An electrically powered sofa support that is easy to raise

Abstract

The utility model relates to an easy electric sofa support of lifting, including bottom frame subassembly, the seat frame subassembly of being located bottom frame subassembly top, the leg support subassembly is set in seat frame subassembly front side, still include transmission assembly and second electric push rod, transmission assembly's front side and leg support subassembly transmission cooperation, transmission assembly and seat frame subassembly's front side transmission cooperation, second electric push rod and transmission assembly transmission cooperation, through with the upper portion of second transmission connecting rod in transmission assembly and seat frame support front part rotation cooperation, the rotation connection between seat frame support and connecting frame through seat frame pin shaft, make second transmission connecting rod can drive seat frame support to lift, realize the lifting of seat frame subassembly, realize seat frame subassembly to lean when user is in the sitting posture state, leg does not stretch open, the front end of seat frame support is lifted when user is in the lying state, make the leg of user and seat frame subassembly close to be a horizontal line, improve the use comfort degree.

Description

Technical Field

[0001] This utility model relates to the field of sofa support technology, and in particular to an electric sofa support that is easy to raise. Background Technology

[0002] Electric sofas are intelligent furniture pieces that control the backrest height and seat cushion movement via buttons. They use electric push rods to convert the motor's rotational motion into linear motion, enabling the switching between sitting and reclining postures. The core difference between electric sofas and traditional sofas lies in their adjustability, comfort, and spatial adaptability. Electric sofas are ergonomically designed, support multi-angle adjustments, and can precisely support the lumbar and cervical spine, reducing fatigue even after prolonged sitting.

[0003] The applicant's earlier application, authorized by publication number CN111053392B, entitled "Electric Sofa Frame Suitable for Improving the Telescopic Stability of Footrest Bracket," includes a seat frame with a pair of mounting plates; a footrest bracket, located on the front side of the seat frame, suitable for extension and retraction movements; a drive frame, including a drive rod and two drive arms, with pins and guide posts fixedly connected to the two drive arms respectively, and the two drive arms rotatably connected to the mounting plates on both sides via pins; the mounting plates have arc-shaped guide grooves, and the drive arms are provided with guide posts that extend out of the guide grooves; and a footrest connecting rod, located on the seat frame, is connected to the guide posts and the footrest bracket respectively.

[0004] The electric sofa support described above optimizes the seat frame structure, making it more streamlined and reducing the weight of both the seat frame and the entire sofa support. However, this type of electric sofa support cannot raise the feet higher. To meet the needs of different consumers, it is necessary to raise the footrest. Simply changing the drive stroke can only raise the feet, but it cannot raise the seat cushion. This would give the user the feeling of having to pull their feet upwards, which is not an ideal solution. Utility Model Content

[0005] The technical problem to be solved by this utility model is to design a stable, reliable, and easy-to-raise electric sofa support that improves user comfort.

[0006] To solve the above-mentioned technical problems, this utility model provides an electric sofa support that is easy to lift, including a base frame assembly and a seat frame assembly disposed above the base frame assembly; The leg support assembly is located on the front side of the seat frame assembly and is suitable for stretching and contraction movements. It also includes a transmission assembly and a second electric push rod. The front side of the transmission assembly is in transmission engagement with the leg support assembly and the front side of the seat frame assembly. The second electric push rod is in transmission engagement with the transmission assembly, so that the second electric push rod drives the leg support assembly to extend and retract, and synchronously drives the front side of the seat frame assembly to rise and fall.

[0007] Furthermore, the easily raised electric sofa support also includes a backrest assembly located behind the seat frame assembly, suitable for extension and retraction movements; it also includes a first electric push rod that is driven in conjunction with the backrest assembly to drive the backrest assembly to extend and retract.

