A sofa suspension mechanism and use method thereof

Abstract

A sofa suspension mechanism comprises two suspension units on a base plate 1, wherein the two suspension units are respectively connected to the base plate 1, and the two suspension units respectively form a polygonal structure of at least three sides with the base plate, and the two polygonal structures of at least three sides are respectively connected to the base plate to form one side of the polygon of the three sides, and the two suspension units are connected by at least one connecting rod to limit and link the movement trajectories of the two suspension units.

Description

Technical Field

[0001] The present invention relates to a suspension mechanism of a sofa and a method for using the same. Specifically, the present application relates to the field of sofas, and more specifically to a suspension mechanism and a method for using the same in the field of functional sofas. Background Art

[0002] The characteristic of sofas, specifically functional sofas, is that users can meet the needs of different usage scenarios by adjusting different sitting postures. According to the usage scenarios of functional sofas, they are generally divided into: Sitting posture: the backrest mechanism and the leg mechanism are both in a folded state, and the sofa presents the state of an ordinary sofa, so as to meet the user's sitting needs. TV posture: In the sitting posture, the leg mechanism is unfolded so that the leg mechanism provides sufficient support for the user's legs, while the back mechanism remains motionless or slightly tilted. Lying posture: In the TV posture, the back mechanism is tilted, and the other mechanisms of the sofa, specifically the seat frame mechanism of the sofa, are translated in the opposite direction of the back mechanism through the suspension mechanism, so that the fallen backrest mechanism will not move directly backwards, so as to achieve the purpose of zero leaning against the wall. Therefore, the suspension mechanism of the sofa plays a very critical role in the functional sofa.

[0003] The existing technology mainly adopts a linkage suspension translation system. Figure 1 As shown, two parallelogram-like mechanisms are interconnected to achieve a translation effect. Figure 1 The schematic diagram of the structure of a known link type suspension mechanism is a mechanical extension device of a link type suspension translation system. The link type suspension mechanism consists of a base plate 1', one end of the base plate 1' is movably hinged with one end of a first link 2', the proximal end of the other end of the base plate 1' is movably hinged with one end of a second link 4', and the top end of a third link 3' and the top end of a fourth link 5' are hinged at a position slightly above the middle of the other ends of the first link 2' and the second link 4', and the third link 3' and the fourth link 5' are not directly connected to the base plate 1'. In order to limit the movement trajectory of the first link 2', the second link 4', the third link 3' and the fourth link 5', a first connecting rod 6' is arranged between the other top end of the third link 3' and the other top end of the fourth link 5', and the top end of the first link 2' and the top end of the second link 4' are connected by a second connecting rod 8', and the second connecting rod 8' is not designed as a straight line, but a recessed connecting rod. A third connecting rod 7' is arranged between the fourth link 5' and the second connecting rod 8'. The first connecting rod 6', the second connecting rod 8' and the third connecting rod 7' are defined so that the suspension mechanism can move the functional sofa frame forward linearly, so that when the back mechanism is tilted, the space after tilting will not be increased. This makes it possible to place the functional sofa at a relatively close distance to the wall. The above-mentioned prior art link type suspension mechanism has been used in the field of functional sofa design.

[0004] like Figure 1 The suspension mechanism is arranged on the left and right sides of the seat frame of a sofa, especially a functional sofa. Figure 1 The mechanism in the invention is to set the base plate 1' in the sofa frame, for example, the external wooden frame, and directly or indirectly connect the rest of the parts, specifically the first connecting rod 6' and / or the third connecting rod 3' and the fourth connecting rod 5' to the sofa seat frame iron frame. Because the above design can limit the motion trajectory of the mechanism, the motion trajectory of the moving connecting rod 6' is a motion trajectory of linear motion.

[0005] However, with the changing needs of modern life, the following problems have been discovered in the process of using the above existing institutions:

[0006] First, the link type suspension mechanism is complicated and cumbersome. In order to define the moving tracks between the first link 2', the second link 4', the third link 3' and the fourth link 5', at least three connecting rods as described in the prior art are required, namely: the first connecting rod 6', the second connecting rod 8' and the third connecting rod 7'.

