Motor home with expansion bed

By designing retractable bed boards and folding mattresses in RVs, the conversion between single and double beds can be achieved, solving the problem of limited bed size in RVs and improving space utilization and living comfort.

CN224170837UActive Publication Date: 2026-04-28WUHU ZHIHENG AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHU ZHIHENG AUTOMOBILE CO LTD
Filing Date
2025-05-16
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The existing RV beds are limited in size and cannot meet the needs of multiple users, affecting the user experience.

Method used

Design a motorhome with an extendable bed, using a telescopic bed board and a folding mattress, driven by an electric device to convert between a single bed and a double bed, cleverly utilizing the space in the aisle and bathroom.

Benefits of technology

The extendable bed can be converted into a single or double bed as needed, improving space utilization and enhancing the living comfort and functionality of the RV.

✦ Generated by Eureka AI based on patent content.

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Abstract

The motor home comprises a carriage and a walkway (5) penetrating through the head and tail directions of the carriage, the expansion bed is arranged on one side of the walkway, and the expansion bed comprises a telescopic bed board, a telescopic mechanism installed below the telescopic bed board and used for driving the telescopic bed board to transversely contract or stretch, and a folding mattress placed on the telescopic bed board; when the telescopic bed board shrinks, the walkway is avoided, and a single bed is formed; when the telescopic bed board extends, the extended bed board is positioned above the aisle to form a double bed; the expansion bed provided by the utility model not only can be used as a single bed, but also can be used as a double bed; the conversion of the single bed and the double bed is driven by the electric device, so that the operation is very convenient; the space of the aisle and the space of the toilet can be reused by the expansion bed, the arrangement of each area of the motor home is ingenious, the utilization rate is high, functions are complete, living is comfortable, and high applicability is achieved.
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Description

Technical Field

[0001] This utility model relates to motorhomes, and more particularly to a motorhome with an extendable bed. Background Technology

[0002] Modern people yearn for nature and enjoy driving RVs for camping, vacations, and adventures in the wild. However, due to the limitations of RV cabin size, the size of the RV bed cannot be made very large. In order to improve the user experience, the industry urgently needs to develop an RV with an extendable bed. Utility Model Content

[0003] The present invention aims to solve the above-mentioned problems of the prior art by proposing a motorhome with an extendable bed.

[0004] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is to design a motorhome with an extendable bed, including a carriage and an aisle running through the front and rear of the carriage. An extendable bed is provided on one side of the aisle. The extendable bed includes a telescopic bed board, a telescopic mechanism installed under the telescopic bed board to drive the telescopic bed board to retract or extend laterally, and a folding mattress placed on the telescopic bed board.

[0005] The telescopic bed board includes a fixed bed frame and a movable bed frame, a fixed bed board fixed to the fixed bed frame, and a movable bed board fixed to the movable bed frame. The fixed bed board includes a first longitudinal plate and multiple fixed bed board comb bars, which are evenly spaced and vertically fixed to the first longitudinal plate. The movable bed board includes a second longitudinal plate and multiple movable bed board comb bars, which are evenly spaced and vertically fixed to the second longitudinal plate. The fixed bed board comb bars and the movable bed board comb bars are interlocked. The telescopic mechanism is fixed between the fixed bed frame and the movable bed frame. The movable bed board has transverse guide rails at both ends, and the telescopic mechanism drives the movable bed frame and the movable bed board to move back and forth along the guide rails.

[0006] The fixed bed frame includes a first bed beam near the side wall of the carriage, a second bed beam near the aisle, and a third bed beam that connects the ends of the first and second bed beams laterally; the movable bed frame includes a fourth bed beam near the fixed bed frame, a fifth bed beam near the aisle, and a connecting rod that connects the fourth and fifth bed beams laterally.

[0007] The telescopic mechanism includes a motor and an electric push rod. The motor is fixed on the first bed beam, and one end of the electric push rod is connected to the fifth bed beam or connecting rod, while the other end is connected to the motor.

[0008] The headboard of the extendable bed is adjacent to a double-row sofa seat, which includes a backrest and a seat cushion. The backrest can be folded down and overlapped on top of the seat cushion. The folding mattress includes a first mattress and a second mattress placed longitudinally, and a third mattress placed laterally. The first and second mattresses are connected to each other. When the extendable bed board is extended and the backrest is folded down and overlapped on top of the seat cushion, the first and second mattresses are unfolded and placed on the extended fixed bed board and movable bed board, and the third mattress is placed on the backrest, forming a double bed. When the extendable bed board is retracted and the backrest is folded down and overlapped on top of the seat cushion, the first mattress is placed on the retracted fixed bed board and movable bed board, the second mattress hangs down along the edge of the extendable bed, and the third mattress is placed on the backrest, forming a single bed.

