Simple electric sofa extendable frame

Abstract

This utility model discloses a simple electric sofa extension frame, relating to the field of extension frame technology. It includes: a sofa base, an electric push rod, a movable unit, a backrest extension frame, and connecting components. The sofa base includes two sets of sub-frames, a rear crossbar, and a front crossbar. The backrest extension frame is installed on the outer wall of the movable unit. A circular opening is provided at the rear of the sliding groove. A reinforcing rod is installed on the inner wall of the sub-frames. The backrest extension frame includes a connecting arm and a movable arm. A hinge seat is installed on the outer wall of the movable arm. A second limiting groove is provided at the bottom of the movable arm. The connecting components include a fixed platform, a hinge arm, and a second limiting shaft. This utility model, by installing a noise reduction mechanism, installs the sofa backrest and the backrest extension frame. After the electric sofa extension frame is installed at the bottom of the sofa, the movable unit slides simultaneously under the push-pull drive of the electric push rod. During the sliding process, the backrest extension frame is pulled, thereby realizing the conversion between a sofa and a sofa bed.

Description

Technical Field

[0001] This utility model relates to the field of telescopic frame technology, specifically a simple electric sofa telescopic frame. Background Technology

[0002] In recent years, with the improvement of living standards and changes in consumption concepts, the demand for electric sofas has increased significantly as a high-end choice in home decoration. Consumers are paying more and more attention to the comfort and functionality of their homes, and electric sofas, with their convenient conversion functions and comfortable user experience, have become the first choice for many homes and offices. However, many electric sofas on the market currently suffer from problems such as loud noise during operation, unsmooth backrest movement, or malfunctions. Therefore, improvements are needed to address these issues.

[0003] Patent document CN215959113U discloses a telescopic iron frame for an electric sofa, which states that "the telescopic iron frame for an electric sofa includes: a base frame, a driver mounted on the base frame, and telescopic mechanisms respectively mounted on the side frames of the base frame; the telescopic mechanism includes: a sofa seat mounting plate, a leg rest mounting plate, a first linkage assembly, and a second linkage assembly; the sofa seat mounting plate is hinged to the side frames of the base frame via the first linkage assembly; the leg rest mounting plate is mounted on the front of the sofa seat mounting plate via the second linkage assembly. The driver is adapted to drive the second linkage assembly to unfold the leg rest mounting plate and lift the front of the sofa seat mounting plate via the first linkage assembly. This facilitates adjustment of the sofa between sitting, TV-like, and reclining postures."

[0004] However, the telescopic iron frame for an electric sofa in the aforementioned published literature mainly considers the ease of adjusting the sofa to sitting, TV-like, and reclining positions, but does not address the issue of reducing noise during operation or improving operational smoothness.

[0005] In view of this, it is necessary to develop a noise reduction mechanism to reduce operating noise and improve operational smoothness. Utility Model Content

[0006] The purpose of this utility model is to provide a simple electric sofa telescopic frame to solve the technical problems mentioned in the background art of improving the noise reduction and smooth operation of the simple electric sofa telescopic frame.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a simple electric sofa telescopic frame, comprising: a sofa base, wherein the inner wall of the sofa base is provided with a noise reduction mechanism, the noise reduction mechanism being used to reduce noise during operation and improve smoothness of operation;

[0008] The noise reduction mechanism includes an electric push rod, a movable unit, a backrest extension frame, and connectors. The sofa base includes two sets of sub-frames, a rear crossbar, and a front crossbar. The rear crossbar is located between the two sets of sub-frames. The front crossbar is installed on the inner wall of the two sets of sub-frames. Support legs are installed below the bottom of both the rear and front crossbars. The electric push rod is located at the top of the rear and front crossbars. A groove is provided on the outer wall of the upper end of the sub-frame. The movable unit is located on the inner wall of the groove. The backrest extension frame is installed on the outer wall of the movable unit. A circular opening is provided at the rear of the groove. A reinforcing rod is installed on the inner wall of the sub-frame, and the reinforcing rod is located between the upper and lower end of the sub-frame. A cover is installed on the outer wall of the circular opening. The movable unit includes a mounting platform, two sets of pulleys, and a connecting seat body. The two sets of pulleys are located on the outer wall of the back of the mounting platform, and the connecting seat body is located on... On the outer wall of the mounting platform, the outer wall of the connecting seat body is provided with a limiting shaft one. The backrest extension frame includes a connecting arm and a movable arm. The movable arm is located on the outer wall of the connecting arm. A connecting member is installed on the outer wall of the connecting arm. A limiting groove one is provided on the outer wall of the connecting arm, and the limiting groove one is located on the rear curved arm. A curved connecting seat is installed on the outer wall of the connecting arm, and the curved connecting seat is located on the front curved arm. A connecting rod is installed on the outer wall of the movable arm. A connecting hole is provided on the outer wall of the movable arm, and the connecting hole is located below the connecting rod. A hinge seat is installed on the outer wall of the movable arm. A limiting groove two is provided at the bottom of the movable arm, and the limiting groove two is located below the hinge seat. The connecting member includes a fixed platform, a hinge arm component, and a limiting shaft two. The hinge arm component is located on the outer wall of the fixed platform. The limiting shaft two is located on the outer wall of the fixed platform, and the limiting shaft two is positioned above the hinge arm component.

