Telescopic and inclined adjustment integrated sofa chair
By using a double-link structure and a limiting groove design, the problem of the existing sofa and chair headrests affecting aesthetics during extension and folding is solved, achieving a miniaturized drive structure and good support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RONGMA FURNITURE CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-19
AI Technical Summary
In existing sofa and chair designs, it is difficult to ensure that the headrest can be extended and folded without compromising aesthetics while maintaining a compact drive structure and providing good head support when unfolded.
It adopts a double-link structure, including a first crank and a first connecting rod, a second connecting rod and a second crank, which realize the folding and tilting adjustment of the headrest frame through linkage. Combined with the design of the limiting groove and the limiting part, it is mechanically locked in the folded state to avoid pressure load on the drive structure and reduce wear.
The headrest can be extended and folded without affecting its appearance, while providing good support, reducing wear on the drive structure, and enhancing mechanical stability and service life.
Smart Images
Figure CN224251037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sofas and chairs, and in particular to a telescopic and tilt-adjustable integrated sofa and chair. Background Technology
[0002] The electric sofa features adjustable backrest height, which also changes the user's position on the seat. For example, when the backrest is lowered, the user moves their hips backward, and vice versa. The backrest height can be controlled via buttons on the backrest, allowing for a more comfortable posture and meeting ergonomic design requirements.
[0003] However, in existing sofa and chair designs, the tilting and telescopic folding of the headrest has always been one of the design challenges. It is necessary to ensure that the overall drive structure is small, while ensuring that the headrest does not affect the aesthetics when folded and can provide good support for the head when unfolded, and the drive structure cannot be too large. Utility Model Content
[0004] The main purpose of this utility model is to propose a telescopic and tilt-adjustable integrated sofa chair, which aims to improve the existing headrest support structure of sofa chairs, so as to realize its telescopic and folding while reducing the impact on aesthetics, and at the same time, the drive structure is smaller in size.
[0005] To achieve the above objectives, this utility model proposes a telescopic and tilt-adjustable integrated sofa chair, comprising:
[0006] A backrest frame, the backrest frame including two spaced-apart side plates and a crossbeam disposed between the two side plates;
[0007] A support plate, wherein the support plate is disposed on the inner side of the side plate;
[0008] A linkage structure, the linkage structure comprising a first component and a second component, the first component comprising a first crank and a first connecting rod; the second component comprising a second connecting rod and a second crank;
[0009] The lower end of the first crank is pivotally mounted to the middle of the support plate, and the upper end of the first crank is pivotally connected to the lower end of the first connecting rod.
[0010] The lower end of the second connecting rod is pivotally mounted on the upper part of the support plate, and the upper end of the second connecting rod is pivotally connected to the lower end of the second crank.
[0011] The headrest frame has the upper end of the first connecting rod and the upper end of the second crank respectively assembled and installed at the front and rear positions of the headrest frame.
[0012] When in the folded state, the lower end of the second crank abuts against the end wall of the first connecting rod;
[0013] The drive structure has one end pivotally mounted to the crossbeam and the other end pivotally mounted to the lower part of the second connecting rod.
[0014] In the actual design, a double-link structure is adopted, that is, the first component is the first crank and the first connecting rod, and the second component is the second connecting rod and the second crank;
[0015] The crank shape enables the linkage between the first and second components. When in the folded state, the lower end of the second crank abuts against the end wall of the first connecting rod, thereby locking the connecting rod structure and preventing pressure load from being applied to the drive structure. This achieves mechanical locking, avoids damage to the machinery, and can also withstand greater pressure, reducing mechanical wear.
[0016] Simultaneously, when unfolded, the tilt adjustment of the sofa chair headrest frame is achieved through the combined extension and retraction of the first and second components. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;
[0018] Figure 2 This is a cross-sectional view of the present utility model. Figure 1 ;
[0019] Figure 3 This is a schematic diagram of the state switching of this utility model;
[0020] Figure 4 This is a schematic diagram of the framework;
[0021] Figure 5 This is a schematic diagram of a swing beam.
[0022] In the picture,
[0023] 1 is the backrest frame, 11 is the side panel, and 12 is the crossbeam.
[0024] 2 is the support plate.
[0025] 3 represents the connecting rod structure, 31 represents the first crank, and 32 represents the first connecting rod.
[0026] 33 is the second crank, and 34 is the second connecting rod.
[0027] 4 is the headrest frame.
[0028] 5 is the telescopic motor, 51 is the swing beam, and 52 is the swing arm.
[0029] 61 is the limiting groove, and 62 is the limiting part. Detailed Implementation
[0030] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0031] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0033] like Figures 1 to 5 As shown, a telescopic and tilt-adjustable integrated sofa chair includes:
[0034] Backrest frame 1, the backrest frame 1 includes two spaced-apart side plates 11 and a crossbeam 12 disposed between the two side plates 11;
[0035] Support plate 2, which is disposed on the inner side of side plate 11;
[0036] The linkage structure 3 includes a first component and a second component. The first component includes a first crank 31 and a first connecting rod 32. The second component includes a second connecting rod 34 and a second crank 33.
[0037] The lower end of the first crank 31 is pivotally mounted to the middle of the support plate 2, and the upper end of the first crank 31 is pivotally connected to the lower end of the first connecting rod 32.
[0038] The lower end of the second connecting rod 34 is pivotally mounted on the upper part of the support plate 2, and the upper end of the second connecting rod 34 is pivotally connected to the lower end of the second crank 33.
[0039] The headrest frame 4 has the upper end of the first connecting rod 32 and the upper end of the second crank 33 respectively assembled and installed at the front and rear positions of the headrest frame 4.
