Driving structure, functional iron stand and movable sofa with same

Abstract

This utility model provides a drive structure, a functional iron frame, and a movable sofa having the same. The drive structure is used for the functional iron frame, which includes an armrest support and a seat frame support movably connected thereto. The seat frame support has a footrest structure and a backrest structure at both ends, which are respectively extendable or retractable. The drive structure includes a drive body and a transmission component. The drive body is connected to the armrest support and located near the backrest structure. At least a portion of the drive body is movably arranged in a horizontal direction. The transmission component is connected to at least a portion of the drive body and the footrest structure, so that the at least a portion of the drive body drives the transmission component to move, allowing the functional iron frame to switch between sitting, relaxing, and reclining positions. The lowest point of the transmission component is higher than the lowest point of the drive body. This utility model solves the problem in the prior art where the push rod motor of the sofa iron frame is too close to the seat frame surface, resulting in a poor user experience.

Description

Technical Field

[0001] This utility model relates to the field of intelligent furniture technology, specifically to a drive structure, a functional iron frame, and a movable sofa having the same. Background Technology

[0002] Currently, movable sofas are gaining popularity in the smart home field. They can intelligently adjust the seat frame, backrest, and footrest through linear actuators to adapt to different user needs, such as sitting, TV viewing, and reclining postures. In this field, push-rod motors are widely used in the drive mechanisms of sofa frames due to their simple structure and stable thrust, enabling the extension and folding of various parts of the sofa.

[0003] However, in existing technology, the push rod motor is tilted, with its motor end facing upwards, and connected to the footrest mechanism or headrest side to drive the suspension frame to switch between different postures. Because the sofa frame is designed to be compact and thin, meaning the distance from the top of the seat frame to the bottom of the armrest mounting plate is small, the distance between the push rod motor and the seat frame is too close. This means that after the sofa is assembled, the user can easily touch the push rod motor during use, especially when sitting down. This not only affects user comfort but may also damage the push rod motor, reducing its lifespan and reliability, and negatively impacting the user experience. Utility Model Content

[0004] The main purpose of this utility model is to provide a drive structure, a functional iron frame, and a movable sofa with the same, so as to solve the problem that the push rod motor of the sofa iron frame is too close to the seat frame surface in the prior art, resulting in a poor user experience.

[0005] To achieve the above objectives, according to one aspect of the present invention, a drive structure is provided for a functional steel frame. The functional steel frame includes an armrest support and a seat frame support movably connected to the armrest support. The seat frame support has a footrest structure and a backrest structure that are respectively extendable or retractable at both ends, allowing the functional steel frame to be positioned in a sitting, relaxing, and reclining state. The drive structure includes: a drive body connected to the armrest support and located near the backrest structure, at least a portion of the drive body being movably arranged in a horizontal direction; and a transmission component connected to at least a portion of the drive body and the footrest structure, so as to drive the transmission component to move through at least a portion of the drive body, thereby switching the functional steel frame between the sitting, relaxing, and reclining states; wherein the lowest point of the transmission component is higher than the lowest point of the drive body.

[0006] Furthermore, the driving body includes: a guide rail extending horizontally; a guide member slidably mounted on the guide rail; and two ends of the transmission component connected to the guide member and the foot pedal structure, respectively; and a motor component drivingly connected to the guide member to drive the guide member to move the transmission component along the extension direction of the guide rail.

[0007] Furthermore, the transmission component includes: a transmission rod, one end of which is hinged to at least a portion of the drive body; and a first mounting rod, the other end of which is hinged to the first mounting rod, one end of which is connected to the foot pedal structure.

[0008] Furthermore, there is at least one transmission rod, and the transmission component further includes: a baffle plate connected to at least one transmission rod or a first mounting rod; the seat frame bracket has a support surface for supporting the user, and the top surface of the baffle plate is disposed near the support surface for supporting the user.

[0009] According to one aspect of the present invention, another driving structure is provided for a functional steel frame. The functional steel frame includes an armrest support and a seat frame support movably connected to the armrest support. The seat frame support has a footrest structure and a backrest structure that are respectively extendable or retractable at both ends, allowing the functional steel frame to be positioned in a sitting, relaxing, and reclining state. The driving structure includes: a driving component connected to the armrest support and located near the backrest structure; and a movable component connected to the driving end of the driving component and the footrest structure, respectively. At least a portion of the movable component is movably arranged in an inclined horizontal direction, so as to drive the movable component to move, thereby switching the functional steel frame between the sitting, relaxing, and reclining states. The driving component and the movable component extend in a straight line in an inclined horizontal direction, and the driving component is located below the movable component.

[0010] Furthermore, the movable component includes: a push rod connected to the drive end of the drive component, the end of the push rod away from the drive component being telescopically disposed; and a second mounting rod, the end of the push rod away from the drive component being hinged to the second mounting rod, one end of the second mounting rod being connected to the foot pedal structure.

[0011] According to another aspect of this utility model, a functional iron frame is provided, comprising: an armrest support fixedly disposed relative to the ground; a seat frame support and a suspension structure, wherein the seat frame support is movably connected to the armrest support via the suspension structure; a footrest structure and a backrest structure, respectively extended or retractable and correspondingly disposed at both ends of the seat frame support, so that the functional iron frame can be in a sitting position, a leisure position, and a reclining position; and the aforementioned driving structure is used to drive the functional iron frame to switch between the sitting position, the leisure position, and the reclining position.

[0012] Furthermore, the suspension structure includes: a movable member, which is movably connected to the armrest bracket via a first connecting component and a second connecting component, and movably connected to the seat frame bracket via a third connecting component, so that the seat frame bracket is movably disposed relative to the armrest bracket.

[0013] Furthermore, the first connecting assembly includes: a first connecting rod, the first end of which is hinged to the handrail bracket; a second connecting rod, the first end of which is hinged to the movable member, and the second end of which is hinged to the second end of the first connecting rod; and a third connecting rod, the first end of which is hinged to the middle of the second connecting rod, and the second end of which is hinged to the handrail bracket.

[0014] Furthermore, the first connecting assembly includes: a first connecting rod, the first end of which is hinged to a movable member; a second connecting rod, the first end of which is hinged to a movable member; and a third connecting rod, the first end of which is hinged to the second end of the first connecting rod, the second end of which is hinged to the middle portion of the third connecting rod, and the second end of which is hinged to a handrail bracket.

[0015] Furthermore, the second connecting assembly includes: a fourth connecting rod, the first end of which is hinged to the handrail bracket; a fifth connecting rod, spaced apart from the fourth connecting rod, the first end of which is hinged to the handrail bracket; and a sixth connecting rod, the first end of which is hinged to the second end of the fourth connecting rod, the second end of which is hinged to the middle of the sixth connecting rod, and the second end of which is hinged to the movable part.

[0016] Furthermore, the second connecting assembly includes: a fourth connecting rod, the first end of which is hinged to the handrail bracket; a fifth connecting rod, the first end of which is hinged to the middle of the fourth connecting rod, and the second end of which is hinged to the movable member; and a sixth connecting rod, the first end of which is hinged to the second end of the fourth connecting rod, and the second end of which is hinged to the movable member.

[0017] Furthermore, the third connecting assembly includes: a seventh connecting rod, the first end of which is hinged to the movable member, and the second end of which is hinged to the seat frame support; and an eighth connecting rod, spaced apart from the seventh connecting rod, the first end of which is hinged to the movable member, and the second end of which is hinged to the seat frame support.

