Business administration major teaching device

Abstract

The utility model provides a business administration major teaching device, and relates to the field of teaching aids. The business administration major teaching device comprises a support, a writing board assembly, a side management board assembly, a top management board assembly, a side bevel lifting assembly, a case board assembly and a reverse bevel lifting assembly. The edge bevel lifting assemblies are arranged between the top management board assembly and the writing board assembly at the same end and between the side management board assemblies and the writing board assembly at the same end. According to the business administration major teaching device, locking of the unfolding states of the side management plate assemblies and the top management plate assembly is achieved through the reverse folding angles of the side folding angle lifting assemblies, the corresponding locking force is stable, and the top management plate assembly is pushed to be unfolded through the side management plate assembly at the lower position; the top management plate assembly at a high position can be conveniently operated by a low person to be unfolded at a low position, the side management plate assemblies and the top management plate assembly are unfolded and folded in a sliding mode, the front faces face forwards all the time, and a teacher can conveniently conduct professional analysis and recording.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a teaching device for business administration majors. Background Art

[0002] When teaching business administration, it is necessary to analyze many aspects (such as production, operation, R&D, cost, material, quality, manpower, etc.). Therefore, the writing whiteboard used for business administration teaching needs to have multiple management boards with different sections (such as production, operation, R&D, cost, material, quality, manpower, etc.) to enable students to participate in the teaching process, understand the management methods and importance of each part of the business administration process, and improve students' interest in learning.

[0003] In the related art, the management boards of different sections in the business administration professional teaching device are arranged at both ends and the upper side of the frame around the writing board, but the different management boards are rotatably connected to the frame through the damping shaft. First, the management board on the upper side of the frame is flipped up to a high height, and it is inconvenient for people with short stature to operate the flipping of the management board on the upper side of the frame; second, the flip-up management board needs to be unfolded before professional analysis can be carried out, and after the management board on the upper side of the frame is flipped up, the height of the management board is relatively high, and it is difficult for teachers with insufficient height to use it; third, the unfolded state of the management board is limited by the resistance of the damping shaft, and when the resistance is insufficient, the management board is easily flipped back. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a teaching device for business administration, in which the management board on the upper side of the frame can be driven to unfold by applying force at a low position, so that people with short stature can unfold the management board at a high position, and the management board always faces forward, and professional analysis work can be performed in both the unfolded and unfolded states. The management boards at both ends are locked by the inflected angles under the gravity of the upper management board, and the management boards at both ends support the upper management board by the inflected angles to reduce the occurrence of falling back.

[0005] The teaching device for business administration according to the embodiment of the utility model includes: a bracket, a writing board assembly, a side management board assembly, a top management board assembly, a side corner lifting assembly, a case board assembly and a reverse corner lifting assembly.

[0006] The writing board assembly is arranged on the bracket, the side management panel assembly is arranged in two, and the two side management panel assemblies are respectively slidably connected to the two ends of the lower side of the front side of the writing board assembly, the top management panel assembly is arranged in two, and the two top management panel assemblies are respectively slidably connected to the upper sides of the two ends of the front side of the writing board assembly, the side corner lifting assembly is arranged between the top management panel assembly and the side management panel assembly and the writing board assembly at the same end, after the side corner lifting assembly lifts the top management panel assembly, the inverted angle formed by the side corner lifting assembly abuts against the side of the writing board assembly, the two ends of the case board assembly are slidably connected to the middle part of the upper side of the writing board assembly, the inverted angle lifting assembly is arranged in two, the lower ends of the two inverted angle lifting assemblies are arranged on the writing board assembly, and the upper ends of the two inverted angle lifting assemblies are respectively hinged to the lower sides of the two ends of the case board assembly, and after the inverted angle lifting assembly lifts the case board assembly, the inverted angle formed by the inverted angle lifting assembly abuts against the writing board assembly.

[0007] According to some embodiments of the utility model, the writing board assembly includes a frame, three writing boards and a mounting plate, the three writing boards are arranged on the front side of the frame, two mounting grooves are formed between the three writing boards, the mounting plates are respectively fixedly connected to the two mounting grooves, the inverted corner formed by the edge corner lifting assembly abuts against the inner side edge of the frame, the lower end of the inverted corner lifting assembly is arranged on the mounting plate, and the inverted corner formed by the inverted corner lifting assembly abuts against the mounting plate.

