Writing board anti-shaking device

Abstract

The utility model is applicable to the technical field of writing boards, and provides a writing board anti-shaking device which comprises a mounting frame and a supporting box, a movable supporting seat is mounted on the bottom surface of the mounting frame, two sides of the supporting box are rotatably mounted on the mounting frame through mounting shafts, and a fixing component for fixing a writing board is arranged on the supporting box. An adjusting assembly for adjusting the overturning angle of the supporting box is further arranged on the mounting frame, the fixing assembly comprises four limiting pieces movably arranged on the supporting box and a driving assembly for driving the four limiting pieces to synchronously move in the direction close to or away from the center of the supporting box, and the limiting pieces are of an L-shaped structure. The four limiting pieces are distributed at the four right-angle positions of the supporting box in an array mode, the fixing assembly fixes the writing board from the four right-angle positions through the four L-shaped limiting pieces, compared with a complex multi-clamping-board structure, the writing board fixing device is simpler and more efficient, the writing board can be effectively prevented from shaking, and in the process that the driving assembly drives the four limiting pieces to synchronously move, the writing board can be conveniently and rapidly fixed. The method has the advantages of simple operation, convenience and rapidness.

Description

TECHNICAL FIELD

[0001] The utility model relates to writing board technical field, concretely is a writing board anti -shaking device. BACKGROUND

[0002] In the education and teaching scene, the writing board as the important tool that teacher transmits knowledge, shows the teaching content, its stability directly influences the teaching effect. A stable writing board can make the teacher write smoothly, and the student clearly watches the board content, promotes the classroom efficiency.

[0003] Prior art such as the teaching writing board anti -shaking device disclosed in CN216907345U, through the transmission between drive motor and side clamping plate, upper clamping plate, realize the position fixation to four sides of writing board, solve the writing board shaking problem to a certain extent, make writing board more stable, avoid shaking when writing, operation is also more convenient.

[0004] However, the device has obvious limitations: first, its structure is complex, and numerous transmission components and clamping plate design make the production and manufacturing difficulty of the device increase, and the cost rises, and the complex structure also means higher maintenance cost, in the long-term use process, transmission component is prone to wear and tear, failure, and needs frequent maintenance and replacement of spare parts, and a large amount of manpower, material resources and time cost is consumed.

[0005] Secondly, the device cannot adjust the angle of the writing board according to the teaching demand, in actual teaching, different teaching scenes and teaching methods have different requirements for the angle of the writing board, for example, when showing some graphics with stereoscopic feeling or carrying out special board writing demonstration, the angle of the writing board needs to be adjusted to facilitate the students to watch, and the existing device cannot meet this diversified demand, and the applicability of the device in different teaching scenes is limited.

[0006] Therefore, it has important practical significance to develop a new type of writing board anti -shaking device with simple structure, low maintenance cost and flexible adjustment of the angle of the writing board according to the demand, which will help to improve the teaching experience and promote the innovative development of education and teaching. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a kind of writing board anti -shaking device to solve the problems raised in the above background.

[0008] To achieve the above object, the utility model provides the following technical scheme:

[0009] The utility model provides a kind of writing board anti-shaking device, including mounting frame and support box, the mounting frame is U-shaped structure, the bottom surface of mounting frame is symmetrically installed with mobile support seat, the both sides of support box are rotatably installed on mounting frame by mounting shaft, and fixing assembly for fixing writing board is provided on support box, adjusting assembly for adjusting the turning angle of support box is further provided on mounting frame, the fixing assembly includes four limit pieces movably arranged on support box and drive assembly for driving four limit pieces to move towards the center of support box, the limit piece is L-shaped structure, and four limit pieces are arrayed in four right-angle positions of support box.

[0010] As a further scheme of the utility model: the drive assembly includes fixed sleeve fixedly installed in the support box, first bevel gear rotatably installed in the fixed sleeve and four second bevel gears meshingly arranged around the first bevel gear, the shaft center of the second bevel gear is fixedly installed with screw rod, the screw rod is rotatably installed in the support box, and the screw rod is installed with screw nut matched therewith, the screw nut is connected with the limit piece through connecting rod, and the side surface of the support box is further provided with first side hole for the sliding of the connecting rod.

[0011] As a further scheme of the utility model: the back surface of the support box is rotatably installed with hand wheel coaxially fixedly connected with the first bevel gear.

[0012] As a further scheme of the utility model: the horizontal rod and vertical rod of the limit piece are both fixedly provided with round rod, and the side surface of the support box is provided with second side hole for the sliding of the round rod on both sides of the first side hole.

[0013] As a further scheme of the utility model: the side surface of the limit piece away from the support box is further fixedly installed with triangular baffle.

