Push-pull blackboard and blackboard device

Abstract

The utility model is suitable for the technical field of blackboard equipment, and provides a push-pull blackboard and a blackboard device. The push-pull blackboard comprises a blackboard assembly which comprises a fixed blackboard and a movable blackboard, and the movable blackboard can slide relative to the fixed blackboard in the preset direction; the damping assembly is installed on the fixed blackboard and comprises a damping part, the damping part is provided with a first connecting piece, the movable blackboard is provided with a second connecting piece, the movable blackboard can be connected with the damping part through the first connecting piece and the second connecting piece which are connected, and the damping part can apply resistance to the movable blackboard; and in the process that the movable blackboard slides to the position where the movable blackboard needs to stay, the second connecting piece is connected with the first connecting piece, and the damping part applies resistance to the movable blackboard sliding in the preset direction. The damping part not only can provide buffering and speed reducing effects on the movable blackboard sliding in the preset direction, but also can exert resistance on the movable blackboard located at the position where the movable blackboard needs to stay, and the movable blackboard is limited from sliding in the preset direction.

Description

Technical Field

[0001] The present application relates to the technical field of blackboard equipment, and in particular to a push-pull blackboard and a blackboard device. Background Art

[0002] A sliding blackboard is a common teaching tool, typically used in classrooms or conference rooms. The sliding blackboard in the related art includes a fixed blackboard and a movable blackboard, wherein the movable blackboard is located on one side of the fixed blackboard and can slide left and right along the length of the fixed blackboard.

[0003] The movable blackboard in the related art usually uses rubber damping blocks to achieve buffering and deceleration so that it can stay at the desired stop position. However, the movable blackboard that stays at the desired stop position is still prone to sliding relative to the fixed blackboard during writing, affecting the writing effect. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a push-pull blackboard and a blackboard device, aiming to solve the technical problem in the related art that the movable blackboard that stops at the desired stop position after buffering and deceleration is prone to sliding relative to the fixed blackboard.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, a push-pull blackboard is provided, including: a blackboard assembly, the blackboard assembly includes a fixed blackboard and a movable blackboard, the movable blackboard is located on one side of the fixed blackboard, and can slide relative to the fixed blackboard along a preset direction; a damping assembly, installed on the fixed blackboard, the damping assembly includes a damping part, the damping part has a first connecting member, and the movable blackboard is provided with a second connecting member, the second connecting member is detachably connected to the first connecting member, the movable blackboard can be connected to the damping part through the connected first connecting member and the second connecting member, and the damping part can apply resistance to the movable blackboard; in the process of the movable blackboard sliding to the desired stop position, the second connecting member is connected to the first connecting member, and the damping part applies resistance to the movable blackboard sliding along the preset direction.

[0006] Optionally, a first connecting member is provided with a first connecting structure, and a second connecting member is provided with a second connecting structure. One of the first connecting structure and the second connecting structure is a card joint, and the other is a card slot. The second connecting member is connected to the first connecting member by being card-connected in the card slot.

[0007] Optionally, the card slot is provided on the first connecting member, and the card joint is installed on the second connecting member. The card slot forms a first connecting structure, and the card joint forms a second connecting structure.

[0008] Optionally, the damping portion includes a damping member and a first connecting member, the damping member is a cylinder or a hydraulic cylinder, the damping member has a piston rod, the piston rod is connected to the first connecting member, and can drive the first connecting member to move along a preset direction.

[0009] Optionally, the damping part also includes a mounting part, which is mounted on the fixed blackboard, and the damping part is mounted on the mounting part; a slide groove is provided on the mounting part, and the first connecting part is mounted in the slide groove and can slide in the slide groove along the extension direction of the slide groove; the slide groove includes a guide groove section and a limiting groove section, the extension direction of the guide groove section is parallel to the preset direction, and the limiting groove section is located on the side of the guide groove section away from the damping part; the limiting groove section is connected to the guide groove section, and there is an angle between the extension direction of the limiting groove section and the extension direction of the guide groove section, and the limiting groove section can prevent the first connecting part from continuing to slide in the direction away from the damping part; when the first connecting part is located in the limiting groove section, the second connecting part can be separated from or connected to the first connecting part.

