A self-hugging seat

Abstract

The application discloses an automatic waist-holding seat which is capable of changing the position of a chain link through a waist-holding mechanism, and automatically shaping the back of a human body through a curved surface of an elastic member II assembly, and exerting elastic force, so as to effectively change the experience of use and improve the comfort during use. The automatic waist-holding seat is suitable for various chairs for home and office, and is also suitable for sofas and seats on vehicles.

Description

Technical Field

[0001] This application relates to the field of seating technology, and in particular to home chairs, office chairs, sofas, and vehicle seats. Background Technology

[0002] In daily life, when users sit or lie down, their body weight is distributed across their hips, waist, and back. These areas bear pressure, and when this pressure is sustained for a long time, the hips may become numb, the waist may experience increased strain on the intervertebral discs and muscles, and the back muscles may become tense, leading to various physical discomforts.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] Therefore, it is necessary to provide an automatic lumbar support seat to address the problems caused by current seating. This seat includes: a backrest, a lumbar support, and a cushion. The backrest is constructed from three interconnected frames: frame one, frame two, and frame three. The lumbar support has an automatic lumbar support function. The cushion withstands the elastic force of a flat surface.

[0005] In one embodiment, the chair legs are equipped with casters, the chair legs are connected to a gas spring, and the gas spring is connected to a chassis.

[0006] In one embodiment, the chassis is connected to the chassis support, and the base plate is connected to the chassis. A fixing beam is fixedly connected to the chassis support and the base plate.

[0007] In one embodiment, a base plate is attached to the chassis.

[0008] In one embodiment, one end of frame one and one end of frame two are connected to the fixed beam, and the other end of frame one and the other end of frame two are connected to frame three. Frame one, frame two, and frame three together form a chair back.

[0009] In one embodiment, the fixing seat has through holes and limiting surfaces, and is fixedly connected to the first frame and the second frame, respectively.

[0010] In one embodiment, the crossbeam is provided with guide seats, guide holes, connectors, and rotating surfaces. There are two guide seats, designated as guide seat one and guide seat two. There are two guide holes, designated as guide hole one and guide hole two. Two connectors are respectively located at both ends of the crossbeam. The connectors at both ends of the crossbeam are rotatably connected to the through holes of the fixed seats connected to the frame one and the frame two, respectively. The crossbeam rotates along the fixed seats, and when the rotating surface of the crossbeam contacts the limiting surface of the fixed seats, the rotation of the crossbeam is restricted.

[0011] In one embodiment, the elastic element two is provided with the features of a support arm, a force-bearing arm, and a through hole.

[0012] In one embodiment, the second elastic element has a through hole that passes through the first frame and the second frame; the second elastic element passing through the first frame is designated as an elastic element assembly, and the second elastic element passing through the second frame is also designated as an elastic element assembly; the first frame is provided with a fixed platform feature, which is fixedly connected to the support arm of the second elastic element; the second frame is also provided with a fixed platform feature, which is also fixedly connected to the support arm of the second elastic element; the force-bearing arms of the second elastic element assembly passing through the first frame and the second frame are aligned and flatly distributed along the first frame and the second frame, and the force-bearing arms form the curved surface of the second elastic element assembly.

[0013] The number of fixed platforms provided on the first frame and the second frame is consistent with the number of elastic elements 2 that are threaded onto the first frame and the second frame.

[0014] In one embodiment, the second elastic element support arm is connected to a fixed platform. When the back of the human body presses against the second elastic element assembly, the second elastic element force-bearing arm bears the pressure from the back of the human body. The first or second frame supports the second elastic element from inside the through-hole of the second elastic element. The fixed platform, fixedly connected to the second elastic element support arm, is the force-bearing point of the second elastic element support arm, bearing the force transmitted from the second elastic element force-bearing arm and supporting the elastic force of the second elastic element, which is applied to the back of the human body from the curved surface of the second elastic element assembly. Based on the pressure of the back of the human body on the second elastic element force-bearing arm, the second elastic element force-bearing arm automatically shapes along the back of the human body.

[0015] In one embodiment, the top plate is provided with pin holes, guide posts, fixing posts, and elastic element seats. The top plate has two pin holes, respectively located on both sides. There are two guide posts, designated as guide post one and guide post two. Elastic element seats are respectively provided on guide post one and guide post two. The two guide posts ensure the top plate is oriented to the crossbeam, and the number of guide posts matches the number of crossbeam guide seats and guide holes. The guide posts are slidably connected to the guide holes, meaning guide post one passes through the crossbeam guide. The system includes a seat 1, a guide hole 1, a guide post 1 slidably connected to the guide hole 1, a guide post 2 passing through the crossbeam guide seat 2 and the guide hole 2, and slidably connected to the crossbeam guide hole 2. The top plate is on the crossbeam and can slide in and out, move linearly, and rotate with the crossbeam. There are four fixed posts, designated as fixed post 1, fixed post 2, fixed post 3, and fixed post 4. Fixed posts 1, 2, 3, and 4 are arranged in two rows and two columns on the top plate. One end of elastic element 3 and elastic element 4 is connected to the fixed post.

[0016] In one embodiment, one elastic element 5 passes through the top plate guide post 1, with one end connected to the top plate elastic element seat and the other end connected to the inner wall of the crossbeam guide hole 1; another elastic element 5 passes through the guide post 2, with one end connected to the top plate elastic element seat and the other end connected to the inner wall of the crossbeam guide hole 2. The number of elastic elements 5 matches the number of guide posts and guide seats. The elastic elements 5 are installed between the crossbeam and the top plate, and the elastic elements 5 provide elastic force to the top plate. When the waist of the human body presses against the top plate, it provides elastic cushioning, and when the waist of the human body does not press against the top plate, it restores the position of the top plate.

[0017] In one embodiment, the connecting plate has pin holes at both ends, and is a hinged connection fitting used in a hinged connection structure to be hinged to the shaft pin.

[0018] In one embodiment, the links can be expanded and there are multiple links, designated as link one, link two, link three, and link four, with link one having pin holes on both sides.

[0019] In one embodiment, the link two has pin holes on both sides.

[0020] In one embodiment, the link three has pin holes on both sides.

[0021] In one embodiment, the component features pin holes on both sides of the four links, and the number of links is not limited to four and can be expanded.

[0022] In one embodiment, a pivot pin is installed in the pin hole of the chain link, and a hinged connection fitting is used in a hinged connection structure to be hinged to the pin hole of the chain plate.

[0023] In one embodiment, a pin hole on one side of the top plate is fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to pin holes of a connecting plate; a pin hole on one side of the chain link is fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to pin holes of a connecting plate connected to the shaft pin on the top plate; one side of the top plate and the chain link are hinged to the connecting plate via a shaft pin.

[0024] In one embodiment, the pin hole on the other side of the top plate is also fixedly connected to the shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the link plate; the pin hole on one side of the chain link three is fixedly connected to the shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the link plate connected to the shaft pin on the other side of the top plate; the other side of the top plate and the chain link three are hinged to the link plate through the shaft pin.

