Orbital transfer type push-pull writing board

Abstract

The utility model relates to an orbital transfer type push-pull writing board which comprises an upper frame, a lower frame, a side frame, a fixed writing board, a movable writing board, a movable frame assembly and guide wheels. A straight guide wheel groove arranged in the transverse direction of the writing board is formed in the upper frame, a notch is formed in one side edge of the straight guide wheel groove, and a U-shaped guide wheel groove block is installed at the position of the notch. The moving frame assembly comprises a transverse moving frame and a longitudinal moving block which are movably connected and move relatively and longitudinally; the transverse moving frame is movably connected with the upper frame and can transversely move along the upper frame; a guide wheel is mounted on the longitudinal moving block, is positioned in the straight guide wheel groove and can enter the U-shaped guide wheel groove block through the notch; the movable writing board is connected to the longitudinal moving block and can longitudinally move along with the longitudinal moving block. The writing board has the advantages that the rail changing problem of the writing board is solved by adopting the single guide wheel groove, the width of the frame of the writing board is effectively reduced, and the attractiveness and the practicability of the writing board are improved.

Description

Technical Field

[0001] The utility model relates to a teaching tool, in particular to a track-changing push-pull writing board. Background Art

[0002] At present, the track-changing push-pull writing boards on the market mainly use two parallel guide wheel grooves to achieve track-changing operations. For example, the utility model patent with publication number CN206999976U uses a technical solution of two parallel guide wheel grooves and two sliding assemblies. The technical solution of double guide wheel grooves has some shortcomings: first, the width of the writing board frame is increased, resulting in the writing board protruding too much from the wall when installed on the wall of the classroom, affecting the aesthetics and practicality of the writing board; second, the positions of the guide wheels of the two sliding assemblies are different, the versatility of the parts is not good, the manufacturing process is complicated, and it is easy to mix up during installation, which brings inconvenience. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the utility model provides a track-changing push-pull writing board with a single guide wheel groove.

[0004] The technical solution adopted by the utility model is: a track-changing push-pull writing board, including a left frame, a right frame, an upper frame, a lower frame, a fixed writing board, a movable writing board, and a mobile frame assembly. The left frame, the right frame, the upper frame, the lower frame, and some common connecting parts constitute the overall frame of the writing board, and a fixed writing board is installed at one end of the frame.

[0005] A straight guide wheel groove arranged along the transverse direction of the writing board is arranged in the upper frame, and a notch is opened on one side of the straight guide wheel groove, and a U-shaped guide wheel groove block is installed at the position of the notch.

[0006] The movable frame assembly includes a transverse movable frame and a longitudinal movable block. The transverse movable frame is movably connected to the upper frame and moves transversely along the upper frame. The longitudinal movable block is movably connected to the transverse movable frame and moves longitudinally relative to the transverse movable frame. The movable writing board is connected to the longitudinal movable block and can move longitudinally along with the longitudinal movable block.

[0007] A guide wheel is installed on the longitudinal moving block. The guide wheel is located in the straight guide wheel groove and can enter the U-shaped guide wheel groove block through the notch.

[0008] Furthermore, the movable writing board is connected to the longitudinal moving block by a transfer block, and the transfer block is connected to the longitudinal moving block in an articulated manner, and the two can rotate axially along an axis in the height direction. The transfer block is fixedly connected to the movable writing board.

[0009] Furthermore, the notch is a half-open notch, and the depth of the half-open notch is about half of the height of the straight guide wheel groove. A full-open notch is opened on the end of the straight guide wheel groove away from the fixed writing board, and there is a certain distance between the two. The depth of the full-open notch is consistent with the height of the straight guide wheel groove. An arc-shaped guide wheel groove block is installed at the position of the full-open notch, and the guide wheel can enter the arc-shaped guide wheel groove block through the full-open notch.

[0010] Furthermore, the number of the movable frame assemblies is two, and the longitudinal movable block on the movable frame assembly far from the fixed writing board is installed with a guide wheel through a long screw, and the guide wheel is close to the bottom of the straight guide wheel groove; the longitudinal movable block on the movable frame assembly close to the fixed writing board is installed with a guide wheel through a short screw, and the installation height of the guide wheel is located in the straight guide wheel groove and can pass through the half-open gap. The distance between the two movable frame assemblies matches the distance between the arc-shaped guide wheel groove block and the U-shaped guide wheel groove block.

