CN113920823A

CN113920823A - Business administration teaching aid is equipped with teaching aid that file storage effect is easily switched

Info

Publication number: CN113920823A
Application number: CN202111260118.4A
Authority: CN
Inventors: 姚洁
Original assignee: Jiangsu Institute of Economic and Trade Technology
Current assignee: Jiangsu Institute of Economic and Trade Technology
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-01-11
Anticipated expiration: 2041-10-28
Also published as: CN113920823B

Abstract

The invention discloses a teaching aid with a file storage effect and easy switching for business management teaching, comprising a protective shell, which is the main protection object of the teaching aid as a whole, and a roller is fixedly arranged at the bottom of the protective shell; The top surface of the casing and the bottom surface of the handwheel are fixedly provided with a disc block; the writing board runs through the outer surface of the protective shell, and the writing board is fixedly arranged on the outer surface of the fixing block. The teaching aid for business management teaching has the effect of file storage and is easy to switch. By rotating the hand wheel once, the disc block drives the connecting block with the opening slot to rotate one fifth of a circle through the convex column, so that the connecting block can pass through the cylindrical block. The effect of switching the writing board on the fixed block, at the same time, the fixed block will drive the disk column block on the support column to rotate one-fifth of a circle, which is convenient for taking the documents stored in the internal pull-out cabinet, so as to achieve a document storage system. Easy to switch effect.

Description

Business administration teaching aid is equipped with teaching aid that file storage effect is easily switched

Technical Field

The invention relates to the technical field related to industrial and commercial management, in particular to an industrial and commercial management teaching tool which is provided with a teaching aid with a file storage effect easy to switch.

Background

The business administration is a very common management specialty in financial industry, mainly manages the business enterprise of economic market, needs study business enterprise management's basic theory, professional knowledge and basic skill etc. to reach and have corresponding good management skill, and the education process of business administration needs to use a teaching aid, imparts knowledge to students through the teaching aid, but this teaching aid has some shortcomings:

firstly, because the teaching field of industrial and commercial management is more, different teaching material files and the like are needed when the same teaching aid is used, but the common blackboard teaching aid does not have the effect of storing the files, so that the teaching aid is troublesome;

secondly, as mentioned in the first embodiment, even if files in different teaching fields are stored at the same time, the files are not convenient to switch and are easy to be confused, so that the teaching time is influenced, and certain disadvantages are caused;

thirdly, in the process of different teaching fields, the teaching theme can not be directly displayed, which is very troublesome and is easy to be understood by the students;

fourthly, when the blackboard is used every time, the chalk is needed to be used, but the chalk does not have the functions of self storage and self discharge when needing to be switched every time, so that the blackboard is convenient for a user to use, and is inconvenient.

To the above problems, innovative design is urgently needed on the basis of the original teaching aid.

Disclosure of Invention

The invention aims to provide a teaching aid with an easily-switched file storage effect for industrial and commercial management teaching, which is used for solving the problem that files are not stored in the prior art; inconvenient switching is troublesome; the function of directly displaying the teaching theme is not available; the chalk has no function of self chalk discharging.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a business administration teaching aid is equipped with the teaching aid that the effect was easily switched is stored to file, includes:

the protective shell is a main protective object of the whole teaching aid, and rollers are fixedly arranged at the bottom of the protective shell;

the hand wheel penetrates through the top surface of the protective shell, and a disc block is fixedly arranged on the bottom surface of the hand wheel;

the writing board penetrates through the outer surface of the protective shell, the writing board is fixedly arranged on the outer surface of the fixing block, and the fixing block is located inside the protective shell;

the disc column block penetrates through the outer surface of the bottom end of the protective shell, the outer surface of the disc column block is penetrated through by the drawing cabinet, the disc column block is located inside the protective shell, and the drawing cabinet is distributed in an equal angle mode relative to the central axis point of the disc column block.

As a preferred technical scheme of the present invention, a convex column is fixedly disposed on a bottom surface of the disc block, the convex column penetrates through an open slot, the open slot is disposed on an outer surface of the connection block, the open slot and the convex column are in clamping connection, the open slot is equiangularly distributed with respect to a central axis point of the connection block, a cylindrical block is fixedly disposed inside the connection block, and the cylindrical block and the protective shell form a rotation structure.

