Sofa extension bracket and sofa

Abstract

The present invention discloses a sofa extension support and a sofa, comprising a base, an extension component and a seat frame, wherein the extension component is connected to the base, the extension component comprises a side panel, a leg mechanism and a support component; the leg mechanism comprises a connecting rod component and a main footrest member connected by six connecting rods, the connecting rod component drives the main footrest member to extend or contract, the seat frame is arranged on the side panel, and the height from the highest point of the seat frame to the ground is less than 28 cm. The extension length and height of the connecting rod component of the present invention are increased, and the height from the ground is higher during the movement, the height of the seat frame from the ground is lower, and the comfort is higher after the soft packing.

Description

Technical Field

[0001] The invention relates to the technical field of functional sofa manufacturing, and in particular to a sofa extension bracket and a sofa. Background Art

[0002] Functional sofas are multifunctional sofas that can adjust the seat angle and headrest angle to meet the different needs of the body at different times. They are more user-friendly than sofas without functional positions. Some rocking sofas can even rock back and forth, which is very comfortable. At the same time, there are also sofas or seats with massage, zero gravity and other functions that are extremely beneficial to physical health.

[0003] The legs of a sofa with an extension function are extended and retracted by a retractable connecting rod mechanism. Generally, the extension range of the connecting rod mechanism is limited, and the footrest extends from the frame of the seat at a relatively constant arc during the extension and retraction process. If the overall structure of the seat is short, the distance that the connecting rod mechanism and the footrest can be extended is too long, which will easily cause the footrest to rub against the ground. In order to facilitate leg extension, the existing sofa structures with an extension function generally have a high seat height, which affects comfort. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the leg stretching distance and stretching height are limited when the sofa seat is low, and the leg mechanism is prone to rubbing against the ground during the process of unfolding and retracting.

[0005] In order to achieve the above object, the present invention provides a sofa extension bracket, comprising a base, an extension component and a seat frame, wherein the extension component is connected to the base, and the extension component comprises a side panel, a leg mechanism and a support component;

[0006] The leg mechanism comprises a connecting rod assembly and a main footrest, wherein the first connecting rod of the connecting rod assembly is connected to the second connecting rod, and the third connecting rod, the fourth connecting rod, the fifth connecting rod and the sixth connecting rod of the connecting rod assembly are connected in sequence, wherein the first connecting rod and the third connecting rod are respectively connected to the side panels, the middle parts of the first connecting rod and the second connecting rod are respectively cross-connected with the middle parts of the fourth connecting rod and the fifth connecting rod, and the second connecting rod and the sixth connecting rod are connected to the main footrest;

[0007] The support assembly includes a first support member, a second support member and a bracket assembly. The first support member and the second support member are connected to the side panel through the bracket assembly. The seat frame is arranged on the side panel. The height from the highest point of the seat frame to the ground is less than 28 cm.

[0008] Furthermore, the bracket assembly includes a first bracket, a bracket connecting rod and a second bracket, one end of the first bracket is connected to the first support member, and the other end of the first bracket is connected to the side panel, one end of the bracket connecting rod is connected to the middle part of the first bracket, and the other end is connected to the second bracket, and the second bracket is respectively connected to the side panel and the second support member.

[0009] Furthermore, the first support member includes an integrally formed first component and a second component, the first component is bent in a direction close to the second support member and forms a certain angle with the second component, and the second component is connected to the base.

[0010] Furthermore, the first bracket is a V-shaped structure, the lower vertex of the first bracket is connected to the bracket connecting rod, and the other two ends of the first bracket are respectively connected to the first support member and the side plate.

[0011] Furthermore, the side panel comprises a side panel body and a backrest connecting end, the side panel body is connected to the seat frame, and the backrest connecting end is used to be connected to a backrest mechanism.

[0012] Furthermore, it also includes a backrest mechanism, which includes a back mounting member and a back linkage rod;

[0013] The back mounting member is provided with a first transfer point and a second transfer point, the back mounting member is connected to the backrest connecting end via the first transfer point, and the back mounting member is connected to the back linkage rod via the second transfer point;

[0014] One end of the back linkage rod is connected to the back mounting piece, and the other end of the back linkage rod is connected to the base.

[0015] Furthermore, the leg mechanism further comprises an extension assembly, and the extension assembly comprises a connecting rod and an auxiliary footrest;

[0016] The auxiliary footrest is connected to the main footrest, one end of the connecting rod is connected to the sixth connecting rod, and the other end of the connecting rod is connected to the auxiliary footrest, and the auxiliary footrest is used to be connected to the auxiliary footrest board.