[0008] According to some embodiments of the utility model, the side management panel assembly includes a side management panel, a first slide rail, a first side connecting plate and a slider guide member, each of the side management panels is divided into two industrial and commercial management modules, the first slide rail is arranged at the end portion on the lower front side of the writing board assembly, the lower end of the side management panel is slidably connected to the writing board assembly through the first slide rail, the first side connecting plate is fixedly connected to the back side of the side management panel near one end of the case board assembly, the corner of the side corner lifting assembly is arranged on the first side connecting plate, and the slider guide member is arranged between the back side of the upper end of the side management panel and the end of the writing board assembly.

[0009] According to some embodiments of the utility model, the slider guide member includes a guide rail, a slideway and a locking bolt, the guide rail is arranged on the back side of the upper end of the edge management plate, the slideway is fixedly connected to the end of the writing board assembly, the locking bolt thread passes through the slideway, and the locking bolt can be pressed against the guide rail.

[0010] According to some embodiments of the utility model, the top management panel assembly includes a top management panel, a second slide rail and a second side connecting plate, the second slide rail is arranged at the end portion on the upper front side of the writing board assembly, one end of the back side of the top management panel is slidably connected to the end portion on the upper front side of the writing board assembly via the second slide rail, the second side connecting plate is fixedly connected to the lower end of the back side of the top management panel, and the upper end of the edge corner lifting assembly is arranged on the second side connecting plate.

[0011] According to some embodiments of the utility model, the edge angle lifting assembly includes a first side ear seat, a first rocker arm, a third slide rail, a double ear seat, a second rocker arm and a first top ear seat, the first side ear seat is fixedly connected to the inner side edge of the end portion of the writing board assembly, the third slide rail is fixedly connected to the inner side surface of the first side connecting plate, the double ear seat is fixedly connected to the third slide rail, the first top ear seat is fixedly connected to the lower side surface of the second side connecting plate, the lower end of the first rocker arm is hinged to the first side ear seat, the upper end of the first rocker arm and the lower end of the second rocker arm are respectively hinged to the upper end and lower end of the double ear seat, the upper end of the second rocker arm is hinged to the first top ear seat, and after the double ear seat abuts against the inner side edge of the end portion of the writing board assembly, the first rocker arm and the second rocker arm form an inverted angle.

[0012] According to some embodiments of the utility model, the case board assembly includes a case board, a third side connecting plate and two fourth slide rails, the upper ends of the two fourth slide rails are fixedly connected to the upper end of the front side of the writing board assembly, the two ends of the back side of the case board are slidably connected to the writing board assembly through the fourth slide rails, the third side connecting plate is fixedly connected to the lower end of the back side of the case board, and the upper end of the inverted angle lifting assembly is arranged on the third side connecting plate.

[0013] According to some embodiments of the utility model, a triangular connecting block is provided at the lower end of the fourth slide rail, and the triangular connecting block is fixedly connected to the writing board assembly. The inclined surface of the triangular connecting block is located on the side of the triangular connecting block close to the inflected angle lifting assembly.

[0014] According to some embodiments of the utility model, the inflected angle lifting assembly includes a second side ear seat, a third rocker arm, a fourth rocker arm and a second top ear seat, the second side ear seat is fixedly connected to the writing board assembly, the second top ear seat is fixedly connected to the lower side of the third side connecting plate, the lower end of the third rocker arm is hinged to the second side ear seat, the upper end of the third rocker arm and the lower end of the fourth rocker arm are hinged to each other, the upper end of the fourth rocker arm is hinged to the second top ear seat, and after the upper end of the third rocker arm and the fourth rocker arm are hinged at the writing board assembly, the third rocker arm and the fourth rocker arm form an inflected angle.

[0015] According to some embodiments of the present invention, a handle is provided on the front side of the third swing rod.

