Safe and labor-saving multi-layer sliding blackboard

Abstract

The utility model relates to a safe and labor-saving multi-layer sliding blackboard, and belongs to the field of blackboards, the safe and labor-saving multi-layer sliding blackboard comprises a frame, the frame comprises two stand columns and two transverse columns, the opposite side walls of the two stand columns are each provided with a plurality of rails, and the rails are arranged in parallel in the length direction of the stand columns; each movable plate comprises a plate surface and a frame on the periphery of the plate surface, and the movable plates are arranged in a front-back staggered mode through the opposite rails; the friction assembly comprises a friction block, the friction block can move in the direction close to or away from the frame, a spring is arranged on the side, away from the frame, of the friction block, the spring applies force to the friction block close to the frame, and the friction block can abut against the frame under the action of the spring; and the releasing assembly comprises a releasing rod, the releasing rod is connected with the friction block, and the releasing rod can drive the friction block to overcome the elastic force of the spring so that the friction block can move in the direction away from the frame. The multi-layer sliding blackboard has the effect of improving the safety of the multi-layer sliding blackboard.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blackboard, especially to a safe and labor-saving multi-layer sliding blackboard. BACKGROUND

[0002] In the existing teaching process, the blackboard is essential, and teachers teach students by excerpting the board book on the blackboard. The blackboard is also an important platform for information interaction between teachers and students.

[0003] The multi-layer sliding blackboard refers to a whole blackboard frame fixed on the wall, and the blackboard itself is composed of several small blackboards. The several small blackboards can be moved left and right or up and down in the frame by manual pushing of the teacher to realize smooth sliding of a single or multiple board blocks to display or write corresponding content.

[0004] For the related technology in the above, younger students have weak safety awareness, and may unconsciously touch, push or shake the multi-layer sliding blackboard during the break or rest, causing the board blocks of the blackboard to slide, which may cause students themselves or others to be injured and cause accidental injury. CONTENT OF THE INVENTION

[0005] In order to improve the safety of the multi-layer sliding blackboard, the present application provides a safe and labor-saving multi-layer sliding blackboard.

[0006] The safe and labor-saving multi-layer sliding blackboard provided by the present application adopts the following technical scheme:

[0007] A safe and labor-saving multi-layer sliding blackboard, comprising a frame, the frame comprising two parallel vertical columns and two parallel horizontal columns, the vertical columns being perpendicular to and connected with the horizontal columns, the opposite side walls of the two vertical columns each being provided with a plurality of tracks, the plurality of tracks being arranged in parallel along the length direction of the vertical column;

[0008] A plurality of movable boards, the plurality of movable boards being located between the two vertical columns inside the frame; each movable board comprising a board surface and a frame around the board surface, the movable boards being arranged in front and back staggered layers through the opposite tracks;

[0009] A friction assembly, the friction assembly being installed on the side of the vertical column close to the movable board, the friction assembly comprising a friction block, the friction block being capable of moving in the direction close to or away from the frame, the friction block being provided with a spring on the side away from the frame, the spring giving the friction block a force close to the frame, the friction block being capable of abutting against the frame under the action of the spring;

[0010] A release assembly is provided, which includes a release rod connected to the friction block, and the release rod can drive the friction block to move away from the frame against the elastic force of the spring.

[0011] By adopting the above technical scheme, the friction assembly is installed on the stand, and the assembly abuts against the frame through the spring force, thereby effectively increasing the resistance of the movable plate. This design can prevent the movable plate from accidentally sliding due to slight touching or pushing, thereby greatly reducing the risk of injury caused by the sliding of the movable plate. By connecting the release rod to the friction block, the teacher can easily overcome the elastic force of the spring by operating the release rod to move the friction block away from the frame, thereby reducing the force required to move the movable plate. This not only improves the safety of the blackboard, but also improves the convenience of use.

[0012] Optionally, the stand is provided with a mounting groove corresponding to the position of the friction block, and the friction block is located inside the mounting groove, and the side wall of the friction block abuts against the inner wall of the mounting groove.