[0017] Furthermore, when the leg mechanism is retracted to the extreme position, the height from the connecting surface of the auxiliary footrest to the ground is greater than 8 cm, and when the leg mechanism is extended to the extreme position, the height from the connecting surface of the auxiliary footrest to the ground is greater than 40 cm.

[0018] Furthermore, when the leg mechanism is extended to the extreme position, the distance from the auxiliary footrest to the first transfer point is not less than 100 cm.

[0019] The present invention also provides a sofa, comprising a backrest frame, an armrest connecting frame, an armrest frame and the extension bracket;

[0020] The extension bracket includes two extension components, which are symmetrically arranged along the center plane of the base, and the extension components are used to change the relative positions of the leg mechanism and the backrest mechanism under the drive of the driving component;

[0021] The armrest connecting frame is connected to the armrest frame, and the backrest frame, armrest frame and seat frame are used for supporting the sofa soft bag.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The connecting rod assembly of the present invention is a cross-connected six-link assembly, the extension length of the connecting rod assembly is increased, and the main footrest and the extension assembly are at a higher height from the ground during the arc movement during the unfolding and retracting process, thereby avoiding the phenomenon of rubbing the ground.

[0024] (2) The change in the connection structure between the support assembly and the seat linkage assembly of the present invention reduces the height of the side panels, thereby reducing the height from the seat frame to the ground, that is, the overall seat height of the sofa is reduced, thereby improving the stability of the sofa and the comfort of the user when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical methods in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of an extension bracket according to an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a bracket assembly and a side plate according to an embodiment of the present invention;

[0028] Figure 3 A front view of a single-side structure of an extension bracket according to an embodiment of the present invention;

[0029] Figure 4 A side view of an extension bracket according to an embodiment of the present invention;

[0030] Figure 5 A lying view of the extended stand according to an embodiment of the present invention;

[0031] Figure 6 It is an axonometric view of the extension bracket and the handrail connecting frame according to an embodiment of the present invention;

[0032] Figure 7 The figure is a structural schematic diagram of a sofa according to an embodiment of the present invention.

[0033] Among them, the accompanying drawings are marked as follows: 1-base, 2-extension component, 3-seat frame, 31-support frame, 32-support pad, 4-side panel, 5-leg mechanism, 51-connecting rod assembly, 52-main footrest, 511-first connecting rod, 512-second connecting rod, 513-third connecting rod, 514-fourth connecting rod, 515-fifth connecting rod, 516-sixth connecting rod, 41-side panel body, 42-backrest connecting end, 7-backrest mechanism, 71-back mounting member, 72-back connecting rod, 711-first transfer point, 712-second transfer point, 53 -Extension assembly, 531-connecting rod, 532-auxiliary footrest, 6-support assembly, 61-first support member, 62-second support member, 63-bracket assembly, 631-first bracket, 632-bracket connecting rod, 633-second bracket, 611-first component, 612-second component, 64-seat linkage assembly, 641-first connecting rod, 642-rotating connecting rod, 643-second connecting rod, 8-armrest connecting frame, 70-backrest frame, 80-armrest frame, 9-drive assembly, 91-motor assembly, 92-drive connecting rod. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0036] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example 1

[0038] like Figure 1-5As shown, Embodiment 1 of the present invention provides a sofa extension bracket, comprising a base 1, an extension component 2 and a seat frame 3, wherein the extension component 2 is connected to the base 1, and the extension component 2 comprises a side panel 4, a leg mechanism 5 and a support component 6;

[0039] The leg mechanism 5 includes a connecting rod assembly 51 and a main footrest 52, wherein the first connecting rod 511 of the connecting rod assembly 51 is connected to the second connecting rod 512, and the third connecting rod 513, the fourth connecting rod 514, the fifth connecting rod 515 and the sixth connecting rod 516 of the connecting rod assembly 51 are connected in sequence, wherein the first connecting rod 511 and the third connecting rod 513 are respectively connected to the side panel 4, the middle parts of the first connecting rod 511 and the second connecting rod 512 are respectively cross-connected with the middle parts of the fourth connecting rod 514 and the fifth connecting rod 515, and the second connecting rod 512 and the sixth connecting rod 516 are connected to the main footrest 52. Specifically, a first connecting point 521, a second connecting point 522 and a third connecting point 523 are provided on the main footrest 52, the main footrest 52 is connected to the second connecting rod 512 through the first connecting point 521, and the main footrest 52 is connected to the sixth connecting rod 516 through the second connecting point 522.

