A stretchable multifunctional podium

Abstract

The present invention relates to a podium, and in particular to a stretchable multifunctional podium. The present invention provides a stretchable multifunctional podium that can automatically adjust the height of the podium and is convenient to use. A stretchable multifunctional podium comprises: a support plate, on the upper part of the base is installed the support plate by bolt connection; a placement table, on the top of the support plate is placed the placement table; a limit frame, inside the placement table is provided with a limit frame; a display, on the left side of the placement table is installed the display, the display is in contact with the limit frame, and the limit frame can limit the display; an adjustment mechanism, inside the support plate is provided with an adjustment mechanism for adjusting the height of the placement table. The motor is used as a driving force to drive the screw to rotate, so that the first sliding rod drives the connecting rod to move upward, and the connecting rod drives the placement table to move upward, so that the placement table can be adjusted to a height suitable for the teacher, which is convenient for the teacher to use.

Description

Technical Field

[0001] The invention relates to a podium, in particular to a stretchable multifunctional podium. Background Art

[0002] In order to facilitate teachers to take and put books, teaching aids, chalk, etc. during teaching, a podium will be equipped in the classroom.

[0003] Patent application CN213308152U, published on June 1, 2021, discloses a stretchable multifunctional podium, including a base. The stretchable multifunctional podium rotates the rotating plate by turning on the servo motor, and the rotating plate is movably connected to the card block through the connecting rod. The card block is movably connected to the guide rail, and the card block is limited by the guide rail so that the connecting rod can only push the card block to move forward and backward, so that the card block leaves the groove and enters the inside of the installation cavity, and then pulls the pull ring to the side away from the podium surface. The pull ring drives the stretch plate to move to the side away from the podium surface through the slide rail until the stretch plate moves to the maximum distance. The servo motor is turned on to drive the rotating plate to rotate through the output shaft, and the rotating plate rotates to drive the connecting rod to move. The movement of the connecting rod drives the card block to move to the opposite side on the guide rail, so that the card block enters the groove. The length of the podium surface can be changed according to the needs of the user. Such a podium is more flexible and convenient to use. Although the above patent can adjust the height of the podium and is suitable for teachers of different heights, the above patent adjusts the height of the podium manually, which is inconvenient to use and complicated to operate.

[0004] In view of the above problems, a stretchable multifunctional podium is provided which can automatically adjust the height of the podium and is easy to use. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned patent that the height of the podium is adjusted manually, which is inconvenient to use and complicated to operate, the technical problem is to provide a stretchable multifunctional podium that can automatically adjust the height of the podium and is easy to use.

[0006] The technical feature of the present invention is: a stretchable multifunctional podium, comprising:

[0007] A support plate is installed on the upper part of the base by bolt connection;

[0008] A placing table, wherein a placing table is placed on the top of the supporting plate;

[0009] Limiting frame: a limiting frame is provided inside the placing table;

[0010] Monitor: A monitor is installed on the left side of the placement table. The monitor is in contact with the limit frame, and the limit frame can limit the monitor;

[0011] Adjustment mechanism: An adjustment mechanism for adjusting the height of the placement table is provided inside the support plate. The adjustment mechanism cooperates with the placement table to be suitable for teachers of different heights;

[0012] A push-out mechanism is provided inside the placement table for storing teaching aids.

[0013] Optionally, the adjustment mechanism comprises:

[0014] A support frame is provided on the upper side of the support plate;

[0015] A motor is installed on the support frame;

[0016] Screw: The motor output shaft is provided with a screw, and the screw is rotatably connected to the support plate;

[0017] A first limiting rod, wherein the first limiting rod is provided on both the left and right sides of the support plate;

[0018] A first sliding rod, a first sliding rod is slidably provided between the lower parts of the two first limiting rods, and the first sliding rod is threadably matched with the screw rod;

[0019] Connecting rods are provided on both sides of the left and right sides of the top of the first sliding rod, and the two connecting rods are connected to the bottom of the placement table.

