CN115778130A - Sofa forming method for reducing wall-against distance - Google Patents
Sofa forming method for reducing wall-against distance Download PDFInfo
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- CN115778130A CN115778130A CN202210998312.0A CN202210998312A CN115778130A CN 115778130 A CN115778130 A CN 115778130A CN 202210998312 A CN202210998312 A CN 202210998312A CN 115778130 A CN115778130 A CN 115778130A
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Abstract
The invention discloses a sofa forming method for reducing the space between adjacent walls, wherein a back connecting rod with a rotary connecting part and an installation part is prefabricated, an obtuse included angle is formed between the rotary connecting part and the installation part, the installation part is tilted upwards in an initial state of the back connecting rod, the installation part is tilted backwards in a backward tilting state, and the included angle between the installation part and a horizontal plane in the initial state is larger than that in the backward tilting state; a fixed first connecting point is arranged for the driving rod, the driving rod rotates around the first connecting point, a fixed second connecting point is arranged for the driven rod, the driven rod rotates around the second connecting point, and the two connecting points are arranged at intervals in the front and back; the rotary connecting part is rotatably connected with the driving rod at a third connecting point, and the rotary connecting part is rotatably connected with the driven rod at a fourth connecting point; the driving rod is driven to rotate forwards to drive the back connecting rod to move forwards, the driven rod rotates forwards along with the driving rod and the driven rod, meanwhile, the front end of the rotating connecting part is lifted up and the rear end of the rotating connecting part is lowered down by the driving rod and the driven rod, the back connecting rod is switched to a lying posture, and the included angle between the mounting part and the horizontal plane is reduced.
Description
Technical Field
The invention relates to the field of furniture, in particular to a sofa forming method for reducing the distance between two adjacent walls.
Background
With the increasing demand of people on living quality, the factors considered by consumers when selecting furniture are not limited to single function, but the utilization rate of the desired furniture can be maximized, so that the furniture is required to have more functions and be suitable for more scenes or situations to meet more real living demands, such as most common sofas or chairs, and sofa chairs for leisure use are developed with more functions and application scenes, developed towards more comfortable, more convenient and more intelligent directions, and provided with functions in various modes, such as being suitable for reading, working and lying rest; however, there are still many disadvantages to the multi-mode use of such sofas, for example, when they are placed against a wall and the mode is switched, the back-rest will move backwards and push against the wall, causing the switch to be terminated and even the mechanism to be damaged, and therefore must be far enough away from the wall; meanwhile, another problem is caused, the movement of the backrest is usually simple rotation, when the sofa switches the mode, the backrest and the seat part are obviously cheap, the back of the human body can feel away from the hip when rotating along with the backrest, and the phenomenon is shown that the clothes of the user can be dragged upwards, the back can feel back rubbing, and the use comfort is poor.
Therefore, a method for moving the backrest of the sofa forward while reclining is needed to solve the above problems.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a sofa forming method for reducing a distance between adjacent walls, wherein a back link has a common structure, and when a rod is preset, a driving rod and a driven rod are respectively rotatably provided, and the driving rod and the driven rod are both rotatably connected to the back link.
The technical scheme of the invention is realized as follows:
a sofa forming method for reducing the space between two adjacent walls comprises the following steps:
prefabricating a back connecting rod: prefabricating a back connecting rod with a rotary connecting part and an installation part, wherein the rotary connecting part is used for connecting the driving rod and the driven rod, the installation part is used for installing a seat backrest, an obtuse included angle is formed between the rotary connecting part and the installation part, and the back connecting rod comprises an initial state and a backward leaning state; the mounting part tilts upwards in an initial state, the mounting part tilts backwards in a backward tilting state, and the included angle between the mounting part and the horizontal plane in the initial state is larger than that between the mounting part and the horizontal plane in the backward tilting state;
presetting a rod piece position: a fixed first connecting point is arranged for the driving rod, the driving rod rotates around the first connecting point, a fixed second connecting point is arranged for the driven rod, the driven rod rotates around the second connecting point, and the first connecting point and the second connecting point are arranged at intervals in the front and back;
installing a back connecting rod: the rotating connecting part of the back connecting rod is rotatably connected to the driving rod and the driven rod, the rotating connecting part is rotatably connected with the driving rod at a third connecting point, and the rotating connecting part is rotatably connected with the driven rod at a fourth connecting point;
the initial state is switched to a backward state: the driving rod is driven to rotate forwards, the driving rod drives the back connecting rod to move forwards, the driven rod also rotates forwards, the driving rod and the driven rod enable the front end of the rotating connecting part to ascend and the rear end of the rotating connecting part to descend while the back connecting rod moves forwards, the whole back connecting rod is switched to a lying posture, and the included angle between the mounting part and the horizontal plane is reduced.
