Cushion linkage mechanism and foldable sofa bed
By designing a cushion linkage mechanism including linkage, slider and connecting rod, the problem of offset and interference in the expansion and closing process of the cushion in the folded sofa bed is solved, and the flexible movement of the cushion and the aesthetics of the design are improved.
Patent Information
- Application Number
- CN202422077664.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-27
AI Technical Summary
During the expansion and closing movement of the existing one-fold sofa bed, the cushion is easily offset or interferes with the foot board, resulting in the complex design and aesthetics being affected.
A cushion linkage mechanism is designed, including two linkage members, two slide groove members and connecting rods. Through the connection between the linkage members and the pivot contact, the coordination between the slide groove members and the sliding rod, and the connection between the connecting rod and the seat cushion, the flexible movement of the cushion during the expansion and closing of the sofa bed is realized.
It effectively avoids interference between the cushion and the footboard, ensuring that the cushion can be moved in place when the sofa bed is fully opened or fully closed, simplifying the design and improving aesthetics.
Smart Images
Figure CN222968210U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a piece of furniture, in particular to a cushion linkage mechanism and a folding sofa bed. Background Art
[0002] The bed is one of the essential household items in people's home life. However, the bed usually occupies a large area and often occupies a considerable living space. In order to improve the reasonable use of the area, people have improved the use of the bed to obtain a larger activity space. Therefore, the sofa bed industry was born.
[0003] See also Figure 1 and Figure 2 , Figure 1 This is the unfolded stereogram of the current folding sofa bed and Figure 2 yes Figure 1 As shown in the figure, in order to ensure that the position of the seat cushion S1 does not shift during the unfolding and folding movement of the folding sofa bed S, the seat cushion S1 is usually directly fixed on the bed frame S2. As a result, the folding sofa bed S cannot avoid the interference between the seat cushion S1 and various linkage mechanisms during the unfolding and folding movement. Figure 1 As shown in the figure, there is interference between the seat cushion S1 and the foot plate S3, so a groove S4 must be made on the side where the seat cushion S1 and the foot plate S3 are adjacent to each other to reduce the squeezing of the foot plate S3 on the seat cushion S1. This not only makes the design of the seat cushion S1 more difficult, but also affects the appearance of the seat cushion S1. Utility Model Content
[0004] The embodiment of the present application provides a seat cushion linkage mechanism and a folding sofa bed, which solves the problem that the current folding sofa bed needs to have grooves in the seat cushion to avoid footboards.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] In a first aspect, a seat cushion linkage mechanism is provided, which is applied to the linkage between the seat cushion and the footboard of a single-fold sofa bed. It includes two linkage members, two chute members and a connecting rod. The two linkage members are symmetrically arranged on both sides in the width direction of the single-fold sofa bed. Each linkage member includes a first linkage rod and a second linkage rod. One end of the first linkage rod is connected to one end of the second linkage rod. The connection end of the first linkage rod and the second linkage rod has a pivot point, and the pivot point is pivotally connected to the bed frame on the side of the single-fold sofa bed close to the footboard. The two chute members are symmetrically arranged on the footboards on both sides of the single-fold sofa bed. Each chute member has a chute and a sliding rod, and the sliding rod passes through the chute and is connected to the other end of the first linkage rod. Both ends of the connecting rod are connected to the other ends of the second linkage rods of the two linkage members. The connecting rod is connected to the seat cushion. When the single-fold sofa bed is in the unfolded state, the other end of the first linkage rod is located on the side close to the bed frame in the chute, and the seat cushion is located in the arc-shaped groove of the footboard. During the folding process of the single-fold sofa bed, the footboard drives the other end of the first linkage rod to slide away from the bed frame in the chute, and the first linkage rod and the second linkage rod rotate around the pivot point. The connecting rod drives the seat cushion to move away from the bed frame and the arc-shaped groove of the footboard and slide out of the arc-shaped groove of the footboard.
[0007] In one embodiment, the first linkage rod and the second linkage rod are of an integral structure.
[0008] In one embodiment, the pivot point is a circular hole, and the first linkage rod and the second linkage rod are pivotally connected to the bed frame by a pivot rod passing through the circular hole.
[0009] In one embodiment, the chute member further has a chute plate, the chute plate is fixed at the lower notch position of the arc-shaped groove of the footboard, the chute is located on the chute plate, and the extending direction of the chute faces the bed frame.
[0010] In one embodiment, the chute is a rectangular through hole.
[0011] In one embodiment, it further includes: a decorative plate, the decorative plate corresponds to the shape of the footboard, and the decorative plate is attached to the outer side of the footboard.