[0020] Optionally, the push mechanism includes:

[0021] Electric slide rail: an electric slide rail is installed on the right side of the placement table;

[0022] Electric slider, the electric slider is provided in the middle of the electric slide rail;

[0023] A placement plate is provided on the right side of the placement table, the electric slider is connected to the placement plate, the placement plate is in contact with the limit frame, and the limit frame limits the placement plate;

[0024] A first rotating shaft is rotatably provided at the lower front part of the placing table;

[0025] A baffle, the first rotating shaft is provided with a baffle, and the baffle is in contact with the placement table;

[0026] Torsion spring: two torsion springs are arranged between the baffle plate and the placing platform, and the two torsion springs are both wound around the first rotating shaft.

[0027] Optionally, a protection mechanism is also included, and the protection mechanism includes:

[0028] Protective plates: protective plates are provided on both sides of the upper part of the platform in a sliding manner;

[0029] A second rotating shaft is rotatably provided on both the left and right sides of the rear side of the upper part of the placement table;

[0030] Rollers, rollers are arranged on the upper and lower sides of the two second rotating shafts, and the four rollers are in contact with the protective plate on the same side;

[0031] Handles: handles are provided on the outer sides of both protective plates.

[0032] Optionally, a clamping mechanism is also included, and the clamping mechanism includes:

[0033] Guide rods, guide rods are provided on both sides of the left and right sides of the rear side of the top of the two protective plates;

[0034] A clamping rod is slidably provided between the upper parts of the two guide rods on the left side, and a clamping rod is also slidably provided between the upper parts of the two guide rods on the right side;

[0035] A second return spring, two second return springs are arranged between the two clamping rods and the protective plate on the same side, there are four second return springs in total, and the four second return springs are respectively wound around the guide rod on the same side;

[0036] A second limiting rod is slidably provided at the rear of the left and right sides of the placing table;

[0037] A pressing rod, the upper parts of the two second limit rods are each provided with a pressing rod, the two pressing rods are in contact with the clamping rod on the same side, and the two protection plates move outwards to contact with the pressing rod on the same side;

[0038] A first return spring is provided between the two pressing rods and the placing platform.

[0039] Optionally, a cover opening mechanism is also included, and the cover opening mechanism includes:

[0040] A rotating rod, a rotating rod is provided on the right side of the first rotating shaft;

[0041] A material storage frame is provided at the lower right front side of the placement table;

[0042] A cover plate is provided on the upper part of the storage frame in a sliding manner;

[0043] A second sliding rod, a second sliding rod is provided at the rear side of the cover plate, the second sliding rod penetrates the material storage frame, and the second sliding rod is slidably connected to the material storage frame;

[0044] A toggle rod, a toggle rod is provided on the rear side of the second sliding rod, and the toggle rod is in contact with the rotating rod;

[0045] A third return spring is provided between the toggle rod and the material storage frame, and the third return spring is wound around the second sliding rod;

[0046] A clamping rod is provided on the front left side of the cover plate, and the clamping rod is in contact with the toggle rod.

[0047] Optionally, a cleaning mechanism is also included, and the cleaning mechanism includes:

[0048] A third limiting rod is provided on the upper left side of the placement table;

[0049] A sliding block is provided on the rear side of the third limit rod in a sliding manner;

[0050] A fourth return spring is provided between the sliding block and the placing table, and the fourth return spring is wound around the third limiting rod;

[0051] A moving rod is provided on the upper part of the sliding block, and the moving rod is slidably connected to the placing table;

[0052] A cleaning rod is provided at the bottom of the moving rod, and the cleaning rod contacts the display.

[0053] Optionally, a counterweight is provided at the bottom of the base.

