Education demonstration board convenient to use

Abstract

The utility model discloses an education demonstration board convenient to use, which comprises two supporting columns which are matched with each other for use, the upper and lower end parts of the inner side end surfaces of the two supporting columns are respectively and symmetrically provided with sliding chutes with T-shaped structures along the height direction, and the bottom surfaces of the two sliding chutes are provided with guide grooves which are communicated with the sliding chutes and are inclined forwards, and the guide grooves are provided with T-shaped structures. Rolling wheels matched with the two sliding grooves are arranged in the two sliding grooves respectively, rotating shafts penetrate through the opposite end faces of the four rolling wheels respectively, mounting bases are fixedly arranged on the opposite end faces of the four rotating shafts respectively, a movable plate is fixedly arranged on the front side end faces of the four mounting bases jointly, and a positioning base is fixedly arranged on the end face, close to the lower mounting base, of the movable plate; and a fixing device for limiting the positioning seat is also arranged on the supporting column. According to the device, the movable plate can be conveniently and rapidly positioned and adjusted, the attractiveness in the using process after adjustment can be guaranteed, and therefore the using efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of use of educational teaching boards, in particular to an educational teaching board that is convenient to use. Background Art

[0002] In educational work, it is usually necessary to use teaching boards to assist in displaying the content of the lecture so that people can better accept and learn it.

[0003] Patent authorization announcement number: CN219738342U discloses a music education teaching board, including a support column, a connecting plate is arranged on the top of the support column, a display screen is arranged between the two support columns, and a limit block is arranged at the bottom of the support column located at the display screen. A slide groove is opened on the side wall of one of the support columns, a slider is arranged in the slide groove, a first screw is arranged on the slider, the first screw rod passes through the slider and the slide groove and is connected to a connecting block, and is connected to a movable plate through the connecting block, and electronic piano keys are arranged on the movable plate.

[0004] Although the above utility model can technically achieve the purpose of teaching, during use, the display screen and the electronic piano keys on the movable plate are in a front-to-back staggered state, and the two are not in the same plane, which affects the aesthetics of the device during use; and when positioning the movable plate, it is done through the cooperation of the second screw and the internal thread, and the operation process is cumbersome, which reduces the practicality of the device. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects and provide an educational teaching board that is convenient to use.

[0006] In order to solve the above problems, the technical solution of the utility model is: an educational teaching board that is easy to use, comprising two supporting columns used in conjunction with each other, a connecting seat being provided on the top surfaces of the two supporting columns, and a display screen being provided between the two supporting columns below the connecting seat;

[0007] The upper and lower ends of the inner end surfaces of the two support columns are respectively provided with T-shaped slide grooves symmetrically along their height direction, and the bottom surfaces of the two slide grooves are also provided with forward-inclined T-shaped guide grooves intersecting with them. The two slide grooves are respectively provided with rolling wheels adapted thereto, and rotating shafts are respectively passed through the opposite end surfaces of the four rolling wheels and extend to the outside of the slide grooves. Mounting seats are respectively fixed on the opposite end surfaces of the four rotating shafts, and a movable plate is commonly fixed on the front end surfaces of the four mounting seats. A positioning seat is fixed on the end surface of the movable plate close to the lower mounting seat, and a fixing device for limiting the positioning seat is also provided on the support column.

[0008] Furthermore, the fixing device includes a positioning pin, a pressure plate and a return spring. A cavity is opened in the support column corresponding to the end face of the positioning seat, and a positioning pin that can move left and right is passed through the cavity. A pressure plate is fixed on the positioning pin close to the bottom wall of the cavity, and a return spring is wound between the pressure plate and the bottom wall of the cavity. A pin hole matching the positioning pin is opened on the end face of the positioning seat.

[0009] Furthermore, a connecting tube is sleeved on the outer surface of the support column corresponding to the positioning pin, and an adjustment groove 1 is symmetrically opened at the left and right ends of the connecting tube along its axial direction, and an adjustment groove 2 is symmetrically opened on the front and rear ends. The depth of the adjustment groove 2 is smaller than the depth of the adjustment groove 1, and an abutment rod matched with the positioning pin end face corresponding to the adjustment groove 1 is also provided.

[0010] Furthermore, a handle is fixedly provided on the outer end surface of the positioning pin.

[0011] Furthermore, electronic piano keys are arranged on the front end of the movable plate.

