Folding plate frame

Abstract

The invention belongs to the technical field of white boards, and discloses a folding plate frame. The folding plate frame comprises a plate body and a support, wherein the plate body comprises a first plate piece and a second plate piece which are rotationally connected; the first plate is slidably arranged on the support, the plate body has an unfolded state and a folded state on the support, in the unfolded state, the first plate and the second plate are spliced, and in the folded state, the second plate is stacked on the first plate in the thickness direction of the plate body; the second plate rotates relative to the first plate and can drive the first plate to slide along the support so as to drive the plate body to be switched between the unfolded state and the folded state. According to the folding plate frame, the second plate piece is rotated to drive the first plate piece to slide on the support, so that the plate body is switched between the unfolding state and the folding state, the structure is simple, operation is convenient, different plate body states can be selected according to the site space condition, the writing area of the plate body is fully utilized, practicability is high, and the experience effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of whiteboard, in particular to a folding board stand. BACKGROUND

[0002] Whiteboard is a common reusable writing tool, which is widely used in teaching, conference discussion and personal note taking.

[0003] The existing whiteboard products are mostly of support structure, the whiteboard body is fixed on the support, and the whiteboard body is moved through the support, wherein the writable area of the whiteboard body is certain, in order to pursue larger writing area, the whiteboard body and the support are often made larger, which leads to larger space occupation of the whole whiteboard device, thereby being inconvenient for daily storage. SUMMARY

[0004] The present application aims to provide a folding board stand, which is simple in structure, convenient to operate, can change the state of the board body according to the space condition of the site and the use demand, so as to fully utilize the writing area of the board body, and has strong practicability.

[0005] To achieve the above purpose, the present application adopts the following technical scheme:

[0006] The present application provides a folding board stand, which comprises:

[0007] A board body comprising a first board piece and a second board piece connected rotatably;

[0008] A support, wherein the first board piece is slidingly arranged on the support, and the board body has an unfolded state and a folded state on the support, in the unfolded state, the first board piece and the second board piece are spliced, and in the folded state, the second board piece is stacked on the first board piece along the thickness direction of the board body;

[0009] The second board piece is rotatable relative to the first board piece, and can drive the first board piece to slide along the support, so as to drive the board body to switch between the unfolded state and the folded state.

[0010] Preferably, when the board body is in the unfolded state and the folded state, the vertical center line of the board body is aligned with the vertical center line of the support front and back.

[0011] Preferably, the first board piece and the second board piece are hingedly connected, and the folding board stand further comprises a linkage mechanism, one end of the linkage mechanism is rotatably connected to the support, and the other end of the linkage mechanism is rotatably connected to the second board piece.

[0012] When the second plate member rotates forward, the second plate member applies a force to the first plate member in a first direction under the action of the linkage mechanism, so that the first plate member slides in the first direction; when the second plate member rotates reversely, the second plate member applies a force to the first plate member in a direction opposite to the first direction under the action of the linkage mechanism, so that the first plate member slides relative to the support in a direction opposite to the first direction.

[0013] Preferably, the linkage mechanism comprises a first connecting rod and a second connecting rod, a first end of the first connecting rod is rotationally connected to the support, a second end of the first connecting rod is rotationally connected to the second connecting rod between two ends of the second connecting rod, a first end of the second connecting rod is rotationally connected to the second plate member, and a second end of the second connecting rod is slidingly arranged on the support.

[0014] The rotation of the second plate member can drive the second end of the second connecting rod to slide relative to the support, and under the action of the first connecting rod, the first plate member slides relative to the support.

[0015] Preferably, the support is provided with a guide groove extending in the first direction, and the second end of the second connecting rod is rotationally arranged in the guide groove and can slide along the guide groove.

[0016] Preferably, one of the support and the first plate member is provided with a guide rail extending in the first direction, and the other is provided with a sliding member slidingly matched with the guide rail.