[0016] The beneficial effects of the utility model are as follows: the side management panel assembly is pushed outward from the writing board assembly, the side management panel assembly drives the side corner lifting assembly to open, the top of the side corner lifting assembly pushes the top management panel assembly to rise, until the side management panel assembly pushes the side corner lifting assembly into a reversed angle state, the gravity of the side management panel assembly maintains the reversed angle state of the side corner lifting assembly, locks the side management panel assembly for recovery, and conversely supports the top management panel assembly through the reversed angle of the side corner lifting assembly, reducing the top management panel assembly Falling back, the side management panel assembly and the top management panel assembly are locked in the unfolded state through the inverted angle of the side folding lifting assembly, and the corresponding locking force is stable. The top management panel assembly is pushed to unfold by the side management panel assembly at the lower position, which is convenient for people with short height to operate the top management panel assembly at the lower position to unfold. The side management panel assembly and the top management panel assembly are unfolded and recovered by sliding, and the front is always facing forward. The side management panel assembly and the top management panel assembly are convenient for teachers to conduct professional analysis and record in the unfolded and retracted state. For the unfolding of the case panel assembly, the operator pushes the two inverted angle lifting assemblies at the lower position to fold outward, and the top of the two inverted angle lifting assemblies lifts the case panel assembly upward until the operator pushes the two inverted angle lifting assemblies into the inverted angle state, and the gravity of the case panel assembly keeps the inverted angle state of the inverted angle lifting assembly to form a lock. The case panel assembly is also unfolded and recovered by sliding, and the front is always facing forward. The case panel assembly is convenient for teachers to conduct professional analysis and record in the unfolded and retracted state.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a business administration professional teaching device according to an embodiment of the utility model;

[0020] Figure 2 is a schematic diagram of the three-dimensional structure of a writing board assembly according to an embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the side management plate and the top management plate in the retracted state according to an embodiment of the utility model;

[0022] Figure 4 According to the embodiment of the utility model Figure 3 A schematic diagram of the enlarged three-dimensional structure in the middle;

[0023] Figure 5 It is a structural schematic diagram of the side management panel and the top management panel in the unfolded state according to an embodiment of the utility model;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the case board in the retracted state according to an embodiment of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the case board in the unfolded state according to an embodiment of the utility model.

[0026] Icons: 100-bracket; 200-writing board assembly; 210-frame; 220-writing board; 230-mounting slot; 240-mounting plate; 300-side management board assembly; 310-side management board; 320-first slide rail; 330-first side connecting plate; 340-slider guide rail; 341-guide rail; 342-slideway; 343-locking bolt; 400-top management board assembly; 410-top management board; 420-second slide rail; 430-second side connecting plate; 500 -Edge angle lifting assembly; 510-first side ear seat; 520-first swing rod; 530-third slide rail; 540-double ear seat; 550-second swing rod; 560-first top ear seat; 600-case plate assembly; 610-case plate; 620-third side connecting plate; 630-fourth slide rail; 640-triangular connecting block; 700-reverse angle lifting assembly; 710-second side ear seat; 720-third swing rod; 730-fourth swing rod; 740-second top ear seat; 750-handle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The following describes a teaching device for business administration according to an embodiment of the utility model with reference to the accompanying drawings.

[0030] See also Figures 1 to 7 According to the embodiment of the utility model, the teaching device for business administration major includes: a bracket 100, a writing board assembly 200, a side management board assembly 300, a top management board assembly 400, an edge corner lifting assembly 500, a case board assembly 600 and an inverted corner lifting assembly 700.

