A multi-fold bed board and a multi-fold bed board system for a roof tent

Abstract

The present application discloses a multi-fold bed board and a multi-fold bed board system for a roof tent. Among them, the multi-fold bed board includes: a plurality of telescopic bed boards, which are rotatably connected by a connecting member between adjacent two telescopic bed boards, and the telescopic bed boards are folded along the position of the connecting member; each telescopic bed board includes a first bed board and a second bed board, the first bed board is slidably connected to the second bed board, and the second bed board is telescoped in a direction away from or close to the first bed board through the sliding connection position. The present application can quickly expand and contract the volume size, facilitating the use and storage by users.

Description

Technical Field

[0001] This application relates to the technical field of outdoor storage tools, and particularly relates to a multi-fold bed board and a multi-fold bed board system for a roof tent. Background Art

[0002] Currently, the bed boards used in roof tents sold on the market usually adopt a fixed integrated folding structure. This structural method has certain limitations for the flexible use of user vehicles. It is impossible to store the tent after use, and it is also easily affected in scenarios such as parking lot height limits and road width limits. Summary of the Invention

[0003] The purpose of this application is to provide a multi-fold bed board and a multi-fold bed board system for a roof tent, which can quickly expand and contract the volume size, facilitating user use and storage.

[0004] To achieve the above object, this application provides a multi-fold bed board, including: a plurality of telescopic bed boards, with adjacent two telescopic bed boards rotatably connected by a connecting member, and the telescopic bed boards are folded along the position of the connecting member; each telescopic bed board includes a first bed board and a second bed board, the first bed board is slidably connected to the second bed board, and the second bed board is telescoped in a direction away from or close to the first bed board through the sliding connection position.

[0005] As above, among them, the plurality of telescopic bed boards are three, namely the first telescopic bed board, the second telescopic bed board and the third telescopic bed board. One side of the first telescopic bed board is rotatably connected to one side of the second telescopic bed board by a first connecting member, and the second telescopic bed board is folded along the position of the first connecting member towards or away from the first telescopic bed board; the other side of the first telescopic bed board is rotatably connected to one side of the third telescopic bed board by a second connecting member, and the third telescopic bed board is folded along the position of the second connecting member towards or away from the second telescopic bed board.

[0006] As above, among them, the telescopic bed board further includes a rope; the first bed board includes: a cross bar, a first vertical bar and a second vertical bar; the second bed board includes a first sliding bar and two second sliding bars; both ends of the cross bar are fixedly connected to one end of the first vertical bar and one end of the second vertical bar respectively; both ends of the first sliding bar are respectively provided with second sliding bars, and both ends of the first sliding bar are respectively slidably connected to the other end of the first vertical bar and the other end of the second vertical bar through the second sliding bars; on the side of the cross bar facing the first sliding bar, on the side of the first vertical bar facing the second vertical bar, on the side of the second vertical bar facing the first vertical bar, and on the side of the first sliding bar facing the cross bar, a plurality of threaded holes are provided, and a closed-end screw is arranged in each threaded hole, and the rope is wound along the closed-end screws to form a mesh structure.

[0007] As above, among them, both ends of the cross bar are fixedly connected to one end of the first vertical bar and one end of the second vertical bar by angle connecting member screws.

[0008] As described above, wherein the first vertical rod and the second vertical rod are both of hollow structures, and the two second sliding rods are respectively placed inside the first vertical rod and the second vertical rod; upper limiting holes and lower limiting holes are provided on both the first vertical rod and the second vertical rod; the upper limiting holes are provided on the first vertical rod and the second vertical rod at positions far from the cross bar, and the lower limiting holes are provided on the first vertical rod and the second vertical rod at positions close to the cross bar.