[0010] Optionally, the damping part further includes a reset member, which is mounted on the mounting member and connected to the first connecting member; when the first connecting member is located in the limiting groove section, the reset member applies a pulling force to the first connecting member set toward the damping member.

[0011] Optionally, the second connecting member is installed on the movable blackboard, and a pulley is installed on the second connecting member, and the pulley can slide on the fixed blackboard along a preset direction.

[0012] Optionally, a slide rail is installed on the fixed blackboard, the slide rail is set along a preset direction, the pulley is in contact with the slide rail, and the pulley can slide on the slide rail along the preset direction.

[0013] Optionally, the damping assembly includes two damping parts, which are arranged at intervals along a preset direction; two second connecting members are provided on the movable blackboard, which are arranged at intervals along a preset direction, and the two second connecting members are located between the two damping parts and are respectively arranged in one-to-one correspondence with the two damping parts; and / or, the number of blackboard assemblies is two groups, and the two groups of blackboard assemblies are arranged at intervals along a preset direction, and the two movable blackboards can approach or move away from each other along the preset direction; the number of damping assemblies is two groups, and the two groups of damping assemblies are respectively arranged in one-to-one correspondence with the two groups of blackboard assemblies.

[0014] According to another aspect of the present application, a blackboard device is provided, comprising a display screen and the above-mentioned sliding blackboard, wherein the display screen is located on one side of the fixed blackboard, and the movable blackboard can cover the display screen.

[0015] The beneficial effect of the push-pull blackboard provided by the present application is that: when the movable blackboard in the present application needs to slide to the desired stop position, the second connecting member is first connected to the first connecting member to connect the movable blackboard to the damping part; after the movable blackboard is connected to the damping part, the damping part will apply resistance to the movable blackboard sliding along the preset direction to slow down the sliding speed of the movable blackboard, so that the movable blackboard stays at the desired stop position; at this time, since the movable blackboard remains connected to the damping part, if the movable blackboard staying at the desired stop position wants to slide along the preset direction, it needs to overcome the resistance applied by the damping part to the sliding movable blackboard in order to achieve sliding. This design prevents the movable blackboard staying at the desired stop position from easily sliding relative to the fixed blackboard, thereby ensuring the stability of the movable blackboard staying at the desired stop position. The damping part in the present application can not only provide buffering and deceleration for the movable blackboard sliding along the preset direction, thereby extending the service life of the movable blackboard, but also apply resistance to the movable blackboard at the required stop position, limiting the sliding of the movable blackboard along the preset direction, thereby effectively reducing the possibility of the movable blackboard sliding relative to the fixed blackboard during writing, and improving the writing effect; in addition, the damping part in the present application can also effectively slow down the sliding speed of the movable blackboard when it is subjected to violent pushing and pulling in the teaching scenario, and ultimately keep the movable blackboard stable. Compared with ordinary rubber damping blocks, it is less prone to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical features of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the structure of the blackboard device provided in an embodiment of the present application at a first viewing angle;

[0018] Figure 2 A schematic diagram of the structure of the blackboard device provided in an embodiment of the present application at a second viewing angle;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of point A in the middle;

[0020] Figure 4 A schematic structural diagram of the blackboard device provided in an embodiment of the present application from a third perspective;

[0021] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle;

[0022] Figure 6A schematic diagram of the structure of the blackboard device provided in an embodiment of the present application, with the slide rails and the connecting strips hidden, viewed from a third perspective;

[0023] Figure 7 for Figure 6 Enlarged schematic diagram of point C in the middle;

[0024] Figure 8 A schematic structural diagram of the damping portion and the second connecting member provided in an embodiment of the present application after being connected;

[0025] Figure 9 A schematic structural diagram of the damping portion and the second connecting member after being separated according to an embodiment of the present application;

[0026] The reference numerals used in the above drawings are as follows:

[0027] 100, blackboard assembly; 110, fixed blackboard; 111, slide rail; 120, movable blackboard; 130, second connecting member; 131, card joint; 140, pulley; 150, connecting bar;

[0028] 200, damping assembly; 210, damping portion; 211, damping member; 212, first connecting member; 2121, slot; 213, mounting member; 2131, slide; 2131a, guide slot section; 2131b, limit slot section; 214, reset member;

[0029] 300. Display screen. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes, and effects of the present application, the specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and Examples. The following examples are only used to illustrate the present application, but are not used to limit the scope of protection of the present application. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without paying creative work should all fall within the scope of protection of the present application.