[0025] In one embodiment, the pin hole on one side of link two is fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the connecting plate; the pin hole on the other side of link one is also fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the connecting plate connected to the shaft pin on one side of link two; link one and link two are hingedly connected by a shaft pin and a connecting plate, and the pin hole on the other side of link two is reserved for extending the next link; one side of the top plate is hingedly connected to link one, and link one and link two are hingedly connected, and the top plate, the shaft pin, the connecting plate, link one, and link two constitute a chain mechanism.

[0026] In one embodiment, the pin hole on one side of link four is fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the link plate; the pin hole on the other side of link three is also fixedly connected to a shaft pin, and the upper and lower ends of the shaft pin are respectively hinged to the pin holes of the link plate connected to the shaft pin on one side of link four; link three and link four are hingedly connected by a shaft pin and a link plate, and the pin hole on the other side of link four is reserved for extending the next link; the other side of the top plate is hingedly connected to link three, and link three and link four are hingedly connected, and the top plate, the shaft pin, the link plate, link three, and link four also form a chain mechanism.

[0027] In one embodiment, the top plate, link one, link two, link three, and link four are arranged to wrap around the waist of the human body from three sides: the back, left, and right.

[0028] In one embodiment, connecting block one has a shaft hole and a fixing post, and connecting block one is connected to a support column; connecting block two has a shaft hole, through which a rotating shaft passes and is rotatably connected to connecting block two, and connecting block two rotates around the rotating shaft; the rotating shaft also passes through the shaft hole of connecting block one and is fixedly connected to connecting block one; one end of elastic element seven is fixedly connected to connecting block two, and the other end is fixedly connected to the fixing post of connecting block one, and connecting block two is subjected to the elastic force of elastic element seven; on another support column, connecting block one, connecting block two, and rotating shaft are also connected in the same way, and connecting block two is subjected to the elastic force of elastic element seven.

[0029] In one embodiment, on one side of the top plate, one end of the elastic element three is connected to the fixed column one, and the other end of the elastic element three is fixedly connected to the connecting block two, and the connecting block two is subjected to the elastic force of the elastic element three.

[0030] In one embodiment, on one side of the top plate, one end of the elastic element four is connected to the fixed column two, and the other end of the elastic element four is also fixedly connected to the connecting block two, and the connecting block two is subjected to the elastic force of the elastic element four.

[0031] In one embodiment, on the other side of the top plate, one end of the elastic element three is connected to the fixed column three, and the other end of the elastic element three is fixedly connected to the connecting block two of the handrail on the other side.

[0032] In one embodiment, on the other side of the top plate, one end of the elastic element four is connected to the fixed column four, and the other end of the elastic element four is also fixedly connected to the connecting block two of the handrail on the other side; the number of elastic elements three and four matches the number of fixed columns.

[0033] In one embodiment, the two elastic elements three on both sides of the top plate are connected at one end to the fixing post one and the fixing post three respectively, and at the other end to the connecting block two. The fixing post one and the fixing post three are part features of the top plate, and the two sides of the top plate are subjected to the elastic force of the two elastic elements three.

[0034] In one embodiment, the two elastic elements four on both sides of the top plate are connected at one end to the fixed column two and the fixed column four respectively, and at the other end to the connecting block two on the other side of the handrail. The fixed column two and the fixed column four are part features of the top plate, and the two sides of the top plate are subjected to the elastic force of the two elastic elements four.

[0035] In one embodiment, when the elastic element seven is not applying force to the lumbar pillow on the human waist, the elastic element seven applies an elastic force to the connecting block two, causing the elastic elements three and four connected to the connecting block two to slide forward on the crossbeam, and then causing the top plate connected to one end of the elastic elements three and four to remain in a position where the connecting block two does not rotate; the common force point of the connection point between one end of the elastic elements three and four and the connecting block two is designated as point A; the common force point of the connection between the other end of the elastic elements three and four and the fixed column of the top plate is designated as point B; the central plane perpendicular to and passing through the midpoint of the top plate is designated as C; and the angle between the line connecting points A and B and the central plane C is designated as X.

[0036] In one embodiment, the lumbar pillow has a component feature with four vibrator holes for mounting a vibrator. The lumbar pillow is made of an elastic, deformable material and is attached to the top plate, link one, link two, link three, and link four, allowing it to wrap around the back, left, and right sides of the human body.

[0037] In one embodiment, on one side of the top plate, one end of elastic element three and elastic element four are respectively fixed to a fixing post on the top plate, and the middle portion surrounds the outer contour of link one and link two. The other end of elastic element three and elastic element four is connected to connecting block two. On the other side of the top plate, one end of elastic element three and elastic element four are respectively fixed to a fixing post on the other side of the top plate, and the middle portion surrounds the outer contour of link three and link four. The other end of elastic element three and elastic element four is connected to connecting block two on the other side of the armrest. Elastic element three and elastic element four apply elastic force from both sides of the top plate, around the outer contour of link one, link two, link three, and link four, and apply elastic force to the top plate from the fixing posts on both sides of the top plate where one end of elastic element three and elastic element four is fixed. When the lumbar support is pressed against the human waist, the lumbar support is subjected to the force applied by the human waist. The lumbar support is made of elastic and deformable material and is attached to the top plate, the lumbar support, and the lumbar support. The lumbar support transmits the force applied by the human waist to the top plate, the lumbar support, the lumbar support, and the crossbeam. The top plate and the crossbeam are slidably connected and can slide and extend on the crossbeam. After the top plate is subjected to the force of the human waist transmitted by the lumbar support, it slides backward and pulls the elastic elements three and four fixedly connected to the top plate. The top plate is subjected to the elastic force of the elastic elements three and four and changes the position of the common force point B where one end of the elastic elements three and four is connected to the fixed column of the top plate. The position of point B moves backward and is relatively far away from the central plane C.Simultaneously, the backward sliding movement of the top plate on the crossbeam pulls the elastic elements three and four, which in turn pull the connecting block two. The force applied by the waist is greater than the elastic force applied by the elastic element seven to the connecting block two. The connecting block two overcomes the elastic force of the elastic element seven and rotates around the rotation axis. The position of point A, the common force point connecting the other ends of the elastic elements three and four to the connecting block two, is also changed. The position of point A is relatively closer to the central plane C. By changing the position of the points forming a straight line, the angle X of the straight line relative to the central plane C is changed. The angle X between the line connecting points A and B and the central plane C becomes smaller. As the angle X decreases, the elastic elements three and four move along the chain link one, chain link two, chain link three, and chain link four. The central portion, surrounded by four outer contours, compresses links one, two, three, and four, applying elastic force to them. Links one, two, three, and four are hinged to both sides of the top plate. Under the elastic force applied by elastic elements three and four, links one, two, three, and four rotate around the hinge pin, shaping along the human waist. This compression from the back, left, and right sides of the waist pillow causes it to conform to the curve of the waist, providing three-sided compression and support, thus achieving an automatic waist-hugging process.