[0009] A transverse guide rail and a seat pushing mechanism are provided between the sofa seat and the vehicle floor. The seat pushing mechanism pushes the sofa seat to move laterally along the guide rail.

[0010] The end of the walkway facing the rear of the vehicle connects to the restroom; when the retractable bed is retracted, the retractable bed exits the restroom, and the restroom door can be opened or closed normally; when the retractable bed is extended, the retractable bed enters the restroom, and the restroom door can only be opened.

[0011] The bathroom door consists of a left door and a right door.

[0012] The extended bed is installed on one side of the walkway, and a storage cabinet is installed on the other side.

[0013] A drawer is located beneath the retractable bed board.

[0014] This utility model provides a motorhome with an extendable bed, which can be used as a single bed or a double bed. The conversion between single and double beds is driven by an electric device, making it very convenient to operate. The extendable bed can reuse the space of the aisle and bathroom. The motorhome is cleverly arranged with high utilization rate, complete functions, comfortable living, and strong applicability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the retracted extension bed;

[0016] Figure 2 It is a three-dimensional view of the extended bed when it is extended;

[0017] Figure 3 It is a 3D view of the mattress after the extendable bed has been extended;

[0018] Figure 4 This is a top view of the extended bed when it is extended.

[0019] Figure 5This is a top view of the extended bed with the mattress laid out after it has been extended;

[0020] Figure 6 This is a structural diagram of the extension bed;

[0021] Figure 7 This is a diagram of a folding mattress;

[0022] The following are the labels in the diagram: Fixed bed board (1a), Fixed bed frame (1c), First bed beam (1c1), Second bed beam (1c2), Third bed beam (1c3), Movable bed frame (1d), Fourth bed beam (1d2), Fifth bed beam (1d1), Connecting rod (1d3), First longitudinal plate (1a1), Fixed bed board comb rack (1a2), Movable bed board (1b), Second longitudinal plate (1b1), Movable bed board comb rack (1b2), Motor (2a), Electric push rod (2b), Sofa seat (3), Backrest (3a), Seat cushion (3b), First mattress (4a), Second mattress (4b), Third mattress (4c), Fourth mattress (4d), Aisle (5), Toilet (6), Left door (6a), Right door (6b), Flushing toilet (6c), Storage cabinet (7), Guide rail device (8), Drawer (9). Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] This utility model discloses a motorhome with an extendable bed, including a carriage and an aisle 5 running through the front and rear of the carriage. An extendable bed is provided on one side of the aisle. The extendable bed includes a telescopic bed board, a telescopic mechanism installed below the telescopic bed board to drive the telescopic bed board to retract or extend laterally, and a folding mattress placed on the telescopic bed board. When the telescopic bed board is retracted, it avoids the aisle, forming a single bed. When the telescopic bed board is extended, the extended bed board is above the aisle, forming a double bed.

[0025] Figure 1 A perspective view of the expanded bed retracting is shown. Figure 2 A three-dimensional view of the extended bed in motion is shown. Figure 4 This is a top view of the extended bed. In RVs, space is limited, and generally, the aisle is not used when sleeping. This invention allows for efficient reuse of aisle space. It makes the RV's various areas compact, fully functional, and comfortable to live in, demonstrating strong applicability.

[0026] See Figure 6The schematic diagram of the preferred embodiment of the extendable bed shows that the telescopic bed board includes a fixed bed frame 1c and a movable bed frame 1d, a fixed bed board 1a fixed to the fixed bed frame, and a movable bed board 1b fixed to the movable bed frame. The fixed bed frame 1c and the movable bed frame 1d can be made of metal (such as aluminum alloy), while the fixed bed board 1a and the movable bed board 1b can be made of wood. The fixed bed board 1a includes a first longitudinal plate 1a1 and multiple fixed bed board comb bars 1a2, which are evenly spaced and vertically fixed to the first longitudinal plate. The movable bed board 1b includes a second longitudinal plate 1b1 and multiple movable bed board comb bars 1b2, which are evenly spaced and vertically fixed to the second longitudinal plate. The fixed bed board comb bars and the movable bed board comb bars are interlocked. The gap between two adjacent fixed bed board comb racks 1a2 can accommodate one movable bed board comb rack 1b2, and the gap between two adjacent movable bed board comb racks 1b2 can accommodate one fixed bed board comb rack 1a2. The telescopic mechanism is fixed between the fixed bed frame 1c and the movable bed frame 1d; each end of the movable bed board 1b is provided with a transverse guide rail device 8, and the telescopic mechanism drives the movable bed frame and the movable bed board to move back and forth along the guide rail devices. (See reference...) Figure 6 The structure of the guide rail device 8 is similar to the telescopic guide rails on both sides of furniture drawers. This guide rail is a finished product purchased from the market, and its structure will not be described in detail here.