[0009] As described above, wherein, inside each end of the second sliding rod far from the first sliding rod, a first sliding connecting member is provided; the first sliding connecting member includes an upper limiting pressing plate, a lower limiting pressing plate, a sliding driving block, at least one return spring and a limiting pin; the upper limiting pressing plate and the lower limiting pressing plate are arranged in parallel and at intervals on the inner wall of the second sliding rod; the sliding driving block is arranged inside the second sliding rod and is located between the upper limiting pressing plate and the lower limiting pressing plate; the first side surface and the second side surface of the sliding driving block are arranged oppositely and are both perpendicular to the upper limiting pressing plate and the lower limiting pressing plate; at least one spring mounting hole is provided on the first side surface, one end of the return spring is arranged in the spring mounting hole, and the other end of the return spring is in contact connection with the inner wall of the second sliding rod; a mating convex block is provided at one end of the second side surface close to the upper limiting pressing plate, and a limiting pin is provided at one end of the second side surface close to the lower limiting pressing plate; a limiting hole is provided at a position on the second sliding rod corresponding to the limiting pin; the limiting pin sequentially penetrates through the limiting hole and the upper limiting hole or the lower limiting hole for telescoping.

[0010] As described above, wherein a spring seat block and a pressing plate are provided in the first sliding rod; sliding driving rods are provided in both of the two second sliding rods; the spring seat block has a spring seat block hole, and a return spring is provided in the spring seat block hole; the spring seat block is arranged inside the first sliding rod and is fixedly connected to the inner wall of the first sliding rod; the pressing plate includes a pressing plate main body and a pressing plate protrusion, the pressing plate protrusion is arranged on one side of the pressing plate main body to form a T-shaped structure, and the other side of the pressing plate main body corresponds to the spring seat block; a protrusion hole is provided at a position on the first sliding rod corresponding to the pressing plate protrusion, and the pressing plate protrusion penetrates through the protrusion hole for telescoping; both ends of the pressing plate main body are respectively fixedly connected to one end of the sliding driving rod; a second sliding connecting member is provided at each end of each sliding driving rod far from the pressing plate main body; the second sliding connecting member has a mating groove for mating with the mating convex block.

[0011] As described above, wherein a fixing block is provided on the side of the first sliding rod facing the cross bar; the fixing block includes a first side rod, a second side rod and a fixing rod; one end of the fixing rod is fixedly connected to one end of the first side rod, and the other end is fixedly connected to one end of the second side rod; the other end of the first side rod is fixedly connected to the side of the first sliding rod facing the cross bar; the other end of the second side rod is fixedly connected to the side of the first sliding rod facing the cross bar, and the protrusion hole is located between the connection of the first sliding rod and the first side rod and the connection of the first sliding rod and the second side rod; a plurality of threaded holes are provided on the side of the fixing rod far from the first sliding rod, and a closed-end screw is provided in each threaded hole.

[0012] As described above, wherein the first connecting member includes a first rotating shaft and at least two rotating shaft pins; the second connecting member includes a second rotating shaft and at least two rotating shaft pins; the length of the first rotating shaft is less than the length of the second rotating shaft; one end of the first rotating shaft is rotatably connected to the outer side surface of the cross bar of the first telescopic bed board through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar of the second telescopic bed board through a rotating shaft pin; one end of the second rotating shaft is rotatably connected to the outer side surface of the cross bar of the first telescopic bed board through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar of the third telescopic bed board through a rotating shaft pin.

[0013] The present application also provides a multi-fold bed board system for a roof tent, including: the above-mentioned multi-fold bed board, a telescopic ladder, and at least two luggage rack connecting members; one ends of at least two luggage connecting racks are respectively connected to the first telescopic bed board and the third telescopic bed board of the multi-fold bed board, and the other ends are connected to the luggage rack; one end of the telescopic ladder is connected to the second telescopic bed board of the multi-fold bed board, and the other end is placed on the ground.

[0014] The beneficial effects achieved by the present application are as follows:

[0015] (1) The length dimension of the multi-fold bed board is divided into multiple segments, and adjacent segments are connected by a steering hinge. The middle space after the telescopic bed board is folded can accommodate the tent inside.

[0016] (2) The width direction of the telescopic bed board is controlled by a telescopic structure and a position clamping mechanism for the width dimension. During storage, the width dimension of the telescopic bed board can be quickly contracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the multi-fold bed board in an unfolded state;

[0019] Figure 2 It is a schematic structural diagram of an embodiment of the multi-fold bed board in a contracted state;

[0020] Figure 3 It is a schematic structural diagram of an embodiment of the telescopic bed board;

[0021] Figure 4 It is a sectional view of the first sliding rod and the second sliding rod;

[0022] Figure 5Schematic structural diagram of an embodiment of a multi-fold bed board system for a roof tent. Detailed implementation mode

[0023] Combined with the accompanying drawings in the embodiments of the present invention below, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0024] This application provides a multi-fold bed board and a multi-fold bed board system for a roof tent, which has the technical effect of being able to quickly expand and contract the volume size, facilitating the use and storage by users.

