Rocking sofa underframe and rocking sofa rack

Abstract

The utility model relates to the technical field of furniture, in particular to a swing sofa chassis and a swing sofa rack, the swing sofa chassis comprises a bottom frame and two groups of swing components symmetrically arranged on the bottom frame; the swing assembly comprises a front fixing rod, a rear fixing rod, a front swing rod, a rear swing rod and a mounting plate, the front fixing rod and the rear fixing rod are arranged on the bottom frame in a front-back spaced mode, the front swing rod and the rear swing rod are hinged to the front fixing rod and the rear fixing rod respectively, and the mounting plate is hinged to the front swing rod and the rear swing rod at the same time; and the mounting plate can swing back and forth relative to the bottom frame. By arranging the front fixing rod, the rear fixing rod, the front swing rod, the rear swing rod and the mounting plate, the structure of each part is simplified, the structure of the swing assembly is simpler, assembly is convenient, and the manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and particularly relates to a swing sofa chassis and a swing sofa frame. Background Art

[0002] In people's daily life, sofas have become a very common piece of furniture. Compared with wooden seats, sofas can provide people with more comfort. With the continuous improvement of people's living standards, people's requirements for furniture are also getting higher and higher, and ordinary and single-functional sofas will gradually be abandoned by people. More and more people tend to choose single sofas that offer infinite comfort.

[0003] The structure of the single sofas in the prior art is relatively simple. Generally, it can only adjust the sitting posture of the user by relying on an extension and retraction frame, that is, switch between a lying posture and a normal sitting posture. In order to improve the comfort of the user, some single sofas also have the function of swinging back and forth. However, for the existing sofas with the function of swinging back and forth, the structures of their swing bases are relatively complex; for example, in the Chinese invention patent application with the publication number CN114129009A, the disclosed swing assembly has a complex structure, and the shapes of the mounting plate and the swing rod are also relatively complex and peculiar, so the manufacturing cost and the installation cost are both relatively high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a swing sofa chassis and a swing sofa frame, aiming to solve the technical problem that the swing base structure of the sofas with the function of swinging back and forth in the prior art is complex and the manufacturing cost is relatively high.

[0005] To achieve the above purpose, the utility model provides a swing sofa chassis, which includes a bottom frame and two groups of swing components symmetrically arranged on the bottom frame; the swing component includes a front fixing rod, a rear fixing rod, a front swing rod, a rear swing rod and a mounting plate. The front fixing rod and the rear fixing rod are arranged at intervals front and rear and installed on the bottom frame. The front swing rod and the rear swing rod are respectively hinged to the front fixing rod and the rear fixing rod, and the mounting plate is simultaneously hinged to the front swing rod and the rear swing rod, so that the mounting plate can swing back and forth relative to the bottom frame.

[0006] Preferably, the swing component further includes a front limit piece and a rear limit piece. The front limit piece is installed on one side of the front end of the front fixing rod and extends to the front of the front swing rod; the rear limit piece is installed on one side of the rear end of the rear fixing rod and extends to the rear of the rear swing rod.

[0007] Preferably, the upper and lower ends of the front swing rod extend backward to form bent parts, and the upper and lower ends of the rear swing rod extend forward to form bent parts; the upper and lower ends of the front swing rod are respectively hinged to the front fixed rod and the mounting plate, and the upper and lower ends of the rear swing rod are respectively hinged to the rear fixed rod and the mounting plate; during the forward and backward swinging process of the front swing rod and the rear swing rod, the front limiting piece and the rear limiting piece can respectively abut against the bent parts of the front swing rod and the rear swing rod.

[0008] Preferably, the front swing rod, the rear swing rod and the mounting plate are all on the outer side of the bottom frame.

[0009] Preferably, the bottom frame includes a left bottom rod, a right bottom rod, a front connecting rod and a rear connecting rod, the left bottom rod and the right bottom rod are arranged at intervals left and right, and the front connecting rod and the rear connecting rod are arranged at intervals front and rear;

[0010] Both ends of the front connecting rod and both ends of the rear connecting rod are respectively connected to the left bottom rod and the right bottom rod; the lower end of the front fixed rod is fixed at the connection of the left bottom rod / the right bottom rod and the front connecting rod, and the lower end of the rear fixed rod is fixed at the connection of the left bottom rod / the right bottom rod and the rear connecting rod; or,

[0011] The lower ends of the front fixed rod and the rear fixed rod in the two swing assemblies are respectively connected to the left bottom rod and the right bottom rod, both ends of the front connecting rod are detachably connected to the two front fixed rods, and both ends of the rear connecting rod are respectively detachably connected to the two rear fixed rods.

[0012] On the other hand, the present invention also provides a rocking sofa frame, which includes a base frame and the above-mentioned rocking sofa bottom frame, and the left and right ends of the base frame are respectively installed on the mounting plates of the two swing assemblies.