[0031] In the description of this application, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting this application.

[0032] In the description of this application, it should be understood that the numbers themselves, such as "first", "second", etc., are only used to distinguish the objects described, and have no sequential or technical meaning, and cannot be understood as stipulating or implying the importance of the objects described.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] In this application, the term "plurality" refers to two or more than two. Furthermore, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0035] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. Those of ordinary skill in the art will understand the specific meanings of the above terms in this application in specific circumstances.

[0036] As described in the background, sliding blackboards are a common teaching tool, typically used in classrooms or conference rooms. These related art sliding blackboards include a fixed blackboard and a movable blackboard. The movable blackboard is located on one side of the fixed blackboard and can slide left and right along its length. These movable blackboards typically use rubber damping blocks to provide cushioning and deceleration, allowing them to stay in their desired position. However, even when the movable blackboard is in its desired position, it can still slip relative to the fixed blackboard during writing, affecting writing quality.

[0037] Reference Figures 1 to 9In order to solve the above problems, according to one aspect of the present application, an embodiment of the present application provides a push-pull blackboard, which includes a blackboard assembly 100 and a damping assembly 200, wherein the blackboard assembly 100 includes a fixed blackboard 110 and a movable blackboard 120, the movable blackboard 120 is located on one side of the fixed blackboard 110, and can slide relative to the fixed blackboard 110 along a preset direction; the damping assembly 200 is installed on the fixed blackboard 110, and the damping assembly 200 includes a damping part 210, and the damping part 210 has a first connecting member 212. A second connecting member 130 is provided on the movable blackboard 120. The second connecting member 130 is detachably connected to the first connecting member 212. The movable blackboard 120 can be connected to the damping part 210 through the connected first connecting member 212 and the second connecting member 130. The damping part 210 can apply resistance to the movable blackboard 120. In the process of the movable blackboard 120 sliding to the desired stop position, the second connecting member 130 is connected to the first connecting member 212, and the damping part 210 applies resistance to the movable blackboard 120 sliding along the preset direction.

[0038] In the embodiment of the present application, the fixed blackboard 110 and the movable blackboard 120 both have a writing surface and a back surface arranged relatively to each other, and the movable blackboard 120 is located on the side of the writing surface of the fixed blackboard 110 away from the back surface of the fixed blackboard 110; the specifications of the fixed blackboard 110 and the movable blackboard 120 are usually kept the same, and the length direction of the fixed blackboard 110 is parallel to the length direction of the movable blackboard 120, and the width direction of the fixed blackboard 110 is parallel to the width direction of the movable blackboard 120. In other embodiments, the specifications of the fixed blackboard 110 and the movable blackboard 120 may also be different, which depends on actual needs and is not limited here; the preset direction is a bidirectional direction, and the preset direction is usually parallel to the length direction of the fixed blackboard 110, so that the movable blackboard 120 can approach or move away from the fixed blackboard 110 along the length direction of the fixed blackboard 110. In other embodiments, the preset direction may also be parallel to the width direction of the fixed blackboard 110, which depends on actual needs and is not limited here. The movable blackboard 120 has a covering position and an unfolded position. When the movable blackboard 120 is in the covering position, the back of the movable blackboard 120 completely covers the writing surface of the fixed blackboard 110; when the movable blackboard 120 is in the unfolded position, the writing surface of the fixed blackboard 110 is completely exposed; the movable blackboard 120 usually needs to slide to the covering position or the unfolded position, and stay in the covering position or the unfolded position. The covering position and the unfolded position form the required staying positions of the movable blackboard 120.

[0039] In one embodiment, the first connecting member 212 and the second connecting member 130 may be magnetic blocks that can be magnetically attracted to each other, and the movable blackboard 120 and the damping part 210 are connected by the magnetic attraction of the first connecting member 212 and the second connecting member 130; in another embodiment, one of the first connecting member 212 and the second connecting member 130 may also be a connecting hook, and the other may be a connecting ring, and the movable blackboard 120 is connected to the damping part 210 by being hooked on the connecting ring through the connecting hook. Figure 1 The movable blackboard 120 is in the covering position; Figure 2 The movable blackboard 120 is in the expanded position; Figure 4 The active blackboard 120 is in the covering position, Figure 6 The movable blackboard 120 is in the covering position.

