Assembled sofa bed for campervans
The campervan assembly sofa bed addresses the challenge of limited space in non-large campers by allowing conversion into a bed and sofa, providing comfortable accommodation for tall individuals.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2026-03-18
AI Technical Summary
The challenge is to install a sofa bed in non-large campers with limited interior space that can function as both a bed for sleeping and a sofa for daytime activities.
A campervan assembly sofa bed with a mounting base, seat, backrest, rotating rod, and lifting mechanism that allows the seat and backrest to be assembled into a horizontal position, and pairs of sofas facing each other to form a large bed.
Enables the installation of a sofa bed in non-large campervans, functioning as a bed for sleeping and a sofa for activities, accommodating tall individuals comfortably.
Smart Images

Figure 2026049416000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an assembled sofa bed that can be assembled from a sofa into a sofa bed, and particularly relates to an assembled sofa bed for a camper.
Background Art
[0002] Conventionally, the space inside a camper is limited, and it is difficult to install a sofa bed unless it is a fairly large camper.
[0003] However, in recent years, there has been a demand to install a sofa bed even in a non-large camper. When sleeping, it becomes a bed, and when engaged in daytime activities after waking up, there has been a demand for a proposed assembled sofa bed for a camper that can be configured to become a sofa from the bed in a limited space.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] The present invention was created to address the above conventional demands, and aims to provide an assembled sofa bed for a camper that can be installed even in a non-large camper with limited interior space, and can be assembled to become a bed when sleeping and a sofa when engaged in activities after waking up.
Means for Solving the Problems
[0006] The present invention is A campervan assembly sofa bed that allows a sofa installed inside the campervan to be assembled into a bed, The assembly sofa bed for campervans comprises a mounting base fixed to the bottom of the space inside the campervan, a seat and backrest rising from the rear of the seat, a rotating rod that allows the backrest to be placed on the seat and rotates the seat and backrest to be in a horizontal position, and a lifting member that lifts and moves the seat with the backrest on top forward. It has a horizontal operating member that is attached between the rear underside of the seat and the mounting base, and has an extendable mechanism to move the seat, which has been lifted forward by the lifting member, to a horizontal position, The seat surface, which has been lifted forward by the lifting member, is set to a horizontal position by the horizontal operating member, and the backrest, which is placed on top of the horizontally positioned seat surface, is rotatable by the pivot rod so that the top surface of the seat surface and the top surface of the backrest become substantially flush. It is characterized by the following: or The sofas are provided in pairs at predetermined intervals, and the pair of sofas are arranged facing each other, so that the two sofas can be brought together to form a large bed. It is characterized by the following: [Effects of the Invention]
[0007] The present invention provides an excellent feature: it allows for the installation of a sofa bed even in campervans that are not large and do not have much interior space, and it can be assembled to function as a bed for sleeping and as a sofa for activities after waking up. [Brief explanation of the drawing]
[0008] [Figure 1] This is an explanatory diagram (1) illustrating the assembled state of the modular sofa bed for camper vans according to the present invention. [Figure 2]This is an explanatory diagram (2) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Figure 3] This is an explanatory diagram (3) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Figure 4] This is an explanatory diagram (4) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Figure 5] This is an explanatory diagram (5) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Figure 6] This is an explanatory diagram (6) illustrating the assembled state of the modular sofa bed for camper vans according to the present invention. [Figure 7] This is an explanatory diagram (7) illustrating the assembled state of the modular sofa bed for camper vans according to the present invention. [Figure 8] This is an explanatory diagram (8) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Figure 9] This is an explanatory diagram (9) illustrating the assembled state of the modular sofa bed for campervans according to the present invention. [Modes for carrying out the invention]
[0009] The present invention will be described below based on the embodiments shown in the figures.
[0010] In the figure, reference numeral 1 indicates a mounting base. The mounting base 1 is made of, for example, a metal member having a predetermined rigidity and is firmly fixed to the bottom surface of a space provided behind the driver's seat of the camper van. Figure 6 shows the details of the mounting base 1, which is made up of, for example, a rectangular bar-shaped fixing member 6 fixed horizontally to the bottom surface of the space and an upper member 8 that extends horizontally in a similar manner to the fixing member 6 and is connected to the fixing member 6 via a connecting member 7. As can be seen from Figure 6, a pair of these mounting bases 1 are formed in the width direction of the assembled sofa bed 9.
