Writing board

Abstract

The utility model relates to a writing board. The writing surface of the conventional push-pull writing board is parallel to the wall surface, so that students in the front row of a classroom have large visual angle inclination and cannot see clearly when watching the writing board diagonally. The utility model provides a push-pull writing board capable of changing the angle of a writing surface. The push-pull writing board comprises an upper frame, a lower frame, side frames, a movable writing board and a movable frame assembly. The moving frame assembly comprises a transverse moving frame and a longitudinal moving block; the transverse moving frame is movably mounted on the upper frame and can transversely move along the upper frame; the longitudinal moving block is movably mounted on the transverse moving frame and can longitudinally move relative to the transverse moving frame; a moving freedom degree adjusting assembly is arranged between the longitudinal moving block and the transverse moving frame and can adjust the moving resistance of the longitudinal moving block on the transverse moving frame. The movable writing board is connected with the longitudinal moving block in a hinged mode. The movable writing board has the advantages that the movable writing board can be pushed, pulled and moved, is matched with multimedia teaching equipment such as a teaching all-in-one machine and an electronic whiteboard for use, can adjust the angle between the movable writing board and a wall surface, and reduces the inclination of a visual angle when a student watches the writing board diagonally.

Description

Technical Field

[0001] The utility model relates to a teaching tool, in particular to a writing board. Background Art

[0002] The sliding writing board currently used in the market has a writing surface that is basically parallel to the wall on which it is installed, and the angle between the writing surface and the wall cannot be changed. When students sitting on the left and right sides of the front of the classroom look at the writing board diagonally, the angle of view is very large, which affects the viewing effect. For fixed writing boards, curved writing board technology can be used. The writing surface of the writing board is in an arc shape as a whole, which reduces the angle of view when viewing the writing board diagonally. However, the current curved writing board can only be fixed on the wall and cannot be pushed or pulled left and right, which is not convenient for use with multimedia teaching equipment such as teaching all-in-one machines and electronic whiteboards. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the utility model provides a writing board that can be pushed and pulled and can change the writing surface angle. When the movable writing board is located in the left area of ​​the classroom, the movable writing board can be tilted to the right to facilitate the students on the right side of the classroom to watch; when the movable writing board is located in the right area of ​​the classroom, the movable writing board can be tilted to the left to facilitate the students on the left side of the classroom to watch.

[0004] The technical solution adopted by the utility model is: a writing board, comprising a left side frame, a right side frame, an upper frame, a lower frame, a movable writing board, and a movable frame assembly. The left side frame, the right side frame, the upper frame, and the lower frame constitute the overall frame of the writing board.

[0005] The movable frame assembly includes a transverse movable frame and a longitudinal movable block; the transverse movable frame is movably mounted on the upper frame and can move transversely along the upper frame; the longitudinal movable block is movably mounted on the transverse movable frame and can move longitudinally relative to the transverse movable frame; a movable freedom adjustment component is arranged between the longitudinal movable block and the transverse movable frame, which can adjust the resistance of the longitudinal movable block to the movement of the transverse movable frame and can lock the longitudinal movable block on the transverse movable frame; the movable writing board is connected to the longitudinal movable block by a hinged manner, and the movable writing board and the longitudinal movable block can rotate about a vertical axis, and at the same time, the movable writing board can move longitudinally with the longitudinal movable block and can move transversely with the movable frame assembly.

[0006] Furthermore, a limit assembly is provided between the longitudinal moving block and the transverse moving frame to control two pairs of moving distances therebetween.

[0007] Furthermore, a handle is installed on the front side of the movable writing board.

[0008] Furthermore, the movable writing board is connected to the longitudinal moving block via a transfer block, the transfer block is connected to the longitudinal moving block in a hinged manner, and the transfer block is fixedly connected to the movable writing board.

[0009] Furthermore, the movement freedom adjustment component is composed of an adjustment nut, a spring, and a pressure rod, and the pressure head end surface of the pressure rod is a spherical surface.

[0010] Furthermore, a wavy rack is provided in the area of ​​the movable frame assembly that contacts the pressure head of the pressure rod, and the wavy line direction is longitudinal, which cooperates with the mobile freedom adjustment component to realize step-by-step movement between the longitudinal movable block and the transverse movable frame.

[0011] Furthermore, a chalk groove is installed at the lower end of the front side of the movable writing board.

[0012] Furthermore, two movable frame assemblies are installed on the upper frame, respectively connecting the two ends of the movable writing board.