[0025] This application provides a multi-fold bed board, including: a plurality of telescopic bed boards, which are rotatably connected by connectors between adjacent two telescopic bed boards, and the telescopic bed boards are folded along the position of the connectors; each telescopic bed board includes a first bed board and a second bed board, the first bed board and the second bed board are slidably connected, and the second bed board is telescoped in a direction away from or close to the first bed board through the sliding connection position. Specifically, the connector can be a rotating shaft or a hinge, etc. The specific number of telescopic bed boards can be determined according to the actual situation, and three are preferably selected in this application.

[0026] Furthermore, as Figure 1 and 2 shown, as an embodiment, the plurality of telescopic bed boards are three, which are the first telescopic bed board 11, the second telescopic bed board 12 and the third telescopic bed board 13 respectively. One side of the first telescopic bed board 11 is rotatably connected to one side of the second telescopic bed board 12 through the first connector 1101, and the second telescopic bed board 12 is folded along the position of the first connector 1101 in a direction close to or away from the first telescopic bed board 11; the other side of the first telescopic bed board 11 is rotatably connected to one side of the third telescopic bed board 13 through the second connector 1102, and the third telescopic bed board 13 is folded along the position of the second connector 1102 in a direction close to or away from the second telescopic bed board 12.

[0027] Furthermore, as Figure 3As shown, the telescopic bed board further includes a rope 115; the first bed board includes: a cross bar 110, a first vertical bar 111, and a second vertical bar 112; the second bed board includes: a first sliding bar 113 and two second sliding bars 114; both ends of the cross bar 110 are fixedly connected to one end of the first vertical bar 111 and one end of the second vertical bar 112 respectively; both ends of the first sliding bar 113 are respectively provided with second sliding bars 114, and both ends of the first sliding bar 113 are respectively slidably connected to the other end of the first vertical bar 111 and the other end of the second vertical bar 112 through the second sliding bars 114; multiple threaded holes are provided on one side of the cross bar 110 facing the first sliding bar 113, one side of the first vertical bar 111 facing the second vertical bar 112, one side of the second vertical bar 112 facing the first vertical bar 111, and one side of the first sliding bar 113 facing the cross bar 110, and a closed-end screw 116 is provided in each threaded hole, and the rope 115 is wound along the closed-end screws 116 to form a net structure. Specifically, the rope 115 is a rubber-coated steel wire rope, but is not limited to a rubber-coated steel wire rope. This application preferably uses a rubber-coated steel wire rope, and this rope has the advantages of being strong, durable, and not easily scratching the user.

[0028] Further, as an embodiment, both ends of the cross bar 110 are respectively fixedly connected to one end of the first vertical bar and one end of the second vertical bar by angle connectors 1103 with screws, but are not limited to being fixedly connected by angle connectors with screws, and can also be fixedly connected by welding or other means. This application preferably uses angle connectors with screws for fixed connection.

[0029] Further, both the first vertical bar 111 and the second vertical bar 112 are hollow structures, and the two second sliding bars 114 are respectively placed inside the first vertical bar 111 and the second vertical bar 112; upper limit holes and lower limit holes are provided on both the first vertical bar 111 and the second vertical bar 112; the upper limit holes are provided on the first vertical bar 111 and the second vertical bar 112 at positions far from the cross bar 110, and the lower limit holes are provided on the first vertical bar 111 and the second vertical bar 112 at positions close to the cross bar 110. Specifically, the upper limit holes and the lower limit holes are evenly spaced on the outer sides of the first vertical bar 111 and the second vertical bar 112 far from the net structure.

