Adjustable drawing board for teaching

Abstract

The utility model relates to the technical field of teaching, and discloses an adjustable drawing board for teaching, which comprises a supporting plate, a supporting cylinder is rotatably arranged at the top end of the supporting plate, a threaded rod is rotatably arranged at the bottom end in the supporting cylinder, a moving cylinder is slidably arranged in the supporting cylinder, the moving cylinder is hollow, and the threaded rod is rotatably arranged at the bottom end in the supporting cylinder. The threaded rod penetrates through the bottom end of the moving cylinder and is in threaded connection with the moving cylinder, a driving mechanism for driving the threaded rod to rotate is arranged on one side of the threaded rod, a notch corresponding to the moving cylinder is formed in the top end of the supporting cylinder, and a drawing frame is arranged at the top end of the moving cylinder. The movable cylinder can be driven to do linear motion in the supporting cylinder through the arranged threaded rod and the driving mechanism, so that the drawing frame is driven to move, the height of the drawing frame is conveniently adjusted according to the height of a teacher, the arranged limiting mechanism can drive the drawing frame to rotate by a certain angle, and students at different positions can conveniently watch the drawing board.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching, in particular to an adjustable drawing board for teaching. Background Art

[0002] A drawing board is a tool used for painting creation, and is mainly suitable for teaching fields, including art painting, spelling of English words, mathematics drawing, etc.

[0003] After searching, the university mathematics teaching drawing board disclosed in the application number CN201821995457.0 includes a frame, a whiteboard is arranged inside the frame, a fixed block is arranged on one side of the frame, a pull plate is arranged on one side of the frame, a connecting plate is arranged at the bottom of the frame, and a limiting mechanism is arranged on one side of the front of the connecting plate, an ash storage plate is arranged on the top of the limiting mechanism, and a telescopic rod is arranged on one side of the bottom of the limiting mechanism, a hollow rod is arranged at the bottom end of the telescopic rod, and a threaded rod is arranged at the bottom of the back of the hollow rod. The university mathematics teaching drawing board, through the mutual cooperation between the fixed block and the pull plate, is convenient for better increasing the drawing area of ​​the drawing board, so that the teacher will not erase the previous part of the teaching process too early, thereby solving the problem of erasing the previous part too early due to the area of ​​the drawing board during the teaching process, which leads to some students not keeping up with the learning progress and improves the students' learning efficiency.

[0004] However, the above method still has the following defects in actual use: the set adjustment mechanism is not convenient for adjusting the frame, and the frame cannot be rotated at an angle, which is not convenient for students on both sides of the classroom to watch the drawing board. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an adjustable teaching drawing board, which has the advantages of adjustable height and angle, and solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: an adjustable teaching drawing board, comprising a support plate, a support tube rotatably provided at the top end of the support plate, a threaded rod rotatably provided at the bottom end of the support tube, a moving tube slidably provided inside the support tube, and the interior of the moving tube is hollow, the threaded rod penetrates the bottom end of the moving tube and is threadedly connected thereto, a driving mechanism for driving the threaded rod to rotate is provided on one side of the threaded rod, a notch corresponding to the moving tube is provided at the top end of the support tube, a drawing frame is provided at the top end of the moving tube, and a limiting mechanism for fixing the rotated drawing frame is provided on the outer side of the support tube.

[0007] As a preferred technical solution of the utility model, a support column is provided at the bottom end of the support plate, and a universal wheel is provided at the bottom end of the support column.

[0008] As a preferred technical solution of the utility model, the driving mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is arranged at the bottom of the threaded rod, the second bevel gear is arranged vertically to the first bevel gear and is meshingly connected, a connecting rod is provided on one side of the second bevel gear, the connecting rod passes through the side wall of the support tube and is rotatably connected thereto, and a connecting plate is connected to one end of the connecting rod away from the second bevel gear, and a turning handle is rotatably provided at the bottom end of one side of the connecting plate.

[0009] As a preferred technical solution of the utility model, the inner wall of the drawing frame is provided with a drawing board 1, the upper and lower side walls of the drawing frame are respectively provided with a slide groove 1 and a slide groove 2, there are two slide grooves 1 and 2 and they correspond to each other, and the left and right side walls of the drawing frame are provided with card slots, there are four card slots.