[0018] Further, the foot pedal structure includes: a first linkage group and a second linkage group. The first linkage group includes a first link, a second link, a third link, and a fourth link that are hinged sequentially. The second linkage group includes a fifth link and a sixth link that are hinged. The middle part of the second link is hinged to the middle part of the fifth link, and the middle part of the third link is hinged to the middle part of the sixth link. The first link and the fifth link are respectively hinged to the seat frame support. At least a portion of the drive structure can be selectively connected to either the first linkage group or the second linkage group. A first foot rest and a second foot rest are also included. The end of the sixth link away from the fifth link is hinged to the first end of the second foot rest. The first foot rest includes a hinged first segment and a second segment. The second end of the second foot rest is hinged to the first segment. The end of the fourth link away from the third link is hinged to the second segment. The third end of the second foot rest is hinged to the middle part of the fourth link. The first segment and the second segment are arranged at an angle.

[0019] Furthermore, the backrest structure includes: a backrest member, which is movably disposed; a seventh link, the first end of which is hinged to the backrest member; an eighth link, the first end of which is hinged to the backrest member; and a linkage member, which is provided with a first hinge point, a second hinge point, a third hinge point, and a fourth hinge point at intervals. The linkage member is hinged to the seat frame support through the first hinge point, to the second end of the seventh link through the second hinge point, to the second end of the eighth link through the third hinge point, and to the armrest support through the fourth hinge point.

[0020] Furthermore, using the plane supporting the foundation as a reference plane, when the functional iron frame switches from a sitting position to a lying position, the hinge point between the backrest and the seventh link or the hinge point with the eighth link moves a preset distance A in the horizontal direction relative to the reference plane. The preset distance A is 228mm to 346mm.

[0021] Furthermore, using the seat frame as a reference, when the functional iron frame switches from a sitting position to a reclining position, the hinge point between the backrest and the seventh link or the hinge point between the backrest and the eighth link moves a preset distance B relative to the reference. The preset distance B is 60mm to 100mm.

[0022] Furthermore, the distance S between the lowest point of the armrest support and the supporting foundation is in the range of 11cm≤S≤17cm; wherein, the seat frame support, foot pedal structure, backrest structure and drive structure are respectively set above the armrest support.

[0023] According to another aspect of the present invention, a movable sofa is provided, including the aforementioned functional iron frame.

[0024] This invention provides a driving structure for a functional steel frame. The functional steel frame includes an armrest support and a seat frame support movably connected to the armrest support. The seat frame support has a footrest structure and a backrest structure that are extendable or retractable at both ends, allowing the functional steel frame to be positioned in a sitting, relaxing, and reclining state. The driving structure includes a driving body and a transmission component. The driving body is connected to the armrest support and located near the backrest structure. At least a portion of the driving body is movably arranged in a horizontal direction. The transmission component is connected to at least a portion of the driving body and the footrest structure, respectively, so that the at least a portion of the driving body drives the transmission component to move, allowing the functional steel frame to switch between the sitting, relaxing, and reclining states. The lowest point of the transmission component is higher than the lowest point of the driving body.

[0025] The technical solution of this utility model involves a drive body moving horizontally, which transmits driving force from the drive body to the transmission component, causing the foot pedal structure to extend or retract. Compared to the traditional push-rod motor configuration, this is not a simple linear push-pull. In this application, the drive body always moves horizontally, and the lowest point of the transmission component is always higher than the lowest point of the drive body. Therefore, when the position of the functional frame changes, the transmission component indirectly drives the foot pedal structure to move. The drive body or its extension will never get too close to the seat frame surface, or even collide with it, thus avoiding the safety hazard of the user potentially touching the drive body during use. This solves the problem in the prior art where the push-rod motor of the sofa frame is too close to the seat frame surface, resulting in a poor user experience. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0027] Figure 1 A schematic diagram of the overall structure from a first perspective, provided by an embodiment of the functional iron frame according to the present invention, in a seated position, is shown.

[0028] Figure 2 A schematic diagram of the overall structure from a second perspective, provided by an embodiment of the functional iron frame according to the present invention, in a seated position, is shown.

[0029] Figure 3 A schematic diagram of the overall structure from a first perspective, provided by an embodiment of the functional iron frame according to the present invention, in a leisure posture, is shown.

[0030] Figure 4A schematic diagram of the overall structure from a second perspective, provided by an embodiment of the functional iron frame according to the present invention, in a leisure posture, is shown.

[0031] Figure 5 A schematic diagram of the structure of a second embodiment of the first connecting component in a leisure posture, provided by an embodiment of the functional iron frame according to the present invention, is shown.

[0032] Figure 6 A schematic diagram of the overall structure from a first perspective, provided by an embodiment of the functional iron frame according to the present invention, in a lying position;

[0033] Figure 7 A schematic diagram of the overall structure from a second perspective, provided by an embodiment of the functional iron frame according to the present invention, in a lying position, is shown.

[0034] Figure 8 A schematic diagram of the overall structure of the drive structure in a seated position is shown, according to an embodiment of the functional iron frame of the present invention.

[0035] Figure 9 A schematic diagram of a second embodiment of the first connecting component in a lying position, provided by an embodiment of the functional iron frame of the present invention, is shown.

[0036] Figure 10 A schematic diagram of the structure of a third embodiment of the first connecting component in a lying position, provided by an embodiment of the functional iron frame of the present invention, is shown.

[0037] Figure 11 The diagram shows a structural comparison of the functional iron frame provided according to an embodiment of the present invention in three different positions.

[0038] Figure 12 The diagram illustrates the structural change of the backrest structure according to an embodiment of the functional iron frame of this utility model, from a leisure posture to a reclining posture.

[0039] The above figures include the following reference numerals:

[0040] 10. Handrail bracket; 11. Handrail main board; 12. Handrail mounting plate; 13. Fixing bracket; 130. Fixing rod;

[0041] 20. Seat frame support;

[0042] 30. Suspension structure; 31. Moving part; 32. First connecting assembly; 320. First sliding roller; 321. First guide rail; 322. First connecting rod; 323. Second connecting rod; 324. Third connecting rod; 33. Second connecting assembly; 330. Fourth connecting rod; 331. Fifth connecting rod; 332. Sixth connecting rod; 34. Third connecting assembly; 340. Seventh connecting rod; 341. Eighth connecting rod; 342. Ninth connecting rod; 343. First limiting member;

[0043] 40. Foot pedal structure; 41. First link; 42. Second link; 43. Third link; 44. Fourth link; 45. Fifth link; 46. Sixth link; 47. First foot rest; 470. First section; 471. Second section; 48. Second foot rest; 49. Second limiting component;

[0044] 50. Backrest structure; 51. Backrest component; 52. Seventh link; 53. Eighth link; 54. Linkage component; 540. First hinge point; 541. Second hinge point; 542. Third hinge point; 543. Fourth hinge point; 55. Ninth link; 56. Indirect link;

[0045] 60. Drive structure; 61. Drive body; 610. Guide rail; 611. Guide component; 612. Motor component; 62. Transmission component; 620. Transmission rod; 621. First mounting rod; 622. Baffle plate; 63. Drive component; 64. Movable component; 640. Push rod; 641. Second mounting rod. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] To address the problem of poor user experience caused by the proximity of the push rod motor to the seat frame in existing sofa frames, this invention provides a drive structure, a functional frame, and a movable sofa incorporating these features.

[0048] Please refer to Figures 1 to 12As shown, according to one aspect of the present invention, a driving structure is provided for a functional iron frame. The functional iron frame includes an armrest support 10 and a seat frame support 20 movably connected to the armrest support 10. The seat frame support 20 has a footrest structure 40 and a backrest structure 50 respectively, which are extendable or retractable at both ends, allowing the functional iron frame to be in a sitting, relaxing, and reclining position. The driving structure 60 includes a driving body 61 and a transmission component 62. The driving body 61 is connected to the armrest support 10 and located near the backrest structure 50. At least a portion of the driving body 61 is movably arranged in a horizontal direction. The transmission component 62 is connected to at least a portion of the driving body 61 and the footrest structure 40, respectively, so that the driving body 61 drives the transmission component 62 to move, allowing the functional iron frame to switch between the sitting, relaxing, and reclining positions. The lowest point of the transmission component 62 is higher than the lowest point of the driving body 61.