Adopt above-mentioned technical scheme, the disc piece is at rotatory in-process, and the disc piece can drive the rotatory week of projection, lets the projection card go into the open slot in, promotes the connecting block through the open slot and rotates to make the connecting block drive the cylinder piece rotatory, thereby reach the disc piece when rotatory week, the connecting block can drive the rotatory one fifth of cylinder piece a week.

As a preferred technical scheme of the invention, the bottom surface of the cylindrical block is fixedly provided with a fixed block, the outer surface of the fixed block is fixedly provided with a writing board, the writing board is distributed in an equal angle mode relative to the central axis point of the fixed block, the bottom surface of the fixed block is fixedly connected with a supporting column, and the outer surface of the supporting column is fixedly provided with a disc column block.

Adopt above-mentioned technical scheme, when the cylinder piece was rotatory fifth week, the cylinder piece can drive overlook and personally submit polygonal fixed block and rotate fifth week to make the board on the fixed block obtain switching, reach the function of easy switching, the fixed block can drive the support column rotation simultaneously, let the support column can drive the disc column piece and rotate, thereby can let the pull cabinet on the disc column piece obtain switching, be convenient for take the file in different fields.

According to the preferable technical scheme, the outer surface of the bottom end of the supporting column is connected with a crawler belt, the inner surface of the tail end of the crawler belt is connected with a connecting column, the outer surfaces of the connecting column and the supporting column are attached to the crawler belt, the connecting column and the supporting column and the protective shell form a rotating structure, the outer surface of the top end of the connecting column is fixedly provided with a display board, the display board penetrates through the outer surface of the protective shell, the display board is distributed in an equal angle mode relative to the central axis point of the connecting column, and the display board, the writing board, the pull cabinet and the open slot are distributed in the same number in the equal angle mode.

Adopt above-mentioned technical scheme, when the support column was rotatory, the support column can drive the track function of tight laminating for the end of track can drive the spliced pole of tight laminating rotatory, the spliced pole then can drive the show board rotatory this moment, and because the quantity of angular distribution such as show board, pull cabinet and open slot is the same, so when reaching the rotatory normal position of board at every turn, pull cabinet and show board are also normal position, and the main part that the show board demonstrates all corresponds with the file that the pull cabinet was stored.

As a preferred technical scheme of the present invention, the outer surface of the hand wheel is penetrated by a top block, the top block is trapezoidal in plan view, the end of the top block is fixedly connected with a compression spring, the end of the compression spring is fixedly arranged inside the hand wheel, the top block is in clamping connection with the protective shell, the top block and the hand wheel form an elastic structure through the compression spring, the hand wheel and the protective shell form a rotating structure, and the hand wheel and the top block form a sliding structure.

Adopt above-mentioned technical scheme, when the hand wheel was rotatory, the hand wheel can drive the kicking block rotatory, and the kicking block overlooks and personally submits trapezoidal form, and when the kicking block received the extrusion, the kicking block then can retract to the inside of hand wheel to produce compression force to compression spring and fill the ability, no longer receive the extrusion force until the kicking block.

As a preferred technical scheme of the invention, a fixed spring is fixedly arranged inside the protective shell, a supporting rod is fixedly connected to the top end of the fixed spring, the supporting rod and the protective shell form an elastic structure through the fixed spring, the elastic acting force of the fixed spring is smaller than that of a compression spring, the protective shell and the supporting rod form a sliding structure, a twist rod is fixedly connected to the tail end of the supporting rod, the twist rod penetrates through the outer surface of the roller, the roller is installed inside the protective shell, and the protective shell and the roller form a rotating structure.

Adopt above-mentioned technical scheme, and when the kicking block was rotatory to align with the bracing piece, the compression spring who fills the ability can promote the kicking block, lets the kicking block promote the bracing piece under the fixed spring effect, because fixed spring's elastic force is less than compression spring's elastic force, so the bracing piece can be promoted easily, and fixed spring is compressed simultaneously and is filled the ability, and the bracing piece then can promote the fried dough twist pole this moment and slide.

According to the preferable technical scheme, the roller is fixedly provided with a convex block on the inner surface, the convex block is connected with the twist rod in a clamping mode, the top surface of the roller is provided with a groove, the groove is located below a storage box, the storage box is fixedly arranged on the top surface of a protective shell, chalk is placed inside the storage box, the roller is located above the top end of a sliding groove, the tail end of the sliding groove is arranged on the outer surface of the protective shell, a taking box is fixedly arranged on the outer surface of the protective shell, and the taking box is located at the tail end of the sliding groove.

