Mathematical probability demonstration device

Abstract

The utility model discloses a mathematical probability demonstration device, and relates to the technical field of probability demonstration. The storage frame is fixedly assembled at the top of the base and is used for observing and collecting coins; the placing table is fixedly assembled at the top of the base through a supporting plate and is used for placing coins; the ejection mechanism is fixedly arranged at the top of the supporting plate and used for pushing and ejecting the coins on the top of the placing table, through the structural design, an operator can conveniently test the probability, the operator does not need to manually eject the coins, and the coins on the placing table can be automatically thrown.

Description

Technical Field

[0001] The present application relates to the technical field of probability demonstration, and more specifically, to a mathematical probability demonstration device. Background Art

[0002] Mathematical probability is a branch of classical probability theory, which studies the probability of occurrence of random events. Probability is a number between 0 and 1, which is used to represent the possibility of an event. In mathematical probability, we can use mathematical methods to calculate and describe the probability of an event. In mathematical probability, there are also some important concepts and theorems, such as independent events, conditional probability, Bayes' theorem, expected value and variance. These concepts and theorems provide us with tools to understand and analyze random events more deeply. Mathematical probability is widely used in various fields, such as statistics, finance, physics, engineering, etc. It can not only help us understand and predict the occurrence of random events, but also provide a theoretical basis for decision-making and risk management.

[0003] The existing patent publication number CN215834098U provides a mathematical probability demonstration device, which includes a bottom plate and an ejection device, and the ejection device includes a support plate, a fixed plate, a slide, a storage platform, a pull rod, a push plate and a spring; the slide is located at the left end of the support plate, and the lower surface of the slide is connected to the upper surface of the support plate; the storage platform is located at the left end of the slide and connected to the upper surface of the slide; the upper surface of the storage platform is provided with a groove; the lower surface of the fixed plate is connected to the upper surface of the support plate, the fixed plate is located on the right side of the slide, the fixed plate is provided with a through hole, the pull rod is connected to the push plate, the spring is sleeved on the pull rod, and the pull rod passes through the through hole and is slidably connected to the through hole; the push plate is elastically connected to the fixed plate through the spring, and the push plate is slidably connected to the slide; the bottom plate is provided with a baffle, a vertical plate, and a recording rod from left to right; the lower surface of the support plate is connected to the vertical plate and the recording rod. The ejection device simulates the process of tossing a coin, and the coin falls on the bottom plate after being thrown, which is convenient for observing and collecting coins, saving time and effort, and convenient for recording and observation.

[0004] However, the device still has some shortcomings in use. Each time a coin is ejected, the tester needs to manually push and pull the pull rod to complete the coin ejection operation. Its convenience needs to be improved. Moreover, when ejecting multiple coins at the same time, there is no limit between the coins, and there is a situation where the coins collide with each other. Based on the above problems, we provide a mathematical probability demonstration device.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the present application provides a mathematical probability demonstration device.

[0007] The mathematical probability demonstration device provided in this application adopts the following technical solution:

[0008] A mathematical probability demonstration device comprises a base; a storage frame fixedly assembled on the top of the base and used for observing and collecting coins; a placement table fixedly assembled on the top of the base through a support plate and used for placing coins; and an ejection mechanism fixedly arranged on the top of the support plate and used for ejecting the coins on the top of the placement table.

[0009] By adopting the above technical solution, it is convenient for operators to test the probability, and the operators do not need to manually eject coins.

[0010] Preferably, the ejection mechanism includes a vertical bar fixedly mounted on the top of the support plate, a plurality of movable rods are slidably inserted into the side of the vertical bar, one end of each movable rod is also fixedly connected to a push plate, and the push plate corresponds to the position of the placement table, the other end of each movable rod is also fixedly connected to an iron pad, an electromagnet is fixedly provided at the top of the support plate relative to the iron pad, and a spring is passed through the middle of the movable rod between the vertical bar and the push plate.

[0011] By adopting the above technical solution, the coins placed on the table can be automatically thrown.

[0012] Preferably, a plurality of rubber washers are fixedly provided on the side surface of the vertical bar relative to the iron washer for contacting the iron washer.

[0013] By adopting the above technical solution, the force of the iron pad colliding with the vertical bar can be buffered.

[0014] Preferably, a plurality of chute slots for placing coins are equidistantly provided on the top of the placing table.

