Interlocking Expandable Bed Apparatus for Camper Vans

Abstract

The interlocking expandable bed device for a camping car according to the present invention comprises: a main body (100) in the shape of a housing installed inside a vehicle and having a storage compartment (110) formed inside; a bed unit (200) comprising a first panel member (210) hinged to one side of the upper part of the main body (100), a second panel member (220) hinged to one side of the first panel member (210), and a third panel member (230) hinged to one side of the second panel member (220); an expandable front support (300) that is pulled out forward from the front part of the main body (100); an expandable side support (400) that is pulled out laterally from the side part of the main body (100) and supports the third panel member (230); and a first to third panel member (210, 220, 230) each provided to be pulled out forward. It includes first to third extended auxiliary panels (500, 600, 700) and an auxiliary support (800) that supports the front end of the third extended auxiliary panel (700). When the first panel member (210) and the second panel member (220) are standing upright in an overlapping state, they form a backrest-type sofa, and when the first to third panel members (210, 220, 230) are unfolded, they form a bed on the same plane. Additionally, a mattress can be placed on the upper part of the bed unit (200) and the first to third extended auxiliary panels (500, 600, 700) for use. Accordingly, the present invention has the effect of selectively implementing a sofa and a bed even in a limited space inside a camper van, and providing a wide and stable sleeping space.

Description

Technology Field

[0001] The present invention relates to a variable bed device installed inside a camper van or vehicle, and more specifically, to an interlocking extendable bed device for a camper van in which a plurality of panel members are slidably and rotatablely coupled, and a wide bed space can be formed by an extendable front support, an extendable side support, and an extendable auxiliary panel that is pulled out in conjunction, and which can be utilized as a sofa structure when folded. Background Technology

[0002] With the recent spread of car camping and camping culture, there is an increasing demand for camping devices that can efficiently utilize the interior space of a vehicle. In particular, since the interior of a camper van has limited space, there is a demand for a variable structure that can selectively perform both bed and sofa functions. Conventional bed structures for camper vans mostly consist of simple folding or hinge rotation methods, which limits the ability to secure sufficient expansion area and cause the inconvenience of having to assemble a separate support structure.

[0003] In addition, conventional expandable bed structures had problems such as reduced stability during use due to complex structures or insufficient load-bearing capacity during expansion, even if they could be extended in multiple stages. In particular, there was a problem in that it was difficult to provide a stable sleeping environment because sagging or shaking was prone to occur in the lateral expansion area or the end area of ​​the bed.

[0004] In addition, conventional technology had problems that reduced usability, such as a complex switching structure between bed and sofa states or the need to operate each extension part individually. In particular, in the case of bed structures connected to the rear passenger space of a vehicle, there were issues with seat interference and limitations in space utilization, and it was difficult to implement various usage forms within the limited interior space of the vehicle. Prior art literature

[0005] Patent Registration No. 10-2263380 (Title of Invention: Camping Device Including an Extendable Bed Section, Registered June 4, 2021) Published Patent No. 10-2025-0012223 (Title of Invention: Variable Bed for Camping Cars, Published January 24, 2025) The problem to be solved

[0006] The present invention is intended to solve the above-mentioned problems; the objective of the present invention is to provide an “interlocking expandable bed device for a camping car” that can be used as a sofa structure in a folded state, can form a wide bed space by a multi-stage expansion structure in an unfolded state, and can stably support the expansion area by means of an expandable front support, an expandable side support, and a pull-out auxiliary support.

[0007] In addition, another objective of the present invention is to provide a “linked extendable bed device for a camper van” that allows a user to quickly and conveniently deploy a bed structure with only a simple pull-out motion by enabling a plurality of extendable auxiliary panels to expand together in conjunction with the pull-out motion of an extendable front support.

[0008] In addition, another objective of the present invention is to provide a “linked extendable bed device for a camping car” that can selectively implement a sofa state, a simple bed state, and a full bed state by allowing all first to third extended auxiliary panels to be pulled out together or only the third extended auxiliary panel to be selectively pulled out in conjunction depending on the unfolded state of the bed unit.

