Probability statistics demonstration model

Abstract

The utility model discloses a probability statistics demonstration model, specifically relates to mathematics teaching appliance technical field, including demonstration box, seal head and two support plate, the outer wall of demonstration box is equipped with the visual window, and the inside of demonstration box is equipped with the cavity that runs through up and down, the inside middle lower end of the cavity is equipped with the movable support plate, and the movable support plate is equipped with the seal head. An overturning assembly is arranged between the movable supporting plate and the demonstration box, the overturning assembly is used for achieving overturning of the movable supporting plate, and the end socket is detachably arranged above the demonstration box. When coin insertion demonstration is carried out, the demonstration box can prevent coins from rolling farther, through the arrangement of the movable supporting plate and the overturning assembly, when coins on the movable supporting plate are recycled, the movable supporting plate can be inclined through the overturning assembly, a channel is formed between the edge of the movable supporting plate and the inner wall of the cavity, and the coins on the movable supporting plate can be recycled. The coins can slide down through the channel and then fall into the recycling box in a concentrated manner, so that the coins can be recycled conveniently and quickly without being picked up one by one by personnel, the recycling time is greatly saved, and the coin recycling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mathematics teaching tools, in particular to a probability statistics demonstration model. Background Art

[0002] Mathematics is an important subject and an essential basic tool for learning and studying modern science and technology. Mathematical knowledge is extensive, among which probability and statistics is a branch of mathematics. In the process of probability teaching, in order to let students intuitively understand the distribution and statistics of probability, teachers usually demonstrate in class. Currently, the most common method is to toss a coin to count the random probability of the front or back facing up.

[0003] At present, during the coin tossing demonstration, students or teachers throw coins on the desk or the ground, and then count them. After the coin is thrown, it needs to be picked up and thrown again to achieve a large number of statistics. Since the coin is easy to roll to multiple positions after being thrown, it is time-consuming and laborious for personnel to manually recover the coins one by one. Based on this, a probability statistical demonstration model is proposed here to achieve rapid recovery of coins after tossing. Utility Model Content

[0004] The purpose of the utility model is to provide a probability statistics demonstration model to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above object, the utility model provides the following technical solution: a probability statistics demonstration model, comprising:

[0006] A demonstration box, wherein a visual window is installed on the outer wall of the demonstration box, and a cavity is provided inside the demonstration box which passes through from top to bottom, a movable support plate is provided at the middle and lower end of the cavity, and a flip assembly is provided between the movable support plate and the demonstration box, and the flip assembly is used to realize the flipping of the movable support plate;

[0007] A sealing head, which is detachably arranged above the demonstration box and has a coin insertion hole that penetrates the cavity;

[0008] Two support plates are symmetrically connected to two sides of the bottom end of the demonstration box, and a recovery box is detachably arranged between the two support plates.

[0009] Preferably, the flip assembly comprises:

[0010] A mounting groove, wherein the mounting groove is provided in the movable support plate, and a limiting groove is provided on a side wall of the mounting groove;

[0011] A mounting rod, wherein the mounting rod is arranged in the mounting groove, and an outer wall of the mounting rod is connected to a limiting strip matched with the limiting groove;

[0012] A connecting rod, the connecting rod being connected to the outer end of the mounting rod and extending to the outside of the demonstration box;

[0013] A twist strip is fixed to the outer end of the connecting rod.

[0014] Preferably, a positioning rod is passed through the twisting strip, and a positioning hole is opened on the outer wall of the demonstration box, and the end of the positioning rod can be embedded in the positioning hole.

[0015] Preferably, a docking groove is provided on the upper end surface of the demonstration box near the edge, and a docking rod is connected to the bottom end of the head near the edge, and the docking rod is inserted and matched with the docking groove.

[0016] Preferably, the inner diameter of the coin slot is smaller than the inner diameter of the cavity.

[0017] Preferably, a coin hopper is provided on the upper surface of the head and located at the coin hole, and a surrounding plate is provided on the upper surface of the head and located at the periphery of the coin hopper.

[0018] Preferably, support bars are fixed to opposite sides of the two support plates, and the recycling box is placed on the support bars.

[0019] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0020] The utility model can prevent the coins from rolling far when the coin-operated demonstration is carried out, and the movable support plate and the flip assembly are arranged. When the coins on the movable support plate are recovered, the flip assembly can tilt the movable support plate, so that a channel is generated between the edge of the movable support plate and the inner wall of the cavity, and the coins can slide down through the channel and then fall into the recovery box in a concentrated manner. The coin recovery is convenient and fast, and there is no need for personnel to pick up the coins one by one, which greatly saves the recovery time and improves the coin recovery efficiency.