[0010] As a preferred technical solution of the utility model, drawing board two and drawing board three are provided inside the drawing frame, and sliders are provided on the upper and lower sides of drawing board two and drawing board three. The slider of drawing board two slides in slide groove one, and the slider of drawing board three slides in slide groove two. The two sides of drawing board two and drawing board three are respectively engaged and connected with the corresponding card slots.

[0011] As a preferred technical solution of the utility model, a handle is provided on one side of the drawing board 2 and the drawing board 3, and a placement groove is provided on one side of the drawing frame.

[0012] As a preferred technical solution of the utility model, the limiting mechanism includes a limiting plate and a rotating shaft. The limiting plate is arranged on the outside of the supporting tube. A plurality of limiting holes are opened on the surface of the limiting plate. A vertical plate is provided at the top of the supporting plate. There are two vertical plates. The rotating shaft is rotatably arranged between the two vertical plates.

[0013] As a preferred technical solution of the utility model, a pedal is provided on one side of the rotating shaft, a compression spring is provided at the bottom end of the pedal, and the other end of the compression spring is connected to the top end of the support plate, a limit rod is provided on one side of the rotating shaft, and one end of the limit rod corresponds to the limit hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The adjustable teaching drawing board can drive the moving cylinder to make linear motion in the supporting cylinder through the arranged threaded rod and driving mechanism, thereby driving the movement of the drawing frame, so that the height of the drawing frame can be adjusted according to the height of the teacher. The arranged drawing frame can be rotated to a certain angle, so that students in different positions can watch the drawing board conveniently. The arranged limiting mechanism can fix the rotated drawing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is one of the three-dimensional structural schematic diagrams of the utility model;

[0017] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A is an enlarged structural diagram;

[0019] Figure 4 This is a schematic diagram of the third structure of the drawing board of the utility model;

[0020] Figure 5 This is a schematic diagram of the internal explosion structure of the support tube of the utility model;

[0021] Figure 6 For this utility model Figure 5 The enlarged structural diagram at B in FIG.

[0022] In the figure: 1. support plate; 101. support column; 102. universal wheel; 2. support cylinder; 3. threaded rod; 4. notch; 5. moving cylinder; 6. driving mechanism; 601. first bevel gear; 602. second bevel gear; 603. connecting rod; 604. connecting plate; 605. turning handle; 7. drawing frame; 701. drawing board one; 702. drawing board two; 703. drawing board three; 704. slide groove one; 705. slide groove two; 706. slot; 707. slider; 708. handle; 709. placement slot; 8. limiting mechanism; 801. limiting plate; 802. limiting hole; 803. vertical plate; 804. rotating shaft; 805. compression spring; 806. pedal; 807. limiting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-6, an adjustable teaching drawing board, comprising a support plate 1, a support cylinder 2 is rotatably provided at the top of the support plate 1, a threaded rod 3 is rotatably provided at the bottom end of the support cylinder 2, a moving cylinder 5 is slidably provided inside the support cylinder 2, and the inside of the moving cylinder 5 is hollow, the threaded rod 3 passes through the bottom end of the moving cylinder 5 and is threadedly connected thereto, a driving mechanism 6 for driving the moving cylinder 5 to rotate is provided on one side of the threaded rod 3, a notch 4 corresponding to the moving cylinder 5 is provided at the top of the support cylinder 2, a drawing frame 7 is provided at the top of the moving cylinder 5, and a limiting mechanism 8 for fixing the rotating drawing frame 7 is provided on the outer side of the support cylinder 2;

[0026] A support column 101 is provided at the bottom end of the support plate 1. Four support columns 101 are provided, which are respectively located at the four corners of the bottom end of the support plate 1 to enhance the stability of the support plate 1. A universal wheel 102 is provided at the bottom end of the support column 101 to facilitate its movement.