[0013] Preferably, the base frame includes:

[0014] A main body frame, which is detachably installed on the mounting plates of the two swing assemblies;

[0015] A driving mechanism, which is installed on the main body frame;

[0016] A linkage hinge mechanism, which is movably installed on the main body frame and connected to the output end of the driving mechanism;

[0017] A leg rest bracket, which is installed at one end of the linkage hinge close to the front of the main body frame;

[0018] A backrest bracket, which is detachably installed at one end of the linkage hinge mechanism close to the rear of the main body frame;

[0019] The driving mechanism can drive the linkage hinge mechanism to extend or contract, thereby adjusting the lifting or retracting of the leg rest bracket and adjusting the angle between the backrest bracket and the main body frame.

[0020] Preferably, the main body frame includes a left frame, a right frame, a first cross bar, a second cross bar, and a third cross bar. The left frame and the right frame are opposite and spaced apart; both ends of the first cross bar are connected to the left frame and the right frame respectively and are located in front of the leg rest bracket. Both ends of the second cross bar are connected to the left frame and the right frame respectively and are located behind the backrest bracket. Both ends of the third cross bar are connected to the left frame and the right frame respectively and are located below the second cross bar; the driving mechanism is installed on the third cross bar.

[0021] Preferably, the linkage hinge mechanism includes a connecting cross bar, a left hinge assembly, and a right hinge assembly. The left hinge assembly is movably installed on the left frame, the right hinge assembly is movably installed on the right frame. The connecting cross bar is connected to the output end of the driving mechanism, and both ends are respectively connected to the left hinge assembly and the right hinge assembly. The left hinge assembly and the right hinge assembly have the same structure.

[0022] Preferably, the left hinge assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a long rod, and a left connecting plate; one end of the first connecting rod and one end of the second connecting rod are both rotatably connected to the left frame. The other end of the first connecting rod is rotatably connected to one end of the third connecting rod. The other end of the second connecting rod is rotatably connected to one end of the fourth connecting rod. The third connecting rod and the fourth connecting rod are rotatably connected. The other ends of the third connecting rod and the fourth connecting rod are connected to the leg rest bracket; one end of the long rod is rotatably connected to the second connecting rod, and the other end is rotatably connected to the left connecting plate. The left connecting plate is rotatably connected to the left frame and is connected to the backrest bracket; one end of the connecting cross bar is connected to the second connecting rod.

[0023] The swing sofa chassis and the swing sofa frame of the present utility model have at least the following beneficial effects: By providing a front fixing rod, a rear fixing rod, a front swing rod, a rear swing rod, and a mounting plate, the structure of each component is simplified, and further the structure of the swing assembly is more simple, thus facilitating assembly and saving manufacturing costs. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0025] Figure 1 Structural schematic diagram of the swing sofa chassis of the present invention;

[0026] Figure 2 Structural schematic diagram of another embodiment of the swing sofa chassis of the present invention;

[0027] Figure 3 Structural schematic diagram of the swing sofa frame of the present invention after removing the leg rest bracket and the backrest bracket;

[0028] Figure 4 Structural schematic diagram of the base frame of the present invention;

[0029] Figure 5 Structural schematic diagram of the main body frame of the present invention;

[0030] Figure 6 Exploded structural schematic diagram of the main body frame of the present invention;

[0031] Figure 7 Structural schematic diagram of the drive mechanism and the linkage hinge mechanism of the present invention;

[0032] Figure 8 Structural schematic diagram of the left hinge assembly of the present invention;

[0033] Figure 9 Structural schematic diagram of the backrest bracket of the present invention;

[0034] Figure 10 Structural schematic diagram of the backrest bracket of the present invention from another angle.

[0035] In the drawings: 1 - bottom frame, 11 - left bottom rod, 12 - right bottom rod, 13 - front connecting rod, 14 - rear connecting rod, 2 - swing assembly, 21 - front fixing rod, 22 - rear fixing rod, 23 - front swing rod, 24 - rear swing rod, 25 - mounting plate, 26 - front limiting piece, 27 - rear limiting piece, 3 - base frame, 31 - main body frame, 311 - left side frame, 312 - right side frame, 313 - first cross bar, 314 - second cross bar, 315 - third cross bar, 32 - drive mechanism, 321 - drive motor, 322 - screw rod, 323 - moving housing, 33 - linkage hinge mechanism, 331 - connecting cross bar, 332 - left hinge assembly, 3321 - first connecting rod, 3322 - second connecting rod, 3323 - third connecting rod, 3324 - fourth connecting rod, 3325 - long rod, 3326 - left connecting plate, 3327 - fixing plate, 333 - right hinge assembly, 34 - leg support bracket, 35 - backrest bracket, 351 - left mounting plate, 3511 - left slot, 352 - right mounting plate, 3521 - right slot.