[0008] Furthermore, the bottom frame assembly includes two horizontal supports and two vertical supports fixedly connected together, with a vertical seat fixedly mounted on each vertical support. The bottom frame assembly also includes a set of first connecting rods and a set of second connecting rods. The rear ends of the first connecting rods and the second connecting rods are rotatably connected to the vertical seats, and the front ends of the first connecting rods and the second connecting rods are rotatably connected to the seat frame assembly.

[0009] Furthermore, the seat frame assembly includes two seat frame supports, each with a connecting frame disposed at the lower center of its respective seat frame support. The connecting frame is rotatably connected to the seat frame support via a seat frame pin. A mounting plate is fixedly disposed at the front end of the connecting frame. The front ends of the first connecting rod and the second connecting rod are rotatably connected to the front end of the mounting plate. The front end of the seat frame support is rotatably connected to the leg support assembly, and the rear end of the seat frame support is rotatably connected to the backrest assembly.

[0010] Furthermore, a third reinforcing rod is fixedly installed between the connecting brackets, and a fourth reinforcing rod is fixedly installed between the mounting plates to provide support for the seat frame assembly.

[0011] Furthermore, the transmission assembly includes a drive rod, with drive arms fixedly mounted at both ends of the drive rod. The lower end of each drive arm is rotatably connected to the mounting plate. An arc-shaped guide groove is provided on the mounting plate. The transmission assembly also includes two sets of linkage assemblies consisting of a first transmission link, a second transmission link, a third transmission link, a fourth transmission link, and a fifth transmission link. The middle part of the first transmission link is rotatably connected to the mounting plate via a pin. The upper part of the first transmission link and the lower part of the second transmission link slide in cooperation with the arc-shaped guide groove via guide posts. The other end of the guide posts is connected to the drive arm, so that the drive arm drives the first transmission link. The moving connecting rod rotates around the pin shaft along the arc-shaped guide groove, and the second transmission connecting rod slides along the arc-shaped guide groove; the upper part of the second transmission connecting rod is rotatably engaged with the front part of the seat frame bracket, the lower part of the first transmission connecting rod is rotatably connected with the front part of the third transmission connecting rod, the rear part of the third transmission connecting rod is rotatably connected with the lower part of the fourth transmission connecting rod, the upper part of the fourth transmission connecting rod is drivenly engaged with the leg support assembly, the lower part of the fifth transmission connecting rod is rotatably connected with the middle part of the third transmission connecting rod, and the upper part of the fifth transmission connecting rod is rotatably engaged with the rear part of the seat frame bracket, so that when the drive arm moves, it drives the leg support assembly and the seat frame bracket to move.

[0012] Furthermore, one end of the second electric push rod is rotatably connected to the transverse support, and the other end of the second electric push rod is rotatably connected to the drive rod, so that the drive rod is moved by the second electric push rod.

[0013] Furthermore, the backrest assembly includes a fifth reinforcing rod, with backrest brackets fixedly mounted at both ends of the fifth reinforcing rod. Each backrest bracket is fixedly mounted with a backrest connecting rod, which is T-shaped. One side of the backrest connecting rod is rotatably connected to the rear end of the seat frame bracket. One end of the first electric push rod is rotatably connected to the fifth reinforcing rod, and the other end of the first electric push rod is rotatably connected to the fourth reinforcing rod, so that the first electric push rod drives the backrest assembly to move.

[0014] Furthermore, the leg support assembly includes a first leg support link, a second leg support link, a third leg support link, and a fourth leg support link. The rear end of the first leg support link is rotatably connected to the front end of the third leg support link. The rear end of the third leg support link is rotatably connected to the lower front end of the seat frame bracket. The rear end of the fourth leg support link is rotatably connected to the upper front end of the seat frame bracket. The middle part of the fourth leg support link is rotatably connected to the middle part of the first leg support link. The front end of the fourth leg support link is rotatably connected to the rear end of the second leg support link. The front ends of the second leg support link and the first leg support link are rotatably connected to the footrest bracket. The upper part of the fourth transmission link is rotatably connected to the middle part of the third leg support link. The fourth transmission link drives the leg support assembly to extend and retract. A footrest mounting seat is rotatably provided on the footrest bracket so that the footrest bracket can be extended and retracted.

