Sitting posture correcting mechanism and seat

Abstract

According to the sitting posture correcting mechanism and the seat, when the sitting posture correcting mechanism is used, the correcting units are arranged on one side or two sides of the cushion, and the first section of the supporting piece is rotationally installed on the seat body, so that when the first section rotates around the axis of the seat body, the second section rotates around the axis of the first section with the preset distance as the radius, and the sitting posture correcting mechanism is used for correcting the sitting posture. The connecting part is simultaneously connected to the second sections of the at least two supporting pieces, the connected supporting pieces rotate synchronously, and all the second sections on the same side also revolve around the corresponding first sections synchronously, so that all the second sections on the same side are changed along the transverse position, namely, the distance between the second sections and the upper body of the user is adjustable; in this way, the second section can play a role in limiting the lateral direction of the user, and the problem of lateral inclination of the upper body of the user is corrected.

Description

Technical Field

[0001] This application relates to the field of seating technology, specifically to a posture correction mechanism and seating. Background Technology

[0002] Poor posture in teenagers can lead to problems such as hunchback, scoliosis, cervical spondylosis, myopia, strabismus, and compression of the chest and abdomen, seriously affecting their health. Therefore, some chairs are equipped with corrective mechanisms to restrict the user's posture.

[0003] Currently, posture correction mechanisms for chairs mainly focus on restricting the user's forward posture, such as installing a table or crossbar in front of the chair to limit the user's forward movement. While this can restrict the user's forward posture to some extent, existing posture correction chairs cannot solve the problem of lateral support and restraint for teenagers, nor can they be adjusted according to individual differences among teenagers. This results in poor fit between the chair and the user, and the posture correction mechanism may not be effective. Summary of the Invention

[0004] The purpose of this application is to provide a posture correction mechanism and a seat that can provide good lateral support and limit the user's body tilting.

[0005] This application provides a posture correction mechanism, including at least one correction unit. The correction unit includes at least two support members arranged in a front-back direction. Each support member includes a first segment and a second segment in the height direction. The axis of the second segment is parallel to the axis of the first segment and is staggered in a first plane so that the second segment can revolve around the axis of the first segment. The distance between the axes of the first segment and the axes of the second segment of each support member in the same correction unit is equal. The axes of the second segments of all support members in the same correction unit are located in a second plane, and the axes of all the first segments are located in a third plane. The second plane and the third plane are parallel or coincident. The correction unit further includes a connecting component that connects the second segments of at least two of the supports so that all the connected supports in the same correction unit rotate synchronously; wherein the first plane is perpendicular to the axis of the first segment.

[0006] When the posture correction mechanism is in use, a correction unit is provided on one or both sides of the seat cushion. The first section of the support is rotatably installed with the seat body. When the first section rotates around its axis, the second section will rotate around the axis of the first section with a predetermined interval as the radius. Since the connecting part is connected to the second section of at least two support members at the same time, the connected support members rotate synchronously, and all the connected second sections also revolve synchronously around the corresponding first section, realizing the change of the lateral position of all the connected second sections. In this application, the lateral direction is the arrangement direction of the two correction units.

[0007] In other words, by rotating the first segment of the two correction units, the second segment can move laterally. The distance between the second segment and the user's upper torso is adjustable, so the second segment can limit the user's lateral movement and correct the problem of the user's upper body tilting.

[0008] In one example, the correction unit further includes a rotation angle control component, which cooperates with the first segment or the second segment to lock in order to position the second segment at an angle about the axis of the first segment.

[0009] In one example, the rotation angle control component includes a bolt, a clip, and a nut, and at least one of the second segments is locked to the connecting component via the bolt, the clip, and the nut to suppress rotation of the second segment relative to the axis of the first segment.

[0010] In one example, the connecting component has an inner cavity, the buckle is located in the inner cavity, the inner cavity has opposing first and second sidewalls, the first sidewall has a through hole, the threaded portion of the bolt passes through the through hole in sequence, the buckle is connected to the nut installed on or outside the second sidewall, the bolt includes a head, a large diameter section and a small diameter section connected in sequence, the small diameter section includes a threaded section so that the buckle clamps the second section.

[0011] In one example, a mounting hole is provided on the side of the second sidewall facing the inner cavity, and the nut is fixed inside the mounting hole; Alternatively / and, the second segment is further provided with an annular boss, and the connecting component is supported on the annular boss.

[0012] In one example, the rotation angle control component includes a worm gear and a worm with a self-locking engagement. The worm is rotatably connected to the connecting component, and the worm gear is fitted and fixedly connected to one of the second segments. When the worm rotates, the worm gear can drive the second segment to revolve around the axis of the first segment.

[0013] In one example, the second segment is provided with an annular boss, and the worm gear is supported and connected to the annular boss; Alternatively / and, the connecting member has an inner cavity, and at least a portion of the worm gear and the worm is located in the inner cavity; Alternatively / and, the connecting component includes a first part and a second part, the first part and the second part forming an inner cavity, the worm gear being located in the inner cavity, and the first part and the second part forming mounting holes for mounting the two ends of the worm, the two ends of the worm also having limiting protrusions to restrict the worm from moving axially relative to the connecting component.

[0014] In one example, a fore-and-aft adjustment mechanism is also included for adjusting the fore-and-aft position of the correction unit relative to the seat cushion.

[0015] In one example, the fore-and-aft adjustment mechanism includes a first support body that is movable relative to the seat cushion in a fore-and-aft direction. The first support body is provided with at least one of the correction units, and the first segment of the correction unit is rotatably connected to the first support body.

[0016] In one example, the front-to-back adjustment mechanism includes an adjustment screw that extends in the front-to-back direction and is rotatably mounted on the seat cushion. The adjustment screw is threadedly engaged with the first support body. The adjustment screw can rotate in the forward or reverse direction to adjust the first support body to move forward or backward relative to the seat cushion.

[0017] In one example, the correction unit is provided on both sides of the first support body, respectively located on both sides of the seat cushion.

