Backrest lifting swivel mount and furniture

Abstract

The utility model provides a backrest lifting rotary frame, including support frame, lifting mechanism and rotating mechanism. Lifting mechanism sets up on support frame, including lifting subassembly. Rotating mechanism is installed on lifting subassembly and can follow lifting subassembly lifting activity, and rotating mechanism includes rotating structure, and rotating structure includes first fixed part, rotating power component and rotating installation subassembly. Rotating power component and rotating installation subassembly are installed on lifting subassembly by first fixed part, and first fixed part is provided with first rotation part and second rotation part, one end of rotating power component is connected to first rotation part rotatably, one end of rotating installation subassembly is connected to second rotation part rotatably, and the line between first rotation part and second rotation part forms the included angle between rotating power component and rotating installation subassembly. The end of rotating power component away from first fixed part is rotatably connected with the end of rotating installation subassembly away from first fixed part. The utility model provides a kind of furniture.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a backrest lifting and rotating frame and furniture equipped with the backrest lifting and rotating frame. Background Technology

[0002] As people's living standards improve, their demands for home furnishings such as sofas are also increasing. To accommodate different users, existing sofas generally feature adjustable backrests, allowing for height adjustment according to actual needs. Furthermore, when people rest in chairs or sofas, headrests provide support and cushioning for the head, enhancing comfort. Ergonomically designed headrests conform well to the head and neck, providing effective support and significantly relieving fatigue. However, maintaining a fixed posture for extended periods can lead to neck and head muscle fatigue and hinder relaxation. Adjustable headrests address this drawback, improving neck and head comfort by adjusting height and angle.

[0003] In existing technologies, the angle of a headrest can be manually adjusted, but this requires manual adjustment each time, which is inconvenient. Electric adjustable headrests offer more flexible adjustments and greater convenience. However, most existing electric adjustable headrests have complex structures, and the adjustment process can be choppy, causing inconvenience for operation and maintenance. Furthermore, the headrest and backrest adjustments are usually separate. If a headrest could support the back and neck and be adjustable to the desired angle, it would not only simplify operation and increase comfort but also allow for a simpler internal structure.

[0004] Therefore, it is necessary to provide a back-mounted lifting and rotating frame that is simple in structure, easy to operate, and easy to adjust. Utility Model Content

[0005] The purpose of this utility model is to provide a backrest lifting and rotating frame that is simple in structure, easy to operate, and easy to adjust.

[0006] Another objective of this invention is to provide furniture that is easy and simple to operate, comfortable to use, and provides effective support for the back and neck.

[0007] To achieve the above objectives, this utility model provides a back-to-back lifting and rotating frame, comprising: Support frame; A lifting mechanism, mounted on a support frame, includes lifting components; A rotating mechanism is mounted on a lifting assembly and moves up and down with the lifting assembly. The rotating mechanism includes a rotating structure, which includes a first fixing member, a rotating power component, and a rotating mounting component. The rotating power component and the rotating mounting component are mounted on the lifting assembly via the first fixing member. The first fixing member is provided with a first rotating part and a second rotating part. One end of the rotating power component is rotatably connected to the first rotating part, and one end of the rotating mounting component is rotatably connected to the second rotating part. The line connecting the first rotating part and the second rotating part forms an angle with both the rotating power component and the rotating mounting component. The end of the rotating power component away from the first fixing member is rotatably connected to the end of the rotating mounting component away from the first fixing member.

[0008] Compared with existing technologies, the back-mounted lifting and rotating frame of this utility model can automatically lift and rotate, with a simple structure and convenient operation. The back-mounted lifting and rotating frame includes a support frame, a lifting mechanism, and a rotating mechanism. The lifting mechanism is mounted on the support frame and includes a lifting component capable of lifting and lowering. The rotating mechanism is mounted on the lifting component and can move up and down with it. The rotating mechanism includes a rotating structure, which includes a first fixing member, a rotating power component, and a rotating mounting component. The rotating power component and the rotating mounting component are mounted on the lifting component via the first fixing member, which is fixed to the lifting component. The first fixing member has a first rotating part and a second rotating part. One end of the rotating power component is rotatably connected to the first rotating part, and one end of the rotating mounting component is rotatably connected to the second rotating part. The line connecting the first and second rotating parts forms an angle with both the rotating power component and the rotating mounting component. Furthermore, the end of the rotating power component away from the first fixing member is rotatably connected to the end of the rotating mounting component away from the first fixing member. The line connecting the first and second rotating parts, along with the rotational power assembly and the rotational mounting assembly, forms a triangle. The first fixed component remains stationary, and the line connecting the first and second rotating parts remains unchanged. The rotational power assembly changes its length, causing it and the rotational mounting assembly to rotate relative to the first fixed component. This changes the angle between the line connecting the first and second rotating parts and the rotational power assembly, as well as the angle between the line connecting the first and second rotating parts and the rotational mounting assembly. The triangular structure is stable and reliable; the overall structure does not change arbitrarily when the rotational power assembly is not in operation. This utility model's back-mounted lifting and rotating frame can automatically lift and rotate, and its overall structure is stable and reliable, making operation convenient and simple.