[0014] As a further scheme of the utility model: the adjusting assembly includes arc-shaped plate fixedly installed on the side wall of the mounting frame and fastening knob screwedly installed on the side surface of the support box, and the arc-shaped plate is provided with arc-shaped hole for the sliding of screw rod in the fastening knob.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] In the utility model, the support box is rotatably installed on the mounting frame by mounting shaft, and the angle of the writing board can be adjusted in combination with the adjusting assembly, so as to meet different teaching needs; the fixing assembly uses four L-shaped limit pieces to fix the writing board from four right-angle positions, which is more simple and efficient than the complex multi-clamping plate structure, and can effectively prevent the writing board from shaking; and in the process of synchronous movement of the four limit pieces driven by the drive assembly, the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1It is the whole structure schematic diagram of the anti-shaking device of writing board;

[0018] Figure 2 It is another view structure schematic diagram of the anti-shaking device of writing board;

[0019] Figure 3 It is the internal structure schematic diagram of the support box in the anti-shaking device of writing board;

[0020] Figure 4 It is the stereoscopic enlarged view of the limiting piece in the anti-shaking device of writing board;

[0021] In the figure: 1, mounting frame; 2, moving support seat; 3, support box; 4, mounting shaft; 5, limiting piece; 6, fixed sleeve; 7, first bevel gear; 8, second bevel gear; 9, screw rod; 10, screw sleeve; 11, first side hole; 12, connecting rod; 13, hand wheel; 14, round rod; 15, second side hole; 16, triangular baffle; 17, arc-shaped plate; 18, fastening knob; 19, arc-shaped hole. DETAILED DESCRIPTION

[0022] The technical solution of the patent will be further described in detail in combination with specific embodiments.

[0023] Example 1

[0024] Please refer to Figures 1-4 , the anti-shaking device of writing board, including mounting frame 1 and support box 3, the mounting frame 1 is U-shaped structure, the bottom surface of mounting frame 1 is symmetrically installed with moving support seat 2, the moving support seat 2 facilitates the movement and carrying of the device, and the position can be flexibly adjusted according to the teaching scene, the two sides of the support box 3 are rotatably installed on the mounting frame 1 through mounting shaft 4, and the support box 3 is provided with a fixing assembly for fixing the writing board, and the mounting frame 1 is also provided with an adjusting assembly for adjusting the overturning angle of the support box 3, the support box 3 is rotatably installed on the mounting frame 1 through the mounting shaft 4, and the adjusting assembly can realize the adjustment of the angle of the writing board, meet different teaching needs, the fixing assembly includes four limiting pieces 5 movably arranged on the support box 3 and a driving assembly for driving the four limiting pieces 5 to move synchronously towards the center of the support box 3, the limiting piece 5 is L-shaped structure, the four limiting pieces 5 are arrayed at the four right angle positions of the support box 3, the fixing assembly fixes the writing board from the four right angle positions by using the four L-shaped limiting pieces 5, compared with the complex multi-card plate structure, it is more simple and efficient, and can effectively prevent the writing board from shaking, and in the process of driving the four limiting pieces 5 to move synchronously by the driving assembly, it has the advantages of simple operation, convenience and quickness.

[0025] The driving assembly comprises a fixed sleeve 6 fixedly installed in the support box 3, a first bevel gear 7 rotatably installed in the fixed sleeve 6, and four second bevel gears 8 meshingly arranged at the periphery of the first bevel gear 7, the shaft center of the second bevel gear 8 is fixedly installed with a screw rod 9, the screw rod 9 is rotatably installed in the support box 3, and the screw rod 9 is installed with a screw sleeve 10 matched therewith, the screw sleeve 10 is connected with the limiting piece 5 through a connecting rod 12, and the side surface of the support box 3 is further provided with a first side hole 11 for sliding of the connecting rod 12, the driving assembly is driven by the first bevel gear 7 and the four second bevel gears 8, realizes synchronous movement of four limiting pieces 5 by one driving source, has compact structure and high transmission efficiency, only needs to rotate the first bevel gear 7, so that the screw rod 9 drives the screw sleeve 10 to move, and then the connecting rod 12 pushes the limiting piece 5 to be close to or away from the center of the support box 3, so that the writing board is fixed or loosened conveniently and quickly.

[0026] In addition, in order to facilitate the rotation of the first bevel gear 7, the back surface of the support box 3 is rotatably installed with a hand wheel 13 coaxially fixedly connected with the first bevel gear 7.

[0027] The adjusting assembly comprises an arc-shaped plate 17 fixedly installed on the side wall of the mounting frame 1 and a fastening knob 18 screwedly installed on the side surface of the support box 3, the arc-shaped plate 17 is provided with an arc-shaped hole 19 for sliding of the screw rod 9 in the fastening knob 18, the fastening knob 18 is rotated to make the screw rod 9 slide in the arc-shaped hole 19, so that the overturning angle of the support box 3 can be easily adjusted, and then the angle of the writing board is changed, the adjusting mode is simple and intuitive, and after being adjusted to a suitable angle, the fastening knob 18 is tightened to be fixed, so that the operation is convenient, the cost is low, and the problem that the writing board angle cannot be adjusted in the prior art is solved.

