CN215577048U

CN215577048U - College mathematics probability distribution demonstrates teaching aid

Info

Publication number: CN215577048U
Application number: CN202121572510.8U
Authority: CN
Inventors: 王辉宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-01-18
Anticipated expiration: 2031-07-12

Abstract

The utility model discloses a university mathematics probability distribution demonstration teaching aid in the technical field of teaching aids, which comprises a fixed box, the front end surface of the fixed box is provided with a first groove, a display main body is arranged in the first groove, a plurality of heat dissipation holes are arranged on the left side wall and the right side wall of the fixed box, a supporting seat is fixedly connected at the bottom end of the fixed box, the bottom end of the supporting seat is fixedly connected with a fixed seat, the top end surface of the fixed seat is provided with a second groove, the front end of the first groove is movably provided with two writing boards which have the same size and are symmetrical with each other, the writing boards are connected with a moving mechanism positioned in the second groove, the bottom end of the fixed seat is fixedly connected with two symmetrical upright posts, and the bottom ends of the upright posts are provided with bottom feet, the utility model has simple and convenient operation, the display device can avoid dust accumulation on the display body, and key points in the demonstration content can be shown through the writing board.

Description

College mathematics probability distribution demonstrates teaching aid

Technical Field

The utility model relates to the technical field of teaching aids, in particular to a college mathematics probability distribution demonstration teaching aid.

Background

The teaching aid refers to a model, a real object, a specimen, an instrument, a chart, a slide show and the like for explaining something, and comprises teaching equipment, a teaching instrument, practical training equipment, education equipment, experimental equipment, a teaching specimen, a teaching model and the like, in the study of university mathematics probability distribution, a teacher needs to demonstrate through a teaching aid, most of common demonstration teaching aids demonstrate study contents through a display, however, the existing display does not have the dustproof function, when the display is exposed to the outside air for a long time, the dust accumulation is easy to generate on the display, and the demonstration key content can be displayed without other auxiliary tools in the demonstration process, thereby greatly reducing the practical performance of the display, in order to avoid dust deposition on a display and improve the practical performance of the display, a college mathematics probability distribution demonstration teaching aid is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a university mathematics probability distribution demonstration teaching aid to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a university's mathematics probability distribution demonstrates teaching aid, includes fixed case, first recess has been seted up on the front end surface of fixed case, the installation is equipped with the display main part in the first recess, all be equipped with a plurality of louvres on the left and right sides wall of fixed case, the bottom fixedly connected with supporting seat of fixed case, supporting seat bottom fixedly connected with fixing base, just the supporting seat is located the top middle-end of fixing base, the second recess has been seted up on the top surface of fixing base, the second recess is located the supporting seat front end, the front end activity of first recess is equipped with two clipboards that the size is the same and mutual symmetry, the connection is equipped with the moving mechanism who is located the second recess on the clipboard, two symmetrical pole settings of bottom fixedly connected with of fixing base, the bottom installation of pole setting is equipped with the footing.

Further, moving mechanism includes two mutual opposition and fixed connection's horizontal screw rod, the movable plate has been cup jointed to horizontal screw rod's outside screw thread, set up on the movable plate with horizontal screw rod assorted screw hole, the top of second recess is passed on the top of movable plate and is connected with the writing board, two both ends difference fixedly connected with movable rod one and movable rod two about horizontal screw rod, the left end of movable rod one rotates and runs through the second recess and connect the activity handle, the right-hand member of movable rod two rotates through connection on the inner wall of second recess.

Furthermore, two sliding grooves are formed in the surface of the front end of the fixing box, the two sliding grooves are respectively located at the upper end and the lower end of the first groove, and a sliding piece matched with the sliding grooves is arranged on the rear wall of the writing board.

Furthermore, a fixing plate is arranged at the front end of the bottom of one side, far away from the two writing boards, of each fixing plate, a third groove is formed in each fixing plate, each third groove is a circular groove, and a pen container is arranged in each third groove.

Further, the outer side surface of the bottom of the pen container is provided with an external thread, and the inner wall of the third groove is provided with an internal thread matched with the external thread.

Furthermore, a plurality of anti-slip strips are embedded on the surface of the bottom end of the bottom foot, and the number of the anti-slip strips is three and is evenly distributed in the transverse direction.

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

1. through the arrangement of the fixed box, the first groove, the display main body, the supporting seat, the second groove, the writing board and the moving mechanism, the movable rod I, the movable rod II and the two transverse screws can be driven to simultaneously rotate in the forward direction by rotating the movable handle in the forward direction, the movable plate is connected with the transverse screws through threads, the two transverse screws are opposite to each other, the two movable plates can be driven to relatively move through the simultaneous rotation of the two transverse screws, so that the two writing boards are driven to relatively move until the two writing boards jointly close the first groove, wherein the writing boards can conveniently slide on the fixed box through the sliding connection between the sliding part of the rear wall of the writing board and the sliding groove, the stability of the writing boards during moving is favorably improved, and the dust can be prevented from entering the first groove and causing dust deposition influence on the display main body through the combination of the two writing boards, the movable handle is rotated reversely, so that the two writing boards can be far away from each other, and the display main body is displayed.

