Mathematical probability statistics demonstration device

Abstract

The utility model discloses a mathematical probability statistics demonstration device which comprises a base, the top end of the base is fixedly connected with a machine body, the machine body is provided with a cavity, the inner wall of the cavity is fixedly connected with a baffle plate, the upper end of the baffle plate is provided with an avoiding hole, a shunting column is slidably connected in the avoiding hole, one end of the shunting column is provided with an adjusting plate, and the shunting column is fixedly connected to the adjusting plate. One side of the machine body is provided with a hole, the sliding block is slidably connected in the hole, the sliding block is provided with a fixing assembly, the fixing assembly is used for fixing the adjusting plate, the lower end of the machine body is fixedly connected with a connecting base, the connecting base is magnetically connected with a partition plate, the top end of the machine body is fixedly connected with a ball inlet, and the front side of the machine body is provided with a box opening; a box door is rotationally connected to the front side of the machine body. According to the utility model, the density of the shunting columns is adjusted through the adjusting assembly, so that the device can obtain a plurality of different probability events, and students can feel probability distribution more visually.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching demonstration, and in particular relates to a mathematical probability statistics demonstration device. Background Art

[0002] Probability is a measure of the likelihood of a random event. The greater the likelihood of a random event, the greater the probability. Using probability theory as a basis to study random phenomena in order to make reasonable estimates and judgments on the objective regularity of random phenomena has been widely used in various fields such as insurance and actuarial science. However, many students often find the course abstract and difficult to understand, so more and more teachers use probability demonstration models to assist in teaching in the classroom. Most of the existing demonstrations and simulations of mathematical probability use coin-tossing experiments or ball-tossing experiments. Since there are many uncontrollable factors in coin-tossing experiments and they are not easy to count, most of them use ball-tossing experiments to verify the degree of occurrence of probability events by the number of balls entering different positions.

[0003] However, there are some problems with the prior art: the diversion column and the dividing plate of the existing mathematical probability and statistics demonstration device are fixed, and the probability demonstration obtained during the probability demonstration is too single and cannot demonstrate multiple probability events. Therefore, we propose a mathematical probability and statistics demonstration device. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a mathematical probability statistics demonstration device, which can adjust the density of the diversion column by adjusting the components, so that the device can obtain a variety of different probability events.

[0005] The utility model is implemented as follows: a mathematical probability statistics demonstration device comprises a base, the top end of the base is fixedly connected to an organism, the organism is provided with a cavity, the inner wall of the cavity is fixedly connected to a baffle, the upper end of the baffle is provided with an avoidance hole, a diversion column is slidably connected in the avoidance hole, one end of the diversion column is provided with an adjustment component, the lower end of the organism is fixedly connected to a connecting seat, the connecting seat is detachably connected to a partition plate, and the top end of the organism is fixedly connected to a ball inlet.

[0006] Optionally, the adjustment component includes an adjustment plate, the diverter column is fixedly connected to the adjustment plate, a slider is fixedly connected to one end of the adjustment plate, a hole is opened on one side of the body, the slider is slidably connected in the hole, and a fixing component is arranged on the slider, which is used to fix the adjustment plate.

[0007] Optionally, a slideway is fixedly connected to the inner wall of the cavity of the machine body, and the other end of the adjustment plate slides in the slideway.

[0008] Optionally, the fixing component includes a spring, grooves are provided on both sides of the slider, one end of the spring is fixedly connected to the inner wall of the groove, the other end of the spring is fixedly connected to a card block, the inner wall of the body hole is provided with a card slot adapted to the card block, and the card block is carded in the card slot.

[0009] Optionally, a placement groove is opened at the upper end of the connecting seat, a first magnet is fixedly connected to the inner wall of the placement groove, a second magnet is fixedly connected to the bottom end of the partition plate, and the partition plate and the connecting seat are magnetically connected through the first magnet and the second magnet.

[0010] Optionally, a box opening is opened on the front side of the body, a hinge is fixedly connected to the front side of the body, a box door is fixedly connected to the hinge, the box door is rotatably connected to the front side of the body through the hinge, and a handle is fixedly connected to the upper end of the box door for closing the box opening.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model is provided with an adjustment component, and the adjustment plate can be slid by sliding the slider, so that the shunt column can slide, so that part of the shunt column can slide into the baffle, and the density of the external shunt column can be adjusted, so as to obtain a variety of different probability events, so that students can feel the probability distribution more intuitively.