[0015] Furthermore, the leg support assembly also includes a leg support bracket, the middle part of which is rotatably connected to the middle part of the first leg support link. The bottom of the leg support bracket is provided with an oblong hole, and the second leg support link is provided with a limiting shaft that is inserted into the oblong hole to limit the rotation range of the leg support bracket.

[0016] Furthermore, a first reinforcing rod and a second reinforcing rod are provided between the first connecting rods to support the first connecting rods; support feet are provided at the bottom of both ends of the first reinforcing rod so that the support feet are placed on the longitudinal support when the seat frame assembly is lowered, thereby supporting the seat frame assembly.

[0017] Furthermore, mounting seats are provided at both ends of the outer side of the seat frame bracket.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by rotating the upper part of the second transmission link in the transmission assembly with the front part of the seat frame bracket, and rotating the seat frame bracket and the connecting frame through the seat frame pin, the second transmission link can drive the seat frame bracket to rise and fall, thereby raising the seat frame assembly. That is, when the user is in a sitting position and the legs are not stretched out, the seat frame assembly tilts, and when the user is in a lying position, the front end of the seat frame bracket is raised, so that the user's legs and the seat frame assembly are close to a horizontal line, improving the comfort of use; the backrest assembly and the leg support assembly are driven by different electric push rods, which are flexible in adjustment; the bottom of the first reinforcing rod is provided with a support foot to facilitate the support of the seat frame assembly. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the easily raised electric sofa support of this utility model in its extended state. Figure 2 This is a three-dimensional structural diagram of the easily raised electric sofa support of this utility model when it is in a seated position. Figure 3 This is a three-dimensional structural diagram of the easily raised electric sofa support of this utility model when it is in the raised state. Figure 4 This is a three-dimensional structural diagram of the base frame assembly of the easily raised electric sofa support of this utility model; Figure 5 This is a three-dimensional structural diagram of the leg support assembly of the easily raised electric sofa frame of this utility model; Figure 6 This is a three-dimensional structural diagram of the seat frame assembly of the easily raised electric sofa support of this utility model; Figure 7 This is a three-dimensional structural diagram of the backrest assembly of the easily raised electric sofa support of this utility model; Figure 8 This is a three-dimensional structural diagram of the transmission component of the easily raised electric sofa support of this utility model; In the picture: The base frame assembly 10, the horizontal support 101, the vertical support 102, the vertical seat 103, the first connecting rod 104, the second connecting rod 105, the first reinforcing rod 106, the second reinforcing rod 107, the extension support 108, and the support foot 109. Seat frame assembly 20, seat frame bracket 201, mounting plate 202, third reinforcing rod 203, fourth reinforcing rod 204, arc-shaped guide groove 205, pin hole 206, connecting bracket 207, mounting base 208, seat frame pin 209; Backrest assembly 30, backrest link 301, backrest bracket 302, fifth reinforcing bar 303 Leg support assembly 40, leg support first link 401, leg support second link 402, leg support third link 403, leg support fourth link 404, leg support bracket 405, foot support bracket 406, foot support mounting base 407. Transmission assembly 50, drive rod 501, drive arm 502, first transmission link 503, second transmission link 504, third transmission link 505, fourth transmission link 506, fifth transmission link 507, guide post 508, pin 509; First electric push rod 601, second electric push rod 602, first push rod support 603, second push rod support 604, third push rod support 605, fourth push rod support 606. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Please see Figures 1-8 An easy-to-raise electric sofa support includes a base frame assembly 10 and a seat frame assembly 20 disposed above the base frame assembly 10; The backrest assembly 30 is located on the rear side of the seat frame assembly 20 and is suitable for stretching and contracting movements. The leg support assembly 40 is located on the front side of the seat frame assembly 20 and is suitable for stretching and contraction movements. It also includes a transmission assembly 50 and a first electric push rod 601 and a second electric push rod 602.

