Chair chassis buffer connecting structure
By setting a buffer connection structure between the chair base and the seat, and utilizing the rotational switching of the buffer seat and the guide seat, a zero-gravity reclining posture is achieved, solving the problems of complex structure and high cost in existing technologies, and improving the comfort and economy of the chair.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHUBO SMART HOME CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-19
AI Technical Summary
Existing zero-gravity recliners have complex structures and high implementation costs, which affect the comfort and economy of the seats.
A buffer connection structure is set between the chair base and the seat, including a buffer seat and a guide seat that are distributed vertically and rotatably connected. The buffer seat is driven by human power to rotate backward to switch to the reclining mode, which drives the buffer part to rotate downward. In conjunction with the reclining process of the backrest, a buffer effect and a zero-gravity feeling are achieved.
It improves the comfort of the chair, has a simple structure and is easy to operate, achieves a zero-gravity reclining posture, and reduces structural complexity and cost.
Smart Images
Figure CN224251015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chair technology, and in particular to a chair chassis buffer connection structure. Background Technology
[0002] A recliner is a chair used for rest and other purposes. Because recliners are more relaxing than traditional chairs, allowing people to relax and rest their whole body in a semi-sleeping state, they are widely used in hospital companion chairs, nap chairs, outdoor leisure chairs, etc.
[0003] As people's demands for seat comfort increase, zero-gravity reclining chairs have emerged. However, in the existing technical solutions, the structure for achieving a zero-gravity reclining posture is relatively complex and the implementation cost is relatively high, so there is room for improvement. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a cushioning connection structure for a chair base. This structure, consisting of a cushioning seat and a guide seat that are vertically distributed and rotatably connected, is installed between the chair base and the seat. Rotating the guide seat backward to switch to a reclining mode causes the cushioning part to rotate downward, which, in conjunction with the reclining of the backrest, gradually lowers the rear of the seat, creating a cushioning effect and a zero-gravity feeling. This significantly improves the comfort of the chair. The structure is simple, driven by human power, and easy to operate. It solves the technical problems of existing technologies where the zero-gravity reclining posture is structurally complex and relatively costly to achieve.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A chair base buffer connection structure includes a buffer seat and a guide seat arranged vertically and rotatably connected at one end. The guide seat has an arc-shaped guide groove along the rotation path of the buffer seat. The buffer seat is movably limited within the guide groove. The structure also includes a connecting rod connected to the buffer seat. When the connecting rod is subjected to an external force, it drives the buffer seat to rotate and is guided by the guide groove and locked at the rotation endpoint.
[0007] Preferably, the front ends of the buffer seat and the guide seat are rotatably connected to each other; the guide seat is provided with a guide groove at the rear position near the tail end, and correspondingly, the rear position of the buffer seat near the tail end is movably limited within the guide groove; the tail end of the buffer seat is connected to the connecting rod.
[0008] Preferably, in the initial state, the guide seat is movable at the upper end of the travel of the guide groove, and there is a clearance space between the buffer seat and the guide seat to allow the buffer seat to rotate downward to its tilted state.
[0009] Preferably, the buffer seat is set horizontally in the initial state.
[0010] Preferably, the buffer seat includes a buffer plate, with an upper hinge seat extending downward from the bottom front end of the buffer plate, and the guide seat includes a guide plate, with a lower hinge seat extending upward from the top front end of the guide plate, the upper hinge seat and the lower hinge seat being hinged to each other.
[0011] Preferably, the bottom of the buffer plate extends downward to provide a limiting seat, and the lower end of the limiting seat is connected to a limiting pin that slides within the guide groove, the guide groove being formed on the side wall of the buffer plate.
[0012] Preferably, there are two hinge points symmetrically arranged on the left and right sides between the buffer seat and the guide seat; there are two guide grooves symmetrically arranged on the left and right sides on the guide seat; correspondingly, there are two limiting seats symmetrically arranged on the left and right sides on the buffer seat, and the limiting pin is horizontally connected between the two limiting seats.
[0013] Preferably, the top of the buffer seat is connected to a seat, the bottom of the guide seat is connected to a chassis, the rear end of the chassis is rotatably connected to a rotating seat, a backrest is installed on the rotating seat, the free end of the connecting rod is connected to the rotating seat, when the rotating seat rotates backward, it pulls the connecting rod downward to make the seat tilt, and when the rotating seat rotates forward to reset, it pushes the connecting rod upward to make the seat return to a horizontal position.
[0014] Preferably, the front end of the connecting rod is hinged to the buffer seat, and the rear end is hinged to the rotating seat.
[0015] Preferably, the guide seat is fixedly connected to the chassis; the buffer seat is fixedly connected to the seat; the rotating seat is configured as an inverted L-shape, with its short side end connected to the chassis, the backrest installed on its long side, and the connecting rod connected at the junction of its long and short sides; the backrest is located above the rear end of the seat; and the front bottom of the seat is retractably connected to a leg support.