[0036] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings in combination with embodiments. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, rear,...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] Please refer to Figure 1 and Figure 2 , a swing sofa chassis, comprising a bottom frame 1 and two groups of swing components 2. The two groups of swing components 2 have the same structure and are symmetrically arranged on the left and right sides of the bottom frame 1. The bottom frame 1 is placed on the ground as the base of the entire swing sofa, and the swing components 2 are used to achieve the front-back swing of the sofa.

[0041] The swing component 2 includes a front fixing rod 21, a rear fixing rod 22, a front swing rod 23, a rear swing rod 24 and a mounting plate 25. The front fixing rod 21 and the rear fixing rod 22 have the same structure, are parallel to each other, and are arranged at intervals in the front and rear on the bottom frame 1; the front fixing rod 21 and the rear fixing rod 22 are perpendicular to the bottom frame 1, and their lower ends are fixedly connected to the bottom frame 1. The front swing rod 23 and the rear swing rod 24 have the same structure. The upper end of the front swing rod 23 is hinged to the upper half of the front fixing rod 21 through a rotating shaft, and the upper end of the rear swing rod 24 is hinged to the upper half of the rear fixing rod 22 through a rotating shaft. The front end of the mounting plate 25 is hinged to the lower end of the front swing rod 23 through a rotating shaft, and the rear end of the mounting plate 25 is connected to the lower end of the rear swing rod 24 through a rotating shaft. The mounting plate 25 is used to mount the base frame 3 of the sofa. The mounting plate 25 can swing back and forth relative to the chassis when the front swing rod 23 and the rear swing rod 24 swing back and forth synchronously, so as to achieve the front-back swing of the sofa.

[0042] In this technical solution, by setting the front fixing rod 21, the rear fixing rod 22, the front swing rod 23, the rear swing rod 24 and the mounting plate 25, the structure of each component is simplified, and then the structure of the swing component 2 is made more simple, thus facilitating assembly and saving manufacturing costs.

[0043] Please refer to Figure 1 and Figure 2, the swing assembly 2 further includes a front limit piece 26 and a rear limit piece 27. The front limit piece 26 and the rear limit piece 27 are respectively used to limit the upward continuous swing of the front swing rod 23 and the backward continuous swing of the rear swing rod 24. The front limit piece 26 and the rear limit piece 27 have the same structure, both being sheet-like structures. Among them, the front limit piece 26 is installed on one side of the front end of the front fixing rod 21 and extends to the front of the front swing rod 23; when the front swing rod 23 swings forward to a certain extent, the front limit piece 26 will resist the front swing rod 23 to limit the continuous forward swing of the front swing rod 23. The rear limit piece 27 is installed on one side of the rear end of the rear fixing rod 22 and extends to the rear of the rear swing rod 24; when the rear swing rod 24 swings backward to a certain extent, the rear limit piece 27 will resist the rear swing rod 24 to limit the continuous backward swing of the rear swing rod 24. Through the settings of the front limit piece 26 and the rear limit piece 27, the amplitude of the front and rear swing of the sofa can be limited, ensuring the safety of the swing. In addition, both the front limit piece 26 and the rear limit piece 27 are sheet-like structures independent of the front fixing rod 21, the front swing rod 23, the rear fixing rod 22, and the rear swing rod 24. Therefore, the structures of all components of the entire swing assembly 2 are relatively simple, and the manufacturing cost is low.

[0044] Please refer to Figure 1 and Figure 2 , the upper and lower ends of the front swing rod 23 extend backward to form bent parts. The upper and lower ends of the front swing rod 23 are respectively hinged to the front fixing rod 21 and the mounting plate 25; during the forward swing process of the front swing rod 23, the front limit piece 26 can abut against the bent part of the front swing rod 23 to limit the continuous forward swing of the front swing rod 23. Similarly, the upper and lower ends of the rear swing rod 24 extend forward to form bent parts. The upper and lower ends of the rear swing rod 24 are respectively hinged to the rear fixing rod 22 and the mounting plate 25; during the forward and backward swing processes of the front swing rod 23 and the rear swing rod 24, the rear limit piece 27 can abut against the bent part of the rear swing rod 24 to limit the continuous forward swing of the rear swing rod 24. In this embodiment, both the front swing rod 23 and the rear swing rod 24 are set as bent parts, which can increase the amplitude of the front and rear swing of the sofa on the premise of limiting the amplitude of the front and rear swing; and the front limit piece 26 and the rear limit piece 27 abut against the bent parts of the bent plate, making the forces received by the front swing rod 23 and the rear swing rod 24 easier to disperse, ensuring the stability of the structure.