[0018] In one example, each of the corrective units further includes a second support body, on which all the first segments of a corrective unit are rotatably mounted, and the second support body is slidably connected relative to the seat cushion in the front-back direction.

[0019] In one example, each of the correction units further includes a support assembly, which is the adjustment mechanism. The support assembly includes a movable member and a fixed member. The fixed member is fixedly connected to the seat. The fixed member includes a first inclined section, and the movable member includes a horizontal section. The movable member is capable of moving along the inclined section to adjust the height of the horizontal section. In each correction unit, all the first sections are rotatably disposed on the horizontal section.

[0020] In one example, the movable component includes a second inclined segment, which is plugged into or slidably engaged with the first inclined segment. The bracket assembly also includes a positioning element for locking the relative position between the first and second inclined segments.

[0021] In one example, a height adjustment mechanism is also included for adjusting the height position of the correction unit relative to the seat cushion.

[0022] In one example, the height adjustment mechanism includes a height adjustment bolt and a connecting plate. The first segment of the same correction unit is axially limited and circumferentially rotated with the connecting plate. The height adjustment bolt is threaded to the seat and its end is connected to the connecting plate so that the height of the support can be adjusted by rotating the height adjustment bolt.

[0023] In one example, the connecting component includes a connecting body, and a baffle is also connected to the connecting body, the baffle being rotatable relative to the connecting body in a vertical plane.

[0024] In one example, one or more sides of the baffle have inward or outward bends. When the baffle is rotated relative to the connector to a first position, one of the inward bends is vertically positioned, and the inward bends of the two baffles are opposite each other to restrict the user's body from leaning forward.

[0025] In one example, when the baffle is rotated to a second position relative to the connecting body, one of the bent portions rotates to a horizontal position to serve as an armrest of the seat.

[0026] In one example, the connector is a split structure, comprising a first part and a second part, which together form an inner cavity.

[0027] In one example, the first segment and the second segment are connected by a connecting segment whose axis is set at an angle to the vertical direction; Alternatively / and, each of the first segments is provided with a second segment at both ends, and the first segment and the second segment are connected by a connecting segment at an angle to the vertical direction; Alternatively / and, the number of the correction units is two, respectively for installation on both sides of the seat cushion, and the posture correction mechanism also includes a transmission mechanism, which connects at least one of the first segments of the two correction units to drive the first segments of the two correction units to rotate synchronously around their axes.

[0028] In one example, the system includes a crossbar, a first link, and a second link, with the first link and the second link located at opposite ends of the crossbar. The crossbar is movable relative to the seat in a forward-backward direction. The crossbar is provided with a groove extending along its length. One end of the first link is slidably disposed inside the groove, and the other end is connected to the first segment in a correction unit. One end of the second link is slidably disposed inside the groove, and the other end is connected to the first segment in another correction unit.

[0029] This application also provides a seating arrangement, including: cushion; In any of the above-mentioned posture correction mechanisms, the correction unit is located on the side of the seat cushion.

[0030] The seating provided in this application includes the aforementioned posture correction mechanism, and therefore the seating also includes the aforementioned technical effects of the posture correction mechanism. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the seating in a specific embodiment of this application; Figure 2 for Figure 1 A partial structural schematic diagram of the seat shown; Figure 3 for Figure 1 A schematic diagram of the structure of some components of the seating unit shown; Figure 4 This is a schematic diagram of the structure of some components of the correction mechanism in one embodiment of this application; Figure 5 This is an exploded view of components such as the baffle and connecting parts in one embodiment of this application; Figure 6 for Figure 1 Top view of the seating; Figure 7 for Figure 1 The diagram shows the seat with the baffle in a limited position. Figure 8 for Figure 7 Top view of the structure shown; Figure 9 This is a schematic diagram of the seating structure in another specific embodiment of this application; Figure 10 for Figure 9 A schematic diagram showing the seat with the baffle in the front limit position; Figure 11 for Figure 9 An exploded view of some components of the correction mechanism shown in the diagram; Figure 12 for Figure 11 A schematic diagram showing the components of the structure in an assembled state; Figure 13 This is a schematic diagram of the seat structure in another specific embodiment of this application; Figure 14 for Figure 13 A schematic diagram of the correction mechanism in the structure shown; Figure 15 for Figure 13 A schematic diagram showing the seat with the baffle in the front limit position; Figure 16 This is a schematic diagram showing the connection of the transmission mechanism, the first support body, and the two correction units in another embodiment of this application; Figure 17 This is a schematic diagram of the structure of some components of the seating unit in one embodiment of this application.

[0032] The annotations in the attached figures are explained below: 100 Seat body; 110 Seat cushion; 111 Circular tube; 112 Center plate; 120 Backrest; 130 Base; 200 Correction Unit; 210 First Correction Unit; 220 Second Correction Unit; 201 Baffle; 2011 First Bending Section; 2012 Limiting Bending Section; 2013 Connecting Shaft; 2014 Fixing Bolt; 202 Support Component; 2021 First Section; 20211 Boss Section; 2022 Second Section; 2023 Connecting Section; 2024 Annular Boss; 203 Rotation Angle Control Component; 2031 Buckle; 2032 Bolt; 2033 Nut; 2034 Worm Gear; 2035 Worm Gear Wheel; 2036 Washer; 204 Connector; 2041 Through hole; 204A First part; 204B Second part; 205 Height adjusting bolt; 206 Connecting plate; 207 First nut; 208 Fixing member; 2081 Adjusting hole; 209 Movable part; 2091 Horizontal section; 2092 Second inclined section; 2093 Pressure plate; 2094 Threaded component; 201A Mounting plate; 204' Second support; 300 First support; 301 First through hole; 400 Adjusting screw. Detailed Implementation

[0033] This application provides a posture correction mechanism that can be fitted into ordinary chairs, study chairs, ergonomic chairs, and of course, can also be applied to wheelchairs or other environments. This application further describes the technical solution and its effects using the mechanism fitted into a standalone chair as an example.

