WO2023071831A1 - Dispositif d'étirement mécanique pour unité de siège mobile, support de siège, et unité de siège - Google Patents

Dispositif d'étirement mécanique pour unité de siège mobile, support de siège, et unité de siège Download PDF

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Publication number
WO2023071831A1
WO2023071831A1 PCT/CN2022/125374 CN2022125374W WO2023071831A1 WO 2023071831 A1 WO2023071831 A1 WO 2023071831A1 CN 2022125374 W CN2022125374 W CN 2022125374W WO 2023071831 A1 WO2023071831 A1 WO 2023071831A1
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WO
WIPO (PCT)
Prior art keywords
footrest
linkage
connecting rod
hinged
seat
Prior art date
Application number
PCT/CN2022/125374
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English (en)
Chinese (zh)
Inventor
蔡赛军
李晓鸿
李元坤
吕战征
王海波
Original Assignee
锐迈科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111256078.6A external-priority patent/CN113907551B/zh
Priority claimed from CN202111258022.4A external-priority patent/CN113892772A/zh
Application filed by 锐迈科技股份有限公司 filed Critical 锐迈科技股份有限公司
Publication of WO2023071831A1 publication Critical patent/WO2023071831A1/fr

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest

Definitions

  • the invention relates to a mechanical stretching device for a movable seating unit, a seat support and a seating unit comprising said mechanical stretching device.
  • the movable seating unit or functional seat is usually equipped with a mechanical extension device, whereby it can be changed between a sitting position, a rest position (or TV position) and a lying position, in which When the seat unit is changed from a sitting position to a leisure position, the footrest of the seat unit stretches forward, and the angle between the backrest and the seat part is basically unchanged. When changing, the footrest is lifted further forward and upward than in the casual position, and the backrest is significantly reclined, so that the user of the seat unit is in the lying position with the legs higher than the head, experiencing the so-called "zero gravity" feeling .
  • the disadvantage of the known design is that, with the change of the seat unit to the reclining position, the seat portion is significantly upturned, so that the user's comfort is affected.
  • the existing seat device also has the following defects: the extension distance of the leg extension structure is generally short, and is limited by the structure of the bracket seat. If only the extension length of the leg extension structure is increased, it is easy to rub against the ground and affect the seat. Stability; the leg extension structure of the seat can only be rotated simply, the overall extension length is short, and the leg height is low in the lying position, and the zero-gravity posture that the leg height is close to the head height cannot be achieved, which affects the comfort of the seat sex;
  • the technical problem to be solved by the present invention is to provide a seat unit with a simple structure and more in line with ergonomics; on the other hand, to provide a mechanical stretching device and a seat for a movable seat unit.
  • the bracket, the mechanical stretching device and the seat bracket can provide a zero-gravity posture, wherein, by optimizing the structure of the mechanical stretching device and adjusting the size ratio of the parts, the inclination angle of the seat is increased when the seat is lying down, and the leg stretching structure Reach length and height increase to achieve the seat's zero-gravity stance.
  • the present invention provides a mechanical stretching device for a movable seat unit, the mechanical stretching device includes two halves, left and right, which are mirror-image symmetrical, and only one of the halves will be described below .
  • the mechanical stretching device according to the invention comprises:
  • a linkage bracket comprising a support structure for supporting the mechanical extension device on the ground and a linkage structure attachable to the seating portion of the seating unit;
  • said back mechanism pivotably connected to the linkage bracket and for attachment to the backrest of the seating unit; preferably, said back mechanism comprises a backrest connection attached to the backrest and a pivotable connection to the backrest The back link connected to the ground;
  • the mechanical stretching device is configured to realize the sequential transformation or reverse sequential transformation of the seat unit from the sitting posture state to the leisure posture state and then to the lying posture state, in which the footrest The piece is folded under the seat part; in the leisure position state, the footrest is stretched to the front of the seat part and is inclined relative to the horizontal direction; in the lying position state, the angle between the backrest and the seat part is relative to the Increased in the rest position state, the footrest extends further forward and upward than in the rest position state, so that the height of the highest point of the leg extension structure relative to the horizontal plane is greater than the height of the highest point of the back mechanism relative to the horizontal plane height, thereby creating a so-called "zero-gravity" position in which the seat unit user's legs are significantly higher than the head, at least higher than the chest.
  • the direction of extension of the footrest in the lying position, is at an angle between 9° and 23°, preferably between 14° and 21°, more preferably between 18° and 19°, to the horizontal Angle.
  • the included angle between the extending direction of the footrest relative to the horizontal direction in the leisure posture state is smaller than the included angle between the extending direction of the footrest relative to the horizontal direction in the lying posture state.
  • the extension direction of the footrest is at an angle between 8° and 20°, preferably between 12° and 19°, more preferably 14° to the horizontal direction. ° and 15°.
  • the seat part in the reclining position, forms an angle with the horizontal of between 8° and 17°, preferably between 13° and 16°.
  • the angle between the seat part and the horizontal direction in the lying position is properly reduced, so that the user's posture in the lying position is more comfortable.
  • the height difference between the highest point of the leg extension structure and the highest point of the back mechanism is 200 mm to 400 mm, preferably 265 mm.
  • the support structure includes a base, a first support, a second support and a base linkage assembly, wherein the first support and the second support are respectively pivotally connected to the base, and the base is connected
  • the moving assembly is arranged between the first support and the second support.
  • the linkage structure includes a side panel for attachment to the seat portion of the seat unit.
  • the linkage structure also includes a first linkage, a second linkage and a third linkage, the middle part of the second linkage is connected to the side plate in rotation, and one end of the second linkage is connected to one end of the first linkage.
  • the other end of the first linkage is connected with the first support, the other end of the second linkage is connected with one end of the third linkage, and the other end of the third linkage is connected with the footrest extension mechanism.
  • the base linkage assembly includes a back linkage and a seat linkage.
  • the back link is provided with a plurality of pivot points, and the back link is hinged with the back mechanism, preferably with the back link of the back mechanism, and with the linkage structure, preferably with the linkage structure, at different pivot points.