[0013] By adopting the above technical scheme, the side wall of the friction block abuts against the inner wall of the mounting groove, and the friction block slides in the mounting groove. On the one hand, the groove wall of the mounting groove provides a guide function for the sliding of the friction block, thereby ensuring the stability of the friction block. On the other hand, the friction block abuts against the movable plate inside the mounting groove, thereby avoiding the occupation of additional space by the friction block and improving the proportion of the board surface relative to the whole movable plate.

[0014] Optionally, the friction block is provided with a mounting plate on the side close to the spring, and the friction block is detachably connected to the mounting plate.

[0015] By adopting the above technical scheme, the detachable connection of the friction block and the mounting plate ensures that when the friction block is worn out and the friction force decreases, the user can replace the friction block to ensure the friction force between the friction block and the movable plate, thereby ensuring the stability and reliability of the friction assembly.

[0016] Optionally, the spring is provided with an adjusting plate at the end away from the friction block, and the stand is provided with an adjusting bolt at a position corresponding to the adjusting plate, and the adjusting bolt is threaded through the stand parallel to the sliding direction of the friction block and is connected to the adjusting plate.

[0017] By adopting the above technical scheme, by providing the adjusting plate and the adjusting bolt between the friction block and the spring, the present scheme allows the user to adjust the contact pressure between the friction block and the frame according to actual needs. This design provides higher flexibility and ensures the stability and safety of the blackboard under different conditions.

[0018] Optionally, the friction block is provided with an abutting block on the side close to the spring, the abutting block can drive the friction block to move; the release lever abuts against the abutting block, and the abutting block and the release lever abut against each other at a bevel, which is inclined from the direction away from the friction block to the direction close to the friction block and away from the release lever.

[0019] By adopting the above technical scheme, when the release lever contacts the abutting block, the continuous movement of the release lever extrudes the bevel position of the abutting plate, so that the abutting block drives the friction block to move, and then the friction block is separated from the movable plate, thereby realizing the release of the movable plate.

[0020] Optionally, the friction assembly is located at the central position of the stand along the length direction of the stand.

[0021] By adopting the above technical scheme, the friction assembly is located at the central position of the stand along the length direction of the stand, so that the movable plate in contact with the friction block can be in contact with the friction block regardless of the state, thereby ensuring the stability of the blackboard.

[0022] Optionally, the opposite sides of the two horizontal columns are provided with buffer members, and the buffer members can provide force to the movable plate towards the inside of the frame.

[0023] By adopting the above technical scheme, the buffer members are arranged on the horizontal columns, which can provide additional resistance when the movable plate moves to the limit position, thereby avoiding the impact caused by rapid sliding, further increasing the safety of the blackboard, and reducing the noise during operation.

[0024] Optionally, each track is provided with a plurality of rolling members, and the frame abuts against the plurality of rolling members when sliding in the track.

[0025] By adopting the above technical scheme, the rolling members greatly reduce the direct friction between the movable plate and the track through the rotating function, so that the movable plate can slide more easily in the track, thereby reducing the force required by the operator to move the movable plate, achieving the purpose of saving labor, and realizing the smooth and efficient sliding of the movable plate in the track.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] The friction block abuts against the frame through the spring force, which effectively increases the resistance of the movable plate to move. This design can prevent the movable plate from accidentally sliding due to slight touching or pushing, thereby greatly reducing the risk of injury caused by the sliding of the movable plate. By arranging the release lever, the teacher can easily overcome the spring force by operating the release lever to move the friction block away from the frame, thereby reducing the force required to move the movable plate. This not only improves the safety of the blackboard, but also improves the convenience of use.

[0028] By setting the adjusting plate and adjusting bolt between the friction block and the spring, the scheme allows the user to adjust the contact pressure between the friction block and the frame according to the actual needs. This design provides higher flexibility, ensuring the stability and safety of the blackboard under different conditions;

[0029] The buffer is provided on the cross column, which can provide additional resistance when the movable plate moves to the limit position, avoiding the impact caused by rapid sliding, which further increases the safety of the blackboard. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a safe and labor-saving multi-layer sliding blackboard according to an embodiment of the present application.

[0031] Figure 2 is a structural schematic diagram of the track and rolling element according to an embodiment of the present application.

[0032] Figure 3 is a sectional view of the fixed pulley, buffer and buffer plate according to an embodiment of the present application.

[0033] Figure 4 is a sectional view of the friction assembly according to an embodiment of the present application.

