Push-pull blackboard

Abstract

The utility model provides a push-pull blackboard, which relates to the technical field of blackboards and comprises a supporting mechanism, a writing board mechanism and an anti-falling mechanism. The supporting mechanism is a frame defined by an upper supporting frame, a lower supporting frame and supporting frames on the two sides, and the upper supporting frame and the lower supporting frame are symmetrically arranged. The writing board mechanism is provided with a movable board capable of sliding in the frame; the sliding mechanism is connected with the upper end of the movable plate and the upper supporting frame through a sliding block, and low-noise stable sliding is achieved. The anti-falling mechanism is formed by meshing an anti-falling frame fixed at the lower end of the movable plate and a T-shaped hook plate of the lower supporting frame, meshing limiting is triggered by lifting the movable plate upwards, and falling is effectively prevented. The width of the upper supporting frame is remarkably reduced through the thin design of the sliding blocks, the visual shielding area of the blackboard is reduced, and meanwhile noise interference of the sliding mechanism is reduced compared with a roller structure; an occlusion limiting mechanism of the anti-falling mechanism gives consideration to installation convenience and use safety, and the technical defects that a traditional push-and-pull blackboard is prone to falling off rails, large in occupied space and free of noise pollution are overcome.

Description

Technical Field

[0001] This utility model relates to the field of blackboard technology, and more specifically, to a push-pull blackboard. Background Technology

[0002] Currently, blackboards are an important teaching tool in educational activities. The most popular type of blackboard is the sliding writing board, which typically employs a double-layer design. The inner layer consists of a fixed inner panel and an interactive electronic display device, while the outer layer has a movable outer panel that can be slidably adjusted. This allows for seamless switching between the writing board and the electronic display device by adjusting the position of the movable outer panel.

[0003] However, existing frameless sliding blackboards typically use rollers to move the sliding panel and support frame. Because these rollers are relatively large, they require a significant amount of space after installation, resulting in a wider support frame and thus occupying more of the blackboard's writing area. This makes the students' visual experience of reading the blackboard less pleasant. Furthermore, the rollers rolling within the support frame generate noise when the panel moves, disrupting student learning. Additionally, when installing the panel, lifting it upwards lacks a reliable anti-detachment mechanism between the existing panel and the lower support frame, making it prone to falling off and easily detaching from the lower support frame.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0005] This invention provides a push-pull blackboard that is detachable and has narrow top and bottom borders, aiming to improve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides a push-pull blackboard, the specific technical solution of which is as follows:

[0007] A push-pull blackboard includes a support mechanism, characterized in that the support mechanism includes an upper support frame, a lower support frame, and two sets of side support frames, the two sets of side support frames being symmetrically arranged on both sides of the upper support frame and the lower support frame, together forming a frame for placing the blackboard;

[0008] The frame is equipped with a writing board mechanism, which includes a movable plate that can slide and change its position within the frame.

[0009] A sliding mechanism is provided between the movable plate and the upper support frame. The sliding mechanism includes a slider. One end of the slider is fixed to the upper end of the movable plate, and the other end of the slider is inserted into the upper support frame. The movable plate can slide along the upper support frame under the action of the slider.

[0010] An anti-detachment mechanism is provided between the movable plate and the lower support frame. The anti-detachment mechanism includes an anti-detachment frame, which is fixed to the lower end of the movable plate. A T-shaped hook plate is provided on the lower support frame, and the anti-detachment frame and the T-shaped hook plate are interlocked.

[0011] In one embodiment, L-shaped hook plates are symmetrically arranged on both sides of the anti-detachment frame, and the T-shaped hook plate is placed within the space enclosed by the two L-shaped hook plates.

[0012] In one embodiment, the slider is a T-shaped block.

[0013] In one embodiment, a groove matching the slider is provided on one side of the upper support frame, and the slider is inserted into the groove, allowing it to slide back and forth along the groove on the upper support frame.

[0014] In one embodiment, the inner wall of the groove is provided with a rib, and the outer surface of the slider abuts against the rib.

