Sliding blackboard
By replacing the T-slide with a U-hook-like guide plate in the push-pull blackboard, the problem of insufficient load-bearing capacity of the T-slide is solved, and a smaller volume, lower cost and better load-bearing capacity is achieved.
Patent Information
- Application Number
- CN202420754766.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In the existing push and pull blackboard, the bearing capacity of the T-shaped slider is limited by the thickness of the wing plate, resulting in larger volume, more consumables, and high production costs.
A U-shaped hook-like guide plate is used instead of the T-shaped slider, and slides through the hooking and hanging of the guide rail and the guide plate, reducing the thickness in the direction of force and improving the load-bearing capacity.
The bearing capacity of the guide plate is improved, the volume and consumables are reduced, and the production cost is reduced.
Smart Images
Figure CN222698176U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of educational tools, and in particular relates to a push-pull blackboard. Background Art
[0002] Existing push-pull blackboards usually achieve sliding by setting rollers on the upper and lower sides of the sliding plate. There is rolling friction between the sliding plate and the outer frame, which has low friction but high cost. In order to reduce costs, the applicant has developed a push-pull blackboard that uses a T-shaped slider to replace the original rollers. However, it was found that there are still some problems in production and actual production: when working, the thickness of the T-shaped slider wing in the force direction is an important factor affecting the bearing capacity of the T-shaped slider. In order to ensure that the T-shaped slider has sufficient bearing capacity and avoid deformation of the T-shaped slider, the thickness of the T-shaped slider wing can only be increased, which ultimately leads to a larger T-shaped slider, more consumables, and still high production costs. Utility Model Content
[0003] The utility model provides a push-pull blackboard, aiming to solve the technical problems raised in the above background technology.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: to provide a push-pull blackboard, including:
[0005] The outer frame is suitable for connecting with a bracket arranged on a vertical wall of a teaching site, and comprises an upper frame and a lower frame arranged parallel to and spaced from the upper frame;
[0006] A fixing plate, fixed in the outer frame and located between the upper frame and the lower frame;
[0007] There is at least one sliding plate, each of which is slidably disposed on the upper frame or the lower frame, and the sliding plate is parallel to and spaced from the fixed plate along the normal direction of the vertical wall;
[0008] Wherein, transverse guide rails are provided in the upper frame and the lower frame, and guide plates are provided on the upper and lower sides of the sliding plate respectively, and the guide plates on the sliding plate are slidably matched with the guide rails; the guide rail is a U-shaped hook structure opened toward the side away from the sliding plate, and the guide plate is a U-shaped hook structure opened toward the side of the sliding plate, and the guide rail and the guide plate are hooked with each other.
[0009] In a possible implementation of the push-pull blackboard provided by the utility model, vertically extending strip-shaped protrusions are provided on both side walls on the inner side of the guide rail.
[0010] In a possible implementation of the push-pull blackboard provided by the utility model, an upper side of the upper frame and a lower side of the lower frame are both provided with a receiving groove, and the receiving groove is used to receive the bracket.
[0011] In a possible implementation of the push-pull blackboard provided by the utility model, the bottom of the guide rail and the guide plate are both arc-shaped structures, and the diameter of the bottom arc structure of the guide rail is larger than the diameter of the end arc structure of the guide plate.
[0012] In a possible implementation of the push-pull blackboard provided by the utility model, it also includes a support plate, which is connected to the lower frame and is provided with a stop edge, and the interior of the support plate is used to place items.
[0013] In a possible implementation of the push-pull blackboard provided by the utility model, it also includes a storage box, which is arranged on the lower side of the support plate and connected to the support plate. The support plate is provided with a plurality of storage openings connected to the storage box.
[0014] In a possible implementation of the push-pull blackboard provided by the utility model, the storage box, the support plate and the lower frame are integrally formed.