[0054] The beneficial effects of adopting the above technical solution are: 1. The motor is used as a driving force to drive the screw to rotate, so that the first sliding rod drives the connecting rod to move upward, and the connecting rod drives the placement table to move upward, so that the placement table can be adjusted to a height suitable for the teacher, which is convenient for the teacher to use;

[0055] 2. Through the cooperation of the electric slide rail and the electric slider, the electric slider drives the placement board to move forward, and then the teacher takes the teaching aids in the placement board, so that the teaching aids can be easily taken and the operation is simple;

[0056] 3. Under normal conditions, the protective plate blocks the display, preventing dust from falling onto the display and protecting the display at the same time;

[0057] 4. The protective plate moves outward to squeeze the lower pressure rod, and the lower pressure rod drives the second limit rod to move downward. The lower pressure rod squeezes the clamping rod, and the clamping rod moves downward. The clamping rod clamps the teaching books placed on the protective plate, so that the teaching books can be automatically clamped to prevent them from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0059] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0060] Figure 3 It is a schematic diagram of the third three-dimensional structure of the present invention.

[0061] Figure 4 It is a partial cross-sectional view of the present invention.

[0062] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0063] Figure 6 It is a three-dimensional structural schematic diagram of the ejection mechanism of the present invention.

[0064] Figure 7 It is a partial three-dimensional structural schematic diagram of the ejection mechanism of the present invention.

[0065] Figure 8 It is a schematic diagram of the first three-dimensional structure of the protection mechanism of the present invention.

[0066] Fig. 9 It is a schematic diagram of the second three-dimensional structure of the protection mechanism of the present invention.

[0067] Fig.10 It is a schematic diagram of the first three-dimensional structure of the clamping mechanism of the present invention.

[0068] Fig.11 It is a schematic diagram of a second three-dimensional structure of the clamping mechanism of the present invention.

[0069] Fig.12 It is a schematic diagram of a first three-dimensional structure of the cover opening mechanism of the present invention.

[0070] Fig.13 It is a schematic diagram of a second three-dimensional structure of the cover opening mechanism of the present invention.

[0071] Fig.14 This is a schematic diagram of the first three-dimensional structure of the cleaning mechanism of the present invention.

[0072] Fig.15 It is a schematic diagram of the second three-dimensional structure of the cleaning mechanism of the present invention.

[0073] Description of the accompanying drawings: 1_base, 2_support plate, 3_placing table, 4_display, 5_limiting frame, 6_adjusting mechanism, 60_support frame, 61_motor, 62_screw, 63_first limiting rod, 64_first sliding rod, 65_connecting rod, 7_ejecting mechanism, 70_electric slide rail, 71_electric slider, 72_placing plate, 73_first rotating shaft, 74_baffle, 75_torsion spring, 8_protective mechanism, 80_protective plate, 81_second rotating shaft, 82_roller, 83_handle, 9 _Clamping mechanism, 90_Clamping rod, 91_Guide rod, 92_Pressure rod, 93_Second limiting rod, 94_First return spring, 95_Second return spring, 10_Opening mechanism, 100_Rotating rod, 101_Storage frame, 102_Second sliding rod, 103_Toggle rod, 104_Third return spring, 105_Cover plate, 106_Card rod, 11_Cleaning mechanism, 110_Third limiting rod, 111_Fourth return spring, 112_Sliding block, 113_Moving rod, 114_Cleaning rod. DETAILED DESCRIPTION

[0074] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0075] Example 1

[0076] A stretchable multifunctional podium, such as Figure 1-Figure 7 As shown, it includes a base 1, a support plate 2, a placement table 3, a display 4, a limit frame 5, an adjustment mechanism 6 and a push-out mechanism 7. A counterweight is provided at the bottom of the base 1, which can make the stretchable multifunctional podium work more stably. The support plate 2 is installed on the upper part of the base 1 by bolt connection, which is easy to install and disassemble. A placement table 3 is placed on the top of the support plate 2, and a limit frame 5 is provided inside the placement table 3. A display 4 is installed on the left side of the placement table 3. The display 4 is in contact with the limit frame 5, and the limit frame 5 can limit the display 4. An adjustment mechanism 6 is provided inside the support plate 2, and the adjustment mechanism 6 cooperates with the placement table 3 to adjust the height of the placement table 3, which is suitable for teachers of different heights. A push-out mechanism 7 is provided inside the placement table 3 for storing teaching aids.