The prefabricated back connecting rod is of a common structure, namely the method has strong applicability and has no more specific requirements on the structure of the back connecting rod; when the positions of the rod pieces are preset, the rotatable driving rod and the rotatable driven rod are required to be arranged and are rotatably connected with the back connecting rod, and the two rod pieces jointly determine the posture and the position of the back connecting rod, so that after the parameters of the driving rod and the driven rod are determined, the posture and the position of the back connecting rod are predictable, and a foundation is laid for the back connecting rod to perform preset movement; when the back connecting rod is in a switching state, the back connecting rod does not rotate around a single point any more, the third connecting point and the fourth connecting point drive the back connecting rod to rotate together, the rotation is more similar to torsion, and meanwhile, the driving rod and the driven rod rotate forwards to drive the back connecting rod to move forwards so as to solve the problems of back rubbing and backward extension.
Preferably, the first connecting point is located at the lower end of the driving rod, the second connecting point is located at the lower end of the driven rod, the third connecting point is located at the upper end of the driving rod, and the fourth connecting point is located at the upper end of the driven rod; the distance between the first connecting point and the second connecting point is larger than the distance between the third connecting point and the fourth connecting point, and the driving rod and the driven rod are in a state that the upper ends of the driving rod and the driven rod are close. The postures of the driving rod and the driven rod and the position of the back connecting rod are mutually related and influenced, so that a set of four-bar linkage mechanism is formed to determine the motion condition of the back connecting rod.
Preferably, in the initial state, the driving link is inclined forward and the driven link is inclined backward; in the backward leaning state, the driven rod is switched from backward leaning to forward leaning, the driving rod is still forward leaning, and the leaning angle is larger than the initial state. The inclined directions of the driving rod and the driven rod can indicate which part of the rotation profile of the rod piece is positioned, namely the lifting condition in the height direction can be determined when the rod piece moves forwards, so that one end of the back connecting rod is pressed down, the other end of the back connecting rod is lifted, and the back connecting rod tilts backwards.
Preferably, the length of the driving rod is greater than the length of the driven rod. The length of the rod piece has certain influence on the lifting speed, and the phenomenon that the back end of the back connecting rod descends too slowly to be tilted backwards is prevented.
Preferably, the third connecting point rotates around the first connecting point and has a circular first rotating profile, the fourth connecting point rotates around the second connecting point and has a circular second rotating profile, and the diameter of the first rotating profile is larger than that of the second rotating profile; the back connecting rod is always connected with the first rotating profile and the second rotating profile, the third connecting point is higher than the fourth connecting point in the initial state, and when the back connecting rod is switched to the backward tilting state, the third connecting point moves forwards and the height of the third connecting point is reduced, and the fourth connecting point moves forwards and the height of the fourth connecting point is increased. The third connecting point and the fourth connecting point can be regarded as two ends of the rotating connecting part, so that the path of the rotating connecting part is determined, and the back connecting rod can be in a lying posture by the design.
Preferably, the second connection point is higher than and in front of the first connection point. The distance difference of the third and fourth connecting points is compensated, the distance can be reduced, the distance between the third and fourth connecting points can reach a preset value, a preset four-bar mechanism is obtained, and the back connecting rod can also perform preset movement, move forwards and lean backwards.