[0009] Preferably, the rear crossbar and the front crossbar are connected to the inner front and rear ends of the two side sub-frames by screws, and the sub-frames are square frames.

[0010] Preferably, the movable unit is fitted onto the sub-frame via pulleys and a circular opening, and the output end of the electric push rod is equipped with a connecting platform, with the mounting platform on the movable unit and the sliding connecting platform on the same horizontal plane and the same straight line.

[0011] Preferably, the connecting arm is a curved profile, the curved connecting seat is used to hinge with the movable arm, the movable arm is sickle-shaped, the connecting rod is used to connect with the sofa backrest, the connecting rod is hinged to the curved connecting seat through a hinge member, and the hinge seat is hinged to the connecting seat body on the movable unit through a hinge member.

[0012] Preferably, the connector is snapped onto the rear crossbar via a fixed platform and fastened to the sofa base with screws, and is hinged to the connecting arm via a hinged arm.

[0013] Preferably, the sliding connecting platform and the mounting platform are fixedly connected to the bottom of the sofa by bolts.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model reduces operating noise and improves smoothness by installing a noise reduction mechanism. First, the electric sofa extension frame is assembled. Then, the sofa base is bolted to the sliding connecting platform. Next, the sofa backrest and backrest extension frame are installed. After the electric sofa extension frame is installed at the bottom of the sofa, the movable unit slides simultaneously under the push-pull drive of the electric push rod. During this sliding process, the backrest extension frame is pulled, causing it to extend and retract under the corresponding force, thus realizing the conversion between a sofa and a sofa bed. The hinged backrest extension frame and the roller-type movable unit are hinged together, allowing the sofa backrest to be driven by the linear motion of the electric push rod to rotate the hinged backrest extension frame, realizing the linkage conversion of "push-pull-flip". At the same time, the synergistic action of the connecting arm and the movable arm keeps the sofa backrest in torque balance during the conversion process, enhancing structural rigidity. The connection process is convenient and reliable, the design is reasonable and the structure is very simple, the assembly process is simple, the work efficiency is high, and it can be mass-produced. It has the advantages of easy operation, stable structure, and high space utilization, and is suitable for the field of multifunctional furniture for home and commercial use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the electric sofa telescopic frame of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the electric sofa telescopic frame of this utility model;

[0018] Figure 3 This is a schematic diagram of the active unit structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting arm structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the movable arm structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the connecting component structure of this utility model.