[0045] Please refer to Figure 1 and Figure 2, the front swing rod 23, the rear swing rod 24 and the mounting plate 25 are all on the outer side of the bottom frame 1. The mounting plates 25 of the two sets of swing assemblies 2 are all used to mount the base frame 3 of the sofa. The front swing rod 23, the rear swing rod 24 and the mounting plate 25 of one set of swing assemblies 2 are located on the left side of the bottom frame 1, and the front swing rod 23, the rear swing rod 24 and the mounting plate 25 of the other set of swing assemblies 2 are located on the right side of the bottom frame 1. Therefore, after the base frame 3 is mounted on the mounting plate 25, the entire swing sofa bottom frame is located inside the base frame 3. So, when the volume of the base frame 3 is the same, the bottom frame of this embodiment has a smaller volume, occupies a smaller area, and has a lower manufacturing cost. Moreover, the swing assembly 2 is hidden inside the base frame 3, which can improve the use safety, prevent the external environment from interfering with the swing assembly 2, and ensure the normal use of the front and rear swing functions.

[0046] Please refer to Figure 1 and Figure 2 , the bottom frame 1 includes a left bottom rod 11, a right bottom rod 12, a front connecting rod 13 and a rear connecting rod 14. The left bottom rod 11 and the right bottom rod 12 have the same structure, and the length direction is the front-rear extension direction. The two are parallel to each other and are arranged at intervals left and right. The front connecting rod 13 and the rear connecting rod 14 have the same structure, and the length direction is the left-right extension direction. The two are parallel to each other and are arranged at intervals front and rear.

[0047] Please refer to Figure 1, in an embodiment of the bottom frame 1, both ends of the front connecting rod 13 are respectively connected and fixed to the left bottom rod 11 and the right bottom rod 12, and the front connecting rod 13 is perpendicular to the left bottom rod 11 and the right bottom rod 12. Both ends of the rear connecting rod 14 are respectively connected and fixed to the left bottom rod 11 and the right bottom rod 12, and the rear connecting rod 14 is perpendicular to the left bottom rod 11 and the right bottom rod 12. The lower end of the front fixing rod 21 in the swing assembly 2 on the left side is connected and fixed to the connection between the left bottom rod 11 and the front connecting rod 13, that is, the lower end of the front fixing rod 21 is simultaneously connected to the left bottom rod 11 and the front connecting rod 13. The lower end of the rear fixing rod 22 in the swing assembly 2 on the left side is connected and fixed to the connection between the left bottom rod 11 and the rear connecting rod 14, that is, the lower end of the rear fixing rod 22 is simultaneously connected to the left bottom rod 11 and the rear connecting rod 14. The lower end of the front fixing rod 21 in the swing assembly 2 on the right side is connected and fixed to the connection between the right bottom rod 12 and the front connecting rod 13, that is, the lower end of the front fixing rod 21 is simultaneously connected to the right bottom rod 12 and the front connecting rod 13. The lower end of the rear fixing rod 22 in the swing assembly 2 on the right side is connected and fixed to the connection between the right bottom rod 12 and the rear connecting rod 14, that is, the lower end of the rear fixing rod 22 is simultaneously connected to the right bottom rod 12 and the rear connecting rod 14. The structure of the bottom frame 1 is also relatively simple, and the setting of the fixing positions of the front fixing rod 21 and the rear fixing rod 22 can improve the structural stability of the swing sofa bottom frame. In this embodiment, both ends of the front connecting rod 13 can be welded and fixed to the left bottom rod 11 and the right bottom rod 12, and both ends of the rear connecting rod 14 can be welded and fixed to the left bottom rod 11 and the right bottom rod 12 to improve the structural stability; in addition, both ends of the front connecting rod 13 can also be detachably connected to the left bottom rod 11 and the right bottom rod 12 by means such as screwing, and both ends of the rear connecting rod 14 can also be detachably connected to the left bottom rod 11 and the right bottom rod 12 by means such as screwing to facilitate disassembly and reduce the packaging volume.

[0048] Please refer to Figure 2, in another embodiment of the bottom frame 1, the lower ends of the front fixing rods (21) in the two sets of the swing assemblies (2) are respectively connected to the left bottom rod (11) and the right bottom rod (12), and specifically, they can be fixedly connected by welding or detachably fixed. The lower ends of the rear fixing rods (22) in the two sets of the swing assemblies (2) are respectively connected to the left bottom rod (11) and the right bottom rod (12), and specifically, they can be fixedly connected by welding or detachably fixed. The two ends of the front connecting rod (13) are respectively detachably connected to the front fixing rods (21) in the two sets of the swing assemblies (2), and specifically, the front connecting rod 13 and the front fixing rod 21 can be connected and fixed by screwing. Similarly, the two ends of the rear connecting rod (14) are respectively detachably connected to the rear fixing rods (22) in the two sets of the swing assemblies (2), and similarly, the rear connecting rod 13 and the rear fixing rod 21 can be connected and fixed by screwing. In this embodiment, the front connecting rod (13) and the rear connecting rod (14) are set to be detachable relative to the front fixing rod (21) and the rear fixing rod (22), so the front connecting rod (13) and the rear connecting rod (14) can be removed during packaging, thereby reducing the packaging volume.