[0038] In one embodiment, the top plate is subjected to a force applied by the waist of the human body, the guide post slides along the guide opening, and the top plate moves backward on the crossbeam; one end of the elastic element is connected to the elastic element seat, and the other end is connected to the inner wall of the guide hole. The backward movement of the top plate on the crossbeam compresses the elastic element, and the elastic element applies an elastic force to the top plate in the opposite direction to buffer the force applied by the waist of the human body to the top plate.

[0039] In one embodiment, the height of the top plate on the seat differs depending on the waist position of the human body. When the waist rests against the top plate, the top plate slides backward on the crossbeam. Simultaneously, the crossbeam rotates in the direction of the force applied to the top plate by the waist. The connectors at both ends of the crossbeam rotate within the through holes of the fixed seat, adjusting the angle of the top plate to accommodate the direction of the waist. When the rotating surface of the crossbeam contacts the limiting surface of the fixed seat, the rotation of the crossbeam is restricted.

[0040] In one embodiment, when the human waist leaves the lumbar pillow, the lumbar pillow is not subjected to force from the human waist. Elastic element five applies elastic force to the elastic element seat of the top plate, and elastic elements three and four, one end of which is fixed to the top plate fixing post, also apply elastic force to the top plate. The top plate guide post slides forward along the guide hole of the crossbeam, and the top plate moves forward. The position of point B, the common force point where one end of elastic elements three and four connects to the top plate fixing post, moves relatively closer to the central plane C. Simultaneously, the top plate no longer pulls on elastic elements three and four, nor does it pull on the connecting plate two. Elastic element seven pulls the connecting plate two to rotate along the rotation axis. The position of point A, the common force point where the other end of elastic elements three and four connects to the connecting block two, moves relatively away from the central plane C. By changing the position of the points forming a straight line, the angle X of the straight line relative to the central plane is changed. The line connecting points A and B and the central plane... As the included angle X of plane C increases, the middle portion of elastic elements three and four, which surround the outer contours of links one, two, three, and four, no longer compresses the outer contours of links one, two, three, and four. The elasticity of the lumbar pillow returns to its original state. During the forward movement of the top plate, links one, two, three, and four rotate along the hinge pin, returning to their original state. Elastic element seven pulls the connecting plate two to rotate back to its original position. The rotation angles of the top plate, elastic element five, and crossbeam all return to their original state after the force applied to the waist of the human body disappears.

[0041] In one embodiment, the fixing block has the characteristics of a bayonet and a threaded hole. The fixing block is fixedly connected to the base plate, and there are multiple fixing blocks distributed around the base plate.

[0042] In one embodiment, the support frame has a component feature of having multiple through holes. The support frame is installed on the fixing block slot. A screw passes through the through holes of the support frame and is threadedly connected to the threaded hole of the fixing block to fix the support frame on the fixing block. The shape of the support frame is not limited to circular or square, but can also be irregular.

[0043] In one embodiment, the retaining ring is fixedly connected to the base plate, the fixing block is encircled within the retaining ring, and the retaining ring abuts against the support arm of the elastic member.

[0044] In one embodiment, the elastic element 1 is provided with the characteristics of a support arm, a force-bearing arm, a through hole, and a flat end; the flat end is disposed on the force-bearing arm; the through hole of the elastic element 1 passes through the support frame, and the elastic element 1 is distributed along the support frame; the elastic element 1 distributed on the support frame is set as an elastic element 1 assembly; the flat ends of each elastic element 1 in the elastic element 1 assembly are flush, so that the elastic force of the elastic element 1 assembly is applied to this plane, and a gap is left in the middle of each of the flat ends, which is also distributed along the support frame. The gaps between each of the flat ends form a hole-like cavity, including a round hole, a square hole, or an irregular hole, which is a projection of the shape of the support frame.

[0045] In one embodiment, the seat panel has a fixed seat feature, which is installed in a cavity formed by the gaps between the planar ends of each of the elastic elements. The planar ends of the elastic elements abut against the bottom of the seat panel, supporting the seat panel. The planar surface of the elastic element assembly supports the seat panel around the seat panel fixed seat and bears the elastic force of the planar surface of the planar end of the elastic element assembly. The seat panel then transmits the planar elastic force to the cushion, and the cushion bears the elastic force of the planar surface of the planar end of the elastic element assembly.

[0046] In one embodiment, the retaining ring is attached to the elastic element support arm, and the retaining ring restricts the elastic element support arm from tilting and swaying. When a person sits on the seat board and pressure is applied to the elastic element assembly, the elastic element force-bearing arm bears the pressure of the seat board. The support frame supports the elastic element from inside the through hole of the elastic element and abuts against the retaining ring of the elastic element support arm. It is the force-bearing point of the elastic element support arm and resists the pressure borne by the elastic element force-bearing arm, so that the elastic force of the elastic element is applied to the seat board from the elastic element force-bearing arm.

[0047] In one embodiment, the cushion is provided with a vibrator hole and is fixedly attached to the seat plate.

[0048] In one embodiment, the motor has a motor shaft, the eccentric wheel has an eccentric hole, and the housing has an end cap. The eccentric hole of the eccentric wheel is fixedly connected to the motor shaft. The motor and the eccentric wheel are installed in the housing. After the end cap covers the housing, it seals the motor and eccentric wheel installed inside the housing. The motor, the eccentric wheel, and the housing constitute a vibrator.

[0049] In one embodiment, the vibrator is placed in a cloth cover, which is placed in the vibrator hole of the lumbar pillow and extends into the interior of the lumbar pillow through the vibrator hole.

[0050] In one embodiment, the vibrator is placed in a cloth cover, which is placed in the hole of the cushion vibrator and extends into the interior of the cushion through the hole.

[0051] In one embodiment, the battery has a socket and is fixedly connected to the support; the wire has a plug and is connected to the battery socket, the wire is connected to the motor of the vibrator, and the motor is powered through the battery and the wire.

[0052] In one embodiment, the retaining ring, fixing block, support frame, screw, seat plate, soft cushion, cloth cover, vibrator, and elastic element are assembled to form a seat mechanism; In one embodiment, the connecting plate 2, rotating shaft, elastic element 7, top plate, chain link 1, chain link 2, chain link 3, chain link 4, connecting plate, shaft pin, lumbar pillow, vibrator, cloth cover, elastic element 3, elastic element 4, elastic element 5, crossbeam, and fixed seat constitute the waist-hugging mechanism.

[0053] In one embodiment, the first frame, the second frame, the third frame, the second elastic component, and the chassis support constitute a back elastic mechanism.

[0054] In one embodiment, the first frame, the second frame section, the chassis support, the seat mechanism, the lumbar support mechanism, and the sofa base frame constitute a second type of automatic lumbar support seat, which is applied to sofas and other seating furniture.

