An electric sofa leg support telescopic structure

Abstract

This utility model relates to the field of electric sofa technology and discloses an electric sofa leg support telescopic structure, including a base frame and a frame frame. A drive motor is fixedly installed at one end of the base frame near the frame frame. A connecting frame is fixedly installed on the output shaft of the drive motor. A connecting block is fixedly installed at the end of the connecting frame away from the drive motor. A main connecting rod is rotatably installed at the end of the frame frame away from the drive motor. A first connecting rod and a second connecting rod are rotatably installed at the end of the main connecting rod away from the frame frame. A fixing frame and a foot support are provided at the ends of the first and second connecting rods away from the main connecting rod. This electric sofa leg support telescopic structure, through a multi-link design, with the main connecting rod, connecting rod one, connecting rod two, and connecting rod three forming a coordinated support, can distribute the force and avoid jamming caused by single-point load. Furthermore, the first and second connecting rods are distributed in opposite directions to avoid motion interference, which can improve the practicality of the overall telescopic structure.

Description

Technical Field

[0001] This utility model relates to the field of electric sofa technology, specifically to an electric sofa leg support telescopic structure. Background Technology

[0002] Sofas, as a common type of furniture, not only meet people's daily rest needs but also play a vital role in enhancing comfort in home life. With modern people's increasing demands for quality of life, especially in the pursuit of a healthy lifestyle, functional sofas have gradually become a market hotspot. These sofas can meet people's needs in various scenarios, and their extendable leg rests are also a popular improvement trend in the modern market.

[0003] Chinese Invention Patent Publication No. CN120130780A discloses a zero-wall-leaning sofa frame and sofa. The specification of this zero-wall-leaning sofa frame and sofa discloses that the drive assembly drives the leg support assembly to unfold via a telescopic cylinder and a rotating rod, thereby moving the seat frame and linkage assembly. This allows the backrest assembly and leg support assembly to sequentially adjust from a sitting posture to a TV posture and a reclining posture. Throughout the process, the backrest assembly does not extend beyond the end of the bottom frame furthest from the leg support assembly, achieving a zero-wall-leaning design. This significantly improves the convenience and comfort of users adjusting the sofa's posture. However, this zero-wall-leaning sofa frame and sofa does not facilitate coordinated support, making it difficult to distribute force, resulting in single-point load-bearing and a tendency to jam. This causes the telescopic process to become sluggish, affecting the normal use of the overall structure and hindering its widespread adoption. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an electric sofa leg support telescopic structure, which can effectively solve the problem in the prior art that the zero-wall-mounted sofa frame and sofa are not easy to achieve coordinated support, which makes it difficult to distribute the force, resulting in single-point load-bearing, easy jamming, and causing the telescopic process to be stuck, thus affecting the normal use of the overall structure and making it difficult to promote and use.

[0005] The technical solution adopted by this utility model is: an electric sofa leg support telescopic structure, including a base frame and a frame frame. A drive motor is fixedly installed at one end of the base frame near the frame frame. A connecting frame is fixedly installed on the output shaft of the drive motor. A connecting block is fixedly installed at the end of the connecting frame away from the drive motor. A main connecting rod is rotatably installed at the end of the frame frame away from the drive motor. A first connecting rod and a second connecting rod are rotatably installed at the end of the main connecting rod away from the frame frame. A fixing frame and a foot support are provided at the ends of the first connecting rod and the second connecting rod away from the main connecting rod.

[0006] Preferably, a fixing rod is rotatably connected to the end of the connecting block away from the connecting frame, and the end of the fixing rod away from the connecting block is rotatably connected to one end of the skeleton frame.

[0007] With the above technical solution, when the drive motor pushes back, the output shaft drives the connecting frame and connecting block to rotate. The connecting block pushes the fixed rod to rotate around the connection point of the skeleton frame, thereby driving the skeleton frame to unfold forward and providing initial power for the leg support to unfold. Conversely, when the motor reverses, the fixed rod pulls the skeleton frame to retract, realizing the retraction of the leg support.

[0008] Preferably, the end of the main connecting rod away from the second connecting rod is rotatably connected to a connecting frame, and the end of the connecting frame away from the main connecting rod is rotatably mounted with a connecting rod one, which is rotatably connected to the frame.