[0015] In one embodiment, the writing board mechanism further includes a fixed plate, which is fixed to both sides of the upper support frame and the lower support frame, and a movable plate is located between the fixed plates and can slide to cover the surface of the fixed plates.

[0016] In one embodiment, a connecting frame is provided between the side support frame and the upper and lower support frames. The connecting frame is inserted into the side support frame, the upper support frame, and the lower support frame respectively, thereby realizing the connection between the side support frame and the upper and lower support frames.

[0017] In one embodiment, two movable plates are provided, and a handle or buckle is fixed to an adjacent side of the two movable plates.

[0018] In one embodiment, connecting brackets are fixed at both the upper and lower ends of the fixing plate, and the connecting brackets are fixedly connected to the upper support frame and the lower support frame by multiple screws.

[0019] The beneficial effects of this embodiment are:

[0020] 1. An anti-detachment mechanism is provided between the movable plate and the lower support frame. A T-shaped hook plate is provided on the lower support frame, and an anti-detachment frame is engaged on the T-shaped hook plate. The anti-detachment frame is fixed to the lower side of the movable plate. When the movable plate is installed, the movable plate is lifted upward. When the anti-detachment frame at the lower end of the movable plate contacts the T-shaped hook plate, the movable plate cannot continue to move upward, thereby limiting the movable plate and preventing it from detaching from the lower support frame, thus playing a limiting and protective role.

[0021] 2. By fixing a slider on the upper support frame, the slider is housed in a groove on the upper support frame. The slider drives the movable plate to slide back and forth along the groove on the upper support frame. The slider is set as a T-shaped block. The T-shaped block is relatively thin, thus occupying less space on the upper support frame. Therefore, the upper support frame is narrower and occupies less blackboard area. As a result, students have a better sensory experience when reading the words on the blackboard. Moreover, the slider moves by sliding within the upper support frame, and the noise generated is greatly reduced compared to the rolling of the roller, so the impact on students is relatively small. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a front view of the overall structure provided by the embodiment of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A;

[0025] Figure 3 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0026] Figure 4 A schematic diagram showing the movable plate in the state of moving to both sides, provided for an embodiment of this utility model;

[0027] Figure 5 A diagram showing the side support frame separated from the upper and lower support frames, provided for an embodiment of this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point B;

[0029] Figure 7 Diagrams showing the upper and lower support frames separated from the movable plate, provided for embodiments of this utility model;

[0030] Figure 8 for Figure 7 Enlarged view of point C;

[0031] Figure 9 for Figure 7 Enlarged view of point D;

[0032] Figure 10 A schematic diagram of the installation of the upper support frame, lower support frame, and movable plate provided for an embodiment of this utility model;

[0033] Figure 11 This is a schematic diagram of the installation of the upper support frame, lower support frame, and fixing plate provided for an embodiment of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Support mechanism; 110. Upper support frame; 111. Slide groove; 1111. Protruding rib; 120. Lower support frame; 121. T-shaped hook plate; 130. Side support frame; 140. Connecting frame;

[0036] 200. Writing board mechanism; 210. Fixed plate; 220. Movable plate; 221. Handle; 222. Buckle;

[0037] 300. Sliding mechanism; 310. Slider; 311. T-block;

[0038] 400. Anti-detachment mechanism; 410. Anti-detachment frame; 411. L-shaped hook plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] The technical solutions provided by the embodiments of this utility model are described below with reference to the accompanying drawings.

[0041] Please see Figure 1 , Figure 3 , Figure 5 and Figure 6 This utility model provides a push-pull blackboard, including a support mechanism 100. The support mechanism 100 includes an upper support frame 110, a lower support frame 120, and two sets of side support frames 130. The two sets of side support frames 130 are symmetrically arranged on both sides of the upper support frame 110 and the lower support frame 120, and together they form a frame for placing the blackboard. In addition, a connecting frame 140 is provided between the side support frame 130 and the upper support frame 110 and the lower support frame 120. The connecting frame 140 is provided with plug-in blocks, which are respectively plugged into the inner grooves of the side support frame 130, the upper support frame 110, and the lower support frame 120 to realize the plug-in connection between the side support frame 130 and the upper support frame 110 and the lower support frame 120, which enables rapid assembly and improves the firmness after connection.