[0055] In one embodiment, the backrest elastic mechanism, the lumbar support mechanism, the seat mechanism, the chassis bracket, and the vehicle seat frame constitute a third type of automatic lumbar support seat, which is applied to a vehicle seat.

[0056] The aforementioned automatic lumbar support seat provides a multi-faceted experience through its seat mechanism (offering both elasticity and vibration), lumbar support mechanism (providing three-sided automatic lumbar support and vibration), and back support mechanism (providing elastic support for the back). Unlike traditional seats, this one molds to the human waistline, conforming to its curves with three-sided lumbar support. The seat panel provides surface-level elasticity, while the elastic element automatically molds to the back, conforming to its curves and applying elasticity, offering a comprehensive functional experience and relieving fatigue from prolonged sitting. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort. An automatic lumbar support seat, according to structural variations, is divided into a first type of automatic lumbar support seat, a second type of automatic lumbar support seat, and a third type of automatic lumbar support seat for explanation.

[0058] Figure 1 This is a schematic diagram of the structure of the first type of automatic waist-hugging seat provided in the embodiments of this application.

[0059] Figure 2 An exploded view of the first type of automatic waist-hugging seat provided in the embodiments of this application.

[0060] Figure 3 A side view structural diagram of the first type of automatic waist-hugging seat provided in the embodiments of this application.

[0061] Figure 4 for Figure 3 Detail A: Structural diagram; Detail C: Half-section view; Detail D: Partial section view.

[0062] Figure 5 The diagram shows an exploded view and a schematic diagram of the waist-hugging mechanism provided in the embodiments of this application.

[0063] Figure 6 Provided for the embodiments of this application Figure 5 Detailed structural diagram of B.

[0064] Figure 7 The following are exploded views and structural schematic diagrams of the base plate and seat mechanism provided in the embodiments of this application.

[0065] Figure 8 Provided for the embodiments of this application Figure 1 Detail F: Structural schematic diagram and partial exploded view.

[0066] Figure 9 This is an assembly and exploded view of the vibrator provided in an embodiment of this application.

[0067] Figure 10 This is a schematic diagram showing the disassembled and assembled structure of the second type of automatic lumbar support seat provided in the embodiments of this application.

[0068] Figure 11 This is a structural schematic diagram of the third type of automatic waist-hugging seat provided in the embodiments of this application.

[0069] The following table explains the reference numerals in the attached figures. The numerals without decimal points are the component designations; the numerals with decimal points are the features of the component represented by the number before the decimal point; when multiple numerals are stacked together, it indicates that the components or features with those numerals have a matching relationship. Detailed Implementation

[0070] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0071] It should be noted that when an element is referred to as "fixing" another element, it can be directly on the other element or may exist within the element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or may exist simultaneously with the element. The terms "front," "back," "inner," "outer," "left," "right," "upper," "lower," "middle," "bottom," "straight line," "linear," "horizontal," "vertical," "clockwise," "counterclockwise," "high," "low," "large," "small," "overlap," "midpoint," "center," "equal to," "centered," "interference fit," "transition fit," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. For ease of description, the upper edge of the figure is "up," and the lower edge is "lower"; the rotation direction of the illustrated structure is determined by facing the front of the illustrated structure to determine whether it is clockwise or counterclockwise. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The capital numbers following the names of the components (parts) listed herein generally indicate the type or quantity of that component (part); the capital numbers following the feature names of the components (parts) listed herein also generally indicate the type or quantity of that feature, unless otherwise specified, such as "elastic element one" indicating that there is one type of elastic element or one quantity; "guide hole one" indicating that there is one type of guide hole or one quantity of guide hole features. The embodiments listed in this invention can be implemented in various other ways, and various omissions, substitutions, changes, and additions can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of this invention, and similarly included within the scope of the invention described in the claims and its equivalents.

[0072] Please see Figure 1 This application provides an automatic lumbar support seat, which can be a sofa, chair, or seat in various vehicles, etc., for supporting the waist and back of the human body.

[0073] The direction shown in the embodiments of this application is the direction in which a person is sitting on the seat.

[0074] The structure of the first type of automatic lumbar support seat 600 provided in the embodiments of this application will be described in detail below: Please see Figure 1 , Figure 2 , Figure 1 This is a schematic diagram of the structure of the first type of automatic lumbar support seat 600 provided in this application embodiment. The chair legs 2 are equipped with casters 1, and are connected to a gas spring 3. The gas spring 3 is connected to a chassis 4, which is connected to a chassis support 5. A base plate 40 is connected to the chassis 4. A fixing beam 6 is fixedly connected to the chassis support 5 and the base plate 40. The base plate 40 is connected to the chassis 4. One end of frame one 11 and one end of frame two 12 are connected to the fixing beam 6, and the other ends of frame one 11 and frame two 12 are connected to frame three 13. Frame one 11, frame two 12, and frame 13 form the chair back. Fixed seats 14 are fixedly connected to frame one 11 and frame two 12 respectively.

[0075] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 .

[0076] The connectors 10.5 at both ends of the crossbeam 10 are rotatably connected to the through holes 14.1 of the fixing seats 14 respectively provided on the first frame 11 and the second frame 12. When the crossbeam 10 rotates within the through holes 14.1 of the fixing seats, the rotation of the crossbeam 10 is limited when the rotating position 10.6 of the crossbeam touches the limiting surface 14.2 of the fixing seat, and the rotation of the crossbeam 10 is limited, and it can only rotate in the opposite direction. The elastic element 58 is respectively sleeved on the top plate guide post 30.2 and guide post 30.8. Top plate guide posts 1 (30.2) and 2 (30.8) pass through guide holes 1 (10.3) and 2 (10.4) of the crossbeam, respectively. Top plate guide posts 1 (30.2) and 2 (30.8) are slidably connected to guide holes 1 (10.3) and 2 (10.4) along guide seats 1 (10.1) and 2 (10.2) of the crossbeam, respectively. Top plate 30 slides and extends along the guide holes of crossbeam 10. Elastic element 58 rests on top plate elastic element seat 30.7 at one end and abuts against the inner wall of the guide hole of crossbeam 10 at the other end. Shaft pins 35 are fixedly connected to pin holes 30.1 in top plate, 31.1 in chain link 1, 32.1 in chain link 2, 53.1 in chain link 3, and 54.1 in chain link 4, respectively. The pin hole 33.1 in the connecting plate is hinged to the shaft pins 35. The chain mechanism consists of pin 30.1 on one side of the top plate, pin 35, connecting plate 33, link 1 31, and link 2 32. The chain mechanism also consists of pin 30.1 on the other side of the top plate, pin 35, connecting plate 33, link 3 53, and link 4 54. The chain mechanisms on both sides of the top plate 30 are arranged to encircle the waist of the human body from the back, left, and right sides. The chain mechanisms on both sides of the top plate 30 can be extended in number of links and lengthened as needed.