[0034] Figure 5 is Figure 1 is an enlarged view of part A in FIG. 6.

[0035] Marked: 1, frame; 11, stand column; 111, track; 112, rolling element; 113, mounting groove; 114, baffle; 115, accommodation slot; 12, cross column; 2, movable plate; 21, plate surface; 22, frame; 221, connecting chain; 222, fixed pulley; 3, friction assembly; 31, friction block; 32, mounting plate; 33, spring; 34, adjusting plate; 35, adjusting bolt; 36, abutting block; 4, release assembly; 41, release rod; 5, buffer; 51, buffer plate; 6, limiting plate. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying Figures 1-5 The present application is further described in detail.

[0037] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be direct connection, can also be indirect connection through an intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In this application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0039] The embodiment of the present application discloses a safe and labor-saving multi-layer sliding blackboard. The embodiment takes a double-layer sliding blackboard as an example, and refers to Figure 1 A safe and labor-saving multi-layer sliding blackboard comprises a frame 1 and two movable plates 2, the two movable plates 2 are arranged in staggered layers in front of and behind the frame 1 and can slide in the frame 1. One of the movable plates 2 is provided with a friction assembly 3, which can effectively increase the resistance of the movable plate 2 to move and hinder the sliding of the movable plate 2. This design can prevent the movable plate 2 from accidentally sliding due to slight touching or pushing, thereby greatly reducing the risk of injury caused by the sliding of the movable plate 2 and improving the safety of the multi-layer sliding blackboard.

[0040] Referring to Figure 1 and Figure 2 The frame 1 comprises two parallel vertical columns 11 and two parallel horizontal columns 12, the two vertical columns 11 are vertically arranged, the two horizontal columns 12 are horizontally arranged, and the vertical columns 11 are perpendicular to the horizontal columns 12 and connected end to end. Each of the opposite side walls of the vertical column 11 is provided with two parallel tracks 111, and each of the tracks 111 is parallel to the length direction of the vertical column 11.

[0041] Referring to Figure 1 and Figure 2Two movable plates 2 are located inside the frame 1 between two of the columns 11, each of the movable plates 2 comprises a plate face 21 and a frame 22 around the plate face 21, and the movable plates 2 are arranged in staggered layers in front of and behind the rails 111. Each of the rails 111 is rotationally connected with a plurality of rolling elements 112, which can be balls or rollers, the rolling elements 112 in the embodiment are rollers, and the rolling elements 112 are arranged in an array along the length direction of the rails 111, and the frame 22 abuts against the rolling elements 112 when sliding in the rails 111. The rolling elements 112 greatly reduce the direct friction between the movable plates 2 and the rails 111 through the rotation function, so that the movable plates 2 can slide more easily in the rails 111, achieving the purpose of saving labor.

[0042] With reference to Figure 3 and Figure 4 , the two movable plates 2 are fixedly connected with connecting chains 221 at the upper and lower ends, and the movable plates 2 arranged in staggered layers are connected through the same connecting chain 221 at the corresponding positions. The frame 1 is rotationally connected with a fixed pulley 222 near the four corners, and the connecting chain 221 is wound around the fixed pulley 222, when one of the movable plates 2 moves upward, the other movable plate 2 descends under the action of the connecting chain 221.

[0043] With reference to Figure 4 , the friction assembly 3 is installed on the side of the column 11 close to the movable plate 2 and located at the central position of the column 11 along the length direction. The friction assembly 3 comprises a friction block 31, and the column 11 is provided with an installation slot 113 corresponding to the position of the friction block 31, the friction block 31 is located inside the installation slot 113, the side wall of the friction block 31 abuts against the inner wall of the installation slot 113, and the friction block 31 can slide in the direction close to or away from the frame 22 under the guidance of the installation slot 113.

[0044] With reference to Figure 5 , the column 11 is provided with a baffle 114 corresponding to the position of the installation slot 113, the baffle 114 shields the friction assembly 3 in the installation slot 113, the baffle 114 is connected with the column 11 through bolts, and the baffle 114 and the surface of the column 11 are smoothly transitioned, improving the aesthetic appearance of the blackboard. When the friction block 31 needs to be replaced, the baffle 114 can be removed to replace the friction block 31.