[0009] With the above technical solution, when the frame is unfolded, the main connecting rod rotates around the connection point. The main connecting rod pushes the connecting rod to rotate around the fulcrum of the frame through the connecting frame, so that the connecting rod extends towards the leg support and assists in pushing the leg support to unfold. Conversely, when the frame is retracted, each connecting rod moves in the opposite direction, pulling the leg support to retract. By dispersing the force through multi-link linkage, deformation caused by excessive load on a single point is avoided, and the extension and retraction process of the leg support is made more stable.

[0010] Preferably, the end of the connecting rod away from the connecting frame has a connecting hole, and the connecting rod is connected to the skeleton frame through the connecting hole.

[0011] Through the above technical solution, the design of connecting rod one allows it to be rotatably connected to the frame through the connecting hole, providing a stable fulcrum for connecting rod one. This improves the stability of connecting rod one during movement, ensures the synchronization of multi-link transmission, and facilitates power transmission to the front end of the leg support when the drive motor pushes back to unfold the leg support, avoiding jamming.

[0012] Preferably, a second connecting rod is rotatably connected to the end of the first connecting rod near the connecting hole, and a third connecting rod is rotatably installed at the end of the second connecting rod away from the first connecting rod, and the third connecting rod is rotatably connected to the frame.

[0013] With the above technical solution, when connecting rod one rotates, connecting rod two drives connecting rod three to rotate around the connection point of the frame, and the three form a triangular support structure, which enhances the rigidity of the frame when the leg support is unfolded and avoids frame deformation caused by the weight of the leg support.

[0014] Preferably, the fixing rod is located at one end of the skeleton frame closer to the connecting frame, and the main connecting rod is located at one end of the skeleton frame away from the connecting frame.

[0015] With the above technical solution, when the drive motor pushes back, the fixed rod drives the front end of the frame to unfold, and at the same time, the main connecting rod drives the leg support component to extend synchronously at the rear end of the frame, so that the leg support unfolds smoothly in the horizontal direction. The front and rear distribution makes the frame evenly stressed, avoiding tilting caused by single-end drive, and ensuring the stability of the relative position of the leg support and the sofa body when the leg support extends and retracts.

[0016] Preferably, the first link and the second link are located on different horizontal planes, and both the first link and the second link are rotatably connected to the fixed frame and the foot support.

[0017] With the above technical solution, when the leg support is pushed back and unfolded by the drive motor, the main connecting rod drives the first connecting rod and the second connecting rod to rotate around different fulcrums of the fixed frame. Because they are on opposite planes, their movement trajectories do not overlap, and they can push the foot support forward in sync. Conversely, when retracting, the opposite plane structure ensures that the two do not obstruct each other when moving in opposite directions, and smoothly pulls the foot support back up.

[0018] Compared with the prior art, this utility model provides an electric sofa leg support telescopic structure, which has the following beneficial effects: 1. The electric sofa leg support telescopic structure, through the design of a multi-link system, with the main link, connecting rod one, connecting rod two, and connecting rod three forming a coordinated support, can distribute the force and avoid jamming caused by single-point load. In addition, the first link and the second link are distributed in opposite directions to avoid motion interference, so that the telescopic process is smooth and can improve the practicality of the overall telescopic structure. 2. The telescopic structure of the electric sofa leg rest, through the design of the drive motor, can unfold the leg rest by cooperating with multiple connections when it retracts. When the drive motor rotates forward, it can fold the leg rest and tilt the upper frame at the same time. This can improve the versatility of the overall structure in use, save costs, and facilitate later maintenance and replacement, making it easy to promote and use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the adjustable planar structure of this utility model; Figure 4 This is a top view schematic diagram of the adjustable structure of this utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .

[0020] The components include: 1. Base frame; 2. Drive motor; 3. Connecting frame; 4. Connecting block; 5. Fixing rod; 6. Skeleton frame; 7. Main connecting rod; 8. Connecting frame; 9. Connecting rod one; 10. Connecting rod two; 11. Connecting hole; 12. Connecting rod three; 13. First connecting rod; 14. Second connecting rod; 15. Fixing frame; 16. Foot support. Detailed Implementation

[0021] 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.