[0007] Secondly, the design is difficult because three connecting rods need to be added, namely, a first connecting rod 6', a second connecting rod 8' and a third connecting rod 7'. The connection positions of the connecting rods are difficult to determine.

[0008] Third, a larger clearance is required in terms of volume. Also due to the setting of the three connecting rods, the suspension mechanism requires a larger clearance to set up. Usually, the thickness of the suspension mechanism of the existing mechanism is at least 10cm-15cm, which greatly limits the design of the functional sofa.

[0009] Fourth, a higher height is required to set the suspension mechanism, such as Figure 1 As shown in , the maximum clear height of the suspension mechanism in the prior art depends on the first connection 9' and the second connection 10'. In order to reduce the maximum clear height, the second connecting rod 8' is designed as a recessed connection design in the prior art. It can be seen that the importance of reducing the maximum clear height and the design scheme of the prior art also makes efforts to reduce the maximum clear height.

[0010] The above problems limit the effect of the suspension mechanism in the functional sofa, and also limit the further development of the functional sofa. Therefore, the suspension mechanism of the existing sofa has the above inconveniences and problems. Summary of the invention

[0011] The purpose of the present invention is to provide a sofa suspension mechanism and a use method thereof.

[0012] To achieve the above-mentioned purpose, the present invention proposes a sofa suspension mechanism and a method of use, and the following solutions are:

[0013] A sofa suspension mechanism comprises two suspension units on a base plate 1, wherein the two suspension units are respectively connected to the base plate 1, and the two suspension units respectively form a polygonal structure of at least three sides with the base plate, and the two polygonal structures of at least three sides are respectively connected to the base plate to form one side of the polygon of the three sides, and the two suspension units are connected by at least one connecting rod to limit and link the movement trajectories of the two suspension units.

[0014] The suspension mechanism of the sofa of the present invention can also be further implemented by adopting any one or more of the following technical steps.

[0015] The suspension mechanism of the sofa, wherein the suspension unit and the base plate form a quadrilateral mechanism.

[0016] The suspension mechanism of the sofa is configured as follows: the first suspension unit includes a first connecting rod 2, a second connecting rod 3, and a third connecting rod 4; one end of the first connecting rod 2 is rotatably connected to a first connecting point 9 on a base plate 1; the other end of the first connecting rod 2 is rotatably connected to one end of the second connecting rod 3; the middle of the second connecting rod 3 is connected to the top end of the third connecting rod 4; and the other end of the third connecting rod 4 is connected to a second connecting point 10 on the base plate 1.

[0017] In the suspension mechanism of the sofa, the two suspension units are two suspension units whose relative side lengths are proportional.

[0018] The suspension mechanism of the above-mentioned sofa, wherein the two suspension units are the same suspension units, the second suspension unit includes a fourth connecting rod 5, a fifth connecting rod 6, and a sixth connecting rod 7, one end of the fourth connecting rod 5 is rotatably connected to the third connecting point 11 on the base plate 1, the other end of the fourth connecting rod 5 is rotatably connected to one end of the fifth connecting rod 6, the middle part of the fifth connecting rod 6 is rotatably connected to the top end of the sixth connecting rod 7, and the other end of the third connecting rod 7 is rotatably connected to the fourth connecting point 12 on the base plate 1; the other end of the second connecting rod 3 is connected to the fifth connecting rod 6 through the first connecting rod 8, and the distance from the first connecting point to the second connecting point is greater than the distance from the third connecting point to the fourth connecting point.

[0019] The suspension mechanism of the aforementioned sofa, wherein the suspension unit is configured such that, preferably, the ratio of the length from the first connection point 9 to the second connection point 10 to the length from the second connection point 10 to the sixth connection point 15 is in the range of 4.2:1 to 5.3:1, the ratio of the length from the second connection point 10 to the sixth connection point 15 to the length from the sixth connection point 15 to the fifth connection point 14 is 0.8:1 to 1.2:1, and the ratio of the length from the sixth connection point 15 to the fifth connection point 14 to the length from the fifth connection point 14 to the first connection point 9 is 0.18:1 to 0.25:1.