[0031] See also Figure 1The writing board assembly 200 is arranged on the bracket 100, the side management board assembly 300 is arranged in two, and the two side management board assemblies 300 are respectively slidably connected to the two ends of the lower front side of the writing board assembly 200, the top management board assembly 400 is arranged in two, and the two top management board assemblies 400 are respectively slidably connected to the upper sides of the two ends of the front side of the writing board assembly 200, and the side corner lifting assembly 500 is arranged between the top management board assembly 400 and the side management board assembly 300 and the writing board assembly 200 at the same end, and the side corner lifting assembly 500 lifts the top management board assembly After the case board assembly 600 is lifted, the inverted corner formed by the edge corner lifting assembly 500 is against the side of the writing board assembly 200, and the two ends of the case board assembly 600 are slidably connected to the middle of the upper side of the writing board assembly 200. Two inverted corner lifting assemblies 700 are provided, and the lower ends of the two inverted corner lifting assemblies 700 are provided on the writing board assembly 200. The upper ends of the two inverted corner lifting assemblies 700 are respectively hinged to the lower sides of the two ends of the case board assembly 600. After the inverted corner lifting assembly 700 lifts the case board assembly 600, the inverted corner formed by the inverted corner lifting assembly 700 is against the writing board assembly 200. In this embodiment, the side walls at the two ends of the writing board assembly 200 are rotatably connected to the inner sides of the two ends of the bracket 100. When the writing board assembly 200 is flipped to a vertical position, the bracket 100 can lock the writing board assembly 200. The specific locking method is clear to those skilled in the art and will not be described in detail here. In some other embodiments, the writing board assembly 200 is directly fixedly connected to the inner side of both ends of the bracket 100. The side management board assembly 300 is pushed outward from the writing board assembly 200, and the side management board assembly 300 drives the side corner lifting assembly 500 to open. The top of the side corner lifting assembly 500 pushes the top management board assembly 400 upward until the side management board assembly 300 pushes the side corner lifting assembly 500 into a reverse angle state. The gravity of the side management board assembly 300 maintains the reverse angle state of the side corner lifting assembly 500, locking the side management board assembly 300 for recovery. On the contrary, the top management board assembly 400 is supported by the reverse angle of the side corner lifting assembly 500, reducing the top management board assembly 400. Falling back, the side management panel assembly 300 and the top management panel assembly 400 are locked in the expanded state through the inverted angle of the side folding lifting assembly 500, and the corresponding locking force is stable, and the top management panel assembly 400 is pushed to expand by the side management panel assembly 300 at a low position, which is convenient for people with short stature to operate the high top management panel assembly 400 at a low position to expand, and the side management panel assembly 300 and the top management panel assembly 400 are expanded and retracted by sliding, and the front side is always facing forward, and the side management panel assembly 300 and the top management panel assembly 400 are convenient for teachers to conduct professional analysis and record in the expanded and retracted states.To unfold the case plate assembly 600, the operator pushes the two lower inverted corner lifting assemblies 700 to fold outward, and the tops of the two inverted corner lifting assemblies 700 lift the case plate assembly 600 upward until the operator pushes the two inverted corner lifting assemblies 700 into an inverted angle state, and the gravity of the case plate assembly 600 keeps the inverted angle state of the inverted corner lifting assembly 700 to form a lock. The case plate assembly 600 is also unfolded and retracted by sliding, with the front always facing forward. The case plate assembly 600 is convenient for teachers to conduct professional analysis and record in both the unfolded and retracted states.

[0032] See also Figure 1 to Figure 2 The writing board assembly 200 includes a frame 210, three writing boards 220 and a mounting plate 240. The three writing boards 220 are arranged on the front of the frame 210. Two mounting grooves 230 are formed between the three writing boards 220. The mounting plates 240 are respectively fixedly connected in the two mounting grooves 230. The folded corner formed by the side corner lifting assembly 500 is against the inner side of the frame 210. The lower end of the folded corner lifting assembly 700 is arranged on the mounting plate 240. The folded corner formed by the folded corner lifting assembly 700 is against the mounting plate 240. It should be noted that in this embodiment, the back of the frame 210 can be provided with a whole writing board, so that when the back of the frame 210 is turned to the front, it can be used as an ordinary writing board. The three writing boards 220 are used by students to write down the management points of production management, business management and financial management. The side management board assembly 300 and the top management board assembly 400 are used by teachers to score and comment on the key points of production management, business management and financial management. A teacher with a short stature can give scores and comments after lowering the side management board assembly 300 and the top management board assembly 400, which is convenient for the teacher to use. After giving scores and comments, the side management board assembly 300 and the top management board assembly 400 can be unfolded. The case board assembly 600 can be used for teachers to write cases in advance, and then the case board assembly 600 can be raised to facilitate students to compare when writing the management points of production management, business management and financial management.

