active layer plate carrier

Abstract

The application belongs to the technical field of furniture and provides a movable layer plate support, which comprises a mounting seat and a mounting sleeve. The mounting seat comprises a base and a plug-in block and an elastic buckle arranged on the base. The plug-in block is used for being fixed on a side plate. The mounting sleeve is used for being embedded in the bottom of a movable layer plate. The bottom of the mounting sleeve is provided with a plug-in groove and a clamping groove. The plug-in groove and the plug-in block are plug-in matched in the vertical direction, and the clamping groove and the elastic buckle are clamped matched in the vertical direction, so that the mounting sleeve is supported on the base. The plug-in matching of the plug-in block and the plug-in groove and the clamping matching of the elastic buckle and the clamping groove can effectively limit the movement of the movable layer plate relative to the side plate, and the movable layer plate can be stably connected to the side plate. When the movable layer plate is subjected to an external force, the movable layer plate is not prone to warping, loosening or even falling, and the safety hazard caused by the loosening of the movable layer plate can be avoided as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, in particular to an active layer plate support. BACKGROUND

[0002] The active layer plate support is a structure for supporting the active layer plate in the cabinet furniture. In the prior art, the active layer plate usually comprises a support arranged horizontally, one end of the support is fixed to the side plate, and the other end of the support is used to support the active layer plate. In the above prior art, the active layer plate is prone to warping, loosening or even falling after being subjected to external force. SUMMARY

[0003] The purpose of the embodiment of the present application is to provide an active layer plate support to solve the technical problem that the active layer plate is prone to warping, loosening or even falling after being subjected to external force in the prior art.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is to provide an active layer plate support, comprising:

[0005] The mounting seat comprises a base and a plug-in block and an elastic buckle arranged on the base, the plug-in block and the elastic buckle are arranged in sequence along the first horizontal direction, and the plug-in block is used to be fixed to the side plate;

[0006] The mounting sleeve is used to be embedded in the bottom of the active layer plate, the bottom of the mounting sleeve is provided with a plug-in slot and a clamping slot, the plug-in slot and the clamping slot are arranged in sequence along the first horizontal direction, the plug-in slot is open on the side away from the clamping slot, the plug-in slot and the plug-in block are inserted and matched along the vertical direction, and the clamping slot and the elastic buckle are clamped and matched along the vertical direction, so that the mounting sleeve is supported on the base.

[0007] In one of the embodiments, the elastic buckle comprises a connecting portion arranged on the base and an elastic clamping head connected to the top end of the connecting portion, the width of the elastic clamping head is greater than the width of the connecting portion; the clamping slot comprises a guide slot and a locking slot arranged in sequence along the direction from the bottom to the top of the mounting sleeve, the width of the guide slot gradually increases along the direction from the bottom to the top of the mounting sleeve, the width of the locking slot at the connection with the guide slot is less than the width of the elastic clamping head, and the width of the end of the locking slot away from the guide slot is greater than or equal to the width of the elastic clamping head.

[0008] In one of the embodiments, the size of the insertion slot in a second horizontal direction perpendicular to the first horizontal direction continuously increases or increases in steps in a direction from the insertion slot to the clamping slot, and the size of the insertion block in the second horizontal direction continuously increases or increases in steps in a direction from the insertion block to the elastic buckle.

[0009] In one of the embodiments, the insertion slot comprises a first insertion slot and a second insertion slot which are sequentially connected in the first horizontal direction, the second insertion slot is close to the clamping slot, the first insertion slot is open on a side away from the second insertion slot, the size of the first insertion slot in the second horizontal direction is smaller than the size of the second insertion slot in the second horizontal direction; the insertion block comprises a first insertion part and a second insertion part which are sequentially connected in the first horizontal direction, the second insertion part is close to the elastic buckle, the size of the first insertion part in the second horizontal direction is smaller than the size of the second insertion part in the second horizontal direction, the first insertion part is in insertion fit with the first insertion slot, and the second insertion part is in insertion fit with the second insertion slot.