[0012] The advantages of the utility model compared with the existing technology are:

[0013] 1. Through the cooperation of the T-shaped slide groove and the guide groove, and the cooperation of the rolling wheel, the rotating shaft, the mounting seat and the movable plate, the movable plate can be driven to slide forward by the forward-inclined guide groove during the downward sliding process, so that the movable plate and the display screen are located in the same plane, thereby improving the aesthetics of the device during use;

[0014] 2. Under the action of the positioning pin, pressure plate and return spring and the cooperation of the positioning seat and the pin hole, the movable plate can be conveniently and quickly positioned after being moved upward under the cooperation of the positioning pin and the pin hole, thereby improving the convenience of operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front structural diagram of the utility model.

[0016] Figure 2 It is a side structural diagram of the utility model.

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 It is a rear view structural diagram of the utility model.

[0019] Figure 5 This utility model Figure 4 Enlarged view of point B in the middle.

[0020] As shown in the figure: 1. Support column; 2. Connecting seat; 3. Display screen; 4. Slide groove; 5. Guide groove; 6. Rolling wheel; 7. Rotating shaft; 8. Mounting seat; 9. Movable plate; 10. Positioning seat; 11. Cavity; 12. Positioning pin; 13. Pressure plate; 14. Reset spring; 15. Connecting tube; 16. Abutment rod; 17. Adjustment groove one; 18. Adjustment groove two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 5 As shown, a convenient-to-use educational teaching board comprises two supporting columns 1 used in cooperation with each other, a connecting seat 2 is commonly provided on the top surfaces of the two supporting columns 1, a display screen 3 is provided between the two supporting columns 1 below the connecting seat 2, the upper and lower ends of the inner side end surfaces of the two supporting columns 1 are symmetrically provided with T-shaped slide grooves 4 along their height direction, and guide grooves 5 of a T-shaped structure that are intersecting and tilted forward are also provided on the bottom surfaces of the two slide grooves 4, rolling wheels 6 that are adapted thereto are respectively provided in the two slide grooves 4, rotating shafts 7 are respectively passed through the opposite end surfaces of the four rolling wheels 6 and extend to the outside of the slide grooves 4, mounting seats 8 are respectively fixedly provided on the opposite end surfaces of the four rotating shafts 7, and movable plates 9 are commonly fixedly provided on the front side end surfaces of the four mounting seats 8, under the action of the T-shaped slide grooves 4 and the guide grooves 5 And with the cooperation of the rolling wheel 6, the rotating shaft 7 and the mounting seat 8, the movable plate 9 can be located behind the display screen 3 when it moves upward under the action of external force, and when it moves downward, the movable plate 9 and the display screen 3 are located in the same plane, thereby improving the aesthetics of the device during use. When the movable plate 9 moves to the lowest position, support seats that abut against the movable plate 9 are fixedly provided on the inner end faces of the two support columns 2, and electronic piano keys are provided on the front end of the movable plate 9. A positioning seat 10 is fixedly provided on the end face of the movable plate 9 close to the lower mounting seat 8, and a fixing device for limiting the positioning seat 10 is also provided on the support column 1. When the movable plate 9 moves to the highest position, the positioning seat 10 is limited by the fixing device, and the movable plate 9 is limited at the same time.

[0023] The fixing device includes a positioning pin 12, a pressure plate 13 and a return spring 14. A cavity 11 is opened in the support column 1 corresponding to the end face of the positioning seat 10, and a positioning pin 12 that can move left and right is passed through the cavity 11. A pressure plate 13 is fixed on the positioning pin 12 close to the bottom wall of the cavity 11, and a return spring 14 is wound between the pressure plate 13 and the bottom wall of the cavity 11. A pin hole matching the positioning pin 12 is opened on the end face of the positioning seat 10.

[0024] A connecting tube 15 is sleeved on the outer surface of the support column 1 corresponding to the positioning pin 12, and an adjustment groove 17 is symmetrically opened at the left and right ends of the connecting tube 15 along its axial direction, and an adjustment groove 2 18 is symmetrically opened at the front and rear ends. The depth of the adjustment groove 2 18 is less than the depth of the adjustment groove 17. An abutment rod 16 adapted to the positioning pin 12 corresponding to the adjustment groove 17 is also provided on the end surface of the positioning pin 12 corresponding to the adjustment groove 17. When the abutment rod 16 is located on the bottom wall of the adjustment groove 17, the positioning pin 12 and the pin hole are matched to adjust the positioning seat 10. For fixed adjustment, pull the positioning pin 12 outward to move the abutment rod 16 to the outside of the connecting tube 15, and rotate the positioning pin 12 at the same time to make the abutment rod 16 and the adjusting groove 18 overlap, and then release the external force. Under the action of the reset spring 14, the abutment rod 16 falls into the bottom wall of the adjusting groove 18. Since the depth of the adjusting groove 18 is less than the depth of the adjusting groove 17, the positioning pin 12 and the pin hole can always be in a separated state, and the positioning operation of the positioning seat 10 is released. A handle is also fixed on the outer end face of the positioning pin 12.