  • the side panels are hinged, and the seat link and the second support are hinged.
  • the forward movement of the linkage bracket can be changed.
  • the maximum allowable displacement so that in the lying position, the degree of upturning of the side plate is weakened, and the angle between the side plate and the horizontal direction is reduced. This improves user comfort.
  • the mechanical stretching device also includes a leg stretching structure, and the leg stretching structure includes a first link, a second link, a third link, a fourth link, and a first foot rest, wherein the The rear end of the first connecting rod is hinged with the linkage structure, the front end of the first connecting rod is hinged with the rear end of the second connecting rod, the rear end of the third connecting rod is hinged with the linkage mechanism, and the front end of the third connecting rod is connected with the fourth connecting rod.
  • the rear end of the connecting rod is hinged, and the second connecting rod and the fourth connecting rod are respectively hinged with the first footrest at their front ends, wherein the middle part of the second connecting rod is also hinged with the middle part of the third connecting rod, preferably A first connecting point is provided at one end of the second connecting rod close to the first connecting rod, and the second connecting rod is hinged to the middle of the third connecting rod at the first connecting point.
  • the seat device has the following defects: when the seat is stretched, the footrest mechanism is easy to rub against the ground, which affects the use of the user; the seat footrest mechanism can only be rotated simply, and the overall extension length is relatively short. The legs and feet cannot be fully supported in the posture and lying position, which affects the comfort of the seat;
  • the traditional chute structure is used in the existing mechanical stretching device with extended footrest.
  • the chute structure is prone to noise during use. Poor structural stability.
  • the present invention also provides an alternative solution to the leg extension structure and the seat extension device.
  • the leg extension structure is configured as a foot rest extension mechanism, including: a first connecting a rod, a second link, a third link, a fourth link, a first footrest, a linkage rod, a second footrest and a footrest connector;
  • the first connecting rod is used for hinged connection with the linkage bracket of the seat.
  • the fourth connecting rod One end is hinged to the second footrest, the other end is hinged to the third connecting rod, the first footrest is hinged to one end of the linkage rod, the other end of the linkage rod is hinged to the The middle part of the fourth link is hinged;
  • the footrest connector includes a first connector and a second connector, one end of the first connector is hinged to the middle of the second footrest, and the other end is hinged to one end of the second connector.
  • the other end of the second connecting piece is hinged with the middle part of the second connecting rod, and the middle part of the second connecting part is hinged with the middle part of the fourth connecting rod.
  • the middle part of the second footrest is provided with a first limiting member, and when the first limiting member is fitted against the second connecting member, the second footrest shrinks to the limit position to prevent loosening of the footrest.
  • one end of the second connecting rod close to the first connecting rod is provided with a first connection point, and the second connecting rod is hinged to the middle of the third connecting rod at the first connection point,
  • the third connecting rod is used for connecting with the linkage bracket.
  • a second connecting point is provided at an end of the second connecting rod close to the first footrest, and the second connecting rod is connected to the second connecting member at the second connecting point.
  • the end of the fourth connecting rod close to the second footrest is sequentially provided with a footrest connection point, a linkage rod connection point and a connector connection point;
  • the fourth connecting rod is connected to the second footrest at the connecting point of the footrest, the fourth connecting rod is connected to the connecting rod at the connecting point of the connecting rod, and the first The four connecting rods are connected to the second connecting piece at the connecting point of the connecting piece, and the connecting point of the linkage rod is arranged between the connecting point of the foot rest and the connecting point of the connecting piece.
  • first footrest is provided with a connection point of a second link and a linkage point, and the distance between the linkage point and the connection point of the linkage rod is greater than that between the linkage point and the second link. point distance.
  • the first footrest is located above the second footrest, and the footrest surface of the first footrest is in contact with the second footrest.
  • the footrest surfaces of the foot parts are in the same vertical plane.
  • the footrest extension mechanism when extended from the retracted position to the limit position, the footrest surfaces of the first footrest member and the second footrest member turn upward, and the first footrest member and the second footrest member rotate upward.
  • the second footrests are spaced apart from each other.
  • a footrest assembly is also included, the footrest assembly includes a first footrest and a second footrest, the first footrest is connected to the first footrest, the second footrest is connected to the The second footrest is connected.
  • the extension length of the seat footrest can be increased to increase the support for the legs and feet of the user and improve the comfort of the seat.
  • the linkage bracket includes a transmission structure, and the transmission structure connects the driving device with the leg extension structure.
  • the present invention also provides a corresponding seat extension device, comprising the footrest extension mechanism, linkage bracket and back mechanism;
  • One end of the linkage bracket is connected to the back mechanism, the other end of the linkage bracket is connected to the footrest extension mechanism, and the footrest extension mechanism is connected to the footrest assembly.
  • the transmission structure preferably includes a connected first transmission member and a second transmission member, the first transmission member is used to connect with the driving device, and the second transmission member is connected to the leg extension structure.
  • the drive is preferably a manual drive or an electric drive, preferably comprising a linear motor.
  • the present invention has the following beneficial effects:
  • the first footrest of the footrest extension mechanism of the present invention is hinged with the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are retracted and close together, taking up little space; when stretched, the extension length of the footrest extension mechanism increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • the present invention also relates to a pedal extension structure and an extension bracket.
  • a pedal extension structure and an extension bracket.
  • the present invention provides a mechanical stretching device capable of providing a zero-gravity posture, including a linkage bracket, a back mechanism, and a leg stretching structure, and the linkage bracket is rotatably connected to the leg stretching structure and said back mechanism;
  • the leg stretching structure includes a link assembly, a first footrest, a linkage rod, a second footrest and a footrest connector, and the link assembly is used to rotatably connect to the linkage bracket;
  • the first footrest A footrest is hinged to the second link of the link assembly, the second footrest is hinged to the fourth link of the link assembly, and one end of the linkage rod is connected to the first footrest
  • the other end of the connecting rod is hinged with the fourth connecting rod, and the footrest connecting member is rotatably connected between the second connecting rod, the fourth connecting rod and the second footrest ;
  • the height difference H between the highest point of the second footrest and the highest point of the back mechanism in the vertical direction is 200mm-450mm.