[0028] Embodiment 2

[0029] The embodiment is improved on the basis of the embodiment 1, and specifically:

[0030] Please refer to Figure 1 , Figure 3 and Figure 4 , the horizontal rod and the vertical rod of the limiting piece 5 are fixedly provided with a round rod 14, the side surface of the support box 3 is provided with a second side hole 15 for sliding of the round rod 14 on both sides of the first side hole 11, the round rod 14 and the second side hole 15 are provided, which provides a stable guiding effect for movement of the limiting piece 5, ensures that the limiting piece 5 will not be deviated or jammed during movement, so that the limiting piece 5 can more accurately limit and fix the writing board, and the stability and reliability of the fixing assembly are enhanced.

[0031] In addition, the limiting piece 5 is fixedly installed with a triangular baffle 16 away from the side surface of the supporting box 3, the triangular baffle 16 can play a certain blocking and limiting role on the front surface of the writing board, and can better clamp the writing board, prevent the writing board from being displaced due to vibration, collision and other reasons in the use process, further improve the fixing effect of the writing board, and reduce the shaking.

[0032] Working principle:

[0033] When the writing board needs to be fixed, the hand wheel 13 at the back of the supporting box 3 is rotated, the hand wheel 13 drives the first bevel gear 7 to rotate, the first bevel gear 7 drives the four second bevel gears 8 meshed around to rotate, the second bevel gears 8 make the screw rod 9 rotate synchronously, the screw sleeve 10 on the screw rod 9 moves along the screw rod 9 under the action of the screw thread, the connecting rod 12 pushes the limiting piece 5 to move towards the center of the supporting box 3, and the triangular baffle 16 on the limiting piece 5 tightly fixes the writing board on the supporting box 3;

[0034] When the angle of the writing board needs to be adjusted, the fastening knob 18 is loosened, the supporting box 3 can rotate on the mounting bracket 1 around the mounting shaft 4, after the supporting box 3 is turned to a suitable angle according to the requirement, the fastening knob 18 is tightened again, the supporting box 3 is fixed at the angle through the cooperation of the fastening knob 18 and the arc-shaped plate 17, the adjustment of the angle of the writing board is completed, and the supporting seat 2 is moved, so that the whole device can be moved between different teaching sites.

[0035] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0036] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Anti-shaking device for writing board, comprising a mounting frame (1) and a supporting box (3), characterized in that, The mounting frame (1) is of U-shaped structure, and the bottom surface of the mounting frame (1) is symmetrically provided with a moving support base (2); the two sides of the support box (3) are rotatably installed on the mounting frame (1) through mounting shafts (4), and the support box (3) is provided with a fixing assembly for fixing a writing board; the mounting frame (1) is further provided with an adjusting assembly for adjusting the overturning angle of the support box (3); the fixing assembly comprises four limiting pieces (5) movably arranged on the support box (3) and a driving assembly for driving the four limiting pieces (5) to move synchronously towards the direction close to or away from the center of the support box (3); the limiting piece (5) is of L-shaped structure, and the four limiting pieces (5) are arrayed at the four right-angled positions of the support box (3).

2. The writing board anti-shaking device according to claim 1, characterized in that, The driving assembly comprises a fixed sleeve (6) fixedly installed in the support box (3), a first bevel gear (7) rotatably installed in the fixed sleeve (6), and four second bevel gears (8) meshingly arranged at the periphery of the first bevel gear (7); the shaft center of the second bevel gear (8) is fixedly provided with a screw rod (9), the screw rod (9) is rotatably installed in the support box (3), and the screw rod (9) is provided with a screw sleeve (10) matched therewith; the screw sleeve (10) is connected with the limiting piece (5) through a connecting rod (12), and the side surface of the support box (3) is further provided with a first side hole (11) for sliding of the connecting rod (12).

3. The writing board anti-shaking device according to claim 2, characterized in that, The back surface of the support box (3) is rotatably provided with a hand wheel (13) coaxially fixedly connected with the first bevel gear (7).

4. The writing board anti-shaking device according to claim 2, characterized in that, The cross rod and the vertical rod of the limiting piece (5) are both fixedly provided with a round rod (14), and the side surface of the support box (3) is provided with a second side hole (15) for sliding of the round rod (14) on both sides of the first side hole (11).

5. The writing board anti-shaking device according to claim 1, characterized in that, The side surface of the limiting piece (5) away from the support box (3) is further fixedly provided with a triangular baffle (16).

6. The writing board anti-shaking device according to claim 1, characterized in that, The adjusting assembly comprises an arc-shaped plate (17) fixedly installed on the side wall of the mounting frame (1) and a fastening knob (18) screwedly installed on the side surface of the support box (3); the arc-shaped plate (17) is provided with an arc-shaped hole (19) for sliding of the screw rod (9) in the fastening knob (18).

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