CN111243391A

CN111243391A - Mathematical probability bar statistical chart presentation device

Info

Publication number: CN111243391A
Application number: CN202010172107.XA
Authority: CN
Inventors: 杨元超; 刘雪婷; 张滢; 陈龙倩
Original assignee: Chongqing University of Education
Current assignee: Chongqing University of Education
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-06-05

Abstract

The invention belongs to the field of teaching aids, and particularly relates to a mathematical probability bar statistical chart demonstration device which comprises a box body, wherein a containing groove is formed in the box body, a tooth groove is formed in the upper end of the box body, a magnet block is sucked in the tooth groove, a handle is fixedly connected to the left end of the box body, a box cover is installed at the bottom of the box body, an elastic sheet is fixedly connected to the upper end of the box cover, a clamping block is arranged on the surface of the elastic sheet, and a supporting strip is fixedly connected to the upper end of the magnet block. The magnet block is arranged on the tooth sockets, so that the magnet block can be adjusted according to the requirements, the structure is simple, the applicability is good, the manufacturing cost is low, and the magnet block is suitable for wide popularization.

Description

Mathematical probability bar statistical chart presentation device

Technical Field

The invention relates to the technical field of teaching aids, in particular to a mathematical probability bar statistical chart demonstration device.

Background

The bar statistical chart is that a unit length is used for representing a certain number, straight bars with different lengths are drawn according to the number, and then the straight bars are arranged according to a certain sequence. The number of the various quantities is readily seen in the bar chart. The bar chart is generally called bar chart, also called long bar chart or straight bar chart for short.

In the teaching process, often need adopt presentation device to assist the teaching, for example to the study of mathematics probability bar statistical chart, adopt presentation device can make things convenient for the student to understand more directly perceived. Patent grant publication number "CN 107993528B" proposes a probability mathematics bar statistical chart demonstration device, which uses numerous components, and realizes that "a plurality of bar display components can be inserted into the device to display the bar statistical chart, and the bar display components can be uniformly distributed on the upper end of the main transverse plate, so as to be convenient for students to watch; the length of the bar statistical graph displayed by the bar display component can be changed according to needs; and the device can demonstrate both horizontal and vertical bar graphs ". But the structure is more complicated, leads to manufacturing cost higher, and presentation device is inconvenient to carry moreover, leads to the teacher very inconvenient in the use. Accordingly, there is a need for improvements in the art.

Disclosure of Invention

The invention aims to provide a mathematical probability bar chart demonstration device, which solves the problems of complex structure and high manufacturing cost of the conventional mathematical probability bar chart demonstration device and solves the problem of inconvenience in carrying of the bar chart demonstration device.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a mathematical probability bar statistical chart presentation device, the power distribution box comprises a box body, the groove of accomodating has been seted up to the inside of box, the tooth's socket has been seted up to the upper end of box, the actuation has the magnet piece in the tooth's socket, the left end fixedly connected with handle of box, the case lid is installed to the bottom of box, the upper end fixedly connected with shell fragment of case lid, the surface of shell fragment is provided with the fixture block, the upper end fixedly connected with support bar of magnet piece, the adjusting collar has been cup jointed in the outside slip of support bar, there is the binding nail at the back of adjusting collar through threaded connection, the binding nail is hugged closely with the surface of support bar, it has the inserted block to peg graft in the upper end of box, the upper end fixedly connected with support column of inserted.

Preferably, slots are formed in the upper end of the box body, the number of the slots is two, and the two slots are internally provided with inserting blocks in an inserted mode.

Preferably, the bottom of the box body is provided with two notches. The two notches are symmetrically distributed at the bottom of the box body.

Preferably, the bottom side of the box body is provided with two clamping grooves, clamping blocks are clamped in the two clamping grooves, and the clamping grooves are through grooves.

Preferably, the box cover, the elastic sheet and the clamping block are of an integrated structure and are made of elastic engineering plastics.

Preferably, the support columns and the insertion blocks are of an integrated structure, the number of the support columns is two, and the two support columns are symmetrically distributed at the upper end of the box body.

Preferably, the number of the hanging grooves is multiple, and the hanging grooves are uniformly distributed on the supporting columns.

Preferably, the number of the rubber bands is multiple, and the multiple rubber bands are of closed structures.

Compared with the prior art, the invention has the following beneficial effects:

1. the magnet block is arranged on the tooth sockets, so that the magnet block can be adjusted according to the requirements, the structure is simple, the applicability is good, the manufacturing cost is low, and the magnet block is suitable for wide popularization.

