Teaching equipment for business training

Abstract

The invention discloses teaching equipment for business training, and relates to the technical field of business training, the teaching equipment comprises a base, a support rod, a telescopic rod and a placement table, and the support rod is fixedly connected to the upper surface of the base. The base, the supporting rod, the telescopic rod, the placing table, the expansion mechanism, the control assembly, the lifting mechanism, an adjusting supporting mechanism, an external expansion assembly, a movable supporting plate, supporting legs, a pressing rod, a linkage assembly, a rotating rod, a linkage disc, an arc-shaped extrusion groove, a linkage torsion groove, a protective shell and a pressing rotating shaft are used in cooperation; the use area of the placing table can be flexibly adjusted to adapt to training teaching aids of different numbers and sizes, insufficient space or idle occupied space is avoided, the height can be rapidly adjusted to fit teachers of different heights and site environments, the use comfort is improved, the supporting area of the base can be synchronously expanded or reduced in a linkage mode, and the use efficiency is improved. And the gravity center is prevented from shifting and toppling when the placing table rises or bears heavy objects, and the use safety effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of business training technology, specifically to a teaching device for business training. Background Technology

[0002] With the acceleration of enterprise digital transformation and the updating of industry professional skills, business training has become a core link for enterprises to improve employee capabilities and ensure production and operation efficiency. As the basic hardware supporting training activities, the performance and adaptability of teaching equipment for business training are directly related to the smoothness of the training process and the teaching effect. Among various teaching equipment for business training, the lectern is the core carrier for teachers to carry out teaching activities. Teachers need to place various teaching aids such as laptops, projector consoles, training materials, product demonstration samples, and blackboard tools on the lectern. At the same time, the lectern also needs to adapt to the usage needs of different scenarios such as small conference rooms, large training rooms, and temporary teaching points, and the requirements for its functionality and flexibility are increasing day by day.

[0003] However, existing lecterns have a fixed placement area. If a large number of demonstration tools are needed during training, the fixed placement area can lead to insufficient space, even affecting the pace and effectiveness of the demonstration. On the other hand, if a fixed large placement area is designed to accommodate large spaces, it will occupy too much space when not in use or when the training venue is small, significantly reducing the utilization rate of the venue. Secondly, the height and body type of the teachers participating in the business training vary, and the floor height of the lectern varies in different training venues. The existing lectern cannot quickly adapt to the height of the users and the venue environment. Long-term use will affect the physical comfort of the teachers, and the visibility of the demonstration tools may also be affected due to an unsuitable height. At the same time, when the placement area is large or the height is increased, the support area of ​​the base remains fixed. At this time, the center of gravity of the lectern is prone to shift upward or off-center, and the overall stability is significantly reduced. If the placement area is loaded with heavy objects, such as multiple electronic devices or heavy teaching materials, there may even be a risk of tipping over, which not only interferes with the normal conduct of the training, but also poses a safety hazard. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention aims to provide a teaching device for business training. This device features an adjustable platform area to accommodate different quantities and sizes of training aids, avoiding insufficient space or unused space. It allows for quick height adjustment to suit teachers of varying heights and venue conditions, improving user comfort. Furthermore, it can simultaneously expand or shrink the base support area to prevent the platform from shifting its center of gravity or tipping over when raised or carrying heavy objects, ensuring safe use. This invention improves upon or solves the problem of fixed platform areas in existing lecterns. If a large number or large-sized demonstration aids are needed during training, a fixed platform area can easily lead to insufficient space, even affecting the demonstration rhythm and effect. Conversely, to accommodate larger spaces... The proposed design of a fixed, large-sized platform would take up too much space when not in use or in small training areas, significantly reducing space utilization. Secondly, the height and build of teachers participating in professional training vary, and the floor height of the lectern differs in different training venues. The existing lectern cannot quickly adapt to the user's height and the venue environment, which would affect the teacher's physical comfort in the long run. It may also affect the visibility of teaching aids due to an unsuitable height. At the same time, when the platform area is large or the height is increased, the support area of ​​the base remains fixed. In this case, the center of gravity of the lectern is prone to shift upwards or off-center, and the overall stability is significantly reduced. If the platform is supported by heavy objects, such as multiple electronic devices or heavy teaching materials, there may even be a risk of tipping over, which not only interferes with the normal conduct of training but also poses a safety hazard.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a teaching device for business training, comprising a base, a support rod, a telescopic rod, and a placement platform. The support rod is fixedly connected to the upper surface of the base. The telescopic rod is disposed inside the support rod and extends out of the support rod at its upper end, and is slidably connected to the support rod. The placement platform is fixedly connected to the top end of the telescopic rod. An expansion mechanism is disposed inside the placement platform. A lifting mechanism is disposed on the rear side of the support rod. An adjustment support mechanism is disposed inside the base.