  • the footrest connector includes a first connector and a second connector, one end of the first connector is hinged to the middle of the second footrest, and the other end is hinged to one end of the second connector. Hinged, the other end of the second connecting part is hinged with the middle part of the second connecting rod, and the middle part of the second connecting part is hinged with the middle part of the fourth connecting rod.
  • the connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the second connecting rod is hinged to the first connecting rod, and the fourth connecting rod Hinged with the third link, the first link and the third link are rotatably connected to the linkage bracket.
  • the middle part of the second footrest is provided with a first limiting member, and when the first limiting member is fitted against the second connecting member, the second footrest shrinks to the limit position to prevent loosening of the footrest.
  • the end of the fourth connecting rod close to the second footrest is sequentially provided with a footrest connection point, a linkage rod connection point and a connector connection point;
  • the fourth connecting rod is connected to the second footrest at the connecting point of the footrest, the fourth connecting rod is connected to the connecting rod at the connecting point of the connecting rod, and the first The four connecting rods are connected to the second connecting piece at the connecting point of the connecting piece, and the connecting point of the linkage rod is arranged between the connecting point of the foot rest and the connecting point of the connecting piece.
  • first footrest is provided with a connection point of a second link and a linkage point, and the distance between the linkage point and the connection point of the linkage rod is greater than that between the linkage point and the second link. point distance.
  • the leg stretching structure when stretched from the retracted position to the limit position, the footrest surfaces of the first footrest and the second footrest turn upward, and the first footrest and the second footrest The second footrests are spaced apart from each other.
  • the distance L between the first footrest and the second footrest is not less than 140mm.
  • the present invention also provides a seat bracket, including a linkage bracket, a back mechanism and a leg extension structure, and the linkage bracket is rotatably connected between the leg extension structure and the back mechanism;
  • the leg stretching structure includes a link assembly, a first footrest, a linkage rod, a second footrest and a footrest connector, and the link assembly is used to rotatably connect to the linkage bracket;
  • the first footrest A footrest is hinged to the second link of the link assembly, the second footrest is hinged to the fourth link of the link assembly, and one end of the linkage rod is connected to the first footrest
  • the other end of the connecting rod is hinged with the fourth connecting rod, and the footrest connecting member is rotatably connected between the second connecting rod, the fourth connecting rod and the second footrest ;
  • the linkage bracket includes a supporting structure and a side plate, and the side plate is provided with a seat frame installation surface for mounting the seat frame.
  • the angle ⁇ between the seat frame installation surface and the horizontal plane is 23°
  • the corresponding angle ⁇ between the back mechanism and the horizontal plane is 14°. °.
  • the angle ⁇ between the mounting surface of the seat frame and the horizontal plane is 27°-32°.
  • the support structure includes a base, a first support, a second support and a base linkage assembly
  • the first support member and the second support member are rotatably connected to both ends of the base, and the base linkage assembly is rotatably connected to the side plate and arranged between the first support member and the second support member .
  • the base linkage assembly includes a seat linkage, a back linkage and a side panel linkage;
  • One end of the seat linkage is connected to the side panel linkage, the other end of the seat linkage is connected to the back linkage, and the side panel linkages are respectively connected to the first
  • the supporting piece is connected with the side plate.
  • the back link is provided with a support connection point for connecting with the second support, a back connection point for connecting with the back mechanism, and a back connection point for connecting with the seat link. linkage point;
  • the ratio of the distance from the linkage point to the support connection point to the distance from the linkage point to the back connection point is 0.65-0.95.
  • the back mechanism includes a backrest connector and a back link
  • the backrest connector is used to install the seat back and is hinged with the side panel
  • the back link is hinged between the backrest connector and the between the back linkages.
  • the present invention has the following beneficial effects:
  • the first footrest of the leg stretching structure of the present invention is hinged to the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are retracted and close together, taking up less space; when stretched, the stretching length of the leg stretching structure increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • the linkage bracket drives the inclination angle of the side panels and the seat frame to increase, the extension height of the leg extension structure increases, the center of gravity of the back decreases, and the leg extension structure cooperates with the linkage bracket to enable the seat to achieve a zero-gravity posture.
  • the invention also relates to a seating unit comprising a mechanical extension device as described above, a seat portion attached to said mechanical extension device, a backrest, a footstool, or a seat frame as described above, preferably comprising an electric drive device.
  • FIG. 1 is a perspective view of a mechanical stretching device according to a first embodiment of the present invention, in a sitting position;
  • FIG. 2 is a perspective view of a mechanical stretching device according to a first embodiment of the present invention, in a rest position;
  • FIG. 3 is a perspective view of a mechanical stretching device according to a first embodiment of the present invention, in a lying position;
  • Figure 4 is a side view of the mechanical stretching device according to the first embodiment of the present invention, in a sitting position;
  • Figure 5 is a side view of the mechanical stretching device according to the first embodiment of the present invention, in a rest position;
  • Figure 6 is a side view of the mechanical stretching device according to the first embodiment of the present invention, in a lying position;
  • Fig. 7 is a schematic structural view of a footrest extension mechanism according to a second embodiment of the present invention.
  • Fig. 8 is a schematic structural diagram of a sitting posture state of a seat telescopic device according to a second embodiment of the present invention.
  • Fig. 9 is a schematic structural diagram of a stretched seat stretching state in a lying position according to a second embodiment of the present invention.
  • Fig. 10 is a schematic view of the structure of the other side of Fig. 8;
  • Fig. 11 is a schematic view of the structure of the other side of Fig. 9;
  • Fig. 12 is a schematic structural diagram of the zero-gravity posture of the mechanical stretching device according to the third embodiment of the present invention.
  • Fig. 13 is a schematic structural diagram of the rest position of the mechanical stretching device according to the third embodiment of the present invention.
  • Fig. 14 is a schematic structural diagram of the sitting position of the mechanical stretching device according to the third embodiment of the present invention.
  • Fig. 15 is a structural schematic diagram of a leg stretching structure according to a third embodiment of the present invention.