[0011] Furthermore, the heights of the guide wheels mounted on the two moving frame assemblies can be adjusted by means of screw rods.

[0012] Furthermore, a magnet block is installed at the rear end of the transverse moving frame, and a magnet block is installed at the rear end of the longitudinal moving block, and the two magnet blocks attract each other when they are close to each other.

[0013] Furthermore, a tension spring is arranged between the transverse moving frame and the longitudinal moving block.

[0014] Furthermore, a handle is installed on the front side of the movable writing board.

[0015] Furthermore, the transverse movable frame and the upper frame are connected by a pulley movement, a slide rail is arranged on the upper frame, and a pulley matching the slide rail is installed on the transverse movable frame.

[0016] Furthermore, the longitudinal moving block and the transverse moving frame are connected by a pulley movement, the transverse moving frame is provided with a slide rail, and the longitudinal moving block is installed with a pulley matching therewith, or the longitudinal moving block is provided with a slide rail, and the transverse moving frame is installed with a pulley matching therewith.

[0017] Furthermore, the lower frame is symmetrical with the upper frame in structure, the lower frame is movably mounted with a movable frame assembly, the connection relationship between the movable frame assembly and the movable writing board is the same as that of the upper frame, and the overall structure of the writing board is symmetrical from top to bottom.

[0018] Compared with the prior art, the utility model has the following beneficial effects: a single guide wheel groove is used to realize the track change of the two mobile frame assemblies, which effectively reduces the width of the writing board frame, simplifies the structure of the frame, saves raw materials, and reduces costs. At the same time, the size of the writing board protruding from the wall becomes smaller, which improves the aesthetics and practicality of the writing board. In addition, the structure of the mobile frame assembly is unified, and the difference between the two mobile frame assemblies is only the length of the guide wheel connecting screw, and it is not easy to make mistakes in the processing and installation of parts. Finally, in this technical solution, the height of the guide wheel can be adjusted, and a long screw can be used instead of a short screw to achieve complete unification of parts, which brings great convenience to use and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the writing board.

[0020] Figure 2 Schematic diagram of the upper frame structure.

[0021] Figure 3 It is a schematic diagram of the coordination between the mobile frame assembly and the upper frame.

[0022] Figure 4 This is a schematic diagram of the long screw guide wheel structure.

[0023] Figure 5 It is a schematic diagram of the short screw guide wheel structure.

[0024] In the figure: 1. left side frame; 2. upper side frame; 3. arc-shaped guide wheel groove block; 4. moving frame assembly 1; 5. long screw; 6. adapter block 1; 7. U-shaped guide wheel groove block; 8. moving frame assembly 2; 9. short screw; 10. adapter block 2; 11. right side frame; 12. fixed writing board; 13. handle; 14. movable writing board; 15. lower side frame; 16. guide wheel 1; 17. guide wheel 2; 21. full-open gap; 22. gap; 23. straight guide wheel groove; 24. slide rail; 41. horizontal moving frame 1; 42. longitudinal moving block 1; 43. magnet block 1; 44. magnet block 2; 45. pulley; 81. horizontal moving frame 2; 82. longitudinal moving block 2; 83. magnet block 3; 84. magnet block 4. DETAILED DESCRIPTION

[0025] 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.

[0026] Please refer to the instruction manual Figure 1-Figure 5 As shown, a track-changing sliding writing board comprises a left side frame 1, an upper side frame 2, a right side frame 11, a lower side frame 15 and commonly used connecting accessories to form an overall frame of the track-changing sliding writing board, and a fixed writing board 12 is installed at the right end of the overall frame.