[0011] Referring to the drawings such as FIG. 1 to describe the configuration of the present invention, a seating surface 2 for use in a sofa is installed on a pair of installation bases 1 in a movable state. Further, a backrest 3 is connected and installed at the rear of the seating surface 2 so as to have a predetermined inclination with the rear part of the seating surface 2 as a rotation axis.
[0012] Reference numeral 4 indicates a rotating rod. One end of the rotating rod 4 is pivotally supported and connected to a first protruding piece 19 protruding from the lower part of the back surface of the backrest 3, and the other end is pivotally supported and connected to a second protruding piece 20 protruding from the back surface of the seating surface 1 as understood from FIG. 5 and the like. Thus, the seating surface 1 and the backrest 3 are connected so as to have a predetermined inclination with the rear part of the seating surface 1 as a rotation axis.
[0013] Incidentally, the rotating rod 4 is composed of a first rotating rod 10 and a second rotating rod 11 that are bendably connected at a connecting portion 27. A pair of the bendable first rotating rod 10 and second rotating rod 11 connect the seating surface 2 and the backrest 3, and are configured such that an operation of overlapping the backrest 3 on the seating surface 2 or an operation of making it flush with the surface of the seating surface 2 can be performed. Also, it may be connected by only one rotating rod 4, but as shown in FIG. 5, if the seating surface 2 and the backrest 3 are connected by a plurality of rotating rods 4 by changing the location pivotally supported and connected to the second protruding piece 20, the durability and strength of locations such as the connecting portion 27 can be improved. Incidentally, as understood from FIG. 6, the installation bases 1 are provided in a pair in the width direction of a sofa bed 9 formed by assembly, and the rotating rod 4 is also provided on each of the two installation bases 1.
[0014] Here, when used as a sofa, it is used in the state shown in FIG. 1. However, when used as a sofa bed 9, the sofa is assembled into a sofa bed 9 according to the procedure shown in FIGS. 2 to 8.
[0015] First, as shown in FIG. 2, recline 3 is tilted toward the seat surface 2 side, and recline 3 is placed on top of seat surface 2. At this time, headboard 16 is removed. The stacking operation can be easily performed by operating rotation rod 4 composed of first rotation rod 10 and second rotation rod 11 that are connected so as to bend from connecting part 27 as described above.
[0016] Next, as shown in FIG. 3, operate to extend lifting rod 12 of seat surface 2 that is pivotally supported and connected in front of installation base 1 and third projection 21 protruding from the front back surface of seat surface 2 to lift the front side of seat surface 2 upward.
[0017] Here, for lifting member 12 as well, it is connected by first lifting rod 13 and second lifting rod 14 so as to be able to bend from connecting part 27. The tip of first lifting rod 13 is pivotally supported by third projection 21 protruding from the front back surface of seat surface 2 and is rotatably connected. The rear end of second lifting rod 14 is pivotally supported and rotatably connected in front of installation base 1. Also, first lifting rod 13 and second lifting rod 14 are rotatably pivotally connected only by rotation pin 28 provided on the one end side in the width direction, as can be understood from FIG. 3, on the front direction side in FIG. 3, only at the rear end part of first lifting rod 13 and the tip part of second lifting rod 14. When first lifting rod 13 and second lifting rod 14 are extended in a substantially straight line, the connecting end surfaces 22 of first lifting rod 13 and second lifting rod 14 are in close contact with each other, and the lifted seat surface 2 is structured so that it cannot accidentally bend at the location of connecting part 27. Therefore, the lifted seat surface 2 can safely hold the state in which the seat surface 2 is lifted.
[0018] Next, as shown in FIG. 4, perform an operation of horizontally arranging seat surface 2 with recline 3 stacked on it. This operation can be performed by rotating and operating lifting member 12 to extend further forward and by performing operations such as extending horizontal operation rod 15 of seat surface 2 that is pivotally supported and connected to second projection 20 on the rear back surface of seat surface 2.