  • FIG. 16 is a schematic view of the structure of the other side of FIG. 14 .
  • references herein to "one embodiment” or “an embodiment” refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention.
  • orientation or positional relationship indicated by the terms “upper”, “lower”, “left”, “right”, “top”, “bottom” etc. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of these features. Also, the terms “first”, “second”, etc. are used to distinguish similar items and not necessarily to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.
  • the mechanical stretching device includes: a linkage bracket 1 , a back mechanism 2 and a leg stretching structure 3 .
  • the linkage bracket 1 includes a support structure 12 and a linkage structure 13 .
  • the support structure 12 includes a base 121 , a first support 122 , a second support 123 and a base linkage assembly 124 .
  • the base 121 includes two mirror-symmetric side rails 1211 arranged on the left and right sides, and preferably further includes a front rail 1212 and a rear rail 1213 connecting the two side rails 1211 .
  • the first support 122 is hinged with the front end of the side rail 1211 with its lower end
  • the second support 123 is hinged with the rear end of the side rail 1211 with its lower end
  • the base linkage assembly 124 is arranged on the first support 122 and the second support. Between pieces 123.
  • the linkage structure 13 includes a side plate 131, a first linkage piece 132, a second linkage piece 133 and a third linkage piece 134, the middle part of the second linkage piece 133 is rotationally connected with the side plate 131, and one end of the second linkage piece 133 is connected with the first linkage piece 133.
  • One end of the link 132 is connected, the other end of the first link 132 is connected with the first support 122, the other end of the second link 133 is connected with one end of the third link 134, and the other end of the third link 134 is connected with the leg
  • the extension structure 3 is pivotably connected.
  • the back mechanism 2 includes a backrest link 21 attached to the backrest and a back link 22 pivotally connected thereto.
  • the backrest connector 21 is hinged to the rear end of the side plate 131 of the linkage structure 3 .
  • the leg extension structure 3 is composed of a plurality of connecting rods that are pivotally connected to each other, wherein the rear end of the first connecting rod 31 is hinged to the side plate 131 of the linkage structure 13, and the front end of the first connecting rod 31 is connected to the side plate 131 of the linkage structure 13.
  • the rear end of the second connecting rod 32 is hinged
  • the rear end of the third connecting rod 33 is hinged with the front end of the side plate 131
  • the front end of the third connecting rod 33 is hinged with the rear end of the fourth connecting rod 34
  • the second connecting rod 32 and the rear end of the fourth connecting rod 34 are hinged.
  • the fourth connecting rod 34 is respectively hinged with the first footrest 35 at its front end, wherein, one end of the second connecting rod 32 close to the first connecting rod 31 is provided with a first connection point 321, and the second connecting rod 32 The rod 32 is hinged to the middle of the third connecting rod 33 at the first connection point 321 .
  • the base linkage assembly 124 includes: a back linkage 1241, a seat linkage 1242 and a side panel linkage 1243, wherein the back linkage 1241 is provided with a plurality of pivot points, and the back linkage The parts are respectively hinged with the back link 22 of the back mechanism 2, with the side plate 131 of the linkage structure 13, with the seat linkage 1242 and with the second support 123 at different pivot points.
  • One end of the seat linkage 1242 is connected to the first support 122 through the side plate linkage 1243 , and the other end of the seat linkage 1242 is connected to the back linkage 1241 .
  • the linkage bracket 1 also includes a transmission structure 14.
  • the transmission structure 14 includes a connected first transmission member 141 and a second transmission member 142.
  • the first transmission member is used to connect with the driving device, and the second transmission member is connected to the legs.
  • the first connecting rod 31 of the structure 3 is connected, and the driving device is used to drive the linkage bracket to move through the transmission structure.
  • the driving device may be a manual driving device; in other embodiments, the driving device may be an electric driving device, and the electric driving device may be a push rod motor or a slider motor driving device.
  • the movement of the linkage bracket 1 drives the back mechanism 2 and the leg extension structure 3 to expand or contract, so that the mechanical extension device can realize the seat unit from the sitting position shown in Figure 1 to the leisure position shown in Figure 2
  • Posture state is changed successively between the reclining posture state shown in Fig. 3 again or reverse is transformed successively.
  • the first footrest 35 is folded under the seat portion; in the leisure posture state, the first footrest 35 is stretched to the front of the seat portion; in the lying state, the angle between the backrest and the seat portion is opposite.
  • the first footrest 35 extends further forwards and upwards than in said rest position, as shown in FIG. 6 , so that the highest point of the leg extension structure 3 is relative to the horizontal plane.
  • the height is greater than the height of the highest point of the back mechanism 2 relative to the horizontal plane, and the height difference is 200mm to 400mm, preferably 265mm.
  • the end surface of the footrest forms an included angle ⁇ with the horizontal direction; the seat part or the side plate 131 forms an included angle ⁇ with the horizontal direction through the seat frame mounting surface 131 a coupled to the seat part.
  • the included angle ⁇ of the footrest relative to the horizontal direction in the leisure position is smaller than the included angle ⁇ of the footrest relative to the horizontal direction in the lying position.
  • the footrest forms an angle ⁇ between 8° and 20°, preferably between 12° and 19°, more preferably between 14° and 15°, with the horizontal direction
  • the footrest forms an angle ⁇ with the horizontal of between 9° and 23°, preferably between 14° and 21°, more preferably between 18° and 19°.
  • the seat part In the lying position, the seat part forms an angle ⁇ to the horizontal of between 8° and 17°, preferably between 13° and 16°.
  • FIGS 7 to 11 show an alternative second embodiment of the invention.
  • This embodiment also provides a mechanical stretching device for a movable seating unit.
  • the difference between the second embodiment and the first embodiment mainly lies in the design of the leg extension structure.
  • the leg extension structure 3 is configured as a footrest extension mechanism, as shown in FIG. Rod 31 , second link 32 , third link 33 , fourth link 34 , first footrest 35 , linkage rod 36 , second footrest 37 and footrest connection 38 .
