CN213458610U

CN213458610U - Probability mathematics presentation device

Info

Publication number: CN213458610U
Application number: CN202022646198.4U
Authority: CN
Inventors: 于佳彤
Original assignee: Harbin Huade University
Current assignee: Harbin Huade University
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-15
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a probability mathematics presentation device, including demonstration case and ejection structure, the fluting has been seted up on the wall is surveyed on the right side of demonstration case, and the inside swing joint of fluting has the axostylus axostyle, installs the runner on the axostylus axostyle simultaneously, runner tip and connecting plate fixed connection to connecting plate tip and working plate fixed connection, fixedly connected with baffle on the inner wall roof of demonstration case, baffle bottom and elastic plate fixed connection, and demonstration case left side wall mounting have the slide, and the receiving track is installed to the slide bottom, receives the track bottom simultaneously and installs the dash receiver, lower side and collar fixed connection in the left side of working plate bottom, and install the stay cord on the collar. This probability mathematics presentation device, coin drop in the inside of dash receiver along with receiving the track, can take notes which side of coin up this moment, replace the manual work with the mode that the thumb catapult throws the coin, reduce teacher's work load, simple structure is convenient for realize.

Description

Probability mathematics presentation device

Technical Field

The utility model relates to a mathematics teaching aid equipment science and technology technical field specifically is a probability mathematics presentation device.

Background

As is well known, in the teaching of the probability theory principle, students cannot form intuitive impression on probability due to abstraction of knowledge, teachers usually demonstrate the probability by manually throwing coins, the overall demonstration effect is poor, and meanwhile, hands of teachers feel sore after long-time throwing of coins, so that an ideal teaching effect cannot be achieved.

To this end, we propose a probability mathematics demonstration device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a probability mathematics presentation device to solve the defect that mentions in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a probability mathematics presentation device, includes demonstration case and ejection structure, seted up the fluting on the wall is surveyed on the right side of demonstration case, and the inside swing joint of fluting has the axostylus axostyle, installs the runner on the axostylus axostyle simultaneously, runner tip and connecting plate fixed connection to connecting plate tip and working plate fixed connection, fixedly connected with baffle on the inner wall roof of demonstration case, baffle bottom and elastic plate fixed connection, and demonstration case left side wall mounting have the slide, and the receiving track is installed to the slide bottom, receives the track bottom simultaneously and installs the dash receiver, working plate bottom left side downside and collar fixed connection, and install the stay cord on the collar, the lower extreme of stay cord passes through-hole and limiting plate fixed connection, demonstration bottom of the case and base fixed connection seted up on the demonstration.

Preferably, the end of the working plate is fixedly connected with the rotating wheel through a connecting plate, and the working plate is a rotating structure taking the shaft lever as a circle center.

Preferably, the left upper side of the working plate is provided with a working groove, the working plate is arranged in parallel with the receiving track, and the inclination angle of the receiving track is 30 degrees.

Preferably, the bottom of the working plate is fixedly connected with a working spring, the lower end of the working spring is fixedly connected with a support, the support is arranged at the lower right side inside the demonstration box, and the section of the support is arranged in a 7 shape.

Preferably, the bottom of the working plate is in transmission connection with the limiting plate through a pull rope, the lower end of the limiting plate is fixedly connected with the pull ring, and the pull ring is of a circular structure made of metal materials.

Preferably, the slide setting is in the upper left side of working plate, and the slide is the slope setting, and the contained angle between slide and the wallboard of demonstration case is 105 simultaneously.

Preferably, the ejection structure is composed of a working plate, a rotating wheel and a working spring, and the widths of the working plate, the sliding rail and the receiving rail are consistent.