[0030] Further, as shown in Figure 4As shown, a first sliding connection member is disposed inside each end of the second sliding rod 114 away from the first sliding rod 113. The first sliding connection member includes an upper limit pressing plate 1140, a lower limit pressing plate 1141, a sliding drive block 1142, at least one return spring 1143, and a limit pin 1144. Among them, the upper limit pressing plate 1140 and the lower limit pressing plate 1141 are arranged in parallel at intervals on the inner wall of the second sliding rod 114, and the lengths of the upper limit pressing plate 1140 and the lower limit pressing plate 1141 are both smaller than the diameter length of the second sliding rod 114. The specific number of the return springs 1143 can be determined according to actual situations, and preferably 2 return springs 1143 are provided in this application. The sliding drive block 1142 is disposed inside the second sliding rod 114 and is located between the upper limit pressing plate 1140 and the lower limit pressing plate 1141. By disposing the sliding drive block 1142 between the upper limit pressing plate 1140 and the lower limit pressing plate 1141, the up-and-down movement of the sliding drive block 1142 in the second sliding rod 114 is effectively restricted. The first side surface and the second side surface of the sliding drive block 1142 are oppositely arranged and are both perpendicular to the upper limit pressing plate 1140 and the lower limit pressing plate 1141; at least one spring mounting hole is provided on the first side surface, and the specific number of the spring mounting holes can be determined according to actual situations. Preferably, two spring mounting holes are provided in this application, and the two spring mounting holes are evenly spaced on the first side surface. One end of the return spring 1143 is disposed in the spring mounting hole, and the other end of the return spring 1143 is in contact connection with the inner wall of the second sliding rod 114. A mating convex block 11420 is provided at one end of the second side surface close to the upper limit pressing plate 1140, and a limit pin 1144 is provided at one end of the second side surface close to the lower limit pressing plate 1141. A limit hole 1145 is provided at a position on the second sliding rod 114 corresponding to the limit pin 1144; the limit pin sequentially penetrates through the limit hole 1145 and the upper limit hole or the lower limit hole for expansion and contraction.

[0031] Further, a threaded hole is provided at one end of the second side surface close to the lower limit pressing plate 1141, and the limit pin 1144 is threadedly connected to the threaded hole. However, it is not limited to threaded connection, and the limit pin can also be connected to the second side surface by welding or other means.

[0032] Further, as Figure 4As shown, a spring seat block 1133 and a pressing plate 1130 are arranged in the first sliding rod 113; a sliding driving rod 1146 is arranged in each of the two second sliding rods 114. The spring seat block 1133 has a spring seat block hole, and a return spring is arranged in the spring seat block hole; the spring seat block is arranged inside the first sliding rod 113 and is fixedly connected to the inner wall of the first sliding rod 113. The pressing plate 1130 includes a pressing plate main body 1131 and a pressing plate protrusion 1132. The pressing plate protrusion 1132 is arranged on one side of the pressing plate main body 1131 to form a T-shaped structure. The other side of the pressing plate main body 1131 corresponds to the spring seat block 1133, and after pressing the pressing plate protrusion 1132, the pressing plate main body 1131 can contact and press the spring seat block 1133. A protrusion hole is arranged at a position on the first sliding rod 113 corresponding to the pressing plate protrusion 1132, and the pressing plate protrusion 1132 penetrates through the protrusion hole for expansion and contraction. Specifically, as an embodiment, the protrusion hole is arranged on the side of the first sliding rod 113 facing the cross bar 110, which is convenient for pressing the pressing plate 1130 during use. The two ends of the pressing plate main body 1131 are respectively fixedly connected to one end of the sliding driving rod 1146, and the fixing method is welding. A second sliding connecting piece 11460 is arranged at one end of each sliding driving rod 1146 away from the pressing plate main body 1131; the second sliding connecting piece 11460 has a fitting groove for fitting a fitting convex block. Specifically, both the fitting convex block and the fitting groove have a fitting inclined surface 11421. The fitting convex block is arranged in the fitting groove and slides up and down through the two fitting inclined surfaces 11421.