  • One end of the second connecting rod 32 is hinged with the first footrest 35, and the other end of the second connecting rod 32 is hinged with the first connecting rod 31.
  • the first connecting rod 31 is used to be hinged with the linkage bracket 1 of the seat.
  • One end of the rod 34 is hinged with the second footrest 37, the other end of the fourth connecting rod 34 is hinged with the third connecting rod 33, the first footrest 35 is hinged with one end of the linkage rod 36, and the other end of the linkage rod 36 is hinged. It is hinged with the middle part of the fourth connecting rod 34 .
  • the footrest connector 38 includes a first connector 381 and a second connector 382. One end of the first connector 381 is hinged to the middle of the second footrest 37, and the other end of the first connector 381 is connected to the second connector 382. One end is hinged, the other end of the second connecting member 382 is hinged to the middle of the second connecting rod 32 , and the middle of the second connecting member 382 is hinged to the middle of the fourth connecting rod 34 .
  • the first footrest 35 is hinged to the fourth link 34 through the linkage rod 36, the fourth link is connected to the second footrest, and the first footrest 35 is not connected to the fourth link
  • the relationship increases the flexibility of movement of the first footrest and the second footrest during contraction or extension.
  • the first footrest 35, the connecting rod 36, the fourth connecting rod 34, the second connecting member 382 and the second connecting rod 32 constitute a five-bar linkage mechanism, and the first footrest can be more flexibly connected with the second footrest. Close together or separate, increase the distance between the first footrest and the second footrest after separation, and increase the extension length of the second footrest.
  • the middle part of the second footrest 37 is provided with a first limiting member 371 , and when the first limiting member 371 abuts against the second connecting member 382 , the second footrest 37 shrinks to a limit position.
  • the first limiting member 371 is used to limit the maximum retracted position of the second footrest, so as to prevent the second footrest from failing to reach a predetermined position and causing looseness.
  • both the footrest surface of the second footrest and the footrest surface of the first footrest are kept in the vertical plane, so as to improve the aesthetics of the seat when it is retracted.
  • one end of the second connecting rod 32 close to the first connecting rod 31 is provided with a first connecting point 321
  • the second connecting rod 32 is hinged with the middle part of the third connecting rod 33 at the first connecting point 321
  • the third connecting rod 33 is used for being connected with linkage support 1.
  • the second link 32 is cross-connected with the third link 33 .
  • a second connecting point 322 is provided at an end of the second connecting rod 32 close to the first footrest 35 , and the second connecting rod 32 is connected to the second connecting member 382 at the second connecting point 322 .
  • the first connecting piece 381 and the second connecting piece 382 are used to connect and support the second footrest 37, the second footrest 37, the first connecting piece 381, the second connecting piece 382 and the fourth
  • the link 34 constitutes a four-bar link mechanism that can be folded and extended, and is used to support and drive the second footrest 37 to extend.
  • one end of the fourth link 34 close to the second footrest 37 is provided with a footrest connection point 341, a linkage rod connection point 342 and a connector connection point 343 in sequence; is connected with the second footrest 37, the fourth connecting rod 34 is connected with the linkage rod 36 at the linkage connecting point 342, and the fourth connecting rod 34 is connected with the second connecting member 382 at the connecting point 343,
  • the connecting rod connection point 342 is disposed between the footrest connection point 341 and the connecting piece connection point 343 .
  • the first footrest 35 is provided with a second link connection point 351 and a linkage point 352, and the distance from the linkage point 352 to the linkage link connection point 342 is greater than the distance from the linkage point 352 to the second link connection point 351. . Specifically, the distance from the linkage point 352 to the second link connection point 351 is smaller than the distance from the linkage point 352 to the linkage link connection point 342, so that the second link 32 drives the second link when the first footrest 35 is extended.
  • the connection point 351 moves downward relative to the linkage point 352, so that the footrest surface of the first footrest 35 can smoothly rotate to the horizontal position where the footrest faces upward, making the first footrest unfold more flexibly and quickly.
  • the first link 31, the second link 32, the third link 33, the fourth link 34, the first footrest 35, the linkage rod 36, the second footrest 37 and the connection between the footrest connector 38 are all pivotable connections or hinged joints, and the combinations of rotating shafts, pivot pins, rivets, bolts and nuts, or other fastening mechanisms that can realize pivotable connections can be used between the various parts.
  • Firmware connection
  • the first footrest 35 when the footrest extension mechanism shrinks to the limit position, the first footrest 35 is located above the second footrest 37, and the footrest surface of the first footrest 35 can be aligned with the second footrest.
  • the footrest surfaces of the foot pieces 37 lie in the same vertical plane.
  • a footrest assembly 39 is also included.
  • the footrest assembly 39 includes a first footrest 391 and a second footrest 392.
  • the first footrest 391 is connected with the first footrest 35
  • the second footrest The foot plate 392 is connected with the second footrest 37 .
  • the first footrest and the second footrest are respectively provided with inwardly bent footrest surfaces, and the footrest surfaces are used for fixed connection with the footrest, that is, the first footrest and the second footrest are respectively fixed on them. corresponding to the footrest.
  • the seat linkage bracket 1 drives the first link 31 and the third link 33 to rotate, so that the footrest extension mechanism moves from the retracted position shown in Figure 8 to the position shown in Figure 9
  • the footrest surfaces of the first footrest member 35 and the second footrest member 37 are in a horizontal position.
  • the second connecting rod 32 drives the first footrest 35 to rotate upwards, and the linkage rod 36 rotates with the first footrest 35, so that the first footrest 35 rotates more flexibly while supporting the first footrest 35, and the fourth connecting rod 34 drives the second footrest 37 and the footrest connector 38 to extend forward and rotate upward until the second footrest 37 stretches to the limit position .
  • the movement direction of each component in the footrest extension mechanism is opposite to that during the extension process.
  • the distance between the first footrest and the second footrest is greater than 140mm, preferably, it can be 145mm, 147mm, 150mm or 155mm. The distance between the stretched first footrest and the second footrest.