[0040] When in the folded state, the lower end of the second crank 33 abuts against the end wall of the first connecting rod 32;
[0041] The drive structure is pivotally mounted at one end to the crossbeam 12 and at the other end to the lower part of the second connecting rod 34.
[0042] In the actual design, a double-link structure 3 is adopted, that is, the first component is the first crank 31 and the first connecting rod 32, and the second component is the second connecting rod 34 and the second crank 33;
[0043] The crank shape enables the linkage between the first and second components. When in the folded state, the lower end of the second crank 33 abuts against the end wall of the first connecting rod 32, thereby locking the connecting rod structure 3. This avoids transferring pressure load to the drive structure, achieving mechanical locking, preventing damage to the machinery, and also allowing it to withstand greater pressure and reduce mechanical wear.
[0044] At the same time, when unfolded, the tilt adjustment of the sofa chair headrest frame 4 is achieved through the joint extension and retraction of the first and second components.
[0045] Specifically, the wall of the second connecting rod 34 is provided with a limiting groove 61, and the first crank 31 is provided with a limiting part 62 that cooperates with the limiting groove.
[0046] In this embodiment of the invention, the limiting part extends in an arc shape, and the limiting groove and the limiting part together form a support when folded.
[0047] Specifically, the first crank 31 includes a first shank portion and a first curved portion extending from the first shank portion, wherein the first curved portion bends outward horizontally and the limiting portion and the limiting groove are in the same horizontal position.
[0048] In this embodiment of the utility model, the bending angle between the first handle and the first curved part is 80 degrees to 110 degrees, so that when folded, the connecting rod structure 3 can be stored inside the backrest, avoiding the exposure of the connecting rod structure 3.
[0049] Specifically, the second crank 33 includes a first bending portion, a first rod portion extending from the first bending portion, and a second bending portion extending from the first rod portion. The second crank 33 can provide better support, that is, the second bending portion can make the headrest frame 4 horizontal when folded, and make the wall of the second bending frame relatively flush or close to the headrest frame 4, thereby forming a better support area.
[0050] In this embodiment of the invention, the driving structure is a telescopic motor, and the telescopic end of the telescopic motor is pivotally connected to the support beam.
[0051] The telescopic motor has swing holes on both sides, and a swing arm is pivotally connected to the swing hole. The other end of the swing arm is fixedly connected to the swing beam. The two ends of the swing beam are fixedly connected to the second connecting rods 34 on both sides, thereby driving the linkage of the first component and the second component.
[0052] Specifically, the swing beam extends in an arc from the middle to both ends, which can further reduce the size of the folded linkage structure 3.
[0053] In this embodiment of the utility model, a fixed triangular plate is provided between the swing beam and the second connecting rod 34, thereby increasing the connection area.
[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A telescopic and tilt-adjustable integrated sofa chair, characterized in that, include: A backrest frame, the backrest frame including two spaced-apart side plates and a crossbeam disposed between the two side plates; A support plate, wherein the support plate is disposed on the inner side of the side plate; A linkage structure, the linkage structure comprising a first component and a second component, the first component comprising a first crank and a first connecting rod; the second component comprising a second connecting rod and a second crank; The lower end of the first crank is pivotally mounted to the middle of the support plate, and the upper end of the first crank is pivotally connected to the lower end of the first connecting rod. The lower end of the second connecting rod is pivotally mounted on the upper part of the support plate, and the upper end of the second connecting rod is pivotally connected to the lower end of the second crank. The headrest frame has the upper end of the first connecting rod and the upper end of the second crank respectively assembled and installed at the front and rear positions of the headrest frame. When in the folded state, the lower end of the second crank abuts against the end wall of the first connecting rod; The drive structure has one end pivotally mounted to the crossbeam and the other end pivotally mounted to the lower part of the second connecting rod.
2. The telescopic and tilt-adjustable integrated sofa chair as described in claim 1, characterized in that: The second connecting rod has a limiting groove on its wall, and the first crank has a limiting part that cooperates with the limiting groove.
3. The telescopic and tilt-adjustable integrated sofa chair as described in claim 2, characterized in that: The limiting part extends in an arc shape.
4. The telescopic and tilt-adjustable integrated sofa chair as described in claim 2, characterized in that: The first crank includes a first shank portion and a first curved portion extending from the first shank portion, the first curved portion being bent outward horizontally and positioning the limiting portion and the limiting groove in the same horizontal position.
5. The telescopic and tilt-adjustable integrated sofa chair as described in claim 4, characterized in that: The bending angle between the first handle and the first curved part is 80 degrees to 110 degrees.
6. The telescopic and tilt-adjustable integrated sofa chair as described in claim 2, characterized in that: The second crank includes a first bend, a first rod extending from the first bend, and a second bend extending from the first rod.
7. The telescopic and tilt-adjustable integrated sofa chair as described in claim 2, characterized in that: The drive structure is a telescopic motor, and the telescopic end of the telescopic motor is pivotally connected to the support beam. The telescopic motor has swing holes on both sides, and a swing arm is pivotally connected to the swing hole. The other end of the swing arm is fixedly connected to the swing beam, and the two ends of the swing beam are fixedly connected to the second connecting rods on both sides respectively.
8. The telescopic and tilt-adjustable integrated sofa chair as described in claim 7, characterized in that: The swing beam extends in an arc from the middle towards both ends.
9. The telescopic and tilt-adjustable integrated sofa chair as described in claim 7, characterized in that: A fixed triangular plate is provided between the swing beam and the second connecting rod.