[0027] The upper frame 2 has a straight guide wheel groove 23 and a slide rail 24. The left end of the straight guide wheel groove 23 has a full-open notch 21 and a notch 22. The full-open notch 21 is on the left side of the notch 22, and the two are separated by a certain distance. The opening depth of the full-open notch 21 is consistent with the height of the straight guide wheel groove 23. The arc-shaped guide wheel groove block 3 is installed at the position of the full-open notch 21. The notch 22 is a half-open notch, and the depth of the notch 22 is about half of the height of the straight guide wheel groove 23. The U-shaped guide wheel groove block 7 is installed at the position of the notch 22.

[0028] The upper frame 2 is movably mounted with a moving frame assembly 14 and a moving frame assembly 28. The moving frame assembly 14 is mainly composed of a transverse moving frame 141, a longitudinal moving block 142, a magnet block 143, and a magnet block 24. Four pulleys 45 are installed on the transverse moving frame 141, and the pulleys 45 are matched in the slide rails 24 to realize the movable connection between the transverse moving frame 141 and the upper frame 2. The longitudinal moving block 142 is movably connected to the transverse moving frame 141 by means of pulleys, and the longitudinal moving block 142 can move longitudinally relative to the transverse moving frame 141. The rear end of the transverse moving frame 141 is mounted with a magnet block 143, and the rear end of the longitudinal moving block 142 is mounted with a magnet block 24. When the rear end of the transverse moving frame 141 and the rear end of the longitudinal moving block 142 are close to each other, the two magnet blocks attract each other.

[0029] The structure of the movable frame assembly 2 8 is the same as that of the movable frame assembly 1 4 .

[0030] The guide wheel 16 is installed on the longitudinal moving block 42 through the long screw 5, and the installation height can be adjusted. The guide wheel 16 is placed in the straight guide wheel groove 23, and the bottom surface is close to the bottom of the straight guide wheel groove 23. It can move horizontally along the straight guide wheel groove 23 and can be pushed into the arc-shaped guide wheel groove block 3. The guide wheel 16 cannot be pushed into the U-shaped guide wheel groove block 7 because its height is lower than the notch 22.

[0031] The guide wheel 2 17 is installed on the longitudinal moving block 2 82 on the movable frame assembly 2 8 through a short screw 9, and the installation height can be adjusted. The guide wheel 2 17 is placed in the straight guide wheel groove 23 and can move laterally along the straight guide wheel groove 23. The height of the guide wheel 2 17 is higher than the height of the notch 22, and can be pushed into the U-shaped guide wheel groove block 7 through the notch 22. It should be noted that the short screw 9 can be replaced with a long screw 5, and the functional requirements can be met by raising the guide wheel 2 17, but the screw will be exposed for a longer section, which may affect the aesthetics of the writing board.

[0032] The front end of the longitudinal moving block 1 42 is connected to the adapter block 1 6 in a hinged manner, and the two can rotate axially. The adapter block 1 6 is fixedly connected to the upper end surface of the movable writing board 14; the longitudinal moving block 2 82 is connected to the upper end surface of the movable writing board 14 through the adapter block 2 10 in the same manner. The movable writing board 14 is moved forward and backward by the longitudinal sliding of the longitudinal moving block 1 42 and the longitudinal moving block 2 82, and is moved left and right by the lateral sliding of the lateral moving frame 1 41 and the lateral moving frame 2 81. The connection position of the adapter block 1 6, the adapter block 2 10 and the movable writing board 14 is adjusted so that the lateral distance between the moving frame assembly 1 4 and the moving frame assembly 2 8 matches the lateral distance between the arc-shaped guide wheel groove block 3 and the U-shaped guide wheel groove block 7. When the guide wheel 1 16 is pushed into the end point of the arc-shaped guide wheel groove block 3, the guide wheel 2 17 is just at the entrance position of the U-shaped guide wheel groove block 7, and the gap distance between the movable writing board 14 and the fixed writing board 12 is small.

[0033] The structure of the lower frame 15 is horizontally symmetrical with that of the upper frame 2. Two movable frame assemblies are also installed on the lower frame 15. The structure and installation position of the movable frame assembly are horizontally symmetrical with those of the upper frame 2. The connection method between the movable frame assembly and the movable writing board 14 is the same as that of the upper frame 2.