[0006] The extension mechanism includes a slide bar, an extension assembly, and a control assembly. There are two slide bars, which are respectively located on the front and rear sides inside the placement platform, and their left and right ends are respectively fixedly connected to the left and right side surfaces inside the placement platform. There are two extension assemblies, which are respectively located on the left and right sides at the upper end inside the placement platform. The control assembly is located at the lower end between the two extension assemblies.

[0007] The lifting mechanism is located at the rear end of the support rod and is fixedly connected to the support rod. A through groove is provided on the rear surface of the support rod.

[0008] The adjustment support mechanism includes an expansion component and a linkage component. There are four expansion components, which are respectively arranged around the inside of the base. The linkage component is arranged inside the base and its upper end extends into the support rod.

[0009] In a preferred embodiment of the present invention, the extension assembly includes an extension plate, a sliding seat, a threaded block, and an edge baffle. The extension plate is disposed inside the left side of the placement platform, and its left end extends out of the placement platform and is slidably connected to the placement platform. There are two sliding seats, which are respectively fixedly connected to the front and rear sides of the right end of the lower surface of the extension plate. The lower ends of the two sliding seats are respectively sleeved on the surfaces of the two sliding rods and are slidably connected to the sliding rods. The threaded block is fixedly connected to the lower end surface of the right end of the extension plate, and the edge baffle is fixedly connected to the upper surface of the end of the extension plate that extends out of the placement platform.

[0010] In a preferred embodiment of the present invention, the control component includes a screw, a worm gear, a worm, and a knob. The screw is disposed below the two extension plates, and its left and right ends respectively pass through the two threaded blocks and are threadedly connected to the threaded blocks. Both the left and right ends of the screw are rotatably connected to the placement platform. The worm gear is sleeved on the middle end surface of the screw and is fixedly connected to the screw. The worm is disposed below the worm gear and meshes with the worm gear. Both its front and rear ends are rotatably connected to the placement platform. The front end of the worm extends out of the placement platform, and the knob is fixedly connected to the front end of the worm.

[0011] In a preferred embodiment of the present invention, the lifting mechanism includes a motor, a second screw, a connecting block, and a rotating seat. The motor is fixedly connected to the lower end of the rear surface of the support rod, the second screw is fixedly connected to the upper output end of the motor, the connecting block is sleeved on the surface of the second screw and threadedly connected to the second screw, the front end of the connecting block extends into the interior of the support rod through the through groove and is fixedly connected to the lower end of the rear surface of the telescopic rod, and is slidably connected to the through groove, the rotating seat is sleeved on the upper surface of the second screw and rotatably connected to the second screw, and the front end is fixedly connected to the upper end of the rear surface of the support rod.

[0012] As a preferred embodiment of the present invention, a protective shell is fitted onto the surface of the screw and the motor, and the front side of the protective shell is fixedly connected to the rear surface of the support rod.

[0013] As a preferred embodiment of the present invention, the expansion component includes a movable support plate, a support foot, and a pressure rod. The movable support plate is disposed inside the base on the left side, and its left end extends out of the base and is slidably connected to the base. The support foot is fixedly connected to one end of the movable support plate that extends out of the base, and the pressure rod is fixedly connected to the lower surface of the right end of the movable support plate.

[0014] In a preferred embodiment of the present invention, the linkage assembly includes a rotating rod, a linkage disc, an arc-shaped extrusion groove, and a linkage torsion groove. The lower end of the rotating rod is disposed inside the base and rotatably connected to the base. The upper end extends into the support rod and into the telescopic rod, and is movably connected to the support rod and the telescopic rod. The linkage disc is disposed at the lower end of the base and sleeved on the lower end surface of the rotating rod, and is fixedly connected to the rotating rod. There are four arc-shaped extrusion grooves, which are respectively opened around the linkage disc and correspond to the four pressure rods. The lower ends of the four pressure rods are respectively disposed inside the four arc-shaped extrusion grooves and are movably connected to the arc-shaped extrusion grooves. The linkage torsion groove is opened on the left rear side surface of the upper end of the rotating rod.

[0015] As a preferred embodiment of the present invention, the linkage torsion groove is an upward spiral shape.