Adopt above-mentioned technical scheme, when the fluted twist rod slides, the fluted twist rod can extrude the lug, when the lug receives spiral helicine fluted twist rod extrusion, the lug can drive fixed connection's cylinder rotatory, it is rotatory to make the cylinder can drive the recess, let the inside chalk of placing that the box will be stored to the recess introduce the recess through gravity, and rotatory recess then can be poured the chalk into the spout, slide into through the spout and take the box and be convenient for take, and otherwise, when the fluted twist rod slides in the opposite direction and resets, the cylinder then rotates once more and resets, make the recess load the chalk once more.

Compared with the prior art, the invention has the beneficial effects that: the industrial and commercial management teaching tool is provided with a teaching tool with easily switched file storage effects;

1. the disc block can drive the connecting block with the open slot to rotate for one fifth of a circle through the convex column by rotating the hand wheel for one circle, so that the effect that the connecting block switches the writing board on the fixed block through the cylindrical block is achieved, meanwhile, the fixed block can drive the disc column block on the supporting column to rotate for one fifth of a circle, the files stored in the internal drawing cabinet can be conveniently taken, and the effects of file storage and easy switching are achieved;

2. meanwhile, when the supporting columns rotate for one fifth of a week, the supporting columns can also operate through the tightly attached crawler, so that the crawler can drive the connecting columns to rotate, the connecting columns drive the display board to rotate, the theme can be conveniently displayed through the display board, and students can be told what content theme to teach today;

3. and when the bracing piece was promoted, the bracing piece then can promote the fluted bar, lets the fluted bar can extrude the lug for the lug drives fixed connection's cylinder rotatory, thereby the cylinder then can load the chalk through the recess and pour the spout into, and the landing is conveniently taken to the pull cabinet, reaches the function that can just the brand-new chalk of roll-off when switching the board at every turn, conveniently imparts knowledge to students and writes.

Drawings

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

FIG. 2 is a schematic overall front cross-sectional structural view of the present invention;

FIG. 3 is a schematic top sectional view of the present invention;

FIG. 4 is a schematic bottom sectional view of the present invention;

FIG. 5 is a schematic view of a sectional view of the connection between the disc column block and the drawer cabinet;

FIG. 6 is a schematic view of a sectional view of the twist bar and the drum;

FIG. 7 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 8 is a sectional side view of the drum and the groove of the present invention;

FIG. 9 is a schematic view of a cross-sectional view of the connection between the display board and the connecting column according to the present invention.

In the figure: 1. a protective shell; 2. a roller; 3. a hand wheel; 4. a disc block; 5. a convex column; 6. an open slot; 7. connecting blocks; 8. a cylindrical block; 9. a fixed block; 10. a writing board; 11. a support pillar; 12. a disc column block; 13. a crawler belt; 14. connecting columns; 15. a display board; 16. a top block; 17. a compression spring; 18. a support bar; 19. fixing the spring; 20. a twisted rod; 21. a drum; 22. a bump; 23. a groove; 24. a storage box; 25. chalk; 26. a chute; 27. taking the box; 28. a pull cabinet.

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.

Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a business administration teaching aid is equipped with teaching aid that has file storage effect and easily switches, including protecting crust 1, gyro wheel 2, hand wheel 3, disc piece 4, projection 5, open slot 6, connecting block 7, cylinder piece 8, fixed block 9, board 10, support column 11, disc post piece 12, track 13, spliced pole 14, show board 15, kicking block 16, compression spring 17, bracing piece 18, fixing spring 19, fluted twist rod 20, cylinder 21, lug 22, recess 23, storage box 24, chalk 25, spout 26, the box 27 of taking, pull cabinet 28

The protective shell 1 is a main protective object of the whole teaching aid, and the bottom of the protective shell 1 is fixedly provided with a roller 2;

the hand wheel 3 penetrates through the top surface of the protective shell 1, and a disc block 4 is fixedly arranged on the bottom surface of the hand wheel 3;

the writing board 10 penetrates through the outer surface of the protective shell 1, the writing board 10 is fixedly arranged on the outer surface of the fixing block 9, and the fixing block 9 is located inside the protective shell 1;

the disc column block 12 penetrates through the outer surface of the bottom end of the protective shell 1, the outer surface of the disc column block 12 is penetrated through by the drawing cabinet 28, the disc column block 12 is located in the protective shell 1, and the drawing cabinet 28 is distributed in an equal angle mode relative to the central axis point of the disc column block 12.

