Folding sofa for motor home and application method thereof

Abstract

The invention relates to the technical field of recreational vehicles, in particular to a folding sofa for a recreational vehicle and an application method of the folding sofa, and by designing a rotatable backrest and a slidable cushion, the folding sofa for the recreational vehicle can realize multifunctional transformation in a limited space. Due to the design of the sliding rails on the base, the seat can slide in the length direction of the base, so that the seat is unfolded and folded, and the space utilization rate is increased. The design that the backrest and the cushion are hinged and matched with the locking mechanism enables the backrest to rotate relative to the cushion and be locked at different angles, and more comfortable sitting and lying experience is provided for a user. Due to the design of the extension plate, the usable area of the sofa is further increased, the functionality and comfort of the sofa are improved, when the backrest is put down and the seat is pulled to adjust the position, the whole seat can be put down, at the moment, the sofa can be used as a bed by pulling out the extension plate, and the functional diversity is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of recreational vehicles, and in particular to a folding sofa for recreational vehicles and an application method thereof. Background Art

[0002] An RV, also known as a "home on wheels", combines the functions of a "house" and a "car", but its attribute is still a car. It is a mobile vehicle with the basic facilities necessary for a home.

[0003] The household facilities on the vehicle include: bedding, stoves, refrigerators, cabinets, sofas, dining tables and chairs, washing facilities, air conditioners, televisions, stereos and other furniture and electrical appliances. It can be divided into driving area, living area, bedroom area, sanitary area, kitchen area, etc. The RV is a fashionable product that integrates "clothing, food, housing and transportation" and realizes "traveling in life and living in travel".

[0004] However, sofas in RVs often adopt a fixed structure, which easily leads to the user being unable to adjust the position of the sofa according to his or her own comfort to achieve the best comfortable position after sitting on the sofa. Summary of the invention

[0005] In order to solve the problem that sofas on RVs in the prior art often adopt a fixed structure, which easily leads to the user being unable to adjust the sofa position according to his or her own comfort to achieve the best comfortable position after sitting on the sofa, the present application provides a folding sofa for RVs, and the specific solution is as follows.

[0006] A folding sofa for a motorhome, comprising a base and a seat, wherein the base is used for fixed installation in the motorhome, a slide rail is arranged on the base, the slide rail is arranged along the width direction of the base, a plurality of slide rails are arranged along the length direction of the base, the seat is slidably connected to the slide rail, and the seat is arranged along the length direction of the base; The seat comprises a backrest and a seat cushion, the backrest and the seat cushion are hinged, a locking mechanism is arranged between the backrest and the seat cushion, and the locking mechanism is used to limit the rotation of the backrest; The seat is also slidably connected with an extension plate, which is slidably connected to the seat and arranged on the lower side of the seat cushion. The extension plate is arranged along the length direction of the seat and slides along the width direction of the seat.

[0007] By adopting the above technical solutions, the folding sofa for RVs can achieve multifunctional transformation in a limited space. The slide rail design on the base allows the seat to slide along the length of the base, thereby realizing the unfolding and folding of the seat, improving space utilization. The design of the hinged locking mechanism between the backrest and the seat cushion allows the backrest to rotate and lock at different angles relative to the seat cushion, providing users with a more comfortable sitting and lying experience. The design of the extension board further increases the use area of ​​the sofa, improves the functionality and comfort of the sofa, and when the backrest is lowered and the seat is pulled to adjust the position, the entire seat can be lowered. At this time, the sofa can be used as a bed by pulling out the extension board, further improving the diversity of functions.

[0008] Optionally, a sliding frame is provided at the bottom of the seat cushion, the sliding frame is slidably connected to the slide rail, and the extension plate is slidably connected to the sliding frame, and both ends of the sliding frame can be clamped with the extension plate.

[0009] By adopting the above technical solution, the sliding frame arranged at the bottom of the seat cushion can slide along the slide rail, and the extension plate is slidably connected to the sliding frame. The two ends of the sliding frame can be clamped with the extension plate, thereby achieving a stable connection and smooth sliding between the extension plate and the sliding frame. The sliding frame can move in two directions.

