Telescopic electric sofa

Abstract

The utility model discloses a telescopic electric sofa in the field of sofas, which comprises a base component, a backrest component, a waist support component and a leg support component, the backrest component is hinged with the leg support component, a first driving part is arranged on the base component, the driving end of the first driving part is hinged with the leg support component, a second driving part is arranged on the backrest component, and the waist support component is hinged with the leg support component. The driving end of the second driving piece is hinged to the waist jacking assembly. The electric sofa solves the problems that when an existing electric sofa is used, the waist is lack of enough bearing, the overall comfortable experience is weakened, and unnecessary pressure and burden are exerted on the waist, the waist jacking assembly can directly act on the waist of a user, accurate and necessary supporting force is provided for the waist, and therefore the waist of the user can be conveniently supported. The waist discomfort or fatigue feeling caused by long-time sitting posture is effectively relieved, and a user can flexibly adjust the position of the waist supporting assembly according to personal preference and comfort requirements, so that the most appropriate supporting effect of the waist is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a telescopic electric sofa. Background Art

[0002] An electric sofa is an electric sofa that can automatically lie down. The surface is generally covered with leather and the middle is filled with sponge. The main structure is supported by a retractable reclining iron frame. It is fashionable and beautiful, and is widely used in homes, companies and other places.

[0003] Electric sofas achieve intelligent adjustment of backrest inclination and footrest extension length through driving components and transmission devices, which greatly facilitates the personalized needs of users and improves the convenience and enjoyment of use. However, when using existing electric sofas, the waist often lacks sufficient support, resulting in this area hanging in the air. Over time, it not only weakens the overall comfort experience, but also may put unnecessary pressure and burden on the waist, induce discomfort and fatigue symptoms, and thus pose a potential threat to the health of users.

[0004] The above defects need to be solved urgently. Utility Model Content

[0005] In order to solve the problem that the existing electric sofa lacks sufficient support for the waist when in use, which weakens the overall comfort experience and puts unnecessary pressure and burden on the waist, the utility model provides a telescopic electric sofa.

[0006] The technical solution of the utility model is as follows:

[0007] A telescopic electric sofa comprises a base assembly, a backrest assembly, a waist assembly and a leg assembly, wherein the backrest assembly is hinged to the leg assembly, a first driving member is arranged on the base assembly, a driving end of the first driving member is hinged to the leg assembly, a second driving member is arranged on the backrest assembly, a driving end of the second driving member is hinged to the waist assembly.

[0008] According to the above scheme of the utility model, the top waist component includes a mounting rod and a transverse connecting member, the mounting rod is arranged on the backrest component, the transverse connecting member is arranged on the mounting rod, one end of the transverse connecting member is hinged to the top waist component, the other end of the transverse connecting member is connected to the second driving member, and one side of the top waist component is hinged to the driving end of the second driving member.

[0009] According to the above scheme of the utility model, the top waist component includes a vertical connecting member and a top waist piece, one end of the vertical connecting member is hinged to the horizontal connecting member, the other end of the vertical connecting member is hinged to the driving end of the second driving member, and the top waist piece is arranged on the side of the vertical connecting member away from the second driving member.

[0010] According to the above-mentioned solution of the utility model, a clamping groove is arranged on the top waist piece, and a clamping protrusion is arranged on the vertical connecting member, and the clamping protrusion is fixedly connected with the clamping groove.

[0011] According to the above-mentioned solution of the utility model, the top waist piece is recessed toward a side away from the vertical connecting member, so that the surface of the top waist piece is arc-shaped.

[0012] According to the above-mentioned solution of the utility model, both ends of the mounting rod are connected to the backrest assembly through a connecting piece, a through hole is provided on the connecting piece, and the end of the mounting rod is arranged in the through hole.