2. Through setting up fixed plate, third recess, pen container, external screw thread and internal thread, be convenient for pen container threaded connection on the fixed plate through external screw thread and internal screw thread threaded connection, can place the pen through setting up the pen container, the teacher can use the pen of writing in the pen container to write key content on the clipboard, and the teacher of being convenient for uses, is favorable to improving the practicality of this device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the fixing box, the supporting seat and the fixing seat of the present invention;

FIG. 3 is a partial schematic structural view of the left side of the present invention;

FIG. 4 is a schematic structural view between the fixing plate and the pen barrel according to the present invention;

in the figure: 1. a fixed box; 2. a first groove; 3. a display main body; 4. a supporting seat; 5. a fixed seat; 6. a second groove; 7. a writing board; 8. a moving mechanism; 81. a transverse screw; 82. moving the plate; 83. a first movable rod; 84. a second movable rod; 85. a movable handle; 9. erecting a rod; 10. footing; 11. a chute; 12. a fixing plate; 13. a third groove; 14. a pen container; 15. an external thread; 16. an internal thread; 17. and (4) an anti-slip strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, a university mathematics probability distribution demonstration teaching aid comprises a fixed box 1, a first groove 2 is arranged on the front end surface of the fixed box 1, a display main body 3 is arranged in the first groove 2, a power line is electrically connected with the rear end wall of the display main body 3, a cable hole matched with the power line is arranged on the rear end wall of the fixed box 1, a plurality of radiating holes are arranged on the left side wall and the right side wall of the fixed box 1, through the radiating holes, the display main body 3 is convenient to radiate and ventilate when being closed after being used, a dust screen matched with the radiating holes can be correspondingly arranged in the radiating holes to prevent dust from entering, a supporting seat 4 is fixedly connected with the bottom end of the fixed box 1, a fixed seat 5 is fixedly connected with the bottom end of the supporting seat 4, the supporting seat 4 is positioned at the middle top of the fixed seat 5, the length of the supporting seat 4 is half of the length of the fixed seat 5, second recess 6 has been seted up on the top surface of fixing base 5, and second recess 6 is located 4 front ends of supporting seat, and the front end activity of first recess 2 is equipped with two writing boards 7 that the size is the same and mutual symmetry, connects on writing board 7 to be equipped with the moving mechanism 8 that is located second recess 6 and constructs, and the bottom fixedly connected with of fixing base 5 has two symmetrical pole settings 9, and the bottom installation of pole setting 9 is equipped with footing 10.

Referring to fig. 1, the moving mechanism 8 includes two opposite and fixedly connected transverse screws 81, a moving plate 82 is sleeved on the outer side of the transverse screws 81 through threads, threaded holes matched with the transverse screws 81 are formed in the moving plate 82, the top end of the moving plate 82 passes through the top end of the second groove 6 and is connected with the writing board 7, the width of the moving plate 82 is smaller than the width of the second groove 6, that is, the moving plate 82 does not contact with the inner wall of the second groove 6, so as to avoid friction resistance between the moving plate and the second groove, the moving plate 82 can sufficiently support the weight of the writing board 7, a first moving rod 83 and a second moving rod 84 are respectively and fixedly connected to the left end and the right end of the two transverse screws 81, the left end of the first moving rod 83 is rotatably penetrated through the second groove 6 and is connected with a movable handle 85, the movable handle 85 is in a circular ring shape, so that a teacher can conveniently pass fingers through the circular ring and firmly hold the movable handle 85, the right end of the second movable rod 84 is rotatably connected to the inner wall of the second groove 6 in a penetrating manner.

Referring to fig. 1-2, the front end surface of the fixing box 1 is provided with two sliding grooves 11, the two sliding grooves 11 are respectively located at the upper end and the lower end of the first groove 2, the rear wall of the writing board 7 is provided with a sliding part matched with the sliding grooves 11, the sliding part can be a sliding block, and the sliding connection between the sliding part and the sliding grooves 11 facilitates the movement of the writing board 7 at the front end of the fixing box 1, thereby facilitating the improvement of the stability of the writing board 7 during the movement and improving the connectivity between the writing board 7 and the fixing box 1.

Referring to fig. 1-3, a fixing plate 12 is installed at the front end of the bottom of the far side of each of the two writing boards 7, a third groove 13 is formed in the fixing plate 12, the third groove 13 is a circular groove, a pen container 14 is arranged in the third groove 13, the pen container 14 is arranged to facilitate placement of writing pens, the pen container 14 and the fixing plate 12 can be made of plastic, the writing pens are erasable water-based pens, and the writing boards 7 are plastic white boards.

Referring to fig. 4, the outer side surface of the bottom of the pen container 14 is provided with an external thread 15, the inner wall of the third groove 13 is provided with an internal thread 16 matched with the external thread 15, and the pen container 14 and the fixing plate 12 are conveniently detached and installed through the threaded connection between the external thread 15 and the internal thread 16.