[0020] In the suspension mechanism of the sofa, the motion trajectory of the connecting rod relative to the base plate 1 has at least a partially linear motion trajectory.

[0021] In the suspension mechanism of the sofa, the motion trajectories of the second connecting rod 3 and the fifth connecting rod 6 relative to the base plate 1 have at least a partially linear motion trajectory.

[0022] In the suspension mechanism of the sofa, the motion trajectories of the seventh connection point 16 of the second connecting rod and the eighth connection point 13 of the fifth connecting rod 6 are partially linear motions.

[0023] The purpose of the present invention is also to provide a method for using the suspension mechanism of a sofa.

[0024] To achieve the above purpose, the technical solution of the present invention is:

[0025] The method for using the sofa suspension mechanism according to the present invention is as follows:

[0026] - a selection step for selecting a suspension unit, wherein the suspension unit and the base plate 1 form a polygonal structure of at least three sides, and the motion trajectory of part or all of the connecting rods relative to the base plate 1 has at least a part of a linear motion trajectory,

[0027] - a setting step, setting at least two selected suspension units in parallel on the substrate 1, and connecting the connecting rods with the linear motion track on the at least two selected suspension units respectively through at least one connecting rod.

[0028] The suspension mechanism of the sofa of the present invention is further implemented by using any one or more of the following devices.

[0029] The above-mentioned sofa suspension mechanism is used in a method, wherein the sofa suspension mechanism is connected to the sofa outer frame through a base plate 1, and is directly or indirectly connected to the sofa iron frame through a first connecting rod 8, wherein the iron frame at least includes a seat frame mechanism, a back mechanism and a leg mechanism.

[0030] After adopting the above technical solution, the suspension mechanism of the sofa of the present invention has the following advantages:

[0031] 1. The suspension mechanism has a simple structure, the thickness of the mechanism is thinner, and the design clearance is larger;

[0032] 2. The quality of the sofa is safe and reliable, the number of connecting rods is reduced, and the thickness can be reduced to less than 7CM, which will not affect the setting of soft bags and other mechanisms;

[0033] 3. The design structure of the prior art is improved, the first connection mechanism 9' and the second connection mechanism 10' are cancelled, and the net height is greatly reduced.

[0034] 4. The design of the present application uses two connecting rods, the second connecting rod 3 and the third connecting rod 4, to replace the connecting rod design of the first connecting rod 2' in the prior art. When moving, the second connecting rod 3 and the third connecting rod 4 have a folding effect, which greatly reduces the clearance and height required for the installation of the suspension mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the structure of a known link type suspension mechanism, which is a mechanical extension device of a link type suspension translation system;

[0036] Figure 2 It is a structural schematic diagram of a link type suspension mechanism according to an embodiment of the present invention;

[0037] Figure 3 Schematic diagram of the motion of the linkage suspension mechanism according to an embodiment of the present invention.

[0038] Figure 4 Another motion schematic diagram of the linkage suspension mechanism according to an embodiment of the present invention.

[0039] Figure 5 Another motion schematic diagram of the linkage suspension mechanism according to an embodiment of the present invention.

[0040] Figure 6 It is a suspension unit of the linkage type suspension mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with embodiments and accompanying drawings.

[0042] Figure 1 This has been explained above and will not be repeated here.

[0043] Implementation 1:

[0044] The method for using the sofa suspension proposed in this application includes:

[0045] - Select the step, select the suspension unit, e.g. Figure 4 The suspension unit shown in the figure, and the suspension unit and the substrate 1 form a polygonal structure of at least three sides. When the suspension unit is set on the substrate 1, for example, when the substrate 1 is used as the above-mentioned limiting side, the motion trajectory of the second connecting rod 3 relative to the substrate 1 has at least a part of a straight line motion trajectory or an approximate straight line motion trajectory,

[0046] - Setting step, setting at least two selected suspension units in parallel on the substrate 1, and connecting the connecting rods with linear motion trajectories on the at least two selected suspension units respectively through at least one connecting rod.