[0077] like Figure 4 and Figure 5 As shown, the adjustment mechanism 6 includes a support frame 60, a motor 61, a screw 62, a first limiting rod 63, a first sliding rod 64 and a connecting rod 65. A support frame 60 is provided on the upper side of the support plate 2, a motor 61 is installed on the support frame 60, a screw 62 is provided on the output shaft of the motor 61, the screw 62 is rotatably connected to the support plate 2, first limiting rods 63 are provided on the left and right sides of the support plate 2, a first sliding rod 64 is slidably provided between the lower parts of the two first limiting rods 63, the first sliding rod 64 is threadedly matched with the screw 62, connecting rods 65 are provided on the left and right sides of the top of the first sliding rod 64, and the two connecting rods 65 are connected to the bottom of the placement table 3.

[0078] like Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, the ejection mechanism 7 includes an electric slide rail 70, an electric slider 71, a placement plate 72, a first rotating shaft 73, a baffle 74 and a torsion spring 75. The electric slide rail 70 is installed on the right side of the placement table 3. The electric slider 71 is slidably provided in the middle of the electric slide rail 70. A placement plate 72 is provided on the right side of the placement table 3 for placing teaching aids. The electric slider 71 is connected to the placement plate 72. The placement plate 72 is in contact with the limiting frame 5. The limiting frame 5 limits the placement plate 72. The first rotating shaft 73 is rotatably provided at the lower front side of the placement table 3. A baffle 74 is provided on the first rotating shaft 73. The baffle 74 is in contact with the placement table 3. Two torsion springs 75 are provided between the baffle 74 and the placement table 3. The two torsion springs 75 are both wound around the first rotating shaft 73.

[0079] When the teacher needs to use the stretchable multifunctional podium, the teacher first moves the podium to the designated location, and uses the counterweight to make the podium more stable for work. After moving and placing it, the teacher starts the motor 61 and controls the output shaft of the motor 61 to rotate forward. The output shaft of the motor 61 drives the screw 62 to rotate. The rotation of the screw 62 causes the first sliding rod 64 to move upward along the first limiting rod 63. The first sliding rod 64 drives the connecting rod 65 to move upward, and the connecting rod 65 drives the placement platform 3 to move upward. The placement platform 3 moves upward until it is out of contact with the support plate 2. After adjusting the placement platform 3 to a height suitable for the teacher, the teacher turns off the motor 6. 1. Then the teacher evenly places the teaching aids on the placement plate 72. The placement plate 72 can store the teaching aids. When the teacher needs to use the teaching aids, the teacher starts the electric slide rail 70 and controls the electric slider 71 to move forward. The electric slider 71 drives the placement plate 72 to move forward. The placement plate 72 moves forward to squeeze the baffle 74, and the baffle 74 drives the first rotating shaft 73 to rotate. The torsion spring 75 is deformed, and the placement plate 72 presses the baffle 74, making it difficult for the baffle 74 to rotate at will. The placement plate 72 moves out to the front side. At this time, the teacher closes the electric slide rail 70, and then the teacher can take the placement plate 72. 2 is used, and then the teacher turns on the display 4, and the teacher controls the display 4 to project the screen, which is convenient for teaching students. After the teaching homework is completed, the teacher starts the electric slide rail 70, controls the electric slider 71 to move backward, and the electric slider 71 drives the placement plate 72 to move backward. The placement plate 72 moves backward and contacts with the limit frame 5. The limit frame 5 limits the placement plate 72. After the placement plate 72 is retracted, the placement plate 72 no longer presses the baffle 74. Under the reset action of the torsion spring 75, the baffle 74 rotates in the opposite direction to reset, and the baffle 74 blocks the placement table 3 to prevent the placement plate 72 from moving at will. , and then the teacher turns off the electric slide rail 70, and then the teacher starts the motor 61, controls the output shaft of the motor 61 to reverse, and the output shaft of the motor 61 drives the screw 62 to reverse, so that the first sliding rod 64 moves downward along the first limiting rod 63, and the first sliding rod 64 drives the connecting rod 65 to move downward and reset, and the connecting rod 65 drives the placement table 3 to move downward and contact the support plate 2. After the placement table 3 moves downward and resets, the teacher turns off the motor 61, and then turns off the display 4. Finally, the height of the podium can be adjusted, which is suitable for teachers of different heights. At the same time, teaching aids can be stored for easy access.