[0016] As a preferred embodiment of the present invention, a pressure shaft is fixedly connected to the rear surface of the lower end of the telescopic rod, and the front end of the pressure shaft is disposed at the lower end of the linkage torsion groove and is movably connected to the linkage torsion groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This invention, through the coordinated use of a base, support rod, telescopic rod, placement platform, extension mechanism, slide rod, extension component, extension plate, sliding seat, threaded block, edge baffle, control component, screw one, worm gear, worm, knob, lifting mechanism, through groove, motor, screw two, connecting block, rotating seat, adjusting support mechanism, outer expansion component, movable support plate, support foot, pressure rod, linkage component, rotating rod, linkage disc, arc-shaped extrusion groove, linkage torsion groove, protective shell, and pressure rotating shaft, improves or solves to a certain extent the problem of the fixed placement platform area of ​​existing lecterns. If a large number or large-sized demonstration teaching aids are needed during training, the fixed-area placement platform is prone to insufficient space, even affecting the demonstration rhythm and effect. However, to adapt to the needs of large spaces, the fixed-area placement platform can be used to a certain extent. Designing a fixed, large-sized platform would take up too much space when not in use or when training space is small, significantly reducing space utilization. Secondly, the height and build of teachers participating in business training vary, and the floor height of the podium varies in different training venues. The existing podium cannot quickly adapt to the height of the users and the venue environment. Long-term use will affect the physical comfort of teachers, and the visibility of teaching aids may also be affected due to unsuitable height. At the same time, when the platform area is large or the height is increased, the support area of ​​the base remains fixed. At this time, the center of gravity of the podium is prone to shift upward or off-center, and the overall stability is significantly reduced. If the platform is loaded with heavy objects, such as multiple electronic devices or heavy teaching materials, there may even be a risk of tipping over, which not only interferes with the normal conduct of training, but also poses a safety hazard.

[0019] 2. By setting up an extension mechanism, the extension plate can be easily controlled to extend and retract via a knob, flexibly adjusting the usable area of ​​the placement platform. This not only meets the needs of placing multiple teaching aids, but also saves space when not in use. Meanwhile, the edge baffles can prevent teaching aids from slipping off.

[0020] 3. By setting up a lifting mechanism, the height of the platform can be quickly and accurately adjusted by a motor drive, adapting to users of different heights and the height requirements of the venue. At the same time, the protective shell can protect the internal components and reduce safety hazards.

[0021] 4. By setting up an adjustable support mechanism, the support area of ​​the base can be changed synchronously with the height of the placement platform. When the placement platform is raised, the support range is expanded to prevent tipping, and when it is lowered, the footprint is reduced, thus always maintaining a balance between the stability and spatial adaptability of the lectern. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the lectern of the present invention;

[0023] Figure 2 A schematic diagram of the exploded three-dimensional structure of the extended mechanism;

[0024] Figure 3 A three-dimensional diagram of the exploded structure of the control component;

[0025] Figure 4 This is a three-dimensional structural diagram of the lifting mechanism;

[0026] Figure 5 A cross-sectional three-dimensional structural diagram of the support rod and the telescopic rod;

[0027] Figure 6 A schematic diagram of the exploded three-dimensional structure for adjusting the support mechanism;

[0028] Figure 7 This is a schematic diagram of the exploded three-dimensional structure of the linkage component.

[0029] In the diagram: 1. Base; 2. Support rod; 3. Telescopic rod; 4. Placement platform; 5. Extension mechanism; 51. Slide rod; 52. Extension assembly; 521. Extension plate; 522. Sliding seat; 523. Threaded block; 524. Edge baffle; 53. Control assembly; 531. Screw one; 532. Worm gear; 533. Worm; 534. Knob; 6. Lifting mechanism; 61. Through slot; 62. Motor; 63. Screw two; 64. Connecting block; 65. Rotating seat; 7. Adjustment support mechanism; 71. Outward expansion assembly; 711. Movable support plate; 712. Support foot; 713. Pressure rod; 72. Linkage assembly; 721. Rotating rod; 722. Linkage disc; 723. Arc-shaped extrusion groove; 724. Linkage torsion groove; 8. Protective shell; 9. Pressure shaft. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1

[0035] Reference Figure 1-7 The first embodiment of the present invention provides a teaching device for business training, including a base 1, a support rod 2, a telescopic rod 3 and a placement platform 4. The support rod 2 is fixedly connected to the upper surface of the base 1. The telescopic rod 3 is disposed inside the support rod 2 and extends out of the support rod 2 and is slidably connected to the support rod 2. The placement platform 4 is fixedly connected to the top of the telescopic rod 3. An expansion mechanism 5 is disposed inside the placement platform 4. A lifting mechanism 6 is disposed on the rear side of the support rod 2. An adjustment support mechanism 7 is disposed inside the base 1.