[0034] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Please refer to Figures 1 to 16 , Figure 1 This is a structural schematic diagram of a posture correction mechanism and seating in a specific embodiment of this application; Figure 2 for Figure 1 A partial structural schematic diagram of the seat shown; Figure 3 for Figure 1 A schematic diagram of the structure of some components of the seating unit shown; Figure 4 This is a structural schematic diagram of some components of the correction mechanism, including the support member, connecting member, and rotation angle control member, in one embodiment of this application. Figure 5 This is an exploded view of components such as the baffle and connector in one embodiment of this application; Figure 6 for Figure 1 Top view of the seating; Figure 7for Figure 1 The diagram shows the seat with the baffle in a limited position. Figure 8 for Figure 7 Top view of the structure shown; Figure 9 This is a schematic diagram of the seating structure in another specific embodiment of this application; Figure 10 for Figure 9 The diagram shows the seat with the baffle in a limited position. Figure 11 for Figure 9 An exploded view of some components of the correction mechanism shown, including the support parts, connecting parts, and rotation angle control parts; Figure 12 for Figure 11 A schematic diagram showing the components of the structure in an assembled state; Figure 13 This is a schematic diagram of the seat structure in another specific embodiment of this application; Figure 14 for Figure 13 A schematic diagram of the correction mechanism in the structure shown; Figure 15 for Figure 13 The diagram shows the seat with the baffle in a limited position. Figure 16 This is a schematic diagram showing the connection of the transmission mechanism, the first support body, and the two correction units in another embodiment of this application; Figure 17 This is a schematic diagram of the structure of some components of the seating unit in one embodiment of this application.

[0036] The seating in this embodiment includes a seating body 100, which may include a base 130, a seat cushion 110, a backrest 120, and two sets of correction units 200. The backrest 120 may be fixedly connected to the seat cushion 110, and the two may also rotate relative to each other, i.e., the backrest 120 may rotate relative to the seat cushion 110 by a predetermined angle to meet different usage functions. The seat cushion 110 is supported on the base 130, and the seat cushion 110 may be rotatably supported on the base 130. The base 130 may include components such as steering wheels and a central support column. The seat cushion 110 may include an annular tube 111, and the cross-section of the annular tube 111 may be circular or square, etc.

[0037] In this embodiment, two sets of correction units 200 are located on both sides of the seat cushion 110. For the sake of brevity in describing the technical solution, the two sets of correction units 200 are defined as the first correction unit 200 and the second correction unit 200, respectively. The first correction unit 200 and the second correction unit 200 are located on the left and right sides of the seat cushion 110, respectively. The structures of the first correction unit 200 and the second correction unit 200 can be completely identical, or they can be slightly different, as long as the technical effects described below can be achieved. The accompanying drawings of this application show an example in which the structures of the first correction unit 200 and the second correction unit 200 are completely identical.

[0038] In this embodiment, each correction unit 200 includes at least two support members 202 arranged in the front-back direction, a connecting member, and a rotation angle control member 203. It should be noted that this application defines the arrangement direction of the seat cushion 110 and the backrest 120 as the front-back direction, where the side facing the user's face when sitting on the seat cushion is considered the front, and the side where the backrest 120 is located is considered the back. In this embodiment, each support member 202 includes a first segment 2021 and a second segment 2022 connected along its length, and the first segment 2021 and the second segment 2022 are connected by a connecting segment 2023. The connecting segment 2023 can be a horizontal segment or an inclined segment. The support member 202 can be an integral structure or a split structure. The support member 202 can be a tubular component, which helps to reduce the overall weight of the seating. For example, in one example, the support member 202 can be a simple circular tube. The first segment 2021 is rotatably connected to the seat body 100, and the rotation axis of the first segment 2021 relative to the seat body 100 is approximately vertical.

[0039] In this embodiment, the axis of the second segment 2022 is parallel to the axis of the first segment 2021 and staggered within a first plane, so that the second segment 2022 can revolve around the axis of the first segment 2021. The distance between the axis of the first segment 2021 and the axis of the second segment 2022 of each support member is equal. The axes of the second segment 2022 of all supports in the correction unit 200 are located in a second plane, and the axes of all first segments 2021 are located in a third plane. The second and third planes are parallel or coincident. When the posture correction mechanism is installed on a seat, the first plane can be a horizontal plane, and the second and third planes are both vertical planes.

[0040] In this embodiment, the correction unit 200 further includes a connecting component that connects the second segments 2022 of at least two supports so that all supports 202 connected in the same correction unit 200 rotate synchronously; wherein the first plane is perpendicular to the axis of the first segment 2021. This application illustrates the connecting component connecting all the second segments 2022 in a correction unit 200.

[0041] When the posture correction mechanism is in use, a correction unit 200 is provided on one or both sides of the seat cushion 110. The first segment 2021 of the support member is rotatably installed with the seat body 100. When the first segment 2021 rotates around its axis, the second segment 2022 will rotate around the axis of the first segment 2021 with a predetermined interval as the radius. Since the connecting component is simultaneously connected to the second segment 2022 of at least two support members 202, the connected support members rotate synchronously, and all the connected second segments 2022 also revolve synchronously around the corresponding first segment 2021. This allows for changes in the lateral position of the connected second segments 2022. In this application, the lateral direction refers to the arrangement direction of the two correction units 200.

[0042] In other words, by rotating the first segment 2021 of the two correction units 200, the second segment 2022 can move laterally. The distance between the second segment 2022 and the user's upper torso is adjustable. In this way, the second segment 2022 can limit the user's lateral movement and correct the problem of the user's upper body tilting.

[0043] In one specific implementation, the correction unit 200 further includes a rotation angle control component 203, which can at least cooperate with the first segment 2021 or the second segment 2022 to lock in place, thereby positioning the angular position of the second segment 2022 rotating around the axis of the first segment 2021. This fixes the second segment 2022 in the corresponding position, improving the reliability of use.