[0040] When the movable blackboard 120 in the present application needs to slide to the desired stop position, the second connecting member 130 is first connected to the first connecting member 212 to connect the movable blackboard 120 to the damping part 210; after the movable blackboard 120 is connected to the damping part 210, the damping part 210 will apply resistance to the movable blackboard 120 sliding along the preset direction to slow down the sliding speed of the movable blackboard 120, so that the movable blackboard 120 stays at the desired stop position; at this time, since the movable blackboard 120 remains connected to the damping part 210, if the movable blackboard 120 staying at the desired stop position wants to slide along the preset direction, it needs to overcome the resistance applied by the damping part 210 to the sliding movable blackboard 120 in order to slide. This design prevents the movable blackboard 120 staying at the desired stop position from sliding easily relative to the fixed blackboard 110, thereby ensuring the stability of the movable blackboard 120 staying at the desired stop position. The damping part 210 in the present application can not only provide buffering and deceleration for the movable blackboard 120 sliding along the preset direction, thereby extending the service life of the movable blackboard 120, but also apply resistance to the movable blackboard 120 at the desired stop position, limiting the sliding of the movable blackboard 120 along the preset direction, thereby effectively reducing the possibility of the movable blackboard 120 sliding relative to the fixed blackboard 110 during writing, and improving the writing effect; in addition, the damping part 210 in the present application can also effectively slow down the sliding speed of the movable blackboard 120 when it is subjected to violent pushing and pulling in the teaching scenario, and ultimately keep the movable blackboard 120 stable. Compared with ordinary rubber damping blocks, it is less prone to damage.

[0041] Reference Figure 3 、 Figure 5 、 Figure 7 as well as Figure 8In one embodiment, a first connecting structure is provided on the first connecting member 212, and a second connecting structure is provided on the second connecting member 130. One of the first connecting structure and the second connecting structure is a card joint 131, and the other is a card slot 2121. The second connecting member 130 is connected to the first connecting member 212 by being card-connected in the card slot 2121 through the card joint 131.

[0042] In this embodiment, the slot 2121 has two engaging groove walls arranged opposite to each other along a preset direction. After the engaging joint 131 is inserted into the slot 2121, the two surfaces of the engaging joint 131 arranged opposite to each other along the preset direction respectively maintain contact with the two engaging groove walls, so that the second connecting member 130 is stably connected to the first connecting member 212 during the process of sliding along the preset direction to the desired rest position, thereby ensuring that the damping part 210 can stably apply resistance to the movable blackboard 120 sliding along the preset direction. The engaging joint 131 and the slot 2121 used in conjunction with each other in this application not only enable the second connecting member 130 to be connected to the first connecting member 212, thereby allowing the damping part 210 to apply resistance to the movable blackboard 120 sliding along the preset direction, but also improve the convenience of connecting the second connecting member 130 to the first connecting member 212. Figure 3 、 Figure 5 、 Figure 7 as well as Figure 8 The card connector 131 is in a state of being inserted into the card slot 2121 .

[0043] Reference Figure 3 、 Figure 5 、 Figure 7 as well as Figure 8 In one embodiment, the card slot 2121 is provided on the first connecting member 212, and the card connector 131 is installed on the second connecting member 130. The card slot 2121 forms a first connecting structure, and the card connector 131 forms a second connecting structure. The above design not only effectively prevents the structural strength of the movable blackboard 120 from being affected by the presence of the card slot 2121, thereby ensuring the structural strength of the movable blackboard 120, but also allows the card slot 2121 to be maintained and serviced directly on the damping part 210 without involving the movable blackboard 120, thereby reducing the difficulty of operation. In other embodiments, the card connector 131 can also be installed on the first connecting member 212, and the card slot 2121 is provided on the second connecting member 130. The card connector 131 forms a first connecting structure, and the card slot 2121 forms a second connecting structure.

[0044] Reference Figure 3 、 Figure 5 as well as Figures 7 to 9In one embodiment, the damping portion 210 includes a damping member 211 and a first connecting member 212. The damping member 211 is a cylinder or a hydraulic cylinder. The damping member 211 has a piston rod, which is connected to the first connecting member 212 and can drive the first connecting member 212 to move along a preset direction.