[0022] Specifically, such as Figure 4 As shown, the bottom frame assembly 10 includes two horizontal supports 101 and two vertical supports 102. The two ends of the left and right vertical supports 102 are fixed to the front and rear horizontal supports 101 by welding (or riveting or screw connection), so that the bottom frame assembly 10 is rectangular. The two ends of the horizontal support 101 located on the rear side are fixed to the rear (i.e., the backrest direction) with extension supports 108. The bottom of the two extension supports 108 is respectively provided with pads 109.

[0023] Furthermore, a fourth push rod support 606 is fixedly installed in the middle of the transverse support 101 located on the rear side, and one end of the second electric push rod 602 is rotatably connected to the fourth push rod support 606 to realize the movable connection between the second electric push rod 602 and the transverse support 101.

[0024] Two longitudinal supports 102 are fixedly mounted on the middle of each vertical seat 103 (which can be fixed by welding, riveting, or screw connection). The bottom frame assembly 10 also includes two first connecting rods 104 and two second connecting rods 105. Each vertical seat 103 is provided with one first connecting rod 104 and one second connecting rod 105. The rear ends of the first connecting rods 104 and the second connecting rods 105 are rotatably connected to the upper and lower ends of the corresponding vertical seat 103 via rotating pins. The front ends of the first connecting rods 104 and the second connecting rods 105 are rotatably connected to the seat frame assembly 20.

[0025] A first reinforcing rod 106 is provided between the inner front ends of the two first connecting rods 104, and a second reinforcing rod 107 is provided between the middle parts of the two first connecting rods 104. The two ends of the first reinforcing rod 106 and the second reinforcing rod 107 are respectively fixedly connected to the two first connecting rods 104 (they can be fixed by welding, riveting, or screw connection, etc.), thus supporting the two first connecting rods 104. Support feet 108 are respectively provided at the bottom of the two ends of the first reinforcing rod 106, so that when the seat frame assembly 20 is lowered, the two support feet 108 are respectively placed on the left and right longitudinal supports 102, thus supporting the seat frame assembly 20.

[0026] like Figure 6 As shown, the seat frame assembly 20 includes two seat frame supports 201. A connecting frame 207 is respectively provided at the lower middle part of each seat frame support 201. The rear end of the connecting frame 207 is rotatably connected to the seat frame support 201 via a seat frame pin 209, so that the seat frame support 201 can rotate around the seat frame pin 209. A mounting plate 202 is fixedly provided at the front end of each connecting frame 207, that is, the rear end of the mounting plate 202 is fixedly connected to the front end of the connecting frame 207. A third reinforcing rod 203 is fixedly provided between the two connecting frames 207, and a fourth reinforcing rod 204 is fixedly provided between the two mounting plates 202 to support the seat frame assembly 20. A first push rod support 603 is provided at the middle of the fourth reinforcing rod 204, and one end of the first electric push rod 601 is rotatably connected to the first push rod support 603. The front ends of the two first connecting rods 104 and the two second connecting rods 105 are rotatably connected to the corresponding side mounting plates 202, and the connection points of the front ends of the two first connecting rods 104 and the mounting plates 202 are located on the lower side of both ends of the fourth reinforcing rod 204, and the connection points of the front ends of the two second connecting rods 105 and the mounting plates 202 are located diagonally above both ends of the fourth reinforcing rod 204; mounting seats 208 are respectively provided at the outer ends of the two seat frame brackets 201, and arc-shaped guide grooves 205 are provided on the upper front part of each mounting plate 202, and pin holes 206 are provided below the arc-shaped guide grooves 205.