[0034] A handle 13 is provided at the lower right end of the front side of the movable writing board 14 to facilitate the forward and backward pushing and pulling and left and right movement of the movable writing board 14 .

[0035] It should be noted that the movable connection between the transverse movable frame and the upper frame, and the movable connection between the longitudinal movable block and the transverse movable frame may adopt a slider or other methods in addition to the pulley method described in the embodiment.

[0036] In this embodiment, the magnet block combination on the movable frame assembly can be replaced by a tension spring, and a tension spring is arranged between the transverse movable frame and the longitudinal movable block. When the guide wheel 17 moves to the notch 22 position of the straight guide wheel groove 23, under the action of the tension spring, the guide wheel 17 is pulled into the U-shaped guide wheel groove block 7, thereby realizing the automatic backward movement of the movable writing board 14.

[0037] The working principle of the utility model is:

[0038] When the movable writing board 14 moves to the right end along with the movable frame assembly 14 and the movable frame assembly 28, the guide wheel 16 and the guide wheel 2 17 are both in the guide wheel groove 23, and the movable writing board 14 is located directly in front of the fixed writing board 12. The left side of the whole writing board is opened to expose the space, and multimedia teaching equipment, such as an integrated teaching machine, can be displayed. Push the movable writing board 14 to the left, and the movable frame assembly 14 and the movable frame assembly 28 move to the left along the slide rail 24. Due to the restriction of the guide wheel groove 23 on the guide wheel, the movable writing board 14 cannot move longitudinally. When the guide wheel 16 passes through the notch 22, it cannot be pushed into the U-shaped guide wheel groove block 7 because the height is below the notch 22. Continue to push the movable writing board 14 to the left, and the guide wheel 16 enters the arc-shaped guide wheel groove block 3, driving the longitudinal moving block 142 to move backward, and the left end of the movable writing board 14 moves backward accordingly. When the guide wheel 16 reaches the end of the arc groove, the movable frame assembly 14 stops moving to the left, the left end of the movable writing board 14 is close to the overall frame of the writing board, the magnet block 1 43 and the magnet block 2 44 attract each other, and the longitudinal position of the left end of the movable writing board 14 is fixed. At this time, the guide wheel 2 17 is located at the notch 22 of the guide wheel groove 23, pushing the right end of the movable writing board 14 backward, and the longitudinal moving block 2 82 drives the guide wheel 2 17 through the notch 22 and enters the U-shaped guide wheel groove block 7, the right end of the movable writing board 14 is close to the overall frame, the magnet block 3 83 and the magnet block 4 84 attract each other, the longitudinal position of the right end of the movable writing board 14 is fixed, the movable writing board 14 is in the same plane as the fixed writing board 12, and the whole set of writing boards is in a closed state.

[0039] The opening process is the opposite. Pull the handle 13 forward. Under the action of external force, the magnet block 3 83 and the magnet block 4 84 are separated, and the guide wheel 2 17 moves out of the U-shaped guide wheel groove block 7 and enters the guide wheel groove 23. The right side of the movable writing board 14 is pulled out and is in front of the fixed writing board 12. Push the movable writing board 14 to the right, and the guide wheel 1 16 moves out of the arc-shaped guide wheel groove block 3 and enters the guide wheel groove 23. The left end of the movable writing board 14 is also pulled out. Continue to push the movable writing board 14 to the right and move it to the front of the fixed writing board 12. The left side of the whole writing board is opened, revealing the multimedia teaching equipment.

[0040] It should be noted that the above is an embodiment of the fixed writing board being placed on the right. On the basis of this embodiment, improvements in application can be made. For example, the fixed writing board can be placed on the left, and the movable writing board can be placed on the right. The overall structure can be symmetrical in the vertical direction, and applied to the situation where the multimedia teaching equipment is installed on the right. The upper and lower frames can also be doubled in length, with a fixed writing board installed at each end, and two movable writing boards installed in the middle, which can be pushed and pulled to both sides to achieve a left-right track-changing push-pull method, which can be applied to the situation where the multimedia teaching equipment is installed in the middle. These should all be regarded as application improvements based on common sense of this embodiment, should belong to the same technical solution, and should all be included in the scope of protection of the present invention.