[0044] In one embodiment, the posture correction mechanism further includes a front-to-back adjustment mechanism for adjusting the front-to-back position of the correction unit 200 relative to the seat cushion 110. This allows the front-to-back position of the correction unit to be adjusted according to different users, thereby adapting to different users and improving the flexibility of the seating.

[0045] Similarly, the posture correction mechanism in this embodiment may also include a height adjustment mechanism for adjusting the height of the correction unit 200 relative to the seat cushion 110 to suit the needs of different users.

[0046] The following examples illustrate several specific implementations of the rotation angle control component 203, the height adjustment mechanism, and the front-to-back adjustment mechanism.

[0047] The following are several specific implementation methods for the seating, described in detail below.

[0048] Example 1

[0049] Please refer to Figures 1 to 4 In one specific embodiment, both the first segment 2021 and the second segment 2022 are straight pipe segments extending vertically, and a connecting segment 2023 at an angle to the vertical direction connects the first segment 2021 and the second segment 2022. In this embodiment, the first segment 2021 and the second segment 2022 of the support member 202 are both straight pipe segments, resulting in a simple structure. The angle between the connecting segment 2023 and the vertical direction can be an acute angle, meaning the first segment 2021 and the second segment 2022 are connected by an inclined segment; alternatively, the angle between the connecting segment 2023 and the vertical direction can be a right angle, meaning the first segment 2021 and the second segment 2022 are connected by a horizontal segment.

[0050] In this embodiment, the connecting component includes a connecting body 204 and a baffle 201. A second segment 2022 on the same side penetrates the connecting body 204, and the baffle 201 is connected to the inner side of the connecting body 204. The baffle 201 has a vertical surface that can contact the user's body for lateral restraint.

[0051] Please see again Figure 3 In this example, the front-to-back adjustment mechanism includes a first support body 300, which is movable relative to the seat cushion 110 in the front-to-back direction. The first segment 2021 of the two sets of correction units 200 is rotatably connected to the first support body 300. The first correction unit 200 and the second correction unit 200 are respectively located at the two ends of the first support body 300. The support member 202 is rotatably connected to the seat body 100 through the first support body 300. The two ends of the first support body 300 can slidably pass through the annular tube 111 of the seat cushion 110. While the annular tube 111 supports the first support body 300, the first support body 300 can slide back and forth along the annular tube 111.

[0052] In this embodiment, by adjusting the front and rear positions of the first support 300, the front and rear positions of the two correction units 200 can be adjusted to meet the needs of different users, making the seat highly flexible in use.

[0053] Please refer to this again. Figure 3 The front and rear adjustment mechanism may also include an adjustment screw 400, which extends in the front and rear direction and is rotatably mounted on the seat cushion 110. Figure 1 The image shows a center plate 112 fixed at the center of the seat cushion 110. The center plate 112 is connected to the base 130. The front and rear ends of the center plate 112 have upward-curving protrusions 1121. Please refer to [the image / reference]. Figure 17 Understanding this, an annular tube 111 is mounted on the raised portion 1121, and the left and right sections of the annular tube 111 are fitted with first support bodies 300. Thus, the first support body 300 is located above the middle plate 112, and its forward and backward sliding does not interfere with the middle plate 112. The seating portion of the cushion 110 can be fixed to the annular tube 112 with screws, and the adjusting screw 400 is rotatably mounted on the raised portion 1121 at the front end of the middle plate 112. A boss 401 is provided at the rear end of the adjusting screw 400 to prevent it from slipping off the first support body 300. Of course, the structure of the cushion 110 is not limited to the structure described in this application, as long as the rotatable mounting of the adjusting screw 400 is possible. In this embodiment, the adjusting screw 400 is threadedly engaged with the first support body 300, and the adjusting screw 400 rotates forward or backward to adjust the movement of the first support body 300 relative to the cushion 110. For example, when the adjusting screw 400 is rotated clockwise, the first support body 300 can move forward relative to the seat cushion 110, and when the adjusting screw 400 is rotated counterclockwise, the first support body 300 can move backward relative to the seat cushion 110.

[0054] In this embodiment, the first support 300 can be moved back and forth by rotating the adjusting screw 400, thereby achieving synchronous adjustment of the two correction units 200 in the front and back directions. The adjustment method is simple and the adjusting screw 400 occupies little space.

[0055] Users of different heights have different requirements for the height of the baffle 201. In order to meet the needs of different users, the following settings have been made in this application.

[0056] Please refer to Figure 2 In this embodiment of the application, each correction unit 200 further includes a height adjustment mechanism for adjusting the height of the support member 202 relative to the first support body 300, thereby adjusting the height of the baffle 201. The height adjustment mechanism can adjust the height of the baffle 201 to a position close to the user's waist and below the armpits on both sides of the body, so that the baffles 201 on both sides tend to fit the user's body on both sides, thereby providing left and right support limits and further improving the flexibility of the seat.

[0057] The height adjustment mechanism can take many forms, such as motor-driven or manual. The following is a manual adjustment method.

[0058] In this embodiment, the height adjustment mechanism may further include a height adjustment bolt 205 and a connecting plate 206. Each first segment 2021 on each side is axially limited and circumferentially rotated with the connecting plate 206. In this embodiment, the first segments 2021 of each support member 202 are connected together via the connecting plate 206. The connecting plate 206 may be located above or below the first support body 300. Figure 1 , Figure 2 and Figure 7 (As shown in the diagram). Specifically, the connecting plate 206 is provided with mounting holes that correspond one-to-one with the first segment 2021. The first support body 300 is provided with threaded holes that are threadedly connected to the height adjusting bolts 205, and one end of the height adjusting bolts 205 passes through the threaded holes to connect to the connecting plate 206.

[0059] In this embodiment, the support members 202 are all axially positioned and connected to the connecting plate 206, and the height of each support member on the same side can be synchronously adjusted by the height adjustment bolt 205.