[0077] Please see Figure 6 .

[0078] One end of elastic element 38 and elastic element 49 are respectively fixedly connected to the fixed post of the top plate 30. One end of elastic element 38 is connected to fixed post 30.3, passing around the outer contour of link 53 and link 4, and the other end is fixedly connected to connecting block 22. One end of another elastic element 38 is connected to fixed post 30.5, passing around the outer contour of link 31 and link 22, and the other end of this elastic element 38 is fixedly connected to another connecting block 22. One end of elastic element 39 is connected to fixed post 30.4, passing around the outer contour of link 53 and link 454, and the other end is fixedly connected to connecting block 22. One end of another elastic element 39 is connected to fixed post 40.6, passing around the outer contour of link 31 and link 232, and the other end of this elastic element 39 is fixedly connected to another connecting block 22. Fixed posts 1 (30.3), 2 (30.4), 3 (30.5), and 4 (30.6) form a surface, and the elastic forces of elastic elements 3 (38) and 4 (39) are applied to this surface. Connecting block 1 (21) is fixedly connected to the support column 26, and rotating shaft 23 is fixedly connected to the shaft hole 21.1 of connecting block 1. Connecting block 2 (22.1) is rotatably connected to rotating shaft 23, and connecting block 2 (22) rotates around rotating shaft 23. Elastic element 7 (24) is fixedly connected at one end to connecting block 1 (21) and at the other end to connecting block 2 (22). Lumbar pillow 36 is attached and fixed along the inner contour of top plate 30 and links 1 (31), 2 (32), 3 (53), and 4 (54). The following components—connecting plate 22, rotating shaft 23, elastic element 7 24, top plate 30, chain link 1 31, chain link 2 32, chain link 3 53, chain link 4 54, connecting plate 33, shaft pin 35, lumbar pillow 36, vibrator 303, cloth cover 60, elastic element 3 38, elastic element 4 39, elastic element 5 58, crossbeam 10, and fixed seat 14—form a lumbar support mechanism.

[0079] When the human waist is pressed against and squeezed by the lumbar pillow 36, the lumbar pillow 36 is subjected to the force applied by the human waist. The lumbar pillow is made of elastic and deformable material and is attached to the top plate 30, link 1 31, link 2 32, link 3 53, and link 4 54. The lumbar pillow 36 transmits the force applied by the human waist to the top plate 30, link 1 31, link 2 32, link 3 53, and link 4 54. The top plate 30 is slidably connected to the crossbeam 10 and can move linearly and telescopically on the crossbeam 10. After the top plate 30 is subjected to the force of the human waist transmitted by the lumbar pillow 36, it slides backward along the guide seat of the crossbeam 10, compressing the elastic element 58 to buffer the force applied by the human waist to the top plate and drive the crossbeam 10 to rotate around the fixed seat 14. The top plate 30 rotates with the crossbeam 10 and automatically adapts to the angle at which the top plate 30 is pressed against the human waist. The top plate 30 slides backward, changing the position of point B, the common force point connecting one end of elastic element 38 and elastic element 49 to the fixed column of the top plate 30. Point B moves backward, relatively away from the central plane C. The backward sliding of the top plate 30 on the crossbeam 10 pulls elastic elements 38 and 4, which in turn pulls connecting block 22. The force applied by the waist is greater than the elastic force applied by elastic element 7 24 to connecting block 22. Connecting block 22 overcomes the elastic force of elastic element 7 24 and rotates around the rotation axis 23. The position of point A, the common force point connecting the other end of elastic elements 38 and 4 39 to connecting block 22, is also changed, moving closer to the central plane C. The positions of point B on the other side of the top plate 30 and point A on the other connecting block 22 are also changed simultaneously. The points B on both sides of the top plate and the points A on the two connecting blocks 22 are symmetrical. The backward sliding movement of the top plate 30 on the crossbeam 10 increases the distance between points A and B, thereby increasing the elastic force between the elastic element 38 and the elastic element 39 connecting points A and B.

[0080] Changing the positions of the points forming a straight line changes the angle X of the line relative to the central plane C. Point B moves relatively away from the central plane C, while point A moves relatively closer to the central plane C. The angle X between the line connecting points A and B and the central plane C decreases. This decrease in angle X causes elastic elements 38 and 39 to compress the middle portion of the outer contours of links 11, 22, 33, and 44 along the chain links, increasing the elastic force applied to links 31, 22, 33, and 44. 4. The chain mechanism, which is hinged to both sides of the top plate 30, is subjected to increased elastic force from elastic element 38 and elastic element 49. As a result, chain links 1 31, 2 32, 3 53, and 4 54 rotate around the hinge pin 35, changing the position of the chain mechanism. It wraps around and approaches the waist of the human body, shaping it along the waist. It squeezes the lumbar pillow 36 from the back, left, and right sides of the waist, causing the lumbar pillow 36 to wrap around and approach the waist of the human body, shaping and elastically deforming it. It fits the contour curve of the waist from the back, left, and right sides, squeezing and hugging the waist from three sides, supporting the waist from three sides, thus achieving the process of automatically hugging the waist.

[0081] When the human waist moves away from the lumbar support 36, the lumbar support 36 is no longer subjected to the force of the human waist. Elastic element 58 applies elastic force to the elastic element seat of the top plate 30, and elastic elements 38 and 49, one end of which are fixed to the fixed column of the top plate 30, also apply elastic force to the top plate 30. The guide column of the top plate 30 slides forward along the guide hole of the crossbeam 10, and the top plate 30 moves forward. The position of point B, the common force point where one end of elastic elements 38 and 49 is connected to the fixed column of the top plate 30, moves forward and is relatively closer to the central plane C. While the top plate 30 moves forward, it no longer pulls elastic elements 38 and 49, and elastic elements 38 and 49 no longer pull the connecting plate 22. Elastic element 7 24 pulls the connecting plate 22 to rotate along the rotation axis 23. The position of point A, the common force point where the other end of elastic elements 38 and 49 is connected to the connecting block 22, moves away from the central plane C. The forward sliding movement of the top plate 30 on the crossbeam 10 reduces the distance between points A and B, thereby reducing the elastic force between the elastic element 38 and the elastic element 39 connecting points A and B.

[0082] Changing the positions of the points forming a straight line changes the angle X of the line relative to the central plane C. Point B is relatively closer to the central plane C, while point A is relatively farther away from the central plane C. The angle X between the line connecting points A and B and the central plane C increases. As the angle X increases, the elastic force compressing the outer contours of links 31, 32, 53, and 54 along the middle portions of elastic elements 38 and 39 (which surround the outer contours of links 31, 32, 53, and 54) decreases. The elastic force of the lumbar pillow 36, which is reduced by the elastic force of the elastic element 38 and the elastic element 4, is restored to its original state. This causes the chain links 311, 32, 53, and 54 to rotate in the opposite direction along the hinge pin 35, and the position of the chain mechanism is restored to its original state. The elastic element 7 24 pulls the connecting plate 22 to rotate in the opposite direction to its original position. The rotation angles of the top plate 30, the elastic element 58, and the crossbeam 10 are all restored to their original state after the force applied to the waist of the human body disappears.