[0042] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 The frame contains a writing board mechanism 200, which includes a movable plate 220 that can slide and change position within the frame. The frame can be equipped with only the movable plate, or it can use a combination of a fixed plate and the movable plate. Therefore, the writing board mechanism 200 can also include a fixed plate 210, which is fixed to both sides of the upper support frame 110 and the lower support frame 120. The movable plate 220 is located between the fixed plates and can slide to cover the surface of the fixed plates. When both movable plates 220 are moved to the middle of the frame, the fixed plates on both sides are not blocked by the movable plates 220, allowing writing to be done on both the fixed plates 210 and the movable plates 220. When a new media screen is needed, the movable plates 220 are pushed to the sides, causing them to cover the fixed plates, leaving the middle of the frame unobstructed and exposing the new media screen, facilitating teaching with the new media.

[0043] Please see Figure 1 , Figure 2 and Figure 3 Additionally, a handle 221 is fixed on one side of the two movable plates 220 adjacent to each other. The screw fixing the handle 221 penetrates the entire movable plate 220, making the handle 221 more securely connected. The handle 221 is designed to facilitate pushing and pulling the two movable plates 220 by hand. A latch 222 is fixed on one side of the two movable plates 220 adjacent to each other. When the two movable plates 220 are closed, the latch 222 closes and locks the two movable plates 220, preventing the two movable plates 220 from being opened by external force, thus playing a locking role.

[0044] Please see Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11Specifically, a sliding mechanism 300 is provided between the movable plate 220 and the upper support frame 110. The sliding mechanism 300 includes a slider 310, one end of which is fixed to the upper end of the movable plate 220, and the other end of which is inserted into the upper support frame 110. The movable plate 220 can slide along the upper support frame 110 under the action of the slider 310. It should be noted that the slider 310 can be configured as a T-shaped block 311. The T-shaped block 311 is inserted into the upper support frame 110, and the movable plate 220 can slide along the upper support frame 110 under the action of the T-shaped block 311. A groove 111 is provided on one side of the upper support frame 110, and the T-shaped block 311 is inserted into the groove 111. The T-shaped block 311 can slide back and forth on the upper support frame 110 along the slide groove 111. The thickness of the T-shaped block 311 is small, and thus the slide groove 111 is small. Therefore, the volume of the upper support frame 110 is small, and the width of the upper support frame 110 is narrow, occupying less blackboard area. This makes it easier for students to see the words on the blackboard. Preferably, a rib 1111 is provided on the inner wall of the slide groove 111. The outer surface of the T-shaped block 311 abuts against the rib 1111, and the T-shaped block 311 and the slide groove 111 are in line contact, which greatly reduces the frictional resistance between the two. This makes the T-shaped block 311 slide more easily and effortlessly, and the noise generated is greatly reduced compared to the rolling of traditional rollers, which has a relatively small impact on students.

[0045] Please see Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 It should be noted that an anti-detachment mechanism 400 is provided between the movable plate 220 and the lower support frame 120. The anti-detachment mechanism 400 includes an anti-detachment frame 410, which is fixed to the lower end of the movable plate 220 to fix the anti-detachment frame 410 to the movable plate 220. L-shaped hook plates 411 are symmetrically arranged on both sides of the anti-detachment frame 410, and a T-shaped hook plate 121 is arranged between the two L-shaped hook plates 411. The T-shaped hook plate 121 is arranged on the lower support frame 120 and is placed within the space enclosed by the two L-shaped hook plates 411. The hook plates 121 are interlocked. When the movable plate 220 is installed, it is lifted upwards. When the anti-detachment bracket 410 at the lower end of the movable plate 220 contacts the T-shaped hook plate 121, the movable plate 220 cannot continue to move upwards, thus limiting the movable plate 220 and preventing it from detaching from the lower support frame 120. This provides a limiting and protective function. In addition, the open design of the T-shaped hook plate 121 on the lower support frame 120 prevents chalk dust or other dust and impurities from accumulating on the sliding track below, making it cleaner and more hygienic and convenient for cleaning the blackboard.