  • the first footrest of the footrest extension mechanism of the present invention is hinged with the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are retracted and close together, taking up little space; when stretched, the extension length of the footrest extension mechanism increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • This embodiment also provides a seat telescopic device, as shown in Figures 8-11, comprising: a leg extension structure 3 configured as a footrest extension mechanism, a linkage bracket 1 and a back mechanism 2; one end of the linkage bracket 1 and the back mechanism 2, the other end of the linkage bracket 1 is connected with the footrest extension mechanism, and the footrest extension mechanism is connected with the footrest assembly 39.
  • the linkage bracket 1 includes a support structure 12 and a linkage structure 13.
  • the support structure 12 includes a base 121, a first support 122, a second support 123 and a base linkage assembly 124, wherein one end of the base 121 is connected to the first support 122 , the other end of the base 121 is connected to the second support 123 , and the base linkage assembly 124 is disposed between the first support 122 and the second support 123 .
  • the base linkage assembly 124 includes: a seat linkage 1242 and a back linkage 1241, one end of the seat linkage 1242 is connected to the first support 122, and the other end of the seat linkage 1242 is connected to the back.
  • the moving part 1241 is connected.
  • the linkage structure 13 includes: a side plate 131, a first linkage piece 132, a second linkage piece 133 and a third linkage piece 134, the middle part of the second linkage piece 133 is rotationally connected with the side plate 131, and one end of the second linkage piece 133 It is connected with one end of the first linkage 132, the other end of the first linkage 132 is connected with the first support 122, the other end of the second linkage 133 is connected with one end of the third linkage 134, and the third linkage 134 is another One end is connected with the footrest extension mechanism;
  • the linkage bracket 1 also includes a transmission structure 14.
  • the transmission structure 14 includes a first transmission member 141 and a second transmission member 142 connected to each other.
  • the mechanism is connected, and the driving device is used to drive the linkage bracket to move through the transmission structure.
  • the driving device may be a manual driving device; in other embodiments, the driving device may be an electric driving device, and the electric driving device may be a push rod motor or a slider motor driving device.
  • the back mechanism 2 is connected to the side plate 131 of the linkage structure 13, and the movement of the linkage bracket 1 drives the back mechanism 2 and the footrest extension mechanism to expand or contract.
  • the footrest extension mechanism and the back mechanism can also be continuously adjusted.
  • the corresponding seat is in a casual position.
  • both the footrest extension mechanism and the back mechanism are stretched to the limit position , the corresponding seat is the lying position, and when the footrest extension mechanism and the back mechanism shrink to the limit position, the corresponding seat is the sitting position.
  • This embodiment relates to a foot rest extension mechanism and a seat telescopic device.
  • the extension and contraction of the foot rest extension mechanism is more flexible and the extension length is increased, which can better support the legs and feet and improve the Seat comfort and meet the needs of users of different heights.
  • the mechanical stretching device includes a linkage bracket 1 , a back mechanism 2 and a leg stretching structure 3 , and the linkage bracket 1 is rotatably connected between the leg stretching structure 3 and the back mechanism 2 .
  • the leg stretching structure 3 includes a link assembly 30, a first footrest 35, a linkage rod 36, a second footrest 37 and a footrest connector 38, and the link assembly 30 is used to rotatably connect to the linkage bracket 1;
  • a footrest 35 is hinged to the second link 32 of the link assembly 30, the second footrest 37 is hinged to the fourth link 34 of the link assembly 30, and one end of the linkage rod 36 is hinged to the first footrest 35 , the other end of the linkage rod 36 is hinged with the fourth link 34, and the footrest connector 38 is rotatably connected between the second link 32, the fourth link 34 and the second footrest 37; when the mechanical extension device is in In the zero-gravity posture, the height difference H between the highest point of the second footrest 37 and the highest point of the back mechanism 2 in the vertical direction is 200mm-450mm.
  • the first footrest 35 is hinged to the fourth link 34 through the linkage rod 36, the fourth link is connected to the second footrest, and the first footrest 35 is not connected to the fourth link
  • the relationship increases the flexibility of movement of the first footrest and the second footrest during contraction or extension.
  • the first footrest 35, the connecting rod 36, the fourth connecting rod 34, the second connecting member 382 and the second connecting rod 32 constitute a five-bar linkage mechanism, and the second footrest can be more flexibly connected with the first footrest. Close together or separate, increase the distance between the first footrest and the second footrest after separation, and increase the extension distance of the second footrest.
  • the backrest connector is used to connect with the backrest of the seat, and when the mechanical stretching device is in a zero-gravity posture, the seat is tilted as a whole.
  • the vertical height difference between the highest point of the second footrest 37 and the highest point of the back mechanism 2 can reach 200mm, 250mm, 280mm, 300mm, 310mm, 320mm, 350mm, 400mm or 450mm.
  • the mechanical extension device when the mechanical extension device is in a zero-gravity posture, the distance from the highest point of the second footrest 37 to the horizontal support surface is 580 mm, the distance from the backrest installation point 111 to the horizontal support surface is 270 mm, and the height difference H Reach 310mm.
  • the mechanical extension device when the mechanical extension device is in a zero-gravity posture, the distance from the highest point of the second footrest 37 to the horizontal support surface is 610 mm, the distance from the backrest installation point 111 to the horizontal support surface is 260 mm, and the height difference H Can reach 350mm.
  • the seat when the seat is in a zero-gravity posture, the user's feet and head can be at approximately the same height after lying down, which can minimize the need for the body to resist gravity, and experience a relaxed feeling similar to the weightlessness of space.
  • the linkage bracket 1 includes a support structure 12 and a side plate 131.
  • the side plate 131 is provided with a seat frame installation surface 131a for mounting the seat frame.
  • the included angle ⁇ between them is not less than 18°.
  • the included angle ⁇ between the seat frame installation surface and the horizontal plane may be 27°-32°. In some embodiments, it may be 18°, 20°, 22°, 24°, 25°, 27°, 28°, 30° or 32°.
  • the angle ⁇ between the backrest connector 21 and the horizontal plane is not greater than 20°, preferably 14°, 16°, 17°, 18° or 20°.