[0080] Example 2

[0081] On the basis of Example 1, Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9As shown, a protective mechanism 8 is also included, and the protective mechanism 8 includes a protective plate 80, a second rotating shaft 81, a roller 82 and a handle 83. Protective plates 80 are slidably provided on both sides of the upper part of the placement table 3, which are used to cover the display 4 and the placement plate 72 to prevent dust from falling onto the display 4. Second rotating shafts 81 are rotatably provided on both sides of the upper rear side of the placement table 3. Rollers 82 are provided on the upper and lower sides of the two second rotating shafts 81. The four rollers 82 are in contact with the protective plate 80 on the same side. Handles 83 are provided on the outer sides of the two protective plates 80. Anti-slip gloves are provided on the outer sides of the two handles 83. When the teacher applies work on the handles 83, the anti-slip gloves can play an anti-slip role.

[0082] In a normal state, the protective plate 80 blocks the display 4 and the placement plate 72 to prevent dust from falling onto the display 4. When the teacher needs to use the podium, the teacher pulls the handle 83 to drive the protective plate 80 to move outward along the placement table 3. During the movement of the protective plate 80 outward, it contacts the roller 82 and drives the roller 82 to rotate. The roller 82 drives the second rotating shaft 81 to rotate. The rotation of the roller 82 can assist the protective plate 80 to move outward. The protective plate 80 moves outward until it no longer blocks the display 4. At this time, the teacher can use the display 4 and the teaching aids at the same time. When the display 4 and teaching aids need to be used, the teacher first turns off the display 4, and then pushes the handle 83 to drive the protective plate 80 to move inward. During the movement of the protective plate 80 inward, the roller 82 is driven to reverse, and the roller 82 drives the second rotating shaft 81 to reverse. The reversal of the roller 82 can assist the protective plate 80 to move inward, and the protective plates 80 on both sides are close to each other. At this time, the protective plate 80 can block the display 4 to prevent dust from falling onto the display 4. Finally, the display 4 can be blocked, thereby protecting the display 4 and preventing dust from falling onto the display 4.

[0083] like Figure 1 , Figure 2 , Figure 3 Fig.10 and Fig.11As shown, the clamping mechanism 9 also includes a clamping rod 90, a guide rod 91, a pressing rod 92, a second limiting rod 93, a first return spring 94 and a second return spring 95. The left and right sides of the rear side of the top of the two protective plates 80 are provided with guide rods 91. The clamping rod 90 is slidably provided between the upper parts of the two guide rods 91 on the left side, and the clamping rod 90 is also slidably provided between the upper parts of the two guide rods 91 on the right side, which is used to clamp the teaching books. The two clamping rods 90 are connected to the protective plate 8 on the same side. 0, there are two second return springs 95 between them, there are four second return springs 95, the four second return springs 95 are respectively wound around the guide rods 91 on the same side, and the rear parts of the left and right sides of the placing table 3 are slidably provided with second limit rods 93, and the upper parts of the two second limit rods 93 are provided with downward pressure rods 92, the two downward pressure rods 92 are in contact with the clamping rods 90 on the same side, and the two protective plates 80 move outwards and contact with the downward pressure rods 92 on the same side, and a first return spring 94 is provided between the two downward pressure rods 92 and the placing table 3.