[0009] Preferably, the rotating mounting assembly includes a rotating member and a rotating shaft, with one end of the rotating member rotatably connected to the second rotating part via the rotating shaft.

[0010] Preferably, the first fixed member is provided with a guide post that cooperates with the rotating member, and the end of the rotating member near the rotating shaft is provided with a guide part that cooperates with the guide post. The rotation power assembly is activated to make the guide part rotate along the guide post.

[0011] Preferably, the guide section is provided with a first locking groove and a second locking groove. The guide post is located in the first locking groove so that the rotating structure and the lifting assembly are at a first preset angle. The guide post is located in the second locking groove so that the rotating structure and the lifting assembly are at a second preset angle. The rotating power assembly is activated to make the rotating structure rotate relative to the lifting assembly within the range between the first preset angle and the second preset angle.

[0012] Preferably, the rotational power assembly includes a rotational power component and a telescopic rod. One end of the telescopic rod is connected to the output end of the rotational power component and can extend and retract within the rotational power component. The other end of the telescopic rod is connected to the first rotating part via a first rotating shaft. The rotational power component drives the telescopic rod to extend and retract, causing the telescopic rod to rotate along the first rotating shaft and drive the rotational mounting assembly to rotate.

[0013] Preferably, the rotating component is provided with a receiving groove and a mounting part, the mounting part protruding from one or both sides of the receiving groove, and the rotating power component is installed in the receiving groove.

[0014] Preferably, one end of the rotating power component is provided with a mating part, one end of the receiving groove is provided with a limit block, the mating part is provided in the limit block, and the two sides of the limit block are also provided with connecting parts for positioning the mating part. The rotating power component also includes a second rotating shaft, which passes through the mating part and is installed in the connecting parts on both sides, so that one end of the rotating power component is rotatably connected to the mating part through the second rotating shaft.

[0015] Preferably, the rotating mechanism further includes a support assembly, which includes a second fixing member, a support member, and an elastic reset assembly. The support member is connected to the second fixing member via the elastic reset assembly. The second fixing member is mounted on the lifting assembly. The support member rotates along the second fixing member and has a constant reset tendency under the action of the elastic reset assembly.

[0016] To achieve the other objective mentioned above, this utility model also provides a piece of furniture, including a furniture body, the furniture body including a backrest structure and a headrest, and also including the aforementioned backrest lifting and rotating frame, the backrest lifting and rotating frame being disposed inside the backrest structure and the headrest, by driving the backrest lifting and rotating frame to make the headrest move up and down relative to the backrest structure, and / or to make the headrest rotate relative to the backrest structure within a preset range.

[0017] Compared with the prior art, the furniture of this utility model includes a furniture body, which includes a backrest structure and a headrest. The backrest structure and the headrest have a lifting and rotating frame, which allows the headrest to be raised and lowered relative to the backrest structure and to rotate within a preset range relative to the backrest structure. This provides better support for the back and neck, and the structure is simple, easy to operate, and comfortable to use.

[0018] Preferably, the lifting mechanism further includes a lifting power component and a guide component, and the rotating mechanism includes a rotating structure and a support component. The lifting power component is activated to cause the lifting component to move up and down along the guide component with the rotating mechanism. The lifting component includes at least two lifting rods, the rotating structure is mounted on one lifting rod, the support component is mounted on the other lifting rod, and the headrest is fixed to the rotating structure and the support component. The rotating structure is activated to drive the headrest to rotate relative to the backrest structure within a preset range, and to cause the support component to rotate with the headrest. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a back-mounted lifting and rotating frame provided in one embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Structure diagram of another state.

