Electric sofa

Abstract

The utility model discloses an electric sofa in the field of sofas, which comprises a base component, a backrest component, a waist propping component and a leg component, a first driving piece and a second driving piece are arranged on the base component, the driving end of the first driving piece is connected with the backrest component, and the driving end of the second driving piece is connected with the leg component. A third driving piece is arranged on the backrest assembly, and the driving end of the third driving piece is connected with the waist jacking assembly. The electric sofa solves the problems that when an existing electric sofa is used, the waist of a user cannot be sufficiently supported, the lower waist position of the user is usually in a suspended state, and the waist is uncomfortable or fatigued, the waist supporting assembly can directly act on the waist of the user, necessary supporting force is provided, and the waist supporting effect is good. And the position of the waist jacking assembly is adjusted through driving of the third driving part, so that the optimal supporting effect of the waist is ensured, the requirements of different users are met, and waist fatigue and discomfort are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to an 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] In order to realize the rotation of the backrest and the footrest for the convenience of lying down, the existing electric sofas are often provided with driving components and transmission devices to adjust the inclination angle of the sofa backrest, as well as the extension length and height of the sofa footrest, which is convenient for users to use the sofa and improves the comfort of use. However, when using the existing electric sofa, the user's waist is not sufficiently supported, and the user's lower waist position is usually in a suspended state. Maintaining this posture for a long time will not only affect the body's comfort, but also may cause unnecessary pressure and burden on the waist, thereby causing waist discomfort or fatigue.

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

[0005] In order to solve the problem that when using the existing electric sofa, the user's waist cannot be sufficiently supported and the user's lower waist is usually in a suspended state, causing waist discomfort or fatigue, the utility model provides an electric sofa.

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

[0007] An electric sofa comprises a base assembly, a backrest assembly, a waist assembly and a leg assembly. The base assembly is provided with a first driving member and a second driving member, the driving end of the first driving member is connected to the backrest assembly, the driving end of the second driving member is connected to the leg assembly, the backrest assembly is provided with a third driving member, and the driving end of the third driving member is connected 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 third driving member, and one side of the top waist component is hinged to the driving end of the third 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 third driving member, and the top waist piece is arranged on the side of the vertical connecting member away from the third 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, there are two vertical connecting members, and the two vertical connecting members are symmetrically arranged on both sides of the third driving member.

[0013] 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.

[0014] According to the above-mentioned scheme of the utility model, the backrest assembly includes a backrest cross bar and two backrest vertical bars, the backrest cross bar is connected to the driving end of the first driving member, the two backrest vertical bars are respectively arranged at the two ends of the backrest cross bar, and the two backrest vertical bars are both hinged to the base assembly, and the top waist assembly is arranged on the backrest vertical bar.

[0015] According to the utility model of the above scheme, the leg assembly includes a leg cross bar, the leg cross bar is hinged to the driving end of the second driving member, and leg rod groups are provided on both sides of the leg cross bar to realize the extension and retraction of the leg assembly.

[0016] 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 part, and a second leg part. 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 other ends of the fourth connecting rod and the fifth connecting rod are both hinged to the first leg part, the other end of the fourth connecting rod is hinged to the second leg part, and the second leg part is hinged to the first leg part through the sixth connecting rod.

[0017] According to the above solution of the utility model, when the leg assembly is in the unfolded state, the height of the hinge point between the third link and the fifth link is greater than the height of the hinge point between the second link and the fourth link.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] In the above electric sofa, a third driving member is provided on the backrest assembly, and the driving end of the third driving member is connected to the waist supporting member, which can directly act on the user's waist to provide necessary support force and reduce waist discomfort or fatigue. At the same time, the position of the waist supporting member is adjusted by driving the third driving member, thereby ensuring that the waist gets the best support effect, meeting the needs of different users, and preventing waist fatigue and discomfort.