Example 2

Increased antislip strip 17 on embodiment 1's basis, please refer to fig. 1, the bottom surface of footing 10 inlays and is equipped with a plurality of antislip strips 17, and the quantity of antislip strip 17 is three and evenly is transverse distribution, and through setting up antislip strip 17, antislip strip 17 is the rubber material, is favorable to improving the non-skid property of footing 10 to improve the steadiness of this device.

The working principle is as follows: when the demonstration pen container is used, the movable handle 85 is rotated reversely, so that the first movable rod 83, the second movable rod 84 and the two transverse screws 81 can be driven to rotate reversely at the same time, due to the threaded connection of the movable plate 82 and the transverse screws 81 and the mutual opposition of the two transverse screws 81, when the two transverse screws 81 rotate simultaneously, the two movable plates 82 can be driven to be away from each other, so that the two writing boards 7 are driven to be away from each other until the two writing boards 7 open the first grooves 2 completely, wherein the sliding connection between the sliding part on the rear wall of the writing board 7 and the sliding groove 11 is used for facilitating the sliding of the writing board 7 on the fixed box 1, so that the stability of the writing boards 7 during moving is improved, the display main body 3 is electrically connected with an external power supply, so that the display main body 3 can be used for the probability teaching of college mathematics, and in the teaching process, a teacher can use the writing pen in the pen container 14 to write key contents on the writing boards 7, through the threaded connection of external screw thread 15 and internal thread 16, can dismantle the installation between pen container 14 and the fixed plate 12, be favorable to improving the practicality of this device, after the teaching, with movable handle 85 forward rotation, can move movable rod one 83, movable rod two 84 and two horizontal screw rods 81 carry out forward rotation simultaneously, thereby drive two movable plate 82 relative movement, thereby drive two clipboard 7 relative movement, close first recess 2 jointly until two clipboards 7, be in the same place through two clipboards 7, can avoid the dust to get into in the first recess 2 and cause the deposition influence to display main part 3.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a university's mathematics probability distribution demonstrates teaching aid, includes fixed case (1), its characterized in that: the front end surface of the fixed box (1) is provided with a first groove (2), a display main body (3) is arranged in the first groove (2), the left side wall and the right side wall of the fixed box (1) are respectively provided with a plurality of heat dissipation holes, the bottom end of the fixed box (1) is fixedly connected with a supporting seat (4), the bottom end of the supporting seat (4) is fixedly connected with a fixed seat (5), the supporting seat (4) is positioned at the middle end of the top of the fixed seat (5), the top end surface of the fixed seat (5) is provided with a second groove (6), the second groove (6) is positioned at the front end of the supporting seat (4), the front end of the first groove (2) is movably provided with two writing boards (7) which have the same size and are symmetrical to each other, the writing boards (7) are connected with a moving mechanism (8) positioned in the second groove (6), the bottom end of the fixed seat (5) is fixedly connected with two symmetrical vertical rods (9), bottom feet (10) are arranged at the bottom ends of the vertical rods (9).

2. A university mathematics probability distribution demonstration teaching aid according to claim 1, characterized in that: moving mechanism (8) include two mutual opposition and fixed connection's horizontal screw rod (81), movable plate (82) have been cup jointed to the outside screw thread of horizontal screw rod (81), set up on movable plate (82) with horizontal screw rod (81) assorted screw hole, the top of second recess (6) is passed on the top of movable plate (82) and is connected with clipboard (7), two both ends difference fixedly connected with movable rod (83) and movable rod two (84) about horizontal screw rod (81), the left end of movable rod one (83) is rotated and is run through second recess (6) and connect activity handle (85), the right-hand member of movable rod two (84) is rotated through connection on the inner wall of second recess (6).

3. A university mathematics probability distribution demonstration teaching aid according to claim 1, characterized in that: two sliding grooves (11) are formed in the surface of the front end of the fixing box (1), the two sliding grooves (11) are respectively located at the upper end and the lower end of the first groove (2), and sliding parts matched with the sliding grooves (11) are arranged on the rear wall of the writing board (7).

4. A university mathematics probability distribution demonstration teaching aid according to claim 1, characterized in that: two one side bottom front end that clipboard (7) kept away from mutually all installs and is equipped with fixed plate (12), third recess (13) have been seted up in fixed plate (12), third recess (13) are circular groove, be equipped with pen container (14) in third recess (13).

5. A university mathematics probability distribution demonstration teaching aid according to claim 4, characterized in that: the outer side surface of the bottom of the pen container (14) is provided with an external thread (15), and the inner wall of the third groove (13) is provided with an internal thread (16) matched with the external thread (15).

6. A university mathematics probability distribution demonstration teaching aid according to claim 1, characterized in that: the bottom surface of footing (10) inlays and is equipped with a plurality of antislip strips (17), the quantity of antislip strip (17) is three and evenly is transverse distribution.