[0022] Figure 3 yes Figure 1 Another state's structure diagram.

[0023] Figure 4 yes Figure 1 The structure diagram of the next state.

[0024] Figure 5 yes Figure 4 A structural diagram from another angle.

[0025] Figure 6 yes Figure 1 Structural diagram of the first fastener.

[0026] Figure 7 yes Figure 1 Structural diagram of the rotating mounting assembly.

[0027] Figure 8 yes Figure 7 A structural diagram from another angle.

[0028] Figure 9 yes Figure 7 Structural diagram of the rotating component.

[0029] Figure 10 yes Figure 1 Exploded view of the supporting components.

[0030] Figure 11 yes Figure 2 Exploded view of the supporting components.

[0031] Figure 12 This is a structural diagram of the furniture provided in one embodiment of the present utility model.

[0032] Explanation of reference numerals in the attached figures: 1000. Furniture; 1001. Furniture body; 1002. Backrest structure; 1003. Headrest; 100. Backrest lifting and rotating frame; 101. Support frame; 10. Lifting mechanism; 11. Lifting power assembly; 111. Lifting power component; 112. Lifting connection assembly; 12. Guide assembly; 13. Lifting assembly; 131. Lifting rod; 20. Rotating mechanism; 201. Rotating structure; 21. First fixing member; 211. First rotating part; 212. Second rotating part; 213. Guide column; 214. Fixing part; 22. Rotating power assembly; 221. Rotating power component; 2211. Mating part; 222. Telescopic rod; 223. First rotating shaft; 224. Second rotating shaft; 23. Rotating mounting assembly; 230. Rotating component; 231. Receiving groove; 232. Mounting part; 233. Limiting block; 234. Connecting part; 235. Guide part; 2351. First locking groove; 2352. Second locking groove; 236. Rotating shaft; 24. Support assembly; 241. Second fixing member; 242. Support member; 243. Elastic reset assembly; 2431. Elastic member; 2432. Cover. Detailed Implementation

[0033] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] Please see Figures 1 to 4This utility model provides a backrest lifting and rotating frame 100, including a support frame 101, a lifting mechanism 10, and a rotating mechanism 20. The lifting mechanism 10 is disposed on the support frame 101 and includes a lifting component 13 capable of lifting and lowering relative to the support frame 101. The rotating mechanism 20 is mounted on the lifting component 13 and can lift and lower with the lifting component 13. On the other hand, the rotating mechanism 20 includes a rotating structure 201, which includes a first fixing member 21, a rotating power component 22, and a rotating mounting component 23. The rotating power component 22 and the rotating mounting component 23 are mounted on the lifting component 13 via the first fixing member 21. The first fixing member 21 has a first rotating part 211 and a second rotating part 212. One end of the rotating power component 22 is rotatably connected to the first rotating part 211, and one end of the rotating mounting component 23 is rotatably connected to the second rotating part 212. Furthermore, the line connecting the first rotating part 211 and the second rotating part 212 forms an angle with both the rotating power assembly 22 and the rotating mounting assembly 23. That is, the rotating power assembly 22 and the rotating mounting assembly 23 are not completely overlapped, thus forming a stable triangle with the first fixing member 21, making the overall structure more stable and reliable. Additionally, the end of the rotating power assembly 22 away from the first fixing member 21 is rotatably connected to the end of the rotating mounting assembly 23 away from the first fixing member 21. When the rotating power assembly 22 operates, it allows both the rotating power assembly 22 and the rotating mounting assembly 23 to rotate relative to the first fixing member 21, and they also rotate relative to each other.

