Writing blackboard convenient to assemble
The flexible writing board with automatic and manual roll mechanisms addresses the bulkiness and limited space issues of traditional blackboards, offering easy folding, enhanced writing area, and stable support for outdoor teaching.
Patent Information
- Application Number
- CN202421411449.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Most of the existing outdoor teaching writing blackboards are hard board structures, which occupy a large area, is inconvenient for folding and storage, is inconvenient to carry, and is limited in writing range, which is inconvenient to use.
The design of flexible writing board and load-bearing mesh board is adopted, combined with automatic and manual winding frames, and the flexible writing board is stable and conveniently deployed and stored by tensioning and adjusting structures and supporting leg sets. The combination of automatic winding and manual winding expands the writing area, improving portability and convenience of use.
It realizes the convenient storage of flexible writing boards and expands the writing area, improves the portability and convenience of outdoor teaching, and enhances the bearing capacity and stability during writing.
Smart Images
Figure CN223100341U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of writing blackboards, and more specifically, it relates to a writing blackboard that is convenient to assemble. Background Art
[0002] When teaching outdoors, it is necessary to carry a writing blackboard for teaching. Most of the existing writing blackboards are in a hard plate structure and are supported and fixed with brackets. They occupy a large space and are not convenient to fold and carry. Therefore, when teaching outdoors, the convenience of storage and carrying is poor.
[0003] In addition, for the writing blackboard with a hard plate structure in the prior art, its writing range is limited, and it is necessary to repeatedly erase and clean the writing content, which is not convenient for subsequent summary and observation, etc. Summary of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] Aiming at the problems existing in the prior art, the utility model provides a writing blackboard that is convenient to assemble, so as to solve the technical problems mentioned in the background art that most of the existing writing blackboards are in a hard plate structure, not convenient to fold and store, with poor portability, limited writing range, and inconvenient use.
[0006] (II) Technical Solutions
[0007] To achieve the above object, the utility model provides the following technical solution: a writing blackboard that is convenient to assemble, including a flexible writing board. One end of the flexible writing board is provided with a first automatic winding rack, and the other end is provided with a manual winding rack. A bearing mesh board is arranged behind the flexible writing board. The bottom end of the bearing mesh board is provided with a fixing rack, and the top end is provided with a second automatic winding rack. Both ends of the fixing rack and the second automatic winding rack are respectively clamped and fixed between the first automatic winding rack and the manual winding rack. Tension adjusting structures are arranged at the top ends of the first automatic winding rack and the manual winding rack in cooperation with the second automatic winding rack. The bottom ends of the first automatic winding rack and the manual winding rack are clamped and provided with a mounting rack. Folding support leg groups are symmetrically arranged at the bottom end of the mounting rack.
[0008] The utility model is further arranged such that a first limiting hinge rack is arranged at the bottom end of the mounting rack. A second limiting hinge rack is limited and hinged on the first limiting hinge rack. Two groups of support leg racks are symmetrically hinged and installed on the second limiting hinge rack. A foldable limiting structure is arranged between the two groups of support leg racks, which is convenient for folding and storing the support legs.
[0009] The present utility model is further configured such that the limiting structure includes limiting rods hinged to each of the support legs, the ends of the two groups of limiting rods are rotatably hinged to each other, and a limiting frame is arranged on one limiting rod in cooperation with the other limiting rod, so as to improve the limiting stability when the support leg frame is unfolded.
[0010] The present utility model is further configured such that the tensioning and adjusting structure includes adjusting grooves opened at the tops of the first automatic winding frame and the manual winding frame, an adjusting slider is slidably arranged in the adjusting groove, and an adjusting screw rod is installed in the adjusting groove through a bearing. The adjusting slider is threadedly sleeved on the adjusting screw rod, and the second automatic winding frame is snap-fitted and fixed between the two groups of adjusting sliders. The movement adjustment of the second automatic winding frame can be realized through the cooperation of the adjusting groove, the adjusting slider and the adjusting screw rod, so as to realize the tensioning adjustment of the bearing mesh plate during use.