[0027] like Figure 8As shown, the transmission assembly 50 includes a drive rod 501, with drive arms 502 fixedly mounted at both ends of the drive rod 501. The two ends of the drive rod 501 are fixedly connected to the tops of the two drive arms 502, and the lower parts of the two drive arms 502 are respectively provided with pins 509 that are adapted to the pin holes 206, so that the lower ends of the drive arms 502 are rotatably connected to the mounting plate 202.

[0028] The transmission assembly 50 also includes two sets of linkage assemblies with the same structure, consisting of a first transmission link 503, a second transmission link 504, a third transmission link 505, a fourth transmission link 506, and a fifth transmission link 507. In each linkage assembly, the middle of the first transmission link 503 is rotatably connected to the mounting plate 202 via a pin 509. Specifically, the pin 509 passes through the pin hole 206, allowing both ends of the pin 509 to rotatably engage with the drive arm 202 and the first transmission link 503, respectively. The upper part of the first transmission link 503 is also provided with a guide post 508 that slides into the arc-shaped guide groove 205, allowing the first transmission link 503 to slide into the arc-shaped guide groove 205 via the guide post 508. 5. Sliding engagement: The other end of the guide post 508 passes through the arc-shaped guide groove 205 and rotates with the upper part of the drive arm 502, so that the drive arm 502 drives the first transmission link 503 to rotate around the pin 509 along the arc-shaped guide groove 205. The drive arm 502 and the first transmission link 503 are respectively placed on the inner and outer sides of the mounting plate 202. The lower end of the second transmission link 504 is also rotatably connected to the guide post 508, so that the second transmission link 504 slides with the arc-shaped guide groove 205 through the guide post 508. The upper part of the second transmission link 504 rotates with the front part of the seat frame bracket 201, and the front part of the seat frame bracket 201 moves due to the second transmission link 504. The lower part of the first transmission link 503 is rotatably connected to the front part of the third transmission link 505, the rear part of the third transmission link 505 is rotatably connected to the lower part of the fourth transmission link 506, and the upper part of the fourth transmission link 506 is in transmission engagement with the leg support assembly 40, thereby driving the leg support assembly 40 to extend and retract. The lower part of the fifth transmission link 507 is rotatably connected to the middle part of the third transmission link 505, and the upper part of the fifth transmission link 507 is rotatably engaged with the rear part of the seat frame bracket 201. The connection point between the upper part of the fifth transmission link 507 and the seat frame bracket 201 is located on the front side of the seat frame pin 209, so that when the drive arm 502 moves, the fifth transmission link 507 drives the seat frame bracket 201 to move.

[0029] A third push rod support 605 is provided in the middle of the drive rod 501, and the other end of the second electric push rod 602 is rotatably connected to the third push rod support 605, so that the second electric push rod 602 is positioned between the transverse support 101 and the drive rod 501.

[0030] like Figure 7As shown, the backrest assembly includes a fifth reinforcing rod 303. Backrest brackets 302 are fixedly installed at both ends of the fifth reinforcing rod 303, that is, the bottom end of the backrest bracket 302 is fixedly connected to the fifth reinforcing rod 303. A backrest connecting rod 301 is installed at the top of each backrest bracket 302. The backrest connecting rod 301 is T-shaped. One side of the bottom end of the backrest connecting rod 301 is rotatably connected to the rear end of the seat frame bracket 201, and the other side of the bottom end of the backrest connecting rod 301 is fixedly connected to the backrest bracket 302. A second push rod support 604 is fixedly installed in the middle of the fifth reinforcing rod 303. One end of the first electric push rod 601 is rotatably connected to the second push rod support 604. That is, the first electric push rod 601 is installed between the fifth reinforcing rod 303 and the fourth reinforcing rod 204, thereby realizing the function of the first electric push rod 601 driving the backrest assembly 30 to move.