[0033] See also Figures 1 to 3The side management panel assembly 300 includes a side management panel 310, a first slide rail 320, a first side connection panel 330 and a slider guide member 340. Each side management panel 310 is divided into two business management modules. The first slide rail 320 is arranged at the end of the lower front side of the writing board assembly 200. The lower end of the side management panel 310 is slidably connected to the writing board assembly 200 through the first slide rail 320. The first side connection panel 330 is fixedly connected to the back of the side management panel 310 near one end of the case board assembly 600. The corner of the side corner lifting assembly 500 is arranged on the first side connection panel 330. The slider guide member 340 is arranged between the back of the upper end of the side management panel 310 and the end of the writing board assembly 200. When the side management panel 310 is unfolded, the lower end of the side management panel 310 slides outward of the writing board assembly 200 through the first slide rail 320, and the upper end of the side management panel 310 slides outward of the writing board assembly 200 through the slider guide member 340. The teacher can push the edge management plate 310 through the outer side of the first side connecting plate 330 , and the edge corner lifting assembly 500 is rooted at the corner using the inner side of the first side connecting plate 330 .

[0034] See also Figures 1 to 4 The slider guide member 340 includes a guide rail 341, a slideway 342 and a locking bolt 343. The guide rail 341 is arranged on the back of the upper end of the side management plate 310. The slideway 342 is fixedly connected to the end of the writing board assembly 200. The locking bolt 343 is threadedly penetrated through the slideway 342. The locking bolt 343 can be pressed against the guide rail 341. When the upper end of the side management plate 310 slides, the guide rail 341 slides along the slideway 342. When the side management plate 310 needs to be repeatedly unfolded and recovered, there is no need to tighten the locking bolt 343. The side management plate 310 and the top management plate assembly 400 are locked by using the inverted angle of the side angle lifting assembly 500. When the edge management panel 310 needs to be unfolded for a long time for display, the locking bolt 343 is tightened to lock the guide rail 341 on the slide 342, thereby increasing the resistance required for the edge management panel 310 to be retracted and reducing the possibility that a person accidentally uses a large force to hit the edge management panel 310, causing the edge management panel 310 to be forcibly retracted.

[0035] See also Figures 1 to 5The top management board assembly 400 includes a top management board 410, a second slide rail 420 and a second side connection plate 430. The second slide rail 420 is disposed at the end of the upper front side of the writing board assembly 200. One end of the back side of the top management board 410 is slidably connected to the end of the upper front side of the writing board assembly 200 through the second slide rail 420. The second side connection plate 430 is fixedly connected to the lower end of the back side of the top management board 410. The upper end of the edge folding and lifting assembly 500 is disposed on the second side connection plate 430. When the top management board 410 is unfolded, the upper end of the edge folding and lifting assembly 500 pushes the second side connection plate 430, and the second side connection plate 430 drives the top management board 410 to slide upward along the second slide rail 420 to unfold. Conversely, the top management board 410 slides downward and retracts through the second slide rail 420.

[0036] See also Figures 1 to 5 The edge angle lifting assembly 500 includes a first side ear seat 510, a first swing rod 520, a third slide rail 530, a double ear seat 540, a second swing rod 550 and a first top ear seat 560. The first side ear seat 510 is fixedly connected to the inner side edge of the end of the writing board assembly 200, the third slide rail 530 is fixedly connected to the inner side of the first side connecting plate 330, the double ear seat 540 is fixedly connected to the third slide rail 530, and the first top ear seat 560 is fixedly connected to the inner side edge of the end of the writing board assembly 200. 60 is fixedly connected to the lower side surface of the second side connecting plate 430, the lower end of the first swing arm 520 is hinged to the first side ear seat 510, the upper end of the first swing arm 520 and the lower end of the second swing arm 550 are respectively hinged to the upper and lower ends of the double ear seat 540, the upper end of the second swing arm 550 is hinged to the first top ear seat 560, and after the double ear seat 540 abuts against the inner side edge of the end of the writing board assembly 200, the first swing arm 520 and the second swing arm 550 form a reverse angle. When the edge management plate 310 slides outward from the writing board assembly 200, the first side connecting plate 330 on the edge management plate 310 drives the third slide rail 530 and the double ear seat 540 to move toward the inner side edge of the end of the frame 210, and the angle between the first swing arm 520 and the second swing arm 550 gradually increases. The double ear seat 540 hinged between the upper end of the first swing arm 520 and the lower end of the second swing arm 550 slides upward along the third slide rail 530, and the upper end of the second swing arm 550 pushes the top management plate 410 to rise. When the angle between the first swing arm 520 and the second swing arm 550 exceeds 180 degrees, the angle between the first swing arm 520 and the second swing arm 550 continues to increase to form a reverse angle until the double ear seat 540 presses against the inner side edge of the end of the upper frame 210 of the writing board assembly 200.