[0049] On the other hand, please refer to Figure 3 , a swing sofa frame, including a base frame 3 and a swing sofa bottom frame. The left and right ends of the base frame 3 are respectively installed on the mounting plates 25 of the two sets of swing assemblies 2. The two sets of swing assemblies 2 simultaneously realize the front and rear swing of the base frame 3.

[0050] Please refer to Figure 4 , the sofa base frame 3 includes a main body frame 31, a driving mechanism 32, a linkage hinge mechanism 33, a leg rest bracket 34 and a backrest bracket 35.

[0051] The main frame 31 is the main part of the rocking sofa frame. Its shape is a frame structure. In the finished sofa, the main frame 31 also serves as the seat frame for the user to sit on. The main frame 31 is made of metal material to ensure the stability of the sofa frame structure. The main frame 31 is detachably installed on the mounting plate 25 of the rocking assembly 2. The drive mechanism 32 is installed on the main frame 31. The drive mechanism 32 is used to drive the linkage hinge mechanism 33 to extend or contract. The linkage hinge mechanism 33 is movably installed on the main frame 31 and is connected to the output end of the drive mechanism 32. The leg rest bracket 34 is installed at one end of the linkage hinge mechanism 33 close to the front of the main frame 31. The leg rest bracket 34 serves as the main bracket of the leg rest in the finished sofa and supports the user's legs during use. The backrest bracket 35 is detachably installed at one end of the linkage hinge mechanism 33 close to the rear of the main frame 31. The backrest bracket 35 serves as the main bracket of the backrest in the finished sofa and provides support for the user's back and supports the upper body of the user during use. The drive mechanism 32 can drive the linkage hinge mechanism 33 to extend or contract. When the drive mechanism 32 drives the linkage hinge mechanism 33 to extend, the linkage hinge mechanism 33 can drive the leg rest bracket 34 to lift and at the same time increase the angle between the backrest bracket 35 and the main frame 31, so that the leg rest bracket 34 can support the user's legs and the backrest bracket 35 can support the lying user. By setting the drive mechanism 32 or setting the linkage hinge mechanism 33, the effect of a "zero gravity" sofa can be achieved.

[0052] For existing functional sofas, the structures are relatively complex, the production processes are rather cumbersome, the packaging volume is large, the container loading capacity is small, and both the production cost and the transportation cost are high. However, in this technical solution, by setting the frame-type main frame 31 and directly using the main frame 31 as the sofa main body and seat frame, the traditional wooden frame structure is omitted. Therefore, the overall structure is simpler, the production process is simpler, the manufacturing cost is lower, the product has good stability, and the weight of the whole product is lighter. The backrest bracket 35 is detachably designed relative to the main frame 31. Therefore, when packaging, the backrest bracket 35 can be removed and placed at the bottom of the main frame 31 for installation, making full use of the internal space of the main frame 31. The packaging volume of the product is greatly reduced, thereby increasing the container loading capacity and reducing the transportation cost.

[0053] Please refer to Figure 5, the main frame 31 includes a left frame 311, a right frame 312, a first crossbar 313, a second crossbar 314 and a third crossbar 315. The left frame 311 and the right frame 312 have the same structure and are symmetrically arranged; both the left frame 311 and the right frame 312 are quadrilateral frame structures composed of four rods; the left frame 311 and the right frame 312 are opposite and spaced apart. Specifically, the lower end of the left frame 311 is detachably connected to the mounting plate 25 of the left swing assembly 2, and the lower end of the right frame 312 is detachably connected to the mounting plate 25 of the right swing assembly 2. One end of the first crossbar 313 is connected to the front corner at the upper end of the left frame 311, and the other end of the first crossbar 313 is connected to the front corner at the upper end of the right frame 312. One end of the second crossbar 314 is connected to the rear corner at the upper end of the left frame 311, and the other end of the second crossbar 314 is connected to the rear corner at the upper end of the right frame 312. The first crossbar 313 and the second crossbar 314 are spaced apart and parallel to each other. The leg rest bracket 34 is close to the front of the left frame 311 and the right frame 312, and the backrest bracket 35 is close to the rear of the left frame 311 and the right frame 312. Both ends of the third crossbar 315 are connected to the left frame 311 and the right frame 312 respectively and are located below the second crossbar 314. The driving mechanism 32 is installed on the third crossbar 315, and the linkage hinge mechanism 33 is located between the left frame 311 and the right frame 312.

[0054] The structure of the main frame 31 is set like this, which can simplify the overall structure of the swing sofa frame and has good structural stability. The space utilization rate inside the main frame 31 is high, reducing the packaging volume of the product, increasing the container loading capacity, and thus reducing the transportation cost.