[0012] In a second aspect, a single-fold sofa bed is provided, which includes: the seat cushion linkage mechanism as in the first aspect and a sofa main body. The sofa main body has a bed frame, a seat cushion, a footboard and a backrest. The bed frame is arranged on the sofa main body, and the bed frame can be stored and unfolded in the sofa main body. The seat cushion linkage mechanism connects the bed frame and the footboard. The seat cushion is connected to the connecting rod of the seat cushion linkage mechanism. The backrest is arranged on the footboard.
[0013] In one embodiment, it further includes: a gusset plate, one side plate of the gusset plate is arranged on the footboard, the other side plate of the gusset plate is connected to the backrest, and the backrest is arranged on the footboard through the gusset plate.
[0014] In one of the embodiments, the sofa body further has two sofa armrests, and the two sofa armrests are symmetrically located on both sides of the bed frame.
[0015] In the embodiment of the present application, the cushion is fixed to the connecting rod by connecting the first linkage rod and the second linkage rod.
[0016] In the embodiment of the present application, the pivot point of the first linkage rod and the second linkage rod is pivotally connected to the bed frame. The other end of the first linkage rod is arranged on the footboard through a chute member, and the other end of the second linkage rod is connected to the connecting rod. At the same time, the cushion is fixed to the connecting rod. In this way, during the folding process of the single-fold sofa bed, the footboard will drive the other end of the first linkage rod to slide in the chute, thereby driving the first linkage rod and the second linkage rod to rotate around the pivot point, and further causing the connecting rod to drive the cushion away from the arc grooves of the bed frame and the footboard and slide out of the arc groove of the footboard. Conversely, during the unfolding process of the single-fold sofa bed, the connecting rod drives the cushion to approach the arc grooves of the bed frame and the footboard and slide into the arc groove of the footboard. In this way, the interference between the cushion and the footboard can be avoided, and at the same time, the cushion can move into place when the single-fold sofa bed is in the fully opened or fully folded state. The cushion linkage mechanism of the present application enables the cushion not to consider the slot design during the design, making the design more convenient and diverse, and the overall appearance more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:
[0018] Figure 1 is the unfolded perspective view of the current single-fold sofa bed;
[0019] Figure 2 is Figure 1 the partial enlarged view at A in
[0020] Figure 3 is the schematic diagram of the cushion linkage mechanism of the first embodiment of the present application connecting the cushion and the footboard Figure 1 ;
[0021] Figure 4 is Figure 3 the partial schematic diagram of
[0022] Figure 5 is Figure 4 the decomposition of
[0023] Figure 6 is the schematic diagram of the cushion linkage mechanism of the first embodiment of the present application connecting the cushion and the footboard Figure 2 ;
[0024] Figure 7Schematic diagram of the seat cushion linkage mechanism connecting the seat cushion and the footrest in the first embodiment of the present application Figure 3 ;
[0025] Figure 8 Exploded view of the decorative panel and the footrest of the seat cushion linkage mechanism in the first embodiment of the present application;
[0026] Figure 9 Schematic diagram of the unfolded state of a one-fold sofa bed in the second embodiment of the present application;
[0027] Figure 10 Schematic diagram of the folded state of a one-fold sofa bed in the second embodiment of the present application. Detailed implementation manners
[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, 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 application.
[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0030] In addition, regarding the use of "first", "second", etc. in this article, it does not particularly refer to the order or sequence, nor is it used to limit the present application. It is only used to distinguish components or operations described with the same technical terms.
[0031] Please refer to Figures 3 to 5 , Figure 3 Schematic diagram of the seat cushion linkage mechanism connecting the seat cushion and the footrest in the first embodiment of the present application Figure 1 , Figure 4 is Figure 3 Partial schematic diagram of Figure 5 is Figure 4Exploded view. As shown in the figure, the seat cushion linkage mechanism 10 of this embodiment is applied to the linkage between the seat cushion 201 and the footrest 202 of a one-fold sofa bed. The seat cushion linkage mechanism 10 includes two linkage members 1, two chute members 2 and a connecting rod 3. The two linkage members 1 are symmetrically arranged on both sides in the width direction of the one-fold sofa bed. Each linkage member 1 includes a first linkage rod 11 and a second linkage rod 12. One end of the first linkage rod 11 is connected to one end of the second linkage rod 12. In this embodiment, the first linkage rod 11 and the second linkage rod 12 are of an integral structure. The connecting end of the first linkage rod 11 and the second linkage rod 12 has a pivot point 13. The pivot point 13 is pivotally connected to the bed frame 203 on the side of the one-fold sofa bed close to the footrest 202. The pivot point 13 is a round hole, and the first linkage rod 11 and the second linkage rod 12 are pivotally connected to the bed frame 203 by a pivot rod passing through the round hole.