[0031] like Figure 5 As shown, the leg support assembly 40 includes a first leg support link 401, a second leg support link 402, a third leg support link 403, a fourth leg support link 404, and a foot support bracket 406. Each of the first leg support link 401, second leg support link 402, third leg support link 403, fourth leg support link 404, and foot support bracket 406 consists of two links, forming two sets of components with the same structure. The rear end of the first leg support link 401 is rotatably connected to the front end of the third leg support link 403, and the rear end of the third leg support link 403 is rotatably connected to the lower front end of the seat frame bracket 201. The fourth leg support link 404... The rear end of rod 404 is rotatably connected to the upper front end of seat frame bracket 201. The middle part of leg support fourth link 404 is rotatably connected to the middle part of leg support first link 401. The front end of leg support fourth link 404 is rotatably connected to the rear end of leg support second link 402. The front end of leg support second link 402 and the front end of leg support first link 401 are rotatably connected to foot support bracket 406. The upper part of fourth transmission link 506 is rotatably connected to the middle part of leg support third link 403. Foot support mounting base 407 is rotatably provided on each foot support bracket 406 so that the foot support bracket 406 can be telescopically set.

[0032] When the drive arm 502 moves, it drives the third link 403 of the leg support to move via the first transmission link 503, the third transmission link 505, and the fourth transmission link 506, thereby completing the movement of the leg support assembly 40.

[0033] Preferably, the leg support assembly 40 further includes two leg support brackets 405. The middle part of each leg support bracket 405 is rotatably connected to the middle part of the corresponding first leg support link 401 via a rotating pin. The bottom of the leg support bracket 405 is provided with an oblong hole. The second leg support link 402 is provided with a limiting shaft that is inserted into the oblong hole to limit the rotation range of the leg support bracket 405, so that the leg support bracket 405 rotates around the rotating pin with the second leg support link 402.

[0034] The aforementioned easy-to-raise electric sofa stand includes three working modes: The first type is the lying-flat mode, such as Figure 1 As shown, the user is in a supine position. At this time, the first electric push rod 601 is extended, and the second electric push rod 602 is retracted. The first electric push rod 601 drives the fifth reinforcing rod 303 to move backward (towards the backrest assembly 30), causing the backrest connecting rod 301 to tilt backward, facilitating the user's head to lie flat. The retracted second electric push rod 602 pulls the drive rod 501 backward (towards the end near the backrest assembly 30). At this time, the guide post 508 on the drive arm 502 is located... The rear end of the arc-shaped guide groove 205 (i.e., the end closest to the backrest assembly 30) is driven by the drive arm 502 via the guide post 509 to move the upper end of the first transmission link 503 and the lower end of the second transmission link 504, so that the first transmission link 503 and the second transmission link 504 are on the same straight line. The top end of the second transmission link 504 drives the front end of the seat frame bracket 201 to tilt upward, which, together with the backrest link 301, pulls the seat frame bracket 201 backward, realizing the function of the seat frame bracket 201 rotating around the seat frame pin 209. Furthermore, the lower part of the first transmission link 503 moves forward (i.e., towards the leg support assembly 40), driving the third transmission link 505 and the fourth transmission link 506 to move. The fourth transmission link 506 drives the third leg support link 403, the first leg support link 401, the second leg support link 402, the fourth leg support link 404, and the foot support bracket 406 to fully unfold. The third transmission link 505 simultaneously drives the fifth transmission link 507 to move, and the fifth transmission link 507 assists the second transmission link 504 in driving the seat frame bracket 201 to move. At this time, the first link 104 and the second link 105 are in a horizontal state.