[0045] With reference to Figure 4, the friction block 31 is provided with a mounting plate 32 away from the side of the frame 1, the friction block 31 is provided with a dovetail groove near the side of the mounting plate 32, the length direction of the dovetail groove is arranged along the thickness direction of the frame 1; The mounting plate 32 is provided with a dovetail matching the dovetail groove at the position corresponding to the dovetail groove, the dovetail is inserted into the dovetail groove to realize the detachable connection of the friction block 31 and the mounting plate 32, which ensures that when the surface of the friction block 31 is worn, the user can replace the friction block 31 to ensure the friction between the friction block 31 and the movable plate 2, and then ensure the stability and reliability of the friction assembly 3.

[0046] Referring to Figure 4 , the mounting plate 32 is fixedly connected with a spring 33 away from the side of the friction block 31, the spring 33 provides a force to the mounting plate 32 close to the frame 22 in the mounting groove 113, and the friction block 31 can abut against the frame 22 under the action of the spring 33, effectively increasing the resistance of the movable plate 2 moving, preventing the movable plate 2 from sliding accidentally due to slight touch or push, thereby greatly reducing the risk of injury caused by the sliding of the movable plate 2.

[0047] Referring to Figure 4 , the spring 33 is fixedly connected with an adjusting plate 34 away from one end of the mounting plate 32, and the adjusting screw 35 is provided at the position corresponding to the adjusting plate 34 of the stand column 11, the adjusting screw 35 is threaded into the stand column 11 parallel to the sliding direction of the friction block 31 and is screwed into the adjusting plate 34. When it is necessary to adjust the contact pressure between the friction block 31 and the frame 22, rotate the adjusting screw 35, and move the adjusting plate 34 towards or away from the friction block 31, thereby adjusting the contact pressure between the friction block 31 and the frame 22, improving flexibility and ensuring the stability and safety of the blackboard under different conditions.

[0048] Referring to Figure 4 and Figure 5, the mounting plate 32 is fixedly connected with an abutting block 36 away from the friction block 31, the abutting block 36 penetrates the adjusting plate 34, and the abutting block 36 can drive the friction block 31 to move. In the state that the blackboard is installed on the wall, the abutting block 36 is provided with a release assembly 4 away from the movable plate 2, the release assembly 4 comprises a release rod 41, the release rod 41 penetrates a stand 11 and abuts against one side of the adjusting plate 34 away from the abutting block 36, and the stand 11 is provided with a gap 115 corresponding to the position of the release rod 41. The abutting block 36 is provided with an inclined surface at the position abutting against the release rod 41, and the inclined surface is inclined away from the release rod 41 from the direction away from the friction block 31 to the direction close to the friction block 31. When the release rod 41 is pushed, the release rod 41 is in contact with the abutting block 36, the release rod 41 is continuously pushed, the release rod 41 is pressed against the inclined surface of the abutting block 36, the abutting block 36 drives the friction block 31 to move away from the frame 22 against the elastic force of the spring 33, and then the friction block 31 is separated from the movable plate 2, so that the release of the movable plate 2 is realized.

[0049] The teacher can adjust the contact pressure between the friction block 31 and the frame 22, so that the teacher can push the movable plate 2 without pressing the release rod 41, but the children cannot push the movable plate 2 under the contact pressure. At this time, the safety of students is ensured, and the teacher does not need to go to the position of the release assembly 4 every time, so that the convenience of using the blackboard is improved.

[0050] Referring to Figure 3 The two horizontal columns 12 are provided with buffer pieces 5 on opposite sides, the buffer pieces 5 can be springs 33 or elastic sheets, the buffer piece 5 in the embodiment is preferably a spring 33, one end of the buffer piece 5 is fixedly connected with the horizontal column 12, and the other end is fixedly connected with a buffer plate 51, the buffer plate 51 can move in the direction close to or away from the horizontal column 12, and the buffer piece 5 gives the buffer plate 51 a force towards the inside of the frame 1. The buffer plate 51 and the horizontal plate are provided with a limiting plate 6, the limiting plate 6 can limit the minimum distance between the buffer plate 51 and the horizontal plate, and when the buffer plate 51 is in abutment against the limiting plate 6 under the action of the movable plate 2, it indicates that the movable plate 2 has moved to the edge position.