[0049] The technical solution applied to this utility model involves driving the main body 61 to move horizontally, causing the transmission component 62 to transmit the driving force from the main body 61 to drive the foot pedal structure 40 to extend or retract. Compared to the traditional push-rod motor configuration, this is not a simple linear push-pull. In this application, the main body 61 always moves horizontally, and the lowest point of the transmission component 62 is always higher than the lowest point of the main body 61. Therefore, when the position of the functional frame changes, the transmission component 62 indirectly drives the foot pedal structure 40 to move. The main body 61 or its extension will never get too close to the seat frame surface, or even collide with it, thus avoiding the safety hazard of the user potentially touching the main body 61 during use. This solves the problem in the prior art where the push-rod motor of the sofa frame is too close to the seat frame surface, resulting in a poor user experience.

[0050] In this embodiment, the driving body 61 includes a guide rail 610, a guide member 611, and a motor component 612. The guide rail 610 extends horizontally. The guide member 611 is slidably mounted on the guide rail 610. Both ends of the transmission component 62 are connected to the guide member 611 and the foot pedal structure 40, respectively. The motor component 612 is drivenly connected to the guide member 611 to drive the guide member 611 to move the transmission component 62 along the extension direction of the guide rail 610. The guide member 611 is a slider.

[0051] By using the guide rail 610 as the movement track of the guide member 611, the guide member 611 can slide smoothly in the horizontal direction. Under the power of the guide member 611, the transmission component 62 drives the foot pedal structure 40 to extend or retract smoothly and steadily. This ensures that after the functional frame is switched to any position, the motor component 612 will never approach the seat frame surface during use, preventing the user from easily touching the drive body 61 when sitting down, thus avoiding the risk of injury and improving the comfort and reliability of the sofa frame operation. In this application, the motor component 612 can be selectively set at both ends of the guide rail 610 to drive the guide member 611 to move along the extension direction of the guide rail 610.

[0052] In this embodiment, the transmission component 62 includes a transmission rod 620 and a first mounting rod 621; one end of the transmission rod 620 is hinged to at least a portion of the drive body 61; the first mounting rod 621 extends horizontally and is arranged perpendicular to the transmission rod 620, the other end of the transmission rod 620 is hinged to the first mounting rod 621, and one end of the first mounting rod 621 is connected to the foot pedal structure 40.

[0053] In this way, the guide rail 610 provides a stable trajectory for linear drive. The guide member 611 slides along the guide rail 610. Under the action of the two transmission rods 620 and the first mounting rod 621, it is ensured that the linear driving force of the drive body 61 in the horizontal direction can be accurately transmitted to the foot pedal structure 40, thereby smoothly driving the foot pedal structure 40 to perform extension and retraction movements, so that the functional iron frame can switch between sitting, TV (leisure) and reclining positions. Compared with the traditional push rod motor design, the transmission component 62 in this application avoids the safety problem of the user not touching the drive body 61 during use after the position of the functional iron frame changes, greatly improving the user experience.

[0054] Specifically, there is at least one transmission rod 620, and the transmission component 62 also includes a baffle plate 622, which is connected to at least one transmission rod 620 or a first mounting rod 621. The seat frame bracket 20 has a support surface for supporting the user, and the top surface of the baffle plate 622 is positioned close to the support surface to support the user. With this configuration, when the functional frame is in a seated position, the baffle plate 622 is located at the highest point of the transmission component 62 and contacts the support surface on the seat frame bracket 20. This provides additional support and stability to the user when seated on the support surface, and also serves to shield the two transmission rods 620, protecting the internal transmission component 62 from external interference and reducing the risk of damage caused by external forces acting on the transmission component 62, thereby extending the service life of the drive structure 60.

[0055] Optionally, in the first embodiment of the baffle plate 622, the baffle plate 622 is connected to at least one transmission rod 620; wherein there are two transmission rods 620, and the baffle plate 622 is fixed on the two transmission rods 620 respectively.

[0056] Optionally, in the second embodiment of the shield 622, the shield 622 is connected to the first mounting rod 621; wherein, one end of the shield 622 is hinged to the first mounting rod 621, and the other end of the shield 622 is slidably connected to at least one transmission rod 620. When the drive structure 60 drives the functional frame to switch from a seated position to a relaxed position, one end of the shield 622 rotates relative to the first mounting rod 621, while the other end of the shield 622 slides along the extension direction of the transmission rod 620, so that the shield 622 is located at the highest point of the transmission component 62 and contacts the support surface on the seat frame bracket 20, thereby providing additional support for the user.

[0057] According to one aspect of the present invention, another driving structure is provided for a functional steel frame. The functional steel frame includes an armrest support 10 and a seat frame support 20 movably connected to the armrest support 10. The seat frame support 20 has a footrest structure 40 and a backrest structure 50 respectively, which are extendable or retractable at both ends, allowing the functional steel frame to be positioned in a sitting, relaxing, and reclining state. The driving structure 60 includes a driving component 63 and a movable component 64. The driving component 63 is connected to the armrest support 10 and located near the backrest structure 50, driving... The drive end of component 63 is movably arranged in an inclined horizontal direction; the movable component 64 is connected to the drive end of drive component 63 and foot pedal structure 40 respectively, and at least a portion of the movable component 64 is movably arranged in an inclined horizontal direction so as to drive the movable component 64 to move through drive component 63 so as to switch the functional iron frame between sitting, leisure and reclining positions; wherein drive component 63 and movable component 64 extend in a straight line in an inclined horizontal direction, and drive component 63 is located below movable component 64.

[0058] In this embodiment, the driving component is a conventional push rod motor. Conventional motors are positioned at the top and connected to one side of the footrest structure 40 or backrest structure 50 to drive the iron frame of the suspension structure 30 to switch between different positions. However, this results in the motor end of the push rod motor being too close to the seat frame surface. This makes it easy for the user to touch the motor end during use, especially when sitting down, after the sofa is assembled in its final form. This not only affects user comfort but may also damage the push rod motor, reducing its lifespan and reliability. In this embodiment, the motor end of the push rod motor is positioned at the bottom and connected to one side of the footrest structure 40 or backrest structure 50 via a movable component 64. This solves the problem of poor user experience caused by the push rod motor of the sofa iron frame being too close to the seat frame surface in the prior art.

[0059] Specifically, the movable component 64 includes a push rod 640 and a second mounting rod 641. The push rod 640 is connected to the drive end of the drive component 63, and the end of the push rod 640 away from the drive component 63 is telescopically mounted. The second mounting rod 641 extends horizontally and is perpendicular to the push rod 640. The end of the push rod 640 away from the drive component 63 is hinged to the second mounting rod 641, and one end of the second mounting rod 641 is connected to the foot pedal structure 40. This allows the linear movement of the drive component 63 to be converted into the telescopic movement of the push rod 640, and further into changes in the angle and position of the foot pedal structure 40. This ensures smooth and controllable movement of the foot pedal structure 40 when the functional frame changes between sitting, TV, and reclining positions, reducing sudden changes or jamming during transitions and improving user comfort. Furthermore, when the drive component 63 drives the movable component 64 to extend or retract the foot pedal structure 40, it will never get too close to the seat frame surface or even collide with it, thus avoiding the safety hazard that the user may touch the drive component 63 during use.

[0060] Optionally, in this embodiment of the drive structure 60, the shield 622 may be connected to the second mounting rod 641. Similarly, when the drive structure 60 drives the functional frame to switch from a seated position to a relaxed position, the shield 622 is always located at the highest point of the transmission component 62 and in contact with the support surface on the seat frame bracket 20, so as to provide additional support for the user.