[0015] By adopting the above technical solution, multiple coins can be placed in the slide groove on the placement table in sequence, thereby completing the synchronous testing of multiple coins.

[0016] Preferably, a movable plate is hingedly mounted at the bottom of the base relative to the storage frame for discharging coins in the storage frame.

[0017] By adopting the above technical solution, when collecting coins in the storage box, the operator only needs to open the start plate to complete the removal of coins in the storage box.

[0018] Preferably, an eccentric pad is rotatably connected to the bottom of the base relative to the position of the movable plate to limit the movable plate.

[0019] By adopting the above technical solution, an eccentric pad is provided so that the eccentric pad can shield the moving plate, thereby facilitating the closing operation of the moving plate.

[0020] Preferably, a plurality of partitions are fixedly connected in the storage frame to limit the coins.

[0021] By adopting the above technical solution, each coin can be restricted to avoid collision between coins.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. The electromagnet absorbs the iron pad so that the push plate is away from the placement table. At this time, the springs on each moving rod will shrink and have elastic force. When the circuit of the electromagnet is disconnected, the electromagnet does not absorb the iron pad. At this time, each spring will extend and push the push plate to impact the coins on the placement table, thereby throwing the coins into the storage box. Through this structural design, it is convenient for operators to test the probability, and there is no need for operators to manually eject coins. The coins on the placement table can also be automatically thrown.

[0024] 2. By designing a moving plate, when collecting coins in the storage box, the operator only needs to open the start plate to complete the removal of coins in the storage box. The partition can be set to restrict each coin to avoid collision between coins. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a mathematical probability demonstration device in an embodiment of the present application;

[0026] Figure 2 It is a structural schematic diagram of the other side of a mathematical probability demonstration device in an embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of the bottom structure of a mathematical probability demonstration device in an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. base; 2. storage frame; 3. placement table; 4. support plate; 5. ejection mechanism; 500. vertical bar; 501. moving rod; 502. push plate; 503. iron pad; 504. electromagnet; 505. spring; 6. slide groove; 7. moving plate; 8. eccentric pad; 9. partition. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 3 This application is described in further detail.

[0030] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0031] The present application embodiment discloses a mathematical probability demonstration device. Figures 1 to 3 A mathematical probability demonstration device includes a base 1; a storage frame 2, fixedly assembled on the top of the base 1, for observing and collecting coins; a placement table 3, fixedly assembled on the top of the base 1 through a support plate 4, for placing coins; and an ejection mechanism 5, fixedly arranged on the top of the support plate 4, for ejecting coins on the top of the placement table 3.

[0032] Specifically, the coin is placed on the top of the placement table 3, and then the coin is ejected out of the placement table 3 through the ejection mechanism 5, so that the coin falls into the storage frame 2, and then the tester records the front and back of the coin. Through this structural design, it is convenient for the operator to test the probability, and the operator does not need to manually eject the coin.

[0033] Reference Figure 1 and Figure 2 The ejection mechanism 5 includes a vertical bar 500 fixedly mounted on the top of the support plate 4, and a plurality of movable rods 501 are slidably inserted on the side of the vertical bar 500. One end of each movable rod 501 is fixedly connected to a push plate 502, and the push plate 502 corresponds to the position of the placement table 3. The other end of each movable rod 501 is fixedly connected to an iron pad 503. An electromagnet 504 is fixedly provided at the top of the support plate 4 relative to the position of the iron pad 503. A spring 505 is inserted in the middle of the movable rod 501 between the vertical bar 500 and the push plate 502 (the electrical components used in the device are all powered by an external power supply).

[0034] Specifically, when the ejection mechanism 5 is in use, the electromagnet 504 adsorbs the iron pad 503, so that the push plate 502 is away from the placement table 3. At this time, the springs 505 on each movable rod 501 will shrink and have elastic force. When the circuit of the electromagnet 504 is disconnected, the electromagnet 504 does not adsorb the iron pad 503. At this time, each spring 505 will extend and push the push plate 502 to impact the coin on the placement table 3, thereby throwing the coin into the storage frame 2. Through this structural design, the coin on the placement table 3 can be automatically thrown.

[0035] Reference Figure 2 A plurality of rubber washers are fixedly arranged on the side of the vertical bar 500 relative to the position of the iron pad 503, and are used to contact the iron pad 503. By arranging the rubber washers, the force of the iron pad 503 colliding with the vertical bar 500 can be buffered.