[0037] See also Figures 1 to 6The case board assembly 600 includes a case board 610, a third side connecting plate 620 and two fourth slide rails 630. The upper ends of the two fourth slide rails 630 are fixedly connected to the upper end of the front of the writing board assembly 200. The two ends of the back of the case board 610 are slidably connected to the writing board assembly 200 through the fourth slide rails 630. The third side connecting plate 620 is fixedly connected to the lower end of the back of the case board 610. The upper end of the inverted corner lifting assembly 700 is arranged on the third side connecting plate 620. The two ends of the case board 610 are interactively unfolded and recovered upward through the fourth slide rails 630. The case board 610 is connected to the upper end of the inverted corner lifting assembly 700 through the third side connecting plate 620.

[0038] See also Figures 1 to 6 A triangular connection block 640 is disposed at the lower end of the fourth slide rail 630. The triangular connection block 640 is fixedly connected to the writing board assembly 200 and is fixedly connected to the mounting groove 230. The inclined surface of the triangular connection block 640 is located on the side of the triangular connection block 640 close to the inverted angle lifting assembly 700. The lower end of the fourth slide rail 630 is supported by the triangular connection block 640. The inclined surface of the triangular connection block 640 is used to avoid interference when the inverted angle lifting assembly 700 is unfolded, so that the inverted angle lifting assembly 700 can smoothly form an inverted angle.

[0039] See also Figures 1 to 7 The inverted angle lifting assembly 700 includes a second side ear seat 710, a third swing rod 720, a fourth swing rod 730 and a second top ear seat 740. The second side ear seat 710 is fixedly connected to the writing board assembly 200, and the second side ear seat 710 is fixedly connected to the lower end of the mounting plate 240. The second top ear seat 740 is fixedly connected to the lower side of the third side connecting plate 620, the lower end of the third swing rod 720 is hinged to the second side ear seat 710, the upper end of the third swing rod 720 and the lower end of the fourth swing rod 730 are hinged to each other, the upper end of the fourth swing rod 730 is hinged to the second top ear seat 740, and after the upper end of the third swing rod 720 and the hinged part of the fourth swing rod 730 are against the writing board assembly 200, the third swing rod 720 and the fourth swing rod 730 form an inverted angle. A handle 750 is provided on the front of the third swing rod 720. The operator holds the handles 750 on the two lower third swing arms 720 with both hands respectively, and drives the third swing arms 720 to flip through the handles 750, so that the angle between the third swing arm 720 and the fourth swing arm 730 gradually increases, and the upper end of the fourth swing arm 730 pushes the case plate 610 to unfold upward. When the angle between the third swing arm 720 and the fourth swing arm 730 exceeds 180 degrees, the angle between the third swing arm 720 and the fourth swing arm 730 continues to increase to form a reverse angle, until the hinge between the third swing arm 720 and the fourth swing arm 730 abuts against the upper end of the mounting plate 240.