[0010] In one of the embodiments, the size of the first insertion slot in the second horizontal direction gradually decreases or first gradually decreases and then remains unchanged in a direction from the bottom to the top of the mounting sleeve; and / or, the size of the second insertion slot in the second horizontal direction gradually decreases or first gradually decreases and then remains unchanged in a direction from the bottom to the top of the mounting sleeve.

[0011] In one of the embodiments, a first step surface is formed at the connection between the second insertion slot and the first insertion slot, the first step surface is arranged to be inclined with respect to the vertical direction, and the first step surface gradually approaches the clamping slot in a direction from the bottom to the top of the mounting sleeve; a surface of the second insertion part to which the first insertion part is connected is a second step surface arranged to be inclined with respect to the vertical direction, the second step surface gradually approaches the elastic buckle in a direction from the bottom to the top of the insertion block, and the second step surface is used to slide fit with the first step surface.

[0012] In one of the embodiments, the movable floor support further comprises a fastener, the insertion block is provided with a fastening hole extending in the first horizontal direction, and the fastener is arranged to pass through the fastening hole and be connected to the side plate.

[0013] In one of the embodiments, the movable floor further comprises an insertion rod, the insertion rod is arranged horizontally on a side of the insertion block away from the elastic buckle, and is used to be inserted and fixed to the side plate.

[0014] In one of the embodiments, the outer peripheral wall of the mounting sleeve is a part of a cylindrical surface, and a plurality of protrusions extending in the axial direction of the mounting sleeve are arranged on the outer peripheral wall of the mounting sleeve.

[0015] In one of the embodiments, the outer side wall of the mounting sleeve is provided with a plurality of racks extending along the circumference of the mounting sleeve.

[0016] The movable floorboard holder provided by the application has the advantages that, compared with the prior art, the movable floorboard holder is provided with the insertion block and the elastic buckle on the base of the mounting seat, and is provided with the insertion slot and the clamping slot on the bottom of the mounting sleeve. In use, the insertion block is first fixed on the side plate, then the mounting sleeve is embedded in the movable floorboard, and then the mounting sleeve and the movable floorboard are placed on the base of the mounting seat, so that the insertion block is inserted into the insertion slot and the elastic buckle is clamped in the clamping slot. In this way, the insertion of the insertion block and the insertion slot and the clamping of the elastic buckle and the clamping slot can effectively limit the movement of the movable floorboard relative to the side plate, and the movable floorboard can be stably connected to the side plate, so that the movable floorboard is not prone to warping, loosening or even falling when subjected to external force, and the safety hazard caused by loosening of the movable floorboard can be avoided as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structure schematic diagram of the movable floorboard holder from the first perspective provided by the embodiments of the application is shown in the figure.

[0019] Figure 2 The structure schematic diagram of the movable floorboard holder from the second perspective provided by the embodiments of the application is shown in the figure.

[0020] Figure 3 The exploded structure schematic diagram of the movable floorboard holder provided by the embodiments of the application is shown in the figure.

[0021] Figure 4 The front view of the movable floorboard holder provided by the embodiments of the application is shown in the figure.

[0022] Figure 5 The structure schematic diagram of the mounting seat of the movable floorboard holder provided by the embodiments of the application is shown in the figure.

[0023] Figure 6 The structure schematic diagram of the mounting sleeve of the movable floorboard holder provided by the embodiments of the application is shown in the figure.

[0024] Figure 7 The top view of the mounting seat of the movable floorboard holder provided by the embodiments of the application is shown in the figure.

[0025] Figure 8 A rear view of the mounting seat of the activity layer plate support provided by the embodiment of the present application.