[0036] Reference Figure 1 and Figure 2 A plurality of chutes 6 for placing coins are equidistantly provided on the top of the placing table 3. By providing the chutes 6, a plurality of coins can be placed in the chutes 6 on the placing table 3 in sequence, thereby completing the synchronous testing of a plurality of coins.

[0037] Reference Figure 3 The bottom of the base 1 is hingedly equipped with a movable plate 7 relative to the storage frame 2 for discharging coins in the storage frame 2. By designing the movable plate 7, when collecting coins in the storage frame 2, the operator only needs to open the start plate 7 to complete the removal of coins in the storage frame 2.

[0038] Reference Figure 3 The bottom of the base 1 is rotatably connected with an eccentric pad 8 relative to the position of the moving plate 7, which is used to limit the moving plate 7. By setting the eccentric pad 8, the eccentric pad 8 can block the moving plate 7, thereby facilitating the closing operation of the moving plate 7.

[0039] Reference Figure 1 and Figure 2 A plurality of partitions 9 are fixedly connected in the storage frame 2 to limit each coin. The partitions 9 can limit each coin to avoid collision between coins.

[0040] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0041] The implementation principle of a mathematical probability demonstration device in an embodiment of the present application is: a coin is placed on the top of a placement table 3, and then the coin is ejected from the placement table 3 by an ejection mechanism 5, so that the coin falls into a storage frame 2, and then the tester records the front and back of the coin.

[0042] The ejection mechanism 5 is used by adsorbing the iron pad 503 through the electromagnet 504, so that the push plate 502 is away from the placement table 3. At this time, the springs 505 on each movable rod 501 will shrink and have elastic force. When the circuit of the electromagnet 504 is disconnected, the electromagnet 504 does not adsorb the iron pad 503. At this time, each spring 505 will extend and push the push plate 502 to impact the coin on the placement table 3, thereby throwing the coin into the storage frame 2. Through this structural design, the coin on the placement table 3 can be automatically thrown.

[0043] Moreover, by designing the movable plate 7, when collecting coins in the storage frame 2, the operator only needs to open the start plate 7. By setting the eccentric pad 8, the eccentric pad 8 can cover the movable plate 7, thereby facilitating the closing operation of the movable plate 7.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0045] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0046] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A mathematical probability demonstration device, characterized in that: include: Base (1); A storage frame (2) is fixedly mounted on the top of the base (1) and is used for observing and collecting coins; A placing table (3) is fixedly mounted on the top of the base (1) via a supporting plate (4) and is used for placing coins; An ejection mechanism (5) is fixedly arranged on the top of the support plate (4) and is used to eject coins on the top of the placement platform (3); The ejection mechanism (5) comprises a vertical bar (500) fixedly mounted on the top of the support plate (4), a plurality of movable rods (501) are slidably inserted into the side of the vertical bar (500), one end of each movable rod (501) is fixedly connected to a push plate (502), and the push plate (502) corresponds to the position of the placement table (3), and the other end of each movable rod (501) is fixedly connected to an iron pad (503), an electromagnet (504) is fixedly arranged at the top of the support plate (4) at a position relative to the iron pad (503), and a spring (505) is inserted through the middle of the movable rod (501) between the vertical bar (500) and the push plate (502).

2. A mathematical probability demonstration device according to claim 1, characterized in that: A plurality of rubber washers are fixedly arranged on the side of the vertical strip (500) at a position relative to the iron washer (503) for contacting the iron washer (503).

3. A mathematical probability demonstration device according to claim 1, characterized in that: The top of the placement platform (3) is provided with a plurality of chute grooves (6) for placing coins at equal intervals.

4. A mathematical probability demonstration device according to claim 1, characterized in that: The bottom of the base (1) is hingedly mounted with a movable plate (7) at a position relative to the storage frame (2) and is used to discharge coins in the storage frame (2).

5. A mathematical probability demonstration device according to claim 4, characterized in that: The bottom of the base (1) is rotatably connected with an eccentric pad (8) relative to the position of the moving plate (7), and is used to limit the moving plate (7).

6. A mathematical probability demonstration device according to claim 1, characterized in that: A plurality of partitions (9) are fixedly connected inside the storage frame (2) and are used to limit the coins.

Images