[0011] The present utility model is further configured such that engaging blocks are arranged at both ends of the fixed frame and the second automatic winding frame, and engaging grooves are respectively and correspondingly opened at the bottom end of the manual winding frame, the bottom end of the first automatic winding frame and the adjusting slider. The snap-fitting installation of the fixed frame and the second automatic winding frame is realized through the cooperation of the engaging groove and the engaging block.
[0012] The present utility model is further configured such that automatic winding cavities are respectively opened inside the first automatic winding frame and the second automatic winding frame, an installation shaft is installed in the automatic winding cavity, an automatic winding shaft is rotatably installed on the installation shaft through a bearing, a torsion spring is arranged between the winding shaft and the installation shaft, and the flexible writing board and the bearing mesh plate can be respectively wound around the corresponding automatic winding shafts to realize automatic winding.
[0013] The present utility model is further configured such that a manual winding cavity is opened inside the manual winding frame, a manual winding shaft is installed in the manual winding cavity, a damping gasket is arranged between the connection of the manual winding shaft and the manual winding frame, and one end of the flexible writing board away from the automatic winding shaft is wound around the manual winding shaft to realize stable manual winding adjustment.
[0014] The present utility model is further configured such that an installation block is arranged at the top end of the installation frame, and installation grooves are respectively and correspondingly opened at the bottom ends of the manual winding frame and the first automatic winding frame. The stable installation of the whole on the installation frame can be realized through the cooperation of the installation block and the installation groove.
[0015] The present utility model is further configured such that adjusting knobs are arranged at the bottom end of the manual winding shaft and the top end of the adjusting screw rod, which is convenient for the rotational adjustment of the manual winding shaft and the adjusting screw rod.
[0016] (III) Beneficial effects
[0017] Compared with the prior art, the utility model provides a writing blackboard which is convenient for assembly and has the following beneficial effects:
[0018] 1. The utility model includes a flexible writing board. A first automatic winding rack is arranged at one end of the flexible writing board, and a manual winding rack is arranged at the other end. In this way, the use of the flexible writing board material facilitates the overall winding. The cooperation with the manual winding rack and the automatic winding rack can flexibly realize the winding of the flexible writing board, thus facilitating the overall storage and carrying. Moreover, by adopting the winding method, the writing area can be enlarged, improving the use convenience.
[0019] 2. The utility model is provided with a bearing mesh board behind the flexible writing board. The bearing mesh board is placed behind the flexible writing board and is used for supporting the flexible writing board during writing. A fixing frame is arranged at the bottom end of the bearing mesh board, and a second automatic winding rack is arranged at the top end. The cooperation of the fixing frame and the second automatic winding rack can realize the automatic winding of the bearing mesh board after use, thus facilitating the storage of the bearing mesh board and improving the portability.
[0020] 3. In the utility model, both ends of the fixing frame and the second automatic winding rack are respectively clamped and fixed between the first automatic winding rack and the manual winding rack, so as to realize the stable installation of the bearing mesh board behind the flexible writing board. At the same time, the stable unfolding of the flexible writing board can be realized, achieving the stable assembly of the whole.
[0021] 4. In the utility model, tension adjusting structures are arranged at the tops of the first automatic winding rack and the manual winding rack in cooperation with the second automatic winding rack. In this way, the tension of the bearing mesh board during use can be realized, improving the overall support strength and hardness, and enhancing the bearing capacity of the flexible writing board during writing.