[0020] In addition, the driving end of the first driving member is connected to the backrest assembly, and the driving end of the second driving member is connected to the leg assembly, that is, the backrest assembly and the leg assembly are driven separately, thereby improving the flexibility of adjustment to adapt to the different sitting posture requirements of users, so that users can freely adjust the sitting or lying position of the electric sofa according to personal needs and preferences to achieve the most comfortable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a disassembled diagram of the utility model;

[0023] Figure 3 This is a disassembled diagram of the base assembly;

[0024] Figure 4 It is a structural schematic diagram of the top waist component;

[0025] Figure 5 This is a disassembled diagram of the top waist component;

[0026] Figure 6 It is a structural schematic diagram of the leg assembly.

[0027] 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;

[0028] 2. Backrest assembly; 21. Backrest crossbar; 22. Backrest vertical bar; 23. Backrest mounting crossbar; 24. Backrest pad;

[0029] 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;

[0030] 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;

[0031] 5. First driving member; 6. Second driving member; 7. Third driving member. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1 , Figure 2 As shown, the utility model provides an electric sofa, including a base assembly 1, a backrest assembly 2, a waist support assembly 3, and a leg support assembly 4. The base assembly 1 is provided with a first driving member 5 and a second driving member 6. The driving end of the first driving member 5 is connected to the backrest assembly 2, and the driving end of the second driving member 6 is connected to the leg support assembly 4, that is, the backrest assembly 2 and the leg support assembly 4 are driven separately, which improves the flexibility of adjustment to adapt to the different sitting posture requirements of users, so that users can freely adjust the sitting or lying posture of the electric sofa according to personal needs and preferences to achieve the most comfortable state. Users can adjust the backrest inclination angle or leg support height separately according to the current activity or rest state, which improves the flexibility and comfort of the electric sofa. In addition, the backrest assembly 2 is provided with a third driving member 7, and the driving end of the third driving member 7 is connected to the waist support assembly 3. The waist support assembly 3 can directly act on the user's waist to provide necessary support force and reduce waist discomfort or fatigue. At the same time, the position of the top waist component 3 is adjusted by driving the third driving member 7, thereby ensuring that the waist is optimally supported, meeting the needs of different users, and preventing the occurrence of waist fatigue and discomfort.

[0034] like Figure 2 , Figure 3As 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 steps. Secondly, the cushion mounting frame 14 is arranged on the top of the support frame 13, and the sofa cushion 15 is installed on the top of the cushion mounting frame 14. The sofa cushion 15 can be designed to be 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 and the second driving member 6 are both arranged at the bottom of the seat cushion mounting frame 14, which can improve space utilization.

[0035] like Figure 1 , Figure 2 As shown, in this embodiment, the backrest assembly 2 includes a backrest crossbar 21 and two backrest vertical rods 22. The backrest crossbar 21 is connected to the driving end of the first driving member 5 to ensure the accurate transmission of the driving force, so that the user can easily adjust the tilt angle of the backrest to adapt to different sitting posture requirements. The two backrest vertical rods 22 are respectively arranged at the two ends of the backrest crossbar 21, and the two backrest vertical rods 22 are hinged to the cushion mounting frame 14. The top waist assembly 3 is arranged on the backrest vertical rod 22. The stable connection between the backrest vertical rod 22 and the cushion mounting frame 14 further enhances the overall stability of the electric sofa. In addition, the backrest crossbar 21 is arranged on the side of the backrest vertical rod 22 close to the cushion mounting frame 14, and a plurality of backrest mounting crossbars 23 are arranged between the two backrest vertical rods 22, which plays a role in strengthening the backrest structure and facilitates the installation of the backrest pad 24 on the backrest assembly 2. In addition, the backrest pad 24 can be designed as a sponge material to improve the comfort of use. Of course, in actual design, the material of the backrest pad 24 can be designed according to needs. When the backrest assembly 2 is adjusted, the driving end of the first driving member 5 moves linearly, so that the backrest vertical rod 22 rotates around the backrest cross rod 21, thereby driving the entire backrest assembly 2 to slowly rotate around the backrest cross rod 21 to the angle required by the user.