[0013] Furthermore, the lower frame is also movably mounted with a movable frame assembly, which can move laterally along the lower frame. The movable frame assembly is connected to the lower end surface of the movable writing board in the same manner as that of the upper frame.

[0014] Furthermore, the lateral movement of the lateral moving frame and the upper frame adopts a pulley method, a slide rail arranged along the lateral direction of the writing board is provided in the upper frame, and a pulley cooperating with the slide rail is installed on the lateral moving frame.

[0015] Furthermore, the lower frame has the same structure as the upper frame, and the positions of the movable frame assemblies mounted on the upper frame and the lower frame are symmetrical in vertical direction.

[0016] Furthermore, the longitudinal movement of the longitudinal moving block and the transverse moving frame adopts a pulley method.

[0017] On the basis of the above technical solution, the present invention can also be improved as follows.

[0018] Furthermore, two movable writing boards are provided, which are arranged side by side in the horizontal direction, and both of the two movable writing boards can be moved horizontally and the angle between them and the wall can be adjusted.

[0019] Furthermore, a fixed writing board is installed at one end of the upper frame, the fixed writing board is closely attached to the upper frame, and the movable writing board can move horizontally across the fixed writing board.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the angle between the movable writing board and the wall can be adjusted to reduce the angle of the viewing angle when students watch the writing board diagonally. When the movable writing board is located on the left side of the classroom, the movable writing board can be tilted to the right to facilitate the viewing of students on the right side of the classroom. When the movable writing board is located on the right side of the classroom, the movable writing board can be tilted to the left to facilitate the viewing of students on the left side of the classroom. While the movable writing board can change its angle, it can also be pushed and pulled horizontally, and can be used in conjunction with multimedia teaching equipment such as teaching all-in-one machines and electronic whiteboards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the writing board structure.

[0022] Figure 2 It is a schematic diagram of the structure of the mobile frame assembly.

[0023] Figure 3 A cross-sectional view of the component structure for adjusting the degree of freedom of movement.

[0024] Figure 4 This is an example of the application of two movable writing boards of the utility model (in the open state).

[0025] Figure 5 This is an example of the application of two movable writing boards of the utility model (closed state).

[0026] Figure 6 This is an application example of the utility model with a single movable writing board and a single fixed writing board (in the open state).

[0027] Figure 7 This is an application example of the utility model with a single movable writing board and a single fixed writing board (closed state).

[0028] Figure 8 This is an application example of the dual movable writing board and dual fixed writing board of the utility model (open state).

[0029] Fig. 9 This is an application example of the dual movable writing board and dual fixed writing board of the utility model (closed state).

[0030] In the figure: 1. Left side frame; 2. Upper side frame; 3. Mobile frame assembly 1; 4. Movable writing board; 5. Mobile frame assembly 2; 6. Right side frame; 7. Lower side frame; 8. Handle; 9. Chalk slot; 10. All-in-one teaching machine; 11. Fixed writing board; 12. Mobile frame assembly 3; 13. Mobile frame assembly 4; 21. Slide rail; 31. Horizontal mobile frame; 32. Longitudinal mobile block; 33. Mobile freedom adjustment component; 34. Wave line rack; 35. Adapter block; 36. Articulated shaft; 37. Pulley; 38. Limiting groove; 39. Limiting screw; 331. Adjusting nut; 332. Spring; 333. Pressure rod. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and advantages solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0032] Please refer to the instruction manual Figure 1-Figure 9 As shown, a writing board is composed of a left side frame 1, an upper side frame 2, a right side frame 6, a lower side frame 7 and commonly used connecting accessories to form the overall frame of a push-pull writing board. A slide rail 21 is arranged in the upper side frame 2, and the structure of the lower side frame 7 is the same as that of the upper side frame 2. The upper side frame 2 is installed with a moving frame assembly 1 3 and a moving frame assembly 2 5, and the lower side frame is installed with a moving frame assembly 3 12 and a moving frame assembly 4 13. The structures of the four moving frame assemblies are the same, and the positions of the upper and lower moving frame assemblies correspond. The moving frame assembly is composed of a transverse moving frame 31, a longitudinal moving block 32, and a moving freedom adjustment component 33. The transverse moving frame 31 is installed with four pulleys 37 to cooperate with the slide rail 21 to realize the transverse movement of the transverse moving frame 31. The longitudinal moving block 32 is movably installed on the transverse moving frame 31, and the longitudinal moving block 32 can only move longitudinally along the transverse moving frame 31.