[0040] The leg mechanism 5 also includes an extension component 53, which includes a connecting rod 531 and an auxiliary footrest 532; the auxiliary footrest 532 is connected to the main footrest 52 at the third connection point 523, one end of the connecting rod 531 is connected to the sixth connecting rod 516, and the other end of the connecting rod 531 is connected to the auxiliary footrest 532, and the auxiliary footrest 532 is used to connect to the auxiliary footrest board.

[0041] In this embodiment, the driving force acts on the first connecting rod 511, and the first connecting rod 511 drives the fourth connecting rod 514 to rotate forward, thereby driving the third connecting rod 513 connected to the fourth connecting rod to rotate forward in a substantially parallel and spaced relationship with the first connecting rod 511. The sixth connecting rod 516 drives the extension assembly 53 to extend forward and upward. When the leg mechanism 5 is extended to the extreme position, the main footrest 52 and the auxiliary footrest 532 are substantially parallel to the horizontal plane or at an inclined angle. In this embodiment, a part of the connecting rod assembly 51 is two connecting rods, and the other part is four connecting rods connected in sequence. The following four-link structure allows the connecting rod assembly to extend to a higher height, and the height of the connecting rod from the ground is higher during the extension and retraction process. The structure of the connecting rod assembly 51 and the extension assembly 53 of the six-link telescopic structure allows the leg mechanism 5 to extend a longer distance, and the main footrest and the auxiliary footrest are extended to a higher position.

[0042] The support assembly 6 includes a first support member 61, a second support member 62 and a bracket assembly 63, and the first support member 61 and the second support member 62 are connected to the side panel 4 through the bracket assembly 63. In some embodiments, the first support member 61 is bent in a direction close to the second support member 62 to reduce the height of the side panel 4 to the base 1; specifically, the bracket assembly 63 includes a first bracket 631, a bracket connecting rod 632 and a second bracket 633, one end of the first bracket 631 is connected to the first support member 61, the other end of the first bracket 631 is connected to the side panel 4, one end of the bracket connecting rod 632 is connected to the middle part of the first bracket 631, and the other end is connected to the second bracket 633, and the second bracket 632 is connected to the side panel 4 and the second support member 62, respectively.

[0043] Specifically, in this embodiment, the first support member 61 includes an integrally formed first component 611 and a second component 612, the first component 611 is bent in a direction close to the second support member 62, and forms a certain angle with the second component 612, and the second component 612 is connected to the base 1. The angle between the first component 611 and the second component 612 is 110-125 degrees, preferably 117 degrees. Specifically, the first bracket 631 is a V-shaped structure, the lower vertex of the first bracket 631 is connected to the bracket connecting rod 632, and the other two ends of the first bracket 631 are respectively connected to the first support member 61 and the side panel 4. In this embodiment, the first component of the first support member 61 is bent in a direction close to the second support member 62, and the second support member 62 is inclined in the direction of the first support member 61, so that the height of the side panel 4 connected to the support assembly 6 is reduced, and the height of the seat frame set on the side panel is reduced.

[0044] Specifically, the extension assembly 2 further includes a seat linkage assembly 64, which includes a first linkage rod 641, a rotating linkage rod 642, and a second linkage rod 643. One end of the first linkage rod 641 is connected to the middle of the first support member 61, and the other end is connected to the rotating linkage rod 642. The rotating linkage rod 642 is connected to the second linkage rod 64, and the second linkage rod 643 is used to connect to the third linkage rod 513 of the leg mechanism 5. The seat linkage assembly is used to link with the leg mechanism and the support assembly 6 during the extension and retraction process of the leg mechanism, wherein the rotating linkage rod 642 reciprocates around its connection point with the side plate.

[0045] In this embodiment, when the leg mechanism 5 is retracted to the extreme position, the height of the highest point of the seat frame 3 from the ground is less than 28 cm. When the leg mechanism 5 is retracted to the extreme position, the height of the connecting surface 533 of the auxiliary footrest 532 from the ground is greater than 8 cm. In some embodiments, when the leg mechanism 5 is retracted to the extreme position, the height of the seat frame 3 from the ground can be 20, 22, 24, 26 or 28 cm. When the leg mechanism 5 is retracted to the extreme position, the height of the connecting surface 533 from the ground can reach 8, 9, 10 or 12 cm. Preferably, in this embodiment, when the leg mechanism 5 is retracted to the extreme position, the distance between the seat frame 3 and the ground, that is, the seat height of the sofa extension bracket is 26 cm, and the distance between the connecting surface 533 of the auxiliary footrest 532 and the ground is 9 cm. When the leg mechanism 5 extends forward from the seat frame 3, the auxiliary footrest 532 and the auxiliary footrest board fixed thereon will not scratch the ground. When the leg mechanism 5 is extended to the extreme position, the height from the connecting surface 533 of the auxiliary footrest 532 to the ground is greater than 40 cm, preferably 43, 45 or 55 cm.