[0083] The vibrator 303 consists of a housing 61, a motor 62, and an eccentric wheel 63, and is placed inside a cloth cover 60. The cloth cover 60, containing the vibrator 303, is placed in the vibrator holes 36.1 of the lumbar pillow. The lumbar pillow 36 has multiple vibrator holes 36.1, accommodating multiple vibrators 303. When the motor 62 is powered on, the eccentric wheel 63, mounted on the motor shaft 62.1, rotates. The eccentric rotation of the eccentric wheel 63 generates vibration, which drives the housing 61 to vibrate, transmitting this vibration to the cloth cover 60 and the lumbar pillow 36, providing vibration and pressure relief to the lower back. Please refer to [link / reference]. Figure 9 .

[0084] Please see Figure 7 .

[0085] A base plate 40 is connected to a chassis 4. Fixed blocks 42 are fixedly connected to the base plate 40, and are distributed around the perimeter of the base plate 40. Retaining rings 41 are fixedly connected to the base plate 40, encircling the fixed blocks 42. A support frame 43 is mounted on the fixed block retainer 42.1. An elastic element through hole 48.3 passes through the support frame, and an elastic element assembly 301 is distributed around the support frame. A screw 44 passes through the support frame through hole 43.1 and is threaded into the fixed block threaded hole 42.2, fixing the support frame 43 to the fixed block 42.

[0086] In the elastic component assembly 301, the planar ends 48.4 of each elastic element 48 are flush, forming a plane 301.2. The elastic force of the elastic component assembly 301 is applied to this plane, and gaps are left between each planar end 48.4, distributed along the support frame 43. These gaps form a cavity 301.1, which can be round, square, or irregular in shape, and is a projection of the support frame 43. The seat plate fixing base 45.1 is installed within the cavity 301.1 of the elastic component assembly. The plane 301.2 of the elastic component assembly 301 supports the bottom of the seat plate 45, supporting the seat plate 45 and bearing the elastic force of the plane 301.2 in the elastic component assembly. The cushion 46 is fixedly attached to the seat plate 45. The cushion 46 has multiple vibrator holes, and a cloth cover 60 containing a vibrator 303 is placed inside the vibrator holes 46.1. After the motor 62 is powered on, the eccentric wheel 63 mounted on the motor shaft 62.1 rotates. The vibration generated by the eccentric rotation of the eccentric wheel 63 drives the outer casing 61 to vibrate, which is then transmitted to the cloth cover 60 and the cushion 46, providing vibration and pressure relief to the human buttocks. Please refer to [link / reference]. Figure 9 .

[0087] The seat mechanism 310 consists of a retaining ring 41, a fixing block 42, a support frame 43, a screw 44, a seat plate 45, a soft cushion 46, a cloth cover 60, a vibrator 303, and an elastic component assembly 301. When a person sits on the cushion 46 with their buttocks, and the pressure is applied to the seat board 45, and the seat board 45 then presses the buttocks against the elastic component 301, the elastic component's first force-bearing arm 48.2 bears the pressure from the seat board 45, and the elastic component's first flat surface 301.2 bears the pressure from the seat board 45. The support frame 43 supports the elastic component 48 from inside the elastic component's first through hole 48.3, abuts against the retaining ring 42 of the elastic component's first support arm 48.1, and bears the pressure transmitted from the elastic component's first force-bearing arm 48.2 to the support arm, thus resisting the pressure borne by the elastic component's first force-bearing arm 48.2. This allows the elastic force of the elastic component 48 to be applied to the seat board 45 from the flat end 48.4 on the elastic component's first force-bearing arm 48.2. That is, the elastic force of the elastic component 301 supports the bottom of the seat board 45 from the flat surface 301.2, allowing the buttocks to feel the elastic force of the elastic component 301 and reducing the pressure on the buttocks.

[0088] Please see Figure 8 .

[0089] The frame 11, frame 2 12, frame 3 13, and elastic element 2 assembly 302 together form the back elastic mechanism. The through hole 18.3 of elastic element 2 passes through frame 11 and frame 2 12. The elastic element 2 assembly is distributed along frame 11 and frame 2 12. The support arm of elastic element 2 is fixedly connected to the fixing platform 11.1 of frame 1 and the fixing platform 12.1 of frame 2. The force-bearing arm 18.2 of the elastic element 2 assembly passing through frame 11 and the elastic element assembly passing through frame 2 12 is aligned and flatly distributed along frame 11 and frame 2 12. The force-bearing arm 18.2 forms a curved surface 302.1. When the back of the human body presses against the elastic component 2 302, the elastic component 2 force arm 18.2 bears the pressure of the human body's back. The first frame 11 and the second frame 12 support the elastic component 2 18 through the through hole 18.3 of the elastic component 2. The first frame fixing platform 11.1 and the second frame fixing platform 12.1, which are fixedly connected to the elastic component 2 support arm 18.1, are the force points of the elastic component 2 support arm 18.1, bearing the pressure transmitted from the elastic component 2 force arm 18.2 and supporting the elastic force of the elastic component 2 18. The elastic force is applied to the back of the human body from the curved surface 302.1 of the elastic component 2. When the back of the human body applies pressure to the curved surface of the elastic component 2, the elastic component 2 force arm 18.2 automatically shapes along the curve of the human body's back, applying the elastic force support of the curved surface 302.1 of the elastic component 2 to the back of the human body, providing a comfortable experience.

[0090] The battery 50 is fixedly connected to the support column 26. The power cord plug 51.1 is connected to the battery socket 50.1. The power cord 50 is connected to the motor 62 of the vibrator 303. The power supply of the motor 62 is provided through the battery 50 and the power cord 51.

[0091] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 .

[0092] In the second type of automatic lumbar support seat 601, the upper parts of frame one 11 and frame two 12 are cut off, and the backrest structure lacks frame three 13. The remaining parts of frame one 11 and frame two 12 serve as support members for the fixed seat 14 and the crossbeam 10, and the base plate 40 is fixedly connected to the fixed beam 6. The base plate 40 is fixedly connected to the sofa frame 71.