[0027] See Figure 6 The fixed bed frame 1c includes a first bed beam 1c1 near the side wall of the carriage, a second bed beam 1c2 near the aisle 5, and a third bed beam 1c3 that transversely connects the ends of the first bed beam 1c1 and the second bed beam 1c2. Figure 6 There are 2 in total); the movable bed frame 1d includes a fourth bed beam 1d2 near the fixed bed frame, a fifth bed beam 1d1 near the aisle 5, and a connecting rod 1d3 transversely connecting the fourth bed beam 1d2 and the fifth bed beam 1d1. Figure 6 (There are 9 articles in the CCP).

[0028] The telescopic mechanism includes a motor 2a and an electric push rod 2b. The motor 2a is fixed on the first bed beam 1c1, and one end of the electric push rod 2b is connected to the fifth bed beam 1d1 or connecting rod 1d3, and the other end is connected to the motor 2a.

[0029] exist Figure 6 In the preferred embodiment shown, there are two sets of telescopic mechanisms, so that the thrust is balanced and the mechanism will not deform. Through holes are opened on the second bed beam 1c2 and the fourth bed beam 1d2, and the electric push rod 2b passes through the through holes to connect the connecting block between the two connecting rods 1d3.

[0030] In a preferred embodiment, the headboard of the extendable bed is adjacent to a double-row sofa seat 3, which includes a backrest 3a and a seat cushion 3b, the backrest being able to fold down and overlap the seat cushion. (See attached image) Figure 1 , 2 Items 4 and 6 show sofas with upright backrests. (Attached) Figure 3 , 5 The sofa backrest is in the forward-folded position. The folding mattress includes a first mattress 4a and a second mattress 4b placed longitudinally, and a third mattress 4c placed laterally. The first and second mattresses are connected to each other. When the telescopic bed board is extended and the backrest is folded down and overlapped on the seat cushion, the first and second mattresses are unfolded and placed on the extended fixed bed board 1a and movable bed board 1b, and the third mattress is placed on the backrest, forming a double bed. When the telescopic bed board is retracted and the backrest is folded down and overlapped on the seat cushion, the first mattress 4a is placed on the retracted fixed bed board 1a and movable bed board 1b, the second mattress 4b hangs down along the edge of the extended bed, and the third mattress is placed on the backrest, forming a single bed. Figure 5 The image shown is a top view of the unfolded folding mattress. Figure 7 This is a 3D diagram showing how a folding mattress is folded. Figure 3 This shows a perspective view of the extended bed with the mattress laid out after it has been extended. (See attached image.) Figure 3 and 5 The folding mattress is in its unfolded state. (Attached) Figure 7 In the middle, the folding mattress is in a folded state. It should be noted that in a preferred embodiment, the third mattress 4c is also connected to the fourth mattress 4d; the two are connected by a fabric cover and can be folded together when not in use to reduce storage space. The first mattress 4a and the second mattress 4b are also connected by a fabric cover. When the extendable bed is not in use, the sofa back can be upright (e.g., ...). Figure 1 (As shown), fold the mattress and place it on the extendable bed board (as shown). Figure 7 (As shown).

[0031] In a preferred embodiment, a transverse guide rail and a seat pushing mechanism are provided between the sofa seat 3 and the vehicle floor. The seat pushing mechanism pushes the sofa seat to move laterally along the guide rail. (Comparative Appendix) Figure 1 and Figure 4 When the extendable bed is in single-bed mode, the sofa seat 3 is positioned close to the side wall of the carriage, making the aisle 5 more spacious and easier for passengers to walk on. When the extendable bed is in double-bed mode, the sofa seat 3 moves laterally towards the aisle 5 to position its backrest between the third mattress 4c and the fourth mattress 4d, providing more stable support for them. The seat pushing mechanism is electrically driven, making it very convenient to operate.

[0032] See Figure 1 and Figure 2 In the preferred embodiment shown, the end of the aisle 5 facing the rear of the vehicle connects to the toilet 6. When the retractable bed panel is retracted, it exits the toilet, and the toilet door can be opened or closed normally. When the retractable bed panel is extended, it enters the toilet, and the toilet door can only be opened. In this way, the extendable bed can reuse the space of the aisle and toilet, resulting in a cleverly arranged and highly functional RV with high usability and comfortable living conditions, making it highly adaptable.

[0033] See Figure 1 and Figure 2 In the preferred embodiment shown, the bathroom door includes a left door leaf 6a and a right door leaf 6b. The left door leaf 6a is a single-leaf door, while the right door leaf 6b is a folding door. This allows for a more efficient layout and saves space. See also... Figure 4 or Figure 5 The icon 6c refers to a flush toilet.

[0034] See Figure 1 or Figure 2 In the preferred embodiment shown, the extendable bed is installed on one side of the aisle 5, and a storage cabinet 7 is installed on the other side. This maximizes the use of space within the carriage and increases storage space.

