Supporting type seat waist support structure and seat

Abstract

The invention relates to the technical field of seat adjustment, in particular to a supporting type seat waist support structure and a seat. The waist support structure comprises a waist support base, a lifting driving mechanism arranged on the waist support base, a supporting base which is arranged on the waist support base in a sliding mode and is in driving connection with the lifting driving mechanism, a supporting telescopic mechanism arranged on the supporting base and a waist support assembly arranged at the output end of the supporting telescopic mechanism. The lifting driving mechanism is used for driving the supporting base to lift up and down along the waist support base, and the supporting telescopic mechanism is used for driving the waist support assembly to be close to or away from the supporting base. The invention aims to provide the supporting type seat waist support structure which is large in waist support adjusting dimension and can adapt to different body types and the seat.

Description

Technical Field

[0001] This invention relates to the field of seat adjustment technology, specifically to a supportive lumbar support structure and a seat. Background Technology

[0002] Maintaining a seated posture for extended periods, especially while driving or working in an office, puts continuous pressure on the lumbar spine, easily leading to muscle fatigue, soreness, and even lumbar spine disorders. To alleviate this problem, integrating lumbar support into the seat back has become a common feature in mid-to-high-end chairs.

[0003] The existing lumbar support structure has the following technical problems: Limited adjustment dimensions: Most traditional lumbar supports only support front-to-back (i.e., support depth) adjustment, while some products add up-to-down (i.e., support height) adjustment, forming a two-dimensional adjustment. However, the human back is three-dimensional, and different users have huge differences in body shape (such as weight, shoulder width), so this two-dimensional adjustment cannot meet everyone's needs for a good fit.

[0004] Lack of support and lateral support: Traditional flat or slightly curved lumbar supports primarily provide support for the lumbar spine, but lack effective support and wrapping for the muscles on both sides of the waist (such as the quadratus lumborum). This lack of lateral support is particularly noticeable when the vehicle is turning or the body is tilting to one side, which can easily lead to body swaying and poor comfort.

[0005] Therefore, how to design a lumbar support structure that can achieve multi-dimensional adjustment, especially providing adjustable lateral wrapping support to adapt to users of different body types and provide all-round wrapping support, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a supportive seat lumbar support structure and seat with a large lumbar support adjustment dimension that can adapt to different body types.

[0007] This invention is achieved through the following technical solution: A support-type seat lumbar support structure includes a lumbar support base, a lifting drive mechanism mounted on the lumbar support base, a support base slidably mounted on the lumbar support base and drivenly connected to the lifting drive mechanism, a support telescopic mechanism mounted on the support base, and a lumbar support assembly mounted on the output end of the support telescopic mechanism. The lifting drive mechanism is used to drive the support base to move up and down along the lumbar support base, and the support telescopic mechanism is used to drive the lumbar support assembly to move closer to or away from the support base.

[0008] The lumbar support assembly includes a lumbar support body and side pads that are respectively damped or segmented and rotatably connected to both sides of the lumbar support body.

[0009] The lumbar support body and the side pad are connected by a hinge assembly; The hinge assembly includes a first connecting post and a second connecting post. The first connecting post has a rotating groove, and the sidewall of the rotating groove is provided with a rack or a wave-shaped structure. The second connecting column is axially connected to an elastic element, which is configured such that one side of the elastic element is embedded in a rack or a wave-shaped structure to achieve suspension of the side pad rotation angle.

[0010] The elastic element is integrally formed with the second connecting column.

[0011] The support telescopic mechanism includes a telescopic drive component and a telescopic linkage component installed on the support base. The telescopic drive component drives the lumbar support component to move closer to or away from the support base through the telescopic linkage component.

[0012] The telescopic drive assembly includes a telescopic drive motor, a telescopic transmission gearbox, a telescopic lead screw, and a telescopic nut. The output end of the telescopic drive motor is driven by the telescopic lead screw through the telescopic transmission gearbox, and the telescopic nut is screwed onto the telescopic lead screw and connected to the input end of the telescopic linkage assembly.

[0013] The telescopic linkage component includes a first swing arm and a second swing arm. One end of the first swing arm is rotatably connected to the support base, and one end of the second swing arm is rotatably connected to the waist support component. The other end of the first swing arm is rotatably and slidably connected to the lumbar support assembly, and the other end of the second swing arm is slidably connected to the support base and rotatably connected to the output end of the telescopic drive assembly; The first swing arm and the second swing arm are rotatably connected at their intersection.