[0022] Example 1: As Figure 1-5 As shown, the present invention provides an electric sofa leg support telescopic structure, including a base frame 1 and a frame frame 6. A drive motor 2 is fixedly installed at one end of the base frame 1 near the frame frame 6. A connecting frame 3 is fixedly installed on the output shaft of the drive motor 2. A connecting block 4 is fixedly installed at the end of the connecting frame 3 away from the drive motor 2. A main connecting rod 7 is rotatably installed at the end of the frame frame 6 away from the drive motor 2. A first connecting rod 13 and a second connecting rod 14 are rotatably installed at the end of the main connecting rod 7 away from the frame frame 6. A fixing frame 15 and a foot support 16 are provided at the ends of the first connecting rod 13 and the second connecting rod 14 away from the main connecting rod 7.

[0023] Specifically, a fixed rod 5 is rotatably connected to the end of the connecting block 4 away from the connecting frame 3. The end of the fixed rod 5 away from the connecting block 4 is rotatably connected to the end of the frame 6. The advantage is that when the drive motor 2 pushes back, the output shaft drives the connecting frame 3 and the connecting block 4 to rotate. The connecting block 4 pushes the fixed rod 5 to rotate around the connection point of the frame 6, thereby driving the frame 6 to unfold forward and providing initial power for the leg support to unfold. Conversely, when the motor reverses, the fixed rod 5 pulls the frame 6 to retract, realizing the retraction of the leg support.

[0024] Specifically, a connecting frame 8 is rotatably connected to the end of the main connecting rod 7 away from the second connecting rod 14. A connecting rod 9 is rotatably installed at the end of the connecting frame 8 away from the main connecting rod 7. The connecting rod 9 is rotatably connected to the frame 6. The advantage is that when the frame 6 is unfolded, it drives the main connecting rod 7 to rotate around the connection point. The main connecting rod 7 pushes the connecting rod 9 to rotate around the fulcrum of the frame 6 through the connecting frame 8, so that the connecting rod 9 extends towards the leg support and assists in pushing the leg support to unfold. Conversely, when the frame is retracted, each connecting rod moves in the opposite direction, pulling the leg support to retract. By distributing the force through multi-link linkage, deformation caused by excessive single-point load is avoided, and the extension and retraction process of the leg support is made more stable.

[0025] Specifically, the end of the connecting rod 9 furthest from the connecting frame 8 has a connecting hole 11. The connecting rod 9 is connected to the frame 6 through the connecting hole 11. The advantage is that the design of the connecting rod 9 allows it to be rotatably connected to the frame 6 through the connecting hole 11, providing a stable fulcrum for the connecting rod 9. This improves the stability of the connecting rod 9 during movement, ensures the synchronization of the multi-link transmission, and facilitates the transmission of power to the front end of the leg support when the drive motor 2 pushes back to unfold the leg support, avoiding jamming.

[0026] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0027] Specifically, a connecting rod 10 is rotatably connected to the end of connecting rod 19 near the connecting hole 11, and a connecting rod 312 is rotatably installed at the end of connecting rod 210 away from connecting rod 19. Connecting rod 312 is rotatably connected to the frame 6. The advantage is that when connecting rod 19 rotates, connecting rod 210 drives connecting rod 312 to rotate around the connection point of the frame 6, and the three form a triangular support structure, which enhances the rigidity of the frame 6 when the leg support is unfolded and avoids frame deformation caused by the weight of the leg support.

[0028] Specifically, the fixing rod 5 is located at the end of the frame 6 near the connecting frame 3, and the main connecting rod 7 is located at the end of the frame 6 away from the connecting frame 3. The advantage is that when the drive motor 2 pushes back, the fixing rod 5 drives the front end of the frame 6 to unfold, and at the same time, the main connecting rod 7 drives the leg support component to extend synchronously at the rear end of the frame 6, so that the leg support unfolds smoothly in the horizontal direction. The front and rear distribution makes the frame 6 bear the force evenly, avoiding tilting caused by single-end drive, and ensuring the stability of the relative position of the leg support and the sofa body when the leg support extends and retracts.