[0033] Further, as Figure 3As shown in the figure, on one side of the first sliding rod 113 facing the cross bar 110, there is a fixing block 1134. The fixing block 1134 includes a first side rod 11340, a second side rod 11341 and a fixing rod 11342. One end of the fixing rod 11342 is fixedly connected to one end of the first side rod 11340, and the other end is fixedly connected to one end of the second side rod 11341; the other end of the first side rod 11340 is fixedly connected to the side of the first sliding rod 113 facing the cross bar 110; the other end of the second side rod 11341 is fixedly connected to the side of the first sliding rod 113 facing the cross bar 110, and the convex hole is located between the connection of the first sliding rod 113 and the first side rod 11340 and the connection of the first sliding rod 113 and the second side rod 11341. On the side of the fixing rod 11342 away from the first sliding rod 113, there are a plurality of threaded holes, and each threaded hole is provided with a closed-end screw 116. Specifically, the fixing rod 11342 can be an integral structure or a split structure, and the present application preferably adopts an integral structure. The other end of the first side rod 11340 is connected to the side of the first sliding rod 113 facing the cross bar by welding, but is not limited to the welding method. The present application preferably adopts the welding method. The other end of the second side rod 11341 is connected to the side of the first sliding rod 113 facing the cross bar 110 by welding, but is not limited to the welding method. The present application preferably adopts the welding method. After the fixing block 1134 is arranged on the first sliding rod 113, there is a space for the user's hand to pass between the fixing block 1134 and the first sliding rod 113, which is convenient for the user to apply or remove force on the pressing plate protrusion 1132 during use.

[0034] Furthermore, as an embodiment, the first sliding rod 113 and the two second sliding rods 114 both include a U-shaped tube and a cover plate. Specifically, after arranging the pressing plate 1130 or the sliding driving rod 1146 in the U-shaped tube of the first sliding rod 113 or the second sliding rod 114, the cover plate is connected to the U-shaped tube. This setting facilitates the arrangement of components such as the pressing plate or the sliding driving rod in the first sliding rod and the second sliding rod. Among them, the U-shaped tube is an aluminum alloy tube, but is not limited to an aluminum alloy tube.

[0035] Specifically, when in use, the user pulls the pressing plate protrusion 1132 by hand. The pressing plate protrusion 1132 applies pressure to the spring seat block 1133. The pressing plate 1130 moves upward in the first sliding rod 113 towards the contact spring seat block 1133, thereby driving the sliding drive rod 1146 to move upward. The second sliding connector 11460 of the sliding drive rod 1146 moves upward along the mating inclined surface 11421, squeezing the mating convex block 11420 of the first sliding connector, thereby driving the sliding drive block 1142 to move inward. The limit pin sequentially contracts towards the position of the limit hole 1145 through the upper limit hole or the lower limit hole. At this time, the second sliding rod 114 can slide in the first vertical rod 111 and the second vertical rod 112. When sliding to the lower limit hole or the upper limit hole, the user releases the pressing plate protrusion. The pressing plate 1130 moves downward by the reaction force of the spring seat block 1133, thereby driving the sliding drive rod 1146 to move downward. The second sliding connector 11460 of the sliding drive rod 1146 moves downward along the mating inclined surface 11421, and the mating convex block 11420 returns to the mating groove. The limit pin 1144 extends out of the upper limit hole or the lower limit hole by the reaction force of the return spring 1133, and the second sliding rod 114 is clamped with the first vertical rod 111 and the second vertical rod 112 and no longer slides. This setting facilitates the expansion and contraction of the telescopic bed board in the width direction.

[0036] Furthermore, as an embodiment, the first connector 1101 includes a first rotating shaft and at least two rotating shaft pins, and the second connector 1102 includes a second rotating shaft and at least two rotating shaft pins. The length of the first rotating shaft is less than the length of the second rotating shaft. One end of the first rotating shaft is rotatably connected to the outer side surface of the cross bar 110 of the first telescopic bed board 11 through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar 110 of the second telescopic bed board 12 through a rotating shaft pin. One end of the second rotating shaft is rotatably connected to the outer side surface of the cross bar 110 of the first telescopic bed board 11 through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar 110 of the third telescopic bed board 13 through a rotating shaft pin.

[0037] Specifically, as Figure 2 shown, when the multi-fold bed board is folded, first fold the second telescopic bed board 12 along the position of the first connector 1101 towards the direction close to the first telescopic bed board 11 until it is parallel to the first telescopic bed board 11; then fold the third telescopic bed board 13 along the position of the second connector 1102 towards the direction close to the second telescopic bed board 12 until it is parallel to the second telescopic bed board 12. This setting makes the length direction of the multi-fold bed board a foldable structure, and the length dimension after folding is reduced, which is convenient for users to store in the trunk. This multi-fold bed board can be used for a roof tent or directly on land.