[0026] In the drawings:

[0027] 100 - mounting seat; 110 - base; 120 - plug block; 1201 - fastening hole; 121 - first plug part; 122 - second plug part; 1221 - second stepped surface; 130 - elastic buckle; 131 - connecting part; 132 - elastic clamping joint;

[0028] 200 - mounting sleeve; 210 - plug slot; 211 - first slot; 212 - second slot; 213 - first stepped surface; 220 - clamping slot; 221 - guide slot; 222 - locking slot; 230 - convex strip; 240 - rack;

[0029] 300 - fastener. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 limiting the present application.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0033] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0034] Please refer to Figures 1 to 3 The movable floor support provided by the embodiment of the application comprises a mounting seat 100 and a mounting sleeve 200. The mounting seat 100 comprises a base 110 and a plug-in block 120 and an elastic buckle 130 arranged on the base 110. The plug-in block 120 and the elastic buckle 130 are arranged in sequence along a first horizontal direction X. The plug-in block 120 is used for being fixed to an external side plate (not shown in the figure). The mounting sleeve 200 is used for being embedded in the bottom of an external movable floor (not shown in the figure). The bottom of the mounting sleeve 200 is provided with a plug-in groove 210 and a clamping groove 220. The plug-in groove 210 and the clamping groove 220 are arranged in sequence along the first horizontal direction X. The plug-in groove 210 is open on the side away from the clamping groove 220. The plug-in groove 210 is plug-in matched with the plug-in block 120 along a vertical direction Z. The clamping groove 220 is clamping matched with the elastic buckle 130 along the vertical direction Z, so that the mounting sleeve 200 is supported on the base 110.

[0035] Specifically, the mounting sleeve 200 can be cylindrical, cylindrical or prismatic. The mounting sleeve 200 can also be other regular or irregular shapes. The top of the plug-in groove 210 can be open or closed. The clamping groove 220 can be in communication with the plug-in groove 210 or isolated from the plug-in groove 210. The side of the clamping groove 220 away from the plug-in groove 210 can be open or closed. The top of the clamping groove 220 can also be open or closed. In the illustrated embodiment, the mounting sleeve 200 is cylindrical. The top of the plug-in groove 210 is open. The clamping groove 220 is in communication with the plug-in groove 210. The side of the clamping groove 220 away from the plug-in groove 210 is open. The top of the clamping groove 220 is closed.

[0036] Optionally, the side of the plug-in block 120 away from the elastic buckle 130 is arranged as a plane. In this way, the side of the plug-in block 120 away from the elastic buckle 130 can be better attached to the side plate, which is conducive to the mounting seat 100 being more stably mounted on the side plate.

[0037] The activity layer plate support provided by the application is provided with the plug-in block 120 and the elastic buckle 130 on the base 110 of the mounting seat 100, and is provided with the plug-in groove 210 and the clamping groove 220 on the bottom of the mounting sleeve 200. In use, the plug-in block 120 is first fixed on the side plate, then the mounting sleeve 200 is embedded in the activity layer plate, then the mounting sleeve 200 and the activity layer plate are placed on the base 110 of the mounting seat 100, so that the plug-in block 120 is plugged into the plug-in groove 210, and the elastic buckle 130 is clamped in the clamping groove 220. In this way, the plug-in cooperation of the plug-in block 120 and the plug-in groove 210 and the clamping cooperation of the elastic buckle 130 and the clamping groove 220 can effectively limit the movement of the activity layer plate relative to the side plate, so that the activity layer plate is stably connected to the side plate, and the activity layer plate is not easy to be raised, loosened or even fallen when subjected to external force, and the safety hazard caused by the loosening of the activity layer plate can be avoided as much as possible.

[0038] In another embodiment of the application, referring to Figure 4 The elastic buckle 130 includes a connecting portion 131 arranged on the base 110 and an elastic clamping head 132 connected to the top end of the connecting portion 131, and the width of the elastic clamping head 132 is greater than that of the connecting portion 131. The clamping groove 220 includes a guide groove 221 and a locking groove 222 arranged in sequence along the direction from the bottom to the top of the mounting sleeve 200. The width of the guide groove 221 gradually increases along the direction from the bottom to the top of the mounting sleeve 200. The width of the locking groove 222 at the connection with the guide groove 221 is less than that of the elastic clamping head 132, and the width of the locking groove 222 at the end away from the guide groove 221 is greater than or equal to that of the elastic clamping head 132.

