An adaptive adjustable office chair

Abstract

This invention discloses an adaptively adjustable office chair, comprising: a chair back; a lumbar support movably connected to the chair back, defining a vertical rotation axis in its middle, wherein rotation of the lumbar support causes one side to flip forward and the other side to flip backward to match the user's left or right sitting posture; a neck pillow movably connected to the chair back, defining a vertical rotation axis in its middle, wherein rotation of the neck pillow causes one side to flip forward and the other side to flip backward; and a transmission assembly, drivingly connecting the lumbar support and the neck pillow, such that when the lumbar support rotates, the neck pillow rotates synchronously in the opposite direction, so that when the user sits in a side-leaning posture, causing the corresponding side of the lumbar support to flip backward, the corresponding side of the neck pillow flips forward to support the user's neck. The beneficial effect of this invention is that it achieves coordinated support for the waist and neck, solving the problems of spinal distortion and prolonged sitting fatigue caused by misaligned support in traditional office chairs.

Description

Technical Field

[0001] This invention relates to an adaptively adjustable office chair, specifically to the mechanical structure design of an office chair with ergonomic linkage adjustment function. Background Technology

[0002] Traditional office chairs with existing technology typically employ fixed or height-adjustable lumbar and neck support structures. When users adopt a tilted posture to the left or right, the lumbar support cannot dynamically adjust its support position to match the body's tilt, and the neck support also struggles to adapt to the neck angle simultaneously. This results in misalignment of lumbar and neck support, which can easily lead to spinal distortion and muscle fatigue over time. While some office chairs do have the function of individually adjusting the lumbar support or neck support, users need to manually adjust them one by one, which is cumbersome and cannot keep up with changes in posture in real time, making it difficult to meet the comfort support needs of users in dynamic office scenarios. Summary of the Invention

[0003] The purpose of this invention is to provide an adaptively adjustable office chair that provides coordinated support for the waist and neck, thereby solving the problems of spinal distortion and fatigue caused by misaligned support in traditional office chairs.

[0004] The present invention is achieved through the following technical solution.

[0005] An adaptively adjustable office chair, comprising:

[0006] Chair back;

[0007] The lumbar support is movably connected to the backrest, defining the vertical axis of rotation in its middle. The rotation of the lumbar support causes one side to flip forward and the other side to flip backward to match the user's left or right sitting posture.

[0008] The neck pillow is movably connected to the backrest, defining the vertical axis of rotation in its middle. The rotation of the neck pillow causes one side to flip forward and the other side to flip backward.

[0009] The transmission component connects the lumbar support and the neck pillow, so that when the lumbar support rotates, the neck pillow rotates synchronously in the opposite direction. When the user is sitting on one side, the corresponding side of the lumbar support flips backward, and the corresponding side of the neck pillow flips forward to support the user's neck.

[0010] As a further improvement of the present invention, the transmission assembly includes two traction ropes that are kept in a taut state, one end of which is connected to the left side of the back of the lumbar support and the other end of which is connected to the left side of the back of the neck pillow, and the other end of which is connected to the right side of the back of the lumbar support and the other end of which is connected to the right side of the back of the neck pillow.

[0011] As a further improvement of the present invention, the chair back includes a chair back frame, a chair back frame connected to the chair back frame and located in front of the chair back frame, a chair back layer with its edge connected to the chair back frame, and a lumbar support on the back of the chair back layer.

[0012] As a further improvement of the present invention, the middle part of the chair back frame is provided with a lumbar support seat that extends towards the lumbar support, and the middle part of the back of the lumbar support is provided with a lumbar support pivot structure, and the lumbar support pivot structure is rotatably connected to the lumbar support seat.

[0013] As a further improvement of the present invention, a first connector is provided on both sides of the waist support pivot structure, and a limiting cavity is provided in the first connector. A first ball head is provided at one end of the traction rope connected to the waist support. The first traction rope passes through the first connector and the first ball head is placed in the limiting cavity of the first connector.

[0014] As a further improvement of the present invention, the top of the chair back frame has a neck pillow seat extending toward the neck pillow, and a neck pillow pivot structure is provided in the middle of the back of the neck pillow, and the neck pillow pivot structure is rotatably connected to the neck pillow seat.

[0015] As a further improvement of the present invention, a second connector is provided on both sides of the neck pillow pivot structure, and a limiting cavity is provided inside the second connector. A second ball head is provided at one end of the traction rope connected to the neck pillow. The second traction rope passes through the second connector and the second ball head is placed inside the limiting cavity of the second connector.

[0016] As a further improvement of the invention, the traction rope is arranged along the chair back frame.