[0013] According to the utility model of the above scheme, the backrest assembly includes a backrest mounting frame, backrest connecting rods are arranged on both sides of the backrest mounting frame, one end of the backrest connecting rod away from the backrest mounting frame is hinged to the frame leg assembly through a linkage rod, and the backrest connecting rod is hinged to the base assembly, and the top waist assembly is arranged on the backrest mounting frame.

[0014] According to the utility model of the above scheme, the leg frame assembly includes a leg frame cross bar, the leg frame cross bar is hinged to the driving end of the first driving member, and leg frame rod groups are arranged on both sides of the leg frame cross bar, and the linkage rod is hinged to the leg frame rod group.

[0015] According to the above scheme of the utility model, the leg rod group includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a first leg component, and a second leg component. The first connecting rod is connected to the base assembly, the second connecting rod is connected to the leg cross rod, one end of the second connecting rod and one end of the third connecting rod are both hinged to the first connecting rod, the other end of the second connecting rod is hinged to one end of the fourth connecting rod, the other end of the third connecting rod is hinged to one end of the fifth connecting rod, and the second connecting rod is hinged to the fifth connecting rod, the linkage rod is hinged to the third connecting rod, the other ends of the fourth connecting rod and the fifth connecting rod are both hinged to the first leg component, the other end of the fourth connecting rod is hinged to the second leg component, and the second leg component is hinged to the first leg component through the sixth connecting rod.

[0016] According to the above scheme of the utility model, the base assembly includes a base frame, a rotating shaft, a support frame, and a cushion mounting frame, one end of the rotating shaft is connected to the middle part of the base frame, the other end of the rotating shaft is rotatably connected to the middle part of the support frame, and the cushion mounting frame is arranged on the top of the support frame.

[0017] The utility model according to the above scheme has the following beneficial effects:

[0018] In the above telescopic electric sofa, a second driving member is provided on the backrest assembly of the backrest connecting rod, and the driving end of the second driving member of the backrest connecting rod is hinged with the backrest connecting rod waist assembly, and the waist assembly can directly act on the user's waist, providing accurate and necessary support force for the waist, and effectively reducing the waist discomfort or fatigue caused by long-term sitting. At the same time, the position of the waist assembly is adjusted by the driving of the second driving member, so that the user can flexibly adjust the position of the waist assembly according to personal preferences and comfort requirements, thereby ensuring that the waist obtains the most suitable support effect, which not only meets the diverse needs of different users, but also prevents the occurrence of waist fatigue and discomfort. In addition, the backrest assembly is hinged with the leg assembly, and the base assembly is provided with a first driving member, and the driving end of the first driving member is hinged with the leg assembly, so that the backrest assembly and the leg assembly can be driven synchronously. Compared with the independent control of the backrest assembly and the leg assembly, it not only simplifies the operation process, but also reduces the production cost and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a disassembled diagram of the utility model;

[0021] Figure 3 for Figure 2 A magnified view of part A;

[0022] Figure 4 This is a disassembled diagram of the base assembly;

[0023] Figure 5 It is a structural schematic diagram of the top waist component;

[0024] Figure 6 This is a disassembled diagram of the top waist component;

[0025] Figure 7 It is a structural schematic diagram of the leg assembly.

[0026] In the figure, 1, base assembly; 11, bottom frame; 12, rotating shaft; 13, supporting frame; 131, supporting cross bar; 132, supporting diagonal bar; 14, cushion mounting frame; 15, sofa cushion;

[0027] 2. Backrest assembly; 21. Backrest mounting frame; 22. Backrest mounting crossbar; 23. Backrest connecting rod; 24. Linkage rod; 25. Backrest pad;

[0028] 3. Top waist assembly; 31. Mounting rod; 32. Horizontal connecting piece; 33. Top waist component; 331. Vertical connecting piece; 3311. Card convex; 332. Top waist piece; 3321. Card slot; 34. Connecting piece;