[0036] The extension mechanism 5 includes a slide bar 51, an extension component 52, and a control component 53. There are two slide bars 51, which are respectively located on the front and rear sides inside the placement platform 4, and the left and right ends are respectively fixedly connected to the left and right side surfaces inside the placement platform 4. There are two extension components 52, which are respectively located on the left and right sides at the upper end inside the placement platform 4. The control component 53 is located at the lower end between the two extension components 52.

[0037] The lifting mechanism 6 is located at the rear end of the support rod 2 and is fixedly connected to the support rod 2. A through groove 61 is provided on the rear surface of the support rod 2.

[0038] The adjustment support mechanism 7 includes an expansion component 71 and a linkage component 72. There are four expansion components 71, which are respectively arranged around the inside of the base 1. The linkage component 72 is arranged inside the base 1 and its upper end extends into the support rod 2.

[0039] Specifically, the usable area of ​​the placement platform 4 can be flexibly adjusted to accommodate training tools of different sizes, quickly adapt to the user's height and the height of the venue, and the support area of ​​the base 1 can be adjusted simultaneously to ensure stability, effectively improving venue utilization and safety.

[0040] Furthermore, the extension mechanism 5 drives the extension component 52 to extend and retract through the control component 53 to change the area of ​​the placement platform 4, the lifting mechanism 6 drives the telescopic rod 3 to move up and down to adjust the height of the placement platform 4, and the adjustment support mechanism 7 moves up and down with the telescopic rod 3 in conjunction with the extension component 71 to synchronously change the support range of the base 1. The three mechanisms work together to achieve the multi-functional adaptation of the lectern.

[0041] Example 2

[0042] In the second embodiment of the present invention, the extension component 52 includes an extension plate 521, a sliding seat 522, a threaded block 523, and an edge baffle 524. The extension plate 521 is disposed inside the left side of the placement platform 4, and its left end extends out of the placement platform 4 and is slidably connected to the placement platform 4. There are two sliding seats 522, which are respectively fixedly connected to the front and rear sides of the right end of the lower surface of the extension plate 521. The lower ends of the two sliding seats 522 are respectively sleeved on the surfaces of the two slide rods 51 and are slidably connected to the slide rods 51. The threaded block 523 is fixedly connected to the lower end surface of the right end of the extension plate 521. The edge baffle 524 is fixedly connected to the upper surface of the end of the extension plate 521 that extends out of the placement platform 4.

[0043] The control component 53 includes a screw 531, a worm gear 532, a worm 533, and a knob 534. The screw 531 is located below the two extension plates 521, and its left and right ends pass through two threaded blocks 523 respectively and are threadedly connected to the threaded blocks 523. Both the left and right ends of the screw 531 are rotatably connected to the placement platform 4. The worm gear 532 is sleeved on the middle surface of the screw 531 and is fixedly connected to the screw 531. The worm 533 is located below the worm gear 532 and is meshed with the worm gear 532. Both its front and rear ends are rotatably connected to the placement platform 4. The front end of the worm 533 extends out of the placement platform 4, and the knob 534 is fixedly connected to the front end of the worm 533.

[0044] Specifically, by setting up the extension mechanism 5, the extension plate 521 can be easily extended and retracted by the knob 534, and the usable area of ​​the placement table 4 can be flexibly adjusted. This not only meets the needs of placing multiple teaching aids, but also can be retracted to save space when not in use. At the same time, the edge baffle 524 can prevent the teaching aids from slipping off.

[0045] Furthermore, rotating the knob 534 drives the worm gear 533 to rotate, and the worm gear 533 meshes with and drives the worm wheel 532 to rotate synchronously with the screw 531. The screw 531 drives the threaded blocks 523 on both sides and the extension plate 521 to slide along the slide bar 51 through the threaded transmission. Clockwise rotation allows the extension plate 521 to extend to expand the area, and counterclockwise rotation allows it to retract to reduce the footprint.