[0040] Specifically, the working principle of the business administration teaching device is as follows: when in use, the side management plate 310 is pushed through the outer side of the first side connecting plate 330, the lower end of the side management plate 310 slides toward the outside of the writing board assembly 200 through the first slide rail 320, and the upper end of the side management plate 310 slides toward the outside of the writing board assembly 200 through the slider guide member 340. The first side connecting plate 330 on the edge management plate 310 drives the third slide rail 530 and the double ear seat 540 to move toward the inner side edge of the end of the frame 210, and the angle between the first swing rod 520 and the second swing rod 550 gradually increases. The double ear seat 540 hinged at the upper end of the first swing rod 520 and the lower end of the second swing rod 550 slides upward along the third slide rail 530, and the upper end of the second swing rod 550 pushes the top management plate 410 to rise. When the angle between the first swing rod 520 and the second swing rod 550 exceeds 180 degrees, the angle between the first swing rod 520 and the second swing rod 550 continues to increase to form a reverse angle until the double ear seat 540 abuts against the inner side edge of the end of the frame 210 on the writing board assembly 200. The gravity of the edge management plate 310 maintains the reverse angle formed by the inner side edge of the end of the frame 210 abutted by the first swing rod 520 and the second swing rod 550 The side management panel 310 and the top management panel 410 are locked in the folded state by the first and second swing arms 520 and 550, respectively.

[0041] The operator grabs the handles 750 on the two lower third swing bars 720 with both hands, and drives the third swing bars 720 to flip through the handles 750. The angle between the third swing bar 720 and the fourth swing bar 730 gradually increases, and the upper end of the fourth swing bar 730 pushes the case plate 610 to unfold upward. When the angle between the third swing bar 720 and the fourth swing bar 730 exceeds 180 degrees, the angle between the third swing bar 720 and the fourth swing bar 730 continues to increase to form a reverse angle, until the hinge of the third swing bar 720 and the fourth swing bar 730 abuts against the upper end of the mounting plate 240, and the gravity of the case plate 610 maintains the reverse angle state formed by the third swing bar 720 and the fourth swing bar 730 against the mounting plate 240, thereby locking the case plate 610. The case plate 610 is also unfolded and retracted by sliding, with the front always facing forward. The case plate 610 is convenient for teachers to conduct professional analysis and record in both the unfolded and retracted states.

[0042] When the upper end of the side management panel 310 slides, the guide rail 341 slides along the slideway 342. When the side management panel 310 needs to be repeatedly unfolded and retracted, there is no need to tighten the locking bolt 343. The side management panel 310 and the top management panel 410 are locked by forming a reverse angle using the first swing rod 520 and the second swing rod 550 on the side angle lifting assembly 500. When the side management panel 310 needs to be unfolded for a long time for display, the locking bolt 343 is tightened to lock the guide rail 341 on the slideway 342, thereby increasing the resistance required for the side management panel 310 to be retracted and reducing the possibility that the side management panel 310 is forcibly retracted due to a person accidentally hitting the side management panel 310 with a large force.

[0043] The above are only embodiments of the present invention and are not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A teaching device for business administration, comprising a bracket and a writing board assembly, wherein the writing board assembly is arranged on the bracket, and characterized in that: Also includes: A side management board assembly, wherein the side management board assembly is provided in two pieces, and the two side management board assemblies are respectively slidably connected to the two ends of the lower side of the front side of the writing board assembly; A top management board assembly, wherein two top management board assemblies are provided, and the two top management board assemblies are respectively slidably connected to the upper sides of the two ends of the front side of the writing board assembly; An edge corner lifting assembly, the edge corner lifting assembly is arranged between the top management board assembly and the side management board assembly and the writing board assembly at the same end, after the edge corner lifting assembly lifts the top management board assembly, the inverted corner formed by the edge corner lifting assembly abuts against the side edge of the writing board assembly; A case board assembly, wherein both ends of the case board assembly are slidably connected to the middle portion of the upper side of the writing board assembly; The inverted corner lifting assembly is provided with two inverted corner lifting assemblies, the lower ends of the two inverted corner lifting assemblies are provided on the writing board assembly, the upper ends of the two inverted corner lifting assemblies are respectively hinged to the lower sides of the two ends of the case board assembly, after the inverted corner lifting assembly lifts the case board assembly, the inverted corner formed by the inverted corner lifting assembly abuts against the writing board assembly.

2. The teaching device for business administration according to claim 1, characterized in that: The writing board assembly includes a frame, three writing boards and a mounting plate. The three writing boards are arranged on the front side of the frame. Two mounting grooves are formed between the three writing boards. The mounting plates are respectively fixedly connected to the two mounting grooves. The inverted corner formed by the edge corner lifting assembly abuts against the inner side edge of the frame. The lower end of the inverted corner lifting assembly is arranged on the mounting plate. The inverted corner formed by the inverted corner lifting assembly abuts against the mounting plate.