[0055] Please refer to Figures 5 to 6, in an embodiment of the present utility model, the main frame 31 is a detachable structure. Specifically, the left frame 311 and the right frame 312 are an integral frame structure. One end of the first cross bar 313 is detachably connected to the front upper corner of the left frame 311, and the other end of the first cross bar 313 is detachably connected to the front upper corner of the right frame 312. One end of the second cross bar 314 is detachably connected to the rear upper corner of the left frame 311, and the other end of the second cross bar 314 is detachably connected to the rear upper corner of the right frame 312. Both ends of the third cross bar 315 are detachably connected to the left frame 311 and the right frame 312 respectively. That is, the rods connecting the left frame 311 and the right frame 312 are all detachably connected to the left frame 311 and the right frame 312. Specifically, connection pieces can be welded at both ends of the first cross bar 313, the second cross bar 314, and the third cross bar 315, holes are opened on the connection pieces, and then holes are also opened at corresponding positions on the left frame 311 and the right frame 312. Then, the first cross bar 313, the second cross bar 314, and the third cross bar 315 are connected to the left frame 311 and the right frame 312 with connecting pieces (such as screws 322, bolts, etc.). By setting the main frame 31 to be detachable, it is convenient for unified production and manufacturing. Moreover, before assembly, the main frame 31 is smaller in volume, more convenient for transportation, has a larger loading capacity in the container, and lower transportation costs.

[0056] Of course, in other embodiments, the structures at the connection parts of the first cross bar 313, the second cross bar 314, and the third cross bar 315 with the left frame 311 and the right frame 312 can be other ways. For example, in a snap-fit manner, both ends of the first cross bar 313, the second cross bar 314, and the third cross bar 315 are directly snapped onto the left frame 311 and the right frame 312; or in a threaded connection manner, threads are provided at both ends of the first cross bar 313, the second cross bar 314, and the third cross bar 315, and can be directly screwed into the threaded holes on the left frame 311 and the right frame 312. The technical solution does not limit the detachable connection method of the main frame 31, as long as the first cross bar 313, the second cross bar 314, and the third cross bar 315 can be detachably connected to the left frame 311 and the right frame 312.

[0057] Please refer to Figure 7, Further, the linkage hinge mechanism 33 includes a connecting cross bar 331, a left hinge assembly 332, and a right hinge assembly 333. The left hinge assembly 332 and the right hinge assembly 333 have the same structure and are symmetrically arranged. The left hinge assembly 332 is movably installed on the left frame 311, and the right hinge assembly 333 is movably installed on the right frame 312. The connecting cross bar 331 is connected to the output end of the driving mechanism 32, and its two ends are respectively connected to the left hinge assembly 332 and the right hinge assembly 333. The driving mechanism 32 can push or pull the connecting cross bar 331 forward or backward. When the driving mechanism 32 pushes the connecting cross bar 331 forward, the left hinge assembly 332 and the right hinge assembly 333 extend synchronously, thereby lifting the leg rest bracket 34 and increasing the angle between the backrest bracket 35 and the main frame 31. When the driving mechanism 32 pulls the connecting cross bar 331 backward, the left hinge assembly 332 and the right hinge assembly 333 contract synchronously, thereby retracting the leg rest bracket 34 and decreasing the angle between the backrest bracket 35 and the main frame 31. By providing the left hinge assembly 332 and the right hinge assembly 333, the adjustment of the leg rest bracket 34 and the backrest bracket 35 is made smoother and more stable. The synchronous adjustment of the left hinge assembly 332 and the right hinge assembly 333 can be achieved through the connecting cross bar 331, and only one driving mechanism 32 needs to be provided, which not only reduces costs but also improves synchronism. The connecting cross bar 331 can also improve the structural stability of the left hinge assembly 332 and the right hinge assembly 333, ensuring the stability of the sofa adjustment.

[0058] As described above, the left hinge assembly 332 and the right hinge assembly 333 have the same structure; therefore, only the specific structure of the left hinge assembly 332 will be described in detail in this embodiment to avoid repeated description.

[0059] Please refer to Figure 8, specifically, the left hinge assembly 332 includes a first connecting rod 3321, a second connecting rod 3322, a third connecting rod 3323, a fourth connecting rod 3324, a long rod 3325, and a left connecting plate 3326. One end of the first connecting rod 3321 and one end of the second connecting rod 3322 are both rotatably connected to the left side frame 311. The other end of the first connecting rod 3321 is rotatably connected to one end of the third connecting rod 3323. One end of the second connecting rod 3322 is rotatably connected to one end of the fourth connecting rod 3324. The third connecting rod 3323 is rotatably connected to the fourth connecting rod 3324. The other ends of the third connecting rod 3323 and the fourth connecting rod 3324 are connected to the leg rest bracket 34. One end of the long rod 3325 is rotatably connected to the second connecting rod 3322, and the other end of the long rod 3325 is rotatably connected to the left connecting plate 3326. The left connecting plate 3326 is rotatably connected to the left side frame 311, and the left connecting plate 3326 is also connected to the backrest bracket 35. One end of the connecting cross bar 331 is connected to the second connecting rod 3322, and the other end of the connecting cross bar 331 is connected to the second connecting rod 3322 in the right hinge assembly 333. The structure of the left hinge assembly 332 provided in this embodiment can simultaneously realize the lifting or retraction of the leg rest bracket 34 and the angle adjustment of the backrest bracket 35 through a simple structure.