[0093] The second type of automatic lumbar support seat 601 consists of a sofa frame 71, a fixed beam 6, a first frame 11, a second frame 12, a base plate 40, a seat mechanism 310, and a lumbar support mechanism 320. When the human body's waist leans against and presses against the lumbar support 36, the lumbar support 36 receives the force applied by the human body's waist. The lumbar support 36 transmits the force applied by the human body's waist to the top plate 30, link one 31, link two 32, link three 53, and link four 54. After receiving the force from the human body's waist transmitted by the lumbar support 36, the top plate 30 slides backward along the guide seat of the crossbeam 10, compressing the elastic element five 58 to buffer the force applied by the human body's waist to the top plate, and driving the crossbeam 10 to rotate around the fixed seat 14, automatically adapting the angle between the top plate 30 and the human body's waist. The top plate 30 slides backward, changing the position of point B, the common force point connecting one end of elastic element 38 and elastic element 49 to the fixed column of the top plate 30, on one side of the top plate 30. Point B moves backward, relatively away from the central plane C, while point A moves relatively closer to the central plane C. The backward sliding movement of the top plate 30 on the crossbeam 10 increases the distance between points A and B, thus increasing the elastic force between elastic element 38 and elastic element 49 connecting points A and B.

[0094] Point B is relatively far from the central plane C, while point A is relatively close to the central plane C. The angle X between the line connecting points A and B and the central plane C decreases. This decrease in angle X causes elastic elements 38 and 39 to press against links 31, 32, 53, and 54 along the middle portion of the outer contours of links 31, 32, 53, and 54. This increases the elastic force applied to links 31, 32, 53, and 54. The chains 31, 32, 53, and 54 are hinged to each other on both sides of the top plate 30. After being subjected to the increased elastic force of elastic element 38 and elastic element 49, the chain mechanism rotates around the hinge pin 35, and the chain links 1 31, 2 32, 3 53, and 4 54 rotate. The position of the chain mechanism is changed, and it wraps around and moves closer to the waist of the human body, shaping it along the waist. It squeezes the lumbar pillow 36 from the back, left, and right sides of the waist, so that the lumbar pillow 36 wraps around and moves closer to the waist of the human body, shaping and elastically deforming it. From the back, left, and right sides of the waist, it fits the contour curve of the waist, squeezing and hugging the waist from three sides, supporting the waist from three sides, and realizing the process of automatically hugging the waist.

[0095] When the human waist moves away from the lumbar support 36, the lumbar support 36 is no longer subjected to the force of the human waist. Elastic element 58 applies elastic force to the elastic element seat of the top plate 30, and elastic elements 38 and 49, one end of which are fixed to the fixed column of the top plate 30, also apply elastic force to the top plate 30. The guide column of the top plate 30 slides forward along the guide hole of the crossbeam 10, and the top plate 30 moves forward. The position of point B, the common force point where one end of elastic elements 38 and 49 is connected to the fixed column of the top plate 30, moves forward and is relatively closer to the central plane C. While the top plate 30 moves forward, it no longer pulls elastic elements 38 and 49, and elastic elements 38 and 49 no longer pull the connecting plate 22. Elastic element 7 24 pulls the connecting plate 22 to rotate along the rotation axis 23. The position of point A, the common force point where the other end of elastic elements 38 and 49 is connected to the connecting block 22, moves away from the central plane C. The forward sliding movement of the top plate 30 on the crossbeam 10 reduces the distance between points A and B, thereby reducing the elastic force between the elastic element 38 and the elastic element 39 connecting points A and B.

[0096] Changing the position of the points forming a straight line changes the angle X of the line relative to the central plane C. Point B is relatively closer to the central plane C, while point A is relatively farther away from the central plane C. The angle X between the line connecting points A and B and the central plane C increases. As the angle X increases, the elastic force that compresses the outer contours of links 31, 32, 53, and 54 along the middle parts of elastic elements 38 and 39, which surround the outer contours of links 31, 32, 53, and 54, decreases.

[0097] The elastic force of the lumbar pillow 36, which is reduced by the elastic force of the elastic element 38 and the elastic element 4, is restored to its original state. This causes the chain links 311, 32, 53, and 54 to rotate in the opposite direction along the hinge pin 35, and the position of the chain mechanism is restored to its original state. The elastic element 7 24 pulls the connecting plate 22 to rotate in the opposite direction to its original position. The rotation angles of the top plate 30, the elastic element 58, and the crossbeam 10 are all restored to their original state after the force applied to the waist of the human body disappears.

[0098] The vibrator 303 consists of a housing 61, a motor 62, and an eccentric wheel 63, and is placed inside a cloth cover 60. The cloth cover 60, containing the vibrator 303, is placed in the vibrator holes 36.1 of the lumbar pillow. The lumbar pillow 36 has multiple vibrator holes 36.1, accommodating multiple vibrators 303. When the motor 62 is powered on, the eccentric wheel 63, mounted on the motor shaft 62.1, rotates. The eccentric rotation of the eccentric wheel 63 generates vibration, which drives the housing 61 to vibrate, transmitting this vibration to the cloth cover 60 and the lumbar pillow 36, providing vibration and pressure relief to the lower back. Please refer to [link / reference]. Figure 9 .

[0099] The seat mechanism 310 consists of a retaining ring 41, a fixing block 42, a support frame 43, a screw 44, a seat plate 45, a soft cushion 46, a cloth cover 60, a vibrator 303, and an elastic component assembly 301. When a person sits on the cushion 46 with their buttocks, and the pressure is applied to the seat board 45, and the seat board 45 then presses the buttocks against the elastic component 301, the elastic component's first force-bearing arm 48.2 bears the pressure from the seat board 45, and the elastic component's first flat surface 301.2 bears the pressure from the seat board 45. The support frame 43 supports the elastic component 48 from inside the elastic component's first through hole 48.3, abuts against the retaining ring 42 of the elastic component's first support arm 48.1, and bears the pressure transmitted from the elastic component's first force-bearing arm 48.2 to the support arm, thus resisting the pressure borne by the elastic component's first force-bearing arm 48.2. This allows the elastic force of the elastic component 48 to be applied to the seat board 45 from the flat end 48.4 on the elastic component's first force-bearing arm 48.2. That is, the elastic force of the elastic component 301 supports the bottom of the seat board 45 from the flat surface 301.2, allowing the buttocks to feel the elastic force of the elastic component 301 and reducing the pressure on the buttocks.

[0100] The battery 50 is fixedly connected to the support column 26. The power cord plug 51.1 is connected to the battery socket 50.1. The power cord 50 is connected to the motor 62 of the vibrator 303. The power supply of the motor 62 is provided through the battery 50 and the power cord 51.

[0101] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 11 .

[0102] In the third type of automatic lumbar support seat 602, the base plate 40 is fixedly connected to the fixed beam 6. The base plate 40 is fixedly connected to the vehicle seat frame 82.

[0103] The third type of automatic lumbar support seat 602 consists of a vehicle seat frame 82, a fixed beam 6, frame one 11, frame two 12, a base plate 40, a seat mechanism 310, a lumbar support mechanism 320, and a backrest elastic mechanism 330. Compared with the first type of automatic lumbar support seat, it does not have the structure of casters 1, chair legs 2, gas spring 3, chassis 4, and chassis bracket 5. When applied to a vehicle, the functions and roles of the seat mechanism 310, lumbar support mechanism 320, and backrest elastic mechanism 330 are the same as those of the first type of automatic lumbar support seat 600. The vibrator 303, which is covered in the cloth cover 60 and placed in the lumbar pillow 36 and soft cushion 46, also has the same function as the first type of automatic lumbar support seat 600.