3. The teaching device for business administration according to claim 1, characterized in that: The side management panel assembly includes a side management panel, a first slide rail, a first side connecting plate and a slider guide member, each of the side management panels is divided into two business management modules, the first slide rail is arranged at the end portion of the lower front side of the writing board assembly, the lower end of the side management panel is slidably connected to the writing board assembly via the first slide rail, the first side connecting plate is fixedly connected to the back side of the side management panel near one end of the case board assembly, the corner of the side corner lifting assembly is arranged on the first side connecting plate, and the slider guide member is arranged between the back side of the upper end of the side management panel and the end of the writing board assembly.

4. The teaching device for business administration according to claim 3 is characterized in that: The slider guide member includes a guide rail, a slideway and a locking bolt. The guide rail is arranged on the back side of the upper end of the edge management plate. The slideway is fixedly connected to the end of the writing board assembly. The locking bolt thread passes through the slideway, and the locking bolt can be pressed against the guide rail.

5. The teaching device for business administration according to claim 3, characterized in that: The top management panel assembly includes a top management panel, a second slide rail and a second side connecting plate, the second slide rail is arranged at the end portion on the upper front side of the writing board assembly, one end of the back side of the top management panel is slidably connected to the end portion on the upper front side of the writing board assembly via the second slide rail, the second side connecting plate is fixedly connected to the lower end of the back side of the top management panel, and the upper end of the edge corner lifting assembly is arranged on the second side connecting plate.

6. The teaching device for business administration according to claim 5, characterized in that: The edge angle lifting assembly includes a first side ear seat, a first swing arm, a third slide rail, a double ear seat, a second swing arm and a first top ear seat, the first side ear seat is fixedly connected to the inner side edge of the end portion of the writing board assembly, the third slide rail is fixedly connected to the inner side surface of the first side connecting plate, the double ear seat is fixedly connected to the third slide rail, the first top ear seat is fixedly connected to the lower side surface of the second side connecting plate, the lower end of the first swing arm is hinged to the first side ear seat, the upper end of the first swing arm and the lower end of the second swing arm are respectively hinged to the upper end and lower end of the double ear seat, the upper end of the second swing arm is hinged to the first top ear seat, and after the double ear seat abuts against the inner side edge of the end portion of the writing board assembly, the first swing arm and the second swing arm form an inverted angle.

7. The teaching device for business administration according to claim 1, characterized in that: The case board assembly includes a case board, a third side connecting plate and two fourth slide rails, the upper ends of the two fourth slide rails are fixedly connected to the upper end of the front side of the writing board assembly, the two ends of the back side of the case board are slidably connected to the writing board assembly through the fourth slide rails, the third side connecting plate is fixedly connected to the lower end of the back side of the case board, and the upper end of the inverted angle lifting assembly is arranged on the third side connecting plate.

8. The teaching device for business administration according to claim 7, characterized in that: A triangular connecting block is arranged at the lower end of the fourth slide rail, and the triangular connecting block is fixedly connected to the writing board assembly. The inclined surface of the triangular connecting block is located on a side of the triangular connecting block close to the inverted angle lifting assembly.

9. The teaching device for business administration according to claim 7, characterized in that: The inflected angle lifting assembly includes a second side ear seat, a third swing rod, a fourth swing rod and a second top ear seat, the second side ear seat is fixedly connected to the writing board assembly, the second top ear seat is fixedly connected to the lower side of the third side connecting plate, the lower end of the third swing rod is hinged to the second side ear seat, the upper end of the third swing rod and the lower end of the fourth swing rod are hinged to each other, the upper end of the fourth swing rod is hinged to the second top ear seat, and after the hinge between the upper end of the third swing rod and the fourth swing rod is against the writing board assembly, the third swing rod and the fourth swing rod form an inflected angle.

10. The teaching device for business administration according to claim 9, characterized in that: A handle is arranged on the front side of the third swing rod.

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