[0022] In the diagram: 1. Sofa base; 11. Subframe; 111. Slide groove; 112. Circular opening; 113. Reinforcing rod; 114. Cover; 12. Rear crossbar; 13. Front crossbar; 14. Support leg; 2. Electric push rod; 21. Connecting platform; 3. Movable unit; 31. Mounting platform; 32. Pulley; 33. Connecting seat body; 330. Limiting shaft one; 4. Backrest extension frame; 41. Connecting arm; 410. Limiting groove one; 411. Curved connecting seat; 42. Movable arm; 420. Connecting rod; 421. Connecting hole; 422. Hinge seat; 423. Limiting groove two; 5. Connecting piece; 51. Fixed platform; 52. Hinge arm piece; 53. Limiting shaft two. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A simple electric telescopic sofa frame includes: a sofa base 1, with a noise reduction mechanism on the inner wall of the sofa base 1 to reduce noise during operation and improve smoothness of operation. The noise reduction mechanism includes an electric push rod 2, a movable unit 3, a backrest extension frame 4, and a connector 5. The sofa base 1 includes two sets of sub-frames 11, a rear crossbar 12, and a front crossbar 13. The rear crossbar 12 is located between the two sets of sub-frames 11. The front crossbar 13 is installed on the inner wall of the two sets of sub-frames 11. Support legs 14 are installed at the bottom of both the rear crossbar 12 and the front crossbar 13. The electric push rod 2 is located at the top of the rear crossbar 12 and the front crossbar 13. The upper end of the sub-frame 11 has a groove 111 on its outer wall. The movable unit 3 is located on the inner wall of the groove 111. A backrest tension frame 4 is installed on the wall. A circular opening 112 is provided behind the slide groove 111. A reinforcing rod 113 is installed on the inner wall of the sub-frame 11, and the reinforcing rod 113 is located between the upper and lower rods of the sub-frame 11. A cover 114 is installed on the outer wall of the circular opening 112. The movable unit 3 includes a mounting platform 31, two sets of pulleys 32, and a connecting seat body 33. The two sets of pulleys 32 are located on the outer wall of the back of the mounting platform 31. The connecting seat body 33 is located on the outer wall of the mounting platform 31. A limiting shaft 330 is provided on the outer wall of the connecting seat body 33. The backrest tension frame 4 includes a connecting arm 41 and a movable arm 42. The movable arm 42 is located on the outer wall of the connecting arm 41. A connector 5 is installed on the outer wall of the connecting arm 41. A limiting shaft 5 is provided on the outer wall of the connecting arm 41. The first limiting groove 410 is located on the rear crank arm. A curved connecting seat 411 is installed on the outer wall of the connecting arm 41, and the curved connecting seat 411 is located on the front crank arm. A connecting rod 420 is installed on the outer wall of the movable arm 42. A connecting hole 421 is provided on the outer wall of the movable arm 42, and the connecting hole 421 is located below the connecting rod 420. A hinge seat 422 is installed on the outer wall of the movable arm 42. A second limiting groove 423 is provided at the bottom of the movable arm 42, and the second limiting groove 423 is located below the hinge seat 422. The connecting member 5 includes a fixed platform 51, a hinge arm 52, and a second limiting shaft 53. The hinge arm 52 is located on the outer wall of the fixed platform 51, and the second limiting shaft 53 is located on the outer wall of the fixed platform 51 and is positioned on the hinge arm. Above component 52, the rear crossbar 12 and the front crossbar 13 are respectively connected to the inner front and rear ends of the sub-frames 11 on both sides by screws. The sub-frames 11 are square frames. The movable unit 3 is fitted onto the sub-frames 11 through the circular opening 112 via pulleys 32. The output end of the electric push rod 2 is equipped with a connecting platform 21, and the mounting platform 31 on the movable unit 3 and the sliding connecting platform 21 are on the same horizontal plane and the same straight line. The connecting arm 41 is a curved profile, and the curved connecting seat 411 is used to hinge with the movable arm 42. The movable arm 42 is sickle-shaped. The connecting rod 420 is used to connect with the sofa backrest. The connecting rod 420 is hinged to the curved connecting seat 411 through a hinge. The hinge seat 422 is hinged to the connecting seat body 33 on the movable unit 3 through a hinge.Connector 5 is snapped onto the rear crossbar 12 via the fixed platform 51 and fastened to the sofa base 1 with screws. It is also hinged to the connecting arm 41 via the hinge arm 52. The sliding connecting platform 21 and the mounting platform 31 are fixedly connected to the bottom of the sofa with bolts. First, the electric sofa extension frame is assembled. Then, the sofa base is fixed to the sliding connecting platform 21 with bolts. Next, the sofa backrest and backrest extension frame 4 are installed. After the sofa bottom and electric sofa extension frame are installed, the movable unit 3 slides simultaneously under the push-pull drive of the electric push rod 2. During the sliding process, the backrest extension frame 4 is simultaneously pulled, causing it to move under the corresponding force. The sofa features a telescopic mechanism, allowing it to transform into a sofa bed. The hinged backrest extension frame 4 and the wheel-type movable unit 3 are connected, enabling the sofa backrest to rotate via the linear motion of the electric push rod 2, thus achieving a "push-pull-flip" linkage. Simultaneously, the synergistic action of the connecting arm 41 and the movable arm 42 ensures torque balance during the transformation, enhancing structural rigidity. The connection process is convenient and reliable, the design is reasonable and the structure is very simple, the assembly process is simple, and the work efficiency is high, allowing for mass production. It boasts advantages such as easy operation, stable structure, and high space utilization, making it suitable for both home and commercial multifunctional furniture applications.