[0019] Here, the horizontal operating rod 15 is configured to have a retaining piece 23 attached across the second projection 20 and the third projection 21, a first operating piece 24 whose tip is pivotally supported at a position slightly rearward from the longitudinal center of the retaining piece 23 and whose rear end is pivotally supported at the tip of the second operating piece 25, and a horizontal operating piece 26 pivotally supported at a position slightly towards the tip from the longitudinal center of the second operating piece 25.
[0020] To change the seat from the state shown in Figure 3 to the state shown in Figure 4, the horizontal operating piece 26 is moved to the left side of Figure 3 so that it is approximately vertical. This causes the rear side of the seat surface 2 to lift up, making the seat surface 2 horizontal as shown in Figure 4. When the seat surface is horizontal, the horizontal operating piece 26 changes from a slightly vertical to a slightly forward-leaning position, meaning that the tip of the horizontal operating piece 26 is slightly tilted forward. This, combined with the fact that the aforementioned lifting member 12 holds the front part of the seat surface 2 in a significantly forward-tilted position, ensures that the horizontal position of the seat surface 2 is safely maintained.
[0021] Next, as shown in Figure 5, the backrest 3 is operated so that it is horizontal, just like the seat 2 which is installed horizontally, and so that the surface of the seat 2 and the surface of the backrest 3 are flush. This operation is performed by rotating the aforementioned rotating rod 4.
[0022] Reference numeral 16 denotes a headboard that is attached to the front end of the sofa bed 9 when the sofa bed 9 is assembled. When the sofa is assembled, it is placed on the back of the backrest 3 as shown in Figure 1 to prevent it from being lost.
[0023] In this invention, as can be seen from Figures 6 and 7, a pair of sofas are arranged facing each other at a predetermined distance within the camper van. The opposing sofas are assembled so that their opposing seat surfaces 2 come into contact and form a single unit, creating an extremely long sofa bed 9. This allows for the creation of a sofa bed 9 that can comfortably accommodate even tall individuals while sleeping in the camper van.
[0024] Furthermore, the sofa bed 9 configured on the opposite side is equipped with a footboard 17 attached to its rear end, similar to the headboard 16 mentioned above.
[0025] Here, the operation of assembling the sofa into a sofa bed 9, or conversely, returning the assembled sofa bed 9 back to a sofa, can be easily performed by operating the control lever 18 to unlock or lock various parts of the sofa. [Explanation of Symbols]
[0026] 1 Installation stand 2 Seat 3 Backrest 4 Rotating rod 6 Fixing members 7 Connecting members 8 Upper component 9 sofa beds 10 1st moving rod 11 2nd moving rod 12 Lifting member 13. First lifting rod 14. Second lifting rod 15 Horizontal control rod 16 Headboard 17 Footboard 18. Operating levers 19. First projection 20 Second projection 21 Third projection 22 Connection end face 23 Holding piece 24 1st operation piece 25 2nd operation piece 26 Horizontal control piece 27 Connecting part 28 rotating pins
Claims
1. A campervan assembly sofa bed that allows a sofa installed inside the campervan to be assembled into a bed, The assembly sofa bed for campervans comprises a mounting base fixed to the bottom of the space inside the campervan, a seat and backrest rising from the rear of the seat, a rotating rod that allows the backrest to be placed on the seat and rotates the seat and backrest to be in a horizontal position, and a lifting member that lifts and moves the seat with the backrest on top forward. It has a horizontal operating member that is attached between the rear underside of the seat and the mounting base, and has an extendable mechanism to move the seat, which has been lifted forward by the lifting member, to a horizontal position, The seat surface, which has been lifted forward by the lifting member, is set to a horizontal position by the horizontal operating member, and the backrest, which is placed on top of the horizontally positioned seat surface, is rotatable by the pivot rod so that the top surface of the seat surface and the top surface of the backrest become substantially flush. A collapsible sofa bed for campervans, featuring the following characteristics.
2. The sofas are provided in pairs at predetermined intervals, and the pair of sofas are arranged facing each other, so that the two sofas can be brought together to form a large bed. The assembly sofa bed for camper vans according to claim 1, characterized in that it is a feature of the present invention.
Citation Information
Patent Citations
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JP1997002121A
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KR102367806B1