[0029] 4. Leg assembly; 41. Leg crossbar; 42. Leg rod group; 421. First connecting rod; 422. Second connecting rod; 423. Third connecting rod; 424. Fourth connecting rod; 425. Fifth connecting rod; 426. First leg component; 427. Second leg component; 428. Sixth connecting rod;

[0030] 5. A first driving member; 6. A second driving member. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] like Figure 1 , Figure 2 As shown, the utility model provides a telescopic electric sofa, including a base assembly 1, a backrest assembly 2, a waist support assembly 3, and a leg assembly 4. The backrest assembly 2 is hinged with the leg assembly 4. A first driving member 5 is arranged on the base assembly 1. The driving end of the first driving member 5 is hinged with the leg assembly 4, so that the backrest assembly 2 and the leg assembly 4 can be driven synchronously. Compared with the independent control of the backrest assembly 2 and the leg assembly 4, it not only simplifies the operation process, but also reduces the production cost and improves the production efficiency. In addition, a second driving member 6 is arranged on the backrest assembly 2. The driving end of the second driving member 6 is hinged with the waist support assembly 3. The waist support assembly 3 can directly act on the user's waist, provide accurate and necessary support force for the waist, and effectively reduce the waist discomfort or fatigue caused by long-term sitting. At the same time, the position of the waist support assembly 3 is adjusted by the driving of the second driving member 6, so that the user can flexibly adjust the position of the waist support assembly 3 according to personal preferences and comfort requirements, thereby ensuring that the waist obtains the most suitable support effect, which not only meets the diverse needs of different users, but also prevents the occurrence of waist fatigue and discomfort.

[0033] like Figures 2 to 4As shown, in this embodiment, the base assembly 1 includes a base frame 11, a rotating shaft 12, a support frame 13, and a cushion mounting frame 14. The base frame 11 is used to contact the ground, thereby playing an integral supporting role for the electric sofa. One end of the rotating shaft 12 is connected to the middle of the base frame 11, and the other end of the rotating shaft 12 is rotatably connected to the middle of the support frame 13, so that the support frame 13 can rotate freely within a certain range, thereby meeting the user's need to adjust the direction of the sofa as needed. The support frame 13 includes a supporting crossbar 131 and two supporting diagonal bars 132 symmetrically arranged at both ends of the supporting crossbar 131. Compared with the existing electric sofa with two supporting crossbars 131, the utility model can simplify the process and save assembly procedures. Secondly, the cushion mounting frame 14 is arranged on the top of the support frame 13, the cushion mounting frame 14 is hinged with the backrest assembly 2, and the sofa cushion 15 is installed on the top of the cushion mounting frame 14. The sofa cushion 15 can be designed as a sponge material to improve the comfort of use. Of course, in actual design, the material of the sofa cushion 15 can be designed according to needs. In addition, the first driving member 5 is arranged at the bottom of the seat cushion mounting frame 14, which can improve space utilization.

[0034] like Figure 2 , Figure 3 As shown, in this embodiment, the backrest assembly 2 includes a backrest mounting frame 21 and a plurality of backrest mounting cross bars 22, which play a role in strengthening the backrest structure and facilitate the installation of the backrest pad 25 on the backrest assembly 2. In addition, the backrest pad 25 can be designed to be a sponge material to improve the comfort of use. Of course, in actual design, the material of the backrest pad 25 can be designed as needed. In addition, backrest connecting rods 23 are provided on both sides of the backrest mounting frame 21, and the end of the backrest connecting rod 23 away from the backrest mounting frame 21 is hinged to the frame leg assembly 4 through a linkage rod 24, and the backrest connecting rod 23 is hinged to the seat cushion mounting frame 14, and the top waist assembly 3 is arranged on the backrest mounting frame 21. When the backrest assembly 2 is adjusted, the driving end of the first driving member 5 moves linearly. Since the backrest connecting rod 23 is hinged to the leg assembly 4 through the linkage rod 24, the backrest connecting rod 23 drives the backrest mounting frame 21 to rotate around the cushion mounting frame 14, thereby driving the entire backrest assembly 2 to slowly rotate around the base assembly 1 to the angle required by the user.