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

1. the work groove bounces the coins, then the coins fall on the receiving track which is obliquely arranged along with the work groove and fall inside the receiving plate along with the receiving track, and at the moment, the face of each coin can be recorded to be upward, so that a manual mode of catapulting and throwing the coins by thumb is replaced, the workload of teachers is reduced, the structure is simple, and the realization is convenient;

2. when elastic plate and working plate contact, the elastic plate texture is soft, can not cause the damage to the working plate, and this device novel structure throws the coin through the mode of hand power pull ring, replaces artifical mode of throwing the coin with the thumb ejection, reduces teacher's work load, and the device structure is interesting strong, can improve student's enthusiasm of study.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a top view of the structural work plate and the slide rail of the present invention;

FIG. 3 is a top view of the structural work plate and receiving track of the present invention;

FIG. 4 is a schematic view of the working plate of the present invention;

fig. 5 is the ejection schematic diagram of the structure working plate of the present invention.

Reference numbers in the figures: 1. a demonstration box; 2. grooving; 3. a rotating wheel; 4. a shaft lever; 5. a connecting plate; 6. a working plate; 7. a working spring; 8. a support; 9. a base; 10. a pull ring; 11. a limiting plate; 12. pulling a rope; 13. receiving a plate; 14. receiving a track; 15. a mounting ring; 16. a slideway; 17. a working groove; 18. a baffle plate; 19. an elastic plate; 20. and (4) an ejection structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a probability mathematics demonstration device, which comprises a demonstration box 1 and an ejection structure 20, wherein the right side wall of the demonstration box 1 is provided with a slot 2, and the inside of the open slot 2 is movably connected with a shaft lever 4, meanwhile, the shaft lever 4 is provided with a rotating wheel 3, the end part of the rotating wheel 3 is fixedly connected with a connecting plate 5, the end part of the connecting plate 5 is fixedly connected with the working plate 6, the top plate of the inner wall of the demonstration box 1 is fixedly connected with a baffle 18, the bottom of the baffle 18 is fixedly connected with an elastic plate 19, and a slideway 16 is arranged on the left side wall of the demonstration box 1, a receiving track 14 is arranged at the bottom of the slideway 16, meanwhile, the bottom of the receiving track 14 is provided with a receiving plate 13, the left lower side of the bottom of the working plate 6 is fixedly connected with a mounting ring 15, the mounting ring 15 is provided with a pull rope 12, meanwhile, the lower end of the pull rope 12 penetrates through a through hole formed in a bottom plate of the demonstration box 1 to be fixedly connected with the limiting plate 11, and the bottom of the demonstration box 1 is fixedly connected with the base 9; the bottom of the working plate 6 is fixedly connected with a working spring 7, the lower end of the working spring 7 is fixedly connected with a support 8, the support 8 is arranged at the lower right side inside the demonstration box 1, and the section of the support 8 is arranged in a 7 shape; the end part of the working plate 6 is fixedly connected with the rotating wheel 3 through a connecting plate 5, and the working plate 6 is a rotating structure taking the shaft lever 4 as the center of a circle; the left upper side of the working plate 6 is provided with a working groove 17, the working plate 6 is arranged in parallel with the receiving track 14, and the inclination angle of the receiving track 14 is 30 degrees; the bottom of the working plate 6 is in transmission connection with a limiting plate 11 through a pull rope 12, the lower end of the limiting plate 11 is fixedly connected with a pull ring 10, and the pull ring 10 is of a circular structure made of metal materials; the slideway 16 is arranged at the left upper side of the working plate 6, the slideway 16 is arranged obliquely, and an included angle between the slideway 16 and a wall plate of the demonstration box 1 is 105 degrees; the ejection structure 20 is composed of three parts, namely the working plate 6, the rotating wheel 3 and the working spring 7, and the widths of the working plate 6, the slide way 16 and the receiving track 14 are consistent.

As shown in fig. 1 and fig. 4-5: the coin is thrown to aloft under the ejection of working plate 6, is installed baffle 18 on the demonstration case 1 inner wall, and the setting of baffle 18 can avoid the coin to remove to the upper right side of working plate 6, and when the coin dropped on working plate 6, because working plate 6 set up for the slope, consequently, the coin can not stop on working plate 6, and the coin can be along with the working plate 6 landing that the slope set up to the receiving track 14 that the slope set up to accomodate to the receiving board 13 inside.