[0010] Optionally, a drawer is further provided on the side wall of the base, the drawer is slidably connected to the base, a handle is fixedly connected to the drawer, and the drawer is used to store items.

[0011] By adopting the above technical solution, drawers are provided to store items, which adds a storage function to the basic function of the sofa, making it convenient for users to store sundries, further improving space utilization and ease of use.

[0012] Optionally, the locking mechanism includes a locking cover and a locking rod, a hinged rod is provided at the hinge of the backrest and the seat cushion, the hinged rod is fixedly connected to the backrest, and the hinged rod is connected to the seat cushion, the locking cover is sleeved on the end of the hinged rod, and a locking gear is provided on the end of the hinged rod, the middle part of the locking rod is hinged to the locking cover, and a locking rack is provided at the end of the locking rod extending into the locking cover, and the locking rack can mesh with the locking gear, and a torsion spring is provided at the hinge of the locking rod, and the torsion spring has a tendency to drive the locking rack to move toward the locking gear.

[0013] By adopting the above technical solution, when the locking rod is not operated, the locking rod is driven by the torsion spring to engage with the locking gear. At this time, when the hinged rod is rotated, the locking gear is limited by the locking rod, and the locking gear cannot rotate normally. Therefore, the hinged rod cannot rotate normally, and the backrest cannot be flipped and adjusted. When the backrest needs to be adjusted, the hinged rod is rotated to loosen the locking gear. At this time, the backrest can be adjusted, which improves the stability of the backrest when no adjustment is required.

[0014] Optionally, an expansion mechanism is also provided next to the seat, wherein the expansion mechanism is used for being slidably connected to the RV and can be driven by a motor to extend out of the RV to expand the space, and the expansion mechanism is used for abutting against a backrest.

[0015] By adopting the above technical solution, the expansion mechanism arranged beside the seat can be extended out of the RV under the drive of the motor vehicle, thereby effectively expanding the internal space of the RV. After being retracted, the expansion mechanism can abut against the backrest, which can limit the folding of the backrest, reduce the folding of the backrest when the RV is driving, and further improve the stability and comfort of the seat when it is unfolded.

[0016] Optionally, a guide rail is provided on the expansion mechanism, a guide groove is provided on the backrest and the same guide groove is also provided in the RV, the guide rail is used to be slidably connected with the guide groove, the guide rail of the backrest runs through the backrest, and an adsorption part is also provided on the side wall of the backrest, the adsorption part is used for being adsorbed by the electromagnet on the inner wall of the RV, and when the adsorption part is adsorbed, the guide groove is aligned with the guide rail.

[0017] By adopting the above technical solution, the guide rail on the expansion mechanism cooperates with the guide groove on the backrest and the same guide groove set in the RV, so that the backrest can be slidably connected along the guide rail, providing a guide for the expansion mechanism, and the expansion mechanism can also improve the support effect of the backrest. The adsorbent on the side wall of the backrest can be adsorbed by the electromagnet on the inner wall of the RV, ensuring that the guide groove and the guide rail are accurately aligned, reducing the interference of the expansion mechanism with the seat due to misalignment, thereby improving the stability and smoothness of the sofa during expansion and storage.

[0018] Optionally, the guide rail is arranged in an I-shape, and the guide groove is also arranged corresponding to the shape of the guide rail, and the guide rail is confined in the guide groove when embedded in the guide groove.

[0019] By adopting the above technical solution, the guide rail is arranged in an I-shape and embedded in the guide groove, so that the guide rail can be effectively limited when embedded in the guide groove, ensuring that the backrest is stable and reliable during movement, avoiding shaking or detachment, and further improving the stability of the backrest.

[0020] Optionally, a plurality of guide wheels are arranged on the guide rail, and a wheel groove is formed at the guide groove corresponding to the guide wheel, the guide wheel can abut against the groove wall of the wheel groove, and the wheel groove is connected to the guide groove.

[0021] By adopting the above technical solution, a plurality of guide wheels are arranged on the guide rail, and a wheel groove is opened at the guide groove corresponding to the guide wheel. The guide wheel can abut against the groove wall of the wheel groove, and the wheel groove is connected with the guide groove, so that the guide rail moves more smoothly in the guide groove, the friction force is reduced, the guiding accuracy and stability are improved, and the smoothness of the sofa during the unfolding and folding process is enhanced. When the guide groove is not fully aligned, the guide wheel can also reduce the interference with the sofa, thereby increasing the service life of the sofa.