[0013] 2. The utility model is provided with a first magnet and a second magnet on the partition plate and the connecting seat respectively, so that the partition plate can be disassembled. By changing the size and number of the storage slots for storing the balls by disassembling the number of partition plates, a variety of different probability events can also be obtained.

[0014] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram provided by the utility model;

[0016] Figure 2 It is a cross-sectional view of the machine body provided by the utility model;

[0017] Figure 3 The utility model provides Figure 2 A magnified schematic diagram of point A;

[0018] Figure 4 It is a schematic diagram of the adjustment plate provided by the utility model;

[0019] Figure 5 It is a cross-sectional view of a slider provided by the utility model.

[0020] In the figure:

[0021] 1. Base; 2. Machine body; 3. Baffle; 4. Diverter column; 5. Adjustment assembly; 501. Adjustment plate; 502. Slider; 503. Slide; 6. Connecting seat; 7. Partition plate; 8. Inlet; 9. Fixing assembly; 901. Spring; 902. Block; 10. First magnet; 11. Second magnet; 12. Hinge; 13. Door; 14. Handle. DETAILED DESCRIPTION

[0022] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0028] like Figures 1 to 5 As shown, a mathematical probability statistics demonstration device provided by an embodiment of the utility model includes a base 1, which is a rectangular parallelepiped, made of wood material, and coated with anti-corrosion material on the surface. Of course, the shape of the base 1 is not limited to a rectangular parallelepiped, and can also be set to other shapes such as a cylinder.

[0029] A body 2 is fixedly connected to the top of the base 1. The body 2 is a rectangular parallelepiped and is divided into two parts. One part is a back seat, which is made of wood, but is not limited to wood. It can also be made of other materials such as plastic. The other part is a front cover, which is made of glass, but other transparent materials such as transparent plastic can also be used. A box opening is provided on the front cover of the body 2. A hinge 12 is fixedly connected to the front side of the body 2. A box door 13 is fixedly connected to the hinge 12. The box door 13 is used to close the box opening. The box door 13 is rotatably connected to the front side of the body 2 through the hinge 12. A handle 14 is also fixedly connected to the upper end of the box door 13 for opening the box door 13.

[0030] A cavity is opened in the body 2, and a baffle 3 is fixedly connected to the inner wall of the cavity. An avoidance hole is opened at the upper end of the baffle 3, and a diverter column 4 is slidably connected in the avoidance hole. An adjustment component 5 is provided at one end of the diverter column 4, and the adjustment component 5 includes an adjustment plate 501. The diverter column 4 is fixedly connected to the adjustment plate 501, and a slider 502 is fixedly connected to one end of the adjustment plate 501. A hole is opened on one side of the body 2, and the slider 502 is slidably connected in the hole. Moving the adjustment plate 501 can make the diverter column 4 slide in the avoidance hole of the baffle 3.

[0031] A fixing component 9 is provided on the slider 502, and the fixing component 9 is used to fix the adjustment plate 501. The fixing component 9 includes a spring 901. Grooves are provided on both sides of the slider 502. One end of the spring 901 is fixedly connected to the inner wall of the groove, and the other end of the spring 901 is fixedly connected to a clamping block 902. A clamping groove adapted to the clamping block 902 is provided on the inner wall of the hole of the body 2, and the clamping block 902 is clamped in the clamping groove. The slider 502 is fixed by the clamping block 902 in the fixing component 9, thereby fixing the adjustment plate 501.

[0032] A slideway 503 is fixedly connected to the inner wall of the cavity of the machine body 2 , and the other end of the adjustment plate 501 slides in the slideway 503 .

[0033] When the slider 502 slides left and right, it will drive the adjustment plate 501 to slide left and right in the slideway 503. When the adjustment plate 501 slides left and right, it will drive the diverter column 4 fixed thereon to slide left and right in the avoidance hole on the baffle 3. When the block 902 on the slider 502 slides to the slot on the body 2, the block 902 is connected to the slot by the elastic force of the spring 901, and the slider 502 stops sliding, and the adjustment plate 501 and the diverter column 4 thereon stop sliding, so that the diverter column 4 is fixed.