[0014] The lumbar support assembly is provided with a first guide groove, the support base is provided with a second guide groove, the other end of the first swing arm is rotatably connected to a first guide post, and the other end of the second swing arm is rotatably connected to a second guide post. The other end of the first swing arm is rotatably slidably connected to the lumbar support assembly through the cooperation of the first guide post and the first guide groove, and the other end of the second swing arm is rotatably slidably connected to the support base through the cooperation of the second guide post and the second guide groove.

[0015] The lifting drive mechanism includes a lifting drive motor, a lifting transmission gearbox, a lifting screw, and a lifting nut. The output end of the lifting drive motor is driven and connected to the lifting screw through the lifting transmission gearbox. The lifting nut is screwed to the lifting screw and fixedly connected to the support base. The lumbar support base is also connected to a lifting guide column parallel to the lifting direction of the support base, and the support base is slidably connected to the lifting guide column.

[0016] In addition, the present invention also discloses a seat in which a supporting lumbar support structure as described in any of the preceding claims is provided.

[0017] The beneficial effects of this invention are: This invention discloses a supportive lumbar support structure and seat. By incorporating a lumbar support base, a lifting drive mechanism, a telescopic drive component, a support base, and a lumbar support component, the lumbar support achieves electric adjustment for vertical lifting and horizontal telescopic movement. It can perfectly conform to the back curves of users of different heights and body types, providing a personalized comfort experience that traditional two-dimensional lumbar supports cannot match. Moreover, this lumbar support structure has a compact design and can be integrated as a complete module into the backrest frame of various car seats or office chairs, exhibiting strong versatility. Attached Figure Description

[0018] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the lumbar support structure of the present invention.

[0020] Figure 2 This is a partial structural diagram of the lumbar support structure of the present invention.

[0021] Figure 3 This is a schematic diagram of another part of the lumbar support structure of the present invention.

[0022] Figure 4 A schematic diagram of the structure supporting the telescopic mechanism.

[0023] Figure 5 This is a schematic diagram of the lumbar support assembly.

[0024] Figure Labels Lumbar support base--101, Lifting guide column--102, Support base--103, Lifting drive mechanism -- 201, Lifting drive motor -- 202, Lifting transmission gearbox -- 203, Lifting lead screw -- 204, Lifting nut -- 205 Lumbar support assembly -- 301, lumbar support body -- 302, side padding -- 303, hinge assembly -- 304, first connecting post -- 305, second connecting post -- 306, elastic element -- 307, arc-shaped structure -- 308 Telescopic drive assembly -- 401, Telescopic drive motor -- 402, Telescopic transmission gearbox -- 403, Telescopic lead screw -- 404, Telescopic nut -- 405 Telescopic linkage assembly--501, first swing arm--502, second swing arm--503, first guide groove--504, second guide groove--505, first guide post--506, second guide post--507. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of this invention, 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," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] like Figures 1 to 5 As shown, this embodiment discloses a supportive seat lumbar support structure and a car seat using this structure. The structure is primarily mounted on the internal frame of the seat back.

[0029] The lumbar support structure includes a lumbar support base 101, a lifting drive mechanism 201 mounted on the lumbar support base 101, a support base 103 slidably mounted on the lumbar support base 101 and drivenly connected to the lifting drive mechanism 201, a support telescopic mechanism mounted on the support base 103, and a lumbar support assembly 301 mounted on the output end of the support telescopic mechanism. The lifting drive mechanism 201 is used to drive the support base 103 to move up and down along the lumbar support base 101, and the support telescopic mechanism is used to drive the lumbar support assembly 301 to move closer to or away from the support base 103.

[0030] Specifically, in this embodiment, the lifting adjustment mechanism is equipped with a lifting drive mechanism 201 on the lumbar support base 101. This mechanism is preferably an electric screw drive system, which includes a lifting drive motor 202, a lifting transmission gearbox 203, a lifting screw 204, and a lifting nut 205. Simultaneously, at least one lifting guide column 102 is fixed on the lumbar support base 101. A movable support base 103 is screwed to the lifting screw 204 via the lifting nut 205 and is sleeved on the lifting guide column 102. Its working principle is as follows: when the lifting drive motor 202 starts, it drives the lifting screw 204 to rotate through the gearbox. Since the lifting nut 205 is fixedly connected to the support base 103, and the rotation of the support base 103 is restricted by the lifting guide column 102, the lifting nut 205 can only drive the support base 103 to perform purely vertical up-and-down movement along the lifting guide column 102.