[0022] Optionally, a mounting groove is further provided at the guide groove, the mounting groove is communicated with the guide groove, an airbag is provided in the mounting groove, the airbag is used to be inflated to abut against the guide rail, and an airbag is also provided in the wheel groove, the airbag is used to abut against the guide wheel.

[0023] By adopting the above technical solution, when the guide rail extends into the guide groove and needs to be positioned, gas can be filled into the airbag, and the airbag can abut against the guide rail to limit the guide rail in the guide rail, thereby reducing looseness and reducing the shaking of the backrest, thereby improving the comfort of the ride. By abutting the guide wheel with the airbag, the rotation of the guide wheel can be limited, further improving stability and reducing sliding of the expansion mechanism.

[0024] The present application also provides a method for applying a folding sofa for a vehicle, comprising the folding sofa for a motorhome described in claims 1 to 9, and adopting the following steps: a. Release the gas in the airbag, extend the expansion mechanism out of the RV, and wait for the guide rail to move out of the backrest; b. Release the locking mechanism and adjust the backrest while pulling the seat cushion; c. Pull out the extension board to unfold the sofa; d. Open the locking mechanism and adjust the backrest while pulling back the seat cushion; e. Align the guide groove with the guide rail; f. Retract the expansion mechanism, and after it is fully retracted, inflate the airbag to complete the folding of the sofa.

[0025] By adopting the above technical solution, the backrest and the seat cushion are locked by the locking mechanism when not in use to ensure the stability of the sofa, and the airbag is inflated to further fix the backrest. When it is needed, the gas in the airbag can be released to extend the expansion mechanism out of the RV, so that the guide rail is moved out of the backrest, so that the backrest angle can be adjusted and the extension board can be pulled out to complete the unfolding of the sofa and increase the usable space. When the sofa needs to be folded, the guide groove is aligned with the guide rail, the expansion mechanism is retracted, and finally the airbag is inflated so that the airbag abuts the guide rail to achieve stable fixation and complete the folding of the sofa.

[0026] In summary, this application has at least the following beneficial effects: 1. The present application solves the problem that the sofas on RVs in the prior art often adopt a fixed structure, which easily leads to the problem that after the user sits on the sofa, the user cannot adjust the sofa position according to his or her own comfort to achieve the best comfortable position. The present application arranges multiple slide rails along the length direction on the base, and slides the seat to the slide rails so that the seat can slide along the length direction of the base. After moving, the sofa can be placed in the direction of the backrest to form a bed, thereby expanding the sofa area without changing the original layout and improving the user's comfort when resting.

[0027] 2. The locking mechanism provided between the backrest and the seat cushion in the present application can effectively limit the rotation of the backrest, simplify the operation steps and improve the convenience of use.

[0028] 3. This application also provides an expansion mechanism, which can not only expand the space of the RV, but also block the seat backs, thereby reducing the chances of the seats being folded down during driving and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0030] Figure 2 It is a cross-sectional view of the first embodiment.

[0031] Figure 3 It is a cross-sectional view of the first embodiment, mainly used to show the situation inside the locking cover.

[0032] Figure 4 It is a cross-sectional view of the locking cover in the first embodiment.

[0033] Figure 5 It is a cross-sectional view of the second embodiment, mainly used to show the guide groove.

[0034] Figure 6 It is a cross-sectional view of the second embodiment, mainly used to show the wheel groove.