[0084] When the teacher needs to place teaching books, the teacher can place the books on top of the protective plate 80, and the teacher pulls the handle 83 to drive the protective plate 80 to move outward, and the protective plate 80 drives the guide rod 91 to move outward, and the guide rod 91 drives the clamping rod 90 to move outward, and the protective plate 80 moves outward to squeeze the lower pressure rod 92, and the lower pressure rod 92 drives the second limiting rod 93 to move downward, the first return spring 94 is compressed, the lower pressure rod 92 moves downward to squeeze the clamping rod 90, and the clamping rod 90 moves downward along the guide rod 91, the second return spring 95 is compressed, and the clamping rod 90 moves downward to contact the teaching book, so that the clamping rod 90 can clamp the teaching book. After the teaching and explanation is completed, the teacher pushes the handle 83 to drive the protective plate 80 to move inward. The protective plate 80 moves inward and no longer squeezes the lower pressure rod 92. Under the reset action of the first return spring 94, the lower pressure rod 92 drives the second limit rod 93 to move upward, and the lower pressure rod 92 no longer squeezes the clamping rod 90. Under the reset action of the second return spring 95, the clamping rod 90 moves upward along the guide rod 91 and resets. The clamping rod 90 no longer clamps the teaching books, and the teacher takes out the teaching books. Finally, the teaching books can be stored and automatically clamped to prevent the teaching books from falling.

[0085] like Figure 1 , Figure 2 , Figure 3 , Fig.12 and Fig.13As shown, the cover opening mechanism 10 is also included, and the cover opening mechanism 10 includes a rotating rod 100, a material storage frame 101, a second sliding rod 102, a toggle rod 103, a third return spring 104, a cover plate 105 and a clamping rod 106. The rotating rod 100 is provided on the right side of the first rotating shaft 73, and the material storage frame 101 is provided at the lower right front side of the placing table 3 for placing chalk. The cover plate 105 is slidably provided on the upper part of the material storage frame 101, and the second sliding rod 102 is provided on the rear side of the cover plate 105 The second sliding rod 102 passes through the storage frame 101, and the second sliding rod 102 is slidably connected to the storage frame 101. The second sliding rod 102 is provided with a toggle rod 103 on the rear side, and the toggle rod 103 contacts the rotating rod 100. A third return spring 104 is provided between the toggle rod 103 and the storage frame 101, and the third return spring 104 is wound around the second sliding rod 102. A clamping rod 106 is provided on the front left side of the cover plate 105, and the clamping rod 106 contacts the toggle rod 103.

[0086] The first rotating shaft 73 rotates to drive the rotating rod 100 to rotate. During the rotation of the rotating rod 100, the toggle rod 103 is driven to move forward. The toggle rod 103 drives the second sliding rod 102 to move forward. The third return spring 104 is compressed, and the second sliding rod 102 drives the cover plate 105 to move forward along the storage frame 101. At the same time, the toggle rod 103 moves forward to drive the clamping rod 106 to move forward, thereby assisting the cover plate 105 to move forward. At this time, the cover plate 105 does not block the storage frame 101, and the teacher can take the chalk in the storage frame 101 for use. When the rotating rod 100 is driven to rotate in the opposite direction, the rotating rod 100 rotates until it no longer presses the toggle rod 103. Under the reset action of the third return spring 104, the toggle rod 103 moves backward and resets. The toggle rod 103 no longer presses the clamping rod 106. At the same time, the toggle rod 103 drives the second sliding rod 102 to move backward and reset. The second sliding rod 102 drives the cover plate 105 to move backward and reset. The cover plate 105 blocks the storage frame 101, thereby effectively preventing the chalk from being affected by moisture. Finally, the chalk can be stored, which is convenient for teachers to take the chalk and convenient for teaching.