[0035] Compared with the prior art, the backrest lifting and rotating frame 100 of this utility model can automatically lift and rotate, with a simple structure and convenient operation. The backrest lifting and rotating frame 100 includes a support frame 101, a lifting mechanism 10, and a rotating mechanism 20. The lifting mechanism 10 is disposed on the support frame 101 and includes a lifting component 13 capable of lifting and rotating. The rotating mechanism 20 is mounted on the lifting component 13 and can move up and down with the lifting component 13. The rotating mechanism 20 includes a rotating structure 201, which includes a first fixing member 21, a rotating power component 22, and a rotating mounting component 23. The rotating power component 22 and the rotating mounting component 23 are mounted on the lifting component 13 by means of the first fixing member 21, which is fixed to the lifting component 13. The first fixing member 21 is provided with a first rotating part 211 and a second rotating part 212. One end of the rotating power component 22 is rotatably connected to the first rotating part 211, and one end of the rotating mounting component 23 is rotatably connected to the second rotating part 212. Furthermore, the line connecting the first rotating part 211 and the second rotating part 212 forms an angle with both the rotating power assembly 22 and the rotating mounting assembly 23. Additionally, the end of the rotating power assembly 22 away from the first fixing member 21 is rotatably connected to the end of the rotating mounting assembly 23 away from the first fixing member 21. That is, the line connecting the first rotating part 211 and the second rotating part 212 forms a triangle with the rotating power assembly 22 and the rotating mounting assembly 23. The first fixing member 21 remains fixed, and the line connecting the first rotating part 211 and the second rotating part 212 remains unchanged. The rotation power assembly 22 changes its length, causing the rotating power assembly 22 and the rotating mounting assembly 23 to rotate relative to the first fixing member 21. This changes the angle between the line connecting the first rotating part 211 and the second rotating part 212 and the rotating power assembly 22, as well as the angle between the line connecting the first rotating part 211 and the second rotating part 212 and the rotating mounting assembly 23. The triangular structure is stable and reliable, and the overall structure will not change arbitrarily when the rotation power component 22 is not in operation. The backrest lifting and rotating frame 100 of this utility model can automatically lift and rotate, and the overall structure is stable and reliable, and the operation is convenient and simple.

[0036] Please see Figures 1 to 9In some optional embodiments, the rotating mounting assembly 23 includes a rotating member 230 and a rotating shaft 236. One end of the rotating member 230 is rotatably connected to the second rotating part 212 via the rotating shaft 236. The first fixing member 21 is provided with a guide post 213 that cooperates with the rotating member 230. The end of the rotating member 230 near the rotating shaft 236 is provided with a guide part 235 that cooperates with the guide post 213. The rotation power assembly 22 is activated to cause the guide part 235 to rotate along the guide post 213. It is understood that when the rotation power assembly 22 is not activated, the rotating member 230 will not rotate freely due to the limitation imposed by the guide part 235 and the guide post 213. The guide post 213 serves as a limiting element, and the guide part 235 abuts against the guide post 213, restricting the rotation of the rotating member 230. On the other hand, when the rotation power assembly 22 is activated, the arc-shaped guide part 235 can rotate along the cylindrical guide post 213. Specifically, a first locking groove 2351 and a second locking groove 2352 are provided within the guide portion 235. When the guide post 213 is located within the first locking groove 2351, the rotating structure 201 and the lifting assembly 13 form a first preset angle. When the guide post 213 is located within the second locking groove 2352, the rotating structure 201 and the lifting assembly 13 form a second preset angle. The rotational power assembly 22 actuates to cause the rotating structure 201 to rotate relative to the lifting assembly 13 within the range between the first and second preset angles. For example, when the guide post 213 is located within the first locking groove 2351, the entire rotating structure 201 is approximately on the same straight line as the lifting rod 131, and the angle between the rotating structure 201 and the lifting rod 131 is approximately 180°. When the guide post 213 is located within the second locking groove 2352, the angle between the entire rotating structure 201 and the lifting rod 131 is approximately 225°. That is, by rotating the power assembly 22, the angle of the headrest 1003 relative to the backrest structure 1002 can be adjusted within the range of 180° to 225° to achieve the desired comfortable angle. Of course, the range of the first preset angle and the second preset angle can also be a suitable angle range such as 165° to 270°.