[0031] Specifically, in this embodiment, a support telescopic mechanism is installed on the aforementioned liftable support base 103. This telescopic mechanism consists of a telescopic drive assembly 401 and a telescopic linkage assembly 501. The telescopic drive assembly 401 is also an electric screw drive system, including a telescopic drive motor 402, a telescopic transmission gearbox 403, a telescopic screw 404, and a telescopic nut 405. The output end of the telescopic drive motor 402 is driven and connected to the telescopic screw 404 through the telescopic transmission gearbox 403. The telescopic nut 405 is screwed onto the telescopic screw 404 and connected to the input end of the telescopic linkage assembly 501.

[0032] from Figure 1 It can be seen that the telescopic linkage component 501 in this embodiment is preferably an X-type scissor linkage mechanism. The telescopic linkage component 501 includes a first swing arm 502 and a second swing arm 503. One end of the first swing arm 502 is rotatably connected to the support base 103, and one end of the second swing arm 503 is rotatably connected to the waist support component 301. The other end of the first swing arm 502 is rotatably slidably connected to the waist support assembly 301, and the other end of the second swing arm 503 is slidably connected to the support base 103 and rotatably connected to the output end (i.e., the telescopic nut 405) of the telescopic drive assembly 401. The first swing arm 502 and the second swing arm 503 are rotatably connected at their intersection.

[0033] The lumbar support assembly 301 is provided with a first guide groove 504, the support base 103 is provided with a second guide groove 505, the other end of the first swing arm 502 is rotatably connected to a first guide post 506, and the other end of the second swing arm 503 is rotatably connected to a second guide post 507. The other end of the first swing arm 502 is rotatably slidably connected to the lumbar support assembly 301 through the cooperation of the first guide post 506 and the first guide groove 504, and the other end of the second swing arm 503 is rotatably slidably connected to the support base 103 through the cooperation of the second guide post 507 and the second guide groove 505.

[0034] When the telescopic drive motor 402 starts, it drives the telescopic lead screw 404 to rotate, causing the telescopic nut 405 to move horizontally. This movement forces the second guide post 507 at the other end of the second swing arm 503 to slide in the second guide groove 505, thereby causing the entire telescopic linkage assembly 501 to expand or contract. Similarly, under the drive of the second swing arm 503, the first guide post 506 at the other end of the first swing arm 502 slides in the first guide groove 504.

[0035] The expansion or contraction of the telescopic linkage component 501 will push the lumbar support component 301 at its upper end closer to or further away from the support base 103, thereby realizing the front and back adjustment of the lumbar support depth.

[0036] Furthermore, the lumbar support assembly 301 in this embodiment is a three-section structure, including a central lumbar support body 302 and two side pads 303 respectively connected to its two sides. The lumbar support body 302 and the side pads 303 are connected by a hinge assembly 304. The hinge assembly 304 includes a first connecting post 305 and a second connecting post 306. The first connecting post 305 has a rotating groove, and the sidewall of the rotating groove is provided with a rack-shaped or wave-shaped arc structure 308. The second connecting post 306 is axially connected to an elastic element 307, which is configured such that one side of the elastic element 307 is embedded in the arc-shaped structure 308 to achieve suspension of the rotation angle of the side pad 303. Preferably, the elastic element 307 and the second connecting post 306 are integrally formed.

[0037] Its working principle is as follows: the side pad 303 and the lumbar support body 302 are connected by a hinge assembly 304, which has a damping or segmented hovering function.

[0038] When the user manually moves the side pad 303, the elastic element 307 bounces in the groove of the rack-shaped or wave-shaped arc structure 308, producing a clicking sensation. When the user stops moving the elastic element, it gets stuck in the nearest trough or groove, using the elastic force and friction between the groove wall to achieve a stop at the rotation angle.

[0039] This allows users to adjust the two side pads 303 inward to the angle that best fits their waist, creating a personalized wraparound support, according to their body shape.

[0040] In summary, this invention achieves three-dimensional adjustment capabilities in height, depth, and width through two-dimensional electric adjustment (height and depth, forward and backward extension) and passive adjustment (rotation of the side wrap angles). This allows it to perfectly conform to the back curves of users of different heights and body types, providing a personalized comfort experience unmatched by traditional two-dimensional lumbar supports.