[0061] According to another aspect of the present invention, a functional iron frame is provided, including an armrest support 10, a seat frame support 20, a suspension structure 30, a footrest structure 40, a backrest structure 50, and the aforementioned drive structure 60, all fixedly disposed relative to the ground. The seat frame support 20 is movably connected to the armrest support 10 via the suspension structure 30. The footrest structure 40 and the backrest structure 50 are respectively extended or retractable and correspondingly disposed at both ends of the seat frame support 20, so that the functional iron frame can be in a sitting position, a leisure position, and a reclining position. The drive structure 60 drives the functional iron frame to switch between the sitting position, the leisure position, and the reclining position.

[0062] Optionally, when the functional iron frame of this application is a floor-standing type, the seat frame support 20 is directly supported on the ground by an iron frame mechanism with legs. This design is suitable for various types of armrest supports 10, whether fixed or adjustable, and can perfectly match the iron frame structure, enhancing the versatility of the seat design and the flexibility of its layout. Furthermore, the floor-standing iron frame, by adding multi-point support, can more evenly distribute the weight of the sofa and the pressure applied by the user, reducing the risk of localized overload. Especially when the sofa is in a reclining position, the multi-point support design ensures the stability of the entire seat structure, improving the reliability and safety of long-term use.

[0063] Optionally, when the functional iron frame of this application is in the form of floor-standing armrests, the armrest support 10 directly contacts the ground, forming a stable support point. This not only increases the overall stability of the sofa but also ensures that the armrests will not sway or shift unnecessarily when changing positions. Especially when transitioning from a sitting to a reclining position, users can confidently lean against the armrests and enjoy a more comfortable and safer experience. Furthermore, floor-standing armrests typically result in a more modern and streamlined appearance, concealing the exposed connecting structure and support legs beneath the traditional sofa, making the sofa's shape more concise and stylish.

[0064] like Figure 6 and Figure 8 As shown in this application, the handrail bracket 10 includes a handrail main board 11 and a handrail mounting plate 12 connected to each other. The functional iron frame also includes a fixing frame 13, which includes two fixing rods 130. Both fixing rods 130 are connected to the handrail main board 11 or the handrail mounting plate 12; or, one of the two fixing rods 130 is connected to the handrail main board 11, and the other of the two fixing rods 130 is connected to the handrail mounting plate 12.

[0065] Optionally, in the first embodiment of the drive structure 60, the drive body 61 is connected to the handrail bracket 10 via a fixing frame 13, and the drive body 61 is mounted on two fixing rods 130. Thus, connecting the drive body 61 to the handrail bracket 10 via two fixing rods 130 significantly enhances the stability of the drive body 61, regardless of whether both fixing rods 130 are connected to the handrail main board 11, or one is connected to the handrail main board 11 and the other to the handrail mounting plate 12. This prevents the drive body 61 from easily shaking or shifting during operation, thereby improving the stability and reliability of the entire functional frame when changing postures. Furthermore, selecting appropriate positions to connect the fixing rods 130 optimizes the spatial layout between the drive body 61 and other structural components (such as the transmission component 62, suspension structure 30, etc.), avoiding the possibility of interference with the seat frame and other moving parts due to improper layout of the drive structure 60, and ensuring smooth operation of the functional frame in various postures.

[0066] Optionally, in the second embodiment of the drive structure 60, the drive component 63 is disposed on one of the two fixing rods 130 closer to the backrest structure 50. Thus, by fixing the drive component 63 to the armrest bracket 10 via a fixing rod 130, the stability of the drive component 63 is significantly enhanced, regardless of whether the fixing rod 130 is connected to the armrest main board 11 or the armrest mounting plate 12. This prevents the drive component 63 from shaking or shifting during operation, thereby improving the stability and reliability of the entire functional frame when changing posture.

[0067] In this embodiment, the armrest main board 11 is floor-mounted and used to connect to the sofa armrest; the armrest mounting plate 12 is fixedly connected to the armrest main board 11, so that the functional iron frame is suspended in the air. In other embodiments, the armrest bracket 10 can be constructed in various styles, or it can be a support frame structure with its own legs, so as to achieve the suspended placement of the functional iron frame.

[0068] In this application, the suspension structure 30 includes a movable component 31. The movable component 31 is movably connected to the armrest support 10 via a first connecting component 32 and a second connecting component 33, and movably connected to the seat frame support 20 via a third connecting component 34, so that the seat frame support 20 is movably positioned relative to the armrest support 10. This allows the seat frame support 20 to move in multiple dimensions relative to the armrest support 10. During the posture transition of the functional frame, the seat frame support 20 can flexibly adjust its position relative to the armrest support 10 according to the user's body posture and needs, thereby providing a more comfortable sitting or lying experience. Furthermore, the movable component 31, connected to both the seat frame support 20 and the armrest support 10, can absorb and disperse the impact force generated during posture changes, improving the structural stability and smoothness of the entire functional frame. Simultaneously, it makes the overall structure of the functional frame more compact and thinner, facilitating use.

[0069] When the functional frame is in a seated position, the movable part 31 is located at the position with the greatest overlap with the armrest support 10; when the functional frame is in a relaxed position, the relative position between the movable part 31 and the armrest support 10 is the same as the relative position when the functional frame is in a seated position, that is, the first connecting component 32 and the second connecting component 33 drive the movable part 31 to move to the position with the greatest overlap with the armrest support 10; when the functional frame is in a reclining position, the first connecting component 32 and the second connecting component 33 drive the movable part 31 to move so that the movable part 31 extends relative to the armrest support 10.

[0070] In a first embodiment of the first connection component 32 of this application, such as Figure 4 and Figure 7 As shown, the first connecting assembly 32 includes a first connecting rod 322, a second connecting rod 323, and a third connecting rod 324. The first end of the first connecting rod 322 is hinged to the handrail bracket 10; the first end of the second connecting rod 323 is hinged to the movable member 31, and the second end of the second connecting rod 323 is hinged to the second end of the first connecting rod 322; the first end of the third connecting rod 324 is hinged to the middle of the second connecting rod 323, and the second end of the third connecting rod 324 is hinged to the handrail bracket 10. This configuration means that two of the three hinge points of the first connecting assembly 32 are hinged to the handrail bracket 10, while the other is hinged to the movable rod. This makes the movement of the movable rod more dependent on the positional changes of the handrail bracket 10, resulting in a more fixed movement path for the movable rod. Furthermore, the handrail bracket 10 bears more structural support and stress dispersion, improving the stability and reliability of the functional steel frame.

[0071] In a second embodiment of the first connection component 32 of this application, such as Figure 5 and Figure 9 As shown, the first connecting assembly 32 includes a first connecting rod 322, a second connecting rod 323, and a third connecting rod 324. The first end of the first connecting rod 322 is hinged to the movable member 31; the first end of the second connecting rod 323 is hinged to the movable member 31; the first end of the third connecting rod 324 is hinged to the second end of the first connecting rod 322, the second end of the second connecting rod 323 is hinged to the middle of the third connecting rod 324, and the second end of the third connecting rod 324 is hinged to the armrest support 10. This configuration ensures that when the functional frame is in a seated position, the angle between the third connecting rod 43 and the armrest support 10 in the retracted position is acute, resulting in a smaller thickness in the retracted position. When the third connecting rod 43 is in the extended position (from a relaxed position to a reclining position), it rotates forward and stands upright, thereby not only moving the seat frame support 20 forward but also increasing the distance between the seat frame support 20 and the armrest support 10. This allows the front end of the seat frame support 20 to tilt upwards in the extended position, making the user more comfortable in the reclining position.

[0072] In a third embodiment of the first connection component 32 of this application, as Figure 10 As shown, the first connecting component 32 includes a first sliding roller 320 and a first guide rail 321. The first sliding roller 320 is connected to the movable component 31 and is rotatably arranged around its own axis. The first guide rail 321 is fixed to the armrest support 10, and the first sliding roller 320 is movably arranged within the first guide rail 321 along its extension direction. When the functional frame is in a sitting or leisure position, the first sliding roller 320 moves along the extension direction of the first guide rail 321 towards the armrest support 10. When the functional frame changes to a reclining position, the first sliding roller 320 moves along the extension direction of the first guide rail 321 to a position away from the armrest support 10.