[0009] In addition, another objective of the present invention is to provide a “linked expandable bed device for a camper van” that can improve ease of use and maximize the utilization of interior space in a camper van by enabling the bed to be expanded with only simple unfolding and pulling operations without the assembly of a separate support structure. means of solving the problem

[0010] The present invention for achieving the above objective comprises: an interlocking expandable bed device for a camping car; a main body in the shape of an enclosure installed inside a vehicle and having a storage compartment formed inside; a bed unit comprising a first panel member hinged to one side of the upper part of the main body, a second panel member hinged to one side of the first panel member, and a third panel member hinged to one side of the second panel member, wherein when the first panel member and the second panel member are in an overlapping state and stand upright, a backrest-type sofa is formed, and when the first to third panel members are unfolded, a bed of the same plane is formed; and an expandable front support member slidably coupled to the front of the main body via a pull-out rail and pulled out toward the front of the main body. The invention is characterized by comprising: an extendable lateral support member that is slidably coupled to the side of the main body via a pull-out rail and is pulled out to the side of the main body, and whose upper portion is coupled to the side end of the third panel member of the bed unit to support the third panel member from the vehicle floor surface; a first extendable auxiliary panel and a second extendable auxiliary panel that are respectively provided to be pulled out to the front side of the first panel member and the second panel member, and whose front end is seated on the upper portion of the extendable front support member and supported in conjunction when the bed unit is unfolded in the same plane; a third extendable auxiliary panel that is provided to be pulled out to the front side of the third panel member, and whose front end is seated on the upper portion of the extendable front support member and supported in conjunction when the bed unit is unfolded in the same plane; and an auxiliary support member mounted on the other side of the front end of the third extendable auxiliary panel to support the front end of the third extendable auxiliary panel from the vehicle floor surface.

[0011] In addition, the present invention is characterized in that the extendable front support is configured to be movable in conjunction with the first to third extendable auxiliary panels by a forward pulling operation; wherein when the bed unit is unfolded into a bed state on the same plane, the first to third extendable auxiliary panels are pulled out together, and when the bed unit is in a backrest-type sofa state, only the third extendable auxiliary panel is selectively pulled out.

[0012] In addition, the present invention is characterized in that a roller is provided at the lower end of each of the extendable front support and the extendable side support so as to enable rolling movement along the vehicle floor surface; and the roller is configured to support the load and reduce movement friction during the process of the extendable front support and the extendable side support being withdrawn or retracted. Effects of the invention

[0013] According to the interlocking expandable bed device for a camping car according to the present invention, since the first to third panel members can be unfolded stepwise to form a wide bed on the same plane, the user can secure a stable and comfortable sleeping space even in the limited interior space of the camping car. In addition, since the first panel member and the second panel member can be erected in an overlapping state to form a backrest-type sofa structure, it can be used in a sofa form normally and converted into a bed form when needed, thereby improving the utilization of the vehicle's interior space. Furthermore, since the expansion area of ​​the bed can be stably supported by the expandable front support, the expandable side support, and the auxiliary support, it can prevent sagging that may occur during bed expansion and improve load-bearing stability. In particular, since both sides of the front end of the third expandable auxiliary panel are distributedly supported by the expandable front support and the auxiliary support, respectively, it can improve the support rigidity of the lateral expansion area and the end area of ​​the bed and minimize shaking or deformation during use. In addition, since a storage compartment is formed inside the main body, a small refrigerator and various electrical components can be efficiently stored, and the interior space utilization of the camper van can be improved without creating additional separate storage space.

[0014] In addition, according to the interlocking expandable bed device for a camping car according to the present invention, since the first to third expandable auxiliary panels can be extended together in conjunction with the pulling operation of the expandable front support, the user can quickly and conveniently unfold the bed structure with only a simple pulling operation without having to operate each expandable auxiliary panel individually. In particular, when the bed unit is unfolded into a bed state on the same plane, the first to third expandable auxiliary panels are pulled out together in conjunction, and when the bed unit is in a backrest-type sofa state, only the third expandable auxiliary panel can be selectively pulled out in conjunction, thus providing the effect of selectively implementing a sofa state, a temporary bed state, and an entire bed state depending on the purpose of use.