[0015] The beneficial effects of the push-pull blackboard provided by the utility model are as follows: compared with the prior art, the push-pull blackboard provided by the utility model uses a guide plate with a U-shaped hook structure instead of a T-shaped slider. When in use, the thickness of the guide plate with the U-shaped hook structure in the force direction is the vertical plate of the U-shaped hook structure, so the load-bearing capacity is better, the volume is small, the consumables are small, and the production cost is lower than that of the T-shaped slider. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a partial structural diagram of an existing push-pull blackboard;
[0017] Figure 2 A schematic diagram of the three-dimensional structure of a push-pull blackboard provided in an embodiment of the utility model;
[0018] Figure 3 A schematic diagram of the main structure of a push-pull blackboard provided by an embodiment of the utility model;
[0019] Figure 4 For along Figure 3 The cross-sectional structure diagram along the AA line;
[0020] Figure 5 for Figure 2 A magnified view of part A in FIG.
[0021] Figure 6 for Figure 4 A magnified view of part B in FIG.
[0022] Figure 7 for Figure 4 The enlarged view of the C part in FIG.
[0023] Description of reference numerals:
[0024] 11. Upper frame; 12. Lower frame; 13. Guide rail; 14. Accommodation slot;
[0025] 15. Strip-shaped protrusion; 21. Fixed plate; 22. Sliding plate; 23. Guide plate;
[0026] 31. Support plate; 32. Storage opening; 33. Storage box; 40. T-shaped slider. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0031] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.
[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0034] Please also read Figures 2 to 7Now, the push-pull blackboard provided by the utility model is described. The push-pull blackboard includes an outer frame, a fixed plate 21 and a sliding plate 22, which is suitable for connecting with a bracket set on a vertical wall of a teaching site, and has an upper frame 11 and a lower frame 12 parallel to and spaced from the upper frame 11; the fixed plate 21 is fixed in the outer frame and located between the upper frame 11 and the lower frame 12; at least one sliding plate 22 is provided, and the sliding plate 22 is slidably set on the upper frame 11 or the lower frame 12, and the sliding plate 22 is parallel to and spaced from the fixed plate 21 along the normal direction of the vertical wall.
[0035] Among them, a horizontal guide rail 13 is provided in the upper frame 11 and the lower frame 12, and a guide plate 23 is provided on the upper and lower sides of the sliding plate 22 respectively, and the guide plate 23 on the sliding plate 22 slides with the guide rail 13; the guide rail 13 is a U-shaped hook structure opened toward the side facing away from the sliding plate 22, and the guide plate 23 is a U-shaped hook structure opened toward the side of the sliding plate 22, and the guide rail 13 and the guide plate 23 are hooked with each other.
[0036] The beneficial effects of the push-pull blackboard provided by the embodiment of the utility model are as follows: compared with the prior art, the push-pull blackboard provided by the embodiment of the utility model uses a guide plate 23 with a U-shaped hook structure instead of a T-shaped slider 40. When in use, the guide plate 23 with the U-shaped hook structure has a thickness in the force direction of the vertical plate of the U-shaped hook structure, has better load-bearing capacity, is small in size, requires less consumables, and has a lower production cost than the T-shaped slider 40.
[0037] like Figure 6 and Figure 7 As shown, in a specific implementation of the push-pull blackboard provided by the embodiment of the utility model, vertically extending strip protrusions 15 are provided on both side walls on the inner side of the guide rail 13 to reduce the friction force received by the side of the guide plate 23.
[0038] like Figure 6 and Figure 7 As shown, in a specific implementation of the push-pull blackboard provided by the embodiment of the utility model, the upper side of the upper frame 11 and the lower side of the lower frame 12 are both provided with a receiving groove 14, and the receiving groove 14 is used to receive the bracket.
[0039] It should be noted that after the blackboard is mounted on the wall, the bracket is placed in the receiving groove 14, so that when the blackboard is viewed from the front, the upper frame 11 and the lower frame 12 can cover the bracket, making it more beautiful.