[0027] The driving mechanism 6 includes a first bevel gear 601 and a second bevel gear 602. The first bevel gear 601 is arranged at the bottom of the threaded rod 3, and the second bevel gear 602 is vertically arranged and meshed with the first bevel gear 601. A connecting rod 603 is provided on one side of the second bevel gear 602. The connecting rod 603 penetrates the side wall of the supporting cylinder 2 and is rotatably connected thereto, and an end of the connecting rod 603 away from the second bevel gear 602 is connected to a connecting plate 604. A turning handle 605 is rotatably provided at the bottom end of one side of the connecting plate 604. The turning handle 605 is turned, and the rotation of the turning handle 605 drives the rotation of the connecting rod 603, thereby driving the rotation of the second bevel gear 602. Since the first bevel gear 601 is meshed with the second bevel gear 602, the rotation of the second bevel gear 602 drives the first bevel gear 601 to rotate, thereby driving the threaded rod 3 to rotate. The rotation of the threaded rod 3 drives the moving cylinder 5 to move linearly along the direction of the notch 4. The movement of the moving cylinder 5 drives the drawing frame 7 to move, thereby adjusting its height.

[0028] The inner wall of the drawing frame 7 is provided with a drawing board 1 701, and the upper and lower side walls of the drawing frame 7 are respectively provided with a slide groove 1 704 and a slide groove 2 705, and the slide groove 1 704 and the slide groove 2 705 are provided with two and correspond to each other, and the left and right side walls of the drawing frame 7 are provided with a card slot 706, and the card slot 706 is provided with four. The interior of the drawing frame 7 is provided with a drawing board 2 702 and a drawing board 3 703, and the upper and lower sides of the drawing board 2 702 and the drawing board 3 703 are provided with sliders 707, and the slider 707 of the drawing board 2 702 slides in the slide groove 1 704, and the slider 707 of the drawing board 3 703 Sliding in the second slide groove 705, the two sides of the drawing board 2 702 and the drawing board 3 703 are respectively engaged with the corresponding card slots 706, and a handle 708 is provided on one side of the drawing board 2 702 and the drawing board 3 703. Pulling the handle 708 will cause the drawing board 2 702 and the drawing board 3 703 to slide in the first slide groove 704 and the second slide groove 705, so that the drawing board 1 701, the drawing board 2 702 and the drawing board 3 703 can all be used, thereby increasing the use area of ​​painting and facilitating students' review. A placement groove 709 is provided on one side of the drawing frame 7 for placing chalk and a blackboard eraser.

[0029] Example 2

[0030] The limiting mechanism 8 includes a limiting plate 801 and a rotating shaft 804. The limiting plate 801 is arranged on the outer side of the support tube 2. A plurality of limiting holes 802 are opened on the surface of the limiting plate 801. A vertical plate 803 is arranged at the top of the support plate 1. Two vertical plates 803 are arranged. The rotating shaft 804 is rotatably arranged between the two vertical plates 803. A pedal 806 is arranged on one side of the rotating shaft 804. A compression spring 805 is arranged at the bottom end of the pedal 806. The other end of the compression spring 805 is connected to the top of the support plate 1. The rotating shaft 80 A limiting rod 807 is provided on one side of 4, and one end of the limiting rod 807 corresponds to the limiting hole 802. Under the action of the compression spring 805, the pedal 806 is pressed, and the pedal 806 drives the rotating shaft 804 to rotate, thereby driving the limiting rod 807 to rotate, and separating the limiting rod 807 from the limiting hole 802. Under the action of the support tube 2, the drawing frame 7 can be rotated. When it rotates to a suitable position, the pedal 806 is released. Similarly, the limiting rod 807 is inserted into the limiting hole 802 to limit the support tube 2.

[0031] When in use, first adjust the position of the drawing frame 7 according to the teacher's height, turn the handle 605, the rotation of the handle 605 drives the connection rod 603 to rotate, thereby driving the second bevel gear 602 to rotate, because the first bevel gear 601 is meshed and connected with the second bevel gear 602, the rotation of the second bevel gear 602 drives the first bevel gear 601 to rotate, thereby driving the threaded rod 3 to rotate, the rotation of the threaded rod 3 drives the moving cylinder 5 to move linearly along the direction of the notch 4, and the movement of the moving cylinder 5 drives the drawing frame 7 to move, thereby adjusting its height;

[0032] It is convenient for students on both sides of the classroom to watch the drawing board. Under the action of the compression spring 805, the pedal 806 is pressed, and the pedal 806 drives the rotating shaft 804 to rotate, thereby driving the limiting rod 807 to rotate, and the limiting rod 807 is separated from the limiting hole 802. Since the support tube 2 is rotatably connected with the support plate 1, the drawing frame 7 can be rotated. When it is rotated to a suitable position, the pedal 806 is released. Similarly, the limiting rod 807 is inserted into the limiting hole 802 to limit the support tube 2 to prevent the drawing frame 7 from shaking during drawing.