[0022] 5. An installation rack is clamped and arranged at the bottom ends of the first automatic winding rack and the manual winding rack. Symmetric and foldable support leg groups are arranged at the bottom end of the installation rack. In this way, it is convenient for the overall stable support, and at the same time, it is convenient for the overall folding and storage, improving the overall portability. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic diagram of the overall structure of a writing blackboard which is convenient for assembly in the utility model;
[0024] Figure 2 is an exploded schematic diagram of the overall structure of the utility model;
[0025] Figure 3 is a schematic cross-sectional view of the flexible writing board in the unfolded state in the utility model;
[0026] Figure 4 is a schematic cross-sectional view of the connection structure between the bearing mesh board and the second automatic winding rack in the utility model;
[0027] Figure 5 For the present utility model Figure 1 is a partial enlarged view of the structure of A in this;
[0028] Figure 6 For the present utility model Figure 1 is a partial enlarged view of the structure of B in this;
[0029] Figure 7 For the present utility model Figure 3 is a partial enlarged view of the structure of C in this.
[0030] In the figure: 1. Flexible writing board; 2. First automatic winding rack; 3. Manual winding rack; 4. Bearing mesh board; 5. Fixed rack; 6. Second automatic winding rack; 7. Tension adjusting structure; 8. Mounting rack; 9. Support leg group; 10. First limit hinge rack; 11. Second limit hinge rack; 12. Support leg rack; 13. Limit rod; 14. Limit rack; 15. Adjusting groove; 16. Adjusting slider; 17. Adjusting screw; 18. Engaging block; 19. Engaging groove; 20. Automatic winding cavity; 21. Mounting shaft; 22. Automatic winding shaft; 23. Torsion spring; 24. Manual winding cavity; 25. Manual winding shaft; 26. Damping gasket; 27. Mounting block; 28. Mounting groove; 29. Adjusting knob. Detailed implementation manners
[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0032] It should be pointed out that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.
[0033] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually with respect to the left and right shown in the drawings; "inside, outside" refer to the inside and outside with respect to the contours of the respective components, but the above orientation terms are not used to limit the present utility model.
[0034] Please refer to Figure 1-7 , a writing blackboard convenient for assembly, including a flexible writing board 1, a first automatic winding rack 2 is arranged at one end of the flexible writing board 1, and a manual winding rack 3 is arranged at the other end. In this way, the use of the flexible writing board 1 material facilitates the overall winding, and the cooperation with the manual winding rack 3 and the automatic winding rack can flexibly realize the winding of the flexible writing board 1, thereby facilitating the overall storage and carrying;
[0035] A load-bearing mesh plate 4 is arranged behind the flexible writing board 1 of the utility model. The load-bearing mesh plate 4 is placed behind the flexible writing board 1 and is used for supporting the flexible writing board 1 during writing. A fixing frame 5 is arranged at the bottom end of the load-bearing mesh plate 4, and a second automatic rewinding frame 6 is arranged at the top end. The cooperation of the fixing frame 5 and the second automatic rewinding frame 6 can realize the automatic rewinding of the load-bearing mesh plate 4 after use, so as to facilitate the storage of the load-bearing mesh plate 4 and improve portability.