[0073] In this embodiment, one end of the first guide rail 321 can be fixedly connected to the handrail bracket 10 by means of bolts and nuts; the first connecting component 32 is a roller-type slide rail with a simple structure.

[0074] Specifically, the connection point between the first guide rail 321 and the armrest support 10 is higher than the lowest point of the armrest support 10, so that when the first sliding roller 320 moves along the first guide rail 321, the movable part 31 is higher than the armrest support 10. This ensures that during the movement of the movable part 31, its lowest point is always higher than the lowest point of the armrest support 10. Furthermore, since the armrest support 10 is fixed relative to the supporting base, the minimum distance between the lowest point of the suspension structure 30 and the supporting base is always the same as the distance between the lowest point of the armrest support 10 and the supporting base. Therefore, when the movable sofa uses the functional iron frame of this application, its bottom vertical space is larger, which is more conducive to cleaning the bottom of the movable sofa, and the movement of the movable part 31 does not affect the height of the vertical space. It also ensures that the movable part 31 does not contact or interfere with any part of the armrest support 10 when moving along the first guide rail 321. Especially when the sofa changes position, the movement path of the movable part 31 is raised, avoiding collisions with other components and ensuring smooth and safe movement.

[0075] In a first embodiment of the second connecting component 33 of this application, the second connecting component 33 includes a fourth connecting rod 330, a fifth connecting rod 331, and a sixth connecting rod 332; the first end of the fourth connecting rod 330 is hinged to the handrail bracket 10; the fifth connecting rod 331 is spaced apart from the fourth connecting rod 330, and the first end of the fifth connecting rod 331 is hinged to the handrail bracket 10; the first end of the sixth connecting rod 332 is hinged to the second end of the fourth connecting rod 330, the second end of the fifth connecting rod 331 is hinged to the middle part of the sixth connecting rod 332, and the second end of the sixth connecting rod 332 is hinged to the movable member 31.

[0076] In this embodiment, the sixth connecting rod 332 includes at least four bent rod segments connected in sequence. The length and angle of each bent rod segment can be adjusted to ensure that during changes in posture (e.g., from a sitting to a reclining position), it avoids collisions with the backrest structure 50 while moving the movable component 31. Simultaneously, first limiting members 343 can be selectively provided on the at least four bent rod segments of the sixth connecting rod 332. This can more effectively limit the range of motion of the fifth connecting rod 331, preventing overextension or retraction, protecting the entire mechanism from damage, and avoiding potential safety risks to the user due to excessive movement. The first limiting members 343 are typically used to prevent further movement of the second connecting component 33 when a specific position is reached, ensuring that the movable component 31 remains safely and stably in the correct position in any posture.

[0077] To ensure that the distance between the bottom of the suspension structure 30 and the ground remains unchanged during the repositioning of the functional iron frame, the connection point between the first end of the fifth connecting rod 331 and the armrest bracket 10 is higher than the lowest point of the armrest bracket 10. The length of the fourth connecting rod 330 is L1, the length of the fifth connecting rod 331 is L2, and the length of the sixth connecting rod 332 is L3; where L1 > L2 > 1 / 2L3, so that during the movement of the sixth connecting rod 332, the movable part 31 is higher than the armrest bracket 10. This ensures that during the movement of the movable part 31, its lowest point is always higher than the lowest point of the armrest bracket 10. Furthermore, since the armrest bracket 10 is fixed relative to the ground, the minimum distance between the lowest point of the suspension mechanism and the supporting base is always the same as the distance between the lowest point of the mounting structure 1 and the supporting base. Therefore, when the functional iron frame of this application is used on a movable sofa, its bottom vertical space is larger, which is more conducive to cleaning the bottom of the movable sofa, and the movement of the movable part 31 does not affect the height of the vertical space.

[0078] In a second embodiment of the second connecting component 33 of this application, the second connecting component 33 includes a fourth connecting rod 330, a fifth connecting rod 331, and a sixth connecting rod 332. The first end of the fourth connecting rod 330 is hinged to the armrest support 10; the first end of the fifth connecting rod 331 is hinged to the middle of the fourth connecting rod 330, and the second end of the fifth connecting rod 331 is hinged to the movable member 31; the first end of the sixth connecting rod 332 is hinged to the second end of the fourth connecting rod 330, and the second end of the sixth connecting rod 332 is hinged to the movable member 31. This configuration means that two of the three hinge points of the second connecting component 33 are respectively hinged to the movable member 31, while the other is hinged to the armrest support 10. This allows the movement path of the movable member 31 to be determined more by its relative position to the armrest support 10. The movable member 31 has a wider range of motion and greater possibilities when changing seat posture, better adapting to the needs of different users. This not only optimizes the movement path of the movable member 31 and enhances the stability and load-bearing capacity of the structure, but also improves the accuracy and reliability of the movement.

[0079] In a third embodiment of the second connecting component 33 of this application, the second connecting component 33 includes a second sliding roller and a second guide rail; the second sliding roller is connected to the movable member 31 and is rotatably arranged about its own axis; one end of the second guide rail is fixed to the armrest bracket 10, and the second sliding roller is movably arranged within the second guide rail along its extension direction. When the functional frame is in a sitting or leisure position, the first sliding roller 320 moves along the extension direction of the first guide rail 321 to a position close to the armrest bracket 10; when the functional frame changes to a reclining position, the first sliding roller 320 moves along the extension direction of the first guide rail 321 to a position away from the armrest bracket 10.

[0080] In this embodiment, one end of the second guide rail can be fixedly connected to the handrail bracket 10 by means of bolts and nuts; the second connecting component 33 is a roller-type slide rail with a simple structure.

[0081] Specifically, the connection point between the second guide rail and the armrest support 10 is higher than the lowest point of the armrest support 10, so that when the second sliding roller moves along the second guide rail, the movable part 31 is higher than the armrest support 10. This ensures that during the movement of the movable part 31, its lowest point is always higher than the lowest point of the armrest support 10. Furthermore, since the armrest support 10 is fixed relative to the supporting base, the minimum distance between the lowest point of the suspension structure 30 and the supporting base is always the same as the distance between the lowest point of the armrest support 10 and the supporting base. Therefore, when the movable sofa uses the functional iron frame of this application, its bottom vertical space is larger, which is more conducive to cleaning the bottom of the movable sofa, and the movement of the movable part 31 does not affect the height of the vertical space. It also ensures that the movable part 31 does not contact or interfere with any part of the armrest support 10 when moving along the second guide rail. Especially when the sofa changes position, the movement path of the movable part 31 is raised, avoiding collisions with other components and ensuring smooth and safe movement.

[0082] Optionally, in this application, the first connecting component 32 may be any one of the first, second and third embodiments; the second connecting component 33 may be any one of the first, second and third embodiments.

[0083] Specifically, the third connecting component 34 includes a seventh connecting rod 340, an eighth connecting rod 341, and a ninth connecting rod 342. The first end of the seventh connecting rod 340 is hinged to the movable member 31, and the second end is hinged to the seat frame support 20. The eighth connecting rod 341 is spaced apart from the seventh connecting rod 340; the first end of the eighth connecting rod 341 is hinged to the movable member 31, and the second end is hinged to the seat frame support 20. Thus, by hinged to the movable member 31 and the seat frame support 20 by the seventh connecting rod 340 and the eighth connecting rod 341 respectively, a closed linkage quadrilateral structure is formed. This allows for precise control of the movement path of the seat frame support 20 relative to the movable member 31, ensuring that the seat frame support 20 can move along a predetermined, smooth path without deviating from the expected trajectory when changing posture.