[0033] Pulling the handle 708 causes the drawing board 2 702 and the drawing board 3 703 to slide in the slide groove 1 704 and the slide groove 2 705, so that the drawing board 1 701, the drawing board 2 702 and the drawing board 3 703 can all be used, thereby increasing the use area of ​​painting, not occupying space, and also reducing wiping, which is convenient for students to review.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable teaching drawing board, comprising a support board (1), characterized in that: A support cylinder (2) is rotatably provided at the top end of the support plate (1), a threaded rod (3) is rotatably provided at the bottom end of the support cylinder (2), a moving cylinder (5) is slidably provided inside the support cylinder (2), and the inside of the moving cylinder (5) is hollow, the threaded rod (3) passes through the bottom end of the moving cylinder (5) and is threadedly connected thereto, a driving mechanism (6) for driving the threaded rod (3) to rotate is provided on one side, a notch (4) corresponding to the moving cylinder (5) is provided at the top end of the support cylinder (2), a drawing frame (7) is provided at the top end of the moving cylinder (5), and a limiting mechanism (8) for fixing the rotating drawing frame (7) is provided on the outer side of the support cylinder (2).

2. The adjustable teaching drawing board according to claim 1, characterized in that: The bottom end of the support plate (1) is provided with a support column (101), and four support columns (101) are provided, respectively located at four corners of the bottom end of the support plate (1), and the bottom end of the support column (101) is provided with a universal wheel (102).

3. The adjustable teaching drawing board according to claim 1, characterized in that: The driving mechanism (6) comprises a first bevel gear (601) and a second bevel gear (602), wherein the first bevel gear (601) is arranged at the bottom of the threaded rod (3), and the second bevel gear (602) is arranged vertically with the first bevel gear (601) and meshedly connected, and a connecting rod (603) is provided on one side of the second bevel gear (602), and the connecting rod (603) passes through the side wall of the support tube (2) and is rotatably connected thereto, and an end of the connecting rod (603) away from the second bevel gear (602) is connected to a connecting plate (604), and a turning handle (605) is rotatably provided at the bottom end of one side of the connecting plate (604).

4. The adjustable teaching drawing board according to claim 1, characterized in that: The inner wall of the drawing frame (7) is provided with a drawing board 1 (701), the upper and lower side walls of the drawing frame (7) are respectively provided with a slide groove 1 (704) and a slide groove 2 (705), there are two slide grooves 1 (704) and two slide grooves 2 (705) and they correspond to each other, the left and right side walls of the drawing frame (7) are provided with card slots (706), there are four card slots (706).

5. The adjustable teaching drawing board according to claim 4, characterized in that: The drawing frame (7) is provided with a second drawing board (702) and a third drawing board (703) inside. Sliders (707) are provided on the upper and lower sides of the second drawing board (702) and the third drawing board (703). The slider (707) of the second drawing board (702) slides in the first slide groove (704), and the slider (707) of the third drawing board (703) slides in the second slide groove (705). The two sides of the second drawing board (702) and the third drawing board (703) are respectively engaged with the corresponding slots (706).

6. The adjustable teaching drawing board according to claim 5, characterized in that: A handle (708) is provided on one side of the drawing board 2 (702) and the drawing board 3 (703), and a placement groove (709) is provided on one side of the drawing frame (7).

7. The adjustable teaching drawing board according to claim 1, characterized in that: The limiting mechanism (8) comprises a limiting plate (801) and a rotating shaft (804); the limiting plate (801) is arranged on the outside of the supporting tube (2); a plurality of limiting holes (802) are provided on the surface of the limiting plate (801); a vertical plate (803) is provided at the top end of the supporting plate (1); two vertical plates (803) are provided; and the rotating shaft (804) is rotatably arranged between the two vertical plates (803).

8. The adjustable teaching drawing board according to claim 7, characterized in that: A pedal (806) is provided on one side of the rotating shaft (804), a compression spring (805) is provided at the bottom end of the pedal (806), and the other end of the compression spring (805) is connected to the top end of the support plate (1), and a limiting rod (807) is provided on one side of the rotating shaft (804), and one end of the limiting rod (807) corresponds to the limiting hole (802).

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