[0036] In the utility model, both ends of the fixing frame 5 and the second automatic rewinding frame 6 are respectively clamped and fixed between the first automatic rewinding frame 2 and the manual rewinding frame 3, so as to realize the stable installation of the load-bearing mesh plate 4 behind the flexible writing board 1. At the same time, the flexible writing board 1 can be stably unfolded to realize the stable assembly of the whole;
[0037] In the utility model, tension adjusting structures 7 are arranged at the tops of the first automatic rewinding frame 2 and the manual rewinding frame 3 in cooperation with the second automatic rewinding frame 6. Among them, the tension adjusting structure 7 includes adjusting grooves 15 opened at the tops of the first automatic rewinding frame 2 and the manual rewinding frame 3. An adjusting slider 16 is slidably arranged in the adjusting groove 15, and an adjusting screw rod 17 is installed in the adjusting groove 15 through a bearing. The adjusting slider 16 is threadedly sleeved on the adjusting screw rod 17, and the second automatic rewinding frame 6 is clamped and fixed between two groups of adjusting sliders 16;
[0038] Clamping blocks 18 are arranged at both ends of the fixing frame 5 and the second automatic rewinding frame 6. Clamping grooves 19 are respectively formed in cooperation with the bottom end of the manual rewinding frame 3, the bottom end of the first automatic rewinding frame 2 and the adjusting slider 16;
[0039] In this way, when installing the load-bearing mesh plate 4, the clamping blocks 18 on both sides of the fixing frame 5 and the second automatic rewinding frame 6 are respectively clamped and fixed in the corresponding clamping grooves 19 to realize the stable installation of the load-bearing mesh plate 4 behind the flexible writing board 1. Then, tightly screw the adjusting screw rod 17, and control the movement of the adjusting slider 16 in the adjusting chute through the rotation of the adjusting screw rod 17. Thus, the movement of the second automatic rewinding frame 6 can be controlled through the movement of the adjusting slider 16, and the pulling of the load-bearing mesh plate 4 can be realized to realize the tensioning of the load-bearing mesh plate 4 and improve the bearing capacity of the load-bearing mesh plate 4. Here, after the load-bearing mesh plate 4 is fully unfolded, its vertical length matches that of the flexible writing board 1.
[0040] At the bottom of the first automatic winding rack 2 and the manual winding rack 3 of the present utility model, an installation rack 8 is snap-fitted. At the bottom of the installation rack 8, a support leg group 9 is symmetrically and foldably arranged. Among them, at the bottom of the installation rack 8, a first limit hinge rack 10 is provided. A second limit hinge rack 11 is limit-hinged on the first limit hinge rack 10. Two groups of support leg racks 12 are symmetrically hinged and installed on the second limit hinge rack 11. A foldable limit structure is arranged between the two groups of support leg racks 12; the limit structure includes limit rods 13 hinged on each support leg. The tails of the two groups of limit rods 13 are rotationally hinged. And a limit frame 14 is arranged on one limit rod 13 in cooperation with the other limit rod 13. Here, the rotation direction of the second limit hinge rack 11 on the first limit hinge rack 10 is perpendicular to the rotation direction of the support leg rack 12 on the second limit hinge rack 11.
[0041] In this way, the manual winding rack 3 and the first automatic winding rack 2 can be respectively installed on the installation rack 8 to achieve stable installation of the flexible writing board 1 during use. After that, the two groups of support leg racks 12 are respectively unfolded outward under the action of the second limit hinge rack 11. Then, the corresponding support leg racks 12 are respectively unfolded to both sides, so as to achieve stable support of the flexible writing board 1.
[0042] Please refer to Figure 1 - Figure 7 , as an implementation manner of the first automatic winding rack 2 and the second automatic winding rack 6: Automatic winding cavities 20 are respectively opened inside the first automatic winding rack 2 and the second automatic winding rack 6. An installation shaft 21 is installed in the automatic winding cavity 20. An automatic winding shaft 22 is rotatably installed on the installation shaft 21 through a bearing. A coil spring 23 is arranged between the winding shaft and the installation shaft 21. And the flexible writing board 1 and the bearing mesh plate 4 can be respectively wound on the corresponding automatic winding shafts 22.
[0043] Specifically, when the flexible writing board 1 and the bearing mesh plate 4 are unfolded, they will drive the self-feeding winding shaft to rotate. Through the rotation of the automatic winding shaft 22, the rotation of the coil spring 23 will be driven. Furthermore, after the flexible writing board 1 and the bearing mesh plate 4 are used up and the external restrictive force is removed, under the action of the coil spring 23, the automatic winding shaft 22 will be controlled to automatically wind back, so as to realize the automatic winding of the flexible writing board 1 and the bearing mesh plate 4 and improve the use convenience.
[0044] Please refer to Figure 1 - Figure 7 , as an implementation manner of the manual winding rack 3: A manual winding cavity 24 is opened inside the manual winding rack 3. A manual winding shaft 25 is installed in the manual winding cavity 24. A damping gasket 26 is arranged between the connection of the manual winding shaft 25 and the manual winding rack 3. One end of the flexible writing board 1 away from the automatic winding shaft 22 is wound on the manual winding shaft 25.