[0033] A limiting groove 38 is provided on the longitudinal moving block 32 , and a limiting screw 39 is installed on the transverse moving frame 31 , and the two constitute a limiting assembly to control the longitudinal moving distance of the longitudinal moving block 32 on the transverse moving frame 31 .

[0034] The horizontal moving frame 31 is provided with a moving freedom adjustment component 33, which is conveniently a screw rod. By loosening or tightening the screw rod, the pressure on the longitudinal moving block 32 is changed, thereby adjusting the moving freedom. In this embodiment, the freedom adjustment component 33 is composed of an adjusting nut 331, a spring 332, and a pressure rod 333, which more effectively controls the resistance of the longitudinal moving block 32 to move on the horizontal moving frame 31. In order to realize the step-by-step movement of the longitudinal moving block 32, a wavy rack 34 is provided in the contact area of ​​the longitudinal moving block 32 with the pressure rod 333, and the wavy line direction is longitudinal. When the longitudinal moving block 32 moves longitudinally, the pressure rod 333 is pushed to move up and down. When there is no longitudinal external force acting on the longitudinal moving block 32, under the action of the spring 332, the pressure rod 333 faces the trough of the wavy rack 34, thereby realizing the step-by-step movement of the longitudinal moving block 32. The movement resistance of the longitudinal moving block 32 can be controlled by adjusting the nut 331 , and tightening the adjusting nut 331 can lock the position of the longitudinal moving block 32 on the transverse moving frame 31 .

[0035] The front end of the longitudinal moving block 32 is hinged to the adapter block 35 through a hinge shaft 36, and the two can rotate axially. The hinge shaft 36 can be a screw-type hinge shaft or a rivet-type hinge shaft. The adapter block 35 is fixedly connected to the upper end surface of the movable writing board 4.

[0036] A handle 8 is installed at the lower end of the front side of the movable writing board 4 to facilitate the movement of the movable writing board 4; a chalk groove 9 is installed at the lower end of the front side of the movable writing board 4 to facilitate the collection of chalk dust.

[0037] It should be noted that: the movable connection between the lateral movable frame 31 and the upper frame 2 can be realized by a slider or other methods in addition to the pulley method described in the embodiment. The movable connection between the longitudinal movable block 32 and the lateral movable frame 31 can be realized by a pulley or other methods in addition to the slider method described in the embodiment.

[0038] The working principle of the utility model is as follows: loosen the movable freedom adjustment component 33, and the two ends of the movable writing board 4 can be pushed and pulled out longitudinally within the limit range. Pull out on the left side and push in on the right side, and the movable writing board 4 deflects to the right; push on the right side and pull out on the left side, and the movable writing board 4 deflects to the left. The size of the deflection angle can be adjusted by the amplitude of longitudinal pushing and pulling. After the movable freedom adjustment component 33 is locked, the longitudinal positions of the two ends of the movable writing board 4 are fixed, and the deflection angle of the movable writing board 4 is fixed. At the same time, in the lateral direction, the movable writing board 4 can move laterally with the movable frame assembly.

[0039] In order to more clearly illustrate the technical problems, technical solutions and beneficial effects of the utility model, the application methods of the utility model are also introduced. The utility model has various application methods: a single movable writing board application method, a combination of two movable writing boards, a movable writing board and a fixed writing board application method, and so on.

[0040] 1. Application of single movable writing board.

[0041] Only one movable writing board 4 is installed on the overall frame of the writing board. When the movable writing board 4 is moved horizontally to the left side of the classroom, the left end of the movable writing board is pulled out longitudinally and the right end is pushed forward longitudinally. The movable writing board 4 forms a certain angle with the wall and deviates to the right, thereby reducing the viewing angle inclination of the students on the right; when the movable writing board 4 is moved horizontally to the right side of the classroom, the right end is pulled out longitudinally and the left end is pushed forward longitudinally, thereby reversing the deflection angle and reducing the viewing angle inclination of the students on the left; when the movable writing board 4 is moved horizontally to the middle of the classroom, the angle can be adjusted to zero, and the movable writing board 4 is parallel to the wall.

[0042] (ii) Cooperative application of two movable writing boards.

[0043] like Figure 4 , Figure 5As shown, two movable writing boards 4 are installed on the overall writing board frame, and the connection position of the adapter block 35 and the movable writing board 4 is appropriately adjusted so that the movable writing board 4 can exceed a certain distance from the side frame when it moves horizontally. The deflection angles of the two movable writing boards 4 are adjusted respectively to form the effect of an arc-shaped writing board, and the deflection angles can be locked by locking the movable freedom adjustment component 33. The teaching all-in-one machine 10 is installed on the wall in the middle position of the overall writing board frame. When the movable writing board 4 is pulled to both sides, the teaching all-in-one machine 10 is exposed, and when the movable writing board 4 is moved to the middle, the teaching all-in-one machine 10 is covered.

