Lifting writing board

Abstract

The lifting writing board comprises a movable supporting frame and two writing board bodies, the movable supporting frame comprises two vertical and parallel stand columns, mounting grooves are formed in the opposite sides of the two stand columns in the height direction, sliding rails are arranged on the two sides of each mounting groove in the height direction respectively, and an upper guide pulley and a lower guide pulley are arranged on the bottom face of each mounting groove. The two writing boards are both arranged between the two stand columns, the side portions of the two sides of each writing board are each connected with at least one fixing block, the fixing blocks extend into the installation grooves, and the sliding rails of the sliding rails on the same side of the two installation grooves are fixedly connected with the corresponding fixing blocks of the same writing board. At least one fixing block of the writing board is connected with one end of a first pull rope and one end of a second pull rope, the other end of the first pull rope is connected with the fixing block of the other writing board around the upper guide pulley, and the other end of the second pull rope is connected with the fixing block of the other writing board around the lower guide pulley. The writing board is fixed through the two sliding rails, the writing board is convenient to assemble and disassemble through the fixing blocks, and the overall structural design is more reasonable.

Description

Technical Field

[0001] The utility model relates to a lifting writing board. Background Art

[0002] At present, most writing boards on the market are a whole board, which is inconvenient to write on the top and bottom, and inconvenient to read. The latter writing board is improved to two parallel writing boards and is set to rise and fall. Although the above shortcomings are solved, the two writing boards are lifted and lowered by only one slide rail on each side. The slide rail needs to meet the distance of the staggered arrangement of the two writing boards, that is, the length of the slide rail is equal to the sum of the heights of the two writing boards, and the height of the fixed frame supporting the two writing boards also needs to be greater than the sum of the heights of the two writing boards. In addition, the slide rail structure is complex and the cost is high. Moreover, the slide rail is easily damaged when the writing board is subjected to force during writing, and the overall installation is inconvenient. When the writing board is damaged and needs to be replaced, the entire structure basically needs to be disassembled. Utility Model Content

[0003] The utility model aims to provide a lifting writing board with a more reasonable structure.

[0004] The purpose of the utility model is achieved in this way.

[0005] A lifting writing board comprises a movable support frame and two writing boards, the movable support frame comprises two vertical and parallel columns, the two columns are provided with mounting grooves on the opposite sides along the height direction, the two sides of the mounting grooves are respectively provided with slide rails along the height direction, the bottom surface of the mounting grooves is provided with an upper guide pulley and a lower guide pulley, the two writing boards are arranged between the two columns, the two sides of each writing board are connected with at least one fixed block, the fixed blocks extend into the mounting grooves, the sliding rails of the slide rails on the same side of the two mounting grooves are connected and fixed to the fixed blocks corresponding to the same writing board, at least one fixed block of the writing board is connected with one end of a first pull rope and one end of a second pull rope, the other end of the first pull rope is connected to the fixed block of another writing board around the upper guide pulley, and the other end of the second pull rope is connected to the fixed block of another writing board around the lower guide pulley.

[0006] The writing board of the utility model is fixed by two slide rails, the slide rails have a simple structure, are more evenly stressed, and are not easily damaged; the fixing blocks facilitate assembly and disassembly of the writing board, and the overall structural design is more reasonable.

[0007] The above technical solution can be further improved as follows.

[0008] Furthermore, the slide rail includes the sliding rail and the fixed rail, the fixed rail is fixed in the installation groove, the top surface of the installation groove extends to the top surface of the column and is open, when a writing board moves up to the highest position, the corresponding sliding rail slides upward in the fixed rail and extends out of the top surface of the column, when another writing board moves down to the lowest position, the corresponding sliding rail slides downward in the fixed rail and extends out of the end of the fixed rail. The length of the column and the slide rail is shortened, reducing the overall weight.

[0009] Furthermore, the length of the fixed rail is greater than the length of the sliding rail, and the length of the sliding rail is shorter than the height of the writing board. The length of the sliding rail is shortened.

[0010] Furthermore, each writing board is connected and fixed to the sliding rail by three fixing blocks, the three fixing blocks are arranged in the height direction, the uppermost fixing block connects and fixes the top of the sliding rail and the writing board near the top, the lowermost fixing block connects and fixes the bottom of the sliding rail and the writing board near the bottom, and the middle fixing block connects and fixes the middle of the sliding rail and the middle of the writing board. The connection structure between the writing board and the fixing blocks is simple and the force is evenly distributed.

[0011] Furthermore, the fixed block is connected to the fixed block or the sliding rail by screws, so that the sliding rail, the writing board and the fixed block can be easily assembled and disassembled.