[0017] Preferably, one of the support and the first plate member is provided with a first auxiliary roller, and the other is provided with a track extending in the first direction, and the first auxiliary roller rolls against the track.

[0018] Preferably, the first plate member has opposite first front and back plate surfaces, the first back plate surface is connected to the support, the second plate member has opposite second front and back plate surfaces, and the first plate member and / or the second plate member is provided with a magnetic attraction member.

[0019] When the plate body is in the folded state, the first front plate surface faces the second front plate surface, the second back plate surface forms a writing surface, and the first front plate surface and the second front plate surface are attracted by the magnetic attraction member.

[0020] Preferably, the first plate member has opposite first front and back plate surfaces, the first back plate surface is connected to the support, the second plate member has opposite second front and back plate surfaces, and the first plate member and / or the support is provided with a magnetic attraction member.

[0021] When the plate body is in the unfolded state, the first front plate surface and the second front plate surface are spliced to form a flat writing surface, the second back plate surface abuts against the support, and the second plate member and the support are adsorbed through the magnetic adsorption member.

[0022] Preferably, the support comprises a fixedly connected support leg and a support body, the first plate member is slidingly connected to the support body, and a walking wheel is arranged on the support leg.

[0023] Preferably, the folding plate support further comprises a cover plate arranged on the side of the support body away from the plate body, and / or a handle is arranged on the second plate member for holding.

[0024] Preferably, a second auxiliary roller is arranged on the support, and when the plate body is in the folded state, the first plate member abuts against the second auxiliary roller.

[0025] The folding plate support provided by the present application has the following beneficial effects:

[0026] The folding plate support provided by the present application comprises a plate body and a support, the plate body comprises a first plate member and a second plate member connected in rotation, in the unfolded state, the first plate member and the second plate member are spliced flat, at this time, a user can write on the flat whole formed by the two plate members, thereby expanding the writing area; in the folded state, the second plate member is stacked on the first plate member along the thickness direction of the plate body, at this time, the user writes on the local plane formed by the two plate members folded, thereby meeting the writing requirement, reducing the occupied space of the folding plate support, and facilitating storage after use; the folding plate support adjusts the position of the first plate member relative to the support by rotating the second plate member to drive the first plate member to slide on the support, thereby converting the plate body between the unfolded state and the folded state, and one-handed adjustment is achieved in one step, the structure is simple, the operation is convenient, different plate body states can be selected according to the space of the site, the writing area of the plate body is fully utilized, and the practicality is high and the experience effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a first perspective structural schematic view of the folding plate support when the plate body is in the folded state provided by the embodiment of the present application;

[0028] Figure 2 is a second perspective structural schematic view of the folding plate support when the plate body is in the folded state provided by the embodiment of the present application;

[0029] Figure 3 is a first perspective structural schematic view of the folding plate support when the plate body is in the unfolded state provided by the embodiment of the present application;

[0030] Figure 4is a second perspective structural schematic view of the folding plate rack when the plate body is in the unfolded state provided by the embodiment of the present application;

[0031] Figure 5 is a structural schematic view of the folding plate rack in the rotating process of the second plate provided by the embodiment of the present application;

[0032] Figure 6 is Figure 5 is a local enlarged view of A in the middle.

[0033] in the figure:

[0034] 1-plate body; 11-first plate; 111-guide rail; 112-first auxiliary roller; 113-first magnetic attraction member; 12-second plate; 121-second magnetic attraction member; 122-third magnetic attraction member; 123-handle;

[0035] 2-support; 21-leg; 211-traveling wheel; 22-frame body; 221-fourth magnetic attraction member; 222-guide groove; 223-second auxiliary roller; 23-rail;

[0036] 3-linkage mechanism; 31-first connecting rod; 32-second connecting rod;

[0037] 4-cover plate. EMBODIMENT

[0038] The present application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, not all the structures.