[0047] The purpose of this application is to provide a method for using a sofa suspension. As mentioned above, the method requires selecting Figure 6 The suspension unit is required to satisfy that part of the motion trajectory of the connecting rod corresponding to the substrate is a straight line, for example Figure 4 After selecting the suspension unit, at least two selected suspension units are arranged in parallel on the substrate 1, and connected with the connecting rods corresponding to the substrate in the at least two suspension units respectively through the connecting rod, for example Figure 2 The first connecting rod 8 is connected to the at least two selected suspension units so that the at least two selected suspension units can move in tandem and have at least one linear motion trajectory. When the functional sofa moves, the linear motion trajectory moves the seat frame forward, so that the seat back can be tilted back without leaning against the wall.

[0048] In a preferred embodiment, Figure 2-6 As shown in the figure, the selected suspension unit and the substrate form a quadrilateral mechanism. Preferably, the first suspension unit includes a first connecting rod 2, a second connecting rod 3, and a third connecting rod 4, one end of the first connecting rod 2 is rotatably connected to a first connecting point 9 on the substrate 1, the other end of the first connecting rod 2 is rotatably connected to one end of the second connecting rod 3, the middle part of the second connecting rod 3 is connected to the top end of the third connecting rod 4, and the other end of the third connecting rod 4 is connected to a second connecting point 10 on the substrate 1.

[0049] In this embodiment, the two suspension units are of different forms. Specifically, one suspension unit is Figure 6 As shown. The other suspension unit needs to meet the following conditions: Figure 6 When the connecting rod is linked, the connecting rod can move in a straight line. Such a setting protects the diversity of the sofa suspension mechanism to meet the needs of different sofas for suspension mechanisms.

[0050] Example 2

[0051] Of course, in a preferred embodiment, the two suspension units are of the same type and are identical. Specifically, based on Example 1, the second suspension unit includes a fourth connecting rod 5, a fifth connecting rod 6, and a sixth connecting rod 7. One end of the fourth connecting rod 5 is rotatably connected to the third connecting point 11 on the base plate 1, the other end of the fourth connecting rod 5 is rotatably connected to one end of the fifth connecting rod 6, the middle of the fifth connecting rod 6 is rotatably connected to the top of the sixth connecting rod 7, and the other end of the third connecting rod 7 is rotatably connected to the fourth connecting point 12 on the base plate 1; the sofa is an electric sofa, and the other end of the second connecting rod 3 is connected to the fifth connecting rod 6 through the first connecting rod 8. The distance from the first connecting point 9 to the second connecting point 10 is the distance from the third connecting point 11 to the fourth connecting point 12.

[0052] Through the above design, it is determined that the suspension unit is as follows Figure 6 The suspension unit shown in the figure forms a quadrilateral structure with the substrate. The above selected suspension unit is arranged on the substrate 1. Figures 2 to 5 As shown in the figure, when the linkage is connected, its motion trajectory can have a partial straight line trajectory or a similar linear trajectory. Figure 1 In the design of the first link 2 ′ and the second link 4 ′, this embodiment has a second link 3 and a third link 4 that can be folded during movement, as well as a fifth link 6 and a sixth link 7. Figures 2 to 5 The motion mode of the suspension mechanism based on the selected suspension unit is also shown. The applicant has arranged so that the second connecting rod and the third connecting rod can move in the motion as shown in FIG. Figure 3 and Figure 5 The same folding as above can greatly reduce the net height required for setting up the suspension mechanism. Figure 2 and Figure 6 As shown, different from the prior art, the connecting rods in the prior art, especially the second connecting rod and the third connecting rod 7', are arranged and must be arranged at the top ends of the first connecting rod 2' and the second connecting rod 4' extending in the opposite direction. And due to the first connecting rod 2' and the second connecting rod 4' extending in the opposite direction, the installation height required by the prior art is greatly increased.

[0053] In the prior art, only one connecting rod is needed. Figure 2 The first connecting rod 8 is arranged at the positive extension of the second connecting rod 3 and the fifth connecting rod 6. Therefore, the first connecting rod 8 does not occupy the net height of the suspension mechanism, that is, there is no specific requirement for the net height of the suspension mechanism as in the prior art. Therefore, the Figure 1 The requirements for clear height in the prior art.