Claims

1. A track-changing push-pull writing board, comprising a left side frame (1), a right side frame (11), an upper frame (2), a lower frame (15), a fixed writing board (12), a movable writing board (14), and a movable frame assembly (4, 8), characterized in that: The upper frame (2) is provided with a straight guide wheel groove (23) arranged in the transverse direction of the writing board, and a notch (22) is formed on one side of the straight guide wheel groove (23), and a U-shaped guide wheel groove block (7) is installed at the position of the notch; the movable frame assembly (4, 8) comprises a transverse movable frame (41, 81) and a longitudinal movable block (42, 82), which are movably connected and move longitudinally relative to each other; the transverse movable frame (41, 81) is movably connected to the upper frame (2), and the transverse movable frame (41, 81) moves transversely along the upper frame (2); guide wheels (16, 17) are installed on the longitudinal movable blocks (42, 82), and the guide wheels (16, 17) are located in the straight guide wheel groove (23) and can enter the U-shaped guide wheel groove block (7) through the notch (22); the movable writing board (14) is connected to the longitudinal movable block (42, 82) and can move longitudinally along with the longitudinal movable block (42, 82).

2. The track-changing push-pull writing board according to claim 1, characterized in that: The movable writing board (14) and the longitudinal moving blocks (42, 82) are connected by means of a transfer block (6, 10); the transfer block (6, 10) and the longitudinal moving blocks (42, 82) are connected in an articulated manner; and the transfer block (6, 10) and the movable writing board (14) are fixedly connected.

3. The track-changing push-pull writing board according to claim 2, characterized in that: The notch (22) is a half-open notch, and the depth of the half-open notch is half the height of the straight guide wheel groove (23).

4. The track-changing push-pull writing board according to claim 3, characterized in that: A fully open notch (21) is formed on one end of the straight guide wheel groove (23) away from the fixed writing board (12); the fully open notch (21) and the half-open notch are on the same side; the depth of the fully open notch (21) is consistent with the height of the straight guide wheel groove (23); an arc-shaped guide wheel groove block (3) is installed at the position of the fully open notch (21); and the guide wheels (16, 17) can enter the arc-shaped guide wheel groove block (3) through the fully open notch (21).

5. The track-changing push-pull writing board according to claim 4, characterized in that: The number of the movable frame assemblies (4, 8) is two. The movable frame assembly (4, 8) far from the fixed writing board (12) is installed with guide wheels (16, 17) via a long screw (5), and the guide wheels (16, 17) are close to the bottom of the straight guide wheel groove (23); the movable frame assembly (4, 8) close to the fixed writing board (12) is installed with guide wheels (16, 17) via a short screw (9), and the installation height of the guide wheels (16, 17) is such that the guide wheels (16, 17) can pass through the half-open gap; the distance between the two movable frame assemblies (4, 8) matches the distance between the arc-shaped guide wheel groove block (3) and the U-shaped guide wheel groove block (7).

6. The track-changing push-pull writing board according to claim 5, characterized in that: The heights of the guide wheels (16, 17) mounted on the two moving frame assemblies (4, 8) are adjustable.

7. A track-changing push-pull writing board according to any one of claims 1 to 6, characterized in that: The handle (13) is installed correspondingly on the front side of the movable writing board (14).

8. The track-changing push-pull writing board according to claim 7, characterized in that: A magnet block is installed at the rear end of the transverse moving frame (41, 81), and a magnet block is installed at the rear end of the longitudinal moving block (42, 82), and the two magnet blocks attract each other when approaching each other.

9. The track-changing push-pull writing board according to claim 7, characterized in that: A tension spring is arranged between the transverse moving frame (41, 81) and the longitudinal moving block (42, 82).

10. The track-changing push-pull writing board according to claim 8, characterized in that: The lower frame (15) and the upper frame (2) are symmetrical in structure. The lower frame (15) is used to movably mount the movable frame assembly (4, 8). The connection relationship between the movable frame assembly (4, 8) and the movable writing board (14) is the same as that of the upper frame (2).

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