Patent Application
20240172876
The present disclosure relates to the technical field of sofa supports and, particularly, a contractible sofa linkage device, a sofa support, and a sofa.
Functional sofas and chairs are becoming increasingly common in life as people's standard of living improves. Functional seats may include loungers, chairs, sofas, combination seats, cinema seats and seating units with mobile seating parts. Functional seats with a retractable mechanism allow adjustment among seating, extending and lying positions by means of the retractable mechanism.
Existing sofas suffer from the following deficiencies: When a seat type is designed with high support legs and low seat height, the movement of the leg assembly is prone to rubbing against the floor, affecting the user's utilization. It's difficult to clean the narrow space at a bottom of the seat frame. In a retracted seating position, the footrests of the leg assembly are retracted in front of the seat, resulting in thick and heavy upholstery in front of the seat, poor aesthetics. It is therefore necessary to provide a contractible sofa linkage device and a sofa based on the prior art, so that the overall thickness thereof is thinner after contraction, providing more space below the seat frame.
To solve the problem mentioned above, provided in the present disclosure is a contractible sofa linkage device, including a linkage assembly, a seat frame mount hinged to a top of the linkage assembly, and a leg assembly hinged to a front end of a seat frame mount.
An inner side wall of the seat frame mount is provided with a mounting platform, in which a height of the mounting platform is lower than an upper edge of the seat frame mount, and an oblique plane where the mounting platform is positioned is a seat frame mounting surface.
The leg assembly includes a footrest link assembly and a footrest member, in which the footrest link assembly is hinged to the seat frame mount, the footrest member includes a footrest plate mounting surface used to mount a footrest plate, and the footrest plate mounting surface is retracted below the seat frame mount when the footrest link assembly drives the footrest member to be retracted to a limit position.
Further, the footrest link assembly includes a footrest driving link, a footrest driven link, a first footrest link, and a second footrest link.
The footrest driving link and the footrest driven link are hinged to a front end of the seat frame mount respectively, an end of the first footrest link is hinged to the footrest driving link, an opposite end of the first footrest link is hinged to an end of the footrest member, an end of the second footrest link is hinged to the footrest driven link, and an opposite end of the second footrest link is hinged to a middle of the footrest member.
Further, a vertical distance from a connecting point between the first footrest link and the footrest member to the footrest plate mounting surface is greater than a vertical distance from a connecting point between the second footrest link and the footrest member to the footrest plate mounting surface.
Further, an included angle α between the footrest plate mounting surface and a horizontal plane is 20°-26° when the leg assembly is retracted to a limit position.
Further, a distance H2 between a highest point where the seat frame mount is positioned on the seat frame mounting surface and a highest point of the footrest plate mounting surface in a vertical direction is not greater than 50 mm when the leg assembly is retracted to a limit position.
Preferably, the footrest plate mounting surface is perpendicular to a horizontal plane and a distance H3 between a highest point where the seat frame mount is positioned on the seat frame mounting surface and a lowest point of the footrest member in a vertical direction is not greater than 95 mm when the leg assembly is retracted to a limit position.
Further, the linkage assembly includes a linkage restricting member, a mounting lateral plate, a backrest connecting member, and a leg driven member.
An end of the linkage restricting member is hinged to a middle of the seat frame mount, an opposite end of the linkage restricting member is hinged to an end of the mounting lateral plate, an opposite end of the mounting lateral plate is connected to the backrest connecting member, an end of the leg driven member is hinged to the mounting lateral plate, and an opposite end of the leg driven member is connected to the leg assembly.
Further, the linkage restricting member includes a first connecting end connected to the mounting lateral plate and a second connecting end connected to an outer side wall of the seat frame mount, and an opening direction of an included angle formed by connecting the first connecting end and the second connecting end is facing the seat frame mount.
Further, a connecting point between the leg driven member and the mounting lateral plate is positioned in an opening direction of an included angle formed by connecting the first connecting end and the second connecting end.
Preferably, the mounting lateral plate and the backrest connecting member are fixedly connected or integrally formed.
Provided in the present disclosure is further a sofa support, including a linkage assembly, a seat frame mount, a leg assembly, and a backrest member, in which the seat frame mount is hinged to a top of the linkage assembly, the leg assembly is hinged to a front end of the seat frame mount, and the backrest member is hinged to an end of the seat frame mount distal to the leg assembly.
An inner side wall of the seat frame mount is provided with a mounting platform, in which a height of the mounting platform is lower than an upper edge of the seat frame mount, and a plane where the mounting platform is positioned is a seat frame mounting surface; the leg assembly includes a footrest link assembly and a footrest member, in which the footrest link assembly is hinged to the seat frame mount, the footrest member includes a footrest plate mounting surface used to mount a footrest plate, and the footrest plate mounting surface is retracted below the seat frame mount when the footrest link assembly drives the footrest member to be retracted to a limit position.