[0084] Optionally, the third connecting component 34 further includes a ninth connecting rod 342. The first end of the ninth connecting rod 342 is hinged to the middle of the seventh connecting rod 340, and the second end of the ninth connecting rod 342 is hinged to the foot pedal structure 40. Specifically, the second end of the ninth connecting rod 342 is hinged to the first connecting rod 41 of the foot pedal structure 40. With the above configuration, the ninth connecting rod 342 is not only hinged to the middle of the seventh connecting rod 340, but also to the seat frame bracket 20 and the foot pedal structure 40, which effectively disperses the force during movement, avoids stress concentration, and improves the durability of the components. Moreover, while the foot pedal structure 40 moves and changes, the seat frame bracket 20 can also respond and move in tandem, achieving more complex functional coordination, ensuring that the movements of various components are coordinated and consistent when the seat changes posture, and improving the user experience.

[0085] like Figure 3 and Figure 6 As shown, the foot pedal structure 40 includes a first linkage group and a second linkage group. The first linkage group includes a first linkage 41, a second linkage 42, a third linkage 43, and a fourth linkage 44, which are hinged sequentially. The second linkage group includes a fifth linkage 45 and a sixth linkage 46, which are hinged together. The middle part of the second linkage 42 is hinged to the middle part of the fifth linkage 45, and the middle part of the third linkage 43 is hinged to the middle part of the sixth linkage 46. The first linkage 41 and the fifth linkage 45 are respectively hinged to the seat frame bracket 20. The ninth connecting rod 342 is hinged to either the first linkage 41 or the fifth linkage 45. The transmission component 62 or the movable component 64 can be selected. The ground is connected to the ninth connecting rod 342 or any one of the first and second connecting rod groups; the first foot member 47 and the second foot member 48, the end of the sixth connecting rod 46 away from the fifth connecting rod 45 is hinged to the first end of the second foot member 48; the first foot member 47 includes a hinged first segment 470 and a second segment 471, the second end of the second foot member 48 is hinged to the first segment 470, the end of the fourth connecting rod 44 away from the third connecting rod 43 is hinged to the second segment 471, and the third end of the second foot member 48 is hinged to the middle of the fourth connecting rod 44; wherein the first segment 470 and the second segment 471 are arranged at an angle.

[0086] In the above configuration, the first link 41 and the second link 42, the second link 42 and the third link 43, the third link 43 and the fourth link 44, and the fifth link 45 and the sixth link 46 are all set at a preset angle, and this preset angle L1 satisfies: 30°≤L1≤120°. Furthermore, the seat frame support 20, the first link 41, the second link 42, and the fifth link 45 form a planar quadrilateral structure; the second link 42, the third link 43, the fifth link 45, and the sixth link 46 form a planar quadrilateral structure; the third link 43, the fourth link 44, the sixth link 46, and the first footrest 47 form a planar quadrilateral structure; the first footrest 47 and the second footrest 48 are respectively used to support the user's legs. In this way, after the driving body 61 applies driving force to any link of the foot pedal structure 40 through the transmission component 62, the three planar quadrilateral structure links unfold sequentially. The first link 41 and the second link 42, the second link 42 and the third link 43, the third link 43 and the fourth link 44, and the fifth link 45 and the sixth link 46 are infinitely close to parallel, and the overall structure is stable. At the same time as the three planar quadrilateral structures unfold sequentially, the first footrest 47 and the second footrest 48 also unfold. Meanwhile, while the forward extension distance remains unchanged, the length of all six links in this application is shortened, so that the shortened links occupy less vertical space when stored, thereby achieving a thinner foot pedal structure 40 when stored in a seated position.

[0087] In this embodiment, the foot pedal structure 40 further includes a second limiting member 49. The second limiting member 49 can be selectively disposed on any one of the connecting rods in the first and second connecting rod groups, the first foot rest 47, the second foot rest 48, and the seat frame bracket 20. When the foot pedal structure 40 extends to the first preset position, the second limiting member 49 engages with the nearest connecting rod among the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, the fourth connecting rod 44, the fifth connecting rod 45, and the sixth connecting rod 46. Thus, when the foot pedal structure 40 extends to the limit state where there are 120° between the first connecting rod 41 and the second connecting rod 42, the second connecting rod 42 and the third connecting rod 43, the third connecting rod 43 and the fourth connecting rod 44, and the fifth connecting rod 45 and the sixth connecting rod 46, the second limiting member 49 abuts against any one of the connecting rods to keep the foot pedal structure 40 in the limit extension state, while enhancing the overall stability of the foot pedal structure 40.

[0088] like Figure 3 and Figure 6As shown, the backrest structure 50 includes a backrest member 51, a seventh link 52, an eighth link 53, and a linkage member 54. The backrest member 51 is movably disposed. The first end of the seventh link 52 is hinged to the backrest member 51. The first end of the eighth link 53 is hinged to the backrest member 51. The linkage member 54 is provided with a first hinge point 540, a second hinge point 541, a third hinge point 542, and a fourth hinge point 543 at intervals. The linkage member 54 is hinged to the seat frame bracket 20 through the first hinge point 540, to the second end of the seventh link 52 through the second hinge point 541, to the second end of the eighth link 53 through the third hinge point 542, and to one end of the indirect link 56 through the fourth hinge point 543. The other end of the indirect link 56 is hinged to the armrest bracket 10. Specifically, the other end of the indirect link 56 is hinged to the armrest mounting plate 12. The middle part of the seventh link 52 is hinged to the handrail bracket 10 through the ninth link 55.

[0089] With this configuration, after the linkage 54 receives a driving force at the fourth hinge point 543, it rotates around the first hinge point 540, causing the seventh link 52 to move forward, which in turn moves the front end of the backrest 51 forward. Simultaneously, the rotation of the linkage 54 around the first hinge point 540 causes the eighth link 53 to move downward, pulling the rear end of the backrest 51 downward, thus allowing the backrest 51 to recline. This complex hinge structure, relying on multiple hinge points, improves the overall stability of the mechanism. Each hinge point plays a specific role in force transmission and motion control. Through precise design and adjustment, the stability and reliability of the backrest structure 50 in various positions are ensured.

[0090] Optionally, both the seventh link 52 and the eighth link 53 include two bent segments that form an L-shaped bar.

[0091] Specifically, by setting the seventh link 52 as an L-shaped bar, with the inflection point of the L-shaped bar protruding away from the backrest 51, when the functional iron frame is in a lying position, the end of the seventh link 52 connected to the backrest 51 protrudes towards the footrest structure 40, which helps to reduce the gap between the soft pad on the backrest structure 50 and the soft pad on the seat frame bracket 20, thereby reducing the risk of pinching.

[0092] Specifically, such as Figure 10As shown, using the plane of the supporting base as a reference plane, when the functional frame switches from a sitting to a reclining position, the hinge point between the backrest 51 and the seventh link 52 or the hinge point with the eighth link 53 moves horizontally a preset distance A relative to the reference plane. The preset distance A is 228mm to 346mm. Preferably, the preset distance A is 258mm to 316mm. In this embodiment, the supporting base is the ground. Thus, after the functional frame switches to a reclining position, the backrest structure 50 moves forward a preset distance A relative to the ground, which compensates for the backward tilt of the backrest 51. This ensures that the backrest 51 does not interfere with the wall in the reclining position, guaranteeing the overall structural stability of the functional frame and achieving zero wall contact. Simultaneously, during the switch from a sitting to a reclining position, the horizontal movement distance of the backrest 51 is limited to a certain range, helping to reduce the space required for the sofa to change positions, making the entire product more compact and suitable for environments with limited space. Furthermore, the movement of the backrest 51 is closely linked with the movement of the seat frame support 20 and the movable part 31 through the linkage 54, forming a coordinated movement system. This linkage effect ensures that when the sofa changes position, all parts can move synchronously and harmoniously, avoiding incoordination or conflict within the mechanism.