[0032] As described above, the two chute members 2 are symmetrically arranged on the footrests 202 on both sides of the one-fold sofa bed. Each chute member 2 has a chute 21 and a sliding rod 22. The sliding rod 22 passes through the chute 21 and is connected to the other end of the first linkage rod 11. In this embodiment, the chute member 2 further has a chute plate 23. The chute plate 23 is fixed at the lower notch position of the arc-shaped groove 2021 of the footrest 202. The chute plate 23 can be specifically fixed to the footrest 202 by screws. The chute 21 is located on the chute plate 23, and the extending direction of the chute 21 faces the bed frame 203. The chute 21 is a rectangular through hole. Both ends of the connecting rod 3 are connected to the other ends of the second linkage rods 12 of the two linkage members 1. The connecting rod 3 is connected to the seat cushion 201.
[0033] In the seat cushion linkage mechanism 10 of this embodiment, the pivot point 13 of the first linkage rod 11 and the second linkage rod 12 is pivotally connected to the bed frame 203, the other end of the first linkage rod 11 is arranged on the footrest 202 through the chute member 2, the other end of the second linkage rod 12 is connected to the connecting rod 3, and at the same time, the seat cushion 201 is fixed on the connecting rod 3. In this way, when the one-fold sofa bed is in the unfolded state, the other end of the first linkage rod 11 is located on the side close to the bed frame 203 inside the chute 21, and the seat cushion 201 is located inside the arc-shaped groove 2021 of the footrest 202.
[0034] As described above, please refer to Figure 6 and Figure 7 , which are respectively the schematic diagrams of the seat cushion linkage mechanism of the first embodiment of this application connecting the seat cushion and the footrest Figure 2 and schematic Figure 3 , where Figure 6 is a schematic diagram of the semi-closed state of the one-fold sofa bed, Figure 7It is a schematic diagram of the folded state of a single-fold sofa bed. As shown in the figure, during the folding process of the single-fold sofa bed, the other end of the first linkage rod 11 is driven by the footboard 202 to slide away from the bed frame 203 in the chute 21, thereby driving the first linkage rod 11 and the second linkage rod 12 to rotate around the pivot point 13. Furthermore, the connecting rod 3 drives the seat cushion 201 away from the bed frame 203 and the arc-shaped groove 2021 of the footboard 202 and slides out of the arc-shaped groove 2021 of the footboard 202. Conversely, during the unfolding process of the single-fold sofa bed, the connecting rod 3 drives the seat cushion 201 close to the bed frame 203 and the arc-shaped groove 2021 of the footboard 202 and slides into the arc-shaped groove 2021 of the footboard 202. In this way, during the unfolding and folding processes of the single-fold sofa bed, interference between the seat cushion 201 and the footboard 202 can be avoided, and at the same time, the seat cushion 201 can move into place when the single-fold sofa bed is in the fully opened or fully folded state. The seat cushion linkage mechanism 10 of this embodiment enables the seat cushion 201 not to require a slot design during design, making the design more convenient and diverse, and the overall appearance more beautiful.
[0035] Please refer to Figure 8 simultaneously, which is an exploded view of the decorative plate and the footboard of the seat cushion linkage mechanism of the first embodiment of the present application. As shown in the figure, in this embodiment, the seat cushion linkage mechanism 10 further includes a decorative plate 4. The shape of the decorative plate 4 corresponds to that of the footboard 202, and here "corresponding" means that the shapes of the decorative plate 4 and the footboard 202 are the same. The decorative plate 4 is attached to the outer side of the footboard 202. The decorative plate 4 is used to cover some screws on the footboard 202 to improve the overall aesthetics.
[0036] Please refer to Figure 9 and Figure 10 simultaneously, which are schematic diagrams of the unfolded state and the folded state of a single-fold sofa bed according to the second embodiment of the present application. As shown in the figure, the single-fold sofa bed 100 of this embodiment includes the seat cushion linkage mechanism 10 and the sofa main body 20 in the above-mentioned first embodiment. The sofa main body 20 has a seat cushion 201, a footboard 202, a bed frame 203, and a backrest 204. The bed frame 203 is provided on the sofa main body 20. The bed frame 203 can be stored and unfolded in the sofa main body 20. The bed frame 203 is a common single-fold bed frame on the market, and its structure and folding process are conventional technical means in the art. Therefore, the structure and folding process of the bed frame 203 will not be described in detail here in this embodiment. The seat cushion linkage mechanism 10 connects the bed frame 203 and the footboard 202, and the specific connection method is as described in the above-mentioned first embodiment.