The design starting point, concept and beneficial effect of the invention adopting the technical scheme are as follows:
the prefabricated back connecting rod is of a common structure, namely the method has strong applicability and has no more specific requirements on the structure of the back connecting rod; when the positions of the rod pieces are preset, the rotatable driving rod and the rotatable driven rod are required to be arranged and are rotatably connected with the back connecting rod, and the two rod pieces jointly determine the posture and the position of the back connecting rod, so that after the parameters of the driving rod and the driven rod are determined, the posture and the position of the back connecting rod are predictable, and a foundation is laid for the back connecting rod to perform preset movement; when the back connecting rod is in a switching state, the back connecting rod does not rotate around a single point any more, the third connecting point and the fourth connecting point drive the back connecting rod to rotate together, the rotation is more similar to torsion, and meanwhile, the driving rod and the driven rod rotate forwards to drive the back connecting rod to move forwards so as to solve the problems of back rubbing and backward extension.
Drawings
Fig. 1 is a schematic perspective view of a mechanical extension unit in a sitting position according to an embodiment of the present invention;
FIG. 2 is a schematic view of a four bar linkage mechanism formed by the base, the first back link, the second back link and the back link according to an embodiment of the present invention;
fig. 3 is a perspective view of the mechanical stretching unit in a lying state according to the embodiment of the present invention;
FIG. 4 is a schematic perspective view of an embodiment of the present invention illustrating a mechanical stretching apparatus in a sitting position;
FIG. 5 is a schematic perspective view of a mechanical stretching apparatus in a lying state according to an embodiment of the present invention;
FIG. 6 is a flow chart illustrating the method according to the embodiment of the present invention.
The figures are numbered: a base 1; a support rail 101; a vertical rod 102; a first backrest link 2; a second backrest link 3; a backrest connection 4; the rotation connecting portion 41; a mounting portion 42; a leg rest attachment 5; a driven link 6; a first extension plate 7; a second extension plate 8; a leg rest push-pull rod 10; a first leg rest link 11; a second leg rest link 12; a third leg rest link 13; a fourth leg rest link 14; a fifth footrest link 15; a sixth leg rest link 16; a mounting tube 17; a first connection point 18; a second connection point 19; a third connection point 20; a fourth connection point 21.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" means one or more than one unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific embodiment of the invention is as follows:
as shown in FIG. 6, the invention provides a sofa molding method for reducing the space between adjacent walls, comprising the following steps:
prefabricating a back connecting rod: prefabricating a back connecting rod with a rotary connecting part and an installation part, wherein the rotary connecting part is used for connecting the driving rod and the driven rod, the installation part is used for installing a seat backrest, an obtuse included angle is formed between the rotary connecting part and the installation part, and the back connecting rod comprises an initial state and a backward leaning state; the mounting part tilts upwards in an initial state, the mounting part tilts backwards in a backward tilting state, and the included angle between the mounting part and the horizontal plane in the initial state is larger than that between the mounting part and the horizontal plane in the backward tilting state;
presetting a rod piece position: a fixed first connecting point 18 is arranged for the driving rod, the driving rod is enabled to rotate around the first connecting point 18, a fixed second connecting point 19 is arranged for the driven rod, the driven rod is enabled to rotate around the second connecting point 19, and the first connecting point 19 and the second connecting point 19 are arranged at intervals in the front-back direction;
installing a back connecting rod: the rotary connecting part of the back connecting rod is rotatably connected to the driving rod and the driven rod, the rotary connecting part is rotatably connected with the driving rod at a third connecting point 20, and the rotary connecting part is rotatably connected with the driven rod at a fourth connecting point 21;
the initial state is switched to a backward state: the driving rod is driven to rotate forwards, the driving rod drives the back connecting rod to move forwards, the driven rod also rotates forwards, the driving rod and the driven rod enable the front end of the rotating connecting part to ascend and the rear end of the rotating connecting part to descend while the back connecting rod moves forwards, the whole back connecting rod is switched to a lying posture, and the included angle between the mounting part and the horizontal plane is reduced.
Further, as shown in fig. 2, a first connection point 18 is located at the lower end portion of the driving link, a second connection point 19 is located at the lower end portion of the driven link, a third connection point 20 is located at the upper end portion of the driving link, and a fourth connection point 21 is located at the upper end portion of the driven link; the distance between the first connecting point 18 and the second connecting point 19 is larger than the distance between the third connecting point 20 and the fourth connecting point 21, and the driving rod and the driven rod are in a state that the upper ends of the driving rod and the driven rod are close; in an initial state, the driving rod inclines forwards, and the driven rod inclines backwards; in the backward leaning state, the driven rod is switched from backward leaning to forward leaning, the driving rod is still forward leaning, and the leaning angle is larger than the initial state.