[0035] The second type is the sitting posture mode, such as Figure 2 As shown, to facilitate the user's normal sitting posture, the first electric push rod 601 is in a semi-extended state, and the second electric push rod 602 is in an extended state. The first electric push rod 601 drives the fifth reinforcing rod 303 to move forward (i.e., in the direction of the leg support assembly 40), causing the backrest connecting rod 301 to tilt slightly upward. The second electric push rod 602, in the extended state, pulls the drive rod 501 forward (i.e., in the direction of the leg support assembly 40). At this time, the guide post 508 on the drive arm 502 is located at the front end of the arc-shaped guide groove 205 (i.e., the end close to the leg support assembly 40). The drive arm 502 drives the upper end of the first transmission connecting rod 503 and the lower end of the second transmission connecting rod 504 to move towards the leg support assembly 40 through the guide post 509, so that the first transmission connecting rod 503 and the second transmission connecting rod 504 are arranged in a V-shape. The top end of the second transmission connecting rod 504 drives the front end of the seat frame bracket 201 to descend. Furthermore, the lower part of the first transmission link 503 moves backward (i.e., towards the backrest assembly 30), driving the third transmission link 505 and the fourth transmission link 506 to move. The fourth transmission link 506 drives the third leg support link 403, the first leg support link 401, the second leg support link 402, the fourth leg support link 404, and the footrest bracket 406 to retract. The third transmission link 505 simultaneously drives the fifth transmission link 507 to move, and the fifth transmission link 507 assists the second transmission link 504 in driving the seat frame bracket 201 to descend. At this time, the first link 104 and the second link 105 are in a horizontal state.

[0036] In the sitting mode, compared to the reclining mode, the seat frame support 201 can rotate 100° around the seat frame pin 209, which makes the seat frame support 201 tilt when the user is reclining, and the angle between it and the leg support assembly 40 is greatly reduced, which greatly improves the user's comfort in the reclining position.

[0037] The third type is the lifting mode, such as Figure 3 As shown, to facilitate the user's standing posture, both the first electric push rod 601 and the second electric push rod 602 are fully extended. The movement of the second electric push rod 602 drives the drive rod 501. Since the leg support assembly 40 cannot move, the drive rod 501 drives the mounting plate 202 to move obliquely upward. The first connecting rod 104 and the second connecting rod 105 are lifted and placed in an inclined state, so that the seat frame assembly 20 and the backrest assembly 30 are in an inclined and raised state as a whole, realizing the standing posture function.

[0038] Obviously, the above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, these obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An easily raised electric sofa support, characterized in that: Includes a base frame assembly and a seat frame assembly located above the base frame assembly; The leg support assembly is located on the front side of the seat frame assembly and is suitable for stretching and contraction movements. It also includes a transmission assembly and a second electric push rod. The front side of the transmission assembly is in transmission engagement with the leg support assembly and the front side of the seat frame assembly. The second electric push rod is in transmission engagement with the transmission assembly, so that the second electric push rod drives the leg support assembly to extend and retract, and synchronously drives the front side of the seat frame assembly to rise and fall. The aforementioned easy-to-raise electric sofa support also includes a backrest assembly, located behind the seat frame assembly, suitable for extending and retracting movements; it also includes a first electric push rod that is driven in conjunction with the backrest assembly to drive the backrest assembly to extend and retract. The bottom frame assembly includes two horizontal supports and two vertical supports that are fixedly connected. A vertical seat is fixedly installed on each vertical support. The bottom frame assembly also includes a set of first connecting rods and a set of second connecting rods. The rear ends of the first connecting rods and the second connecting rods are rotatably connected to the vertical seat, and the front ends of the first connecting rods and the second connecting rods are rotatably connected to the seat frame assembly. The seat frame assembly includes two seat frame supports, each with a connecting frame disposed at the lower center. The connecting frame is rotatably connected to the seat frame support via a seat frame pin. A mounting plate is fixedly disposed at the front end of the connecting frame. The front ends of the first connecting rod and the second connecting rod are rotatably connected to the front end of the mounting plate. The front end of the seat frame support is rotatably connected to the leg support assembly, and the rear end of the seat frame support is rotatably connected to the backrest assembly. The transmission assembly includes a drive rod, with drive arms fixedly mounted at both ends of the drive rod. The lower ends of the drive arms are rotatably connected to the mounting plate. The mounting plate is provided with an arc-shaped guide groove. The transmission assembly also includes two sets of linkage assemblies consisting of a first transmission linkage, a second transmission linkage, a third transmission linkage, a fourth transmission linkage, and a fifth transmission linkage. The middle part of the first transmission linkage is rotatably connected to the mounting plate via a pin. The upper part of the first transmission linkage and the lower part of the second transmission linkage are slidably engaged with the arc-shaped guide groove via guide posts. The other end of the guide posts is connected to the drive arms, so that the drive arms drive the first transmission linkage. The first transmission rod rotates around the pin shaft along the arc-shaped guide groove, and the second transmission connecting rod slides along the arc-shaped guide groove; the upper part of the second transmission connecting rod is rotatably engaged with the front part of the seat frame bracket, the lower part of the first transmission connecting rod is rotatably connected with the front part of the third transmission connecting rod, the rear part of the third transmission connecting rod is rotatably connected with the lower part of the fourth transmission connecting rod, the upper part of the fourth transmission connecting rod is driven to the leg support assembly, the lower part of the fifth transmission connecting rod is rotatably connected with the middle part of the third transmission connecting rod, and the upper part of the fifth transmission connecting rod is rotatably engaged with the rear part of the seat frame bracket, so that when the drive arm moves, it drives the leg support assembly and the seat frame bracket to move.