[0046] Example 3

[0047] In the third embodiment of the present invention, the lifting mechanism 6 includes a motor 62, a second screw 63, a connecting block 64, and a rotating seat 65. The motor 62 is fixedly connected to the lower end of the rear surface of the support rod 2. The second screw 63 is fixedly connected to the upper output end of the motor 62. The connecting block 64 is sleeved on the surface of the second screw 63 and threadedly connected to the second screw 63. The front end of the connecting block 64 extends into the interior of the support rod 2 through the through groove 61 and is fixedly connected to the lower end of the rear surface of the telescopic rod 3, and is slidably connected to the through groove 61. The rotating seat 65 is sleeved on the upper surface of the second screw 63 and rotatably connected to the second screw 63, and its front end is fixedly connected to the upper end of the rear surface of the support rod 2.

[0048] A protective shell 8 is fitted onto the surface of the screw 63 and the motor 62, and the front side of the protective shell 8 is fixedly connected to the rear side surface of the support rod 2.

[0049] Specifically, by setting up the lifting mechanism 6, the height of the placement platform 4 can be quickly and accurately adjusted by the motor 62, adapting to the height requirements of users of different heights and venues. At the same time, the protective shell 8 can protect the internal components and reduce safety hazards.

[0050] Furthermore, the starter motor 62 drives the screw 63 to rotate. The screw 63 pulls the connecting block 64 to slide up and down along the through groove 61 through the threaded transmission. The connecting block 64 drives the telescopic rod 3 to extend and retract within the support rod 2, thereby realizing the lifting and lowering of the placement platform 4. The rotating seat 65 limits the top of the screw 63 to ensure stability, while the protective shell 8 isolates it from external corrosion and accidental contact.

[0051] Example 4

[0052] In the fourth embodiment of the present invention, the external expansion component 71 includes a movable support plate 711, a support foot 712, and a pressure rod 713. The movable support plate 711 is disposed inside the left side of the base 1, and its left end extends out of the base 1 and is slidably connected to the base 1. The support foot 712 is fixedly connected to one end of the movable support plate 711 that extends out of the base 1. The pressure rod 713 is fixedly connected to the lower surface of the right end of the movable support plate 711.

[0053] The linkage assembly 72 includes a rotating rod 721, a linkage disc 722, an arc-shaped extrusion groove 723, and a linkage torsion groove 724. The lower end of the rotating rod 721 is located inside the base 1 and is rotatably connected to the base 1. The upper end extends into the support rod 2 and into the telescopic rod 3 and is movably connected to the support rod 2 and the telescopic rod 3. The linkage disc 722 is located at the lower end inside the base 1 and is sleeved on the lower surface of the rotating rod 721 and is fixedly connected to the rotating rod 721. There are four arc-shaped extrusion grooves 723, which are respectively opened around the linkage disc 722 and correspond to the four pressure rods 713. The lower ends of the four pressure rods 713 are respectively located inside the four arc-shaped extrusion grooves 723 and are movably connected to the arc-shaped extrusion grooves 723. The linkage torsion groove 724 is opened on the left rear side surface of the upper end of the rotating rod 721.

[0054] The linkage torsion groove 724 is an upward spiral shape;

[0055] A pressure shaft 9 is fixedly connected to the rear surface of the lower end of the telescopic rod 3. The front end of the pressure shaft 9 is located at the lower end of the linkage torsion groove 724 and is movably connected to the linkage torsion groove 724.

[0056] Specifically, by setting up an adjustable support mechanism 7, the support area of ​​the base 1 can be changed synchronously with the height adjustment of the placement platform 4. When the placement platform 4 is raised, the support range is expanded to prevent tipping, and when it is lowered, the footprint is reduced, thus always maintaining a balance between the stability and spatial adaptability of the lectern.

[0057] Furthermore, when the placement platform 4 is raised, the telescopic rod 3 drives the pressure shaft 9 to move upward, squeezing the spiral linkage torsion groove 724 of the rotating rod 721 to rotate the rotating rod 721. The rotating rod 721 drives the linkage disc 722 to rotate, and the linkage disc 722 pushes the pressure rod 713 and the movable support plate 711 to extend outward through the arc-shaped extrusion groove 723. The support foot 712 unfolds simultaneously to expand the support area. When the placement platform 4 is lowered, the pressure shaft 9 moves downward to drive the rotating rod 721 to reverse, and the linkage disc 722 rotates in the opposite direction to pull the pressure rod 713 and the movable support plate 711 back through the arc-shaped extrusion groove 723. The support foot 712 retracts to reduce the support area, realizing the dynamic adaptation of the support area and the height of the placement platform 4.