[0039] It should be noted that the width of the guide groove 221 refers to the size of the guide groove 221 in the second horizontal direction Y, and the width of the locking groove 222 refers to the size of the locking groove 222 in the second horizontal direction Y. The second horizontal direction Y is perpendicular to the first horizontal direction X and the vertical direction Z.

[0040] The elastic buckle 130 and the clamping groove 220 are clamped and matched, the elastic clamping joint 132 is guided into the locking groove 222 by the guide groove 221, the elastic clamping joint 132 is elastically deformed in the process of entering the locking groove 222, the elastic clamping joint 132 returns to the original state and is kept in the locking groove 222 in the process of completely entering the locking groove 222, so that a larger external force is required to take out the elastic buckle 130 from the clamping groove 220, the mounting sleeve 200 and the mounting base 100 are relatively stably connected with each other, and then the movable layer plate and the side plate are relatively stably connected with each other, and the guide groove 221 can guide the elastic buckle 130 to quickly enter the locking groove 222 in the assembling process, the mounting sleeve 200 and the mounting base 100 can be quickly assembled, and the mounting is more simple and convenient.

[0041] In another embodiment of the present application, referring to Figures 5 to 7 , the size of the insertion groove 210 in the second horizontal direction Y in the direction from the insertion groove 210 to the clamping groove 220 is continuously increased or increased in steps, and the size of the insertion block 120 in the second horizontal direction Y in the direction from the insertion block 120 to the elastic buckle 130 is continuously increased or increased in steps.

[0042] The movable layer plate provided by the embodiment has the following advantages: the width (size in the second horizontal direction Y) of the side of the insertion groove 210 closer to the clamping groove 220 is larger, the width (size in the second horizontal direction Y) of the side of the insertion block 120 closer to the elastic buckle 130 is larger, after the insertion block 120 is inserted into the insertion groove 210, the insertion block 120 cannot be separated from the insertion groove 210 from the open side of the insertion groove 210, the mounting sleeve 200 and the mounting base 100 are relatively fixed in the first horizontal direction X, the mounting sleeve 200 and the mounting base 100 are stably connected with each other, and then the movable layer plate and the side plate are relatively stably connected with each other.

[0043] In another embodiment of the present application, referring to Figure 6 and Figure 7 , the insertion groove 210 comprises a first insertion groove 211 and a second insertion groove 212 which are sequentially communicated along the first horizontal direction X, the second insertion groove 212 is arranged close to the clamping groove 220, one side of the first insertion groove 211 away from the second insertion groove 212 is open, the size of the first insertion groove 211 in the second horizontal direction Y is smaller than the size of the second insertion groove 212 in the second horizontal direction Y; referring to Figure 5The plug block 120 includes a first plug portion 121 and a second plug portion 122 connected sequentially along the first horizontal direction X. The second plug portion 122 is close to the elastic buckle 130. The size of the first plug portion 121 in the second horizontal direction Y is smaller than the size of the second plug portion 122 in the second horizontal direction Y. The first plug portion 121 is plugged into the first slot 211, and the second plug portion 122 is plugged into the second slot 212.

[0044] The movable shelf holder provided in this embodiment has a stepped increase in the size of the insertion groove 210 in the second horizontal direction Y from the open side to the closed side, and a stepped increase in the size of the insertion block 120 in the second horizontal direction Y from the first insertion part 121 to the second insertion part 122. After the insertion block 120 is inserted into the insertion groove 210, the insertion block 120 will not detach from the insertion groove 210 from the open side. The mounting sleeve 200 and the mounting base 100 remain relatively fixed in the first horizontal direction X, so that the mounting sleeve 200 and the mounting base 100 can be stably connected to each other, thereby making the movable shelf and the side plate more securely connected to each other.