[0017] As a further improvement of the present invention, the chair back frame has a resilience, and its top is connected to the top of the chair back frame. The lower left and right sides are provided with rearward extending insert rods. The chair back frame forms two side-extending brackets that correspond to the two insert rods respectively. The insert rods slide back and forth and are inserted into the corresponding side brackets.

[0018] The beneficial effects of this invention are:

[0019] The linkage mechanism achieved through the transmission components ensures that the lower back and neck always receive coordinated support regardless of how the user leans to the side. This avoids the spinal distortion caused by misaligned support in traditional chairs, effectively relieving muscle fatigue caused by prolonged sitting, achieving dynamic follow-up support, and improving the comfort of sitting posture and the level of spinal health protection. Attached Figure Description

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0021] Figure 1 This is a schematic diagram of the chair back structure;

[0022] Figure 2This is a schematic diagram of the transmission assembly.

[0023] Figure 3 This is a structural diagram of a lumbar support.

[0024] Figure 4 This is a schematic diagram of the neck pillow. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0027] This embodiment illustrates an adaptively adjustable office chair that solves the problem of traditional office chairs failing to provide coordinated support according to the user's tilted sitting posture. Specifically, refer to... Figures 1-4 The office chair includes a backrest 1, a lumbar support 2, a neck pillow 3, and a transmission assembly. The backrest 1 serves as the supporting base for the entire backrest system. The lumbar support 2 is movably connected to the backrest 1, defining a vertical axis of rotation in the middle. The lumbar support 2 can rotate at a certain angle around this vertical axis. When the lumbar support 2 rotates, one side can flip forward to fit the side of the user's waist, while the other side flips backward. This design is intended to match non-standard sitting postures of users leaning to the left or right. Even if the user's body leans to one side, the lumbar support 2 can dynamically adjust to provide lateral support. The neck pillow 3 is also movably connected to the backrest 1, also defining a vertical axis of rotation in the middle. Its rotation mechanism is similar to that of the lumbar support 2, allowing one side to flip forward and the other side to flip backward, thus adapting to the neck support position needs of users of different body types. The transmission assembly connects the lumbar support 2 and the neck pillow 3, causing the neck pillow 3 to rotate synchronously in the opposite direction when the lumbar support 2 rotates. Specifically, when the user is sitting with their body leaning to one side, the left side of the lumbar support 2 will flip backward to support the user's lower back when the user leans to the left. At this time, the transmission assembly will drive the right side of the neck pillow 3 to flip forward to support the user's neck, and vice versa. This linkage mechanism ensures that the lower back and neck always receive coordinated support regardless of how the user leans, avoiding spinal distortion caused by misaligned support in traditional chairs. This effectively relieves muscle fatigue caused by prolonged sitting, achieving true dynamic following support and greatly improving the comfort of sitting posture and the level of spinal health protection.

[0028] In this embodiment, the transmission component employs a flexible traction method. Specifically, the transmission component includes two traction ropes 4 that remain taut. These two traction ropes 4 are respectively arranged on both sides of the chair back 1. One end of one traction rope 4 is connected to the left side of the back of the lumbar support 2, and the other end is connected to the left side of the back of the neck pillow 3; one end of the other traction rope 4 is connected to the right side of the back of the lumbar support 2, and the other end is connected to the right side of the back of the neck pillow 3. When the lumbar support 2 is deflected to the left by the user's back pressure, the connection point on the left side of the back of the lumbar support 2 moves backward, pulling the left traction rope 4. Since the traction rope 4 remains taut, this tension is transmitted to the connection point on the left side of the back of the neck pillow 3, forcing the left side of the neck pillow 3 to move backward, thereby causing the right side of the neck pillow 3 to flip forward relatively, thus providing support for the user's neck. This structural design eliminates complex gear or linkage mechanisms, utilizing the flexible transmission characteristics of ropes. This not only reduces the processing precision and assembly difficulty of parts, but also reduces noise generated by mechanical wear, improves the durability and ease of maintenance of the product, and allows the transmission system to be discreetly integrated inside the chair back 1 without affecting the aesthetic appearance.