[0058] Working principle:

[0059] As the worm gear 533 rotates, it drives the worm wheel 532, which meshes with it, to rotate synchronously. Since the worm wheel 532 is sleeved on the middle end of the screw 531 and fixed to it, the rotation of the worm wheel 532 directly drives the screw 531 to rotate around its own axis. Because the screw 531 has two threaded blocks 523 passing through the two extension components 52 at its left and right ends respectively, and the screw 531 and the threaded blocks 523 are threadedly connected, and the threaded blocks 523 are fixed to the lower surface of the extension plate 521, and the extension plate 521 is sleeved on the slide rod 51 inside the placement platform 4 via a sliding seat 522, the fixed slide rod 51 restricts the rotational freedom of the extension plate 521. Therefore, when the screw 531 rotates, it drives the screw 531 to rotate through the threaded transmission. The threaded blocks 523 on the left and right sides move in opposite or the same direction along the axis of the screw 531. When the knob 534 is turned clockwise, the threaded blocks 523 can drive the corresponding extension plates 521 to slide along the slide bar 51 to the outside of the placement platform 4, so that the left end of the extension plate 521 extends out of the placement platform 4, thereby increasing the overall usable area of ​​the placement platform 4 to accommodate more or larger training aids. When the knob 534 is turned counterclockwise, the threaded blocks 523 drive the extension plates 521 to retract along the slide bar 51 into the placement platform 4, reducing the space occupied when not in use. In addition, the edge baffle 524 on the upper surface of the extension end of the extension plate 521 will prevent the teaching aids from sliding off when the extension plate 521 is extended, further ensuring the stability of use.

[0060] When adjusting the operating height, the control motor 62 starts to drive the screw 63 to rotate. As the screw 63 rotates, it drives the connecting block 64, which is sleeved on its surface, to move up and down along the axial direction of the screw 63 via a threaded transmission. Since the front end of the connecting block 64 extends through the through groove 61 on the rear surface of the support rod 2 into the interior of the support rod 2 and is fixedly connected to the lower end of the rear surface of the telescopic rod 3, and the through groove 61 limits the rotational freedom of the connecting block 64, the up and down movement of the connecting block 64 directly pulls the telescopic rod 3 to slide vertically inside the support rod 2. When the motor 62 rotates forward, the screw 63 drives the connecting block 64 to move upward, and the telescopic rod 3 moves accordingly. The support rod 2 extends upward, which in turn pushes the top platform 4 to rise synchronously to accommodate taller users or venues that require a higher demonstration view. When the motor 62 reverses, the connecting block 64 moves downward along the screw 63, the telescopic rod 3 retracts into the support rod 2, and the platform 4 lowers synchronously to meet the needs of shorter users or venues with low ceilings. In addition, the protective shell 8 can completely enclose the screw 63 and the motor 62, which can not only isolate external dust and water stains from the corrosion of internal transmission components, preventing parts from rusting or short circuits, but also prevent users from accidentally touching the rotating screw 63 or motor 62 during training and operation, reducing safety hazards.

[0061] During the process of raising the height of the placement platform 4, the upward movement of the telescopic rod 3 will drive the pressure shaft 9 to move upward as well. Since the front end of the pressure shaft 9 is embedded in the spiral linkage torsion groove 724 at the upper end of the rotating rod 721, and the linkage torsion groove 724 has an upward spiral structure, the upward movement of the pressure shaft 9 will generate an axial thrust that squeezes the inner wall of the linkage torsion groove 724, thereby driving the rotating rod 721 to rotate around its own axis. While the rotating rod 721 rotates, it will drive the linkage plate 722 fixed at the lower end to rotate synchronously. The arc-shaped extrusion groove 723 opened around the linkage plate 722 is respectively embedded with four pressure rods 713 of the outward expansion component 71. As the linkage plate 722 rotates, the inner wall of the arc-shaped extrusion groove 723 will exert an axial thrust that squeezes the inner wall of the pressure shaft 721. The rod 713 generates a radial compressive force, pushing the pressure rod 713 to move horizontally outward from the base 1. Since the pressure rod 713 is fixedly connected to the movable support plate 711, the movement of the pressure rod 713 will cause the movable support plate 711 to slide out from the inside of the base 1, so that the movable support plate 711 extends to the outside of the base 1. At the same time, the support foot 712 at the end of the movable support plate 711 unfolds outward, increasing the contact support area between the base 1 and the ground. Through this linkage process, the support range of the base 1 can be expanded simultaneously when the height of the placement platform 4 is increased, avoiding the decrease in the stability of the lectern due to the upward shift of the center of gravity. Even if the placement platform 4 carries a lot of teaching aids or is at a high height, the overall structure can remain stable, effectively reducing the risk of tipping over.