[0039] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship 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.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0041] In the description of the present embodiment, the terms "upper", "lower", "right", "left" and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0042] As shown in Figures 1 to 4 The present application provides a folding board stand, which comprises a board body 1 and a support 2, the board body 1 comprises a first board piece 11 and a second board piece 12 connected by rotation; the first board piece 11 is slidingly arranged on the support 2, and the board body 1 has an unfolded state and a folded state on the support 2, in the unfolded state, the first board piece 11 and the second board piece 12 are spliced, and in the folded state, the second board piece 12 is stacked on the first board piece 11 along the thickness direction of the board body 1; the second board piece 12 is rotatable relative to the first board piece 11 to drive the first board piece 11 to slide along the support 2, so as to drive the board body 1 to switch between the unfolded state and the folded state.

[0043] For the convenience of understanding, the following mainly takes whiteboard as an example for illustration, i.e. the first board piece 11 and the second board piece 12 are both writable whiteboards, which can be physical whiteboards or electronic whiteboards. In other embodiments, the first board piece 11 and the second board piece 12 can also be electronic display screens, blackboards, magnetic bulletin boards, interactive touch screens and the like similar devices.

[0044] In the embodiment, in the unfolded state, the first plate 11 and the second plate 12 are flatly spliced to form a larger writing area, and the user can write on the flat whole formed by the splicing of the two plates, thereby expanding the writing area; in the folded state, the second plate 12 is stacked on the first plate 11 along the thickness direction of the plate body 1, and the user writes on the local plane formed by the folding of the two plates, thereby meeting the writing requirement, reducing the occupied space of the folding board stand, and facilitating storage after use; the folding board stand drives the first plate 11 to slide on the support 2 by rotating the second plate 12, so as to realize the conversion between the unfolded state and the folded state of the plate body 1, and at the same time, the plate body is pulled to the middle of the support, thereby achieving one-hand adjustment and one-step operation, simple structure, convenient operation, and the ability to select different states of the plate body 1 according to the space of the site, fully utilize the writing area of the plate body, and good practicality and experience effect.

[0045] The specific shape of the first plate 11 and the second plate 12 can be set according to actual needs. For example, when the size of the second plate 12 is different from that of the first plate 11, in the folded state, the second plate 12 can be partially stacked on the first plate 11, or the second plate 12 can be partially overlapped with the first plate 11; when the shape and size of the second plate 12 are the same as those of the first plate 11, in the folded state, the second plate 12 is completely and directly stacked on the first plate 11, or the second plate 12 is partially overlapped with the first plate 11. In the embodiment, as shown in Figure 1 and 3 The first plate 11 and the second plate 12 are both rectangular plate structures commonly used in the field, and the sizes of the two are the same; in the unfolded state, the first plate 11 and the second plate 12 are flatly spliced, and in the folded state, the second plate 12 is completely overlapped with the first plate 11.

[0046] Further, in order to ensure the stability of the folding board stand during use, as shown in Figures 1 to 4 When the plate body 1 is in the unfolded state and the folded state, the vertical center line of the plate body 1 is aligned with the vertical center line of the support 2 front and back; that is, whether the plate body 1 is in the unfolded state or the folded state, the plate body 1 is in the middle position of the support 2 (the middle position here refers to the middle position of the support 2 in the left-right direction when the whiteboard is normally used). In this way, the visual symmetry and aesthetics can be ensured, and the support 2 can stably support the plate body 1 in the unfolded state and the folded state.

[0047] For example, the vertical center line of the plate body 1 is a straight line where the center point of the line connecting the two ends of the plate body 1 in the first direction is located, and the straight line is perpendicular to the ground. In this embodiment, the first plate member 11 and the second plate member 12 are rectangular plates that are completely the same in shape and size, and the mass of both is uniformly distributed, so the vertical center line of the plate body 1 is the center of gravity line of the plate body 1, and the support 2 is also a symmetrical structure, and the mass on both sides of the symmetrical center line is the same, so the vertical center line of the support 2 is the center of gravity line of the support 2; it can be understood that when the plate body 1 is in the unfolded state and the folded state, the middle position of the plate body 1 in the first direction is aligned with the middle position of the support 2 in the first direction, that is, when the plate body 1 is in the unfolded state and the folded state, the folding plate rack is symmetrical in the first direction, so that the center of gravity of the folding plate rack is in the middle in the folded state and the unfolded state, preventing the folding plate rack from rolling over.