[0016] The beneficial effects of this utility model are as follows:
[0017] (1) This utility model provides a buffer connection structure between the chair base and the seat, including a buffer seat and a guide seat that are distributed vertically and rotatably connected. When the seat is rotated backward to switch to the reclining mode, the buffer part rotates downward, so that the back of the seat gradually lowers in conjunction with the reclining process of the backrest, producing a buffer effect and a zero-gravity feeling, which greatly improves the comfort of the chair. The structure is simple, driven by human power, and easy to operate.
[0018] (2) This utility model achieves rotation guidance and control of rotation angle by rotating the buffer seat relative to the guide seat and limiting it in the guide groove, thereby enabling the buffer seat to rotate stably and within a certain angle range, and thus tilting as required.
[0019] (3) The present invention provides a guide groove at the rear position of the guide seat near the tail end and a movable limiter at the rear position of the buffer seat near the tail end within the guide groove, making the rotation guidance of the buffer seat more stable. Attached Figure Description
[0020] Figure 1 This is a front view of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the main structure of the buffer connection structure in this utility model. Figure 1 ;
[0022] Figure 3 This is a schematic diagram of the main structure of the buffer connection structure in this utility model. Figure 2 . Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] Example 1
[0027] like Figure 2-3 As shown, a chair base buffer connection structure includes a buffer seat 1 and a guide seat 2 arranged vertically and rotatably connected at one end. The guide seat 2 has an arc-shaped guide groove 20 along the rotation path of the buffer seat 1. The buffer seat 1 is movably limited within the guide groove 20. The structure also includes a connecting rod 3, which is connected to the buffer seat 1. When the connecting rod 3 is subjected to an external force, it drives the buffer seat 1 to rotate and is guided by the guide groove 20 and locked at the rotation endpoint.
[0028] In this embodiment, by setting up a buffer seat 1 and a guide seat 2 that are distributed vertically and rotatably connected, the buffer seat 1 rotates relative to the guide seat 2 and is limited within the guide groove 20 to obtain rotation guidance and control the rotation angle, thereby enabling the buffer seat 1 to rotate stably and within a certain angle range, thus tilting as required.
[0029] Preferably, the front ends of the buffer seat 1 and the guide seat 2 are rotatably connected to each other; the guide seat 2 is provided with a guide groove 20 at the rear position near the tail end, and correspondingly, the rear position of the buffer seat 1 near the tail end is movably limited within the guide groove 20; the tail end of the buffer seat 1 is connected to the connecting rod 3.
[0030] In this embodiment, the guide groove 20 is provided at the rear position of the guide seat 2 near the tail end. Correspondingly, the rear position of the buffer seat 1 near the tail end is limited to the guide groove 20, making the rotation guidance more stable.
[0031] Preferably, in the initial state, the guide seat 2 is movablely limited to the upper end of the stroke of the guide groove 20, and there is a clearance space between the buffer seat 1 and the guide seat 2 so that the buffer seat 1 can rotate downward to its tilted state.
[0032] Preferably, the buffer seat 1 is set horizontally in the initial state.
[0033] Preferably, the buffer seat 1 includes a buffer plate 11, with an upper hinge seat 12 extending downward from the bottom front end of the buffer plate 11. The guide seat 2 includes a guide plate 21, with a lower hinge seat 22 extending upward from the top front end of the guide plate 21. The upper hinge seat 12 and the lower hinge seat 22 are hinged to each other.
[0034] It should be noted that, since the upper hinge seat 12 is formed by the downward extension of the buffer plate 11 and the lower hinge seat 22 is formed by the upward extension of the guide plate 21, both the upper hinge seat 12 and the lower hinge seat 22 have a certain height, thereby creating a height difference between the buffer plate 11 and the guide plate 21 and forming a clearance space between them.
[0035] Preferably, the bottom of the buffer plate 11 extends downward to provide a limiting seat 13, and the lower end of the limiting seat 13 is connected to a limiting pin 14 that slides within the guide groove 20. The guide groove 20 is formed on the side wall of the buffer plate 11.
[0036] Preferably, there are two hinge points symmetrically arranged on the left and right sides between the buffer seat 1 and the guide seat 2; there are two guide grooves 20 symmetrically arranged on the left and right sides on the guide seat 2; correspondingly, there are two limiting seats 13 symmetrically arranged on the left and right sides on the buffer seat 1, and the limiting pin 14 is horizontally connected between the two limiting seats 13.
[0037] In this embodiment, two sets are symmetrically arranged on the left and right sides of the corresponding structure, making the structure more stable.
[0038] Example 2
[0039] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:
[0040] As a preferred option, such as Figure 1 As shown, the top of the buffer seat 1 is connected to the seat part 4, the bottom of the guide seat 2 is connected to the chassis 5, the rear end of the chassis 5 is rotatably connected to the rotating seat 6, the rotating seat 6 is equipped with a backrest 7, the free end of the connecting rod 3 is connected to the rotating seat 6, when the rotating seat 6 rotates backward, it pulls the connecting rod 3 downward to make the seat part 4 tilt, when the rotating seat 6 rotates forward to reset, it pushes the connecting rod 3 upward to make the seat part 4 return to horizontal.