The length of the driving rod is greater than that of the driven rod, and the second connecting point 19 is higher than the first connecting point 18 and is positioned in front of the first connecting point 18; the third connection point 20 rotates around the first connection point 18 and has a first circular rotation profile, the fourth connection point 21 rotates around the second connection point 19 and has a second circular rotation profile, the diameter of the first rotation profile is larger than that of the second rotation profile; the back link is always connected with the first rotating profile and the second rotating profile, the third connecting point 20 is higher than the fourth connecting point 21 in the initial state, and when the back link is switched to the backward leaning state, the third connecting point 20 moves forwards and the height of the back link is reduced, and the fourth connecting point 21 moves forwards and the height of the back link is increased.
As shown in fig. 1 and 2, there is provided a mechanical extension unit in the above-described manner, comprising a base 1, a first backrest link 2, a second backrest link 3, and a backrest connection 4; the base 1 is configured as a main body support of the mechanical stretching unit, the first backrest connecting rod 2 is positioned at the rear end part of the base 1 and is rotationally connected with the base 1, the second backrest connecting rod 3 is positioned at the rear part of the base 1 and is rotationally connected with the base 1, and the rotational connection point of the second backrest connecting rod 3 and the base 1 is positioned in front of the rotational connection point of the first backrest connecting rod 2 and the base 1; the backrest connector 4 is configured to connect a sofa backrest to support a human back; the backrest connecting piece 4 is hinged with the upper end of the first backrest connecting rod 2 and the upper end of the second backrest connecting rod 3, and the rotating connecting point of the second backrest connecting rod 3 and the backrest connecting piece 4 is positioned in front of the rotating connecting point of the first backrest connecting rod 2 and the backrest connecting piece 4; the base 1, the first back link 2, the second back link 3, and the back link 4 together constitute a four-link mechanism configured to move the whole forward while rotating the upper end of the back link 4 downward.
The back connecting rod is a back connecting piece 4, the driving rod is a part of the first back connecting rod 2, and the driven piece is the second back connecting rod 3.
The four-bar mechanism jointly composed of the base 1, the first backrest connecting rod 2, the second backrest connecting rod 3 and the backrest connecting piece 4 changes the backrest connecting piece 4 from single-point rotating motion into combined motion of rotating and moving, namely when the sofa is switched to a lying state, the backrest connecting piece 4 drives the backrest to lean backwards and move forwards simultaneously, so that the back rubbing feeling is reduced, the defect that the length of the sofa is extended when the backrest is leaned backwards is avoided, and the sofa does not need to be far away from a wall surface when being placed.
Specifically, as shown in fig. 1 and 3, the mechanical extension unit further includes a footrest link 5, a footrest link assembly, and a driven link 6; the foot rest connecting piece 5 is configured to be connected with a sofa foot rest piece, and the foot rest connecting piece 5 is arranged on the foot rest connecting rod assembly; the base 1 is a general L-shaped rod piece, and comprises a supporting cross rod 101 arranged along the front-back direction and a vertical rod 102 positioned at the rear end of the supporting cross rod 101 and extending downwards, the supporting cross rod 101 is used for connecting with a sofa seat part and keeps fixed, the foot rest connecting rod assembly is telescopically arranged at the front end part of the supporting cross rod 101, and the foot rest connecting rod assembly is configured to drive the foot rest connecting piece 5 to be unfolded when being extended and drive the foot rest connecting piece 5 to be folded when being retracted; driven connecting rod 6 is a straight rod, its front and back both ends respectively with bracket link assembly and first back connecting rod 2 is connected, and driven connecting rod 6 configures to and makes first back connecting rod 2 and bracket link assembly linkage.