2. According to the invention, the insertion block is arranged on the box body through the slot, so that the support column is convenient to disassemble, the designed rubber band is also convenient to take down, the strip-shaped structure formed by the magnet block, the support bar, the adjusting sleeve and the fastening nail is convenient to take down, the components are taken down and placed in the box body for storage, the carrying is convenient, a teacher can conveniently use the support column during working, and great convenience is provided.

Drawings

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

FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is a cross-sectional view of the adjustment sleeve of FIG. 1 in accordance with the present invention;

FIG. 4 is a side view of the adjustment sleeve of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged view of the portion B of FIG. 4 according to the present invention;

FIG. 6 is a top view of the case of FIG. 1 in accordance with the present invention;

fig. 7 is a left side view of the case of fig. 1 in accordance with the present invention.

In the figure: 1. a box body; 2. a receiving groove; 3. a slot; 4. a notch; 5. a card slot; 6. a tooth socket; 7. a handle; 8. a box cover; 9. a spring plate; 10. a clamping block; 11. a magnet block; 12. a supporting strip; 13. an adjusting sleeve; 14. fastening nails; 15. inserting a block; 16. a support pillar; 17. hanging a groove; 18. a rubber band.

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.

Examples

Referring to fig. 1-7, a mathematical probability bar chart demonstration apparatus comprises a box body 1, a housing groove 2 is formed in the box body 1, a plurality of components can be housed through the design of the housing groove 2, a tooth space 6 is formed in the upper end of the box body 1, a magnet block 11 is sucked in the tooth space 6, a bar structure can be conveniently placed through the matching of the tooth space 6 and the magnet block 11, a handle 7 is fixedly connected to the left end of the box body 1, a box cover 8 is installed at the bottom of the box body 1, an elastic sheet 9 is fixedly connected to the upper end of the box cover 8, a fixture block 10 is arranged on the surface of the elastic sheet 9, a support bar 12 is fixedly connected to the upper end of the magnet block 11, an adjusting sleeve 13 is slidably sleeved on the outer side of the support bar 12, a fastening nail 14 is connected to the back of the adjusting sleeve 13 through a thread, the fastening nail 14 is tightly attached to the surface of the support bar 12, the upper end of the box body 1 is inserted with the insertion block 15, the upper end of the insertion block 15 is fixedly connected with the support column 16, the side face of the support column 16 is provided with a hanging groove 17, a rubber band 18 is hung in the hanging groove 17, and through the design of the rubber band 18, an identification line can be formed, so that the number represented by the position where the adjusting sleeve 13 is located can be observed conveniently.

Referring to fig. 1-2, the upper end of the box body 1 is provided with two slots 3, and the two slots 3 are inserted with the insertion blocks 15. Through the cooperation of slot 3 and inserted block 15, conveniently install support column 16.

Referring to fig. 1-2, the bottom of the box 1 is provided with two notches 4, and the number of the notches 4 is two. The two notches 4 are symmetrically distributed at the bottom of the box body 1. Through the design of breach 4, provide installation space for shell fragment 9.

Referring to fig. 2, the bottom side of the box body 1 is provided with two slots 5, two slots 5 are provided, the two slots 5 are respectively clamped with a clamping block 10, and the slots 5 are through slots. Through the cooperation of draw-in groove 5 and fixture block 10, can carry on spacingly to shell fragment 9 to realize the installation of case lid 8.

Referring to fig. 2, the case cover 8, the resilient plate 9 and the locking block 10 are of an integral structure and are made of elastic engineering plastics. The elastic engineering plastic has certain elasticity, so that the elastic sheet 9 can deform to a certain extent, and the box cover 8 can be opened conveniently.

Referring to fig. 1 and 6, the supporting columns 16 and the inserting blocks 15 are of an integrated structure, the number of the supporting columns 16 is two, and the two supporting columns 16 are symmetrically distributed at the upper end of the box body 1. The rubber band 18 is provided with mounting support by the design of the two support posts 16.

Referring to fig. 1, the number of the hanging grooves 17 is plural, and the plurality of hanging grooves 17 are uniformly distributed on the supporting column 16. By the uniform distribution of the hanging grooves 17, the distance between the hanging grooves 17 can represent a certain numerical value, which is convenient for understanding.

Referring to fig. 1 and 6, the number of the elastic bands 18 is plural, and the plural elastic bands 18 are closed structures. The rubber band 18 is easy to obtain, convenient to use and low in cost, and the relative position of the rubber band and the adjusting sleeve 13 is convenient for observing the quantity represented by the bar graph.