[0044] (III) The application of movable writing board and fixed writing board.

[0045] like Figure 5 , Figure 6 As shown, a fixed writing board 11 is installed on one end of the writing board overall frame, a teaching all-in-one machine 10 is installed on the wall at the other end, and a movable writing board 4 is installed on the overall frame. When the movable writing board 4 is pulled out and moved in front of the fixed writing board 11, the teaching all-in-one machine 10 is exposed, and the angle of the movable writing board 4 can be adjusted at this time to achieve a curved writing board effect. When the movable writing board 4 is moved to the end of the teaching all-in-one machine 10, the deflection angle is reversed by longitudinally pushing and pulling the two ends, and the movable writing board 4 can also be adjusted to a position flush with the fixed writing board 11 to achieve a coplanar effect.

[0046] In this application method, a fixed writing board 11 can be installed at each end of the left and right ends of the overall frame of the writing board according to needs, and the length is about one-fourth of the length of the overall frame. Two movable writing boards 4 are installed in the middle, and the length of the movable writing board 4 is also about one-fourth of the length of the overall frame. The teaching all-in-one machine 10 is installed on the middle wall of the overall frame. When the movable writing board 4 is opened to both sides, the teaching all-in-one machine 10 is exposed, and the angle of the movable writing board 4 is adjusted at the same time to achieve the effect of an arc-shaped writing board; when the movable writing board 4 is closed to the middle, the teaching all-in-one machine 10 is shielded, and the two ends of the movable writing board 4 are pushed to achieve the effect of being coplanar with the fixed writing board 11.

[0047] It should be noted that on the basis of this embodiment, application improvements can also be made. For example, the number, position, and arrangement of movable writing boards or fixed writing boards can be changed, and the technical solution of the utility model can be used in conjunction with other teaching equipment such as interconnected blackboards, smart blackboards, electronic whiteboards, cork boards, etc., or the movable writing board can be replaced with other types of writing boards, etc. These should all be regarded as application improvements of the present invention based on common sense, should belong to the same technical solution, and should all be included in the protection scope of the present invention.

Claims

1. A writing board, comprising a left side frame (1), a right side frame (6), an upper frame (2), a lower frame (7), a movable writing board (4), and a movable frame assembly (3, 5), characterized in that: The movable frame assembly comprises a transverse movable frame (31) and a longitudinal movable block (32); the transverse movable frame (31) is movably mounted on the upper frame (2) and can be laterally moved along the upper frame (2); the longitudinal movable block (32) is movably mounted on the transverse movable frame (31) and can be longitudinally moved relative to the transverse movable frame (31); a movable freedom adjustment component (33) is provided between the longitudinal movable block (32) and the transverse movable frame (31); and the movable writing board (4) is connected to the longitudinal movable block (32) in an articulated manner.

2. A writing board according to claim 1, characterized in that: The movable writing board (4) and the longitudinal moving block (32) are connected via a transfer block (35); the transfer block (35) and the longitudinal moving block (32) are hingedly connected; and the transfer block (35) and the movable writing board (4) are fixedly connected.

3. A writing board according to claim 1, characterized in that: The longitudinal moving block (32) and the transverse moving frame (31) are provided with a limiting assembly.

4. A writing board according to claim 1, characterized in that: A handle (8) is installed corresponding to the front side of the movable writing board (4).

5. A writing board according to any one of claims 1 to 4, characterized in that: The movement freedom adjustment component (33) is composed of an adjustment nut (331), a spring (332), and a pressure rod (333).

6. A writing board according to claim 5, characterized in that: A wavy rack (34) is provided on the movable frame assembly in an area in contact with the pressure head of the pressure rod (333), with the wavy line direction being longitudinal.

7. A writing board according to claim 6, characterized in that: The number of movable frame assemblies installed on the upper frame (2) is 2.

8. A writing board according to claim 7, characterized in that: The lower frame (7) is movably mounted with a movable frame assembly, and is connected to the movable writing board (4) via the movable frame assembly. The connection relationship and structural relationship are the same as those of the upper frame (2).

9. A writing board according to claim 8, characterized in that: The number of the movable writing boards (4) is 2, which are arranged side by side in the horizontal direction.

10. A writing board according to claim 8, characterized in that: A writing board (11) is mounted and fixed on one end of the upper frame (2).

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