[0087] like Figure 3 , Fig.14 and Fig.15As shown, a cleaning mechanism 11 is also included, and the cleaning mechanism 11 includes a third limiting rod 110, a fourth return spring 111, a sliding block 112, a moving rod 113 and a cleaning rod 114. A third limiting rod 110 is provided on the upper left side of the placement table 3, and a sliding block 112 is slidably provided on the rear side of the third limiting rod 110. A fourth return spring 111 is provided between the sliding block 112 and the placement table 3, and the fourth return spring 111 is wound around the third limiting rod 110. A moving rod 113 is provided on the upper part of the sliding block 112, and the moving rod 113 is slidably connected to the placement table 3. A cleaning rod 114 is provided at the bottom of the moving rod 113, and the cleaning rod 114 contacts the display 4. The cleaning rod 114 is made of sponge, so that when the cleaning rod 114 contacts the display 4, the cleaning rod 114 can cause no damage to the display 4.

[0088] After the display 4 has been used for a long time, dust is easily adhered to the surface of the display 4. At this time, the teacher pulls the moving rod 113 to drive the sliding block 112 to move forward along the third limit rod 110, the fourth return spring 111 is compressed, and the moving rod 113 drives the cleaning rod 114 to move forward along the display 4, and the cleaning rod 114 wipes the display 4, thereby cleaning the dust on the display 4 to prevent the dust from blocking the text displayed on the display 4. Then the teacher no longer applies force to the moving rod 113, and under the resetting action of the fourth return spring 111, the sliding block 112 moves backward along the third limit rod 110 to reset, the sliding block 112 drives the moving rod 113 to move backward to reset, and the moving rod 113 drives the cleaning rod 114 to move backward. At this time, the cleaning rod 114 contacts the display 4 evenly again, wiping the display 4 more cleanly, and finally the dust on the surface of the display 4 can be wiped to prevent the dust from blocking the text on the display 4, which is convenient for the teacher to watch.

[0089] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stretchable multifunctional podium, characterized in that: include: A support plate (2), the support plate (2) being mounted on the upper part of the base (1) by means of bolt connection; A placement table (3), wherein a placement table (3) is placed on the top of the support plate (2); A limiting frame (5), wherein the placing platform (3) is provided with a limiting frame (5); A display (4), wherein the display (4) is installed on the left side of the placement table (3), the display (4) is in contact with a limiting frame (5), and the limiting frame (5) can limit the display (4); An adjustment mechanism (6), wherein the support plate (2) is provided with an adjustment mechanism (6) for adjusting the height of the placement table (3), and the adjustment mechanism (6) cooperates with the placement table (3) to be suitable for teachers of different heights; A push-out mechanism (7), wherein the placement table (3) is provided with a push-out mechanism (7) for storing teaching aids; The regulating mechanism (6) comprises: A support frame (60), wherein the support frame (60) is provided on the upper inner side of the support plate (2); A motor (61), wherein the support frame (60) is provided with the motor (61); A screw rod (62), the output shaft of the motor (61) is provided with a screw rod (62), and the screw rod (62) is rotatably connected to the support plate (2); A first limiting rod (63), wherein the first limiting rod (63) is provided on both left and right sides of the interior of the support plate (2); A first sliding rod (64), a first sliding rod (64) is slidably provided between the lower parts of the two first limiting rods (63), and the first sliding rod (64) is threadably matched with the screw rod (62); Connecting rods (65), connecting rods (65) are provided on both left and right sides of the top of the first sliding rod (64), and both connecting rods (65) are connected to the bottom of the placement platform (3); The push-out mechanism (7) includes: An electric slide rail (70), wherein the electric slide rail (70) is installed on the right side inside the placement table (3); An electric slider (71), wherein the electric slider (71) is slidably disposed in the middle of the electric slide rail (70); A placement plate (72), wherein the placement plate (72) is provided on the right side of the placement platform (3), the electric slider (71) is connected to the placement plate (72), the placement plate (72) is in contact with the limiting frame (5), and the limiting frame (5) limits the placement plate (72); A first rotating shaft (73), the first rotating shaft (73) being rotatably provided at the lower front portion of the placement table (3); A baffle (74), wherein the first rotating shaft (73) is provided with a baffle (74), and the baffle (74) is in contact with the placement table (3); Torsion spring (75), two torsion springs (75) are provided between the baffle (74) and the placement table (3), and the two torsion springs (75) are both wound around the first rotating shaft (73); The device further comprises a protection mechanism (8), wherein the protection mechanism (8) comprises: A protective plate (80) is slidably provided on both left and right sides of the upper portion of the placement table (3); A second rotating shaft (81), the second rotating shaft (81) being rotatably provided on both left and right sides of the upper rear side surface of the placement table (3); Rollers (82), rollers (82) are provided on both upper and lower sides of the two second rotating shafts (81), and the four rollers (82) are in contact with the protection plate (80) on the same side; A handle (83), each of the two protective plates (80) being provided with a handle (83); It also includes a clamping mechanism (9), which includes: Guide rods (91), the guide rods (91) being provided on both left and right sides of the rear sides of the tops of the two protection plates (80); A clamping rod (90) is slidably provided between the upper portions of the two guide rods (91) on the left side, and a clamping rod (90) is also slidably provided between the upper portions of the two guide rods (91) on the right side; A second return spring (95), two second return springs (95) are provided between the two clamping rods (90) and the protection plate (80) on the same side, there are four second return springs (95) in total, and the four second return springs (95) are respectively wound around the guide rod (91) on the same side; A second limiting rod (93), wherein the rear portions of the left and right sides of the placement table (3) are both slidably provided with a second limiting rod (93); A lower pressing rod (92), the upper parts of the two second limiting rods (93) are each provided with a lower pressing rod (92), the two lower pressing rods (92) are in contact with the clamping rod (90) on the same side, and the two protection plates (80) move outwards to contact with the lower pressing rod (92) on the same side; A first return spring (94) is provided between the two lower pressing rods (92) and the placement platform (3).