[0060] Please refer to Figure 8 , the left hinge assembly 332 further includes a fixing plate 3327. One end of the first connecting rod 3321 and one end of the second connecting rod 3322 are both rotatably connected to the fixing plate 3327, and the fixing plate 3327 is fixedly connected to the left side frame 311; that is, one end of the first connecting rod 3321 and the second connecting rod 3322 are rotatably connected to the fixing plate 3327 to realize the connection between the first connecting rod 3321 and the second connecting rod 3322 and the left side frame 311. By providing the fixing plate 3327, it is convenient to assemble the left hinge assembly 332, and the structure of the left hinge assembly 332 is made more complete; moreover, it is more convenient to install the left hinge assembly 332 on the left side frame 311. On the other hand, the fixing plate 3327 connects the first connecting rod 3321 and the second connecting rod 3322, which can make the stretching and retracting actions of the left hinge assembly 332 smoother.

[0061] Please refer to Figure 7, Further, the driving mechanism 32 includes a driving motor 321, a screw 322, and a moving housing 323. The output end of the driving motor 321 is connected to one end of the screw 322 and is used to drive the screw 322 to rotate. The moving housing 323 is sleeved on the screw 322 and is threadedly connected to the screw 322. The driving motor 321 is installed on the third cross bar. One end of the moving housing 323 away from the driving motor 321 is connected to the linkage hinge mechanism 33, specifically connected to the middle position of the connecting cross bar 331. When the driving motor 321 rotates, it can drive the screw 322 to rotate around its central axis. When the screw 322 rotates, it can drive the moving housing 323 to move relative to the screw 322 along the vertical direction of the screw 322. The driving motor 321 can be controlled to rotate forward and backward, so the screw 322 can also rotate forward or backward. Under the action of the screw 322, the moving housing 323 can move in two directions, thereby realizing the extension or contraction of the linkage hinge mechanism 33.

[0062] Please refer to Figure 9 and Figure 10 , Further, a left mounting plate 351 is provided on the left side of the backrest bracket 35, and a right mounting plate 351 is provided on the right side of the backrest bracket 35. The left mounting plate 351 and the right mounting plate 351 have the same structure. A left slot 3511 is formed on the left mounting plate 351, and a right slot 3521 is formed on the right mounting plate 351. The left connecting plate 3326 is inserted into the left slot 3511, and a right connecting plate (not shown in the figure) in the right hinge assembly 333 is inserted into the right slot 3521. Through the structural design of the left mounting plate 351 and the right mounting plate 351, the detachable connection between the backrest bracket 35 and the main frame 31 can be realized. Therefore, when packaging, the backrest bracket 35 can be removed and placed at the bottom of the main frame 31 for packaging, making full use of the internal space of the main frame 31, greatly reducing the packaging volume of the product, thereby increasing the container loading capacity and reducing the transportation cost.

[0063] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A rocking sofa chassis, characterized in that, It includes a bottom frame (1) and two sets of swing components (2) symmetrically arranged on the bottom frame (1). The swing component (2) includes a front fixing rod (21), a rear fixing rod (22), a front swing rod (23), a rear swing rod (24) and a mounting plate (25). The front fixing rod (21) and the rear fixing rod (22) are arranged at intervals front and rear and mounted on the bottom frame (1). The front swing rod (23) and the rear swing rod (24) are respectively hinged to the front fixing rod (21) and the rear fixing rod (22), and the mounting plate (25) is simultaneously hinged to the front swing rod (23) and the rear swing rod (24), so that the mounting plate (25) can swing back and forth relative to the bottom frame (1).

2. The swing sofa chassis according to claim 1, characterized in that The swing component (2) further includes a front limiting piece (26) and a rear limiting piece (27). The front limiting piece (26) is mounted on one side of the front end of the front fixing rod (21) and extends to the front of the front swing rod (23); the rear limiting piece (27) is mounted on one side of the rear end of the rear fixing rod (22) and extends to the rear of the rear swing rod (24).

3. The swing sofa chassis according to claim 2, characterized in that, The upper and lower ends of the front swing rod (23) extend backward to form bent parts, and the upper and lower ends of the rear swing rod (24) extend forward to form bent parts; the upper and lower ends of the front swing rod (23) are respectively hinged to the front fixing rod (21) and the mounting plate (25), and the upper and lower ends of the rear swing rod (24) are respectively hinged to the rear fixing rod (22) and the mounting plate (25); during the front and rear swinging process of the front swing rod (23) and the rear swing rod (24), the front limiting piece (26) and the rear limiting piece (27) can respectively abut against the bent parts of the front swing rod (23) and the rear swing rod (24).