[0054] Embodiment 3:

[0055] Preferably, embodiment 2 does not exclude another sofa suspension mechanism, that is, two suspension units with side lengths in proportion to each other. Such two proportional suspension mechanisms are connected by a connecting rod, which can also satisfy the requirement that the connecting rod moves in a straight line.

[0056] Embodiment 4:

[0057] In another preferred implementation example, the suspension mechanism is designed according to the above embodiment. At the same time, the suspension unit is set to preferably have a ratio of the length from the first connection point 9 to the second connection point 10 to the length from the second connection point 10 to the sixth connection point 15 in the range of 4.2:1 to 5.3:1, a ratio of the length from the second connection point 10 to the sixth connection point 15 to the length from the sixth connection point 15 to the fifth connection point 14 in the range of 0.8:1 to 1.2:1, and a ratio of the length from the sixth connection point 15 to the fifth connection point 14 to the length from the fifth connection point 14 to the first connection point 9 in the range of 0.18:1 to 0.25:1. The design in the above ratios makes the suspension mechanism more usable, and the attached Figure 2-5 The design in the folding mechanism is within this ratio. The required clearance is reduced due to the folding mechanism, and the thickness of the entire suspension mechanism is reduced due to the reduction of 2 connecting rods, so the new suspension mechanism reduces the clearance requirement.

[0058] Example 5

[0059] As described in Example 1, the sofa suspension mechanism is used in a sofa, especially in a functional sofa. The suspension mechanism can cooperate with the sofa seat frame, sofa backrest device, sofa leg device, and sofa outer frame device of the sofa.

[0060] Example 6

[0061] In a preferred embodiment, the design steps of the present invention are as follows:

[0062] - A limiting step, limiting a quadrilateral mechanism, wherein the quadrilateral mechanism is composed of a substrate 1 on one side, wherein the length of the quadrilateral mechanism on the substrate 1 is first limited, that is, the length of one side of the quadrilateral is first limited, and the starting angle between the first connecting rod 2 and the substrate is limited, an eighth connecting point 13 on the third connecting rod is limited, and the length of the straight line trajectory required for the eighth connecting point 13 is confirmed, wherein the straight line trajectory depends on the condition setting that the back mechanism needs to tilt backward.

[0063] - Simulation steps, obtain the proportions of the quadrilateral and the corresponding lengths through software or object simulation,

[0064] - A setting step, wherein at least two determined suspension units are set in parallel on the substrate 1, and the connecting rods having a linear motion trajectory are respectively connected to the at least two selected suspension units through at least one connecting rod.

[0065] In Example 4, the design concept of the suspension mechanism of the sofa of the present invention is restored.

[0066] The present invention has substantial characteristics and significant technical progress. The sofa suspension mechanism and its application are improvements on the prior art, which can make the sofa suspension mechanism Figures 2 to 5 The structure shown has the function of making the sofa seat frame connected to the suspension mechanism move horizontally, and reduces the thickness of the suspension mechanism from at least 10cm-15cm to less than 7cm; the thickness of the mechanism becomes thinner, and the design clearance becomes larger; the first connection mechanism 9' and the second connection mechanism 10' are cancelled, reducing the engineering cost. Moreover, the suspension mechanism can move the functional sofa frame forward linearly, so that when the back mechanism is tilted, the space after tilting will not be increased, so that the functional sofa can be placed closer to the wall, increasing the randomness of the sofa arrangement in the room.

[0067] According to the suspension mechanism of the present invention, the thickness of the suspension mechanism is reduced from 10-15cm to 7cm or less as described above. This arrangement can solve the bottleneck problem in the design of functional sofas. Its advantages are listed below:

[0068] 1. During the installation process of the functional sofa, since the thickness of the suspension mechanism is reduced from at least 10cm-15cm to less than 7cm, the space required for installation becomes smaller. Therefore, the outer bag set at the location of the suspension mechanism and the sofa armrest do not need to be as wide as in the existing technology, and are easier to install.