[0037] Please see Figures 1 to 6In some optional embodiments, the rotational power assembly 22 includes a rotational power element 221 and a telescopic rod 222. One end of the telescopic rod 222 is connected to the output end of the rotational power element 221 and can extend and retract within the rotational power element 221. The other end of the telescopic rod 222 is connected to the first rotating part 211 via a first rotating shaft 223. The rotational power element 221 drives the telescopic rod 222 to extend and retract, causing the telescopic rod 222 to rotate along the first rotating shaft 223 and drive the rotating mounting assembly 23 to rotate. Specifically, the rotational power element 221 actuates to cause the telescopic rod 222 to extend and retract within the rotational power element 221, and the extension and retraction of the telescopic rod 222 causes a change in the overall length of the rotational power assembly 22. One end of the telescopic rod 222 is rotatably connected to the first rotating part 211, and the rotational power element 221 is also rotatably connected to the rotating mounting assembly 23, thereby causing the rotational power assembly 22 to drive the rotating mounting assembly 23 to rotate relative to the first fixing member 21, thereby adjusting the angle of the headrest 1003 relative to the backrest structure 1002. The first fixing member 21 is connected to and fixed on the lifting rod 131 via the fixing part 214.

[0038] Please see Figures 7 to 9 In some optional embodiments, the rotating member 230 is provided with a receiving groove 231 and a mounting part 232, the mounting part 232 protruding from one or both sides of the receiving groove 231, and the rotating power member 221 is installed in the receiving groove 231. The mounting part 232 can be used to fix the headrest 1003.

[0039] Please see Figures 1 to 5 and Figures 7 to 9 In some optional embodiments, one end of the rotating power member 221 has a protruding mating portion 2211, and one end of the receiving groove 231 has a limiting block 233. The mating portion 2211 is disposed within the limiting block 233 to make the structure more stable. Additionally, connecting portions 234 for positioning the mating portion 2211 are provided on both sides of the limiting block 233. The rotating power assembly 22 also includes a second rotating shaft 224. Specifically, the second rotating shaft 224 passes through the mating portion 2211 and its two ends are installed within the connecting portions 234 on both sides, so that one end of the rotating power member 221 is rotatably connected to the mating portion 2211 via the second rotating shaft 224. It can be understood that with the limiting block 233 and the connecting portion 234 limiting the mating portion 2211, the angle between the rotating power member 221 and the rotating member 230 remains approximately unchanged. When the telescopic rod 222 extends or retracts, the overall length of the rotating power assembly 22 changes, driving the rotating component 230 to rotate around the rotating shaft 236, thereby achieving the angle adjustment of the headrest 1003 relative to the backrest structure 1002.

[0040] Please see Figures 1 to 4 and Figure 10 and Figure 11In some optional embodiments, the rotating mechanism 20 further includes a support assembly 24, which includes a second fixing member 241, a support member 242, and an elastic reset assembly 243. The support member 242 is connected to the second fixing member 241 via the elastic reset assembly 243. The second fixing member 241 is mounted on the lifting assembly 13. The support member 242 rotates along the second fixing member 241 and maintains a constant reset tendency under the action of the elastic reset assembly 243. For example, the support member 242 is used to mount a headrest 1003, which is mounted on the support of the support member 242 and the support portion of the rotating member 230, resulting in a stable and reliable structure. The elastic reset assembly 243 includes an elastic member 2431 and a cover 2432, with the cover 2432 covering the elastic member 2431. For example, the elastic member 2431 can be a spring-loaded spring. One end of the elastic member 2431 is connected to the support member 242, and the other end is connected to the second fixing member 241. The structure of the second fixing member 241 is roughly the same as that of the first fixing member 21. When adjusting the angle of the headrest 1003, the headrest 1003 rotates with the rotating structure 201, causing the support member 242 to rotate relative to the second fixing member 241 along with the headrest 1003. The rotating support member 242 continuously compresses the elastic member 2431. When it is necessary to adjust the headrest 1003 back, the headrest 1003 rotates back with the rotating structure 201, and the headrest 1003 rotates back with the support member 242. At the same time, under the elastic force of the elastic member 2431, the support member 242 can be reset more smoothly without any jamming or other phenomena.

[0041] Please see Figures 1 to 4 In some optional embodiments, the lifting mechanism 10 further includes a lifting power component 11 and a guide component 12. The rotating mechanism 20 includes a rotating structure 201 and a support component 24. The lifting power component 11 includes a lifting power element 111 and a lifting connection component 112. The lifting connection component 112 is disposed at the output end of the lifting power element 111, and the lifting component 13 is connected to the lifting connection component 112. The lifting power element 111 actuates to cause the lifting component 13 to move up and down along the guide component 12 with the rotating mechanism 20. The lifting component 13 includes at least two lifting rods 131. The rotating structure 201 is mounted on one lifting rod 131, and the support component 24 is mounted on the other lifting rod 131. The headrest 1003 is fixed to the rotating structure 201 and the support component 24. The rotating structure 201 actuates to drive the headrest 1003 to rotate relative to the backrest structure 1002 within a preset range, and causes the support component 24 to rotate with the headrest 1003.