[0045] In this embodiment, the first connecting member 212 is a connecting head, and its specific structure is determined according to actual needs and is not limited here; the length direction of the piston rod is parallel to the preset direction, and the movement direction of the piston rod is also parallel to the preset direction; the piston rod is fixedly connected to the first connecting member 212. The damping member 211 is able to apply resistance to the movable blackboard 120 sliding along the preset direction, which can not only effectively slow down the sliding speed of the movable blackboard 120 when it is subjected to violent pushing and pulling in the teaching scene, and ultimately keep the movable blackboard 120 stable, but also has the effect of limiting the sliding of the stationary movable blackboard 120. The first connecting member 212 is not only used to install and support the first connecting structure, but also to transmit the resistance applied by the damping member 211 to the movable blackboard 120. Figure 9 The card connector 131 is located outside the card slot 2121.

[0046] Reference Figure 3 、 Figure 5 as well as Figures 7 to 9 In one embodiment, the damping part 210 further includes a mounting member 213, the mounting member 213 is mounted on the fixed blackboard 110, and the damping member 211 is mounted on the mounting member 213; a slide groove 2131 is provided on the mounting member 213, and the first connecting member 212 is mounted in the slide groove 2131 and can slide in the slide groove 2131 along the extension direction of the slide groove 2131; the slide groove 2131 includes a guide groove section 2131a and a limit groove section 2131b, the extension direction of the guide groove section 2131a is parallel to the preset direction, and the limit groove section 2131b is parallel to the preset direction. The positioning groove section 2131b is located on the side of the guide groove section 2131a away from the damping member 211; the limiting groove section 2131b is connected to the guide groove section 2131a, and there is an angle between the extension direction of the limiting groove section 2131b and the extension direction of the guide groove section 2131a. The limiting groove section 2131b can prevent the first connecting member 212 from continuing to slide in the direction away from the damping member 211; when the first connecting member 212 is located in the limiting groove section 2131b, the second connecting member 130 can be separated from or connected to the first connecting member 212.

[0047] In this embodiment, the mounting member 213 is a mounting frame or a mounting strip, and the mounting member 213 is fixedly mounted on the fixed blackboard 110; the damping member 211 is fixedly mounted on the mounting member 213; the first connecting member 212 has a mounting block, which is mounted in the slide groove 2131 and can slide in the slide groove 2131 along the extension direction of the slide groove 2131. The first connecting member 212 slides in the slide groove 2131 through the mounting block, and the other structures of the first connecting member 212 are located outside the slide groove 2131; the limiting groove section 2131b is located below the guide groove section 2131a, and the angle between the extension direction of the limiting groove section 2131b and the extension direction of the guide groove section 2131a is 90°. In other embodiments, the angle between the extension direction of the limiting groove section 2131b and the guide groove section 2131a can also be other degrees. When the first connecting member 212 is located in the limiting groove section 2131 b , the card connector 131 can be pulled out of or inserted into the card slot 2121 .

[0048] When the movable blackboard 120 at the desired stop position needs to be separated from the damping part 210 to achieve smooth sliding, the movable blackboard 120 is first driven to move along the preset direction away from the damping member 211. During this process, the movable blackboard 120 will drive the first connecting member 212 to move along the preset direction away from the damping member 211; after the first connecting member 212 follows the movable blackboard 120 to slide from the guide groove section 2131a to the limiting groove section 2131b, the first connecting member 212 will be restricted by the groove wall of the limiting groove section 2131b, resulting in the first connecting member 212 being unable to follow As the movable blackboard 120 continues to move along the preset direction toward away from the damping member 211; at the same time, since there is an angle between the extension direction of the limiting groove section 2131b and the extension direction of the guide groove section 2131a, the posture of the first connecting member 212 in the limiting groove section 2131b will also change; in this case, the card joint 131 can be pulled out from the card slot 2121 under the action of the pulling force applied by the movable blackboard 120, so that the movable blackboard 120 can be separated from the damping part 210, and then the movable blackboard 120 can slide smoothly along the preset direction.