The fixed projection 5 that is provided with of basal surface of disc piece 4, projection 5 runs through open slot 6, open slot 6 sets up the surface at connecting block 7, open slot 6 is connected for the block with projection 5, open slot 6 is about angular distribution such as the central axis point of connecting block 7, the inside of connecting block 7 is fixed and is provided with cylinder piece 8, cylinder piece 8 constitutes rotating-structure with protecting crust 1, disc piece 4 is at rotatory in-process, disc piece 4 can drive projection 5 when rotatory a week, let projection 5 card go into in the open slot 6, it is rotatory to promote connecting block 7 through open slot 6, thereby it is rotatory to make connecting block 7 drive cylinder piece 8, thereby when reaching disc piece 4 rotatory a week, connecting block 7 can drive cylinder piece 8 rotatory fifth a week.

The fixed block 9 that is provided with of basal surface of cylinder piece 8, the external fixed surface of fixed block 9 is provided with board 10, board 10 is the angular distribution such as about the central axis point of fixed block 9, basal surface fixedly connected with support column 11 of fixed block 9, the external fixed surface of support column 11 is provided with dish post piece 12, when cylinder piece 8 is rotatory fifth week, cylinder piece 8 can drive overlook personally submit polygonal fixed block 9 and rotate fifth week, thereby make board 10 on the fixed block 9 obtain the switching, reach the function of easy switching, simultaneously, fixed block 9 can drive support column 11 rotatory, let support column 11 can drive dish post piece 12 and rotate, thereby can let the pull cabinet 28 on the dish post piece 12 obtain switching, be convenient for take the file in different fields.

The outer surface of the bottom end of the supporting column 11 is connected with a crawler 13, the inner surface of the tail end of the crawler 13 is connected with a connecting column 14, the outer surfaces of the connecting column 14 and the supporting column 11 are both attached to the crawler 13, the connecting column 14 and the supporting column 11 both form a rotating structure with the protective shell 1, a display board 15 is fixedly arranged on the outer surface of the top end of the connecting column 14, the display board 15 penetrates through the outer surface of the protective shell 1, the display board 15 is distributed in an equal angle mode about the central axis point of the connecting column 14, the display board 15, the writing board 10, the pull cabinet 28 and the open slot 6 are distributed in the same number in the equal angle mode, when the supporting column 11 rotates, the supporting column 11 can drive the tightly attached crawler 13 to operate, the tail end of the crawler 13 can drive the tightly attached connecting column 14 to rotate, at the moment, the connecting column 14 can drive the display board 15 to rotate, and the display board 15, the writing board 10, the pull cabinet 28 and the open slot 6 are distributed in the same number in the equal angle mode, so that each time the tablet 10 is rotated to the right position, the drawer cabinet 28 and the display board 15 are also in the right position, and the display board 15 displays a main body corresponding to the documents stored in the drawer cabinet 28.

The surface of hand wheel 3 is run through by kicking block 16, kicking block 16 overlooks and personally submits the trapezoidal form, the terminal fixedly connected with compression spring 17 of kicking block 16, compression spring 17's terminal fixed setting is in the inside of hand wheel 3, kicking block 16 is connected for the block with protecting crust 1, kicking block 16 passes through compression spring 17 and constitutes elastic construction with hand wheel 3, hand wheel 3 constitutes rotating-structure with protecting crust 1, hand wheel 3 constitutes sliding construction with kicking block 16, when hand wheel 3 is rotatory, hand wheel 3 can drive kicking block 16 rotatory, and kicking block 16 overlooks and personally submits the trapezoidal form, when kicking block 16 receives the extrusion, kicking block 16 then can retract to the inside of hand wheel 3, and produce the compressive force to compression spring 17 and fill ability, until kicking block 16 no longer receives the extrusion force.