[0045] In another embodiment of this application, the dimension of the first slot 211 in the second horizontal direction Y gradually decreases from the bottom to the top of the mounting sleeve 200 (not shown in the figure) or gradually decreases and then remains constant (e.g. Figure 8 As shown). With this configuration, the width of the bottom of the first slot 211 (the dimension of the first slot 211 in the second horizontal direction Y) is larger, which can guide the first insertion part 121 to quickly enter the first slot 211 from the bottom of the first slot 211, thereby improving the assembly efficiency of the mounting base 100 and the mounting sleeve 200.

[0046] In another embodiment of this application, the dimension of the second slot 212 in the second horizontal direction Y gradually decreases from the bottom to the top of the mounting sleeve 200, or decreases gradually and then remains constant. It should be noted that the above-mentioned case is not shown in the figure. With this configuration, the width of the bottom of the second slot 212 (the dimension of the second slot 212 in the second horizontal direction Y) is larger, which can guide the second insertion part 122 to quickly enter the second slot 212 from the bottom of the second slot 212, thereby improving the assembly efficiency of the mounting base 100 and the mounting sleeve 200.

[0047] In another embodiment of this application, please refer to Figure 6 A first stepped surface 213 is formed at the connection between the second slot 212 and the first slot 211. The first stepped surface 213 is inclined relative to the vertical direction Z, and gradually approaches the closed side of the insertion slot 210 in the direction from the bottom to the top of the mounting sleeve 200; see also Figure 5The surface of the second plug-in part 122 connected with the first plug-in part 121 is a second stepped surface 1221 arranged obliquely relative to the vertical direction Z, and the second stepped surface 1221 gradually approaches the elastic buckle 130 in the direction from the bottom to the top of the plug-in block 120, and is used for sliding fit with the first stepped surface 213.

[0048] It should be noted that, please refer to Figure 6 and Figure 7 Since the size of the second slot 212 in the second horizontal direction Y is greater than the size of the first slot 211 in the second horizontal direction Y, the first stepped surface 213 is formed on the side of the second slot 212 close to the first slot 211. Please refer to Figure 5 , the second plug-in part 122 is closer to the elastic buckle 130 than the first plug-in part 121, and the second stepped surface 1221 gradually inclines towards the elastic buckle 130 in the direction from the bottom to the top of the mounting seat 100.

[0049] The movable layer plate holder provided in the embodiment can guide the plug-in block 120 to quickly enter the plug-in slot 210 by sliding fit of the second stepped surface 1221 and the first stepped surface 213 during insertion of the plug-in block 120 into the plug-in slot 210, which is beneficial to improve the assembly efficiency of the mounting seat 100 and the mounting sleeve 200.

[0050] In addition, in the prior art, after the movable layer plate is connected to the side plate, a gap is easily formed between the movable layer plate and the side plate. However, in the movable layer plate holder provided in the embodiment, after the plug-in block 120 is inserted into the plug-in slot 210, the first stepped surface 213 of the mounting sleeve 200 is supported on the second stepped surface 1221 of the mounting seat 100, and the mounting sleeve 200 has a tendency to approach the side plate under the action of gravity, thereby driving the movable layer plate to also have a tendency to approach the side plate. A pulling force can be formed between the movable layer plate and the side plate, which is beneficial to tightly connect the movable layer plate and the side plate and can avoid the gap between the movable layer plate and the side plate as much as possible.

[0051] In another embodiment of the present application, please refer to Figures 1 to 3 The movable layer plate holder further comprises a fastener 300, and the plug-in block 120 is provided with a fastening hole 1201 extending along the first horizontal direction X, and the fastener 300 is arranged in the fastening hole 1201 and connected to the side plate.