[0046] It should be noted that because the fixed plate 210 and movable plate 220 are made of relatively soft material to allow for writing and to reduce their weight, the connecting screws are prone to loosening when fixing the fixed plate 210 to the frame, resulting in an unstable installation. Therefore, connecting brackets are fixed at both the top and bottom of the fixed plate 210 and movable plate 220. The connecting brackets cover both ends of the fixed plate 210 and movable plate 220. The connecting brackets can be made of metal, ensuring a firm connection and preventing loosening. In addition, the connecting brackets are laid out along the length of the fixed plate 210, which can help to fix the frame. Multiple screws are provided along the length of plate 210. The connecting bracket is fixedly connected to the upper support frame 110 and the lower support frame 120 by multiple screws. The increased number of fixing points greatly improves the firmness of the connection between the two. Moreover, by eliminating traditional fasteners, the installation steps are reduced, making installation quick and improving installation efficiency. One end of slider 310 is fixed to the connecting bracket at the upper end of movable plate 220, which improves the firmness of the connection between slider 310 and movable plate 220. Anti-detachment bracket 410 is fixed to the connecting bracket at the lower end of movable plate 220, which improves the firmness of the connection between anti-detachment bracket 410 and movable plate 220.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sliding blackboard comprising a support mechanism, characterized in that, The support mechanism comprises an upper support frame, a lower support frame and two groups of side support frames symmetrically arranged on both sides of the upper support frame and the lower support frame, which jointly form a frame for placing the blackboard; The frame is internally provided with a writing board mechanism, which comprises a movable plate capable of sliding within the frame to change its position; A sliding mechanism is arranged between the movable plate and the upper support frame, which comprises a sliding block, one end of which is fixed to the upper end of the movable plate, and the other end of which is inserted into the upper support frame, so that the movable plate can slide along the upper support frame under the driving of the sliding block; A anti-dropping mechanism is arranged between the movable plate and the lower support frame, which comprises an anti-dropping frame fixed to the lower end of the movable plate, and a T-shaped hook plate arranged on the lower support frame, the anti-dropping frame and the T-shaped hook plate being arranged in mutual engagement.

2. A sliding blackboard according to claim 1, characterized in that Two L-shaped hook plates are symmetrically arranged on both sides of the anti-dropping frame, and the T-shaped hook plate is arranged in the space surrounded by the two L-shaped hook plates.

3. A sliding blackboard according to claim 1, wherein The sliding block is a T-shaped block.

4. A sliding blackboard according to claim 1, wherein One side of the upper support frame is provided with a sliding groove matched with the sliding block, the sliding block is inserted into the sliding groove, and the sliding block can slide back and forth on the upper support frame along the sliding groove.

5. A sliding blackboard according to claim 4, wherein A convex rib is arranged on the inner wall of the sliding groove, and the outer surface of the sliding block abuts against the convex rib.

6. A sliding blackboard according to claim 1, wherein The writing board mechanism further comprises a fixed plate fixed on both sides of the upper support frame and the lower support frame, and the movable plate is located between the fixed plates and can slide to cover the surface of the fixed plates.

7. A sliding blackboard according to claim 1, wherein A connecting frame is arranged between the side support frame and the upper support frame and the lower support frame, which is inserted into the side support frame, the upper support frame and the lower support frame, so as to connect the side support frame with the upper support frame and the lower support frame.

8. A sliding blackboard according to claim 1, wherein The movable plate is provided with two, and a handle or a buckle is fixed to one side of the two movable plates.

9. A sliding blackboard according to claim 6, wherein The fixed plate is fixedly connected with the upper support frame and the lower support frame by a plurality of screws.

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