[0062] During the process of lowering the height of the placement platform 4, the telescopic rod 3 moves downward, which drives the pressure shaft 9 to move downward as well. Since the pressure shaft 9 is always embedded in the spiral linkage torsion groove 724 at the upper end of the rotating rod 721, when it moves downward, it will exert reverse pressure on the inner wall of the linkage torsion groove 724, driving the rotating rod 721 to rotate in the opposite direction when it is raised. The rotating rod 721 reverses and drives the linkage disc 722 fixed at the lower end to rotate synchronously. The arc-shaped pressing groove 723 around the linkage disc 722 exerts reverse pressure on the pressure rod 713, pulling the pressure rod 713 back into the base 1. The pressure rod 713 then pulls the movable support plate 711 to slide back from the outside of the base 1 to the inside. The support foot 712 at the end of the movable support plate 711 also retracts, so that the contact support area between the base 1 and the ground is reduced synchronously, restoring the support state suitable for the low-height placement platform 4. This ensures that the support of the base 1 and the overall center of gravity are always matched when the placement platform 4 is lowered, avoiding occupying too much space when idle.

[0063] In summary: The system comprises a base 1, support rod 2, telescopic rod 3, placement platform 4, extension mechanism 5, slide rod 51, extension assembly 52, extension plate 521, sliding seat 522, threaded block 523, edge baffle 524, control assembly 53, screw one 531, worm gear 532, worm 533, knob 534, lifting mechanism 6, through slot 61, motor 62, screw two 63, connecting block 64, rotating seat 65, adjusting support mechanism 7, outward expansion assembly 71, movable support plate 711, support foot 712, and pressure rod 713. The coordinated use of linkage components 72, rotating rod 721, linkage disc 722, arc-shaped extrusion groove 723, linkage torsion groove 724, protective shell 8, and pressure shaft 9 enables flexible adjustment of the placement platform's usable area to accommodate different quantities and sizes of training aids, avoiding insufficient space or idle land occupation. It can quickly adjust the height to suit teachers of different heights and venue environments, improving user comfort. Furthermore, it can synchronously expand or shrink the base support area to prevent the center of gravity from shifting or tipping over when the placement platform is raised or carrying heavy objects, ensuring safe use.

[0064] The screw 531, screw 63, motor 62, worm gear 532, and worm 533 used in this application can be additionally equipped with protective measures of common knowledge in the field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0065] It should be noted that screw 531, screw 63, motor 62, worm gear 532 and worm 533 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0066] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0067] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0068] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A teaching device for business training, comprising a base (1), a support rod (2), an extension rod (3) and a placement table (4), characterized in that: The support rod (2) is fixedly connected to the upper surface of the base (1), the telescopic rod (3) is arranged inside the support rod (2) and extends out of the support rod (2) at the upper end and is in sliding connection with the support rod (2), the placing table (4) is fixedly connected to the top end of the telescopic rod (3), the placing table (4) is internally provided with an expansion mechanism (5), the rear side of the support rod (2) is provided with a lifting mechanism (6), and the inside of the base (1) is provided with an adjusting support mechanism (7). The expansion mechanism (5) comprises slide rods (51), extension assemblies (52) and control assemblies (53), the number of the slide rods (51) is two, which are arranged on the front and rear sides inside the placing table (4) and are fixedly connected to the left and right side surfaces inside the placing table (4), the number of the extension assemblies (52) is two, which are arranged on the left and right sides of the upper end inside the placing table (4), and the control assemblies (53) are arranged at the lower end between the two extension assemblies (52). The lifting mechanism (6) is arranged at the rear end of the support rod (2) and is fixedly connected to the support rod (2), and a through groove (61) is formed in the rear surface of the support rod (2). The adjusting support mechanism (7) comprises outer expansion assemblies (71) and linkage assemblies (72), the number of the outer expansion assemblies (71) is four, which are arranged around the inside of the base (1), and the linkage assemblies (72) are arranged inside the base (1) and extend into the inside of the support rod (2) at the upper end.