A first extension plate 7 is fixedly arranged on the supporting cross rod 101 positioned on the front side of the vertical rod 102, the first extension plate 7 faces downwards and protrudes downwards out of the supporting cross rod 101, the first backrest connecting rod 2 is approximately L-shaped, the second backrest connecting rod 3 is a straight rod, the backrest connecting piece 4 comprises a rotating connecting part 41 for connecting the first backrest connecting rod 2 and the second backrest connecting rod 3 and an installation part 42 for installing a sofa backrest, and an obtuse included angle is formed between the rotating connecting part 41 and the installation part 42; the upper end part of the first backrest connecting rod 2 is rotationally connected with the backrest connecting piece 4, the lower end part of the first backrest connecting rod 2 is rotationally connected with the rear end part of the driven connecting rod 6, and a corner between the upper end part and the lower end part of the first backrest connecting rod 2 is rotationally connected with the lower end part of a first extension plate 7 of the base 1; the connection point of the first back link 2 and the back link 4 is close to the rear end of the rotation connection portion 41, and the connection point of the upper end of the second back link 3 and the back link 4 is close to the front end of the rotation connection portion 41; when the driven link 6 moves backward, the back link 4 is reclined backward and moved forward while the leg rest link 5 is gradually unfolded.
In the four-bar linkage mechanism formed by the base 1, the first backrest connecting rod 2, the second backrest connecting rod 3 and the backrest connecting piece 4, the base 1 is used as a fixed frame, the first backrest connecting rod 2 is used as a driving connecting rod, the second backrest connecting rod 3 is used as a driven connecting rod, and the backrest connecting piece 4 is a connecting rod, so the first backrest connecting rod 2 and the second backrest connecting rod 3 can only rotate relative to the base 1, and because the lengths of the first backrest connecting rod 2 and the second backrest connecting rod 3 are different, the backrest connecting piece 4 can rotate relative to the base 1 and can move relative to the base 1, thereby the effect is achieved.
Further, as shown in fig. 3, the footrest link assembly includes a footrest push-pull rod 10, a first footrest link 11, a second footrest link 12, a third footrest link 13, a fourth footrest link 14, a fifth footrest link 15 and a sixth footrest link 16, a second extension plate 8 is disposed at the front end of the support cross rod 101, the second extension plate 8 is also protruded downward from the support cross rod 101, a corner is disposed between the front and rear ends of the footrest push-pull rod 10, the footrest push-pull rod 10 is rotatably connected at the corner to the lower end of the second extension plate 8 on the base 1, the rear end of the footrest push-pull rod 10 is rotatably connected to the front end of the driven link 6, the front end of the footrest push-pull rod 10 is rotatably connected to one end of the first footrest link 11, and the other end of the first footrest link 11 is rotatably connected to one end of the third footrest link 13; one end of a second footrest connecting rod 12 is rotatably connected to the front end of the base 1, and the rotating connection point of the second footrest connecting rod 12 and the base 1 is positioned in front of the second extension plate 8; the other end of the second footrest connecting rod 12 is rotationally connected with a fourth footrest connecting rod 14, the first footrest connecting rod 11 is rotationally connected with the second footrest connecting rod 12 at the middle parts of the two, and the third footrest connecting rod 13 is rotationally connected with the fourth footrest connecting rod 14 at the middle parts of the two; the other end of the third footrest connecting rod 13 is rotationally connected with one end of a fifth footrest connecting rod 15, the other end of the fourth footrest connecting rod 14 is rotationally connected with one end of a sixth footrest connecting rod 16, the other end of the fifth footrest connecting rod 15 is rotationally connected with the middle part of the sixth footrest connecting rod 16, and the sixth footrest connecting rod 16 is connected with the footrest connecting piece 5; the bracket connecting rod assembly realizes the telescopic function through the connection mode.
As shown in fig. 4 and 5, there is further provided a mechanical stretching device, which includes an actuator (not shown) and two sets of the above mechanical stretching units, the two sets of the mechanical stretching units are arranged at intervals left and right, two mounting pipes 17 are arranged between the two sets of the mechanical stretching units, the two mounting pipes 17 are arranged along the left and right direction and are arranged at intervals in tandem, two ends of the actuator are respectively hinged on the two mounting pipes 17, when the actuator is started and extended, the actuator drives one of the mounting pipes 17 to move, and the mounting pipe 17 drives the mechanical stretching unit to move; the mounting tube 17 can be mounted between the driven links 6, between the first backrest links 2 or between the leg rest push-pull rods 10.