[0021] The demonstration box, the sealing head and the coin hopper of the utility model are connected by adopting an easily disassembled structure, which is convenient for quick assembly during use and also convenient for subsequent quick disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is an exploded view of the utility model;

[0024] Figure 2 This is the appearance diagram of the utility model;

[0025] Figure 3 It is a cross-sectional view of the demonstration box of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the connection between the positioning rod and the twisting strip of the utility model;

[0027] Figure 5 for Figure 3 Enlarged view of point A in .

[0028] Description of reference numerals:

[0029] 1. Demonstration box; 2. Visual window; 3. Cavity; 4. End cover; 5. Coin slot; 6. Coin hopper; 7. Twist strip; 8. Support plate; 9. Recycling box; 10. Docking rod; 11. Docking slot; 12. Enclosure; 13. Movable support plate; 14. Connecting rod; 15. Positioning rod; 16. Mounting slot; 17. Mounting rod; 18. Limiting slot; 19. Limiting strip; 20. Support strip. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The utility model provides Figure 1-3 A probability statistics demonstration model shown in the figure comprises a demonstration box 1, a head 4 and two support plates 8. A visual window 2 is installed on the outer wall of the demonstration box 1, through which the situation inside the demonstration box 1 can be visually observed, and a cavity 3 is provided inside the demonstration box 1, which is connected from top to bottom, and a movable support plate 13 is provided at the middle and lower ends of the cavity 3. The head 4 is detachably arranged above the demonstration box 1, and a coin slot 5 is provided on the head 4, which is connected with the cavity 3. The inner diameter of the coin slot 5 is smaller than the inner diameter of the cavity 3. The coin slot 5 is provided on the upper end surface of the head 4 and is located at a position A coin hopper 6 is provided at the position of the coin hole 5, and a surrounding plate 12 is provided on the upper end surface of the head 4 and located outside the coin hopper 6. When installing the coin hopper 6, the bottom end of the coin hopper 6 can be placed into the circle surrounded by the surrounding plate 12. The installation and disassembly are convenient and quick. Secondly, the setting of the coin hopper 6 is conducive to smooth coin insertion. The setting of the small inner diameter of the coin hole 5 can reduce the occurrence of coins falling on the movable support plate 13 in the cavity 3 bouncing and jumping out. In addition, when the interior of the cavity 3 is dirty, after the head 4 is removed, it is convenient to clean the interior of the cavity 3.

[0032] A flip assembly is provided between the movable support plate 13 and the demonstration box 1, and the flip assembly is used to realize the flipping of the movable support plate 13. Two support plates 8 are symmetrically connected to both sides of the bottom end of the demonstration box 1, and a recovery box 9 is detachably provided between the two support plates 8.

[0033] Specifically, a support bar 20 is fixed on one side opposite to the other of the two support plates 8, and the recycling box 9 is set on the support bar 20. The recycling box 9 is set and placed so as to facilitate its removal and placement.

[0034] Through the above technical solution:

[0035] When conducting a specific probability and statistics teaching demonstration in the field of mathematics, first ensure that the movable support plate 13 is in a horizontal state to block the bottom end of the cavity 3. Then, the demonstrator (student or teacher) can take a number of coins and put them into the coin hopper 6 one by one. The coins can fall into the cavity 3 from the coin hole 5 on the head 4, and then fall onto the movable support plate 13. Through the visual window 2, observe whether the coin that falls on the movable support plate 13 is facing up with the front or back facing up, and record it. In this way, after throwing a number of coins, the random probability of the front and back sides can be counted.

[0036] When it is necessary to recover the coins on the movable support plate 13, the movable support plate 13 is tilted by flipping the assembly, so that the coins on the movable support plate 13 can slide down through the bottom opening of the cavity 3 and fall into the recovery box 9. The coin recovery is convenient and fast, and there is no need for personnel to pick up the coins one by one, which greatly saves the recovery time and improves the coin recovery efficiency.

[0037] In a specific embodiment of the present invention, refer to Figure 2-Figure 5 As shown, the flip assembly includes:

[0038] A mounting groove 16, the mounting groove 16 is provided in the movable support plate 13, and a limiting groove 18 is provided on a side wall of the mounting groove 16;

[0039] A mounting rod 17, the mounting rod 17 is disposed in the mounting groove 16, and the outer wall of the mounting rod 17 is connected to a limiting strip 19 that matches the limiting groove 18;

[0040] A connecting rod 14, the connecting rod 14 is connected to the outer end of the mounting rod 17, and the connecting rod 14 extends to the outside of the demonstration box 1;

[0041] The twisting strip 7 is fixed to the outer end of the connecting rod 14 . When the twisting strip 7 is in a horizontal state, the movable support plate 13 is in a horizontal state. At this time, the movable support plate 13 completely blocks the cavity 3 .