[0035] Description of reference numerals: 1. Base; 11. Slide rail; 12. Sliding rack; 13. Extension board; 14. Drawer; 141. Handle; 2. Seat; 21. Backrest; 211. Guide groove; 212. Adsorption member; 213. Wheel groove; 214. Mounting groove; 215. Airbag; 22. Cushion; 3. Locking cover; 31. Locking rod; 311. Locking rack; 32. Locking gear; 33. Articulated rod; 4. expansion mechanism; 41. guide rail; 411. guide wheel. DETAILED DESCRIPTION

[0036] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0037] Embodiment 1 A folding sofa for a motorhome, such as Figure 1 Shown and Figure 2 As shown, it includes a base 1 and a seat 2. The base 1 is used for fixed installation in the RV. The base 1 is provided with a slide rail 11. The slide rail 11 is provided along the width direction of the base 1. A plurality of slide rails 11 are provided along the length direction of the base 1. The seat 2 is slidably connected to the slide rail 11. The seat 2 is provided along the length direction of the base 1. The seat 2 includes a backrest 21 and a seat cushion 22. The backrest 21 and the seat cushion are hinged. A locking mechanism is provided between the backrest 21 and the seat cushion. The locking mechanism is used to limit the rotation of the backrest 21. In specific implementation, the seat cushion 22 is slidably connected to the slide rail 11 and driven by a motor or a cylinder, so that the seat cushion 22 can slide along the slide rail 11. When unfolding, the seat cushion 22 can be adjusted so that the backrest 21 can be lowered, thereby completing the adjustment.

[0038] like Figure 1 and Figure 2 As shown, the seat 2 is also slidably connected with an extension plate 13, which is slidably connected to the seat 2. The extension plate 13 is arranged on the lower side of the seat cushion 22, and is arranged along the length direction of the seat 2 and slides along the width direction of the seat 2. A sliding frame 12 is arranged at the bottom of the seat cushion 22, and the sliding frame 12 is slidably connected to the slide rail 11. The extension plate 13 is slidably connected to the sliding frame 12, and both ends of the sliding frame 12 can be engaged with the extension plate 13. In specific implementation, the sliding frame 12 is fixedly connected to the seat cushion, and the sliding frame 12 can slide along the slide rail 11 under the drive of a motor or a cylinder. The extension plate 13 can be fixed by a snap-on method when it is extended or extended, thereby limiting the movement of the extension plate 13 and extending the length of the sofa.

[0039] like Figure 1 and Figure 2 As shown, a drawer 14 is also provided on the side wall of the base 1, the drawer 14 is slidably connected to the base 1, a handle 141 is fixedly connected to the drawer 14, and the drawer 14 is used to store items. In specific implementation, the drawer 14 can store certain items to increase the storage space in the RV.

[0040] like Figure 2 and Figure 3As shown, the locking mechanism includes a locking cover 3 and a locking rod 31, a hinged rod 33 is provided at the hinged joint between the backrest 21 and the seat cushion, the hinged rod 33 is fixedly connected to the backrest 21, and the hinged rod 33 is connected to the seat cushion, the locking cover 3 is sleeved on the end of the hinged rod 33, and a locking gear 32 is provided on the end of the hinged rod 33, the middle part of the locking rod 31 is hinged to the locking cover 3, and a locking rack 311 is provided at one end of the locking rod 31 extending into the locking cover 3, and the locking rack 311 can mesh with the locking gear 32, and a torsion spring is provided at the hinged joint of the locking rod 31, and the torsion spring has a tendency to drive the locking rack 311 to move toward the locking gear 32. In specific implementation, the locking rod 31 can rotate to disengage the locking rack 311 from the engagement with the locking gear 32, thereby releasing the locking gear 32, so that the hinged rod 33 can be rotated for adjustment. After the adjustment is completed, the locking rod 31 can be released, and the locking rod 31 can lock the hinged rod 33 again.

[0041] Working principle: The backrest 21 can be adjusted by adjusting the locking mechanism. When the backrest 21 cannot be completely lowered, the seat cushion 22 can be moved to make way, so that the entire sofa can be spread out into a bed.

[0042] Embodiment 2 A folding sofa for a motorhome, such as Figure 5 and Figure 6 As shown, an expansion mechanism 4 is also provided beside the seat 2, and the expansion mechanism 4 is used for sliding connection with the RV and can be driven by a motor to extend out of the RV to expand the space, and the expansion mechanism 4 is used to abut against the backrest 21. In specific implementation, the expansion space is usually a hollow frame inside, and is replaced by a solid block for ease of display in the figure. When the expansion space is extended, it can just make room for the sofa, and when it is retracted, it can abut against the sofa, restricting the backrest 21 from being folded down, thereby increasing safety during driving.