  • the angle between the seat frame mounting surface 131a and the horizontal plane is 20°, and the angle between the centerline of the backrest connecting member 21 and the horizontal plane is 16°.
  • the angle between the seat frame mounting surface 131a and the horizontal plane is 23°, and the angle between the centerline of the backrest connecting member 21 and the horizontal plane is 14°.
  • the angle between the back mechanism and the horizontal plane is smaller, the inclination angle of the seat frame is increased, and the height of the reclined backrest is lower when the backrest is stretched, so that the height of the user's head is lower during use.
  • the back mechanism 2 includes a back connector 21 and a back link 22.
  • the back connector 21 is used to install the seat back and is hinged with the side panel 131.
  • the back link 22 is hinged between the back connector 21 and the back link 1241. between.
  • the support structure 12 includes a base 121, a first support 122, a second support 123 and a base linkage assembly 124; the first support 122 and the second support 123 are rotatably connected to both ends of the base 121, and the base
  • the moving assembly 124 is rotatably connected to the side plate 131 and disposed between the first support member 122 and the second support member 123 .
  • the base linkage assembly 124 includes a seat linkage 1242, a back linkage 1241 and a side panel linkage 1243; one end of the seat linkage 1242 is connected to the side panel linkage 1243, and the seat linkage The other end of 1242 is connected to the back linkage 1241 , and the side plate linkage 1243 is respectively connected to the first support 122 and the side plate 131 .
  • the back linkage 1241 is provided with a support connection point 1261 for connecting with the second support 123 , a back connection point 1262 for connecting with the back mechanism 2 and a linkage for connecting with the seat linkage 1242 .
  • Point 1263; the ratio of the distance from linkage point 1263 to support connection point 1261 to the distance from linkage point 1263 to back connection point 1262 is 0.65-0.95. In some embodiments, it may be 0.65, 0.75, 0.80, 0.83, 0.85, 0.90 or 0.95.
  • the ratio of the distance from the linkage point 1263 to the support connection point 1261 to the distance from the linkage point 1263 to the back connection point 1262 is 0.84.
  • the side plates and supporting structures of the linkage bracket rotate forward and tilt upwards with the leg stretching structure, and the back linkage 1241 rotates accordingly, because the distance from the linkage point 1263 to the back connection point 1262 and the linkage
  • the ratio of the distance from the point 1263 to the supporting connection point 1261 increases the angle of inclination of the side plate when it rotates upward, increases the angle of the back mechanism to rotate backward, and lowers the center of gravity of the stretching device, so that the seat can realize the zero-gravity function in the reclining position without affect the stability of the seat.
  • the linkage bracket 1 also includes a linkage structure 13.
  • the linkage structure 13 includes a first linkage piece 132, a second linkage piece 133 and a third linkage piece 134.
  • the middle part of the second linkage piece 133 is rotationally connected with the side plate 131, and the second One end of the linkage 133 is connected to one end of the first linkage 132, the other end of the first linkage 132 is connected to the first support 122, the other end of the second linkage 133 is connected to one end of the third linkage 134, and the third The other end of the linkage 134 is connected to the leg extension structure;
  • the linkage structure 13 is connected to the side plate 131 and rotatably connected between the support structure 12 and the link assembly 30, and rotates with the movement of the leg extension structure and the support structure.
  • the footrest connector 38 includes a first connector 381 and a second connector 382, one end of the first connector 381 is hinged to the middle of the second footrest 37, and the other end is hinged to one end of the second connector 382,
  • the other end of the second connecting piece 382 is hinged to the middle of the second connecting rod 32 near the second connecting point 322 of the first footrest 35
  • the middle of the second connecting member 382 is hinged to the middle of the fourth connecting rod 34 .
  • first connecting piece 381 and the second connecting piece 382 are used to connect and support the second footrest 37, the second footrest 37, the first connecting piece 381, the second connecting piece 382 and the fourth
  • the link 34 constitutes a four-bar link mechanism that can be folded and extended, and is used to support and drive the second footrest 37 to extend.
  • the connecting rod assembly 30 includes a first connecting rod 31, a second connecting rod 32, a third connecting rod 33 and a fourth connecting rod 34, the second connecting rod 32 is hinged with the first connecting rod 31, and the fourth connecting rod 34 Hinged with the third connecting rod 33, the second connecting rod 32 is cross-connected with the third connecting rod 33, specifically, the middle part of the second connecting rod 32 is provided with a first connecting point 321, and the second connecting rod 32 is at the first connecting point 321 is hinged with the middle part of the third connecting rod 33 .
  • the first connecting rod 31 and the third connecting rod 33 are rotatably connected to the linkage bracket 1 .
  • the connections among the link assembly 30 , the first footrest 35 , the linkage rod 36 , the second footrest 37 and the footrest connector 38 are all pivotable connections or Hinged joint, each part can be connected by a combination of a rotating shaft, a pivot pin, a rivet, a bolt and a nut, or other fasteners that can realize a pivotable connection.
  • the middle part of the second footrest 37 is provided with a first limiter 3711.
  • the first limiter 3711 and the second connecting member 382 are matched against each other, the second footrest 37 shrinks to the limit position, and To prevent the footrest from loosening.
  • the first limiter 3711 is used to limit the maximum retracted position of the second footrest, so as to prevent the second footrest from failing to reach the predetermined position and causing looseness.
  • both the footrest surface of the second footrest and the footrest surface of the first footrest are kept in the vertical plane, so as to improve the aesthetics of the seat when it is retracted.
  • one end of the fourth link 34 close to the second footrest 37 is provided with a footrest connection point 3411, a linkage rod connection point 342 and a connector connection point 343 in sequence; is connected with the second footrest 37, the connecting rod connecting point 342 is set between the footrest connecting point 3411 and the connecting piece connecting point 343, and the fourth connecting rod 34 is connected to the connecting rod 36 at the connecting rod connecting point 342.
  • the fourth link 34 is connected to the second connecting member 382 at the connecting point 343 of the connecting member.
  • the first footrest 35 is provided with a second link connection point 351 and a linkage point 352, and the distance from the linkage point 352 to the linkage link connection point 342 is greater than the distance from the linkage point 352 to the second link connection point 351. .