[0049] On this basis, when the movable blackboard 120 needs to slide to the desired stop position again, it first drives the movable blackboard 120 to move along the preset direction toward the damping member 211 until the card joint 131 is inserted into the card slot 2121, and then applies a thrust set toward the damping member 211 to the movable blackboard 120, so that the card joint 131 drives the first connecting member 212 to slide from the limiting groove section 2131b to the guide groove section 2131a; after the first connecting member 212 is in the guide groove section 2131a, under the action of the resistance applied by the damping member 211 to the movable blackboard 120 sliding along the preset direction, the movable blackboard 120 will gradually slow down and will eventually slide to the desired stop position. The provided guide groove section 2131a plays a guiding role; the provided limit groove section 2131b not only limits the first connecting member 212 from continuing to move in the direction away from the damping member 211 along with the movable blackboard 120, but also plays a role in adjusting the posture of the first connecting member 212, thereby facilitating the card connector 131 to be pulled out of or inserted into the card slot 2121.

[0050] Reference Figure 8 and Figure 9 In one embodiment, the damping portion 210 further includes a reset member 214, which is mounted on the mounting member 213 and connected to the first connecting member 212; when the first connecting member 212 is located in the limiting groove section 2131b, the reset member 214 applies a pulling force to the first connecting member 212 set toward the damping member 211.

[0051] In this embodiment, the reset member 214 is a reset spring, a first end of which is fixedly connected to the mounting member 213, and a second end of which is fixedly connected to the first connecting member 212. By adopting the reset member 214 of the present application, the first connecting member 212 in the limiting groove section 2131b can slide more smoothly into the guide groove section 2131a, thereby improving the smoothness of the reset operation of the first connecting member 212.

[0052] Reference Figure 3 、 Figure 5 as well as Figure 7 In one embodiment, the second connecting member 130 is installed on the movable blackboard 120, and a pulley 140 is installed on the second connecting member 130. The pulley 140 can slide on the fixed blackboard 110 along a preset direction.

[0053] In this embodiment, the second connecting member 130 is a connecting profile. Its length is parallel to the predetermined direction. The second connecting member 130 is mounted on the movable blackboard 120 via a connecting bar 150. The connecting bar 150 is L-shaped and is secured to the movable blackboard 120 via fasteners such as screws or bolts. The connecting bar 150 is also secured to the second connecting member 130 via fasteners such as screws or bolts. The second connecting member 130 not only connects the movable blackboard 120 to the damping unit 210 but also mounts and supports the pulleys 140. The pulleys 140 reduce the friction and resistance applied by the fixed blackboard 110 to the movable blackboard 120, improving the smoothness of the sliding of the movable blackboard 120 and extending its service life. To further improve the smoothness of the sliding of the movable blackboard 120, multiple pulleys 140 are provided. These pulleys 140 are spaced apart along the predetermined direction and form multiple pulley sets. In addition, in order to facilitate the installation of the pulley 140 on the second connecting member 130, the pulley 140 is fixedly installed on the second connecting member 130 by fastening members such as fastening screws or fastening bolts.

[0054] Reference Figure 5 and Figure 7 In one embodiment, a slide rail 111 is installed on the fixed blackboard 110, and the slide rail 111 is set along a preset direction. The pulley 140 is in contact with the slide rail 111, and the pulley 140 can slide on the slide rail 111 along the preset direction.

[0055] In this embodiment, the length direction of the slide rail 111 is parallel to the preset direction; the slide rail 111 prevents the pulley 140 from directly contacting the fixed blackboard 110, thereby extending the service life of the fixed blackboard 110. To facilitate the installation of the slide rail 111 on the fixed blackboard 110, the slide rail 111 is fixed to the fixed blackboard 110 using fasteners such as fastening bolts or fastening screws.

[0056] Reference Figures 1 to 7 In one embodiment, the damping assembly 200 includes two damping parts 210, which are arranged at intervals along a preset direction; two second connecting members 130 are provided on the movable blackboard 120, which are arranged at intervals along a preset direction, and the two second connecting members 130 are located between the two damping parts 210 and are respectively arranged in one-to-one correspondence with the two damping parts 210.

[0057] In this embodiment, the two second connecting members 130 are respectively installed at the two end positions of the movable blackboard 120 close to the damping part 210; the two damping parts 210 and the two second connecting members 130 are conducive to making the movable blackboard 120 slide and stop at two desired stop positions set along the preset direction, such as the covering position and the unfolding position, thereby broadening the application scenarios of the sliding blackboard and improving the user experience of the sliding blackboard.