[0045] Specifically, during use, when it is necessary to adjust the writing position of the flexible writing board 1, rotate the manual winding shaft 25. By rotating the manual winding shaft 25, the rotation of the flexible writing board 1 wound around the manual winding shaft 25 can be controlled, thereby realizing the adjustment of the writing position. Here, the damping force of the damping gasket 26 on the manual winding shaft 25 is greater than the return spring force of the coil spring 23, so that after the adjustment is completed, automatic fixation can be achieved. In this way, the writing area can be greatly enlarged and the use flexibility can be improved.
[0046] Please refer to Figure 1 - Figure 7 , as an implementation manner of the mounting frame 8: An installation block 27 is provided at the top of the mounting frame 8, and mounting grooves 28 are respectively and cooperatively formed at the bottoms of the manual winding frame 3 and the first automatic winding frame 2.
[0047] Specifically, through the cooperation of the installation block 27 and the installation groove 28, the convenient and stable installation of the manual winding frame 3 and the second automatic winding frame 6 on the mounting frame 8 can be realized, which is convenient for the overall assembly and disassembly.
[0048] Please refer to Figure 1 - Figure 7 , as an implementation manner of the manual winding shaft 25 and the adjusting screw 17: Adjusting knobs 29 are provided at the bottom end of the manual winding shaft 25 and the top end of the adjusting screw 17.
[0049] Specifically, through the setting of the adjusting knob 29, the convenience of rotating and adjusting the manual winding shaft 25 and the adjusting screw 17 can be improved.
[0050] In summary, when the overall device is in use:
[0051] First, unfold the bearing mesh plate 4, and make the engaging block 18 on the fixing frame 5 at the bottom end of the bearing mesh plate 4 engage in the corresponding engaging grooves 19 on the manual winding frame 3 and the first automatic winding frame 2. Then, engage the engaging block 18 on the second automatic winding frame 6 into the engaging groove 19 on the adjusting slider 16;
[0052] Here, the up and down mounting positions of the fixing frame 5 and the second automatic winding frame 6 can be automatically swapped;
[0053] Thereby, the flexible writing board 1 can be stably unfolded. Then, rotate the adjusting screw 17 to control the adjusting slider 16 to move upward in the adjusting chute. Through the limiting engagement relationship between the engaging groove 19 on the adjusting slider 16 and the engaging block 18 on the second automatic winding frame 6, the second automatic winding frame 6 can be controlled to move upward, so that the unfolded bearing mesh plate 4 is tensioned, the bearing capacity of the flexible writing board 1 during writing is improved, and the use stability is improved;
[0054] Afterwards, the two groups of support leg frames 12 at the bottom of the mounting frame 8 are respectively unfolded outward under the action of the second limit hinge frame 11, and then the corresponding support leg frames 12 are respectively unfolded outward to both sides on the second limit hinge frame 11, so that the flexible writing board 1 can be stably supported, and the expansion limit between the two groups of support leg frames 12 is achieved through the cooperation of the limit rod 13 and the limit frame 14, so as to achieve stable support of the mounting frame 8;
[0055] Here, under the action of the first position-limiting articulated frame 10, the two sets of support leg frames 12 are tilted outward after being unfolded, so that the overall support stability can be improved;
[0056] Afterwards, the mounting grooves 28 at the bottom ends of the manual winding frame 3 and the automatic winding frame are engaged and fixed on the mounting block 27 at the top end of the mounting frame 8 , thereby achieving stable installation of the flexible writing board 1 and the supporting mesh plate 4 on the mounting frame 8 .
[0057] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;
[0058] In all the schemes mentioned above, those involving the operation of electrical components are controlled by the controller unless otherwise clearly described. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.