[0012] Furthermore, the first pull rope and the second pull rope are both connected and fixed to the middle fixing block.

[0013] Furthermore, the ends of the first pull rope and the second pull rope are fastened to the corresponding fixing blocks by screws. The first pull rope and the second pull rope are easy to assemble and disassemble.

[0014] Furthermore, the adjacent side surfaces of the upright column and the writing board are flush or have a gap in the projection direction of the front or back. The writing board is easy to assemble and disassemble.

[0015] Furthermore, the lower guide pulley is arranged at the lower middle part of the column.

[0016] Furthermore, the front and rear sides of the column are detachably connected with side panels, the side panels and the column form the installation slot, and the fixed rail of the slide rail is detachably connected to the inner side of the side panel. The slide rail is easy to install and remove.

[0017] The utility model has a writing board fixed by two slide rails. The slide rails have a simple structure, are more evenly stressed, and are not easily damaged. The fixing block facilitates the assembly and disassembly of the writing board, and the overall structural design is more reasonable. The length of the column is shortened, and the overall weight is reduced. The length of the slide rail is shortened. The connection structure between the writing board and the fixing block is simple and is evenly stressed. The assembly and disassembly between the slide rail, the writing board and the fixing block are easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of embodiment 1.

[0019] Figure 2 It is a side view of the column and slide rail installation structure in the first embodiment.

[0020] Figure 3 It is a top view of the column and slide rail installation structure in Example 1.

[0021] Figure 4This is a schematic diagram of the sliding rail installation structure of the writing board, fixed block and sliding rail in Example 1.

[0022] Figure 5-7 This is a schematic diagram of the physical structure of the lifting writing board of Example 1. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Example 1, see Figure 1-7 As shown, a lifting writing board includes a movable support frame 1 and two writing boards 2. The movable support frame 1 includes two vertical and parallel columns 11, a base frame 12 and universal wheels 13. The columns 11 are fixed on the base frame 12, the universal wheels 13 are fixed on the bottom surface of the base frame 12, and the two columns 11 are connected and fixed by a cross bar 14.

[0025] The side panels 3 are detachably connected to the front and rear sides of the column 11, and a mounting groove 30 is formed between the side panels 3 and the column 11 along the height direction. The top surface of the mounting groove 30 extends to the top surface of the column 11 and is open. Slide rails 4 are respectively provided on both sides of the mounting groove 30 along the height direction, that is, the inner side surface of the side panel 3 is detachably connected to the slide rail 4. Specifically, the side panel 3 and the column 11 are connected and fixed by screws, and the fixed rail 42 of the slide rail 4 is connected and fixed to the side panel 3 by screws.

[0026] An upper guide pulley 5 and a lower guide pulley 6 are provided on the bottom surface of the mounting groove 30 . The upper guide pulley 5 is provided near the top of the column 11 , and the lower guide pulley 6 is provided at the middle and lower part of the column 11 .

[0027] The two writing boards 2 are arranged between the two columns 11. The two writing boards 2 are staggered in the vertical direction (viewed from above). Three fixing blocks 7 are connected to the sides of each writing board 2. The three fixing blocks 7 are arranged in the height direction. The fixing blocks 7 extend into the mounting groove 30. The sliding rails 41 of the slide rails 4 on the same side of the two mounting grooves 30 are connected and fixed to the fixing blocks 7 corresponding to the same writing board 2. Specifically, each writing board 2 is connected and fixed to the sliding rails 41 through the three fixing blocks 7. The top fixing block 7 connects and fixes the top of the sliding rail 41 and the writing board 2 near the top. The bottom fixing block 7 connects and fixes the bottom of the sliding rail 41 and the writing board 2 near the bottom. The middle fixing block 7 connects and fixes the middle of the sliding rail 41 and the middle of the writing board 2. The columns 11 and the adjacent sides of the writing board 2 are flush in the projection direction of the front or back.

[0028] The fixed block 7 in the middle of the writing board 2 is connected to one end of the first pull rope 8 and one end of the second pull rope 9. The other end of the first pull rope 8 is wrapped around the upper guide pulley 5 to connect to the fixed block 7 in the middle of another writing board 2. The other end of the second pull rope 9 is wrapped around the lower guide pulley 6 to connect to the fixed block 7 in the middle of another writing board 2.

