 202, an electric telescopic rod 11 is vertically installed inside the bar-shaped display component 2, the upper end and the lower end of the electric telescopic rod 11 are respectively fixedly connected with the bar-shaped display component 2 and the installation chambers 10, a writing board 5 is installed at the bottom close to each bar-shaped display component 2 on one side of the front surface of the main box body 1, and a box cover 3 is fixedly connected with one side of the top end of the main, the front side of case lid 3 is provided with spout 13, the inside slidable mounting of spout 13 has slider 15, just the outside of slider 15 is connected with scale 4.
Wherein, the main box body 1 and the box cover 3 are fixedly and respectively fixedly connected with a buckle 6 and a bayonet 7 at one side far away from the hinge, and the bayonet 7 can be mutually clamped with the buckle 6.
The main box body 1 is fixedly provided with a plurality of groups of storage batteries 12 at the bottom close to the mounting frame 9, and the storage batteries 12 are respectively electrically connected with the electric telescopic rods 11 through wires.
Wherein, one side fixed mounting of main tank 1 has the mouth 8 that charges to be provided with a plurality of electric quantity indicating lamps in the one side that is close to the mouth 8 that charges, charge mouth 8 and electric quantity indicating lamp and equally divide respectively through wire and battery 12 electric connection.
Wherein, scale 4 installs damping adjust knob 14 near the one end of slider 15 junction, just one side of damping adjust knob 14 is connected with double-screw bolt 16, double-screw bolt 16 passes scale 4 and slider 15 to be connected with damping piece 17 through the bearing in slider 15's inboard, damping piece 17 can contact each other with the tank bottom of spout 13.
The contact part of the sliding block 15 close to the stud 16 is provided with threads meshed with the external threads of the stud 16, the contact part of the scale 4 and the stud 16 is fixedly sleeved with a fixing ring, and the diameter of the fixing ring is slightly larger than that of the stud 16.
Wherein, control button 18 is equally installed respectively near every lower right side of writing board 5 to main tank 1, just control button 18 equally divide respectively through wire and the electric connection of close electric telescopic handle 11.
Wherein, the top center department of case lid 3 is provided with the mounting groove to pass through axle fixed mounting at the both ends of mounting groove and have handle 19.
The working principle is as follows: when the teaching device is used, the storage battery 12 in the main box body 1 is fully charged, then when teaching is carried out, the clamping between the clamping buckle 6 and the clamping pin 7 can be released, the box body 3 is opened, the box cover 3 and the box body are perpendicular to each other, finally the height of each bar-shaped display assembly 2 is adjusted according to data, and the scale 4 is horizontally arranged at a proper height by rotating the damping adjusting knob 14, so that comparative teaching is realized. This kind of probability mathematics bar statistical chart presentation device, cooperation through bar display module 2 and electric telescopic handle 11 is used, the quick flexible of bar display module 2 has been realized, and then the teacher quick adjustment of being convenient for uses, cooperation through scale 4 and bar display module 2 is used, can audio-visually show every bar display module 2's display difference to the student, and then the student of being convenient for understands, improve the teaching quality, cooperation through main tank 1 and case lid 3 is used, realized finishing the back at bar display module 2 shrink, accomodate the holistic fast of device, and then be convenient for improve the device portability, the teacher of being convenient for easily uses.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (8)
1. The probability mathematics bar statistical chart demonstration device comprises a main box body (1) and is characterized in that an installation frame (9) is fixedly installed inside the main box body (1), a plurality of installation chambers (10) are arranged inside the installation frame (9), each installation chamber (10) is internally provided with a bar display module (2), each bar display module (2) is formed by sequentially sleeving a plurality of square barrel bodies, each square barrel body is provided with a limiting reducing opening (201) and a limiting flange (202) at the upper end and the lower end in an equal-dividing mode, an electric telescopic rod (11) is vertically installed inside the bar display module (2), the upper end and the lower end of the electric telescopic rod (11) are respectively fixedly connected with the bar display module (2) and the installation chambers (10), a writing board (5) is installed at the bottom, close to each bar display module (2), of one side of the front of the main box body (1), the utility model discloses a safe and convenient case cover, including main tank body (1), hinge fixedly connected with case lid (3) are passed through to one side in main tank body (1) top, openly one side of case lid (3) is provided with spout (13), the inside slidable mounting of spout (13) has slider (15), just the outside of slider (15) is connected with scale (4).
2. The probability mathematics bar chart presentation device of claim 1, characterized in that, the main box body (1) and case lid (3) are at the one side of keeping away from the hinge fixedly connected with buckle (6) and bayonet lock (7) respectively, and bayonet lock (7) can with buckle (6) mutual block.
3. The probability mathematics bar chart presentation device of claim 1, characterized in that, the main box (1) is near the bottom of installation frame (9) fixed mounting has multiunit battery (12), and battery (12) pass through the wire respectively with electric telescopic handle (11) electric connection.
4. The probability mathematics bar chart presentation device of claim 3, characterized by, that one side of the main box (1) is fixedly installed with charge mouth (8), and is provided with a plurality of electric quantity indicator lamps on the side near charge mouth (8), charge mouth (8) and electric quantity indicator lamp are all through wire and battery (12) electric connection respectively.
5. The probability mathematics bar chart presentation device of claim 1, characterized by, the scale (4) is installed damping adjust knob (14) near the one end of slider (15) junction, and one side of damping adjust knob (14) is connected with double-screw bolt (16), double-screw bolt (16) pass scale (4) and slider (15), and be connected with damping piece (17) through the bearing in the inboard of slider (15), damping piece (17) can contact with the tank bottom of spout (13) each other.
6. A probability mathematics bar chart demonstration device according to claim 5, characterized in that the slide block (15) is provided with screw teeth which are engaged with the external screw thread of the stud (16) near the contact part of the stud (16), the scale (4) is fixedly sleeved with a fixed ring at the contact part of the stud (16), and the diameter of the fixed ring is slightly larger than that of the stud (16).
7. The bar chart demonstrator of probabilistic mathematics as in claim 1, wherein said main box (1) is equipped with control buttons (18) near the lower right of each writing board (5), and said control buttons (18) are electrically connected to the adjacent electric telescopic rods (11) through wires.
8. The bar chart demonstration device for probability mathematics according to claim 1 is characterized in that the top center of the box cover (3) is provided with a mounting groove, and handles (19) are fixedly mounted at two ends of the mounting groove through shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010911322.7A CN111968464A (en) | 2020-09-02 | 2020-09-02 | Probability mathematics bar statistical chart presentation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010911322.7A CN111968464A (en) | 2020-09-02 | 2020-09-02 | Probability mathematics bar statistical chart presentation device |
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| CN111968464A true CN111968464A (en) | 2020-11-20 |
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| CN202010911322.7A Pending CN111968464A (en) | 2020-09-02 | 2020-09-02 | Probability mathematics bar statistical chart presentation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112814657A (en) * | 2021-02-25 | 2021-05-18 | 中国科学院地质与地球物理研究所 | Supporting device and test equipment |
| WO2022179038A1 (en) * | 2021-02-25 | 2022-09-01 | 中国科学院地质与地球物理研究所 | Alternating stress fatigue testing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112814657A (en) * | 2021-02-25 | 2021-05-18 | 中国科学院地质与地球物理研究所 | Supporting device and test equipment |
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Application publication date: 20201120 |
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