[0046] Specifically, the side panel 4 includes a side panel body 41 and a backrest connecting end 42 . The side panel body 41 is connected to the seat frame 3 , and the backrest connecting end 42 is used to connect to the backrest mechanism 7 .

[0047] Specifically, it also includes a backrest mechanism 7, which includes a back mounting member 71 and a back connecting rod 72; the back mounting member 71 is provided with a first transfer point 711 and a second transfer point 712, the back mounting member 71 is connected to the backrest connecting end 42 via the first transfer point 711, and the back mounting member 71 is connected to the back connecting rod 72 via the second transfer point 712; one end of the back connecting rod 72 is connected to the back mounting member 71, and the other end of the back connecting rod 72 is connected to the base 1.

[0048] Specifically, when the leg mechanism 5 is extended to the extreme position, the distance from the auxiliary footrest 532 to the first transfer point 711 is not less than 100 cm.

[0049] Specifically, in the embodiment of the present invention, the base 1 includes a rear frame and two side frames, and the extension components 2 are two groups and are symmetrically arranged on the two side frames. Generally, a plurality of feet are also arranged under the base, and the base is supported on a plane by the feet. The height of the feet is generally 2 cm, or other dimensions that can meet the seat height requirements.

[0050] Specifically, in this embodiment, the seat frame 3 includes a support frame 31 and a support pad 32. The support frame 31 is connected to the side panel 4. The side panel 4 is provided with a plurality of folding surfaces folded outward. The support frame 31 is fixed to the folding surfaces by fasteners. The height of the folding surfaces is lower than the upper edge of the side panel 4. Preferably, the seat height of the seat frame 3 after being covered with the sofa soft pad is 40cm-45cm. In this embodiment, the seat height of the seat frame 3 after being covered with the sofa soft pad is 43cm. Compared with the existing sofas with extension function, which generally have a seat height greater than 50cm, the seat height of the extension bracket in this embodiment is more comfortable and more suitable for the height of Asians.

[0051] The extension bracket of the present invention can realize three postures: sitting, leisure and lying. The extension direction of the leg mechanism 5 is defined as forward, and the contraction direction is defined as backward. In the sitting state, the leg mechanism 5 contracts to the limit position below the seat frame 3, and the backrest mechanism 7 remains basically upright; when the extension bracket is adjusted from the sitting position to the leisure position, the driving assembly drives the connecting rod assembly 51 to extend forward and upward relative to the seat frame 3, and at the same time drives the seat linkage assembly 64, the support assembly 6, the side panel 4, the seat frame 3 and the backrest mechanism 7 to move forward relative to the base 1; when adjusting from the leisure position to the lying state, the leg mechanism 5 continues to be lifted upward, so that the backrest mechanism 7 rotates and extends backward relative to the base 1 to realize the lying state.

[0052] Example 2

[0053] like Figure 6-7 As shown, the present invention further provides a sofa, comprising a backrest frame 70, an armrest connecting frame 8, an armrest frame 80 and the extension bracket, wherein the extension bracket comprises two extension components 2, which are symmetrically arranged along the central plane of the base 1, and the extension components 2 are used to change the relative positions of the leg mechanism 5 and the backrest mechanism 7 under the drive of the driving component 9;

[0054] The armrest connecting frame 8 is connected to the armrest frame 80, and the armrest connecting frame 8 is connected to the base 1 and is arranged on one side or both sides of the base 1. The backrest frame, armrest frame and seat frame 3 are used to support the sofa soft bag.

[0055] Specifically, the driving assembly 9 includes a motor assembly 91 and a driving connecting rod 92; both ends of the driving connecting rod 92 are respectively connected to the two first connecting rods 511, one end of the motor assembly 91 is hinged to the driving connecting rod 92, and the other end of the motor assembly 91 is hinged to the rear frame of the base 1 through a mounting member. The driving assembly 9 is used to drive the extension assembly 2 to extend or retract.

[0056] In some embodiments, the armrest frame 80 is supported on the ground by a tripod. Preferably, the height of the tripod is substantially the same as the height of the lower edge of the main footrest 52 from the ground when the leg mechanism is retracted to the extreme position, making the sofa look modern and simple.