[0015] In addition, according to the interlocking expandable bed device for a camping car according to the present invention, rollers are provided at the lower ends of the expandable front support and the expandable side support, thereby reducing movement friction during the process of pulling out or storing each support and stably distributing the load, so that the user can smoothly expand and store the bed structure with minimal force. Brief explanation of the drawing

[0016] FIG. 1 shows a structure in which an interlocking expandable bed device for a camping car according to the present invention is folded into a sofa shape. FIG. 2 shows the structure of an interlocking expandable bed device for a camping car according to the present invention unfolded into a bed shape. Figure 3 shows the extended front support according to the present invention in a pulled-out state. FIG. 4 shows the state in which the first and second panel members are pulled out together with the extended front support according to the present invention. FIG. 5 shows the state in which the first, second, and third panel members are simultaneously withdrawn together with the extended front support according to the present invention. FIG. 6 shows the interlocking expandable bed device for a camping car according to the present invention in a state where it is folded into a sofa shape and the third panel member is pulled out together with the expandable front support. Specific details for implementing the invention

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, embodiments of the present invention may be modified in various forms, and the scope of the present invention is not limited to the embodiments described below. (For reference, in the description of the present invention, terms such as front, rear, both ends, left, right, upper side, lower side, horizontal direction, front and back, etc. are used to distinguish relative positions or directions and do not imply absolute positions or directions.)

[0018] The interlocking expandable bed device for a camping car according to the present invention is installed inside a camping car or vehicle and is configured to selectively switch between a sofa state and a bed state so as to efficiently utilize the limited interior space of the vehicle. To this end, the interlocking expandable bed device for a camping car according to the present invention may be configured to include, as shown in FIGS. 1 and 2, a main body (100) fixedly installed on the floor of a vehicle, a bed unit (200) positioned on the upper part of the main body (100) and foldably connected, an expandable front support (300) and an expandable side support (400) for supporting the bed unit (200) from the front and side, first to third expandable auxiliary panels (500, 600, 700; see FIGS. 4 and 5) drawn out from each panel member (210, 220, 230) of the bed unit (200), and an auxiliary support (800) for supporting the third expandable auxiliary panel (700).

[0019] Referring to FIGS. 1 and 2; the main body (100) according to the present invention can be fixed or seated on the floor inside a vehicle as a basic support for a bed device and is formed in the shape of an enclosure. A bed unit (200) is installed on the upper part of the main body (100), and a storage room (110) is formed inside. In an embodiment of the present invention, the storage room (110) is configured to store a small refrigerator and various electrical components, thereby allowing the vehicle interior space to be utilized efficiently without providing additional storage space. In addition, since the main body (100) functions as a reference structure for the bed unit (200) and each support structure, it plays a role in stably transmitting the load generated when the bed is deployed to the floor of the vehicle.

[0020] Referring to FIGS. 1 and 2, the bed unit (200) according to the present invention includes a first panel member (210), a second panel member (220), and a third panel member (230). The first panel member (210) is hinge-coupled to one side of the upper part of the main body (100), the second panel member (220) is hinge-coupled to one side of the first panel member (210), and the third panel member (230) is hinge-coupled to one side of the second panel member (220). Additionally, the third panel member (230) is arranged to slide in the left and right directions along the upper part of the main body (100) during the folding or unfolding process of the bed unit (200). Accordingly, the position of the third panel member (230) can be smoothly switched in conjunction with the folding operation of the first panel member (210) and the second panel member (220), so the structural transition between the sofa state and the bed state can be performed more stably. The first panel member (210) and the second panel member (220) can be switched between the folded state and the unfolded state. When the first panel member (210) and the second panel member (220) are standing up in an overlapping state, the bed unit (200) forms a backrest-type sofa structure that supports the user's back (see FIG. 1). In this case, the third panel member (230) can be arranged in an unfolded state so that the user can sit on it, thus allowing for wider utilization of the vehicle's interior space during normal use. On the other hand, when the first to third panel members (210, 220, 230) are unfolded sequentially, they form a flat plane with each other to form a wide bed surface (see FIG. 2). In this way, the bed unit (200) can selectively perform sofa and bed functions with a single structure.

[0021] Referring to FIG. 3, the extendable front support (300) is slidably connected to the front of the main body (100) via a pull-out rail (320) (see arrow direction in FIG. 3). When the bed is in use, the extendable front support (300) is pulled out to the front side of the main body (100) and supports the leading edge of each extendable auxiliary panel (500, 600, 700; see FIG. 4 and FIG. 5) that is pulled out to the front side from the first to third panel members (210, 220, 230). Therefore, the bed unit (200) is not merely unfolded by a hinge, but the load is reinforced by a separate support structure on the front side, so sagging or shaking can be reduced during use of the bed.