As shown in fig. 1: the bottom fixed connection elastic plate 19 of baffle 18, elastic plate 19 is preferred to be the rubber material, and when elastic plate 19 and the contact of working

plate

6, 19 textures of elastic plate are soft, can not cause the damage to working plate 6, and this device novel structure through the mode of hand power pull ring 10, throws the coin, replaces the artifical mode of throwing the coin with the thumb ejection, reduces teacher's work load, and the device structure is interesting strong, can improve student's study's enthusiasm.

The working principle is as follows: when the probability mathematics demonstration device is used, the pull ring 10 is held by hand and pulled downwards, the working plate 6 presses the working spring 7 at the moment, the working plate 6 at the moment is in a force accumulation state, coins are thrown into the inside of the slide rail 16 at the moment, the coins slide into the inside of the working groove 17 through the slide rail 16, the pull ring 10 is loosened at the moment, the working spring 7 resets, the working groove 17 bounces the coins, then the coins fall on the inclined receiving rail 14 along with the working groove 17, the coins fall inside the receiving plate 13 along with the receiving rail 14, the face of the coins can be recorded upwards at the moment, the mode that the coins are ejected and thrown by thumb manually is replaced, the workload of teachers is reduced, the structure is simple, the realization is convenient, and the whole process of the probability mathematics demonstration device is worked.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A probabilistic mathematical demonstration device comprising a demonstration box (1) and an ejection structure (20), characterized in that: the demonstration box is characterized in that a groove (2) is formed in the right side wall of the demonstration box (1), a shaft lever (4) is movably connected inside the groove (2), a rotating wheel (3) is installed on the shaft lever (4), the end part of the rotating wheel (3) is fixedly connected with a connecting plate (5), the end part of the connecting plate (5) is fixedly connected with a working plate (6), a baffle (18) is fixedly connected onto the inner wall top plate of the demonstration box (1), the bottom of the baffle (18) is fixedly connected with an elastic plate (19), a slide way (16) is installed on the left side wall of the demonstration box (1), a receiving track (14) is installed at the bottom of the slide way (16), a receiving plate (13) is installed at the bottom of the receiving track (14), the left lower side of the bottom of the working plate (6) is fixedly connected with a mounting ring (15), a pull rope (12) is installed on the mounting ring (15), and the lower end of the pull rope (12) penetrates, the bottom of the demonstration box (1) is fixedly connected with the base (9).

2. A probabilistic mathematical presentation device as claimed in claim 1, wherein: the end part of the working plate (6) is fixedly connected with the rotating wheel (3) through a connecting plate (5), and the working plate (6) is of a rotating structure taking the shaft lever (4) as the center of a circle.

3. A probabilistic mathematical presentation device as claimed in claim 1, wherein: work groove (17) have been seted up to the upper left side of working plate (6), and working plate (6) and receiving track (14) parallel arrangement, and the inclination of receiving track (14) simultaneously is 30.

4. A probabilistic mathematical presentation device as claimed in claim 1, wherein: the bottom of the working plate (6) is fixedly connected with a working spring (7), the lower end of the working spring (7) is fixedly connected with a support (8), the support (8) is installed on the lower right side inside the demonstration box (1), and the section of the support (8) is arranged in a 7 shape.

5. A probabilistic mathematical presentation device as claimed in claim 1, wherein: the bottom of the working plate (6) is in transmission connection with the limiting plate (11) through the pull rope (12), the lower end of the limiting plate (11) is fixedly connected with the pull ring (10), and the pull ring (10) is of a circular structure made of metal materials.

6. A probabilistic mathematical presentation device as claimed in claim 1, wherein: slide (16) set up the upper left side at work board (6), and slide (16) are the slope setting, and the contained angle between the wallboard of slide (16) and demonstration case (1) is 105 simultaneously.

7. A probabilistic mathematical presentation device as claimed in claim 1, wherein: the ejection structure (20) is composed of a working plate (6), a rotating wheel (3) and a working spring (7), and the widths of the working plate (6), the slide rail (16) and the receiving track (14) are consistent.