The inside of the protecting shell 1 is fixedly provided with a fixed spring 19, the top end of the fixed spring 19 is fixedly connected with a supporting rod 18, the supporting rod 18 and the protecting shell 1 form an elastic structure through the fixed spring 19, the elastic acting force of the fixed spring 19 is smaller than that of a compression spring 17, the protecting shell 1 and the supporting rod 18 form a sliding structure, the tail end of the supporting rod 18 is fixedly connected with a twist rod 20, the twist rod 20 penetrates through the outer surface of a roller 21, the roller 21 is installed inside the protecting shell 1, the protecting shell 1 and the roller 21 form a rotating structure, when the top block 16 rotates to be aligned with the supporting rod 18, the compression spring 17 with energy can push the top block 16, the top block 16 can push the supporting rod 18 under the action of the fixed spring 19, because the elastic acting force of the fixed spring 19 is smaller than that of the compression spring 17, the supporting rod 18 can be easily pushed, and the fixed spring 19 can be compressed and charged at the same time, at this time, the support rod 18 pushes the twist rod 20 to slide.

The fixed lug 22 that is provided with of internal surface of cylinder 21, lug 22 is connected for the block with fried dough twist rod 20, recess 23 has been seted up on the top surface of cylinder 21, recess 23 is located the below of storage box 24, storage box 24 is fixed to be set up on the top surface of protecting crust 1, chalk 25 has been placed to the inside of storage box 24, cylinder 21 is located the top on spout 26 top, the surface at protecting crust 1 is seted up to the end of spout 26, the fixed box 27 that takes that is provided with of protecting crust 1, the box 27 that takes is located the end of spout 26, when fried dough twist rod 20 slides, fried dough twist rod 20 can extrude lug 22, lug 22 receives the extrusion of spiral helicine fried dough twist rod 20, lug 22 can drive fixed connection's cylinder 21 rotatory, make cylinder 21 can drive recess 23 rotatory, let recess 23 with the inside chalk 25 of storage box 24 place introduce recess 23 through gravity, and rotatory recess 23 then can pour chalk 25 into spout 26, the sliding of the sliding groove 26 into the pick box 27 facilitates picking, whereas the reverse sliding of the twist rod 20 returns, and the roller 21 is rotated again to return, so that the grooves 23 are filled with chalk 25 again.

The working principle is as follows: when the industrial and commercial management teaching aid is used and is provided with a teaching aid with an easily-switched file storage effect, according to the figures 1, 2, 3, 4, 5 and 9, when a new writing board 10 is needed, firstly, the protective shell 1 is moved to a position needing to be used through the roller 2, the hand wheel 3 can be rotated to drive the disk block 4 to rotate for a circle through rotating the hand wheel 3, so that the disk block 4 drives the convex column 5 to rotate, the clamping open slot 6 is extruded to push the connecting block 7 to rotate for one fifth of a circle, at the moment, the connecting block 7 drives the pentagonal fixing block 9 to rotate for one fifth of a circle through the cylindrical block 8, the writing board 10 on the fixing block 9 is switched, meanwhile, the fixing block 9 drives the disk column 12 to rotate for one fifth of a circle through the supporting column 11, and files stored in the drawing cabinet 28 on the disk column 12 also correspond to the content needing to be taught, the supporting columns 11 can drive the connecting columns 14 to rotate through the tracks 13, the display boards 15 on the connecting columns 14 are also switched in a rotating mode, and what the theme of the content to be taught is displayed through the display boards 15, so that the teaching quality is improved, and the teaching is simpler and clearer;

and when the hand wheel 3 is rotatory, according to fig. 1, fig. 2, fig. 6, fig. 7 and fig. 8, at this moment, the hand wheel 3 also can drive the kicking block 16 under the action of compression spring 17 to rotate, when the kicking block 16 is close to the bracing piece 18, the compression spring 17 under the action of charging can then promote the kicking block 16, let the kicking block 16 can promote the bracing piece 18 under the action of fixed spring 19, let the bracing piece 18 promote the knurl pole 20 and extrude the lug 22, make the lug 22 drive the recess 23 on the cylinder 21 rotatory, will pour into spout 26 from the chalk 25 that the storage box 24 was adorned through the recess 23, slide to the box 27 of taking through spout 26, conveniently take the use, the holistic practicality has been increased.

Those not described in detail in this specification are within the skill of the art.