[0051] The implementation principle of the safe and labor-saving multi-layer sliding blackboard is that when the movable plate 2 is not needed to slide during the interval, the friction block 31 is in abutment against the frame 22 under the action of the spring 33, the friction of the frame 22 is increased, the resistance of the movable plate 2 to move is effectively increased, accidental sliding of the movable plate 2 due to slight touch or push is prevented, and the risk of injury caused by the sliding of the movable plate 2 is greatly reduced.

[0052] When the activity board 2 needs to slide, the teacher can easily overcome the elastic force of the spring 33 by pressing the release lever 41 to make the friction block 31 away from the frame 22, thereby reducing the force required to move the activity board 2. When the activity board 2 gradually approaches the two horizontal columns 12 during movement, the frame 22 of the activity board 2 first abuts against the buffer plate 51, and when the buffer plate 51 abuts against the limiting plate 6 under the action of the activity board 2, it indicates that the activity board 2 has been moved to the edge position. The buffer 5 gives the activity board 2 a force towards the inside of the frame horizontal column frame 1, reduces the moving speed of the activity board 2, and in turn reduces the impact strength of the activity board 2 and the limiting plate 6, reduces the noise, and increases the safety.

[0053] The embodiments of the present application have the effect of improving the safety of the multi-layer sliding blackboard. The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A safe and easy multi-layer sliding blackboard, characterized in that, The utility model relates to a kind of friction type movable board, including: Frame (1), the frame (1) includes two parallel columns (11) and two parallel cross columns (12), the column (11) is perpendicular and is connected with the cross column (12), the opposite side wall of two the column (11) is equipped with multiple tracks (111), multiple the track (111) is parallel along the length direction of the column (11) and is equipped; Multiple movable board (2), multiple the movable board (2) is located between the frame (1) inside two the column (11);Each movable board (2) includes board face (21) and the frame (22) around board face (21), the movable board (2) is arranged by the track (111) opposite before and after staggered; Friction component (3), the friction component (3) is installed in the column (11) close to the movable board (2) side, the friction component (3) includes friction block (31), the friction block (31) can be moved in the direction close to or away from the frame (22), the friction block (31) is equipped with spring (33) on the side away from the frame (22), the spring (33) gives the friction block (31) close to the frame (22) force, the friction block (31) can be abutted with the frame (22) under the action of the spring (33); Release component (4), the release component (4) includes release rod (41), the release rod (41) is connected with the friction block (31), the release rod (41) can drive the friction block (31) to overcome the elastic force of the spring (33), and the friction block (31) is moved away from the frame (22) direction.

2. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: The column (11) is equipped with mounting groove (113) corresponding to the position of the friction block (31), and the friction block (31) is located in the mounting groove (113). The side wall of the friction block (31) is in abutment with the inner wall of the mounting groove (113).

3. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: The friction block (31) is provided with a mounting plate (32) on the side close to the spring (33). The friction block (31) is detachably connected to the mounting plate (32).

4. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: The spring (33) is provided with an adjusting plate (34) at the end away from the friction block (31). The column (11) is provided with an adjusting bolt (35) at the position corresponding to the adjusting plate (34). The adjusting bolt (35) is threaded into the adjusting plate (34) and penetrates the column (11) parallel to the sliding direction of the friction block (31).

5. A safe and easy multi-layer sliding blackboard according to claim 2, characterized in that: The friction block (31) is provided with an abutting block (36) on the side close to the spring (33). The abutting block (36) can move the friction block (31). The release rod (41) is in abutment with the abutting block (36). The abutting block (36) and the release rod (41) are in abutment. The abutting position is inclined. The inclined surface is inclined away from the release rod (41) from the direction away from the friction block (31) to the direction close to the friction block (31).

6. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: The friction component (3) is located at the center position of the column (11) along the length direction of itself.

7. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: Two said transverse columns (12) are provided with a buffer (5) on opposite sides, and the buffer (5) can give the movable plate (2) a force towards the inside of the frame (1).

8. A safe and easy multi-layer sliding blackboard according to claim 1, characterized in that: Each said track (111) is provided with a plurality of rolling elements (112), and the edge frame (22) abuts a plurality of said rolling elements (112) when sliding in the track (111).

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