[0037] As described above, the seat cushion 201 is connected to the connecting rod 3 of the seat cushion linkage mechanism 10. The backrest 204 is disposed on the footrest 202. The backrest 204 is disposed on the footrest 202 through the angle plate 30. Specifically, one side plate of the angle plate 30 is disposed on the footrest 202. The other side plate of the angle plate 30 is connected to the backrest 204. In this embodiment, the sofa main body 20 further has two sofa armrests (not shown in the figure), and the two sofa armrests are symmetrically located on both sides of the bed frame 203.
[0038] In summary, the present application provides a seat cushion linkage mechanism and a folding sofa bed. The pivot point of the first linkage rod and the second linkage rod is pivotally connected to the bed frame. The other end of the first linkage rod is disposed on the footrest through the chute member. The other end of the second linkage rod is connected to the connecting rod, and at the same time, the seat cushion is fixed on the connecting rod. Thus, during the folding process of the folding sofa bed, the footrest will drive the other end of the first linkage rod to slide in the chute, thereby driving the first linkage rod and the second linkage rod to rotate around the pivot point, and further causing the connecting rod to drive the seat cushion away from the arc grooves of the bed frame and the footrest and slide out of the arc groove of the footrest. Conversely, during the unfolding process of the folding sofa bed, the connecting rod drives the seat cushion to approach the arc grooves of the bed frame and the footrest and slide into the arc groove of the footrest. In this way, the interference between the seat cushion and the footrest can be avoided, and at the same time, the seat cushion can move into place when the folding sofa bed is in the fully opened or fully folded state. The seat cushion linkage mechanism of the present application enables the seat cushion not to consider the slot design during the design, making the design more convenient and diverse, and the overall appearance more beautiful.
[0039] It should be noted that in this article, the terms "including", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.
[0040] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.
Claims
1. A seat cushion linkage mechanism, applied to the linkage between the seat cushion and the footboard of a folding sofa bed, characterized in that: include: Two linkage members are symmetrically arranged on both sides of the folding sofa bed in the width direction, each of the linkage members includes a first linkage rod and a second linkage rod, one end of the first linkage rod is connected to one end of the second linkage rod, and the connecting ends of the first linkage rod and the second linkage rod have a pivot point, and the pivot point is pivotally connected to the bed frame of the folding sofa bed near the footboard; Two slide members are symmetrically arranged on the footboards on both sides of the folding sofa bed, each of the slide members has a slide and a sliding rod, and the sliding rod passes through the slide and is connected to the other end of the first linkage rod; A connecting rod, both ends of which are connected to the other ends of the second linkage rods of the two linkage members, and the connecting rod is connected to the seat cushion; The foldable sofa bed is in an unfolded state, the other end of the first linkage rod is located on a side of the slide groove close to the bed frame, and the seat cushion is located in the arc groove of the foot board. When the foldable sofa bed is folded, the foot board drives the other end of the first linkage rod to slide in the slide groove toward a side away from the bed frame, the first linkage rod and the second linkage rod rotate around the pivot point, and the connecting rod drives the seat cushion away from the bed frame and the arc groove of the foot board, and slides out of the arc groove of the foot board.
2. The seat cushion linkage mechanism according to claim 1, characterized in that: The first linkage rod and the second linkage rod are an integrated structure.
3. The seat cushion linkage mechanism according to claim 1, characterized in that: The pivot point is a round hole, and the first linkage rod and the second linkage rod are pivotally connected to the bed frame by a pivot rod passing through the round hole.
4. The seat cushion linkage mechanism according to claim 1, characterized in that: The slide slot component further comprises a slide slot plate, which is fixed to the lower notch position of the arc-shaped slot of the foot plate. The slide slot is located on the slide slot plate, and the extension direction of the slide slot is toward the bed frame.
5. The seat cushion linkage mechanism according to claim 1, characterized in that: The slide groove is a rectangular through hole.
6. The seat cushion linkage mechanism according to claim 1, characterized in that: Also includes: A decorative plate, wherein the decorative plate corresponds to the shape of the foot plate and is arranged on the outer side of the foot plate.
7. A folding sofa bed, characterized in that: include: The cushion linkage mechanism and sofa body as described in claim 1, wherein the sofa body has a bed frame, a cushion, a footboard and a backrest, the bed frame is arranged on the sofa body, the bed frame can be stored and unfolded on the sofa body, the cushion linkage mechanism connects the bed frame and the footboard, the cushion is connected to the connecting rod of the cushion linkage mechanism, and the backrest is arranged on the footboard.
8. The folding sofa bed according to claim 7, characterized in that: It further comprises: a corner plate, one side plate of which is arranged on the foot plate, the other side plate of the corner plate is connected to the backrest, and the backrest is arranged on the foot plate through the corner plate.
9. The folding sofa bed according to claim 7, characterized in that: The sofa body further comprises two sofa armrests, and the two sofa armrests are symmetrically located on both sides of the bed frame.