[0069] 2. In another possible installation situation, the suspension mechanism may be installed inside the seat frame instead of outside the seat frame as in the prior art. This advantage is that the net height of the suspension mechanism becomes lower and controllable. This makes the functional sofa unnecessary to have armrests, thus becoming lighter.

[0070] 3. Compared with the prior art, the design and connection method of the present application significantly reduces the number of connecting rods and is more intuitive in setting, making the suspension of the present application simpler and more controllable.

[0071] 4. The reduction in the number of connecting rods also reduces engineering costs, while improving production efficiency and yield rate, making the maintenance of the sofa iron frame easier.

[0072] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A sofa suspension mechanism, characterized in that: The substrate (1) comprises two suspension units, the two suspension units are respectively connected to the substrate (1), and the two suspension units and the substrate respectively form a quadrilateral structure, the two quadrilateral structures are respectively connected to the substrate, and one side of the quadrilateral structure is connected by at least one connecting rod, which is used to connect the two suspension units to limit and link the movement tracks of the two suspension units; the two suspension units and the substrate respectively form a quadrilateral mechanism; the two suspension units are respectively a first suspension unit and a second suspension unit, the first suspension unit comprises a first connecting rod (2), a second connecting rod (3), and a third connecting rod (4); the second suspension unit comprises a fourth connecting rod (5), a fifth connecting rod (6), and a sixth connecting rod (7); One end of the first connecting rod (2) is rotatably connected to a first connecting point (9) on the base plate (1), the other end of the first connecting rod (2) is rotatably connected to one end of the second connecting rod (3), the middle part of the second connecting rod (3) is connected to the top end of the third connecting rod (4), and the other end of the third connecting rod (4) is connected to a second connecting point (10) on the base plate (1); The two suspension units are identical, one end of the fourth connecting rod (5) is rotatably connected to the third connecting point (11) on the base plate (1), the other end of the fourth connecting rod (5) is rotatably connected to one end of the fifth connecting rod (6), the middle part of the fifth connecting rod (6) is rotatably connected to the top end of the sixth connecting rod (7), and the other end of the sixth connecting rod (7) is rotatably connected to the fourth connecting point (12) on the base plate (1); the other end of the second connecting rod (3) is connected to the fifth connecting rod (6) via the first connecting rod (8), and the distance from the first connecting point to the second connecting point is equal to the distance from the third connecting point to the fourth connecting point.

2. The sofa suspension mechanism according to claim 1, characterized in that: The two suspension units are two suspension units whose relative side lengths are proportional.

3. The sofa suspension mechanism according to claim 1, characterized in that: The ratio of the length from the first connection point (9) to the second connection point (10) to the length from the second connection point (10) to the sixth connection point (15) is in the range of 4.2:1 to 5.3:1, the ratio of the length from the second connection point (10) to the sixth connection point (15) to the length from the sixth connection point (15) to the fifth connection point (14) is in the range of 0.8:1 to 1.2:1, and the ratio of the length from the sixth connection point (15) to the fifth connection point (14) to the length from the fifth connection point (14) to the first connection point (9) is in the range of 0.18:1 to 0.25:1; wherein the fifth connection point (14) is the hinge point between the first connecting rod (2) and the second connecting rod (3), and the sixth connection point (15) is the hinge point between the second connecting rod (3) and the third connecting rod (4).

4. The sofa suspension mechanism according to claim 3, characterized in that: The motion trajectory of the connecting rod relative to the substrate (1) has at least a portion of a linear motion trajectory; the motion trajectories of the connecting rods relative to the substrate (1) are the second connecting rod (3) and the fifth connecting rod, which have at least a portion of a linear motion trajectory.

5. The sofa suspension mechanism according to claim 4, characterized in that: Part of the motion trajectory of the eighth connection point (13) of the second connecting rod (3) and the seventh connection point (16) of the fifth connecting rod (6) is linear motion.

6. A method for using a sofa suspension mechanism, characterized in that: The suspension mechanism of the sofa according to any one of claims 1 to 5 is connected to the sofa outer frame via a base plate (1), and is directly or indirectly connected to the sofa iron frame via a first connecting rod (8), wherein the iron frame at least includes a seat frame mechanism, a back mechanism and a leg mechanism.

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