A distance H1 between a highest point where the seat frame mount is positioned on the seat frame mounting surface and a lowest point of the leg assembly in a vertical direction is not greater than 170 mm when the sofa support is retracted to a limit position.
Further, the linkage assembly includes a linkage restricting member, a mounting lateral plate, a backrest connecting member, and a leg driven member.
An end of the linkage restricting member is hinged to a middle of the seat frame mount, an opposite end of the linkage restricting member is hinged to an end of the mounting lateral plate, an opposite end of the mounting lateral plate is connected to the backrest connecting member, an end of the leg driven member is hinged to the mounting lateral plate, an opposite end of the leg driven member is connected to the leg assembly, and the backrest connecting member is hinged to a middle of the backrest member.
Further, a difference in height H between the footrest plate mounting surface and a highest point of the backrest member is not less than 80 mm when the leg assembly is extended to a limit position.
Further, the mounting platform is a bent part formed by bending inward a lower edge of the seat frame mount.
Provided in the present disclosure is further a sofa, including a seat support leg, an armrest frame, and the sofa support mentioned above.
There are two sets of sofa supports disposed oppositely, the sofa support is connected to the armrest frame, the seat support leg is provided below the armrest frame, and a height of the seat support leg is 120-150 mm.
Further, a footrest plate, and the footrest plate is fixedly connected to the footrest plate mounting surface; when the footrest plate is retracted to a limit position and the footrest plate mounting surface is oblique with respect to a horizontal plane, a length L of a footrest surface of the footrest plate of a leg assembly is not less than 200 mm.
In order to illustrate the technical solutions of the present disclosure more clearly, the following drawings are briefly introduced as required in the context of the embodiments or the prior art. Obviously, the following drawings illustrate only some of the embodiments of the present disclosure. Other relevant drawings may be obtained on the basis of these drawings without any creative effort by those skilled in the art.
Labels: 10 sofa support; 1 linkage assembly; 11 linkage restricting member; 111 first connecting end; 112 second connecting end; 12 mounting lateral plate; 13 backrest connecting member; 14 leg driven member; 15 elastic restoration member; 2 seat frame mount; 21 mounting platform; 211 seat frame mounting surface; 3 leg assembly; 31 footrest link assembly; 311 footrest driving link; 312 footrest driven link; 313 first footrest link; 314 second footrest link; 315 extension footrest; 316 footrest connecting member; 317 restricting member; 32 footrest member; 321 footrest plate mounting surface; 4 backrest member; 5 seat support leg; 6 armrest frame; 7 footrest plate.
The technical solutions in the examples of the present disclosure are clearly and completely described and discussed below in conjunction with the attached drawings of the embodiments of the present disclosure. Obviously, the examples described herein are only some of the examples of the present disclosure but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present disclosure.
References herein to “an embodiment” or “embodiments” refer to particular features, structures or characteristics that may be included in at least one embodiment of the present disclosure. In the description of the present disclosure, it is to be understood that the terms “up”, “down”, “front”, “back”, and other orientation or position relationships are based on the orientation or position relationships shown in the attached drawings. It is only intended to facilitate description of the present disclosure and simplify description, but not to indicate or imply that the referred device or element has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as a limitation of the present disclosure. Furthermore, the related terms “first”, and “second” are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated. As a result, a feature defined as “first” or “second” may expressly or implicitly include one or more such features. The terms “first”, “second” and the like are used to identify different objects and are not intended to describe a particular sequence or order. It should be understood that the data herein used may be interchangeable in appropriate cases so that the embodiment of the present disclosure described herein may be implemented in an order other than what is illustrated or described herein.
In the present disclosure, unless otherwise explicitly specified and limited, the term “mount”, “connect” and the like should be understood in a broad sense, for example, as a fixed connection, as a detachable connection, as an integral connection, as a mechanical connection, as an electrical connection, as a direct connection, as an indirect connection through an intermediate medium, or as a connection within two elements. For those skilled in the art, the specific meaning of the above terms in the context of the present invention may be understood according to the specific situation.
In the present embodiment, the “inner” side is between the two facing sofa supports, and the “outer” side is in an opposite direction thereof. The extension direction of the leg assembly is “forward” and an opposite direction thereof is “backward”.