[0022] Referring to FIGS. 2 and FIGS. 3; the extendable side support (400) is slidably coupled to the side of the main body (100) via a pull-out rail (see arrow direction in FIGS. 2 and FIGS. 3), and its upper end is coupled to the side end of the third panel member (230) to support the third panel member (230) from the vehicle floor surface. Additionally, when the bed unit (200) forms a backrest type sofa, the extendable side support (400) can be accommodated in the side of the main body (100) (see FIG. 1). When the bed is in use, the extendable side support (400) unfolds together with the third panel member (230) to support the third panel member (230) and the surrounding extended area from the side. Accordingly, the bed unit (200) can be stably supported in the width direction or lateral extension area, and a large sleeping area can be secured even in the limited interior space of the camper van.

[0023] Referring to FIG. 4; the first extension auxiliary panel (500) and the second extension auxiliary panel (600) are each provided to be pulled out toward the front side at the lower part of the first panel member (210) and the second panel member (220) respectively (see the direction of the arrow in FIG. 4). When the bed is unfolded, the first extension auxiliary panel (500) and the second extension auxiliary panel (600) are pulled out toward the front side, and their leading ends are placed on the upper part of the extension front support (300) and seated thereon to be supported and interlocked. Accordingly, the load acting on the front area of ​​the first panel member (210) and the second panel member (220) is transferred to the extension front support (300), thereby preventing bending deformation of them.

[0024] Referring to FIG. 5; the third extension auxiliary panel (700) is provided so as to be pulled out forward at the lower part of the third panel member (230) (see arrow direction in FIG. 5). The third extension auxiliary panel (700) is supported and connected by being placed on the upper part of the extension front support (300) while the bed unit (200) is unfolded in the same plane or folded into a sofa shape.

[0025] And the auxiliary support (800) is mounted on the other side of the front end of the third extended auxiliary panel (700) and configured to support the front end of the third extended auxiliary panel (700) from the vehicle floor surface. Accordingly, since one side of the front end of the third extended auxiliary panel (700) is supported by the extended front support (300) and the other side is supported by the auxiliary support (800), the load-bearing stability for the lateral extension area and the end area of ​​the bed unit (200) can be further improved.

[0026] Additionally, the extendable front support (300) can be moved outward by a pulling motion in which the user pulls it forward, and in this process, the first extendable auxiliary panel (500), the second extendable auxiliary panel (600), and the third extendable auxiliary panel (700) can be configured to be pulled forward in conjunction with each other. Specifically, as shown in FIG. 5; when the bed unit (200) is unfolded into a bed state on the same plane, the first extendable auxiliary panel (500), the second extendable auxiliary panel (600), and the third extendable auxiliary panel (700) can be pulled forward together in conjunction with each other. Accordingly, the user can simultaneously extend the first to third extendable auxiliary panels (500, 600, 700) with only a simple motion of pulling the extendable front support (300) forward, thereby improving the convenience of the bed unfolding operation. On the other hand, as illustrated in FIG. 6; when the bed unit (200) is in a backrest-type sofa state, the first panel member (210) and the second panel member (220) are maintained in an upright state, so only the third extension-type auxiliary panel (700) can be selectively pulled out in conjunction. That is, the user can pull out only the third extension-type auxiliary panel (700) to the front while maintaining the sofa state to rest their legs on it or use it as a makeshift bed, thus enabling various forms of use even within the limited interior space of the vehicle. Since this third extension-type auxiliary panel (700) is supported in conjunction with the extension-type front support (300) and the auxiliary support (800), a stable load-bearing structure can be maintained even in a partially extended state.

[0027] Additionally, when the bed unit (200) is unfolded into a bed state on the same plane and the first to third extension auxiliary panels (500, 600, 700) are pulled out to the front, a mattress (not shown) can be placed on top of the bed unit (200) and the first to third extension auxiliary panels (500, 600, 700). The mattress can be positioned to cover the extended bed surface formed by the bed unit (200) and the first to third extension auxiliary panels (500, 600, 700), and accordingly, the user can use a more comfortable sleeping space without directly feeling the connection part or step difference between the panel member and the auxiliary panel. In addition, the mattress can be used as a seating cushion or backrest cushion when the bed unit (200) forms a backrest sofa state, and can be used as a sleeping cushion layer when in a bed state. Therefore, the present invention can improve the user's seating and sleeping comfort in both sofa and bed states by using the bed unit (200), the expandable auxiliary panel (500, 600, 700), and the mattress together.