[0038] As Figure 5As shown in the figure, the present application also provides a multi-fold bed board system for a roof tent, including: the above-mentioned multi-fold bed board 1, a telescopic ladder 2, and at least two luggage rack connectors 3. One ends of at least two luggage connectors 3 are respectively connected to the first telescopic bed board 11 and the third telescopic bed board 13 of the multi-fold bed board 1, and the other ends are connected to the luggage rack 4; one end of the telescopic ladder 2 is connected to the second telescopic bed board 12 of the multi-fold bed board 1, and the other end is placed on the ground.

[0039] Further, one end of the luggage connector 3 is respectively connected to the cross bars of the first telescopic bed board 11 and the third telescopic bed board 13 by screws; the other end of the luggage connector 3 is fastened to the luggage rack 4 of the vehicle by a hand-tightening screw 31.

[0040] Further, the telescopic ladder 3 is connected to the second telescopic bed board through a ladder connection bracket 22. Specifically, the ladder connection bracket 22 is fastened to the second vertical bar of the second telescopic bed board 12 by screws, and the telescopic ladder 2 is connected to the ladder connection bracket 22 by screws. Among them, the telescopic ladder 2 plays a load-bearing and supporting role, facilitating the up and down movement of users.

[0041] The beneficial effects achieved by the present application are as follows:

[0042] (1) The length dimension of the multi-fold bed board is divided into multiple segments, and adjacent segments are connected by a swivel hinge. The middle space after the telescopic bed board is folded can accommodate the tent inside.

[0043] (2) The width direction of the telescopic bed board is controlled by a telescopic structure and a position clamping mechanism for the width dimension. During storage, the width dimension of the telescopic bed board can be quickly contracted.

[0044] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the protection scope of the present application is intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various changes and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the protection of the present application and its equivalent technologies, the present application also intends to include these changes and variations.

Claims

1. A multi-fold bed board, characterized in that, Comprising: A plurality of telescopic bed boards, which are rotatably connected by a connecting member between adjacent two telescopic bed boards, and the telescopic bed boards are folded along the position of the connecting member; each telescopic bed board includes a first bed board and a second bed board, the first bed board and the second bed board are slidably connected, and the second bed board is telescoped in a direction away from or close to the first bed board through the sliding connection position; the connecting member is a rotating shaft or a hinge; Wherein, the telescopic bed board further includes a rope; the first bed board includes: a cross bar, a first vertical bar and a second vertical bar; the second bed board includes a first sliding bar and two second sliding bars; Both ends of the cross bar are fixedly connected to one end of the first vertical bar and one end of the second vertical bar respectively; Both ends of the first sliding bar are respectively provided with second sliding bars, and both ends of the first sliding bar are respectively slidably connected to the other end of the first vertical bar and the other end of the second vertical bar through the second sliding bars; A plurality of threaded holes are provided on one side of the cross bar facing the first sliding bar, one side of the first vertical bar facing the second vertical bar, one side of the second vertical bar facing the first vertical bar and one side of the first sliding bar facing the cross bar, and a closed-end screw is provided in each threaded hole, and the rope is wound along the closed-end screw to form a mesh structure; Wherein, a first sliding connecting member is provided inside one end of each second sliding bar away from the first sliding bar; The first sliding connecting member includes an upper limit pressing plate, a lower limit pressing plate, a sliding driving block, at least one return spring and a limit pin; The upper limit pressing plate and the lower limit pressing plate are arranged in parallel at intervals on the inner wall of the second sliding bar; The sliding driving block is arranged inside the second sliding bar and is located between the upper limit pressing plate and the lower limit pressing plate; The first side surface and the second side surface of the sliding driving block are arranged oppositely and are both perpendicular to the upper limit pressing plate and the lower limit pressing plate; At least one spring mounting hole is provided on the first side surface, one end of the return spring is arranged in the spring mounting hole, and the other end of the return spring is in contact connection with the inner wall of the second sliding bar; A mating convex block is provided at one end of the second side surface close to the upper limit pressing plate, and a limit pin is provided at one end of the second side surface close to the lower limit pressing plate; A limit hole is provided at a position corresponding to the limit pin on the second sliding bar; the limit pin telescopically penetrates through the limit hole and the upper limit hole or the lower limit hole in sequence; Wherein, a spring seat block and a pressing plate are arranged in the first sliding bar; sliding driving rods are arranged in both of the two second sliding bars; The spring seat block has a spring seat block hole, and a return spring is provided in the spring seat block hole; the spring seat block is arranged inside the first sliding bar and is fixedly connected to the inner wall of the first sliding bar; The pressing plate includes a pressing plate main body and a pressing plate protrusion, the pressing plate protrusion is arranged on one side of the pressing plate main body to form a T-shaped structure, and the other side of the pressing plate main body corresponds to the spring seat block; a protrusion hole is provided at a position corresponding to the pressing plate protrusion on the first sliding bar, and the pressing plate protrusion telescopically penetrates through the protrusion hole; Both ends of the pressing plate main body are fixedly connected to one end of the sliding driving rod respectively; a second sliding connecting member is provided at one end of each sliding driving rod away from the pressing plate main body; the second sliding connecting member has a mating groove for mating with the mating convex block; both the mating convex block and the mating groove have a mating inclined surface, the mating convex block is arranged in the mating groove and slides up and down through the two mating inclined surfaces.