In view of the problems mentioned above of the prior art, an objective of the present disclosure is to provide a contractible sofa linkage device, a sofa support, and a seat unit, which allows the structure of the seat frame mount, linkage assembly and leg assembly to be adjusted so that a vertical height of the sofa support is reduced after retraction, a thickness of the sofa support is thinner, and the space at a bottom of the seat frame is increased.
As shown in
In the present embodiment, the leg assembly 3 includes a footrest link assembly 31 and a footrest member 32, wherein the footrest link assembly 31 is hinged to the seat frame mount 2, the footrest member 32 comprises a footrest plate mounting surface 321 used to mount a footrest plate 7, and the footrest plate mounting surface 321 is retracted below the footrest link assembly 31 when the footrest link assembly 31 drives the footrest member 32 to be retracted to a limit position. Specifically, as shown in
Specifically, in the present embodiment, a vertical distance from a connecting point between the first footrest link 313 and the footrest member 32 to the footrest plate mounting surface 321 is greater than a vertical distance from a connecting point between the second footrest link 314 and the footrest member 32 to the footrest plate mounting surface 321, so that the footrest member is oblique with respect to a horizontal plane after retracted. Specifically, an included angle α between the footrest plate mounting surface 321 and a horizontal plane is 20°-26° when the leg assembly 3 is retracted to a limit position. Preferably, α may be 20°, 23°, 25°, or 26°. In the leg assembly 3 of the present embodiment, an included angle α between the footrest plate mounting surface 321 and a horizontal plane is 23° when the leg assembly 3 is retracted to a limit position. As shown in
Specifically, in the present embodiment, a restricting member 317 is further provided on an end of the first footrest link 313 proximal to the footrest member 32, and the second footrest link 314 is provided with a first restricting surface 241 cooperated with the restricting member 317; a current position of the leg assembly 3 is a limit position that the leg assembly 3 is extended to, when the first restricting surface 241 is abutted against the restricting member 317. A lower edge of the footrest member 32 is provided with a second restricting surface 252 cooperated with the restricting member 317, and a current position of the leg assembly 3 is a limit position that the leg assembly 3 is retracted to, when the second restricting surface 252 is abutted against the restricting member 317. In the present embodiment, the restricting member 317 is cooperated with and abutted against the first restricting surface or the second restricting surface, which plays a role in restricting positions and preventing the footrest member 32 from loosening. On the one hand, it may restrict positions to prevent the leg assembly 3 from not retracting or unfolding smoothly due to excessive extension or retraction; on the other hand, it may prevent the footrest member 32 and the footrest plate from easily loosening as they do not retract to a predetermined limit position. Specifically, the linkage assembly 1 includes a linkage restricting member 11, a mounting lateral plate 12, a backrest connecting member 13, and a leg driven member 14. An end of the linkage restricting member 11 is hinged to a middle of the seat frame mount 2, an opposite end of the linkage restricting member 11 is hinged to an end of the mounting lateral plate 12, an opposite end of the mounting lateral plate 12 is connected to the backrest connecting member 13, an end of the leg driven member 14 is hinged to the mounting lateral plate 12, and an opposite end of the leg driven member 14 is connected to the leg assembly 3. The mounting lateral plate 12 is fixedly connected to the backrest connecting member 13 by means of fasteners or is integrally formed with the backrest connecting member 13. In the present embodiment, the linkage assembly is connected to the leg assembly 3 by means of the leg driven member 14, the linkage assembly 1 is connected to the armrest frame 6 by means of the mounting lateral plate 12, and the seat frame mount 2 is rotatably connected to the linkage assembly 1. As the leg assembly is extended, the seat frame mount and linkage assembly are subsequently driven to move and the seat frame mount is moved obliquely upward and forward.
Specifically, as shown in
Specifically, as shown in
Specifically, a vertical distance H1 between a highest point where the seat frame mount 2 is positioned on the seat frame mounting surface 20 and a lowest point of the leg assembly 3 is not greater than 170 mm when the sofa support is retracted to a limit position. Preferably, the vertical distance H1 may be 170 mm, 160 mm, 155 mm, or 150 mm. The less the vertical distance H1 is, the thinner the sofa support is compressed after retraction and the less space it takes up in a vertical direction. An overall structure of both the seat frame mount 2 and the leg assembly 3 of the linkage device is compressed, which minimizes the amount of space taken up in a vertical direction, which improves the space utilization, which results in an increase of space in a lower part of the seat frame after the sofa is fully assembled, which facilitates cleaning by cleaning devices, such as mops, sweepers, and so on.