[0058] Reference Figure 1 、 Figure 2 、 Figure 4 as well as Figure 6 In one embodiment, two sets of blackboard assemblies 100 are provided, spaced apart along a predetermined direction, allowing the two movable blackboards 120 to move toward or away from each other along the predetermined direction. Two sets of damping assemblies 200 are provided, each corresponding to one of the two sets of blackboard assemblies 100. These two sets of blackboard assemblies 100 ensure flexibility and adaptability within a limited space, improving teaching efficiency.

[0059] Reference Figures 1 to 9 According to another aspect of the present application, an embodiment of the present application also provides a blackboard device, which includes a display screen 300 and a sliding blackboard. The display screen 300 is located on one side of the fixed blackboard 110, and the movable blackboard 120 can cover the display screen 300.

[0060] In the embodiment of the present application, the display screen 300 is a conventional display device, and the specific structure is not limited here. The fixed blackboard 110 and the movable blackboard 120 each have a writing surface and a back surface arranged opposite to each other. The movable blackboard 120 is located on the side of the writing surface of the fixed blackboard 110 away from the back surface of the fixed blackboard 110. The movable blackboard 120 has a covering position and an extended position. When the movable blackboard 120 is in the covering position, the back surface of the movable blackboard 120 completely covers the writing surface of the fixed blackboard 110, and the display screen 300 is completely exposed to ensure normal use of the display screen 300. When the movable blackboard 120 is in the extended position, the writing surface of the fixed blackboard 110 is completely exposed, and the movable blackboard 120 covers the display screen 300 to protect the display screen 300.

[0061] In summary, the implementation of the push-pull blackboard and blackboard device provided in this embodiment has at least the following beneficial technical effects: when the movable blackboard 120 in the present application needs to slide to the desired stop position, the second connecting member 130 is first connected to the first connecting member 212 to connect the movable blackboard 120 to the damping part 210; after the movable blackboard 120 is connected to the damping part 210, the damping part 210 will apply resistance to the movable blackboard 120 sliding along the preset direction to slow down the sliding speed of the movable blackboard 120, so that the movable blackboard 120 stays at the desired stop position; at this time, since the movable blackboard 120 remains connected to the damping part 210, if the movable blackboard 120 staying at the desired stop position wants to slide along the preset direction, it needs to overcome the resistance applied by the damping part 210 to the sliding movable blackboard 120 in order to slide. This design prevents the movable blackboard 120 staying at the desired stop position from sliding easily relative to the fixed blackboard 110, thereby ensuring the stability of the movable blackboard 120 staying at the desired stop position. The damping part 210 in the present application can not only provide buffering and deceleration for the movable blackboard 120 sliding along the preset direction, thereby extending the service life of the movable blackboard 120, but also apply resistance to the movable blackboard 120 at the desired stop position, limiting the sliding of the movable blackboard 120 along the preset direction, thereby effectively reducing the possibility of the movable blackboard 120 sliding relative to the fixed blackboard 110 during writing, and improving the writing effect; in addition, the damping part 210 in the present application can also effectively slow down the sliding speed of the movable blackboard 120 when it is subjected to violent pushing and pulling in the teaching scenario, and ultimately keep the movable blackboard 120 stable. Compared with ordinary rubber damping blocks, it is less prone to damage.

[0062] The above is only a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, several equivalent obvious variations and / or equivalent replacements can be made, and these obvious variations and / or equivalent replacements should also be regarded as within the scope of protection of the present application.

Claims

1. A sliding blackboard, characterized in that: include: A blackboard assembly (100), comprising a fixed blackboard (110) and a movable blackboard (120), wherein the movable blackboard (120) is located on one side of the fixed blackboard (110) and is capable of sliding relative to the fixed blackboard (110) along a preset direction; A damping assembly (200) is mounted on the fixed blackboard (110), the damping assembly (200) comprising a damping portion (210), the damping portion (210) having a first connecting member (212), a second connecting member (130) being provided on the movable blackboard (120), the second connecting member (130) being detachably connected to the first connecting member (212), the movable blackboard (120) being connectable to the damping portion (210) via the connected first connecting member (212) and the second connecting member (130), the damping portion (210) being capable of applying resistance to the movable blackboard (120); and during the process of the movable blackboard (120) sliding to a desired stop position, the second connecting member (130) is connected to the first connecting member (212), and the damping portion (210) applies resistance to the movable blackboard (120) sliding along the preset direction.