2. The teaching apparatus for service training according to claim 1, characterized by: The extension assembly (52) comprises an extension plate (521), slide seats (522), threaded blocks (523) and edge baffle plates (524), the extension plate (521) is arranged on the left side inside the placing table (4) and extends out of the placing table (4) at the left end and is in sliding connection with the placing table (4), the number of the slide seats (522) is two, which are fixedly connected to the front and rear sides of the right end lower surface of the extension plate (521), the lower ends of the two slide seats (522) are sleeved on the surfaces of the two slide rods (51) and are in sliding connection with the slide rods (51), the threaded block (523) is fixedly connected to the lower end surface of the right end of the extension plate (521), and the edge baffle plate (524) is fixedly connected to the upper surface of the end of the extension plate (521) extending out of the placing table (4).

3. The teaching apparatus for service training according to claim 2, characterized in that: The control assembly (53) comprises a screw rod I (531), a worm wheel (532), a worm (533) and a knob (534), the screw rod I (531) is arranged below the two extension plates (521), and the left and right ends penetrate through the two threaded blocks (523) respectively and are threadedly connected with the threaded blocks (523), the left and right ends of the screw rod I (531) are rotatably connected with the placement table (4), the worm wheel (532) is sleeved on the middle end surface of the screw rod I (531) and is fixedly connected with the screw rod I (531), the worm (533) is arranged below the worm wheel (532) and is meshedly connected with the worm wheel (532), and the front and rear ends are rotatably connected with the placement table (4), the worm (533) extends out of the placement table (4) at the front end, and the knob (534) is fixedly connected at the front end of the worm (533).

4. The teaching apparatus for service training according to claim 1, characterized by: The lifting mechanism (6) comprises a motor (62), a screw rod II (63), a connecting block (64) and a rotating seat (65), the motor (62) is fixedly connected to the lower end of the rear surface of the supporting rod (2), the screw rod II (63) is fixedly connected to the upper side output end of the motor (62), the connecting block (64) is sleeved on the surface of the screw rod II (63) and is threadedly connected with the screw rod II (63), the front end of the connecting block (64) extends into the inside of the supporting rod (2) through the through groove (61) and is fixedly connected with the rear surface lower end of the telescopic rod (3) and is slidably connected with the through groove (61), and the rotating seat (65) is sleeved on the upper end surface of the screw rod II (63) and is rotatably connected with the screw rod II (63), and the front end is fixedly connected with the rear surface upper end of the supporting rod (2).

5. The teaching apparatus for service training according to claim 4, characterized in that: The surfaces of the screw rod II (63) and the motor (62) are sleeved with a protective shell (8), and the front side of the protective shell (8) is fixedly connected with the rear side surface of the supporting rod (2).

6. The teaching apparatus for service training according to claim 1, characterized by: The outward expansion assembly (71) comprises a movable supporting plate (711), a supporting leg (712) and a pressing rod (713), the movable supporting plate (711) is arranged inside the left side of the base (1), extends out of the base (1) at the left end and is slidably connected with the base (1), the supporting leg (712) is fixedly connected to one end of the movable supporting plate (711) extending out of the base (1), and the pressing rod (713) is fixedly connected to the right end lower end surface of the movable supporting plate (711).

7. The teaching apparatus for service training according to claim 6, characterized in that: The linkage assembly (72) comprises a rotating rod (721), a linkage disc (722), arc-shaped extrusion grooves (723) and a linkage torsion groove (724), the lower end of the rotating rod (721) is arranged inside the base (1) and rotationally connected with the base (1), the upper end extends into the support rod (2) and the telescopic rod (3) and movably connected with the support rod (2) and the telescopic rod (3), the linkage disc (722) is arranged at the lower end inside the base (1) and sleeved on the lower end surface of the rotating rod (721) and fixedly connected with the rotating rod (721), the arc-shaped extrusion grooves (723) are four in number and respectively arranged around the linkage disc (722) and correspondingly connected with the four pressing rods (713), the lower ends of the four pressing rods (713) are respectively arranged inside the arc-shaped extrusion grooves (723) and movably connected with the arc-shaped extrusion grooves (723), and the linkage torsion groove (724) is arranged on the left rear surface of the upper end of the rotating rod (721).

8. The teaching apparatus for service training according to claim 7, characterized by: The linkage torsion groove (724) is an upward spiral type.

9. The teaching apparatus for service training according to claim 8, characterized by: The rear surface of the lower end inside the telescopic rod (3) is fixedly connected with a pressing rotating shaft (9), the front end of the pressing rotating shaft (9) is arranged at the lower end inside the linkage torsion groove (724) and movably connected with the linkage torsion groove (724).

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