[0041] Provides excellent lateral support and a hugging feel: The hugging support provided by this embodiment of the invention can effectively wrap and support the muscles on both sides of the user's waist, providing excellent lateral stability when the vehicle is turning or the body is moving, and greatly relieving fatigue during long-distance driving.

[0042] Stable and reliable adjustment, ingenious structure: The lifting mechanism uses a lead screw and guide column to ensure smooth and wobbly vertical movement; the telescopic drive component 401 adopts an X-type scissor linkage component, which is structurally stable and can smoothly adjust the depth under heavy load (pressure on the human back). The segmented hinge structure of the side pad 303 is simple and reliable, allowing the user to clearly feel the adjustment and ensuring that the angle is fixed and does not slip.

[0043] Modular design, easy to integrate: The entire lumbar support structure is compact and can be integrated as a complete module into the backrest frame of various car seats or office chairs, making it highly versatile.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A supportive seat lumbar support structure, characterized in that, The support type seat waist support structure comprises a waist support base, a lifting driving mechanism arranged on the waist support base, a support base slidingly arranged on the waist support base and drivingly connected with the lifting driving mechanism, a support telescopic mechanism arranged on the support base, and a waist support assembly arranged on an output end of the support telescopic mechanism. The lifting driving mechanism is configured to drive the support base to ascend and descend along the waist support base, and the support telescopic mechanism is configured to drive the waist support assembly to approach or move away from the support base.

2. The support-type seat waist rest structure according to claim 1, wherein The waist support assembly comprises a waist support body and side pad portions respectively rotationally connected to two sides of the waist support body in a damping or segmented manner.

3. The support-type seat waist rest structure according to claim 2, wherein The waist support body and the side pad portions are connected through a hinge assembly. The hinge assembly comprises a first connecting column and a second connecting column. The first connecting column is provided with a rotating groove.

4. The support-type seat waist rest structure according to claim 3, wherein The sidewall of the rotating groove is provided with a rack-shaped or wavy arc structure.

5. The support-type seat waist rest structure according to claim 1, wherein The second connecting column is axially connected with an elastic member.

6. The support-type seat waist rest structure according to claim 5, wherein One side of the elastic member is embedded in the rack or wavy structure to realize hovering of a rotation angle of the side pad portion.

7. The support-type seat waist rest structure according to claim 5, wherein The elastic member and the second connecting column are integrally formed. The support telescopic mechanism comprises a telescopic driving assembly arranged on the support base and a telescopic linkage assembly. The telescopic driving assembly drives the waist support assembly to approach or move away from the support base through the telescopic linkage assembly.

8. The support-type seat waist rest structure according to claim 7, wherein The telescopic driving assembly comprises a telescopic driving motor, a telescopic transmission gear box, a telescopic screw rod, and a telescopic nut. The output end of the telescopic driving motor is drivingly connected with the telescopic screw rod through the telescopic transmission gear box.

9. The support-type seat waist rest structure according to claim 1, wherein The telescopic nut is screwed on the telescopic screw rod and connected with an input end of the telescopic linkage assembly. The telescopic linkage assembly comprises a first swing arm and a second swing arm.

10. A seat, characterized by One end of the first swing arm is rotationally connected with the support base. The other end of the first swing arm is rotationally and slidingly connected with the waist support assembly. The other end of the second swing arm is slidingly connected with the support base and rotationally connected with an output end of the telescopic driving assembly. The first swing arm and the second swing arm are rotationally connected at the intersection thereof. The waist support assembly is provided with a first guide groove. The support base is provided with a second guide groove. The other end of the first swing arm is rotationally connected with a first guide column. The other end of the second swing arm is rotationally connected with a second guide column. The other end of the first swing arm is rotationally and slidingly connected with the waist support assembly through cooperation of the first guide column and the first guide groove. The other end of the second swing arm is rotationally and slidingly connected with the support base through cooperation of the second guide column and the second guide groove. The lifting driving mechanism comprises a lifting driving motor, a lifting transmission gear box, a lifting screw rod, and a lifting nut. The output end of the lifting driving motor is drivingly connected with the lifting screw rod through the lifting transmission gear box. The lifting nut is screwed on the lifting screw rod and fixedly connected with the support base. The waist support base is further connected with a lifting guide column parallel to the lifting direction of the support base. The support type seat waist support structure is arranged in the seat. The seat is provided with the support type seat waist support structure.

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