[0035] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, in this embodiment, the waist support assembly 3 includes a mounting rod 31, a transverse connecting member 32, and a waist support component 33. The mounting rod 31 is transversely arranged on the two backrest connecting rods 23, ensuring a stable support and facilitating the subsequent installation and adjustment of components. The transverse connecting member 32 is arranged on the mounting rod 31, and one end of the transverse connecting member 32 is hinged to the waist support component 33, so that the waist support component 33 can be flexibly rotated within a certain range to adapt to the natural curve of the user's waist. The other end of the transverse connecting member 32 is connected to the second driving member 6, and one side of the waist support component 33 is hinged to the driving end of the second driving member 6, so as to convert the power of the third driving member into the adjustment action of the waist support component 33. Specifically, the waist-top component 33 includes a vertical connection member 331 and a waist-top piece 332. One end of the vertical connection member 331 is hinged to the transverse connection member 32, and the other end of the vertical connection member 331 is hinged to the driving end of the second driving member 6, so that the waist-top component 33 can be driven by the second driving assembly to rotate the vertical connection member 331 around the hinge point between the vertical connection member 331 and the transverse connection member 32, thereby adjusting the waist-top component 33 to meet the waist support requirements of users in different sitting postures. In addition, the waist-top piece 332 is arranged on the side of the vertical connection member 331 away from the second driving member 6, and the waist-top piece 332 is arranged close to the user's waist to support the lower waist of the user's waist.

[0036] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in this embodiment, the top waist piece 332 is recessed toward the side away from the vertical connecting piece 331, so that the surface of the top waist piece 332 is arc-shaped. The top waist piece 332 conforms to the principle of ergonomics, so that the top waist piece 332 can fit the waist contour of the user closely. When the user sits down or lies down, the arc-shaped surface of the top waist piece 332 can perfectly wrap the waist, effectively dispersing the pressure from the spine and surrounding muscles, thereby reducing waist fatigue and discomfort. In addition, in order to further enhance its support effect and comfort, the top waist piece 332 is made of highly elastic and highly breathable materials, such as memory foam, latex, etc. These materials not only have good resilience, can automatically adjust their shape according to the user's body shape and sitting posture, and provide personalized support; they also have excellent breathability, can keep the waist area dry and comfortable, and avoid the discomfort of stuffiness or humidity after long-term use.

[0037] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, in this embodiment, a slot 3321 is provided on the top waist piece 332, and a protrusion 3311 is provided on the vertical connecting member 331. The protrusion 3311 is fixedly connected to the slot 3321, which ensures the tight connection between the top waist piece 332 and the vertical connecting member 331, prevents loosening or displacement during use, simplifies the installation and disassembly process, and facilitates maintenance and replacement. In addition, there are two vertical connecting members 331, and the two vertical connecting members 331 are symmetrically arranged on both sides of the third driving assembly, which ensures the structural balance and stability of the top waist assembly 3. The two vertical connecting members 331 are respectively supported on the left and right sides of the third driving assembly, forming a stable triangular support structure, which effectively improves the load-bearing capacity and anti-overturning performance of the entire top waist assembly 3. Secondly, the symmetrical layout also helps to achieve uniform force on the top waist component 33. When the user sits down and leans on the waist-top component 33, the two vertical connectors 331 can evenly share the pressure from the waist, avoiding the risk of damage to a single connection point due to excessive force. At the same time, this even force also makes the adjustment of the waist-top component 33 smoother and more stable, further improving the user's experience.