[0043] like Figure 5 and Figure 6 As shown, the expansion mechanism 4 is provided with a guide rail 41, the backrest 21 is provided with a guide groove 211, and the same guide groove 211 is also provided in the RV, the guide rail 41 is used to be slidably connected with the guide groove 211, the guide rail 41 of the backrest 21 is arranged through the backrest 21, and an adsorbent 212 is also arranged on the side wall of the backrest 21, the adsorbent 212 is used for being adsorbed by the electromagnet on the inner wall of the RV, and when the adsorbent 212 is adsorbed, the guide groove 211 is aligned with the guide rail 41. In specific implementation, the adsorbent 212 includes a magnetic block or an iron block, and when it is close to the electromagnet provided on the tram, the electromagnet is activated to adsorb the adsorbent 212, thereby aligning the guide groove 211 with the guide rail 41, so that the guide rail 41 can be stably sent into the guide groove 211.

[0044] like Figure 5 and Figure 6As shown, the guide rail 41 is arranged in an I-shaped shape, and the guide groove 211 is also arranged corresponding to the shape of the guide rail 41. When the guide rail 41 is embedded in the guide groove 211, it is restricted in the guide groove 211. A plurality of guide wheels 411 are arranged on the guide rail 41, and a wheel groove 213 is also provided at the guide groove 211 corresponding to the guide wheel 411. The guide wheel 411 can abut against the groove wall of the wheel groove 213, and the wheel groove 213 is connected to the guide groove 211. In a specific implementation, the guide wheel 411 can run along the wheel groove 213, so that the guide wheel 411 moves more smoothly along the guide groove 211.

[0045] like Figure 5 and Figure 6 As shown, the guide groove 211 is also provided with a mounting groove 214, the mounting groove 214 is communicated with the guide groove 211, an airbag 215 is arranged in the mounting groove 214, the airbag 215 is used to inflate and abut the guide rail 41, and the wheel groove 213 is also provided with an airbag 215, the airbag 215 is used to abut the guide wheel 411. In specific implementation, the airbag 215 can abut and press the guide wheel 411 and the guide rail 41, thereby further limiting the movement of the guide rail 41, which can not only reduce the sliding of the guide rail 41, but also increase the stability between the guide rail 41 and the backrest 21, thereby improving the stability of the sofa as a whole.

[0046] This embodiment also provides an application method of the folding sofa for RV, including the above-mentioned folding sofa for RV, and adopts the following steps: a. Release the gas in the airbag 215, extend the expansion mechanism 4 out of the RV, and wait for the guide rail 41 to move out of the backrest 21; b. Release the locking mechanism and adjust the backrest 21 while pulling the seat cushion 22; c. Pull out the extension board 13 to complete the unfolding of the sofa; d. Open the locking mechanism and adjust the backrest 21 while pulling back the seat cushion 22; e. Align the guide groove 211 with the guide rail 41; f. Retract the expansion mechanism 4, and after it is fully retracted, inflate the airbag 215 to complete the folding of the sofa.

[0047] Working principle: The basic working principle is the same as that of the first embodiment. The second embodiment adds an expansion mechanism 4, a guide rail 41 and a guide groove 211, which further limits the adjustment of the backrest 21 and can also increase the stability of the backrest 21.

[0048] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A folding sofa for a motorhome, characterized in that: The invention comprises a base (1) and a seat (2), wherein the base (1) is used for fixed installation in a recreational vehicle, a slide rail (11) is arranged on the base (1), the slide rail (11) is arranged along the width direction of the base (1), a plurality of slide rails (11) are arranged along the length direction of the base (1), the seat (2) is slidably connected to the slide rail (11), and the seat (2) is arranged along the length direction of the base (1); The seat (2) comprises a backrest (21) and a seat cushion (22), the backrest (21) and the seat cushion are hinged, a locking mechanism is provided between the backrest (21) and the seat cushion, and the locking mechanism is used to limit the rotation of the backrest (21); The seat (2) is also slidably connected to an extension plate (13), the extension plate (13) being slidably connected to the seat (2), the extension plate (13) being arranged on the lower side of the seat cushion (22), the extension plate (13) being arranged along the length direction of the seat (2) and sliding along the width direction of the seat (2).