[0048] As shown in Figure 2 , Figure 4 and Figure 5 , the first plate member 11 and the second plate member 12 are hingedly connected, and the folding plate rack further comprises a linkage mechanism 3, one end of the linkage mechanism 3 being rotatably connected to the support 2, and the other end of the linkage mechanism 3 being rotatably connected to the second plate member 12; when the second plate member 12 rotates forward, under the action of the linkage mechanism 3, the second plate member 12 applies a force in the first direction to the first plate member 11, so that the first plate member 11 slides in the first direction, thereby converting the plate body 1 from the folded state to the unfolded state; when the second plate member 12 rotates reversely, under the action of the linkage mechanism 3, the second plate member 12 applies a force in the opposite direction of the first direction to the first plate member 11, so that the first plate member 11 slides in the opposite direction of the first direction relative to the support 2, thereby converting the plate body 1 from the unfolded state to the folded state; in this embodiment, the two adjacent side surfaces of the first plate member 11 and the second plate member 12 are rotatably connected by an embedded hinge, and the first direction is the direction of the long side of the plate body 1 when the plate body 1 is in the unfolded state, and the direction is from the second plate member 12 to the first plate member 11; when the second plate member 12 rotates forward, the second plate member 12 can cooperate with the linkage mechanism 3 to apply a force in the first direction to the first plate member 11, so that the first plate member 11 slides on the support 2 in the first direction until the plate body 1 switches to the unfolded state; on the contrary, when the second plate member 12 rotates reversely, the second plate member 12 can cooperate with the linkage mechanism 3 to apply a force in the opposite direction of the first direction to the first plate member 11, so that the first plate member 11 slides on the support 2 in the opposite direction of the first direction until the plate body 1 switches to the folded state.

[0049] In the above embodiment, forward rotation of the second plate member 12 can simultaneously realize translation and unfolding of the plate body 1; reverse rotation of the second plate member 12 can simultaneously realize translation and folding of the plate body 1, which is simple and fast, and can quickly switch the display content.

[0050] The specific structure of the linkage mechanism 3 can be set according to actual conditions, as long as the first plate 11 and the second plate 12 can be linked and matched, and finally the plate body 1 can be switched between the unfolded state and the folded state. In the embodiment, as shown in Figure 5 and Figure 6 , the linkage mechanism 3 includes a first connecting rod 31 and a second connecting rod 32, the first end of the first connecting rod 31 is rotationally connected to the support 2, the second end of the first connecting rod 31 is rotationally connected between the two ends of the second connecting rod 32, the first end of the second connecting rod 32 is rotationally connected to the second plate 12, and the second end of the second connecting rod 32 is slidingly arranged on the support 2; the second plate 12 can rotationally drive the second end of the second connecting rod 32 to slide relative to the support 2, and under the action of the first connecting rod 31, the first plate 11 slides relative to the support 2.

[0051] The linkage mechanism 3 can be arranged on the top of the plate body 1 or on the bottom of the plate body 1; in the embodiment, as shown in Figure 5 and Figure 6 , the linkage mechanism 3 is arranged on the bottom of the plate body 1, thereby enhancing the aesthetics of the folding plate stand. It can be understood that since the first end of the first connecting rod 31 is rotationally connected to the support 2, the second end of the second connecting rod 32 is slidingly arranged on the support 2, and the second end of the first connecting rod 31 is rotationally connected between the two ends of the second connecting rod 32, so when the second end of the second connecting rod 32 slides relative to the support 2, the movement trajectory of the first end of the second connecting rod 32 is limited.