[0104] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic lumbar support seat, characterized in that, It includes a chair back, a lumbar support, and a cushion. The chair back is composed of three connected frames: frame one, frame two, and frame three. The lumbar support has an automatic waist-hugging function. The cushion is designed to withstand the elastic force of a flat surface.

2. An automatic lumbar support seat, characterized in that, The fixed base has the characteristics of a through hole and a limiting surface, and is fixedly connected to the first frame and the second frame respectively, and is rotatably connected to the crossbeam.

3. An automatic lumbar support seat, characterized in that, The crossbeam is characterized by a guide seat, guide hole, connector, and rotating surface. The crossbeam connector is rotatably connected to the through hole of the fixed seat, and the rotation of the crossbeam is limited by the limiting surface of the fixed seat and the rotating surface of the crossbeam. The crossbeam is slidably connected to the top plate, and the top plate moves linearly along the crossbeam guide seat and rotates with the crossbeam. An elastic element is installed between the crossbeam and the top plate, providing elastic force to the top plate. When the waist of the human body presses against the top plate, it provides elastic cushioning, and when the waist of the human body does not press against the top plate, it restores the position of the top plate.

4. An automatic lumbar support seat, characterized in that, The top plate features pin holes, guide posts, fixing posts, and elastic element seats. The top plate guide posts are slidably connected to the guide holes of the crossbeam. The top plate moves linearly on the crossbeam and rotates with the crossbeam, automatically adapting to the angle when the waist of the human body presses against the top plate. The pin holes of the top plate are fixedly connected to a shaft pin. On one side of the top plate, the top plate, shaft pin, connecting plate, chain link one, and chain link two form a chain mechanism. On the other side of the top plate, the top plate, shaft pin, connecting plate, chain link three, and chain link four also form a chain mechanism. One end of elastic element three and elastic element four is connected to the fixing post of the top plate.

5. An automatic lumbar support seat, characterized in that, Connecting block one has the features of a shaft hole and a fixed post. The rotating shaft is fixedly connected to the shaft hole of connecting block one, and connecting block two is rotatably connected to the rotating shaft. One end of elastic element seven is fixedly connected to connecting block two, and the other end is fixedly connected to the fixed post of connecting block one. Connecting block two is subjected to the elastic force of elastic element seven. The other ends of elastic elements three and four are connected to connecting block two, and connecting block two is also subjected to the elastic force of elastic elements three and four.

6. An automatic lumbar support seat, characterized in that, One end of the elastic element three and the elastic element four is connected to the top plate fixing column, and the other end of the elastic element three and the elastic element four is connected to the connecting block two. The middle part of the elastic element three and the elastic element four surrounds the outer contour of the chain link one, the chain link two, the chain link three, and the chain link four.

7. An automatic lumbar support seat, characterized in that, After the position of the top plate is changed, the positions of points A and B in the line connecting points A and B are changed. By changing the positions of points A and B, the angle X between the line connecting points AB and the central plane C is changed. By changing the angle X, the position of the elastic element three and the elastic element four pressing on the chain mechanism is changed. At the same time, by changing the positions of points A and B, the distance between points A and B is changed, thereby changing the force of the elastic element three and the elastic element four pressing on the chain mechanism.

8. An automatic lumbar support seat, characterized in that, When the waist-hugging mechanism is close to the human body, it hugs the human body's waist from the back, left, and right sides, providing support for the human body's waist.

9. An automatic lumbar support seat, characterized in that, A fixing block and a retaining ring are fixedly connected to the base plate; the fixing block has the characteristics of a bayonet and a threaded hole; the support frame has the characteristics of a support frame with multiple through holes. The support frame is installed on the bayonet of the fixing block, and a screw passes through the through hole of the support frame and is threadedly connected to the threaded hole of the fixing block to fix the support frame on the fixing block; the retaining ring encloses the fixing block inside the retaining ring, and the retaining ring abuts against the support arm of the elastic element one, restricting the upward tilting and swaying of the support arm of the elastic element one.

10. An automatic lumbar support seat, characterized in that, The elastic element is characterized by a support arm, a force-bearing arm, a through hole, and a flat end. The through hole of the elastic element passes through the support frame, and the elastic elements are distributed along the support frame. The elastic elements distributed on the support frame constitute an elastic element assembly. The flat ends of each elastic element in the elastic element assembly are flush, forming a plane of the elastic element assembly, so that the elastic force of the elastic element assembly is applied to this plane. A gap is left between the flat ends of each elastic element, which is also distributed along the support frame. The gaps between the flat ends of each elastic element form a hole-like cavity, forming the cavity of the elastic element assembly. The shape of the cavity includes a round hole, a square hole, or an irregular shape, which is a projection of the shape of the support frame.

11. An automatic lumbar support seat, characterized in that, The seat panel has a fixed seat feature; the seat panel fixed seat is placed in the cavity of the elastic element component; the flat end of the elastic element supports the seat panel, the flat surface of the elastic element component supports the seat panel around the seat panel fixed seat, and the seat panel bears the planar elastic force of the flat surface of the elastic element component.

12. An automatic lumbar support seat, characterized in that, The cushion is fixedly attached to the seat board, and the cushion bears the planar elastic force of the elastic element.

13. An automatic lumbar support seat, characterized in that, The elastic element two is characterized by a support arm, a force-bearing arm, and a through hole; the frame one is characterized by a fixed platform, and the frame two is also characterized by a fixed platform; the through hole of the elastic element two passes through the frame one and the frame two, and the support arm of the elastic element two is fixedly connected to the fixed platforms of the frame one and the frame two; the elastic element two passing through the frame one and the frame two is an elastic element two assembly; the force-bearing arm of the elastic element two assembly passing through the frame one and the elastic element two assembly passing through the frame two is aligned and evenly distributed along the frame one and the frame two, forming the curved surface of the elastic element two assembly; when pressure is applied to the curved surface of the elastic element two assembly on the back of the human body, the force-bearing arm 18.2 of the elastic element two automatically shapes along the curve of the back of the human body, applying elastic support to the curved surface of the elastic element two assembly to provide a comfortable experience.

14. An automatic lumbar support seat, characterized in that, The motor has a motor shaft, the eccentric wheel has an eccentric hole, and the housing has an end cap. The eccentric hole of the eccentric wheel is fixedly connected to the motor shaft. The motor and the eccentric wheel are installed in the housing. After the end cap covers the housing, it seals the motor and the eccentric wheel installed in the housing. The motor, the eccentric wheel, and the housing constitute a vibrator. The vibrator is placed in the vibrator hole of the soft pad and the vibrator hole of the lumbar pillow.

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