2. The folding sofa for a motorhome according to claim 1, characterized in that: A sliding frame (12) is provided at the bottom of the seat cushion (22), the sliding frame (12) is slidably connected to the slide rail (11), the extension plate (13) is slidably connected to the sliding frame (12), and both ends of the sliding frame (12) can be snap-connected with the extension plate (13).

3. The folding sofa for a motorhome according to claim 1, characterized in that: A drawer (14) is also provided on the side wall of the base (1), the drawer (14) is slidably connected to the base (1), a handle (141) is fixedly connected to the drawer (14), and the drawer (14) is used to store items.

4. The folding sofa for a motorhome according to claim 1, characterized in that: The locking mechanism comprises a locking cover (3) and a locking rod (31); a hinged rod (33) is provided at a hinged position between the backrest (21) and the seat cushion; the hinged rod (33) is fixedly connected to the backrest (21); the hinged rod (33) is connected to the seat cushion; the locking cover (3) is sleeved on the end of the hinged rod (33); a locking gear (32) is provided on the end of the hinged rod (33); the middle part of the locking rod (31) is hinged to the locking cover (3); a locking rack (311) is provided at one end of the locking rod (31) extending into the locking cover (3); the locking rack (311) can mesh with the locking gear (32); a torsion spring is provided at the hinged position of the locking rod (31); the torsion spring has a tendency to drive the locking rack (311) to move toward the locking gear (32).

5. The folding sofa for a motorhome according to claim 4, characterized in that: An expansion mechanism (4) is also provided next to the seat (2). The expansion mechanism (4) is used for being slidably connected to the RV and can be driven by a motor to extend out of the RV to expand the space. The expansion mechanism (4) is used for abutting against the backrest (21).

6. The folding sofa for a motorhome according to claim 5, characterized in that: The expansion mechanism (4) is provided with a guide rail (41), the backrest (21) is provided with a guide groove (211), and the same guide groove (211) is also provided in the RV, the guide rail (41) is used for sliding connection with the guide groove (211), the guide rail (41) of the backrest (21) penetrates the backrest (21), and an adsorption member (212) is also provided on the side wall of the backrest (21), the adsorption member (212) is used for being adsorbed by an electromagnet on the inner wall of the RV, and when the adsorption member (212) is adsorbed, the guide groove (211) is aligned with the guide rail (41).

7. The folding sofa for a motorhome according to claim 6, characterized in that: The guide rail (41) is arranged in an I-shape, and the guide groove (211) is also arranged corresponding to the shape of the guide rail (41). When the guide rail (41) is embedded in the guide groove (211), it is restricted in the guide groove (211).

8. The folding sofa for a motorhome according to claim 7, characterized in that: A plurality of guide wheels (411) are arranged on the guide rail (41), and a wheel groove (213) is provided at the guide groove (211) corresponding to the guide wheel (411), the guide wheel (411) can abut against the groove wall of the wheel groove (213), and the wheel groove (213) is connected to the guide groove (211).

9. The folding sofa for a motorhome according to claim 8, characterized in that: The guide groove (211) is also provided with a mounting groove (214), the mounting groove (214) being in communication with the guide groove (211), an airbag (215) being arranged in the mounting groove (214), the airbag (215) being used to be inflated to abut against the guide rail (41), and an airbag (215) being also arranged in the wheel groove (213), the airbag (215) being used to abut against the guide wheel (411).

10. An application method of a folding sofa for a motorhome, characterized in that: The folding sofa for RVs according to claims 1 to 9 is provided by the following steps: a. Release the gas in the airbag (215), extend the expansion mechanism (4) out of the RV, and wait for the guide rail (41) to move out of the backrest (21); b. Release the locking mechanism to adjust the backrest (21) and pull the seat cushion (22); c. Pull out the extension board (13) to complete the unfolding of the sofa; d. Open the locking mechanism to adjust the backrest (21) and pull back the seat cushion (22); e. Align the guide groove (211) with the guide rail (41); f. Retract the expansion mechanism (4), and after it is completely retracted, inflate the airbag (215) to complete the folding of the sofa.

Images