[0052] When the second plate 12 rotates forward, the second plate 12 is limited by the movement trajectory of the first end of the second connecting rod 32, and the second plate 12 will move in the first direction while rotating forward, thereby pushing the first plate 11 to slide on the support 2 in the first direction until the first plate 11 and the second plate 12 are flatly combined, at which time the plate body 1 is in the unfolded state; when the second plate 12 rotates reversely, the second plate 12 is limited by the movement trajectory of the first end of the second connecting rod 32, and the second plate 12 moves in the opposite direction of the first direction while rotating reversely, thereby pulling the first plate 11 to slide on the support 2 in the opposite direction of the first direction until it slides to the middle position of the support 2, at which time the second plate 12 is directly opposite to the first plate 11.

[0053] As shown in Figure 5 and Figure 6 , in order to ensure the stability of the second connecting rod 32 when sliding on the support 2, a guide groove 222 extending in the first direction is arranged on the support 2, and the second end of the second connecting rod 32 is rotationally arranged in the guide groove 222 and can slide along the guide groove 222.

[0054] The first plate member 11 is slidingly arranged on the support 2, one of the support 2 and the first plate member 11 is provided with a guide rail 111 extending along the first direction, and the other is provided with a sliding member slidingly matched with the guide rail 111. In the embodiment, the guide rail 111 is fixedly arranged on the first plate member 11, and the sliding member is arranged on the support 2. The guide rail 111 has an embedded groove, and the sliding member is a roller embeddedly matched with the embedded groove of the guide rail 111. The guide rail 111 can be slidingly matched with the support 2 through the roller. In another embodiment, the guide rail 111 is fixedly arranged on the first plate member 11, and the sliding member is arranged on the support 2. The sliding member is a fixed outer rail embeddedly matched with the guide rail 111. The fixed outer rail has an embedded sliding channel, and the guide rail 111 is embedded in the embedded sliding channel of the fixed outer rail and slidingly matched with the fixed outer rail through a ball. In order to improve the stability of the sliding matching of the first plate member 11 and the support 2, two sliding members are arranged on the support 2 along the height direction, and two guide rails 111 are arranged on the first plate member 11 along the height direction.

[0055] One of the support 2 and the first plate member 11 is provided with a first auxiliary roller 112, and the other is provided with a track 23 extending along the first direction. The first auxiliary roller 112 is rollingly abutted against the track 23. The first auxiliary roller 112 and the track 23 are matched with each other, further improving the stability and reliability of the first plate member 11 sliding on the support 2. In the embodiment, as shown in Figure 2 , the first auxiliary roller 112 is rotationally arranged on the first plate member 11, and the track 23 is fixedly arranged on the support 2.

[0056] The first plate member 11 has opposite first front and back plate surfaces, and the first back plate surface is connected to the support 2. The second plate member 12 has opposite second front and back plate surfaces, and the first plate member 11 and / or the second plate member 12 is provided with a magnetic attraction member. When the board body 1 is in the folded state, the first front plate surface is opposite to the second front plate surface, and the second back plate surface forms a writing surface. The first front plate surface and the second front plate surface are attracted by the magnetic attraction member, so that the board body 1 can be firmly in the folded state and cannot be easily pulled open, thereby improving the stability during writing.

[0057] The first plate member 11 has opposite first front and back plate surfaces, and the first back plate surface is connected to the support 2. The second plate member 12 has opposite second front and back plate surfaces, and the first plate member 11 and / or the support 2 is provided with a magnetic attraction member. When the board body 1 is in the unfolded state, the first front plate surface and the second front plate surface are spliced to form a flat writing surface, and the second back plate surface is abutted against the support 2. The second plate member 12 and the support 2 are attracted by the magnetic attraction member, so that the board body 1 can be firmly in the unfolded state and cannot be easily folded, thereby improving the writing stability.