[0060] Please combine Figure 4 and Figure 5In this embodiment, each of the corrective units 200 has a connecting body 204 with a through hole 2041 corresponding to a support member 202. The second segment 2022 of all support members 202 in the same corrective unit 200 is rotatably disposed within the corresponding through hole 2041 of the connecting body 204. The upper end of the second segment 2022 may be exposed outside the through hole 2041, or it may not be exposed outside the through hole 2041. The through hole 2041 can be a through hole or a blind hole. The second segment 2022 is provided with an annular boss 2024, the connecting body 204 is supported by the annular boss 2024, and the baffle 201 is connected to the connecting body 204. The connecting body 204 can be a solid structure, or it can be a partially hollow structure.

[0061] In this embodiment, the connector 204 can constrain the second segment 2022 on the same side, which is conducive to the synchronous rotation of the support member 202 on the same side and the mechanism has high rotational flexibility.

[0062] By rotating the first section of the support, the connecting parts can be brought closer to the center of the seat or extended to the sides of the seat.

[0063] Please refer to this again. Figure 4 In this embodiment, the rotation angle control component 203 includes a bolt 2032, a buckle 2031, and a nut 2033. The second segment 2022 is locked to the connecting body 204 by the bolt 2032, the buckle 2031, and the nut 2033 to suppress the rotation of the first segment 2021 relative to the first support body 300. Specifically, the two ends of the first support body 300 are provided with through holes 301 corresponding to each of the first segments on the corresponding side, and the first segment is sleeved inside the through holes 301. Since all the second segments 2022 on the same side revolve synchronously around the axis of the corresponding first segment 2021, when one second segment 2022 is suppressed from relative rotation, the revolution of the other second segments 2022 will also be suppressed. Therefore, only one rotation angle control component 203 can be provided in a correction unit 200. Of course, two or more rotation angle control components 203 can also be provided, that is, at least two second segments 2022 in a correction unit 200 are provided with rotation angle control components 203, which can improve the reliability of locking.

[0064] The buckle 2031 can be a U-shaped structure, fitted onto the second section 2022. The U-shaped buckle 2031 can be located inside the connecting body 204, meaning the connecting body 204 has an internal cavity, and the U-shaped buckle 2031 is located within this cavity, resulting in a more aesthetically pleasing appearance for the straightening unit 200. The internal cavity has opposing first and second sidewalls. A through hole is provided on the first sidewall, through which the threaded portion of the bolt 2032 passes sequentially, through the through hole and the buckle 2031, and connects to a nut mounted on or outside the second sidewall. This application shows the nut mounted on the side of the second sidewall facing the internal cavity. For example, the second sidewall may have an N-sided hole adapted to the nut, such as a hexagonal hole or other polygonal hole. The bolt 2032 may include a head, a large-diameter section, and a small-diameter section. The diameter of the large-diameter section is larger than that of the small-diameter section. The large-diameter section can be a cylindrical section, and the small-diameter section may include a threaded section. During installation, the threaded section of bolt 2032 passes through the open end of U-shaped clip 2031 from one side of connector 204, and the threaded section connects to the nut located on connector 204. Figure 4 The diagram shows the nut installed on the cavity wall of the inner cavity. The end face of the larger diameter section away from the head can extend into the interior of the connector 204 and abut against one side wall of the U-shaped buckle 2031, thereby locking the second section 2022 with the buckle 2031.

[0065] In one specific embodiment, the two correction units 200 can also share a single transmission mechanism 500. External driving force, through this transmission mechanism 500, can simultaneously drive the first segment 2021 of both correction units 200 to rotate, thereby achieving synchronous adjustment of the rotation angle of the second segment 2022 in both correction units 200. This results in a simple structure for the posture correction mechanism and a high degree of synchronization in the rotation of the second segment 2022 of the two correction units 200. The external driving force can come from human power, or from a motor or other power components. The transmission mechanism 500 can be installed at a suitable position on the seat, for example, it can be located under the seat cushion.

[0066] Please refer to transmission mechanism 500. Figure 16 , Figure 16The diagram illustrates the specific structure of a transmission mechanism 500, which includes a crossbar 501, a first connecting rod 502, and a second connecting rod 503. The crossbar 501 is movable relative to the seat in the front-back direction and can be slidably disposed under the seat cushion. A groove 5011 extending along its length (Y direction) is provided on the crossbar 501. One end of the first connecting rod 502 is slidably disposed inside the groove 5011, and the other end is connected to the first segment 2021 in the left-side correction unit; the two can be hinged. One end of the second connecting rod 503 is slidably disposed in the groove 5011, and the other end is connected to the first segment 2021 in the right-side correction unit. When the crossbar 501 reciprocates in the front-back direction X, it can simultaneously drive the first segments on both sides to rotate around an axis via the first connecting rod 502 and the second connecting rod 503, thereby achieving synchronous rotation of the second segments 2022 on both sides.

[0067] In this embodiment, the transmission mechanism 500 has a simple structure and high operational flexibility.

[0068] A first nut 207 can also be set at the position where the second segment 2022 protrudes from the upper surface of the connector 204 to prevent the connector 204 from coming off the second segment 2022.

[0069] In addition to preventing users from leaning to the side, seating can also further inhibit users from leaning forward.

[0070] Please refer to Figure 1 , Figures 5 to 8 In this embodiment, the baffle 201 is rotatable relative to the connecting body 204 in a vertical plane. One side of the baffle 201 has a limiting bend 2012. When the baffle 201 rotates to the first position relative to the connecting body 204, the limiting bend 2012 is located in front of the user's upper body, approximately in front of the user's chest, and the limiting bends 2012 of the two baffles 201 are opposite each other to restrict the user's body from leaning forward. That is, when the baffle 201 is in the first position, the side of the baffle 201 can restrict the user's left and right position, and the limiting bend 2012 can be located in front of the user's upper body, providing forward support and limiting the user's upper body to prevent the user's upper body from leaning forward excessively.

[0071] Please refer to this again. Figure 1 , Figure 6 In one embodiment, when it is not necessary to limit the user's upper body forward and left and right support, the baffle 201 can be rotated to a second position relative to the connecting body 204, and the limiting bending part 2012 moves away from the front of the user.