[0029] Specifically, the first link 13 and the second link 14 are located on different horizontal planes. Both the first link 13 and the second link 14 are rotatably connected to the fixed frame 15 and the foot support 16. The advantage is that when the leg support is pushed back by the drive motor 2, the main link 7 drives the first link 13 and the second link 14 to rotate around different fulcrums of the fixed frame 15. Because they are on opposite planes, their movement trajectories do not overlap, and they can synchronously push the foot support 16 forward to unfold. Conversely, when retracting, the opposite plane structure ensures that the two do not obstruct each other when moving in opposite directions, and smoothly pulls the foot support 16 to retract.

[0030] Working principle: When in use, when the drive motor 2 pushes back, the output shaft drives the connecting frame 3 and the connecting block 4 to rotate. The connecting block 4 pushes the fixed rod 5 to rotate around the connection point of the skeleton frame 6, thereby driving the skeleton frame 6 to unfold forward. When the motor reverses, the fixed rod 5 pulls the skeleton frame 6 to retract. When the skeleton frame 6 moves, it drives the main connecting rod 7 to rotate around the connection point. The main connecting rod 7 pushes the connecting rod 9 to rotate around the fulcrum connection hole 11 of the skeleton frame 6 through the connecting frame 8. At the same time, the connecting rod 9 drives the connecting rod 12 to rotate synchronously through the connecting rod 2 10, forming a multi-link collaborative support, transmitting power to the front end of the leg support. The other end of the main connecting rod 7 drives the first connecting rod 13 and the second connecting rod 14. By having the two oppositely distributed, interference is avoided. The two respectively push the fixed frame 15 and the foot support 16 to unfold forward. When retracting, each connecting rod moves in the opposite direction, pulling the foot support 16 to retract. When the drive motor 2 pushes forward, it can lift the upper skeleton frame 6, which can improve the versatility of the drive motor 2 in use.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric sofa leg support telescopic structure, comprising a base frame (1) and a skeleton frame (6), characterized in that: A drive motor (2) is fixedly installed at one end of the base frame (1) near the skeleton frame (6). A connecting frame (3) is fixedly installed on the output shaft of the drive motor (2). A connecting block (4) is fixedly installed at one end of the connecting frame (3) away from the drive motor (2). A main connecting rod (7) is rotatably installed at one end of the skeleton frame (6) away from the drive motor (2). A first connecting rod (13) and a second connecting rod (14) are rotatably installed at one end of the main connecting rod (7) away from the skeleton frame (6). A fixing frame (15) and a foot support (16) are provided at one end of the first connecting rod (13) and the second connecting rod (14) away from the main connecting rod (7).

2. The electric sofa leg supporting and stretching structure according to claim 1, characterized in that: The end of the connecting block (4) away from the connecting frame (3) is rotatably connected to a fixing rod (5), and the end of the fixing rod (5) away from the connecting block (4) is rotatably connected to one end of the skeleton frame (6).

3. The electric sofa leg supporting and stretching structure according to claim 1, characterized in that: The main connecting rod (7) is rotatably connected to a connecting frame (8) at the end away from the second connecting rod (14). A connecting rod (9) is rotatably installed at the end of the connecting frame (8) away from the main connecting rod (7). The connecting rod (9) is rotatably connected to the skeleton frame (6).

4. The electric sofa leg rest telescopic structure according to claim 3, characterized in that: The connecting rod (9) has a connecting hole (11) at one end away from the connecting frame (8), and the connecting rod (9) is connected to the skeleton frame (6) through the connecting hole (11).

5. The electric sofa leg rest telescopic structure according to claim 4, characterized in that: The end of the connecting rod 1 (9) near the connecting hole (11) is rotatably connected to the connecting rod 2 (10), and the end of the connecting rod 2 (10) away from the connecting rod 1 (9) is rotatably connected to the connecting rod 3 (12). The connecting rod 3 (12) is rotatably connected to the skeleton frame (6).

6. The electric sofa leg rest telescopic structure according to claim 2, characterized in that: The fixing rod (5) is located at one end of the skeleton frame (6) near the connecting frame (3), and the main connecting rod (7) is located at one end of the skeleton frame (6) away from the connecting frame (3).

7. The electric sofa leg supporting and stretching structure according to claim 1, characterized in that: The first link (13) and the second link (14) are located on different horizontal planes. Both the first link (13) and the second link (14) are rotatably connected to the fixed frame (15) and the foot support (16).

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