[0038] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in this embodiment, both ends of the mounting rod 31 are connected to the backrest assembly 2 through a connecting piece 34, and connecting holes are provided on the connecting piece 34 and the backrest vertical rod, and bolts pass through the holes and cooperate with nuts. In addition, a through hole is provided on the connecting piece 34, and the end of the mounting rod 31 is provided in the through hole. When the mounting rod 31 is subjected to external force, its end will apply a direct and uniformly distributed force to the connecting piece 34 through the through hole, which not only effectively disperses the stress concentration of the mounting rod 31 on the connecting piece 34, but also significantly improves the torque transmission efficiency between the two. Even in the case of long-term use or large external force impact, the connection between the mounting rod 31 and the connecting piece 34 can still remain stable and reliable, providing a strong guarantee for the overall stability and safety of the seat. In addition, the shape of the mounting rod 31 is a rectangular parallelepiped, and the cross-sectional shape of the through hole is a square. Of course, in actual design, the shape of the mounting rod 31 and the cross-sectional shape of the through hole can be designed according to actual needs.

[0039] like Figure 2 , Figure 3 , Figure 7As shown, in the present embodiment, the leg assembly 4 comprises a leg cross bar 41, which is hinged to the driving end of the first driving member 5, and a leg rod group 42 is provided on both sides of the leg cross bar 41, and the linkage rod 24 is hinged to the leg rod group 42. Through the precise control of the first driving member 5, the leg cross bar 41 can drive the entire leg assembly 4 to perform telescopic movement, so as to adapt to the leg lengths and needs of different users. At the same time, the backrest connecting rod 23 is hinged to the leg rod group 42 through the linkage rod 24, so that the backrest connecting rod 23 drives the backrest mounting frame 21 to rotate around the seat cushion mounting frame 14 to the angle required by the user.

[0040] like Figure 2 , Figure 3 , Figure 7 As shown, in this embodiment, the leg rod group 42 includes a first link 421, a second link 422, a third link 423, a fourth link 424, a fifth link 425, a first leg component 426, and a second leg component 427. The first link 421 is connected to the base assembly 1, the second link 422 is connected to the leg cross bar 41, one end of the second link 422 and one end of the third link 423 are both hinged to the first link 421, and the other end of the second link 422 is hinged to the fourth link One end of the rod 424 is hinged, the other end of the third link 423 is hinged to one end of the fifth link 425, and the second link 422 is hinged to the fifth link 425, the linkage rod 24 is hinged to the third link 423, the other ends of the fourth link 424 and the fifth link 425 are hinged to the first leg component 426, the other end of the fourth link 424 is hinged to the second leg component 427, and the second leg component 427 is hinged to the first leg component 426 through the sixth link 428. In addition, the leg pad is installed on the first leg part 426 and the second leg part 427. When the position of the leg assembly 4 is adjusted, the driving end of the first driving member 5 moves linearly, and drives the second link 422 to rotate around the hinge point between it and the first link 421 and the third link 423 to rotate around the hinge point between it and the first link 421 through the leg cross bar 41. At the same time, the second link 422 drives the first leg part 426 to extend and retract through the fourth link 424, and the third link 423 drives the second leg part 427 to extend and retract through the fifth link 425, thereby realizing the extension and retraction of the leg assembly 4. At the same time, when the leg assembly 4 is in the unfolded state, the backrest assembly 2 is approximately horizontal with the cushion mounting frame 14, which improves the comfort of the user when lying down.

[0041] In this embodiment, when the leg assembly 4 is in the unfolded state, the height of the hinge point of the third link 423 and the fifth link 425 is greater than the height of the hinge point of the second link 422 and the fourth link 424, so that when the user lies down, the calf is supported by the combined structure of the third link 423 and the fifth link 425, and the hinge point of the structure is relatively high, so the calf is raised, and the height of the calf is higher than the height of the ankle, which not only conforms to the leg posture of the human body when it is naturally relaxed, but also ensures that a more comfortable angle is formed between the calf and the thigh, effectively reducing the tension of the leg muscles and promoting blood circulation. In addition, the design of the calf being higher than the ankle also helps to relieve the pressure on the lower limbs caused by standing or sitting for a long time, and reduces the occurrence of edema and fatigue. In addition, when the leg assembly 4 is in the unfolded state, the overall unfolded length of the leg assembly 4 is 473 mm. Compared with the existing electric sofa, the unfolded length of the leg assembly 4 is extended, which can be suitable for users of different heights and solve the problem of uncomfortable leg support when the user is too tall.