  • the distance from the link connecting point 342 to the footrest connecting point 3411 is equal to the distance from the link connecting point 342 to the link point 352, and the distance from the link point 352 to the link link point 342 is greater than the link point 352
  • the distance to the connecting point 351 of the second link is such that when the first footrest 35 is stretched, driven by the second connecting rod 32, the connecting point 351 of the second link moves downward relative to the linkage point 352, and the linkage rod 36 Relative to the circular arc rotation of the fourth connecting rod, the footrest surface of the first footrest 35 is smoothly rotated to a horizontal position where the footrest faces upward, and the first footrest can be deployed more flexibly and quickly.
  • the leg extension structure 3 shrinks to the limit position, the first footrest 35 is located above the second footrest 37, and the footrest surface of the first footrest 35 is connected to the footrest surface of the second footrest 37. in the same vertical plane.
  • the leg stretching structure 3 stretches from the retracted position to the limit position, the footrest surfaces of the first footrest 35 and the second footrest 37 turn upwards, and the first footrest 35 and the second footrest 37 are in contact with each other. Spaced out.
  • the distance L between the first footrest 35 and the second footrest 37 is not less than 140 mm.
  • it may be 145mm, 147mm, 150mm or 155mm, in this embodiment it is 147mm.
  • the first footrest is split from the second footrest, which increases the distance between the first footrest and the second footrest after stretching.
  • the first footrest of the leg stretching structure of the present invention is hinged to the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are drawn back together to reduce the space occupied; when stretched, the stretching length of the leg stretching structure increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • the leg extension structure is used to connect with the footrest assembly 39
  • the footrest assembly 39 includes a first footrest 391 and a second footrest 392
  • the first footrest 391 is connected with the first footrest 35
  • the foot plate 392 is connected with the second footrest 37 .
  • the first footrest and the second footrest are respectively provided with inwardly bent footrest surfaces, and the footrest surfaces are used for fixed connection with the footrest, that is, the first footrest and the second footrest are respectively fixed on them. corresponding to the footrest.
  • the stretching device of the seat in this embodiment is two sets of support structures spaced apart and symmetrically arranged, and a driving device is arranged between the two groups of stretching devices, and the driving device drives the stretching device to extend or contract through the transmission structure 14, wherein the transmission
  • the structure 14 includes a connected first transmission member 141 and a second transmission member 142 , the first transmission member is used for connecting with the driving device, and the second transmission member is connected with the leg extension structure.
  • the driving device may be a manual zipper driving device; in other embodiments, the driving device may be an electric driving device, and the electric driving device may be a push rod motor or a slider motor driving device.
  • the leg stretching structure is stretched forward from the contracted position, and at the same time drives the linkage bracket 1 to move forward.
  • the first footrest 35 and the second footrest 37 are completely separated and the footrest faces superior.
  • the second connecting rod 32 drives the first footrest 35 to turn upwards, and the linkage rod 36 rotates with the first footrest 35, so that the first footrest 35 rotates more flexibly while supporting the first footrest 35, and the fourth connecting rod 34 drives the second footrest 37 and the footrest connector 38 to extend forward and rotate upward until the second footrest 37 stretches to the limit position .
  • the moving direction of each component in the leg stretching structure is opposite to that during the stretching process.
  • the leg extension structure and the back mechanism can be adjusted continuously.
  • the corresponding seat is in a leisure posture position.
  • the height difference between the highest point of the first footrest and the highest point of the back mechanism in the vertical direction is the largest, corresponding to the zero-gravity lying position of the seat.
  • the leg extension structure and the back mechanism shrink to the limit position, Corresponds to the sitting position of the seat.
  • the seat bracket adjusts the leg stretching structure to make the stretching of the leg stretching more flexible and increase the stretching length, so as to better support the legs and feet.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Passenger Equipment (AREA)

Abstract

La présente invention concerne un dispositif d'étirement mécanique pour une unité de siège mobile, comprenant : un support de liaison (1) comprenant une structure de support (12) destinée à supporter un dispositif d'étirement mécanique sur le sol et des structures de liaison (13) pouvant être fixées à une portion d'assise d'une unité de siège ; un mécanisme de dossier (2) ; et des structures d'étirement de jambe (3) ayant des éléments formant repose-pieds, les structures d'étirement de jambe (3) étant connectées de manière pivotante au support de liaison et utilisées pour être fixées à un repose-pieds de l'unité de siège. Le dispositif d'étirement mécanique est construit de façon à pouvoir réaliser une transformation séquentielle de l'unité de siège d'un état de posture assise à un état de posture de loisir, puis à un état de posture couchée ou une transformation séquentielle inverse. Dans l'état de posture couchée, la direction d'extension des éléments repose-pieds et la direction horizontale forment un angle compris entre 9° et 23°, de préférence entre 14° et 21°, plus préférentiellement entre 18° et 19°.
PCT/CN2022/125374 2021-10-27 2022-10-14 Dispositif d'étirement mécanique pour unité de siège mobile, support de siège, et unité de siège WO2023071831A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202111256078.6A CN113907551B (zh) 2021-10-27 2021-10-27 一种能提供零重力姿态的座椅伸展装置及座椅支架
CN202111258022.4A CN113892772A (zh) 2021-10-27 2021-10-27 用于可活动的座椅单元的机械伸展装置及座椅单元
CN202111258022.4 2021-10-27
CN202111256078.6 2021-10-27

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Publication Number Publication Date
WO2023071831A1 true WO2023071831A1 (fr) 2023-05-04

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CN216797072U (zh) * 2021-08-03 2022-06-24 锐迈机械科技（吴江）有限公司 一种搁脚延伸机构及座椅伸缩装置

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CN202636249U (zh) * 2012-05-21 2013-01-02 锐迈机械科技（吴江）有限公司 活动沙发机械伸展装置
CN110051153A (zh) * 2018-07-24 2019-07-26 锐迈机械科技（吴江）有限公司 一种用于座位单元的调节装置
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