The specific implementation process of the invention is as follows: when a bar graph is required to be represented, the magnet block 11 is firstly placed in the tooth grooves 6 on the box body 1, then the fastening nail 14 is rotated, the fastening nail 14 and the adjusting sleeve 13 generate threaded motion to generate relative displacement, so that the fastening nail 14 and the supporting bar 12 are unlocked relatively, then the adjusting sleeve 13 is moved upwards, the adjusting sleeve 13 is positioned in the rubber band 18 until the required height is adjusted, the use is convenient, the number is represented by designing a bar structure consisting of the magnet block 11, the supporting bar 12, the adjusting sleeve 13 and the fastening nail 14, and the rubber bands 18 are arranged on the supporting columns 16 which are symmetrically distributed for constructing measurement, the number represented by the bar graph is conveniently adjusted, the use is convenient and intuitive, the tooth grooves 6 are designed on the box body 1, the magnet block 11 can be placed on different tooth grooves 6, the adjustment can be conveniently carried out according to the requirements, the structure is simple, the applicability is good, the manufacturing cost is, is suitable for wide popularization;

when the device needs to be carried, firstly, the inserting block 15 at the bottom of the supporting column 16 is pulled out of the slot 3 on the box body 1, the magnet block 11, the supporting strip 12 and other components are taken down, then the finger is inserted into the slot 5 to push the clamping block 10 to enable the clamping block 10 to leave the slot 5, so that the box cover 8 is opened, then the taken-down supporting column 16, the magnet block 11, the supporting strip 12 and other components are put into the accommodating slot 2 in the box body 1, so that the components can be accommodated, then the box cover 8 is closed, only the handle 7 needs to be held by hand when the device is carried, the carrying is convenient, the supporting column 16 can be conveniently detached by designing the slot 3 on the box body 1 to install the inserting block 15, the designed rubber band 18 is also conveniently taken down, the strip-shaped structure formed by the magnet block 11, the supporting strip 12, the adjusting sleeve 13 and the fastening nail 14 is conveniently taken down and placed in the box body 1 to, can be conveniently carried, is convenient for teachers to use during working and provides great convenience.

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. The utility model provides a mathematics probability bar statistics diagram presentation device, includes box (1), its characterized in that: the improved box is characterized in that a containing groove (2) is formed in the box body (1), a tooth groove (6) is formed in the upper end of the box body (1), a magnet block (11) is arranged in the tooth groove (6) in a suction mode, a handle (7) is fixedly connected to the left end of the box body (1), a box cover (8) is installed at the bottom of the box body (1), an elastic piece (9) is fixedly connected to the upper end of the box cover (8), a clamping block (10) is arranged on the surface of the elastic piece (9), a supporting bar (12) is fixedly connected to the upper end of the magnet block (11), an adjusting sleeve (13) is slidably sleeved on the outer side of the supporting bar (12), a fastening nail (14) is connected to the back of the adjusting sleeve (13) through threads, the fastening nail (14) is tightly attached to the surface of the supporting bar (12), an inserting block (15) is inserted into the upper end of, a hanging groove (17) is formed in the side face of the supporting column (16), and a rubber band (18) is hung in the hanging groove (17).

2. The mathematical probability bar chart presentation device of claim 1, wherein: the upper end of the box body (1) is provided with two slots (3), and the two slots (3) are internally provided with inserting blocks (15) in an inserted mode.

3. The mathematical probability bar chart presentation device of claim 1, wherein: the bottom of the box body (1) is provided with two notches (4), and the number of the notches (4) is two. The two notches (4) are symmetrically distributed at the bottom of the box body (1).

4. The mathematical probability bar chart presentation device of claim 1, wherein: draw-in groove (5) have been seted up to the bottom side of box (1), the quantity of draw-in groove (5) is two, two equal joint has fixture block (10) in draw-in groove (5), draw-in groove (5) are for running through the groove.

5. The mathematical probability bar chart presentation device of claim 1, wherein: the box cover (8), the elastic sheet (9) and the clamping block (10) are of an integrated structure and are made of elastic engineering plastics.

6. The mathematical probability bar chart presentation device of claim 1, wherein: support column (16) and inserted block (15) formula structure as an organic whole, the quantity of support column (16) is two, two support column (16) are the symmetric distribution in the upper end of box (1).

7. The mathematical probability bar chart presentation device of claim 1, wherein: the number of the hanging grooves (17) is multiple, and the hanging grooves (17) are uniformly distributed on the supporting columns (16).

8. The mathematical probability bar chart presentation device of claim 1, wherein: the number of the rubber bands (18) is multiple, and the plurality of the rubber bands (18) are of a closed structure.