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 kind of business administration teaching has the teaching aid that has file storage effect and is easy to switch, it is characterized in that, comprise:

The protective shell (1) is the main protection object of the teaching aid as a whole, and the bottom of the protective shell (1) is fixedly provided with a roller (2);

a hand wheel (3), which penetrates through the top surface of the protective shell (1), and a disc block (4) is fixedly arranged on the bottom surface of the hand wheel (3);

The writing board (10) penetrates through the outer surface of the protective shell (1), the writing board (10) is fixedly arranged on the outer surface of the fixing block (9), and the fixing block (9) is located in the protective shell (1) internal;

The disk column block (12) penetrates the outer surface of the bottom end of the protective shell (1), the outer surface of the disk column block (12) is penetrated by the drawer (28), and the disk column block (12) Located inside the protective shell (1), the drawer cabinets (28) are equiangularly distributed with respect to the central axis point of the disk column block (12).

2. The teaching aid for business management teaching according to claim 1, characterized in that: the bottom surface of the disc block (4) is fixedly provided with a convex column (5), so that the The protruding post (5) penetrates through the opening slot (6), the opening slot (6) is opened on the outer surface of the connecting block (7), and the opening slot (6) is connected with the protruding post (5) in a snap-fit connection, so The opening groove (6) is equiangularly distributed with respect to the central axis point of the connecting block (7), and a cylindrical block (8) is fixedly arranged inside the connecting block (7). The cylindrical block (8) is connected to the protective shell (1). ) constitute a rotating structure.

3. The teaching aid for business management teaching according to claim 2, characterized in that: the bottom surface of the cylindrical block (8) is fixedly provided with a fixed block (9), the A writing board (10) is fixedly arranged on the outer surface of the fixing block (9), the writing board (10) is equiangularly distributed with respect to the central axis point of the fixing block (9), and the bottom surface of the fixing block (9) is fixed A support column (11) is connected, and a disk column block (12) is fixedly arranged on the outer surface of the support column (11).

4. The teaching aid for business management teaching according to claim 3, characterized in that: the outer surface of the bottom end of the support column (11) is connected with a crawler (13), and the The inner surface of the end of the crawler track (13) is connected with a connecting column (14), and the outer surfaces of the connecting column (14) and the supporting column (11) are fitted with the crawler track (13), the connecting column (14) and Both the support columns (11) and the protective shell (1) form a rotating structure, and a display board (15) is fixedly arranged on the outer surface of the top end of the connecting column (14), and the display board (15) penetrates through the protective shell (1). On the outer surface, the display board (15) is equiangularly distributed with respect to the central axis of the connecting column (14), the display board (15), the writing board (10), the drawer (28) and the opening slot (6) ) are the same number of equiangular distributions.

5. The teaching aid for teaching business management according to claim 1, characterized in that: the outer surface of the handwheel (3) is penetrated by a top block (16), and the top The block (16) has a trapezoidal shape in plan view, the end of the top block (16) is fixedly connected with a compression spring (17), and the end of the compression spring (17) is fixedly arranged inside the handwheel (3). The top block (16) and the protective shell (1) are in a snap connection, the top block (16) forms an elastic structure through the compression spring (17) and the handwheel (3), the handwheel (3) and the protective shell ( 1) Constitute a rotating structure, and the handwheel (3) and the top block (16) constitute a sliding structure.

6 . The teaching aid for business management teaching according to claim 1 , characterized in that: a fixed spring ( 19 ) is fixed inside the protective shell ( 1 ), and the fixed The top end of the spring (19) is fixedly connected with a support rod (18), the support rod (18) forms an elastic structure through the fixed spring (19) and the protective shell (1), and the elastic force of the fixed spring (19) is less than The elastic force of the compression spring (17), the protective shell (1) and the support rod (18) form a sliding structure, the end of the support rod (18) is fixedly connected with a twist rod (20), the twist rod ( 20) Running through the outer surface of the drum (21), the drum (21) is installed inside the protective shell (1), and the protective shell (1) and the drum (21) constitute a rotating structure.

7 . The teaching aid for business management teaching according to claim 6 , characterized in that: the inner surface of the drum ( 21 ) is fixedly provided with a convex block ( 22 ), and the convex The block (22) is connected with the twist rod (20) in a snap-fit connection, the top surface of the drum (21) is provided with a groove (23), and the groove (23) is located below the storage box (24). The storage box (24) is fixedly arranged on the top surface of the protective shell (1), the chalk (25) is placed inside the storage box (24), and the roller (21) is located above the top of the chute (26), so The end of the chute (26) is opened on the outer surface of the protective shell (1), and the outer surface of the protective shell (1) is fixedly provided with a taking box (27), and the taking box (27) is located in the chute (26).