[0058] In the embodiment, as shown in Figure 3 and Figure 5As shown, the first front plate surface is fixedly provided with a first magnetic attraction member 113, the second front plate surface is fixedly provided with a second magnetic attraction member 121, the bottom end surface of the second plate member 12 is fixedly provided with a third magnetic attraction member 122, and the support 2 is provided with a fourth magnetic attraction member 221 corresponding to the third magnetic attraction member 122. When the plate body 1 is in the folded state, the first front plate surface faces the second front plate surface, and at this time the first magnetic attraction member 113 is adsorbed to the second magnetic attraction member 121; when the plate body 1 is in the unfolded state, the second plate member 12 abuts against the support 2, and at this time the third magnetic attraction member 122 is adsorbed to the fourth magnetic attraction member 221.

[0059] The specific structure of the support 2 can be set according to actual needs. Exemplarily, as shown in Figure 1 and Figure 2 , the support 2 comprises a fixedly connected support leg 21 and a support body 22, the first plate member 11 is slidingly connected to the support body 22, and the support leg 21 is provided with a walking wheel 211; it can be understood that the track 23 cooperating with the first auxiliary roller 112 and the sliding member cooperating with the guide rail 111 are both provided on the support body 22, the guide groove 222 is opened at the bottom of the support body 22, and the first end of the first connecting rod 31 is rotationally connected to the bottom of the support body 22.

[0060] The walking wheel 211 comprises a wheel body and a brake member, the wheel body is rotationally arranged on the support leg 21 so as to facilitate moving the folding board support, and the brake member is movably arranged on the support leg 21, the brake member can abut against the wheel body so that the wheel body remains stationary under the action of friction.

[0061] As shown in Figure 2 and Figure 4 , the folding board support further comprises a cover plate 4, the cover plate 4 is arranged on the side of the support 2 away from the plate body 1, and the cover plate 4 is detachably connected to the support 2 by magnetic attraction, bolt connection or buckle connection, etc., and the specific connection mode is not limited here; the cover plate 4 can cover the first auxiliary roller 112, the track 23 and the linkage mechanism 3 from the side of the support 2 away from the plate body 1, so as to protect the first auxiliary roller 112, the track 23 and the linkage mechanism 3, and also improve the overall appearance of the product.

[0062] In the embodiment, the frame 22 has a first end and a second end along the length direction, when the board 1 is in the unfolded state, the end of the frame 22 close to the first board 11 is the first end, and the end close to the second board 12 is the second end. The lengths of the first board 11 and the second board 12 are both greater than the length of the frame 22, thus when the board 1 is in the folded state, the first board 11 covers the first end and the second end of the frame 22 at the same time, the second end of the frame 22 is provided with a second auxiliary roller 223, when the board 1 is in the folded state, the side of the first board 11 close to the second board 12 abuts against the second auxiliary roller 223, the second auxiliary roller 223 provides reliable support for the first board 11 and reduces the friction between the first board 11 and the frame 22 when sliding.

[0063] The second board 12 is provided with a handle 123 for hand holding, thus facilitating the user to pull and rotate the second board 12, and improving the practicability of the folding board frame.

[0064] Obviously, the above embodiment of the present application is only an example for clear illustration of the present application, and is not a limitation on the embodiments of the present application. Those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A folding frame, characterized in that, include: The plate body (1) includes a first plate (11) and a second plate (12) that are rotatably connected. The bracket (2) has the first plate (11) slidably disposed on the bracket (2). The plate (1) has an unfolded state and a folded state on the bracket (2). In the unfolded state, the first plate (11) and the second plate (12) are spliced ​​together. In the folded state, the second plate (12) is stacked on the first plate (11) along the thickness direction of the plate (1). The second plate (12) can rotate relative to the first plate (11) while driving the first plate (11) to slide along the bracket (2) to drive the plate (1) to switch between the unfolded state and the folded state.