2. The multi-fold bed board according to claim 1, wherein The number of retractable bed boards is three, namely the first retractable bed board, the second retractable bed board and the third retractable bed board. One side of the first retractable bed board is rotatably connected to one side of the second retractable bed board through a first connecting member, and the second retractable bed board folds along the position of the first connecting member towards or away from the first retractable bed board; the other side of the first retractable bed board is rotatably connected to one side of the third retractable bed board through a second connecting member, and the third retractable bed board folds along the position of the second connecting member towards or away from the second retractable bed board.

3. The multi-fold bed board according to claim 1, characterized in that, Both ends of the cross bar are fixedly connected to one end of the first vertical bar and one end of the second vertical bar respectively by angle connecting members with screws.

4. The multi-fold bed board according to claim 1, characterized in that, Both the first vertical bar and the second vertical bar are of hollow structures, and two second sliding bars are respectively placed inside the first vertical bar and the second vertical bar; upper limit holes and lower limit holes are provided on both the first vertical bar and the second vertical bar; the upper limit holes are provided on the first vertical bar and the second vertical bar at positions far from the cross bar, and the lower limit holes are provided on the first vertical bar and the second vertical bar at positions close to the cross bar.

5. The multi-fold bed board according to claim 1, wherein A fixing block is provided on the side of the first sliding bar facing the cross bar; the fixing block includes a first side bar, a second side bar and a fixing bar; one end of the fixing bar is fixedly connected to one end of the first side bar, and the other end is fixedly connected to one end of the second side bar; the other end of the first side bar is fixedly connected to the side of the first sliding bar facing the cross bar; the other end of the second side bar is fixedly connected to the side of the first sliding bar facing the cross bar, and the convex hole is located between the connection of the first sliding bar and the first side bar and the connection of the first sliding bar and the second side bar; a plurality of threaded holes are provided on the side of the fixing bar away from the first sliding bar, and a closed-end screw is provided in each threaded hole.

6. The multi-fold bed board according to claim 1, characterized in that The first connecting member includes a first rotating shaft and at least two rotating shaft pins; the second connecting member includes a second rotating shaft and at least two rotating shaft pins; the length of the first rotating shaft is less than the length of the second rotating shaft; One end of the first rotating shaft is rotatably connected to the outer side surface of the cross bar of the first retractable bed board through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar of the second retractable bed board through a rotating shaft pin; one end of the second rotating shaft is rotatably connected to the outer side surface of the cross bar of the first retractable bed board through a rotating shaft pin, and the other end is rotatably connected to the outer side surface of the cross bar of the third retractable bed board through a rotating shaft pin.

7. A multi-fold bed board system for a roof tent, characterized in that, Comprising: The multi-fold bed board, the retractable ladder and at least two luggage rack connecting members according to any one of claims 1-6; One end of at least two luggage connecting racks is respectively connected to the first retractable bed board and the third retractable bed board of the multi-fold bed board, and the other end is connected to the luggage rack; one end of the retractable ladder is connected to the second retractable bed board of the multi-fold bed board, and the other end is placed on the ground.

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