[0072] In one specific embodiment, the rotation of the baffle 201 relative to the connecting body 204 can be achieved in the following way: the baffle 201 is provided with a connecting shaft 2013, and the connecting body 204 is provided with a hole for insertion into the connecting shaft 2013. When the baffle 201 rotates around the connecting shaft 2013 to a first position, the baffle 201 can be fixed to the connecting body 204 by fixing bolts 2014. When the baffle 201 rotates around the connecting shaft to a second position, the baffle 201 can be fixed to the connecting body 204 again by fixing bolts 2014, and the limiting bending part 2012 can be rotated away from the front side of the user.

[0073] Figure 1 and Figure 5 The baffle 201 shown also has a first bend 2011 on its other side, which can be used as a handrail. Please refer to [link / reference]. Figure 1 , Figure 1 In this state, the limiting bend 2012 does not limit the user's forward tilt. The first bend 2011 and the limiting bend 2012 can be provided on opposite sides of the baffle 201.

[0074] As can be seen from the above description, one or more sides of the baffle 201 also have inward or outward bending portions. When the baffle 201 is rotated to the first position relative to the connecting body 204, one bending portion (the limiting bending portion 2012 as described above) is vertically arranged, and the bending portions of the two baffles are opposite to each other to restrict the user's body from leaning forward.

[0075] When the baffle 201 rotates relative to the connecting body 204 to the second position, one of the bent portions rotates to a horizontal state to serve as an armrest of the seat. The bent portion serving as an armrest in the second position can be the same bent portion that serves as a restraint for leaning forward in the first position, or it can be a bent portion on a different side of the baffle.

[0076] The baffle 201 in the above embodiments can be made of lightweight plastic, or it can be made of high-strength metal.

[0077] in Figure 6 A schematic diagram showing the structure of the bent portion on the baffle 201 serving as a handrail is shown. Figure 7 and Figure 8 A schematic diagram is shown of the baffle 201 in the front limit state.

[0078] When using this type of seating, adjustments can be made as follows: When it is necessary to correct and limit the user's sitting posture, adjust the height of the support member 202, connecting body 204, and baffle 201 relative to the seat cushion to a suitable height position by rotating the height adjustment bolt 205. Loosen the nut and bolt used to lock the U-shaped buckle 2031, rotate the support member 202, and move the connecting part and baffle laterally to a suitable position close to both sides of the user's upper body. Then tighten the bolt and nut to lock the rotation angle of the support member 202. Finally, rotate the baffle 201 so that the limiting bend 2012 of the baffle 201 is located on the front side of the seat cushion to limit the forward position of the user's upper body. Figure 7 and Figure 8 As shown. Of course, the front and rear positions of the first support 300 relative to the seat cushion can also be adjusted so that the support 202, the connector 204 and the baffle 201 are in the appropriate front and rear positions.

[0079] When there is no need to limit the user's forward lean, rotating the baffle 201 makes the limiting bend 2012 of the baffle 201 parallel to the horizontal plane. The first bend 2011 acts as a handrail. Please refer to [link / reference]. Figure 1 .

[0080] Example 2

[0081] In this embodiment, the structure of the posture correction mechanism is basically the same as that in Embodiment 1. The difference lies in the structure of the connecting body 204, the rotation angle control component 203, and the forward and backward movement structure. The differences will be described in detail below. Other structures can be referred to in Embodiment 1.

[0082] In this embodiment, the rotation angle control component 203 can not only lock the second segment 2022 at the adjusted rotation angle position, but also adjust the rotation of the second segment 2022.

[0083] Please refer to Figures 9 to 12 In this embodiment, the rotation angle control component 203 includes a worm gear 2035 and a worm 2034 with a self-locking engagement. The worm 2034 is rotatably connected to the connecting body 204, and the worm gear 2035 is fitted and completely fixed to one of the second segments 2022. When the worm 2034 rotates, the worm gear 2035 drives the second segment 2022 to rotate around the first segment 2021, thereby causing the connecting component to move laterally. The worm gear 2035 can be installed inside the connecting body 204, and part of the worm 2034 can be located inside the connecting body 204, while part of the worm can be located outside the connecting body 204, so as to allow for manual drive or connection to an external drive component, which can be a motor.

[0084] Similarly, a correction unit 200 may include one rotation angle control component 203, or two or more rotation angle control components 203, for example, at least two support members 202 are provided with rotation angle control components 203.

[0085] In this embodiment, the worm gear 2035 and worm 2034 drive the second segment 2022 to rotate, which has a relatively high adjustment accuracy and is conducive to upgrading to automatic control without the need for manual operation.

[0086] Specifically, the connecting body 204 is provided with a through hole 2041, and the second section 2022 has an annular boss 2024. The worm gear 2035 is supported and connected to the annular boss 2024, and the worm gear 2035 can be fixed to the annular boss 2024 by screws 2037. This method of installing the worm gear 2035 is relatively simple and reliable. Washers 2036 are also provided on both sides of the worm gear 2035. The two washers 2036 clamp the worm gear 2035 in the middle in the vertical direction. At the same time, the side of the washers 2036 is close to the inner surface of the through hole 2041. The washers 2036, the worm gear 2035, and the connecting parts fixed on the second section 2022 rotate and engage at the through hole.

[0087] To facilitate the installation of components such as the worm gear 2035 and the worm 2034, the connecting body can be a split structure, including a first part 204A and a second part 204B arranged vertically. The two parts can be detachably connected and form an installation space for the worm gear 2035 and the worm 2034.

[0088] In this embodiment of the application, the first part 204A and the second part 204B enclose and form mounting holes for mounting the two ends of the worm 2034. The two ends of the worm 2034 also have limiting protrusions 20341 to restrict the worm from moving axially relative to the connecting component.

[0089] When both sides of the seat cushion are equipped with correction units 200, there can be two driving components that drive the screws 2034 in the two correction units to rotate. That is, one correction unit 200 corresponds to one driving component, and the driving component drives the worm gear 2034 in the corresponding correction unit 200 to rotate, which makes the adjustment more flexible.