[0057] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modification, equivalent substitution, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A sofa extension bracket, characterized in that: It comprises a base (1), an extension component (2) and a seat frame (3), wherein the extension component (2) is connected to the base (1), and the extension component (2) comprises a side panel (4), a leg mechanism (5) and a support component (6); The leg mechanism (5) comprises a connecting rod assembly (51) and a main footrest (52), wherein a first connecting rod (511) of the connecting rod assembly (51) is connected to a second connecting rod (512), and a third connecting rod (513), a fourth connecting rod (514), a fifth connecting rod (515) and a sixth connecting rod (516) of the connecting rod assembly (51) are connected in sequence, wherein the first connecting rod (511) and the third connecting rod (513) are respectively connected to the side plate (4), the middle parts of the first connecting rod (511) and the second connecting rod (512) are respectively cross-connected to the middle parts of the fourth connecting rod (514) and the fifth connecting rod (515), and the second connecting rod (512) and the sixth connecting rod (516) are connected to the main footrest (52); The leg mechanism (5) further comprises an extension component (53), the extension component (53) comprising a connecting rod (531) and an auxiliary footrest (532); the auxiliary footrest (532) is connected to the main footrest (52), one end of the connecting rod (531) is connected to the sixth connecting rod (516), and the other end of the connecting rod (531) is connected to the auxiliary footrest (532); The support assembly (6) comprises a first support member (61), a second support member (62) and a bracket assembly (63); the first support member (61) and the second support member (62) are connected to the side panel (4) via the bracket assembly (63); the seat frame (3) is arranged on the side panel (4); and the height from the highest point of the seat frame (3) to the ground is less than 28 cm; The bracket assembly (63) comprises a first bracket (631), a bracket connecting rod (632) and a second bracket (633); one end of the first bracket (631) is connected to the first support member (61); the other end of the first bracket (631) is connected to the side plate (4); one end of the bracket connecting rod (632) is connected to the middle part of the first bracket (631); the other end is connected to the second bracket (633); the second bracket (632) is respectively connected to the side plate (4) and the second support member (62).

2. A sofa extension bracket according to claim 1, characterized in that: The first support member (61) comprises an integrally formed first component (611) and a second component (612); the first component (611) is bent in a direction close to the second support member (62) and forms a certain angle with the second component (612); the second component (612) is connected to the base (1).

3. The sofa extension bracket according to claim 1, characterized in that: The first bracket (631) is a V-shaped structure, the lower vertex of the first bracket (631) is connected to the bracket connecting rod (632), and the other two ends of the first bracket (631) are respectively connected to the first support member (61) and the side plate (4).

4. The sofa extension bracket according to claim 1, characterized in that: The side panel (4) comprises a side panel body (41) and a backrest connecting end (42); the side panel body (41) is connected to the seat frame (3); and the backrest connecting end (42) is used to connect to a backrest mechanism (7).

5. The sofa extension bracket according to claim 4, characterized in that: Also included is a backrest mechanism (7), wherein the backrest mechanism (7) comprises a backrest mounting member (71) and a backrest linkage rod (72); The back mounting member (71) is provided with a first transfer point (711) and a second transfer point (712); the back mounting member (71) is connected to the backrest connecting end (42) via the first transfer point (711); and the back mounting member (71) is connected to the back linkage rod (72) via the second transfer point (712); One end of the back linkage rod (72) is connected to the back mounting component (71), and the other end of the back linkage rod (72) is connected to the base (1).

6. The sofa extension bracket according to claim 1, characterized in that: The auxiliary footrest member (532) is connected to the auxiliary footrest plate via a connecting surface (533).

7. The sofa extension bracket according to claim 6, characterized in that: When the leg mechanism (5) is retracted to the extreme position, the height from the connection surface (533) of the auxiliary footrest (532) to the ground is greater than 8 cm; when the leg mechanism (5) is extended to the extreme position, the height from the connection surface (533) of the auxiliary footrest (532) to the ground is greater than 40 cm.

8. The sofa extension bracket according to claim 6, characterized in that: When the leg mechanism (5) is extended to the extreme position, the distance between the auxiliary footrest (532) and the first transfer point (711) is not less than 100 cm.

9. A sofa, characterized in that: It comprises a backrest frame (70), an armrest connecting frame (8), an armrest frame (80), and an extension bracket according to any one of claims 1 to 8; The extendable bracket comprises two extendable components (2) which are symmetrically arranged along the central plane of the base (1); the extendable components (2) are used to change the relative positions of the leg mechanism (5) and the backrest mechanism (7) under the drive of the drive component (9); The armrest connecting frame (8) is connected to the armrest frame (80), and the backrest frame (70), the armrest frame (80) and the seat frame (3) are used to support the sofa soft bag.

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