[0052] Specifically, in some implementations, the fastening hole 1201 can penetrate the adapter block 120 along the first horizontal direction X in the illustrated embodiment, and in other implementations, the fastening hole 1201 can also penetrate the adapter block 120 along a direction inclined relative to the first horizontal direction X in the illustrated embodiment; the fastener 300 can be a screw, a bolt, or the like. Preferably, the fastening hole 1201 penetrates the adapter block 120 along the first horizontal direction X in the illustrated embodiment, the fastener 300 is a cross recessed head screw, and after the cross recessed head screw is arranged in the fastening hole 1201, the head of the cross recessed head screw is flush with the surface of the adapter block 120 and does not protrude from the surface of the adapter block 120, so as to avoid interfering with the adapter cooperation between the adapter block 120 and the adapter slot 210.

[0053] The activity layer plate holder provided in the embodiment can fix the mounting seat 100 on the side plate by arranging the fastener 300 in the fastening hole 1201 and then connecting the fastener 300 to the side plate, the fastener 300 has good connection stability, and the entire fastener 300 is wrapped by the side plate, the mounting seat 100, and the mounting sleeve 200 and has no exposed part, so that the fastener 300 is not prone to corrosion and loosening, which is conducive to stably connecting the activity layer plate to the side plate for a long time and conducive to keeping the surfaces of the activity layer plate and the side plate clean.

[0054] In another embodiment of the present application, the activity layer plate further comprises an adapter rod (not shown in the figure), which is arranged horizontally on the side of the adapter block 120 away from the elastic buckle 130 and is used for being fixed to the side plate by adapter cooperation. Specifically, the side plate needs to be provided with an adapter hole for adapter cooperation with the adapter rod, and the adapter rod can be in interference fit with the adapter hole.

[0055] The activity layer plate holder provided in the embodiment can fix the mounting seat 100 on the side plate by arranging the fastener 300 in the fastening hole 1201 and then connecting the fastener 300 to the side plate, the fastener 300 has good connection stability, and the entire fastener 300 is wrapped by the side plate, the mounting seat 100, and the mounting sleeve 200 and has no exposed part, so that the fastener 300 is not prone to corrosion and loosening, which is conducive to stably connecting the activity layer plate to the side plate for a long time and conducive to keeping the surfaces of the activity layer plate and the side plate clean.

[0056] In another embodiment of the present application, please refer to Figure 6 The outer peripheral wall of the mounting sleeve 200 is part of a cylindrical surface, and a plurality of convex strips 230 extending along the axial direction of the mounting sleeve 200 are arranged on the outer peripheral wall of the mounting sleeve 200.

[0057] Specifically, the number of convex strips 230 can be one or more, and when the number of convex strips 230 is multiple, the multiple convex strips 230 are sequentially arranged on the outer peripheral wall of the mounting sleeve 200 along the circumferential direction of the mounting sleeve 200.

[0058] In this way, the convex strips 230 can increase the friction between the outer peripheral wall of the mounting sleeve 200 and the activity layer plate, so as to avoid the mounting sleeve 200 rotating relative to the activity layer plate around the axial direction of the mounting sleeve 200 as much as possible, which is conducive to stably connecting the activity layer plate to the side plate.

[0059] In another embodiment of the present application, please refer to Figure 6 The outer side wall of the mounting sleeve 200 is provided with a plurality of racks 240 extending along the circumference of the mounting sleeve 200.

[0060] Specifically, the number of the racks 240 can be one or more. When the number of the racks 240 is more than one, the plurality of racks 240 are sequentially arranged along the axial direction of the mounting sleeve 200.

[0061] In this way, the racks 240 can increase the friction between the outer side wall of the mounting sleeve 200 and the movable layer plate, so as to avoid the mounting sleeve 200 from falling down from the bottom of the movable layer plate, and facilitate the stable connection of the movable layer plate to the side plate through the locking effect of the mounting sleeve 200 and the mounting seat 100.