[0042] Please see Figure 12The present invention also provides a piece of furniture 1000, including a furniture body 1001, the furniture body 1001 including a backrest structure 1002 and a headrest 1003, and also including the aforementioned backrest lifting and rotating frame 100. The backrest lifting and rotating frame 100 is disposed in the backrest structure 1002 and the headrest 1003. By driving the backrest lifting and rotating frame 100, the headrest 1003 can be raised and lowered relative to the backrest structure 1002, and / or the headrest 1003 can be rotated relative to the backrest structure 1002 within a preset range. Compared with the prior art, the furniture 1000 of this utility model includes a furniture body 1001, which includes a backrest structure 1002 and a headrest 1003. The backrest structure 1002 and the headrest 1003 have a backrest lifting and rotating frame 100, which allows the headrest 1003 to be raised and lowered relative to the backrest structure 1002 and to rotate relative to the backrest structure 1002 within a preset range. This provides better support for the back and neck, and the structure is simple, easy to operate, and comfortable to use.

[0043] like Figures 1 to 12As shown, the furniture 1000 of this utility model can be a sofa. The furniture 1000 includes a backrest lifting and rotating frame 100, enabling the headrest 1003 to automatically lift and rotate relative to the backrest structure 1002 to adjust its angle. The structure is simple, easy to operate, and more comfortable to use. The backrest lifting and rotating frame 100 includes a support frame 101, a lifting mechanism 10, and a rotating mechanism 20. The lifting mechanism 10 is mounted on the support frame 101 and includes a lifting component 13 capable of lifting and lowering. The rotating mechanism 20 is mounted on the lifting component 13 and can move up and down with the lifting component 13. The rotating mechanism 20 includes a rotating structure 201 and a support component 24, which fix the headrest 1003 from both sides, resulting in a stable and reliable structure. The rotating structure 201 includes a first fixing member 21, a rotating power component 22, and a rotating mounting component 23. The rotating power assembly 22 and the rotating mounting assembly 23 are mounted on a lifting rod 131 via a first fixing member 21, and the support assembly 24 is mounted on another lifting rod 131. The first fixing member 21 has a first rotating part 211 and a second rotating part 212. One end of the rotating power assembly 22 is rotatably connected to the first rotating part 211, and one end of the rotating mounting assembly 23 is rotatably connected to the second rotating part 212. Furthermore, the line connecting the first rotating part 211 and the second rotating part 212 forms an angle with both the rotating power assembly 22 and the rotating mounting assembly 23. Additionally, the end of the rotating power assembly 22 away from the first fixing member 21 is rotatably connected to the end of the rotating mounting assembly 23 away from the first fixing member 21. That is, the line connecting the first rotating part 211 and the second rotating part 212 forms a triangle with the rotating power assembly 22 and the rotating mounting assembly 23. The first fixing member 21 remains fixed, and the line connecting the first rotating part 211 and the second rotating part 212 remains unchanged. The rotational power assembly 22 changes its length, causing it and the rotational mounting assembly 23 to rotate relative to the first fixed member 21. This changes the angle between the line connecting the first rotating part 211 and the second rotating part 212 and the rotational power assembly 22, as well as the angle between the line connecting the first rotating part 211 and the second rotating part 212 and the rotational mounting assembly 23. Consequently, it alters the angle of the headrest 1003 relative to the backrest structure 1002. The triangular structure is stable and reliable; the overall structure does not change arbitrarily when the rotational power assembly 22 is not in operation. The backrest lifting and rotating frame 100 of this invention can automatically lift and rotate the headrest 1003 relative to the backrest structure 1002, and the overall structure is stable and reliable, with convenient and simple operation. The sofa of this utility model has a headrest 1003 that can support the back and the head and neck according to actual needs. The height and angle of the headrest 1003 can be adjusted by the backrest lifting and rotating frame 100 to meet the needs of people of various heights and make the use more comfortable.