[0029] In this embodiment, the chair back 1 includes a chair back frame 11, a chair back frame 12 connected to the chair back frame 11 and located in front of the chair back frame 11, and a chair back layer (not shown in the figure) with its edges connected to the chair back frame 12. The chair back frame 11, as the main load-bearing skeleton, is preferably made of high-strength metal materials such as aluminum alloy or steel to ensure that it does not deform during long-term use. The chair back frame 12 is connected to the front of the chair back frame 11, serving a shaping and supporting function. Its material can be a composite material with a certain degree of elasticity, so that it can undergo slight deformation under stress to adapt to the human body curve. The chair back layer is laid on the chair back frame 12, usually using breathable mesh or elastic fabric, and its edges are tightly connected to the chair back frame 12 by stitching or bonding, forming the backrest surface that the user directly contacts. The lumbar support 2 is supported on the back of the chair back. This design ensures that the adjustment of the lumbar support 2 does not directly compress the user's back, but indirectly provides support by pushing the chair back. This ensures both support strength and maintains the flatness and comfort of the backrest surface, avoiding the foreign body sensation caused by hard protrusions.

[0030] In this embodiment, a lumbar support seat 13 extending towards the lumbar support 2 is provided in the middle of the backrest frame 11. The lumbar support seat 13 can be a protrusion stamped into the body of the backrest frame 11, or it can be an independently welded or bolted bracket. Its main function is to provide a pivot point for the lumbar support 2. A lumbar support pivot structure 21 is provided in the middle of the back of the lumbar support 2. This structure can be an injection-molded bushing or a metal pivot seat. The lumbar support pivot structure 21 is rotatably connected to the lumbar support seat 13, thereby forming the aforementioned vertical rotation axis. This central pivot setting allows the lumbar support 2 to swing around the axis like a seesaw when subjected to lateral force, ensuring the stability and reliability of the rotation process. At the same time, setting the rotation center in the middle of the lumbar support 2 can most effectively transmit the support force to both sides of the user's lumbar spine, preventing the lumbar support 2 from jamming or shaking during rotation, significantly improving the mechanical feel of the adjustment mechanism and the accuracy of the support, so that the user can feel delicate feedback when making slight tilting movements.

[0031] In this embodiment, first connectors 22 are provided on both sides of the lumbar support pivot structure 21. These first connectors 22 are typically integrally formed with the lumbar support 2 or fixed to the back of the lumbar support 2 as independent accessories. Each first connector 22 has a limiting cavity, shaped to accommodate the connector at the end of the traction rope 4. One end of the traction rope 4 connecting to the lumbar support 2 has a first ball head 41. The first traction rope 4 passes through the first connector 22, and the first ball head 41 is placed within the limiting cavity of the first connector 22. This engagement of the ball head and the limiting cavity allows the traction rope 4 to swing freely within a certain angle range, preventing excessive shearing force and breakage caused by a rigid connection during the rotation of the lumbar support 2. Simultaneously, the ball head is confined within the cavity, effectively preventing the traction rope 4 from detaching from the connector and ensuring the safety of the transmission system.

[0032] In this embodiment, the top of the chair back frame 11 has a neck pillow seat 14 extending towards the neck pillow 3, similar to the lumbar support seat 13. The neck pillow seat 14 extends forward from the top of the chair back frame 11, providing the necessary installation position and rotational freedom for the neck pillow 3. A neck pillow pivot structure 31 is provided in the middle of the back of the neck pillow 3. This structure is similar to the lumbar support pivot structure 21, also designed to allow rotation about a vertical axis. The neck pillow pivot structure 31 is rotatably connected to the neck pillow seat 14, thus establishing the rotation center of the neck pillow 3. By setting the rotation center of the neck pillow 3 in the middle, and with the help of the traction ropes 4 on both sides, the tilt and lateral adjustment of the neck pillow 3 can be achieved, allowing it to perfectly conform to the physiological curvature of the user's cervical spine. This independent pivot connection means that the adjustment of the neck pillow 3 no longer depends on the overall deformation of the chair back 1, but has an independent dimension of movement, greatly enhancing the support experience for the head and neck and reducing cervical spine pressure caused by prolonged desk work.

[0033] In this embodiment, second connectors 32 are provided on both sides of the neck pillow pivot structure 31. These second connectors 32 are symmetrically distributed on both sides of the neck pillow pivot structure 31, and their internal structure corresponds to that of the first connector 22. Each second connector 32 has a limiting cavity, and one end of the traction rope 4 connected to the neck pillow 3 has a second ball head 42. The second traction rope 4 passes through the second connector 32, and the second ball head 42 is placed within the limiting cavity of the second connector 32. This ball-head linkage connection structure not only ensures that the traction rope 4 can smoothly transmit power when pulling the neck pillow 3, but also allows the connection point to adaptively adjust its angle according to the curvature of the neck pillow 3 during rotation, avoiding stress concentration at the connection point.