Claims
1. A writing blackboard convenient for assembly, comprising a flexible writing board (1), characterized in that: One end of the flexible writing board (1) is provided with a first automatic winding rack (2), and the other end is provided with a manual winding rack (3). A bearing mesh board (4) is arranged behind the flexible writing board (1). A fixing frame (5) is arranged at the bottom end of the bearing mesh board (4), and a second automatic winding rack (6) is arranged at the top end. Both ends of the fixing frame (5) and the second automatic winding rack (6) are respectively clamped and fixed between the first automatic winding rack (2) and the manual winding rack (3). Tension adjusting structures (7) are arranged at the tops of the first automatic winding rack (2) and the manual winding rack (3) in cooperation with the second automatic winding rack (6). Mounting frames (8) are clamped at the bottom ends of the first automatic winding rack (2) and the manual winding rack (3). Support leg groups (9) are symmetrically and foldably arranged at the bottom end of the mounting frame (8).
2. The writing blackboard convenient for assembly according to claim 1, characterized in that: A first limit hinge frame (10) is arranged at the bottom end of the mounting frame (8). A second limit hinge frame (11) is limit-hinged on the first limit hinge frame (10). Two groups of support leg frames (12) are symmetrically hinged and installed on the second limit hinge frame (11). A foldable limit structure is arranged between the two groups of support leg frames (12).
3. The writing blackboard that is easy to assemble according to claim 2 is characterized in that: The limit structure includes limit rods (13) hinged on each support leg. The tails of the two groups of limit rods (13) are rotatably hinged, and a limit frame (14) is arranged on one limit rod (13) in cooperation with the other limit rod (13).
4. The writing blackboard convenient for assembly according to claim 1, characterized in that: The tension adjusting structure (7) includes adjusting grooves (15) opened at the tops of the first automatic winding rack (2) and the manual winding rack (3). Adjusting sliders (16) are slidably arranged in the adjusting grooves (15). An adjusting screw rod (17) is installed in the adjusting grooves (15) through bearings. The adjusting sliders (16) are thread sleeved on the adjusting screw rod (17). The second automatic winding rack (6) is clamped and fixed between the two groups of adjusting sliders (16).
5. The writing blackboard convenient for assembly according to claim 4 is characterized in that: Clamping blocks (18) are arranged at both ends of the fixing frame (5) and the second automatic winding rack (6). Clamping grooves (19) are cooperatively opened at the bottom end of the manual winding rack (3), the bottom end of the first automatic winding rack (2), and the adjusting sliders (16).
6. The writing blackboard convenient for assembly according to claim 4, characterized in that: Automatic winding cavities (20) are respectively opened inside the first automatic winding rack (2) and the second automatic winding rack (6). Mounting shafts (21) are installed in the automatic winding cavities (20). Automatic winding shafts (22) are rotatably installed on the mounting shafts (21) through bearings. A coil spring (23) is arranged between the automatic winding shafts (22) and the mounting shafts (21). The flexible writing board (1) and the bearing mesh board (4) can be respectively wound around the corresponding automatic winding shafts (22).
7. The writing blackboard easy to assemble according to claim 6, characterized in that: A manual winding frame (3) is internally provided with a manual winding cavity (24), a manual winding shaft (25) is installed in the manual winding cavity (24), a damping gasket (26) is arranged between the connection part of the manual winding shaft (25) and the manual winding frame (3), and one end of the flexible writing board (1) far away from the automatic winding shaft (22) is wound around the manual winding shaft (25).
8. The writable blackboard convenient for assembly according to claim 4, characterized in that: An installation block (27) is arranged at the top end of the installation frame (8), and installation grooves (28) are cooperatively opened at the bottom ends of the manual winding frame (3) and the first automatic winding frame (2).
9. The writing blackboard convenient for assembly according to claim 7 is characterized in that: Adjusting knobs (29) are arranged at the bottom end of the manual winding shaft (25) and the top end of the adjusting screw rod (17).