[0029] In this embodiment, the slide rail 4 includes the sliding rail 41 and the fixed rail 42, and the sliding rail 41 is slidably arranged in the fixed rail 42. The length of the fixed rail 42 is greater than the length of the sliding rail 41, and the length of the sliding rail 41 is shorter than the height of the writing board 2. Preferably, the slide rail 4 is a telescopic slide rail 4, and the connection between the sliding rail 41 and the fixed rail 42 is the prior art.

[0030] The fixing block 7 is connected to the fixing block 7 or the sliding rail 41 by screws. The ends of the first pull rope 8 and the second pull rope 9 are fastened to the corresponding fixing block 7 by screws.

[0031] The slide rail 4 includes the sliding rail 41 and the fixed rail 42. The fixed rail 42 is fixed in the mounting groove 30. The top surface of the mounting groove 30 extends to the top surface of the column 11 and is open. When one writing board 2 moves to the highest position, the corresponding sliding rail 41 slides upward in the fixed rail 42 and extends out of the top surface of the column 11. When the other writing board 2 moves down to the lowest position, the corresponding sliding rail 41 slides downward in the fixed rail 42 and extends out of the end of the fixed rail 42.

Claims

1. A lifting writing board, comprising a movable support frame (1) and two writing boards (2), wherein the movable support frame (1) comprises two vertical and parallel columns (11), and the two columns (11) are provided with mounting grooves (30) along the height direction on the opposite sides thereof, wherein: Slide rails (4) are respectively provided on both sides of the installation groove (30) in the height direction, and an upper guide pulley (5) and a lower guide pulley (6) are provided on the bottom surface of the installation groove (30). The two writing boards (2) are arranged between the two upright posts (11). At least one fixed block (7) is connected to the side parts of both sides of each writing board (2), and the fixed block (7) extends into the installation groove (30). The slide rails (41) of the slide rails (4) on the same side of the two installation grooves (30) are connected and fixed to the fixed block (7) corresponding to the same writing board (2). At least one fixed block (7) of the writing board (2) is connected to one end of a first pull rope (8) and one end of a second pull rope (9). The other end of the first pull rope (8) is wound around the upper guide pulley (5) to connect to the fixed block (7) of another writing board (2), and the other end of the second pull rope (9) is wound around the lower guide pulley (6) to connect to the fixed block (7) of another writing board (2).

2. The lifting writing board according to claim 1 is characterized in that: The slide rail (4) comprises the slide rail (41) and the fixed rail (42), wherein the fixed rail (42) is fixed in the mounting groove (30), wherein the top surface of the mounting groove (30) extends to the top surface of the column (11) and is open, and when one writing board (2) moves upward to the highest position, the corresponding slide rail (41) slides upward in the fixed rail (42) and extends out of the top surface of the column (11); when the other writing board (2) moves downward to the lowest position, the corresponding slide rail (41) slides downward in the fixed rail (42) and extends out of the end of the fixed rail (42).

3. The lifting writing board according to claim 1 is characterized in that: The length of the fixed rail (42) is greater than the length of the sliding rail (41), and the length of the sliding rail (41) is shorter than the height of the writing board (2).

4. The lifting writing board according to claim 1 is characterized in that: Each writing board (2) is connected and fixed by three fixing blocks (7) and the sliding rail (41). The three fixing blocks (7) are arranged in the height direction. The top fixing block (7) connects and fixes the top of the sliding rail (41) and the writing board (2) near the top. The bottom fixing block (7) connects and fixes the bottom of the sliding rail (41) and the writing board (2) near the bottom. The middle fixing block (7) connects and fixes the middle of the sliding rail (41) and the middle of the writing board (2).

5. The lifting writing board according to claim 4 is characterized in that: The first pull rope (8) and the second pull rope (9) are both connected and fixed to the middle fixing block (7).

6. The lifting writing board according to claim 4 is characterized in that: The fixing block (7) is connected and fixed to the fixing block (7) or the sliding rail (41) by means of screws.

7. The lifting writing board according to claim 5, characterized in that: The ends of the first pull rope (8) and the second pull rope (9) are fastened to the corresponding fixing blocks (7) by means of screws.

8. The lifting writing board according to claim 1 is characterized in that: The adjacent side surfaces of the upright column (11) and the writing board (2) are flush with each other or have a gap in the projection direction of the front or back side.

9. The lifting writing board according to claim 2, characterized in that: The lower guide pulley (6) is arranged at the lower middle part of the column (11).

10. The lifting writing board according to claim 1, characterized in that: The front and rear sides of the column (11) are detachably connected to side panels (3), the side panels (3) and the column (11) enclose the mounting groove (30), and the fixed rail (42) of the slide rail (4) is detachably connected to the inner side of the side panel (3).

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