[0034] The card slots on the body 2 are divided into a left card slot and a right card slot. When the card block 902 is connected to the left card slot, the diverter column 4 is in a state of extending out of the baffle 3. When the card block 902 is connected to the right card slot, the diverter column 4 is in a state of retracting into the baffle 3. The position of the diverter column 4 can be adjusted to adjust the density of the diverter column 4.

[0035] A connecting seat 6 is fixedly connected to the lower end of the body 2, and a partition plate 7 is detachably connected to the connecting seat 6. A placement groove is opened at the upper end of the connecting seat 6, and a first magnet 10 is fixedly connected to the inner wall of the placement groove. A second magnet 11 is fixedly connected to the bottom end of the partition plate 7. The partition plate 7 and the connecting seat 6 are magnetically connected through the first magnet 10 and the second magnet 11.

[0036] When performing a demonstration, the box door 13 can be opened and a portion of the partition plates 7 can be taken out, so that the distance between the partition plates 7 changes, thereby changing the probability event.

[0037] A goal hole 8 is fixedly connected to the top of the body 2. The goal hole 8 is set in a funnel shape and is used to put a small ball used for probability demonstration into the device.

[0038] The working principle of the utility model is as follows:

[0039] When the utility model is performing a probability demonstration, the slider 502 can be pushed to move the adjustment plate 501, and the movement of the adjustment plate 501 causes the diverter column 4 to move. When the slider 502 moves to the card slot, the card block 902 on the slider 502 is carded in the card slot, the slider 502 no longer slides, and the diverter column 4 no longer moves, thereby allowing different diverter columns 4 to retract into the baffle 3 or extend out of the baffle 3, so that the density of the diverter columns 4 changes, thereby obtaining different probability events, allowing students to feel the probability distribution more intuitively.

[0040] The utility model can also open the box door 13, and then remove part of the partition plate 7 magnetically connected to the connecting seat 6, so that the distance between the partition plates 7 is changed, and the number of intervals between the partition plates 7 is also changed, so that different probability events can be obtained, which makes students feel more deeply.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mathematical probability statistics demonstration device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a body (2), the body (2) is provided with a cavity, the inner wall of the cavity is fixedly connected to a baffle (3), the upper end of the baffle (3) is provided with an avoidance hole, a diversion column (4) is slidably connected in the avoidance hole, an adjustment component (5) is provided at one end of the diversion column (4), the lower end of the body (2) is fixedly connected to a connecting seat (6), a partition plate (7) is detachably connected to the connecting seat (6), and the top of the body (2) is fixedly connected to a ball inlet (8).

2. A mathematical probability statistics demonstration device according to claim 1, characterized in that: The adjustment component (5) comprises an adjustment plate (501), the diverter column (4) is fixedly connected to the adjustment plate (501), one end of the adjustment plate (501) is fixedly connected to a slider (502), one side of the body (2) is provided with a hole, the slider (502) is slidably connected in the hole, and a fixing component (9) is arranged on the slider (502), and the fixing component (9) is used to fix the adjustment plate (501).

3. A mathematical probability statistics demonstration device according to claim 2, characterized in that: A slideway (503) is fixedly connected to the inner wall of the cavity of the machine body (2), and the other end of the adjustment plate (501) slides in the slideway (503).

4. A mathematical probability statistics demonstration device according to claim 2, characterized in that: The fixing assembly (9) comprises a spring (901), grooves are provided on both sides of the slider (502), one end of the spring (901) is fixedly connected to the inner wall of the groove, the other end of the spring (901) is fixedly connected to a clamping block (902), the inner wall of the hole of the body (2) is provided with a clamping groove adapted to the clamping block (902), and the clamping block (902) is clamped in the clamping groove.

5. A mathematical probability statistics demonstration device according to claim 1, characterized in that: The upper end of the connection seat (6) is provided with a placement groove, the inner wall of the placement groove is fixedly connected to a first magnet (10), the bottom end of the partition plate (7) is fixedly connected to a second magnet (11), and the partition plate (7) and the connection seat (6) are magnetically connected via the first magnet (10) and the second magnet (11).

6. A mathematical probability statistics demonstration device according to claim 1, characterized in that: The front side of the machine body (2) is provided with a box opening, the front side of the machine body (2) is fixedly connected with a hinge (12), the hinge (12) is fixedly connected with a box door (13), the box door (13) is rotatably connected to the front side of the machine body (2) via the hinge (12), the upper end of the box door (13) is fixedly connected with a handle (14), and the box door (13) is used to close the box opening.

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