[0036] like Figure 2 , Figure 4 , Figure 5As shown, in this embodiment, the waist-supporting assembly 3 includes a mounting rod 31 and a transverse connecting member 32. The mounting rod 31 is transversely arranged on the two backrest vertical rods 22 to ensure a stable support and facilitate the subsequent installation and adjustment of components. The transverse connecting member 32 is arranged on the mounting rod 31. One end of the transverse connecting member 32 is hinged to the waist-supporting component 33, so that the waist-supporting 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 third driving member 7, and one side of the waist-supporting component 33 is hinged to the driving end of the third driving member 7 to convert the power of the third driving member 7 into the adjustment action of the waist-supporting 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 third driving member 7, so that the waist-top component 33 can be driven by the third driving member 7 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 third driving member 7, and the waist-top piece 332 is arranged close to the user's waist to support the lower waist of the user's waist.

[0037] like Figure 4 , Figure 5 As 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 member 7, which ensures the structural balance and stability of the top waist component 3. The two vertical connecting members 331 are respectively supported on the left and right sides of the third driving member 7, forming a stable triangular support structure, which effectively improves the load-bearing capacity and anti-overturning performance of the entire top waist component 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 4 , Figure 5As 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 22, 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 arranged 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.

[0039] like Figure 4 , Figure 5 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.

[0040] like Figure 2 , Figure 6As shown, in this embodiment, the leg assembly 4 includes a leg cross bar 41, which is hinged to the driving end of the second driving member 6, and a leg rod group 42 is provided on both sides of the leg cross bar 41. Through the precise control of the second driving member 6, the leg cross bar 41 can drive the entire leg assembly 4 to perform telescopic movement, thereby adapting to the leg length and needs of different users. Specifically, 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, the other end of the second link 422 is hinged to one end of the fourth link 424, 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 other ends of the fourth link 424 and the fifth link 425 are both 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 second driving member 6 moves linearly, and drives the second connecting rod 422 to rotate around the hinge point between it and the first connecting rod 421, and the third connecting rod 423 to rotate around the hinge point between it and the first connecting rod 421 through the leg cross bar 41. At the same time, the second connecting rod 422 drives the first leg part 426 to extend and retract through the fourth connecting rod 424, and the third connecting rod 423 drives the second leg part 427 to extend and retract through the fifth connecting rod 425, thereby realizing the extension and retraction of the leg assembly 4.

[0041] like Figure 2 , Figure 6As shown, 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 473mm. 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, the second driving member 6 and the third driving member 7 are all configured as motors. Of course, in actual design, the structures of the first driving member 5, the second driving member 6 and the third driving member 7 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. An electric sofa, characterized in that: It includes a base assembly, a backrest assembly, a waist assembly, and a leg assembly. The base assembly is provided with a first driving member and a second driving member. The driving end of the first driving member is connected to the backrest assembly, and the driving end of the second driving member is connected to the leg assembly. The backrest assembly is provided with a third driving member, and the driving end of the third driving member is connected to the waist assembly.

2. The 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 third driving member, and one side of the top waist component is hinged to the driving end of the third 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 third driving member. The top waist piece is arranged on a side of the vertical connecting member away from the third 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 cross bar and two backrest vertical bars. The backrest cross bar is connected to the driving end of the first driving member. The two backrest vertical bars are respectively arranged at both ends of the backrest cross bar, and the two backrest vertical bars are both hinged to the base assembly. The top waist assembly is arranged on the backrest vertical bar.

8. The electric sofa according to claim 1, characterized in that: The leg assembly comprises a leg cross bar, the leg cross bar is hinged to the driving end of the second driving member, and leg rod groups are arranged on both sides of the leg cross bar to realize the extension and retraction of the leg assembly.

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 bar, 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 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 9, characterized in that: When the leg assembly is in an unfolded state, a height of a hinge point between the third link and the fifth link is greater than a height of a hinge point between the second link and the fourth link.

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