[0042] In this embodiment, the first driving member 5 and the second driving member 6 are both configured as motors. Of course, in actual design, the structures of the first driving member 5 and the second driving member 6 can be designed according to actual needs.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0044] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A telescopic electric sofa, characterized in that: It includes a base assembly, a backrest assembly, a waist assembly, and a leg assembly. The backrest assembly is hinged to the leg assembly. The base assembly is provided with a first driving member, and the driving end of the first driving member is hinged to the leg assembly. The backrest assembly is provided with a second driving member, and the driving end of the second driving member is hinged to the waist assembly.

2. The telescopic electric sofa according to claim 1, characterized in that: The top waist component includes a mounting rod and a transverse connecting member, wherein the mounting rod is arranged on the backrest component, and the transverse connecting member is arranged on the mounting rod, one end of the transverse connecting member is hinged to the top waist component, and the other end of the transverse connecting member is connected to the second driving member, and one side of the top waist component is hinged to the driving end of the second driving member.

3. The electric sofa according to claim 2, characterized in that: The top waist component includes a vertical connecting member and a top waist piece. One end of the vertical connecting member is hinged to the horizontal connecting member, and the other end of the vertical connecting member is hinged to the driving end of the second driving member. The top waist piece is arranged on a side of the vertical connecting member away from the second driving member.

4. The electric sofa according to claim 3, characterized in that: The top waist piece is provided with a clamping groove, and the vertical connecting piece is provided with a clamping protrusion, and the clamping protrusion is fixedly connected with the clamping groove.

5. The electric sofa according to claim 3, characterized in that: The top waist piece is recessed toward a side away from the vertical connecting piece, so that the surface of the top waist piece is arc-shaped.

6. The electric sofa according to claim 2, characterized in that: Both ends of the mounting rod are connected to the backrest assembly through a connecting piece, a through hole is provided on the connecting piece, and the end of the mounting rod is arranged in the through hole.

7. The electric sofa according to claim 1, characterized in that: The backrest assembly includes a backrest mounting frame, backrest connecting rods are arranged on both sides of the backrest mounting frame, one end of the backrest connecting rod away from the backrest mounting frame is hinged to the frame leg assembly through a linkage rod, and the backrest connecting rod is hinged to the base assembly, and the top waist assembly is arranged on the backrest mounting frame.

8. The electric sofa according to claim 7, characterized in that: The leg frame assembly comprises a leg frame cross bar, the leg frame cross bar is hinged to the driving end of the first driving member, and leg frame rod groups are arranged on both sides of the leg frame cross bar, and the linkage rod is hinged to the leg frame rod group.

9. The electric sofa according to claim 8, characterized in that: The leg rod group includes a first link, a second link, a third link, a fourth link, a fifth link, a first leg component, and a second leg component. The first link is connected to the base assembly, the second link is connected to the leg cross rod, one end of the second link and one end of the third link are both hinged to the first link, the other end of the second link is hinged to one end of the fourth link, the other end of the third link is hinged to one end of the fifth link, and the second link is hinged to the fifth link, the linkage rod is hinged to the third link, the other ends of the fourth link and the fifth link are both hinged to the first leg component, the other end of the fourth link is hinged to the second leg component, and the second leg component is hinged to the first leg component through the sixth link.

10. The electric sofa according to claim 1, characterized in that: The base assembly includes a base frame, a rotating shaft, a support frame, and a cushion mounting frame. One end of the rotating shaft is connected to the middle part of the base frame, and the other end of the rotating shaft is rotatably connected to the middle part of the support frame. The cushion mounting frame is arranged on the top of the support frame.

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