[0090] In this embodiment, the front-to-back adjustment mechanism is the second support 204' in each correction unit 200. The first segment 2021 of the support member 202 of the correction unit 200 is rotatably mounted on the second support 204', and the second support 204' is slidably connected relative to the seat cushion 110 in the front-to-back direction. In this embodiment, the two correction units 200 can be adjusted in front-to-back position independently, with a simple structure and high adjustment flexibility.

[0091] Example 3

[0092] The main difference between this embodiment and Embodiments 1 and 2 is that the structure of the height adjustment mechanism is different, and the structure of the support component is also different, having two second sections, as described in detail below.

[0093] Please refer to Figures 13 to 15 In this embodiment, each correction unit 200 further includes a support assembly, which includes a movable member 209 and a fixed member 208. The fixed member 208 is fixedly connected to the seat body 100 and includes a first inclined section. The movable member 209 includes a horizontal section 2091 and can move along the inclined section to adjust the height of the horizontal section 2091. The first section 2021 of each support member 202 is rotatably disposed on the horizontal section 2091. This adjustment method is simple and can achieve simultaneous adjustment of height and front-back position.

[0094] In this embodiment, the movable component 209 includes a second inclined segment 2092, which is plugged into or slidably engaged with the first inclined segment. The bracket assembly also includes a positioning component for locking the relative position between the first and second inclined segments 2092. The positioning component may include screws. The first inclined segment is provided with a plurality of adjustment holes 2081 for engaging with the second inclined segment 2092. Alternatively, the positioning component may be a snap-fit ​​structure or other structure with positioning function.

[0095] In this embodiment, a first segment 2021 has a second segment 2022 at both ends. Both the first segment 2021 and the second segment 2022 are straight pipe segments extending vertically, and they are not coaxial. A connecting segment 2023 at an angle to the vertical direction connects the first segment 2021 and the second segment 2022. The two second segments 2022 at both ends of the first segment 2021 are coaxial. The axis setting of the first segment 2021 and the second segment 2022 is as described above.

[0096] For ease of installation, the horizontal section 2091 of the movable part 209 can be a split structure, as shown in the figure. The horizontal section 2091 and the pressure plate 2093 form the mounting hole of the support 202. The pressure plate 2093 can be connected to the horizontal section 2091 via a threaded component 2094. The outer peripheral wall of the first section 2021 has a boss 20221, and the first section 2021 is snapped onto the upper surface of the horizontal section 2091 via the boss 20221.

[0097] Furthermore, the correction unit 200 includes a mounting plate 201A, which is connected to a second segment 2022 of the same correction unit 200. The two can be connected by screws. For example, the mounting plate 201A is provided with a boss, and the boss is provided with a receiving hole that mates with the second segment 2022. The baffle 201 can rotate relative to the mounting plate 201A in a vertical plane. One side of the baffle 201 has a limiting bend 2011. When the baffle 201 rotates relative to the connecting body 204 to the first position, the limiting bend 2011 is vertically positioned, and the bends of the two baffles 201 face each other to limit the user's forward lean.

[0098] When the baffle 201 rotates to the second position relative to the connecting body 204, the limiting bend 2011 is horizontally positioned to serve as the armrest of the seat.

[0099] The locking of the support member 202 and the mounting plate 201A can be achieved through the aforementioned rotation angle control component 203, which will not be elaborated upon here. The attached figure shows a specific embodiment of the rotation angle control component 203 including a U-shaped buckle 2031. The mounting plate 201A is provided with the buckle 2031. By tightening the buckle 2031 bolt, the inner surface of the buckle 2031 is tightly fitted against the side of the second segment 2022 of the support member 202, thereby locking the rotation angle of the second segment 2022 around the first segment 2021. Releasing the buckle 2031 allows the second segment 2022 to rotate relative to the first segment 2021, thereby adjusting the lateral position of the baffle 201. In this application, "lateral" refers to the left-right direction of the seating, i.e. Figure 16 The Y direction shown is the forward and backward direction. Figure 16 The X direction is shown in the diagram.

[0100] The connection method between the baffle 201 and the mounting plate 201A can be referred to the description above, and will not be repeated in this article.

[0101] In the description of this application, it should be noted that, in the embodiments of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0102] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0103] The directional terms used in the embodiments of this application, such as "inner" and "outer," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to 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 the embodiments of this application. Furthermore, unless otherwise stated in this application, "multiple" as used in this application refers to two or more.

[0104] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0105] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0106] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A posture correction mechanism, characterized in that, The device includes at least one correction unit, which includes at least two support members arranged in a front-rear direction. Each support member includes a first segment and a second segment in the height direction. The axis of the second segment is parallel to the axis of the first segment and is staggered in a first plane so that the second segment can revolve around the axis of the first segment. The distance between the axes of the first segment and the axes of the second segment of each support member in the same correction unit is equal. The axes of the second segments of all support members in the same correction unit are located in a second plane, and the axes of all the first segments are located in a third plane. The second plane and the third plane are parallel or coincident. The correction unit further includes a connecting component that connects the second segments of at least two of the supports so that all the supports connected in the same correction unit rotate synchronously; wherein the first plane is perpendicular to the axis of the first segment.

2. The posture correction mechanism according to claim 1, characterized in that, The correction unit also includes a rotation angle control component, which can at least cooperate with the first segment or the second segment to lock in order to position the angular position of the second segment rotating around the axis of the first segment.

3. The posture correction mechanism according to claim 2, characterized in that, The rotation angle control component includes a bolt, a clip, and a nut. At least one of the second segments is locked to the connecting component via the bolt, the clip, and the nut to suppress rotation of the second segment relative to the axis of the first segment.

4. The posture correction mechanism according to claim 3, characterized in that, The connecting component has an inner cavity, and the buckle is located in the inner cavity. The inner cavity has a first sidewall and a second sidewall opposite to each other. A through hole is provided on the first sidewall. The threaded portion of the bolt passes through the through hole in sequence. The buckle is connected to the nut installed on or outside the second sidewall. The bolt includes a head, a large diameter section and a small diameter section connected in sequence. The small diameter section includes a threaded section so that the buckle clamps the second section.