[0040] like Figure 6 and Figure 7As shown, in a specific implementation of the push-pull blackboard provided by the embodiment of the utility model, the bottom of the guide rail 13 and the guide plate 23 are both arc-shaped structures, and the diameter of the bottom arc structure of the guide rail 13 is larger than the diameter of the end arc structure of the guide plate 23. The contact area between the guide plate 23 and the guide rail 13 is reduced.
[0041] like Figure 2 and Figure 5 As shown, in a specific implementation of the push-pull blackboard provided in an embodiment of the utility model, it also includes a support plate 31, which is connected to the lower frame 12. The support plate 31 is provided with a stop edge, and the interior is used to place items.
[0042] Further, such as Figure 4 As shown, in a specific implementation of the push-pull blackboard provided in an embodiment of the utility model, it also includes a storage box 33, which is arranged on the lower side of the support plate 31 and connected to the support plate 31. The support plate 31 is provided with a plurality of storage openings 32 connected to the storage box 33.
[0043] It should be noted that existing blackboards usually use a board tray to achieve the storage function, and the tray 31 is prone to accumulation of pen powder. In order to reduce the accumulation of pen powder and facilitate cleaning, the tray 31 is usually narrower and shallower, which results in poor storage capacity of the tray 31 and a small storage volume.
[0044] To this end, a support plate 31 with a stop edge is provided to place a single piece of chalk or smaller sundries. At the same time, a storage box 33 is provided at the lower side of the support plate 31, and a storage opening 32 connected to the storage box 33 is provided on the support plate 31. In this way, larger items such as boxes of chalk and erasers can be placed in the storage opening 32 and supported by the storage box 33, thereby greatly improving the storage capacity. At the same time, during normal use, the storage opening 32 can block most of the storage opening 32 by placing boxes of chalk and erasers in the storage opening 32, thereby reducing the amount of chalk entering the storage box 33.
[0045] like Figure 5 As shown, in a specific implementation of the push-pull blackboard provided by the embodiment of the utility model, the storage box 33, the support plate 31 and the lower frame 12 are integrally formed to ensure structural strength, simplify production steps and improve production efficiency.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sliding blackboard, characterized in that: include: The outer frame is suitable for connecting with a bracket arranged on a vertical wall of a teaching site, and comprises an upper frame and a lower frame arranged parallel to and spaced from the upper frame; A fixing plate, fixed in the outer frame and located between the upper frame and the lower frame; There is at least one sliding plate, each of which is slidably disposed on the upper frame or the lower frame, and the sliding plate is parallel to and spaced from the fixed plate along the normal direction of the vertical wall; Wherein, transverse guide rails are provided in the upper frame and the lower frame, and guide plates are provided on the upper and lower sides of the sliding plate respectively, and the guide plates on the sliding plate are slidably matched with the guide rails; the guide rail is a U-shaped hook structure opened toward the side away from the sliding plate, and the guide plate is a U-shaped hook structure opened toward the side of the sliding plate, and the guide rail and the guide plate are hooked with each other.
2. The push-pull blackboard according to claim 1, characterized in that: The side walls on both sides of the inner side of the guide rail are provided with strip-shaped protrusions extending vertically.
3. The push-pull blackboard according to claim 1, characterized in that: The upper side of the upper frame and the lower side of the lower frame are both provided with a receiving groove, and the receiving groove is used to receive the bracket.
4. The push-pull blackboard according to claim 1, characterized in that: The bottom of the guide rail and the guide plate are both in arc-shaped structures, and the diameter of the arc-shaped structure at the bottom of the guide rail is greater than the diameter of the arc-shaped structure at the end of the guide plate.
5. The push-pull blackboard according to claim 1, characterized in that: It also includes a support plate, which is connected to the lower frame and is provided with a stop edge, and the interior of the support plate is used for placing articles.
6. The push-pull blackboard according to claim 5, characterized in that: It also includes a storage box, which is arranged on the lower side of the support plate and connected to the support plate. The support plate is provided with a plurality of storage openings connected with the storage box.
7. The push-pull blackboard according to claim 6, characterized in that: The storage box, the supporting plate and the lower frame are integrally formed.