[0044] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A back-to-back lifting and rotating frame, characterized in that, include: Support frame; A lifting mechanism, mounted on the support frame, includes a lifting assembly; A rotating mechanism is mounted on the lifting assembly and can move up and down with the lifting assembly. The rotating mechanism includes a rotating structure, which includes a first fixing member, a rotating power component, and a rotating mounting component. The rotating power component and the rotating mounting component are mounted on the lifting assembly via the first fixing member. The first fixing member is provided with a first rotating part and a second rotating part. One end of the rotating power component is rotatably connected to the first rotating part, and one end of the rotating mounting component is rotatably connected to the second rotating part. The line connecting the first rotating part and the second rotating part forms an angle with both the rotating power component and the rotating mounting component. The end of the rotating power component away from the first fixing member is rotatably connected to the end of the rotating mounting component away from the first fixing member.

2. The back-to-back lifting and rotating frame according to claim 1, characterized in that, The rotating mounting assembly includes a rotating component and a rotating shaft, with one end of the rotating component rotatably connected to the second rotating part via the rotating shaft.

3. The back-to-back lifting and rotating frame according to claim 2, characterized in that, The first fixing member is provided with a guide post that cooperates with the rotating member. The rotating member is provided with a guide part that cooperates with the guide post at one end near the rotating shaft. The rotation power component is activated to make the guide part rotate along the guide post.

4. The back-to-back lifting and rotating frame according to claim 3, characterized in that, The guide section is provided with a first locking groove and a second locking groove. The guide post is located in the first locking groove so that the rotating structure and the lifting assembly are at a first preset angle. The guide post is located in the second locking groove so that the rotating structure and the lifting assembly are at a second preset angle. The rotating power assembly is activated to make the rotating structure rotate relative to the lifting assembly within the range between the first preset angle and the second preset angle.

5. The back-to-back lifting and rotating frame according to claim 2, characterized in that, The rotational power assembly includes a rotational power component and a telescopic rod. One end of the telescopic rod is connected to the output end of the rotational power component and can extend and retract within the rotational power component. The other end of the telescopic rod is connected to the first rotating part via a first rotating shaft. The rotational power component drives the telescopic rod to extend and retract, causing the telescopic rod to rotate along the first rotating shaft and drive the rotational mounting assembly to rotate.

6. The back-to-back lifting and rotating frame according to claim 5, characterized in that, The rotating component is provided with a receiving groove and a mounting part. The mounting part protrudes from one or both sides of the receiving groove, and the rotating power component is installed in the receiving groove.

7. The back-to-back lifting and rotating frame according to claim 6, characterized in that, One end of the rotating power component has a protruding mating part, one end of the receiving groove has a limiting block, the mating part is disposed in the limiting block, and the limiting block has connecting parts on both sides for positioning the mating part. The rotating power component also includes a second rotating shaft, which passes through the mating part and is installed at both ends in the connecting parts on both sides, so that one end of the rotating power component is rotatably connected to the mating part through the second rotating shaft.

8. The back-to-back lifting and rotating frame according to claim 1, characterized in that, The rotating mechanism further includes a support assembly, which includes a second fixing member, a support member, and an elastic reset assembly. The support member is connected to the second fixing member via the elastic reset assembly. The second fixing member is mounted on the lifting assembly. The support member rotates along the second fixing member and has a constant reset tendency under the action of the elastic reset assembly.

9. A piece of furniture, comprising a furniture body, said furniture body including a backrest structure and a headrest, characterized in that, It also includes the backrest lifting and rotating frame as described in any one of claims 1-8, wherein the backrest lifting and rotating frame is disposed within the backrest structure and the headrest, and the headrest is raised and lowered relative to the backrest structure by driving the backrest lifting and rotating frame, and / or the headrest is rotated relative to the backrest structure within a preset range.

10. The furniture according to claim 9, characterized in that, The lifting mechanism further includes a lifting power component and a guide component. The rotating mechanism includes the rotating structure and a support component. The lifting power component is activated to cause the lifting component to move up and down along the guide component, carrying the rotating mechanism. The lifting component includes at least two lifting rods. The rotating structure is mounted on one of the lifting rods, and the support component is mounted on the other lifting rod. The headrest is fixed to the rotating structure and the support component. The rotating structure is activated to drive the headrest to rotate relative to the backrest structure within a preset range, and to cause the support component to rotate with the headrest.

Images