2. A stretchable multifunctional podium according to claim 1, characterized in that: The invention also includes a cover opening mechanism (10), wherein the cover opening mechanism (10) includes: A rotating rod (100), wherein the rotating rod (100) is provided on the right side of the first rotating shaft (73); A material storage frame (101), a material storage frame (101) is provided at the lower right front side of the placement table (3); A cover plate (105) is slidably provided on the upper part of the storage frame (101); A second sliding rod (102), the second sliding rod (102) is provided on the rear side of the cover plate (105), the second sliding rod (102) penetrates the material storage frame (101), and the second sliding rod (102) is slidably connected to the material storage frame (101); A toggle rod (103), the second sliding rod (102) and the rear side are provided with a toggle rod (103), and the toggle rod (103) is in contact with the rotating rod (100); A third return spring (104), a third return spring (104) is provided between the toggle rod (103) and the material storage frame (101), and the third return spring (104) is wound around the second sliding rod (102); A clamping rod (106) is provided on the front left side of the cover plate (105), and the clamping rod (106) is in contact with the toggle rod (103).

3. A stretchable multifunctional podium according to claim 2, characterized in that: The device further comprises a cleaning mechanism (11), wherein the cleaning mechanism (11) comprises: A third limiting rod (110), wherein the third limiting rod (110) is provided on the upper left side of the placement platform (3); A sliding block (112), a sliding block (112) is slidably provided on the rear side of the third limiting rod (110); A fourth return spring (111), wherein a fourth return spring (111) is provided between the sliding block (112) and the placement table (3), and the fourth return spring (111) is wound around the third limiting rod (110); A moving rod (113), the upper part of the sliding block (112) is provided with a moving rod (113), and the moving rod (113) is slidably connected to the placement table (3); A cleaning rod (114) is provided at the bottom of the moving rod (113), and the cleaning rod (114) is in contact with the display (4).

4. The stretchable multifunctional podium according to claim 1, characterized in that: A counterweight block is provided at the bottom of the base (1).

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