2. The folding frame according to claim 1, characterized in that, When the plate (1) is in the unfolded state and the folded state, the vertical center line of the plate (1) is aligned with the vertical center line of the bracket (2) front and back.

3. The folding frame according to claim 1, characterized in that, The first plate (11) and the second plate (12) are hinged together. The folding frame also includes a linkage mechanism (3). One end of the linkage mechanism (3) is rotatably connected to the bracket (2), and the other end of the linkage mechanism (3) is rotatably connected to the second plate (12). When the second plate (12) rotates in the forward direction, under the action of the linkage mechanism (3), the second plate (12) applies a force along the first direction to the first plate (11), causing the first plate (11) to slide along the first direction; when the second plate (12) rotates in the reverse direction, under the action of the linkage mechanism (3), the second plate (12) applies a force in the opposite direction to the first plate (11), causing the first plate (11) to slide relative to the bracket (2) in the opposite direction to the first direction.

4. The folding frame according to claim 3, characterized in that, The linkage mechanism (3) includes a first link (31) and a second link (32). The first end of the first link (31) is rotatably connected to the bracket (2), the second end of the first link (31) is rotatably connected between the two ends of the second link (32), the first end of the second link (32) is rotatably connected to the second plate (12), and the second end of the second link (32) is slidably disposed on the bracket (2). The rotation of the second plate (12) can drive the second end of the second link (32) to slide relative to the bracket (2), while under the action of the first link (31), the first plate (11) slides relative to the bracket (2).

5. The folding frame according to claim 4, characterized in that, The bracket (2) is provided with a guide groove (222) extending along the first direction. The second end of the second connecting rod (32) is rotatably disposed in the guide groove (222) and can slide along the guide groove (222).

6. The folding frame according to claim 1, characterized in that, One of the bracket (2) and the first plate (11) is provided with a guide rail (111) extending in a first direction, and the other is provided with a sliding member that slides in cooperation with the guide rail (111).

7. The folding frame according to claim 6, characterized in that, One of the bracket (2) and the first plate (11) is provided with a first auxiliary roller (112), and the other is provided with a track (23) extending along the first direction. The first auxiliary roller (112) rolls against the track (23).

8. The folding frame according to claim 1, characterized in that, The first plate (11) has a first front plate surface and a first rear plate surface, the first rear plate surface being connected to the bracket (2), the second plate (12) has a second front plate surface and a second rear plate surface, and magnetic suction elements are provided on the first plate (11) and / or the second plate (12); When the board (1) is in the folded state, the first front board surface faces the second front board surface, the second rear board surface forms a writing surface, and the first front board surface and the second front board surface are attracted by the magnetic attraction element.

9. The folding frame according to claim 1, characterized in that, The first plate (11) has a first front plate surface and a first rear plate surface, the first rear plate surface being connected to the bracket (2), the second plate (12) has a second front plate surface and a second rear plate surface, and the first plate (11) and / or the bracket (2) are provided with magnetic suction elements; When the plate (1) is in the unfolded state, the first front plate and the second front plate are spliced ​​together to form a flat writing surface, the second rear plate abuts against the bracket (2), and the second plate (12) and the bracket (2) are attracted by the magnetic component.

10. The folding frame according to any one of claims 1-9, characterized in that, The support (2) includes a fixedly connected support leg (21) and a frame (22), the first plate (11) is slidably connected to the frame (22), and the support leg (21) is provided with a walking wheel (211).

11. The folding frame according to any one of claims 1-9, characterized in that, The folding frame also includes a cover plate (4), which is disposed on the side of the support (2) opposite to the plate body (1); and / or, The second plate (12) is provided with a handle (123) for holding.

12. The folding frame according to any one of claims 1-9, characterized in that, The bracket (2) is provided with a second auxiliary roller (223). When the plate (1) is in the folded state, the first plate (11) abuts against the second auxiliary roller (223).

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