[0093] Specifically, such as Figure 10 and Figure 11 As shown, taking the seat frame support 20 as a reference, when the functional frame switches from a sitting position to a reclining position, the hinge point between the backrest 51 and the seventh link 52 or the eighth link 53 moves a preset distance B relative to the reference. The preset distance B is 60mm to 100mm. The preset distance A is positively correlated with the preset distance B; the reference moves a preset distance C relative to the reference surface in the horizontal direction. Thus, the backrest 51 is hinged to the seat frame support 20 via multiple links. After the functional frame switches to a reclining position, the center lines connecting the hinge points of the seventh link 52 with the backrest 51 and the linkage 54 are nearly horizontal. This allows the hinge point between the backrest 51 and the seventh link 52 or the eighth link 53 to move forward to the maximum extent, further driving the backrest 51 forward to achieve a zero-wall-leaning effect. Furthermore, with zero wall contact, the backrest component 51 moves forward a greater distance (preset distance B). This reduces the required forward distance (preset distance C) for the seat frame support 20, resulting in a more stable center of gravity for the functional frame and reducing the likelihood of instability caused by excessive forward movement of the seat frame support 20. Simultaneously, the preset distance C of the seat frame support 20's movement provides sufficient space for the backrest component 51 to slide and recline, allowing it to move precisely to the desired position in a reclining posture within a larger space, even with zero wall contact.

[0094] In this application, when the functional frame is in a seated position, the overall thickness between the top of the armrest support 10 and the seat frame support 20 in the vertical direction is 150mm to 160mm. This results in a thinner overall structure while maintaining the same height of the seat frame support 20, which increases the vertical space below the armrest support 10, saving space while ensuring the sofa's functionality remains unaffected. Furthermore, the thinner overall thickness also facilitates the sofa's transportation and installation. During transportation, the thinner sofa can more easily pass through narrow passages such as stairs and doorways, reducing handling difficulties and the risk of damage. During installation, the compact dimensions simplify the installation process and reduce the space requirements.

[0095] In this application, when the functional frame is in a seated position, the thickness of the footrest structure 40 is 120mm to 130mm. This makes the footrest structure 40 occupy less space when stored, while the variation in thickness when unfolded helps to provide sufficient leg support space, ensuring that the footrest structure 40 can provide sufficient support and comfort for the user even in a seated position. Moreover, this thickness range can improve space utilization efficiency without compromising comfort.

[0096] In this application, when the functional frame switches from a sitting to a reclining position, the backrest structure 50 rotates at an angle ranging from 33° to 43°. This ensures that the backrest structure 50 provides a suitable support angle when the user transitions to a reclining position, allowing the user's back to rest comfortably. The 33° to 43° tilt angle helps optimize space utilization when changing positions, ensuring both comfort in the reclining position and preventing excessive tilting of the backrest structure 50, maintaining the structural stability of the functional frame. This ensures the sofa can adapt to a compact layout in different positions and helps prevent movement interference between the backrest structure 50 and other parts of the sofa when changing positions, improving the user experience.

[0097] In this application, when the functional frame switches from a sitting to a reclining position, the seat frame support 20's lifting angle ranges from 4.5° to 6.5°. This ensures that when the user transitions to a reclining position, the seat frame support 20 can slightly rise, coordinating with the movement of the backrest structure 50 and footrest structure 40, thus providing an ergonomic reclining angle. This angle range effectively supports the user's spine, reducing pressure on the body when changing positions and providing a more comfortable reclining experience. Simultaneously, the limitation on the seat frame structure's lifting angle aims to balance space efficiency and reclining comfort. An excessively large lifting angle may occupy more space, while an excessively small angle may affect reclining comfort. This angle range avoids occupying too much extra space while ensuring adequate support for the user's legs and back when reclining, allowing the sofa to remain space-friendly when changing positions.

[0098] To ensure that the distance between the lowest point of the functional frame and the supporting base remains constant during positional changes, the distance S between the lowest point of the armrest bracket 10 and the supporting base is set to 11cm ≤ S ≤ 17cm. The seat frame bracket 20, footrest structure 40, backrest structure 50, and drive structure 60 are respectively positioned above the armrest bracket 10. This ensures that when the functional frame switches between sitting, relaxing, and reclining positions, the distance between the lowest point of the functional frame and the supporting base is always no less than S. Therefore, when using the functional frame of this embodiment on a movable sofa, the vertical space at the bottom is larger, which is more conducive to cleaning the bottom of the movable sofa, and the vertical space height is not affected during positional changes of the functional frame.

[0099] Preferably, the distance S is in the range of 12cm≤S≤14cm.

[0100] According to another aspect of the present invention, a movable sofa is provided, including the aforementioned functional iron frame.

[0101] The functional iron frame of this invention allows the movable sofa to smoothly transition between sitting, relaxing, and reclining positions, providing the most suitable seating angle and support according to different usage scenarios and user needs. Furthermore, by replacing the traditional push-rod motor with a slider motor, it fundamentally solves the problem in existing technologies where the push-rod motor of the sofa frame is too close to the seat frame surface, resulting in a poor user experience.

[0102] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0103] A drive structure is used for a functional steel frame, which includes an armrest support 10 and a seat frame support 20 movably connected to the armrest support 10. The seat frame support 20 has a footrest structure 40 and a backrest structure 50 that are extendable or retractable at both ends, allowing the functional steel frame to be positioned in a sitting, relaxing, and reclining state. The drive structure 60 includes a drive body 61 and a transmission component 62. The drive body 61 is connected to the armrest support 10 and located near the backrest structure 50. At least a portion of the drive body 61 is movably arranged in a horizontal direction. The transmission component 62 is connected to at least a portion of the drive body 61 and the footrest structure 40, respectively, so that the drive body 61 drives the transmission component 62 to move, allowing the functional steel frame to switch between sitting, relaxing, and reclining states. The lowest point of the transmission component 62 is higher than the lowest point of the drive body 61. The technical solution of this utility model involves driving the main body 61 to move horizontally, causing the transmission component 62 to transmit the driving force from the main body 61 to extend or retract the foot pedal structure 40. Compared to the traditional push-rod motor configuration, this is not a simple linear push-pull. In this application, the main body 61 always moves horizontally, and the lowest point of the transmission component 62 is always higher than the lowest point of the main body 61. Therefore, when the position of the functional frame changes, the transmission component 62 indirectly drives the foot pedal structure 40 to move. The main body 61 or its extension will never get too close to the seat frame surface, or even collide with it, thus avoiding the safety hazard of the user potentially touching the main body 61 during use. This solves the problem in the prior art where the push-rod motor of the sofa frame is too close to the seat frame surface, resulting in a poor user experience.

[0104] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0105] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0106] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0107] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0108] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A driving structure for a functional iron stand, the functional iron stand comprising a handrail support (10) and a seat frame support (20) movably connected with the handrail support (10), both ends of the seat frame support (20) being respectively provided with a footrest structure (40) and a backrest structure (50) which are extendable or retractable, so that the functional iron stand has a sitting position state, a leisure position state and a lying position state, characterized in that, The drive structure (60) includes: A drive body (61) is connected to the armrest bracket (10) and located at one end near the backrest structure (50), at least a portion of the drive body (61) being movably disposed in the horizontal direction; The transmission component (62) is connected to at least a portion of the drive body (61) and the foot pedal structure (40) respectively, so as to drive the transmission component (62) to move through at least a portion of the drive body (61) so as to switch the functional iron frame between a sitting position, a leisure position and a lying position. The lowest point of the transmission component (62) is higher than the lowest point of the drive body (61).

2. The drive structure of claim 1, wherein The driving body (61) includes: The guide rail (610) is provided extending horizontally; The guide member (611) is slidably disposed on the guide rail (610), and the two ends of the transmission component (62) are respectively connected to the guide member (611) and the foot pedal structure (40); The motor component (612) is driven to the guide member (611) to drive the guide member (611) to move the transmission component (62) along the extension direction of the guide rail (610).