2. The easily raised electric sofa support according to claim 1, characterized in that, One end of the second electric push rod is rotatably connected to the transverse support, and the other end of the second electric push rod is rotatably connected to the drive rod, so that the drive rod is moved by the second electric push rod.

3. The easily raised electric sofa support according to claim 2, characterized in that, A third reinforcing rod is fixedly installed between the connecting brackets, and a fourth reinforcing rod is fixedly installed between the mounting plates to support the seat frame assembly; The backrest assembly includes a fifth reinforcing rod, with backrest brackets fixedly mounted at both ends of the fifth reinforcing rod. Each backrest bracket is fixedly mounted with a backrest connecting rod, which is T-shaped. One side of the backrest connecting rod is rotatably connected to the rear end of the seat frame bracket. One end of the first electric push rod is rotatably connected to the fifth reinforcing rod, and the other end of the first electric push rod is rotatably connected to the fourth reinforcing rod, so that the first electric push rod drives the backrest assembly to move.

4. The easily raised electric sofa support according to claim 3, characterized in that, The leg support assembly includes a first leg support link, a second leg support link, a third leg support link, and a fourth leg support link. The rear end of the first leg support link is rotatably connected to the front end of the third leg support link. The rear end of the third leg support link is rotatably connected to the lower front end of the seat frame bracket. The rear end of the fourth leg support link is rotatably connected to the upper front end of the seat frame bracket. The middle part of the fourth leg support link is rotatably connected to the middle part of the first leg support link. The front end of the fourth leg support link is rotatably connected to the rear end of the second leg support link. The front ends of the second leg support link and the first leg support link are rotatably connected to the footrest bracket. The upper part of the fourth transmission link is rotatably connected to the middle part of the third leg support link. The fourth transmission link drives the leg support assembly to extend and retract. A footrest mounting seat is rotatably mounted on the footrest bracket to allow the footrest bracket to be telescopically adjustable.

5. The easily raised electric sofa support according to claim 4, characterized in that, The leg support assembly also includes a leg support bracket, the middle part of which is rotatably connected to the middle part of the first leg support link. The bottom of the leg support bracket is provided with an oblong hole, and the second leg support link is provided with a limiting shaft that is inserted into the oblong hole.

6. The easily raised electric sofa support according to claim 5, characterized in that, A first reinforcing rod and a second reinforcing rod are provided between the first connecting rods to support the first connecting rods; support feet are provided at the bottom of both ends of the first reinforcing rod so that the support feet are placed on the longitudinal support when the seat frame assembly is lowered.

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