2. The sliding blackboard according to claim 1, characterized in that: The first connecting member (212) is provided with a first connecting structure, and the second connecting member (130) is provided with a second connecting structure. One of the first connecting structure and the second connecting structure is a card joint (131), and the other is a card slot (2121). The second connecting member (130) is connected to the first connecting member (212) by being card-engaged in the card slot (2121) via the card joint (131).

3. The sliding blackboard according to claim 2, characterized in that: The card slot (2121) is provided on the first connecting member (212), and the card joint (131) is installed on the second connecting member (130). The card slot (2121) forms the first connecting structure, and the card joint (131) forms the second connecting structure.

4. The sliding blackboard according to claim 1, characterized in that: The damping part (210) comprises a damping member (211) and the first connecting member (212); the damping member (211) is a pneumatic cylinder or a hydraulic cylinder; the damping member (211) has a piston rod; the piston rod is connected to the first connecting member (212) and can drive the first connecting member (212) to move along the preset direction.

5. The sliding blackboard according to claim 4, characterized in that: The damping part (210) further comprises a mounting member (213), wherein the mounting member (213) is mounted on the fixed blackboard (110), and the damping member (211) is mounted on the mounting member (213); a sliding groove (2131) is provided on the mounting member (213), and the first connecting member (212) is mounted in the sliding groove (2131) and is capable of sliding in the sliding groove (2131) along an extension direction of the sliding groove (2131); The sliding groove (2131) comprises a guide groove section (2131a) and a limiting groove section (2131b), the extension direction of the guide groove section (2131a) is parallel to the preset direction, and the limiting groove section (2131b) is located on the side of the guide groove section (2131a) away from the damping member (211); the limiting groove section (2131b) is connected to the guide groove section (2131a), and an angle is formed between the extension direction of the limiting groove section (2131b) and the extension direction of the guide groove section (2131a), and the limiting groove section (2131b) can prevent the first connecting member (212) from continuing to slide in a direction away from the damping member (211); when the first connecting member (212) is located in the limiting groove section (2131b), the second connecting member (130) can be separated from or connected to the first connecting member (212).

6. The sliding blackboard according to claim 5, characterized in that: The damping portion (210) further comprises a reset member (214), the reset member (214) being mounted on the mounting member (213), and the reset member (214) being connected to the first connecting member (212); when the first connecting member (212) is located in the limiting groove section (2131b), the reset member (214) applies a pulling force to the first connecting member (212) that is arranged toward the damping member (211).

7. The sliding blackboard according to any one of claims 1 to 6, characterized in that: The second connecting member (130) is installed on the movable blackboard (120), and a pulley (140) is installed on the second connecting member (130), and the pulley (140) can slide on the fixed blackboard (110) along the preset direction.

8. The sliding blackboard according to claim 7, characterized in that: A slide rail (111) is installed on the fixed blackboard (110), the slide rail (111) is arranged along the preset direction, the pulley (140) is in contact with the slide rail (111), and the pulley (140) can slide on the slide rail (111) along the preset direction.

9. The sliding blackboard according to any one of claims 1 to 6, characterized in that: The damping assembly (200) comprises two damping parts (210), and the two damping parts (210) are arranged at intervals along the preset direction; the movable blackboard (120) is provided with two second connecting members (130), and the two second connecting members (130) are arranged at intervals along the preset direction, and the two second connecting members (130) are located between the two damping parts (210) and are respectively arranged in a one-to-one correspondence with the two damping parts (210); and / or, The number of the blackboard assemblies (100) is two groups, and the two groups of the blackboard assemblies (100) are arranged at intervals along the preset direction, and the two movable blackboards (120) can approach or move away from each other along the preset direction; the number of the damping assemblies (200) is two groups, and the two groups of the damping assemblies (200) are arranged in a one-to-one correspondence with the two groups of the blackboard assemblies (100).

10. A blackboard device, characterized in that: The invention comprises a display screen (300) and a push-pull blackboard according to any one of claims 1 to 9, wherein the display screen (300) is located on one side of the fixed blackboard (110), and the movable blackboard (120) can cover the display screen (300).

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