3. The drive structure of claim 1, wherein The transmission component (62) includes: A transmission rod (620), one end of which is at least partially hinged to the drive body (61); The first mounting rod (621) is hinged to the other end of the transmission rod (620), and one end of the first mounting rod (621) is connected to the foot pedal structure (40).

4. The drive structure of claim 3, wherein The transmission rod (620) is at least one, and the transmission component (62) further includes: A shield (622) is connected to at least one of the transmission rods (620) or the first mounting rod (621); the seat frame bracket (20) has a support surface for carrying a user, and the top surface of the shield (622) is disposed near the support surface to support the user.

5. A driving structure for a functional iron frame, the functional iron frame including an armrest support (10) and a seat frame support (20) movably connected to the armrest support (10), wherein the two ends of the seat frame support (20) are respectively provided with a footrest structure (40) and a backrest structure (50) that can extend or retract, so that the functional iron frame can be in a sitting position, a leisure position, and a reclining position, characterized in that, The drive structure (60) includes: A drive component (63) is connected to the armrest bracket (10) and located at one end near the backrest structure (50); The movable component (64) is connected to the drive end of the drive component (63) and the foot pedal structure (40) respectively. At least a portion of the movable component (64) is movably arranged in a direction inclined to the horizontal so as to drive the movable component (64) to move through the drive component (63) so as to switch the functional iron frame between a sitting position, a leisure position and a lying position. The driving component (63) and the movable component (64) extend in a straight line along a direction inclined to the horizontal, and the driving component (63) is located below the movable component (64).

6. The driving structure according to claim 5, characterized in that, The movable component (64) includes; A push rod (640) is connected to the drive end of the drive component (63), and the end of the push rod (640) away from the drive component (63) is telescopically provided; The second mounting rod (641) is hinged to the end of the push rod (640) away from the drive component (63), and the end of the second mounting rod (641) is connected to the foot pedal structure (40).

7. A functional iron frame, characterized in that, include: The handrail support (10) is fixed relative to the ground; Seat frame support (20) and suspension structure (30), wherein the seat frame support (20) is movably connected to the armrest support (10) via the suspension structure (30); The footrest structure (40) and the backrest structure (50) are respectively extended or retractable and are respectively provided at both ends of the seat frame support (20) so that the functional iron frame has a sitting posture, a leisure posture and a lying posture. The drive structure (60) according to any one of claims 1 to 6 is used to drive the functional iron frame to switch between a sitting position, a leisure position and a lying position.

8. The functional iron frame according to claim 7, characterized in that, The suspension structure (30) includes: The movable component (31) is movably connected to the armrest bracket (10) via a first connecting component (32) and a second connecting component (33), and is movably connected to the seat frame bracket (20) via a third connecting component (34), so that the seat frame bracket (20) is movably disposed relative to the armrest bracket (10).

9. The functional iron frame according to claim 8, characterized in that, The first connection component (32) includes: The first connecting rod (322) has its first end hinged to the handrail bracket (10); The second connecting rod (323) has its first end hinged to the movable part (31) and its second end hinged to the second end of the first connecting rod (322). The third connecting rod (324) has its first end hinged to the middle of the second connecting rod (323) and its second end hinged to the handrail bracket (10).

10. The functional iron frame according to claim 8, characterized in that, The first connection component (32) includes: A first connecting rod (322) is provided, the first end of which is hinged to the movable member (31); The second connecting rod (323) has its first end hinged to the movable member (31); The third connecting rod (324) has its first end hinged to the second end of the first connecting rod (322), the second end of the second connecting rod (323) hinged to the middle of the third connecting rod (324), and the second end of the third connecting rod (324) hinged to the handrail bracket (10).

11. The functional iron frame according to claim 8, characterized in that, The second connection component (33) includes: The fourth connecting rod (330) has its first end hinged to the handrail bracket (10); The fifth connecting rod (331) is spaced apart from the fourth connecting rod (330), and the first end of the fifth connecting rod (331) is hinged to the handrail bracket (10); The sixth connecting rod (332) has its first end hinged to the second end of the fourth connecting rod (330), the second end of the fifth connecting rod (331) hinged to the middle of the sixth connecting rod (332), and the second end of the sixth connecting rod (332) hinged to the movable part (31).

12. The functional iron frame according to claim 8, characterized in that, The second connection component (33) includes: The fourth connecting rod (330) has its first end hinged to the handrail bracket (10); The fifth connecting rod (331) has its first end hinged to the middle of the fourth connecting rod (330) and its second end hinged to the movable part (31). The sixth connecting rod (332) has its first end hinged to the second end of the fourth connecting rod (330), and its second end hinged to the movable part (31).

13. The functional iron frame according to claim 8, characterized in that, The third connection component (34) includes: The seventh connecting rod (340) has its first end hinged to the movable part (31) and its second end hinged to the seat frame bracket (20). The eighth connecting rod (341) is spaced apart from the seventh connecting rod (340). The first end of the eighth connecting rod (341) is hinged to the movable part (31), and the second end of the eighth connecting rod (341) is hinged to the seat frame bracket (20).

14. The functional iron frame according to claim 7, characterized in that, The foot pedal structure (40) includes: A first linkage group and a second linkage group, wherein the first linkage group includes a first link (41), a second link (42), a third link (43) and a fourth link (44) that are hinged in sequence, and the second linkage group includes a fifth link (45) and a sixth link (46) that are hinged in sequence; the middle part of the second link (42) is hinged to the middle part of the fifth link (45), the middle part of the third link (43) is hinged to the middle part of the sixth link (46), the first link (41) and the fifth link (45) are respectively hinged to the seat frame bracket (20), and at least a portion of the drive structure (60) is selectively connected to either the first linkage group or the second linkage group; The first footrest (47) and the second footrest (48) are provided. The end of the sixth link (46) away from the fifth link (45) is hinged to the first end of the second footrest (48). The first footrest (47) includes a hinged first segment (470) and a second segment (471). The second end of the second footrest (48) is hinged to the first segment (470). The end of the fourth link (44) away from the third link (43) is hinged to the second segment (471). The third end of the second footrest (48) is hinged to the middle of the fourth link (44). The first segment (470) and the second segment (471) are arranged at an angle.

15. The functional iron frame according to claim 7, characterized in that, The backrest structure (50) includes: The backrest (51) is movably set; The seventh link (52) is hinged at its first end to the backrest (51); The eighth link (53) is hinged at its first end to the backrest (51); The linkage (54) is provided with a first hinge point (540), a second hinge point (541), a third hinge point (542) and a fourth hinge point (543) respectively. The linkage (54) is hinged to the seat frame support (20) through the first hinge point (540), the linkage (54) is hinged to the second end of the seventh link (52) through the second hinge point (541), the linkage (54) is hinged to the second end of the eighth link (53) through the third hinge point (542), and the linkage (54) is connected to the handrail support (10) through the fourth hinge point (543).

16. The functional iron frame according to claim 15, characterized in that, Using the plane supporting the foundation as a reference plane, when the functional iron frame switches from the sitting position to the lying position, the hinge point of the backrest (51) with the seventh link (52) or with the eighth link (53) moves a preset distance A in the horizontal direction relative to the reference plane, where the preset distance A is 228mm to 346mm.

17. The functional iron frame according to claim 15, characterized in that, Using the seat frame bracket (20) as a reference, when the functional iron frame switches from the sitting position to the reclining position, the hinge point of the backrest (51) with the seventh link (52) or with the eighth link (53) moves a preset distance B relative to the reference, where the preset distance B is 60mm to 100mm.

18. The functional iron frame according to any one of claims 7 to 17, characterized in that, The value range of the distance S between the lowest point of the handrail bracket (10) and the supporting foundation is: 11cm≤S≤17cm; The seat frame bracket (20), the foot pedal structure (40), the backrest structure (50), and the drive structure (60) are respectively disposed above the armrest bracket (10).

19. A movable sofa, characterized in that, Includes the functional iron frame as described in any one of claims 7 to 18.

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