5. The posture correction mechanism according to claim 4, characterized in that, The second sidewall has a mounting hole on the side facing the inner cavity, and the nut is fixed inside the mounting hole; Alternatively / and, the second segment is further provided with an annular boss, and the connecting component is supported on the annular boss.

6. The posture correction mechanism according to claim 2, characterized in that, The rotation angle control component includes a worm gear and a worm with a self-locking engagement. The worm is rotatably connected to the connecting component, and the worm gear is fitted and fixedly connected to one of the second segments. When the worm rotates, the worm gear can drive the second segment to revolve around the axis of the first segment.

7. The posture correction mechanism according to claim 6, characterized in that, The second section is provided with an annular boss, and the worm gear is supported and connected to the annular boss; Alternatively / and, the connecting member has an inner cavity, and at least a portion of the worm gear and the worm is located in the inner cavity; Alternatively / and, the connecting component includes a first part and a second part, the first part and the second part forming an inner cavity, the worm gear being located in the inner cavity, and the first part and the second part forming mounting holes for mounting the two ends of the worm, the two ends of the worm also having limiting protrusions to restrict the worm from moving axially relative to the connecting component.

8. The posture correction mechanism according to claim 1, characterized in that, It also includes a fore-and-aft adjustment mechanism for adjusting the fore-and-aft position of the correction unit relative to the seat cushion.

9. The posture correction mechanism according to claim 8, characterized in that, The front-to-back adjustment mechanism includes a first support body, which is movable relative to the seat cushion in the front-to-back direction. The first support body is provided with at least one of the correction units, and the first segment of the correction unit is rotatably connected to the first support body.

10. The posture correction mechanism according to claim 9, characterized in that, The front-to-back adjustment mechanism includes an adjustment screw that extends in the front-to-back direction and is rotatably mounted on the seat cushion. The adjustment screw is threadedly engaged with the first support body. The adjustment screw can rotate in the forward or reverse direction to adjust the first support body to move forward or backward relative to the seat cushion.

11. The posture correction mechanism according to any one of claims 8 to 10, characterized in that, The first support body has the correction unit on both sides, located on both sides of the seat cushion.

12. The posture correction mechanism according to claim 8, characterized in that, Each of the corrective units further includes a second support body, on which all the first segments of a corrective unit are rotatably mounted, and the second support body is slidably connected relative to the seat cushion in the front-back direction.

13. The posture correction mechanism according to claim 8, characterized in that, Each of the aforementioned correction units further includes a support assembly, which is the adjustment mechanism. The support assembly includes a movable member and a fixed member. The fixed member is fixedly connected to the seat. The fixed member includes a first inclined section, and the movable member includes a horizontal section. The movable member is capable of moving along the inclined section to adjust the height of the horizontal section. In each of the aforementioned correction units, all of the first segment rotations are located on the horizontal segment.

14. The posture correction mechanism according to claim 13, characterized in that, The movable component includes a second inclined section, which is inserted into or slidably engaged with the first inclined section. The bracket assembly also includes a positioning component for locking the relative position between the first inclined section and the second inclined section.

15. The posture correction mechanism according to any one of claims 1 to 10, characterized in that, It also includes a height adjustment mechanism for adjusting the height position of the correction unit relative to the seat cushion.

16. The posture correction mechanism according to claim 15, characterized in that, The height adjustment mechanism includes a height adjustment bolt and a connecting plate. The first section of the same correction unit is axially limited and circumferentially rotated with the connecting plate. The height adjustment bolt is threaded to the seat and its end is connected to the connecting plate so that the height of the support can be adjusted by rotating the height adjustment bolt.

17. The posture correction mechanism according to any one of claims 1 to 10, characterized in that, The connecting component includes a connecting body, and a baffle is also connected to the connecting body. The baffle is rotatable relative to the connecting body in a vertical plane.

18. The posture correction mechanism according to claim 17, characterized in that, One or more sides of the baffle have inward or outward bends. When the baffle is rotated relative to the connecting body to a first position, one of the inward bends is vertically positioned, and the inward bends of the two baffles are opposite each other to restrict the user's body from leaning forward.

19. The posture correction mechanism according to claim 18, characterized in that, When the baffle is rotated to the second position relative to the connecting body, one of the bent portions rotates to a horizontal state to serve as an armrest of the seat.

20. The posture correction mechanism according to claim 17, characterized in that, The connector is a split structure, comprising a first part and a second part, which together form an inner cavity.

21. The posture correction mechanism according to any one of claims 1 to 10, characterized in that, The first segment and the second segment are connected by a connecting segment, the axis of which is set at an angle to the vertical direction; Alternatively / and, each of the first segments is provided with a second segment at both ends, and the first segment and the second segment are connected by a connecting segment at an angle to the vertical direction.

22. The posture correction mechanism according to any one of claims 1 to 10, characterized in that, The number of the correction units is two, which are respectively installed on both sides of the seat cushion. The posture correction mechanism also includes a transmission mechanism, which connects at least one of the first segments of the two correction units to drive the first segments of the two correction units to rotate synchronously around their axes.

23. The posture correction mechanism according to claim 22, characterized in that, The transmission mechanism includes a crossbar, a first connecting rod, and a second connecting rod. The first connecting rod and the second connecting rod are located at the two ends of the crossbar, respectively. The crossbar can move relative to the seat in the front-back direction. The crossbar is provided with a sliding groove extending along its length. One end of the first connecting rod is slidably disposed inside the sliding groove, and the other end is connected to the first segment in a correction unit. One end of the second connecting rod is slidably disposed inside the sliding groove, and the other end is connected to the first segment in another correction unit.

24. A seating arrangement, characterized in that, include: cushion; The posture correction mechanism according to any one of claims 1 to 23, wherein the correction unit is located on the side of the seat cushion.

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