[0062] The above merely provides the preferred embodiments of the present application, but not for limiting the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A movable floor panel carrier, characterized in that The active layer plate support comprises: a mounting seat comprising a base, a plug block and an elastic buckle, the plug block and the elastic buckle are sequentially arranged along a first horizontal direction, the plug block is used for being fixed on a side plate; a mounting sleeve used for being embedded in the bottom of the active layer plate, the bottom of the mounting sleeve is provided with a plug slot and a clamping slot, the plug slot and the clamping slot are sequentially arranged along the first horizontal direction, the plug slot is open on the side away from the clamping slot, the plug slot and the plug block are plug-fitted along the vertical direction, the clamping slot and the elastic buckle are clamped along the vertical direction, so that the mounting sleeve is supported on the base, the elastic buckle comprises a connecting portion provided on the base and an elastic clamping head connected to the top end of the connecting portion, the width of the elastic clamping head is greater than the width of the connecting portion; the clamping slot comprises a guide slot and a locking slot sequentially arranged along the direction from the bottom to the top of the mounting sleeve, the width of the guide slot gradually increases along the direction from the bottom to the top of the mounting sleeve, the width of the locking slot at the connection with the guide slot is less than the width of the elastic clamping head, the width of the locking slot away from the guide slot is greater than or equal to the width of the elastic clamping head; the size of the plug slot in a second horizontal direction perpendicular to the first horizontal direction continuously or stepwisely increases in the direction from the plug slot to the clamping slot, and the size of the plug block in the second horizontal direction continuously or stepwisely increases in the direction from the plug block to the elastic buckle, the plug slot comprises a first plug slot and a second plug slot sequentially connected along the first horizontal direction, the second plug slot is close to the clamping slot, the first plug slot is open on the side away from the second plug slot, the size of the first plug slot in the second horizontal direction is less than the size of the second plug slot in the second horizontal direction; the plug block comprises a first plug portion and a second plug portion sequentially connected along the first horizontal direction, the second plug portion is close to the elastic buckle, the size of the first plug portion in the second horizontal direction is less than the size of the second plug portion in the second horizontal direction, the first plug portion and the first plug slot are plug-fitted, the second plug portion and the second plug slot are plug-fitted, the connection of the second plug slot and the first plug slot forms a first step surface, the first step surface is arranged obliquely relative to the vertical direction, and the first step surface gradually approaches the clamping slot in the direction from the bottom to the top of the mounting sleeve; the surface of the second plug portion connected with the first plug portion is a second step surface arranged obliquely relative to the vertical direction, the second step surface gradually approaches the elastic buckle in the direction from the bottom to the top of the plug block, and the second step surface is used for slidingly fitting with the first step surface.

2. The activity sheet holder of claim 1, wherein, The size of the first slot in the second horizontal direction gradually decreases from the bottom to the top of the mounting sleeve, or gradually decreases first and then remains unchanged; and / or, the size of the second slot in the second horizontal direction gradually decreases from the bottom to the top of the mounting sleeve, or gradually decreases first and then remains unchanged.

3. The activity sheet holder according to any one of claims 1-2, wherein The movable layer plate support further comprises a fastener, and the insertion block is provided with a fastening hole extending along the first horizontal direction, and the fastener is arranged in the fastening hole and connected to the side plate.

4. The activity sheet holder according to any one of claims 1 to 2, wherein The movable layer plate further comprises an insertion rod arranged horizontally on the side of the insertion block away from the elastic buckle, and used for being inserted and fixed to the side plate.

5. The activity sheet holder according to any one of claims 1 to 2, wherein The outer peripheral wall of the mounting sleeve is a part of a cylindrical surface, and a plurality of protrusions extending along the axial direction of the mounting sleeve are arranged on the outer peripheral wall of the mounting sleeve.

6. The activity sheet holder of claim 5, wherein, A plurality of racks extending along the circumferential direction of the mounting sleeve are arranged on the outer side wall of the mounting sleeve.

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