[0041] In this embodiment, by setting a buffer connection structure between the chair base 5 and the seat 4, when switching to the reclining mode, the user sits on the seat 4 and leans back, causing the rotating seat 6 to rotate backward and pull the connecting rod 3. The connecting rod 3 further pulls the buffer part 1 downward, so that the rear of the seat 4 gradually lowers in conjunction with the rotation of the rotating seat 6, producing a buffering effect and a zero-gravity feeling, greatly improving the comfort of using the chair.
[0042] Preferably, the front end of the connecting rod 3 is hinged to the buffer seat 1, and the rear end is hinged to the rotating seat 6.
[0043] Preferably, the guide seat 2 is fixedly connected to the chassis 5; the buffer seat 1 is fixedly connected to the seat part 4; the rotating seat 6 is configured as an inverted L-shape, with its short side end connected to the chassis 5, the backrest 7 installed on its long side, and the connecting rod 3 connected at the junction of its long and short sides; the backrest 7 is located above the tail end of the seat part 4; and the front bottom of the seat part 4 is retractably connected to a leg support part 8.
[0044] In this embodiment, the chair body is used in conjunction with the leg support 8, which provides support for the legs when the chair is in a reclining state, further improving the comfort of use.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A chair chassis buffer connection structure, characterized in that, The device includes a buffer seat (1) and a guide seat (2) arranged vertically and rotatably connected at one end. The guide seat (2) has an arc-shaped guide groove (20) along the rotation path of the buffer seat (1). The buffer seat (1) is movably limited within the guide groove (20). The device also includes a connecting rod (3). The buffer seat (1) is connected to the connecting rod (3). When the connecting rod (3) is subjected to external force, it drives the buffer seat (1) to rotate and is guided by the guide groove (20) and locked at the end of the rotation.
2. The chair chassis buffer connection structure according to claim 1, characterized in that, The front ends of the buffer seat (1) and the guide seat (2) are rotatably connected to each other; the guide seat (2) is provided with the guide groove (20) at the rear position near the tail end, and correspondingly, the rear position of the buffer seat (1) near the tail end is limited to the guide groove (20); the tail end of the buffer seat (1) is connected to the connecting rod (3).
3. The chair chassis buffer connection structure according to claim 1, characterized in that, In the initial state, the guide seat (2) is movable and limited to the upper end of the stroke of the guide groove (20), and there is a clearance space between the buffer seat (1) and the guide seat (2) so that the buffer seat (1) can rotate downward to its tilted state.
4. The chair chassis buffer connection structure according to claim 3, characterized in that, In its initial state, the buffer seat (1) is set horizontally.
5. The chair chassis buffer connection structure according to claim 1, characterized in that, The buffer seat (1) includes a buffer plate (11), and an upper hinge seat (12) is provided extending downward from the bottom front end of the buffer plate (11). The guide seat (2) includes a guide plate (21), and a lower hinge seat (22) is provided extending upward from the top front end of the guide plate (21). The upper hinge seat (12) and the lower hinge seat (22) are hinged to each other.
6. The chair chassis buffer connection structure according to claim 5, characterized in that, The bottom of the buffer plate (11) extends downward to provide a limiting seat (13), and the lower end of the limiting seat (13) is connected to a limiting pin (14) that slides within the guide groove (20). The guide groove (20) is opened on the side wall of the buffer plate (11).
7. The chair chassis buffer connection structure according to claim 6, characterized in that, The hinge points between the buffer seat (1) and the guide seat (2) are symmetrically arranged on the left and right sides; the guide grooves (20) on the guide seat (2) are symmetrically arranged on the left and right sides. Correspondingly, the limiting seats (13) on the buffer seat (1) are symmetrically arranged on the left and right sides, and the limiting pin (14) is horizontally connected and set between the two limiting seats (13).
8. A chair chassis buffer connection structure according to any one of claims 1-7, characterized in that, The top of the buffer seat (1) is connected to the seat part (4), the bottom of the guide seat (2) is connected to the chassis (5), the rear end of the chassis (5) is rotatably connected to the rotating seat (6), the rotating seat (6) is equipped with a backrest (7), the free end of the connecting rod (3) is connected to the rotating seat (6), when the rotating seat (6) rotates backward, it pulls the connecting rod (3) downward to make the seat part (4) tilt, when the rotating seat (6) rotates forward to reset, it pushes the connecting rod (3) upward to make the seat part (4) return to horizontal.
9. A chair chassis buffer connection structure according to claim 8, characterized in that, The front end of the connecting rod (3) is hinged to the buffer seat (1), and the rear end is hinged to the rotating seat (6).
10. A chair chassis buffer connection structure according to claim 8, characterized in that, The guide seat (2) is fixedly connected to the chassis (5); the buffer seat (1) is fixedly connected to the seat part (4); the rotating seat (6) is configured as an inverted L-shape, with its short side end connected to the chassis (5), the backrest (7) installed on its long side, and the connecting rod (3) connected at the junction of its long and short sides; the backrest (7) is located above the tail end of the seat part (4); the bottom front end of the seat part (4) is retractably connected to a leg support part (8).