4. A rocking sofa chassis according to claim 1, characterized in that, The front swing rod (23), the rear swing rod (24) and the mounting plate (25) are all on the outer side of the bottom frame (1).

5. A swing sofa chassis according to claim 1, characterized in that, The bottom frame (1) includes a left bottom rod (11), a right bottom rod (12), a front connecting rod (13) and a rear connecting rod (14). The left bottom rod (11) and the right bottom rod (12) are arranged at intervals left and right, and the front connecting rod (13) and the rear connecting rod (14) are arranged at intervals front and rear; Both ends of the front connecting rod (13) and both ends of the rear connecting rod (14) are respectively connected to the left bottom rod (11) and the right bottom rod (12); the lower end of the front fixing rod (21) is fixed at the connection of the left bottom rod (11) / the right bottom rod (12) and the front connecting rod (13), and the lower end of the rear fixing rod (22) is fixed at the connection of the left bottom rod (11) / the right bottom rod (12) and the rear connecting rod (14); or, The lower ends of the front fixing rods (21) and the rear fixing rods (22) in the two sets of the swing assemblies (2) are respectively connected to the left bottom rod (11) and the right bottom rod (12). The two ends of the front connecting rod (13) are respectively detachably connected to the two front fixing rods (21), and the two ends of the rear connecting rod (14) are respectively detachably connected to the two rear fixing rods (22).

6. A rocking sofa frame, characterized in that, It includes a base frame (3) and the swing sofa bottom frame according to any one of claims 1 to 5. The left and right ends of the base frame (3) are respectively installed on the mounting plates (25) of the two sets of the swing assemblies (2).

7. The swing sofa frame according to claim 6, characterized in that, The base frame (3) includes: A main body frame (31) which is detachably installed on the mounting plates (25) of the two sets of the swing assemblies (2); A driving mechanism (32) which is installed on the main body frame (31); A linkage hinge mechanism (33) which is movably installed on the main body frame (31) and is connected to the output end of the driving mechanism (32); A leg rest bracket (34) which is installed at one end of the linkage hinge close to the front of the main body frame (31); A backrest bracket (35) which is detachably installed at one end of the linkage hinge mechanism (33) close to the rear of the main body frame (31); The driving mechanism (32) can drive the linkage hinge mechanism (33) to extend or contract, thereby adjusting the raising or retracting of the leg rest bracket (34) and adjusting the angle between the backrest bracket (35) and the main body frame (31).

8. A rocking sofa frame according to claim 7, characterized in that, The main body frame (31) includes a left side frame (311), a right side frame (312), a first cross bar (313), a second cross bar (314) and a third cross bar (315). The left side frame (311) and the right side frame (312) are opposite and spaced apart. The two ends of the first cross bar (313) are respectively connected to the left side frame (311) and the right side frame (312) and are located in front of the leg rest bracket (34). The two ends of the second cross bar (314) are respectively connected to the left side frame (311) and the right side frame (312) and are located behind the backrest bracket (35). The two ends of the third cross bar (315) are respectively connected to the left side frame (311) and the right side frame (312) and are located below the second cross bar (314). The driving mechanism (32) is installed on the third cross bar (315).

9. A rocking sofa frame according to claim 8, characterized in that, The linkage hinge mechanism (33) includes a connecting cross bar (331), a left hinge assembly (332) and a right hinge assembly (333). The left hinge assembly (332) is movably installed on the left side frame (311), the right hinge assembly (333) is movably installed on the right side frame (312). The connecting cross bar (331) is connected to the output end of the driving mechanism (32) and its two ends are respectively connected to the left hinge assembly (332) and the right hinge assembly (333). The left hinge assembly (332) and the right hinge assembly (333) have the same structure.

10. A rocking sofa frame according to claim 9, characterized in that, The left hinge assembly (332) includes a first connecting rod (3321), a second connecting rod (3322), a third connecting rod (3323), a fourth connecting rod (3324), a long rod (3325) and a left connecting plate (3326); one end of the first connecting rod (3321) and one end of the second connecting rod (3322) are both rotatably connected to the left frame (311), the other end of the first connecting rod (3321) is rotatably connected to one end of the third connecting rod (3323), the other end of the second connecting rod (3322) is rotatably connected to one end of the fourth connecting rod (3324), the third connecting rod (3323) is rotatably connected to the fourth connecting rod (3324), the other end of the third connecting rod (3323) and the other end of the fourth connecting rod (3324) are connected to the leg rest bracket (34); one end of the long rod (3325) is rotatably connected to the second connecting rod (3322), and the other end is rotatably connected to the left connecting plate (3326), the left connecting plate (3326) is rotatably connected to the left frame (311) and is connected to the backrest bracket (35); one end of the connecting cross bar (331) is connected to the second connecting rod (3322).

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