[0034] In this embodiment, to further improve the neatness of the traction rope 4 arrangement and prevent the rope from tangling or interfering during use, the traction rope 4 is arranged along the backrest frame 11. Specifically, the backrest frame 11 may have cable trays, cable clips, or conduit structures inside or on the back, through which the traction rope 4 is threaded or clipped. This concealed wiring method protects the traction rope 4 from wear and tear from the external environment and makes the backrest 1 look cleaner and more aesthetically pleasing, without any messy exposed cables. At the same time, arranging it along the rigid backrest frame 11 ensures that the tension path of the traction rope 4 is the shortest and most stable, reducing vibration and slack caused by excessively long or suspended ropes. This ensures the immediacy and accuracy of power transmission between the lumbar support 2 and the neck pillow 3, allowing for rapid response to every minor adjustment by the user and improving the quality of human-computer interaction.

[0035] In this embodiment, to further improve the elasticity of the backrest frame 12 and enhance the support for the lower back, the backrest frame 12 is designed to be resilient. Its top connects to the top of the backrest frame 11, forming a fixed fulcrum. Rearwardly extending inserts 121 are provided on the left and right sides of the lower part of the backrest frame 12; these inserts 121 are typically integrally formed with the backrest frame 12. The backrest frame 11 has two side-extending brackets 111 corresponding to the two inserts 121, with the inserts 121 sliding back and forth into their respective side-supports 111. This sliding engagement of the inserts 121 and the side-supports 111 constitutes a floating connection mechanism. When a user leans against the backrest 1, the backrest frame 12 shifts slightly backward under force, and the inserts 121 slide backward within the side-supports 111, utilizing the resilience of the backrest frame 12 itself to provide cushioning. This structure not only effectively absorbs back impact but also automatically adjusts the backrest's firmness according to the user's weight, providing a more personalized support experience. At the same time, this sliding plug-in structure also provides additional space for the installation of the lumbar support 2 and neck pillow 3, so that the entire chair back system can always maintain the integrity and coordination of the structure during dynamic adjustment.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptively adjustable office chair, characterized in that, include: Chair back; The lumbar support is movably connected to the backrest and defines the vertical axis of rotation in its middle. The rotation of the lumbar support causes one side to flip forward and the other side to flip backward to match the user's left or right sitting posture. A neck pillow, movably connected to the chair back, defines a vertical axis of rotation in its middle section. Rotation of the neck pillow causes one side to flip forward and the other side to flip backward. A transmission assembly is provided, which drives the lumbar support and the neck pillow, so that when the lumbar support rotates, the neck pillow rotates synchronously in the opposite direction. When the user is sitting with their back to one side, causing the corresponding side of the lumbar support to flip backward, the corresponding side of the neck pillow flips forward to support the user's neck.

2. The office chair according to claim 1, characterized in that, The transmission assembly includes two tensioned traction ropes, one of which is connected at one end to the left side of the backrest and at the other end to the left side of the back of the neck pillow, and the other traction rope is connected at one end to the right side of the backrest and at the other end to the right side of the back of the neck pillow.

3. The office chair according to claim 2, characterized in that, The chair back includes a chair back frame, a chair back frame connected to the chair back frame and located in front of the chair back frame, and a chair back layer with its edges connected to the chair back frame. The lumbar support is supported on the back of the chair back layer.

4. The office chair according to claim 3, characterized in that, The backrest frame has a lumbar support seat extending towards the lumbar support in the middle, and the lumbar support pivot structure is provided in the middle of the back of the lumbar support, and the lumbar support pivot structure is rotatably connected to the lumbar support seat.

5. The office chair according to claim 4, characterized in that, The lumbar support pivot structure has a first connector on each side, and a limiting cavity is provided in the first connector. The end of the traction rope connected to the lumbar support has a first ball head. The first traction rope passes through the first connector and the first ball head is placed in the limiting cavity of the first connector.

6. The office chair according to claim 3, characterized in that, The top of the chair back frame has a neck pillow seat that extends toward the neck pillow, and a neck pillow pivot structure is provided in the middle of the back of the neck pillow, and the neck pillow pivot structure is rotatably connected to the neck pillow seat.

7. The office chair according to claim 6, characterized in that, The neck pillow pivot structure has a second connector on each side, and a limiting cavity is provided inside the second connector. The end of the traction rope connected to the neck pillow has a second ball head. The second traction rope passes through the second connector and the second ball head is placed inside the limiting cavity of the second connector.

8. The office chair according to claim 3, characterized in that, The traction rope is arranged along the chair back frame.

9. The office chair according to claim 3, characterized in that, The chair back frame is resilient, and its top is connected to the top of the chair back frame. The lower left and right sides are provided with rearward extending inserts. The chair back frame forms two side-extending brackets that correspond to the two inserts respectively. The inserts slide back and forth into the corresponding side brackets.

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