Specifically, a difference in height H between the footrest plate mounting surface 321 and a highest point of the backrest member 4 is not less than 80 mm when the leg assembly 3 is extended to a limit position. Preferably, the difference in height H may be 80 mm, 90 mm, 150 mm, or 200 mm. Compared to a conventional structure, in the present embodiment, the structures of the leg driven member 14 and the linkage restricting member 11 of the linkage assembly allows an increase of an extension height of the seat leg assembly 3. An inclination angle of the seat frame mount 2 is increased driven by the leg assembly 3, increasing the comfort of the seat when the sofa support is unfolded.
As shown in
In the present embodiment, the two sofa supports 10 of the sofa are provided mirrored and spaced apart and are fixed to the armrest frame 6 by means of a mounting lateral plate 12 and fasteners. The seat frame is lowered and mounted on a mounting platform 21, and a height of the mounting platform 21 is lower than an upper edge of the seat frame mount 2.
Specifically, the sofa further includes a footrest plate 7, and the footrest plate 7 is fixedly connected to the footrest plate mounting surface 321 by means of fasteners; when the footrest plate 7 is retracted to a limit position and the footrest plate mounting surface 321 is oblique with respect to a horizontal plane, a length L of a footrest surface of the footrest plate 7 of a leg assembly 3 is not less than 200 mm. Preferably, on the basis that the footrest plate 7 has no interference with the ground during retraction of the leg assembly 3, the length L of the footrest plate 7 may be 200 mm, 250 mm, 260 mm or 280 mm. An increase of a length of the footrest plate allows a better support strength of the sofa for user's legs and feet, which improves the comfort of the sofa. Specifically, in the present embodiment, the sofa further includes a driving mechanism, which may be a manual driving mechanism or an electric driving mechanism. Under the drive of the driving mechanism, when the leg driven member 14 is a rod-like connecting member, the sofa may achieve two positions, i.e., a sitting position and a lying position. When the leg driven member 14 is an elastic connecting member, the sofa may achieve three positions, i.e., a sitting position, an extending position, and a lying position. In the sitting position, both the leg assembly 3 and the backrest member 4 are retracted to a limit position. In the extending position, the leg assembly 3 is extended forward to a limit position, and the backrest member is kept the same as that in the sitting position. In the lying position, both the leg assembly 3 and the backrest member 4 are extended to a limit position.
In the present disclosure, a height of the seat frame mount is reduced, the leg assembly is simple and compact in structure, and the size of the footrest member is reduced, resulting in a thinner thickness of a front end of the sofa seat, and a more streamlined look of the sofa seat. By combining structures of the seat frame mount, the linkage assembly, and the leg assembly, the dimensions of the sofa support are compressed in a vertical direction after retraction, minimizing the space taken up after retraction, achieving the lowering the seat height and increasing the space at a bottom of the seat frame simultaneously, and may be applied to seat types with a low seat height and high support legs.
As shown in
Specifically, in the present embodiment, an end of the extension footrest 315 is hinged to the footrest member 32, and a middle of the extension footrest 315 is connected to the second footrest link 314 by means of the footrest connecting member 316. The extension footrest 315 allows for longer extension of the leg assembly and better support for legs and feet, which further improves the comfort of the sofa.
In view of the technical solutions mentioned above, the present disclosure has beneficial effects as follows.
In the present disclosure, a height of the seat frame mount is reduced, the leg assembly is simple and compact in structure, and the size of the footrest member is reduced, resulting in a thinner thickness of a front end of the sofa seat, and a more streamlined look of the sofa seat.
In the present disclosure, by combining structures of the seat frame mount, the linkage assembly, and the leg assembly, the dimensions of the sofa support are compressed in a vertical direction after retraction, minimizing the space taken up after retraction, achieving the lowering of the seat height and increasing the space at a bottom of the seat frame simultaneously, and may be applied to seat types with a low seat height and high legs.
The foregoing description has sufficiently disclosed specific embodiments of the present disclosure. It should be noted that any changes made to specific embodiments of the present disclosure by those skilled in the art do not depart from the scope of the claims of the present disclosure. Accordingly, the scope of the claims of the present disclosure is not limited to the foregoing specific embodiments.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110948461.1 | Aug 2021 | CN | national |
| 202110948484.2 | Aug 2021 | CN | national |
| 202121945027.X | Aug 2021 | CN | national |
The present application is a Continuation Application of PCT Application No. PCT/CN2022/080373 filed on Mar. 11, 2022, which claims priority of Chinese Patent Applications No. 202110948484.2 filed on Aug. 18, 2021, No. 202121945027.X filed on Aug. 18, 2021, and No. 202110948461.1 filed on Aug. 18, 2021 before CNIPA. All the above are hereby incorporated by reference in their entirety as part of the present disclosure.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN22/80373 | Mar 2022 | WO |
| Child | 18434819 | US |