[0035] See Figure 6 or Figure 7 In the preferred embodiment shown, a drawer 9 is provided below the telescopic bed board. This maximizes the use of space inside the carriage and increases storage space.

[0036] The above embodiments are merely illustrative and not intended to be limiting. Any equivalent modifications or alterations made without departing from the spirit and scope of this application should be included within the scope of the claims of this application.

Claims

1. A motorhome with an extendable bed, comprising a carriage and an aisle (5) running through the front and rear of the carriage, characterized in that: One side of the walkway is equipped with an extension bed, which includes a telescopic bed board, a telescopic mechanism installed under the telescopic bed board to drive the telescopic bed board to retract or extend laterally, and a folding mattress placed on the telescopic bed board. When the telescopic bed board is retracted, it avoids the aisle, forming a single bed; When the telescopic bed board is extended, the extended bed board is positioned above the aisle, forming a double bed.

2. The RV with an extendable bed as described in claim 1, characterized in that: The telescopic bed board includes a fixed bed frame (1c) and a movable bed frame (1d), a fixed bed board (1a) fixed on the fixed bed frame, and a movable bed board (1b) fixed on the movable bed frame; The fixed bed board (1a) includes a first longitudinal plate (1a1) and multiple fixed bed board comb bars (1a2), wherein the fixed bed board comb bars are evenly spaced and vertically fixed to the first longitudinal plate. The movable bed board (1b) includes a second longitudinal plate (1b1) and multiple movable bed board comb bars (1b2). The movable bed board comb bars are fixed to the second longitudinal plate at even intervals and vertically. The fixed bed board comb bars and the movable bed board comb bars are interlocked and engaged together. The telescopic mechanism is fixed between the fixed bed frame (1c) and the movable bed frame (1d); the movable bed board (1b) is provided with transverse guide rail devices (8) at both ends, and the telescopic mechanism drives the movable bed frame and the movable bed board to move back and forth along the guide rail devices.

3. The RV with an extendable bed as described in claim 2, characterized in that: The fixed bed frame (1c) includes a first bed beam (1c1) near the side wall of the carriage, a second bed beam (1c2) near the aisle (5), and a third bed beam (1c3) that connects the ends of the first bed beam (1c1) and the second bed beam (1c2) laterally. The movable bed frame (1d) includes a fourth bed beam (1d2) near the fixed bed frame, a fifth bed beam (1d1) near the aisle (5), and a connecting rod (1d3) that connects the fourth bed beam (1d2) and the fifth bed beam (1d1) laterally.

4. The RV with an extendable bed as described in claim 3, characterized in that: The telescopic mechanism includes a motor (2a) and an electric push rod (2b). The motor (2a) is fixed on the first bed beam (1c1). One end of the electric push rod (2b) is connected to the fifth bed beam (1d1) or the connecting rod (1d3), and the other end is connected to the motor (2a).

5. The RV with an extendable bed as described in claim 4, characterized in that: The head of the extended bed is close to a double-row sofa seat (3), which includes a backrest (3a) and a seat cushion (3b). The backrest can be folded down and overlapped on top of the seat cushion. The folding mattress includes a first mattress (4a) and a second mattress (4b) placed longitudinally and a third mattress (4c) placed laterally, with the first mattress and the second mattress connected to each other; When the telescopic bed board is extended and the backrest is folded down and overlapped on the seat cushion, the first mattress (4a) and the second mattress (4b) unfold and are placed on the extended fixed bed board (1a) and movable bed board (1b), and the third mattress is placed on the backrest to form a double bed; When the telescopic bed board is retracted and the backrest is folded down and overlapped on the seat cushion, the first mattress (4a) is placed on the retracted fixed bed board (1a) and movable bed board (1b), the second mattress (4b) hangs down along the edge of the extended bed, and the third mattress is placed on the backrest to form a single bed.

6. The RV with an extendable bed as described in claim 5, characterized in that: The sofa seat (3) is provided with a transverse guide rail and a seat pushing mechanism between it and the carriage floor. The seat pushing mechanism pushes the sofa seat to move laterally along the guide rail.

7. The RV with an extendable bed as described in claim 6, characterized in that: The end of the walkway (5) facing the rear of the vehicle connects to the restroom (6); When the telescopic bed board is retracted, it exits the bathroom, and the bathroom door can be opened or closed normally. When the retractable bed board is extended, it enters the bathroom, and the bathroom door can only be opened.

8. The RV with an extendable bed as described in claim 7, characterized in that: The bathroom door includes a left door leaf (6a) and a right door leaf (6b).

9. The RV with an extendable bed as described in claim 8, characterized in that: The extended bed is provided on one side of the walkway (5), and a storage cabinet (7) is provided on the other side.

10. The RV with an extendable bed as described in claim 1, characterized in that: A drawer (9) is provided below the telescopic bed board.