[0027] The working principle is as follows: First, the electric sofa extension frame is assembled. Then, the sofa base is fixed to the sliding connecting platform 21 with bolts. Next, the sofa backrest and backrest extension frame 4 are installed. After the electric sofa extension frame is installed at the bottom of the sofa, the movable unit 3 slides simultaneously under the push-pull drive of the electric push rod 2. During the sliding process, the backrest extension frame 4 is pulled, causing it to extend and retract under the action of a corresponding force, thereby realizing the conversion between sofa and sofa bed. Through the hinged connection between the hinged backrest extension frame 4 and the wheel-sliding movable unit 3, the sofa backrest can be driven by the linear motion of the electric push rod 2 to drive the hinged rotation of the backrest extension frame 4, realizing the linkage conversion of "push-pull-flip". At the same time, the synergistic action of the connecting arm 41 and the movable arm 42 keeps the sofa backrest in torque balance during the conversion process, enhancing structural rigidity. The connection process is convenient and reliable, the design is reasonable and the structure is very simple. The assembly process is simple, the work efficiency is high, and it can be mass-produced. It has the advantages of easy operation, stable structure, and high space utilization, and is suitable for the field of multifunctional furniture for home and commercial use.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A simple electric telescopic sofa frame, characterized in that, Includes: a sofa base (1), the inner wall of which is provided with a noise reduction mechanism, the noise reduction mechanism being used to reduce noise during operation and improve work smoothness; The noise reduction mechanism includes an electric push rod (2), a movable unit (3), a backrest extension frame (4), and a connector (5). The sofa base (1) includes two sets of sub-frames (11), a rear crossbar (12), and a front crossbar (13). The rear crossbar (12) is located between the two sets of sub-frames (11). The front crossbar (13) is installed on the inner wall of the two sets of sub-frames (11). Support legs (14) are installed below the bottom of the rear crossbar (12) and the front crossbar (13). The electric push rod (2) is located at the top of the rear crossbar (12) and the front crossbar (13). The upper end of the sub-frame (11) has a groove (111) on its outer wall. The movable unit (3) The movable unit (3) is located on the inner wall of the slide groove (111), and a backrest tension frame (4) is installed on the outer wall of the movable unit (3). A circular opening (112) is provided at the rear of the slide groove (111). A reinforcing rod (113) is installed on the inner wall of the sub-frame (11), and the reinforcing rod (113) is located between the upper and lower rods of the sub-frame (11). A cover (114) is installed on the outer wall of the circular opening (112). The movable unit (3) includes a mounting platform (31), two sets of pulleys (32) and a connecting seat body (33). The two sets of pulleys (32) are located on the outer wall of the back of the mounting platform (31), and the connecting seat body (33) is located on the mounting platform. (31) The outer wall of the connecting seat body (33) is provided with a limiting shaft (330). The backrest stretching frame (4) includes a connecting arm (41) and a movable arm (42). The movable arm (42) is located on the outer wall of the connecting arm (41). A connector (5) is installed on the outer wall of the connecting arm (41). A limiting groove (410) is provided on the outer wall of the connecting arm (41), and the limiting groove (410) is located on the rear curved arm. A curved connecting seat (411) is installed on the outer wall of the connecting arm (41), and the curved connecting seat (411) is located on the front curved arm. A connecting rod (420) is installed on the outer wall of the movable arm (42). The outer wall of the boom (42) is provided with a connecting hole (421), and the connecting hole (421) is located below the connecting rod (420). The outer wall of the boom (42) is equipped with a hinge seat (422). The bottom of the boom (42) is provided with a limiting groove (423), and the limiting groove (423) is located below the hinge seat (422). The connecting member (5) includes a fixed platform (51), a hinge arm (52) and a limiting shaft (53). The hinge arm (52) is located on the outer wall of the fixed platform (51), and the limiting shaft (53) is located on the outer wall of the fixed platform (51) and is positioned above the hinge arm (52).

2. The simple electric sofa telescopic frame according to claim 1, characterized in that: The rear crossbar (12) and the front crossbar (13) are respectively connected to the inner front and rear ends of the two side sub-frames (11) by screws. The sub-frames (11) are square frames.

3. The simple electric sofa telescopic frame according to claim 1, characterized in that: The movable unit (3) is mounted on the sub-frame (11) through a circular opening (112) via pulleys (32). The output end of the electric push rod (2) is equipped with a connecting platform (21), and the mounting platform (31) on the movable unit (3) and the sliding connecting platform (21) are on the same horizontal plane and the same straight line.

4. The simple electric sofa telescopic frame according to claim 1, characterized in that: The connecting arm (41) is a curved profile, the curved connecting seat (411) is used to hinge with the movable arm (42), the movable arm (42) is sickle-shaped, the connecting rod (420) is used to connect with the sofa back, the connecting rod (420) is hinged with the curved connecting seat (411) through a hinge, and the hinge seat (422) is hinged with the connecting seat body (33) on the movable unit (3) through a hinge.

5. The simple electric sofa telescopic frame according to claim 1, characterized in that: The connector (5) is snapped onto the rear crossbar (12) via a fixed platform (51) and fastened to the sofa base (1) with screws, and is hinged to the connecting arm (41) via a hinge arm (52).

6. The simple electric sofa telescopic frame according to claim 3, characterized in that: The sliding connecting platform (21) and the mounting platform (31) are fixedly connected to the bottom of the sofa by bolts.

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