[0028] Additionally, rollers (310) and (410) may be provided at the lower ends of the extendable front support (300) and the extendable side support (400), respectively. The rollers (310) and (410) rotate and move while making rolling contact with the vehicle floor surface during the process of extending or retracting each support, thereby reducing movement friction and allowing the user to easily extend or retract the bed with minimal force. Furthermore, the rollers (310) and (410) distribute the load of each support to the floor surface, thereby preventing sagging of the support structure and improving durability during repeated use.

[0029] In this way, the present invention provides a structure in which a bed unit (200) switches between a sofa state and a bed state, and an extendable front support (300), an extendable side support (400), a plurality of extendable auxiliary panels (500, 600, 700), and an auxiliary support (800) are organically combined, thereby providing a wide and stable bed space even in a limited space inside a camper van.

[0030] In addition, the present invention allows the first to third extension auxiliary panels (500, 600, 700) to be pulled out together or only the third extension auxiliary panel (700) to be selectively pulled out in conjunction depending on the unfolded state of the bed unit (200), so that a sofa state, a simple bed state, and an entire bed state can be selectively implemented depending on the purpose of use. Explanation of the symbols

[0031] 100..Main unit 110..Storage compartment 200..Bed unit 210..First panel member 220..2nd panel member 230..3rd panel member 300..Extendable front support 310..Roller 320..Pull-out rail 400..Extendable lateral support 410..Roller 500..1st extended auxiliary panel 600..2nd extended auxiliary panel 700..3rd extended auxiliary panel 800.. Auxiliary support

Claims

Claim 1 A linked expandable bed device for a camping car; a main body (100) in the shape of a housing installed inside a vehicle and having a storage compartment (110) formed inside; a first panel member (210) hinged to one side of the upper part of the main body (100), a second panel member (220) hinged to one side of the first panel member (210), and a third panel member (230) hinged to one side of the second panel member (220), wherein when the first panel member (210) and the second panel member (220) are in an overlapping state, a backrest-type sofa is formed, and when the first to third panel members (210, 220, 230) are unfolded, a bed unit (200) is slidably coupled to the front part of the main body (100) through a pull-out rail, and the An extendable front support (300) that is pulled out toward the front side of the main body (100); an extendable side support (400) that is slidably coupled to the side of the main body (100) via a pull-out rail and is pulled out toward the side of the main body (100), with its upper end coupled to the side end of the third panel member (230) of the bed unit (200) to support the third panel member (230) from the vehicle floor surface; a first extendable auxiliary panel (500) and a second extendable auxiliary panel (600) that are respectively provided to be pulled out toward the front side of the first panel member (210) and the second panel member (220), and when the bed unit (200) is unfolded in the same plane, their front ends are seated on the upper part of the extendable front support (300) to be supported and linked; and a third panel member (230) that is pulled out toward the front side. A connected expandable bed device for a camping car, characterized by comprising: a third expandable auxiliary panel (700) which is provided and, when the bed unit (200) is unfolded in the same plane, has one side of its front end seated on the upper part of the expandable front support (300) and supported in conjunction; and an auxiliary support (800) which is mounted on the other side of the front end of the third expandable auxiliary panel (700) and supports the front end of the third expandable auxiliary panel (700) from the vehicle floor surface. Claim 2 A linked extendable bed device for a camping car according to claim 1, wherein the extended front support (300) is configured to be movable in conjunction with the first to third extended auxiliary panels (500, 600, 700) by a forward pull-out operation; wherein when the bed unit (200) is unfolded into a bed state on the same plane, the first to third extended auxiliary panels (500, 600, 700) are pulled out together in conjunction, and when the bed unit (200) is in a backrest-type sofa state, only the third extended auxiliary panel (700) is selectively pulled out in conjunction. Claim 3 In claim 1, rollers (310) and (410) are respectively provided at the lower ends of the extendable front support (300) and the extendable side support (400) so as to be able to roll along the vehicle floor surface; the rollers (310) and (410) are configured to support the load and reduce movement friction during the process of the extendable front support (300) and the extendable side support (400) being pulled out or stored.

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