Claims (6)
1. A sofa forming method for reducing the space between two adjacent walls is characterized by comprising the following steps:
prefabricating a back connecting rod: prefabricating a back connecting rod with a rotary connecting part and an installation part, wherein the rotary connecting part is used for connecting the driving rod and the driven rod, the installation part is used for installing a seat backrest, an obtuse included angle is formed between the rotary connecting part and the installation part, and the back connecting rod comprises an initial state and a backward leaning state; the installation part tilts upwards in an initial state, the installation part tilts backwards in a backward tilting state, and the included angle between the installation part and the horizontal plane in the initial state is larger than that between the installation part and the horizontal plane in the backward tilting state;
presetting a rod piece position: a first fixed connecting point is arranged for the driving rod, the driving rod is enabled to rotate around the first connecting point, a second fixed connecting point is arranged for the driven rod, the driven rod is enabled to rotate around the second connecting point, and the first connecting point and the second connecting point are arranged at intervals in the front-back direction;
installing a back connecting rod: the rotating connecting part of the back connecting rod is rotatably connected to the driving rod and the driven rod, the rotating connecting part is rotatably connected with the driving rod at a third connecting point, and the rotating connecting part is rotatably connected with the driven rod at a fourth connecting point;
the initial state is switched to a backward state: the driving rod is driven to rotate forwards, the driving rod drives the back connecting rod to move forwards, the driven rod also rotates forwards, the driving rod and the driven rod enable the front end of the rotating connecting part to ascend and the rear end of the rotating connecting part to descend while the back connecting rod moves forwards, the whole back connecting rod is switched to a lying posture, and the included angle between the mounting part and the horizontal plane is reduced.
2. The method of claim 1, wherein the method further comprises the steps of: the first connecting point is positioned at the lower end part of the driving rod, the second connecting point is positioned at the lower end part of the driven rod, the third connecting point is positioned at the upper end part of the driving rod, and the fourth connecting point is positioned at the upper end part of the driven rod; the distance between the first connecting point and the second connecting point is larger than the distance between the third connecting point and the fourth connecting point, and the driving rod and the driven rod are in a state that the upper ends of the driving rod and the driven rod are close.
3. The method of claim 2, wherein the step of forming the sofa with reduced wall-to-wall spacing comprises: in an initial state, the driving rod inclines forwards, and the driven rod inclines backwards; in the backward leaning state, the driven rod is switched from backward leaning to forward leaning, the driving rod is still forward leaning, and the leaning angle is larger than the initial state.
4. The method of claim 1 wherein the sofa is formed with a reduced wall clearance, the method comprising: the length of the driving rod is greater than that of the driven rod.
5. The method of claim 4, wherein the step of forming the sofa with reduced wall-to-wall spacing comprises: the third connecting point rotates around the first connecting point and is provided with a circular first rotating profile, the fourth connecting point rotates around the second connecting point and is provided with a circular second rotating profile, and the diameter of the first rotating profile is larger than that of the second rotating profile; the back connecting rod is always connected with the first rotating profile and the second rotating profile, the third connecting point is higher than the fourth connecting point in the initial state, and when the back connecting rod is switched to the backward tilting state, the third connecting point moves forwards and the height of the third connecting point is reduced, and the fourth connecting point moves forwards and the height of the fourth connecting point is increased.
6. The method of claim 4, wherein the step of forming the sofa with reduced wall to wall spacing comprises the steps of: the second connecting point is higher than the first connecting point and is positioned in front of the first connecting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210998312.0A CN115778130A (en) | 2022-08-19 | 2022-08-19 | Sofa forming method for reducing wall-against distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210998312.0A CN115778130A (en) | 2022-08-19 | 2022-08-19 | Sofa forming method for reducing wall-against distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115778130A true CN115778130A (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210998312.0A Pending CN115778130A (en) | 2022-08-19 | 2022-08-19 | Sofa forming method for reducing wall-against distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115778130A (en) |
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2022
- 2022-08-19 CN CN202210998312.0A patent/CN115778130A/en active Pending
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