[0025] In specific use, when the movable plate 9 is moved downward for adjustment, the user supports the bottom end of the movable plate 9 with one hand and pulls the handle outward with the other hand to drive the positioning pin 12 to move outward under the action of external force, so that the positioning pin 12 and the pin hole are separated, and the positioning of the positioning seat 10 is released. At the same time, the positioning pin 12 is rotated to make the abutment rod 16 and the adjustment groove 18 coincide with each other, and then the external force is released. Under the action of the reset spring 14, the abutment rod 16 falls into the bottom wall of the adjustment groove 18. Since the depth of the adjustment groove 18 is less than the depth of the adjustment groove 17, the positioning pin 12 and the pin hole can always be in a separated state, and then the movable plate 9 is moved downward. By slowly sliding downward and adjusting, under the action of the T-shaped slide groove 4 and the guide groove 5 and the cooperation of the rolling wheel 6, the rotating shaft 7 and the mounting seat 8, the movable plate 9 can slide downward and pass through the forward inclined guide groove 5, so that the movable plate 9 is moved forward, so that the movable plate 9 and the display screen 3 are in the same plane, which increases the aesthetics of the device during use. After use, the movable plate 9 is pushed upward under the action of external force to move it to the position behind the display screen 3, and then the positioning seat 10 is positioned with the cooperation of the positioning pin 12 and the pin hole, and the movable plate 9 is positioned and adjusted, thereby increasing the practicality of the device.

[0026] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An educational teaching board that is convenient to use, comprising two supporting columns (1) used in conjunction with each other, a connecting seat (2) being provided on the top surfaces of the two supporting columns (1), and a display screen (3) being provided between the two supporting columns (1) below the connecting seat (2), characterized in that: The upper and lower ends of the inner side end surfaces of the two support columns (1) are symmetrically provided with T-shaped slide grooves (4) along the height direction thereof, and the bottom surfaces of the two slide grooves (4) are provided with forward-inclined T-shaped guide grooves (5) intersecting therewith, and the two slide grooves (4) are provided with rolling wheels (6) adapted thereto, respectively, and rotating shafts (7) are respectively passed through the opposite end surfaces of the four rolling wheels (6) and extend to the outside of the slide grooves (4), and mounting seats (8) are respectively fixedly provided on the opposite end surfaces of the four rotating shafts (7), and a movable plate (9) is commonly fixedly provided on the front side end surfaces of the four mounting seats (8), and a positioning seat (10) is fixedly provided on the end surface of the movable plate (9) close to the lower mounting seat (8), and a fixing device for limiting the positioning seat (10) is also provided on the support column (1).

2. The convenient-to-use educational teaching board according to claim 1, characterized in that: The fixing device comprises a positioning pin (12), a pressure plate (13) and a return spring (14); a cavity (11) is provided in the support column (1) corresponding to the end surface of the positioning seat (10); a positioning pin (12) movable leftward and rightward is passed through the cavity (11); a pressure plate (13) is fixed on the positioning pin (12) near the bottom wall of the cavity (11); a return spring (14) is wound between the pressure plate (13) and the bottom wall of the cavity (11); and a pin hole matching the positioning pin (12) is provided on the end surface of the positioning seat (10).

3. The easy-to-use educational teaching board according to claim 2, characterized in that: A connecting tube (15) is sleeved on the outer side surface of the support column (1) corresponding to the positioning pin (12); the left and right ends of the connecting tube (15) are symmetrically provided with adjustment grooves (17) along the axial direction thereof, and the front and rear ends are symmetrically provided with adjustment grooves (18); the depth of the adjustment grooves (18) is smaller than the depth of the adjustment grooves (17); and a contact rod (16) matched with the adjustment grooves (17) is also provided on the end surface of the positioning pin (12) corresponding to the adjustment grooves (17).

4. The easy-to-use educational teaching board according to claim 3, characterized in that: A handle is also fixedly provided on the outer end surface of the positioning pin (12).

5. The easy-to-use educational teaching board according to claim 1, characterized in that: Electronic piano keys are arranged on the front end of the movable plate (9).

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