[0042] Second, see Figure 4 As shown, a positioning rod 15 is passed through the twisting bar 7, and a positioning hole is opened on the outer wall of the demonstration box 1, and the end of the positioning rod 15 can be embedded in the positioning hole.

[0043] Through the above, the following description can be made for the flipping of the movable support plate 13:

[0044] When the twist bar 7 is in a horizontal state, the positioning rod 15 can pass through the twist bar 7 and be embedded in the positioning hole on the outer wall of the demonstration box 1, which can effectively limit the twist bar 7 and prevent it from rotating, so as to ensure that the movable support plate 13 is stable in a horizontal state.

[0045] When it is necessary to recover the coins on the movable support plate 13, the positioning rod 15 can be pulled out first to release the restriction of the positioning rod 15 on the twisting strip 7, and then the twisting strip 7 can be rotated, and the connecting rod 14 can be used to drive the installation rod 17 to rotate, so that the movable support plate 13 can be flipped and tilted, and a channel is generated between the edge of the movable support plate 13 and the inner wall of the cavity 3, and the coins can slide down through the channel and then fall into the recovery box 9.

[0046] In addition, see Figure 1 As shown, a docking groove 11 is provided on the upper end surface of the demonstration box 1 near the edge, and a docking rod 10 is connected to the bottom end of the head 4 near the edge, and the docking rod 10 is inserted and matched with the docking groove 11.

[0047] Specifically, when installing the end cap 4 on the demonstration box 1 , the docking rod 10 is aligned with the docking groove 11 and inserted, and the installation and subsequent disassembly are quick and convenient.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A probability statistics demonstration model, characterized in that: include: A demonstration box (1), wherein a visual window (2) is installed on the outer wall of the demonstration box (1), and a cavity (3) is provided inside the demonstration box (1) which passes through from top to bottom, a movable support plate (13) is provided at the middle and lower end of the cavity (3), and a flip assembly is provided between the movable support plate (13) and the demonstration box (1), and the flip assembly is used to realize the flipping of the movable support plate (13); A sealing head (4), the sealing head (4) being detachably arranged above the demonstration box (1), and having a coin insertion hole (5) which is in communication with the cavity (3); Two support plates (8), the two support plates (8) are symmetrically connected to two sides of the bottom end of the demonstration box (1), and a recovery box (9) is detachably provided between the two support plates (8).

2. A probability statistics demonstration model according to claim 1, characterized in that: The flip assembly comprises: A mounting groove (16), wherein the mounting groove (16) is provided in the movable support plate (13), and a limiting groove (18) is provided on a side wall of the mounting groove (16); A mounting rod (17), wherein the mounting rod (17) is disposed in the mounting groove (16), and an outer wall of the mounting rod (17) is connected to a limiting strip (19) that matches the limiting groove (18); A connecting rod (14), the connecting rod (14) being connected to the outer end of the mounting rod (17), and the connecting rod (14) extending to the outside of the demonstration box (1); A twisting strip (7), wherein the twisting strip (7) is fixed to the outer end of the connecting rod (14).

3. A probability statistics demonstration model according to claim 2, characterized in that: A positioning rod (15) is provided on the twisting strip (7), and a positioning hole is provided on the outer wall of the demonstration box (1), and the end of the positioning rod (15) can be embedded in the positioning hole.

4. A probability statistics demonstration model according to claim 1, characterized in that: The upper end surface of the demonstration box (1) is provided with a docking groove (11) near the edge, and the bottom end of the sealing head (4) is connected with a docking rod (10) near the edge, and the docking rod (10) is inserted and matched with the docking groove (11).

5. A probability statistics demonstration model according to claim 1, characterized in that: The inner diameter of the coin insertion hole (5) is smaller than the inner diameter of the cavity (3).

6. A probability statistics demonstration model according to claim 1, characterized in that: A coin hopper (6) is provided on the upper end surface of the sealing head (4) and located at the position of the coin insertion hole (5), and a surrounding plate (12) is provided on the upper end surface of the sealing head (4) and located at the periphery of the coin insertion hopper (6).

7. A probability statistics demonstration model according to claim 1, characterized in that: A support bar (20) is fixed on one side opposite to the two support plates (8), and the recovery box (9) is placed on the support bar (20).

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